Our Services

JHS Providing Tooling Design And Injection Molding Manufacturing

What We Do

JHS will provide you with precision moulds to meet your needs so that assist with high-quality injection molding parts.

Injection Molding Service

Our company has the world's leading precision mold equipment, and is committed to mold customization, various plastic products, and injection molding service manufacturers.

Custom Automotive Mould Service

As a global professional automotive mould supplier, JHS researches and develops top grade mould with complex structure, high precision and technology content dependently focusing on automobile interior/exterior, blow and precision mould, In a word, theoptimization of auto parts and components circulation system is relative to all aspects.

Custom Home Appliance Mould Solution

Free charge design for manufacture with home appliance plastic molding quotation and injection mold quotation More than 10 years plastic injection mold manufacturing and plastic injection molding experience for international market

Technical Services

R&D personnel are the source of innovation. Under the leadership of a strong R&D team, JHS has achieved outstanding achievements in scientific and technological projects. It has passed ISO 9001 certification and has been recognized as a national large-scale injection mold key enterprise. JHS has a production area of 10,000 square meters and is equipped with high-tech facilities. Currently, it has about 120 employees. We design mold structure data and continuously improve it during on-site machining, and adjust it according to 3D product data provided by customers, aiming to provide products with higher quality, better craftsmanship and stronger structure. Provide clear and high-quality 2D machining drawings for on-site processing, provide dimension and dimensional tolerance drawings for quality and process quantification of production and inspection, order standard parts that meet product standards, and finally provide customers with detailed and complete migration data.

  • Exclusive Products Exclusive Products

    JHS Moulds is positioned to provide in-house molds design & tooling expertise, we build custom injection molds and guide your products from design through production.

  • Quality Control Quality Control

    At JHS, we are operating under strict quality management system compliant with ISO 9001. Your products will be made safely in our factory.

JHS Tooling And Plastic: One Stop Service, First-Class Quality, Intimate After-Sales Service

We are a company specialized in the manufacturing of moulds with high complexity for the plastic injection industry: 1K , 2K,IMD and GID tools... JHS has always been focuses on manufacturing moulds for plastic injection (concept, prototypes, engineering, manufacturing, try outs and validation, parts production, after sale support) with a production capacity of up to 20 tons size for a wide range of industrial sectors and have 25 injection machines from 40 ton to 1300 ton for parts producing.  With 10000 m2 of production area, JHS is equipped with high technology facilities, has about 120 enployees at moment. JHS is located in Xiamen China . Certified  ISO 9001. CNC Machining Shop EDM Workshop Quality Inspection Department Screen Printing Workshop Wire Cutting Workshop Injection Workshop Assembly Workshop                                                                                         JHS Facilities List                                  2020.11.04 Machine name Manufacturer Origin Model Q'ty Machining area MAX. Weight Years of use Remarks CNC MAKINO Singapore Makino-F5 1 900x500x350mm Positioning accuracy: 0.005mm Apr-2016 20,000R/Min Singapore Makino-F3 1 650x500x450mm Positioning accuracy: 0.005mm Oct-2016 20,000R/Min Funac Japan a-D14MiA 1 500x400x330mm Positioning accuracy and repeatability: 0.006-0.002mm <0.004mm May-2016 24,000R/Min Funac Japan a-D14MiA 1 500x400x330mm Positioning accuracy and repeatability: 0.006-0.002mm <0.004mm Nov-2020 24,000R/Min QUASER CN MV184D 1 1020x610x610mm Positioning accuracy: 0.004mm Oct-2016 12,000R/Min QUASER CN MV184D 1 1020x610x610mm Positioning accuracy: 0.004mm Nov-2020 12,000R/Min WELE CN RB-212 1 2120x1200x800 Positioning accuracy:  ±0.005 (0.0002) full travel Oct-2016 10-6000R/Min Jugang CN L-1060 1 Nov-2020 yangshen CN YS1890 1 1800x950x800 Positioning accuracy:  ±0.01(0.0002) full travel Aug-2017 10-6000R/Min EDM  MAKINO Singapore EDGE3 1 450x300x320mm 0.003mm Mar-2016 Max. processing speed: 100(mm/min) Singapore EDGE3 1 450x300x320mm 0.003mm Aug-2016 Max. processing speed: 100(mm/min) Singapore EDGE2 1 300x250x250mm 0.003mm Dec-2016 Max. processing speed: 100(mm/min) Hanba CNC HG80 CN HG80 1 800*500*500 0.005mm Aug-2017 Max. processing speed: 400(mm/min) Hanba two head CNC HG150  CN HG150 1 1500*700*700 0.005mm May-2017 Wire Cutting MAKINO Japan U6 2 650*450*420 0.002mm Sep-2018 Wire Cutting MAKINO Japan U6 1 650*450*420 0.002mm Nov-2020 Quality Control WENZEL CMM Germany Xorbit 55-700 1 500*700*500mm 0.002mm Apr-2016 Yanuxnig Image measuring instrument CN YVM-3020VT 1 300*200*220mm  X.Y Axis: (3+L/200)μm     Nov-2015 SDPTOP Magnifier CN SZM 1 Industrial microscope CN VTM-2010 1 Tuschiermaschine AQUAmate CN LS-160 1 1600*1200mm 8 Tonne May-2017 Auswerferstift Scheidemaschine 800G 1 Apr-2017 marking machine 1 Tapping machines  1 Chamfering machine 1 Grinder 5 Machine Name brand Origin Model Quantity Machine tonnage Remark Years of use Remarks Injection Molding Machine haitian china 1 130 Ton New in 2019 haitian china 1 160Ton New in 2019 haitian china 1 250Ton New in 2019 haitian china 1 250TonTwo-color machine haitian china 3 380Ton New in 2019 haitian china 2 470Ton New in 2019 BORCHE china 1 1000Ton New in 2019 BOLE china BL-100EK  1 120 Ton BL-170EKⅡ C610  1 250 Ton Dec-2016 BL-280EK C1400 1 320 Ton BL-350EK  1 420 Ton BL-650EKⅡ C4300 1 750 Ton Dec-2016 BL-1200EKⅡ  2 1300 Ton Dec-2016 TOSHIBA Japan 2 100T Dec-2017 TOSHIBA Japan 4 180T Dec-2017 TOSHIBA Japan 2 230T Dec-2017 Total Quantity Total 25
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Injection Molding
Design Tips

We provide mold design,precision plastic mold making, custom best quality plastic injection molding.

Control of processing temperature of injection molded parts Control of processing temperature of injection molded parts

There are many types of plastics, and many plastic materials have different melting times. Since plastics have no specific melting point, the so-called melting point is a temperature range in a molten state. The structure and composition of plastic molecular chains are different, so the impact on its fluidity is also different. , then the temperature control of injection molding parts manufacturers is also very important in the processing of injection molding parts. Today, the editor of JHS Plastics will talk to you about the injection molding process and the temperature control of each process. 1. Mold temperature Some plastic materials require higher mold temperature due to high crystallization temperature and slow crystallization rate, and some require higher or lower temperature due to control of size and deformation, or the need for demolding, such as PC general requirements In order to achieve better appearance and improve fluidity, the mold temperature sometimes needs to be more than 160 degrees. Therefore, the mold temperature has an invaluable effect on improving the appearance, deformation, size and plastic mold of the product. 2. Injection pressure The melt overcomes the resistance required to advance, which directly affects the size, weight and deformation of the product. Different plastic products require different injection pressures. For materials such as PA and PP, increasing the pressure will make their fluidity significantly To improve, the injection pressure determines the density of the product, that is, the appearance gloss. It does not have a fixed value, and the more difficult it is to fill the mold, the higher the pressure of the injection molded part. 3. The temperature of the barrel The temperature of the melt is very important, and the temperature of the injection barrel used is only a guide. The melt temperature can be measured at the nozzle or using the air jet method. The temperature setting of the injection cylinder depends on the melt temperature, screw speed, back pressure, injection volume and injection molding cycle. If you have no experience processing a particular grade of plastic, start with the lowest setting. For ease of control, the shot tank is divided into zones, but not all are set to the same temperature. For long runs or high temperatures, set the first zone temperature to a lower value, this will prevent premature melting and shunting of the plastic. Make sure the hydraulic fluid, hopper closure, mold and shot cylinder are at the correct temperature before starting injection molding. 4. Melt temperature The melt temperature plays a major role in the flow properties of the melt. Since the plastic does not have a specific melting point, the so-called melting point is a temperature range in a molten state. The structure and composition of the plastic molecular chain are different, so its fluidity is The influence of temperature is also different. Rigid molecular chains are obviously affected by temperat...

How to make products with high processing precision of injection parts? How to make products with high processing precision of injection parts?

Plastic has ultra-high fluidity, which makes it difficult to produce the size of plastic injection parts in strict accordance with the requirements of the drawings, especially for some injection parts with high dimensional accuracy requirements, the dimensional accuracy of plastic injection parts refers to the size of the obtained plastic parts. The degree of conformity with the dimensions in the product drawings, that is, the accuracy of the dimensions of the plastic parts, how can we make products with high processing precision of injection molded parts? First of all, there are many factors that affect the dimensional accuracy of plastic parts, the first is the mold manufacturing accuracy and the degree of wear of the mold, and the second is the fluctuation of plastic shrinkage and the change of process conditions during molding. The aging change after molding of the plastic part and the structure and shape of the mold, etc. Therefore, in order to reduce the processing difficulty of the mold and the manufacturing cost of the mold, the dimensional accuracy of the plastic part should be designed to be lower on the premise of meeting the requirements for the use of the plastic part. The dimensional tolerance of plastic injection parts can be designed and processed according to the SJ1372-78 numerical standard for plastic parts tolerance. According to this standard, the injection precision of plastic parts is divided into 8 precision grades, of which 1 and 2 belong to the precision injection processing technology level. , only used under special requirements, the standard only specifies the standard tolerance value, and the basic size upper and lower deviation can be allocated according to the matching nature of the plastic parts. For dimensions that are greatly affected by the movable part of the mold, such as the height dimension of the compression part, due to the influence of the thickness of the horizontal surface overflow, the tolerance value is the sum of the tolerance value and the additional value in the table, and the additional value of the 2-level accuracy It is 0.05mm, the additional value of 3~5 precision is 0.10mm, and the additional value of 6~8 precision is 0.20mm. In addition, for dimensions without tolerances, it is recommended to use the 8-level accuracy in the standard. Only by strictly producing according to the tolerance numerical standard of plastic injection parts can the dimensional accuracy and quality of plastic parts be guaranteed. In order to meet the pursuit of human beings for injection molding materials, the performance of products in various industries is constantly improving, and products are composed of accessories, which requires product accessories to be more and more precise, and maximize product accessories to meet the original design. The same is true for the size of the injection molding industry, and the precision injection molding process has become a field where major injection molding companies are comp...

What should I do if the filling of plastic injection raw materials is not satisfied? What should I do if the filling of plastic injection raw materials is not satisfied?

The electric injection molding machine will encounter dissatisfaction with the injection molding during the production injection molding process, and there will be a lack of glue at the right angle of the bone and the welding line. Here I will share some experience with you. Analysis of the situation of dissatisfaction with glue injection: Bone trapped air makes injection molding machine not full Insufficient filling of the injection molding machine caused by the glue and weld line Analysis of the reasons for dissatisfaction with glue injection: When the injection molding machine is working, the injection method of the mold is two-point injection. The injection speed is too fast, which is easy to cause the air trapped at the right angle of the bone to cause dissatisfaction; Solution: Adopt multi-stage injection molding and position switching. The first section fills the flow channel with a medium speed and passes through the glue inlet, switches the position, then the second section fills the vicinity of the bone position with a fast speed, and switches the position, and the third section fills the bone position with a slow speed to discharge the gas, and finally fills quickly, and switches to the safety position. Press the switch position and extend the holding time appropriately.

How to deal with gloss defects on the surface of plastic injection molding molds? How to deal with gloss defects on the surface of plastic injection molding molds?

There are many difficulties in plastic injection molding. The injection mold consists of a movable mold and a fixed mold. The production of plastic products requires injection molding. The plastic material is injected into the mold cavity of the injection mold through an injection molding machine, and it is formed after cooling and solidification. What should I do if there is a gloss defect on the surface of the plastic injection molding mold during the mold manufacturing process? The following are the reasons and solutions for the surface gloss defects of plastic injection molding molds summarized by JHS, hoping to help you. 1. Poor mold finish, rust on the cavity surface, etc., poor mold exhaust. 2. The gating system of the mold is defective, the cold slug well should be enlarged, the runner, the polishing main runner, the runner and the gate should be enlarged. 3. The material temperature and mold temperature are low. If necessary, the local heating method of the gate can be used. 4. The processing pressure is too low, the speed is too slow, the injection time is insufficient, and the back pressure is insufficient, resulting in poor compactness and dark surface. 5. The plastic should be fully plasticized, but the degradation of the material should be prevented, the heating should be stable, and the cooling should be sufficient, especially for thick-walled ones. 6. Prevent the cold material from entering the workpiece, and use self-locking springs or reduce the nozzle temperature if necessary. 7. Too many recycled materials are used, the quality of plastics or colorants is poor, mixed with water vapor or other impurities, and the quality of lubricants used is poor. 8. The clamping force should be sufficient.

Influence of plastic mold quality on injection molding production Influence of plastic mold quality on injection molding production

The purpose of mold design and manufacture is to mass-produce injection parts with high efficiency and high quality. To produce high-quality plastic parts, the first step is to have a good mold. A good plastic mold is not only good in appearance, but also if you want to make a high-quality plastic mold. Quality, high-level, high-precision plastic molds, from the following aspects: The smoothness of the injection surface of the mold The polishing of the mold surface is very important, which is one of the very important links that determines the success or failure of mold manufacturing. The surface of the mold is not smooth enough, the surface is uneven, and the surface of the injection molded plastic product will have skin lines and sand grains. In general, it is better to polish the surface into a mirror surface. In addition to the choice of mold steel, polishing personnel, time and technology will have an impact on the polishing mirror effect. Professional mold polishing masters are required, and they must have rich experience to accurately grasp the polishing time. The effect after mirror polishing of the mold. Precision of the mold The accuracy of the mold determines the dimensional accuracy of the plastic parts. The mold manufacturing must first have the conditions for high-precision measurement, such as two-dimensional detectors, three-dimensional detectors and other testing instruments. The principle of object imaging is used to accurately calculate the size and spatial position of the object. The difference of 0.02mm is detected, and the product size and injection volume are accurately measured. The fit of the upper mold of the mold Although there are certain operating standards in the mold industry, there will be slight differences between the molds and injection molding of different mold manufacturers. For example, mold opening and injection molding are not the same manufacturer. Due to the different mechanical equipment and production methods of each manufacturer, there will be risks in production. , affecting product quality and production efficiency. In order to reduce this risk, it is generally better to choose the same manufacturer for mold opening and injection molding. From mold opening to injection molding, manufacturers can control themselves, and problems can be solved in time.

Plastic surface treatment process Plastic surface treatment process

Plastic surface treatment is to use physical, chemical, mechanical and other methods to process the plastic surface. The surface treatment is to meet the particularity of the product, such as corrosion resistance, wear resistance, decoration or other special requirements, called secondary processing; Secondary processing is divided into four categories: printing, laser, coating, and electroplating. 1. Printing The printing on the plastic surface includes silk screen printing, pad printing, thermal transfer printing, hot stamping, etc.; The principle of silk screen printing: silk screen printing is through the extrusion of the scraper, so that the ink is transferred to the substrate through the mesh of the graphic part to form the same graphic as the original. The principle of pad printing: pad printing, also known as surface printing, is to first put ink into a gravure engraved with text or patterns, then copy the text or patterns to rubber, and then use rubber to transfer the text or patterns to plastic moldings surface, and finally the ink is cured by heat treatment or ultraviolet light irradiation. The principle of thermal transfer printing: the pattern is printed on special release paper with sublimation ink in advance, and then the pattern is transferred to the plastic film. The paper film is transferred to the work surface. In the process of transfer or hot stamping, you only need to hot stamp the printed object once, and then various color patterns can be transferred to the plastic parts. In this way, the defective rate of plastic parts can be reduced, and the pictures are exquisite, which can be completed by ordinary hot stamping machines and thermal transfer machines. The operation is simple, the printing is exquisite, and the production cost is low. The product loss is small, the added value is high, and the process decoration is strong. High hiding power and strong adhesion. In line with green printing standards, no environmental pollution. The principle of hot stamping printing: hot stamping is to use special foil to transfer text and patterns to the surface of plastic products at a certain temperature; the advantage is that this method does not require surface treatment, and color printing can be performed with a simple device. In addition, products with metallic luster such as gold and silver can also be printed.   2. Laser Laser engraving, also known as laser printing technology, is a printing method that uses the high energy held by lasers to directly print text and patterns on the surface of materials. According to the different printing methods, it can be divided into scanning laser machines and shielding laser machines. The principle of the scanning laser machine: the scanning laser machine uses two lenses equivalent to the X axis and the Y axis to control the light of the laser, and print the desired pattern or text on the substrate; the advantage is that it is good at printing small text. ; The drawing data is controlled...

Project Cases

JHS is a high technology company,specializing in many kinds of plastic mold designing,manufacturing and injecting, Our molds are exported to many countries around the world and have won unanimous praise.

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Automotive Injection Mold Making Automotive Injection Mold Making

Our design team designs automotive parts based on clients’ specifications and requirements. Upon completion, we evaluate and test every product design proposal. The analysis process is carried out by design and engineering experts in consultation with the client, which ensures that we deliver precise and high-performing parts. Using high-precision software to design molds with accurate core and cavity dimensions, we also consider requirements such as insert and double molding that are commonly used in the automotive motive industry. If our client intends to use such methods, we will tailor the mold design for them. We make molds for automotive parts using durable high-grade steel. Our engineers further ensure that the core, cavity, and gate systems are properly structured to facilitate even distribution of resin. The mold structure is then tested for efficiency and to confirm that it has no structural flaws. Using engineering-grade resins when injection molding automotive parts, we’re able to deliver high-performing structures like ABS plastic parts that are resistant to wear. We also achieve the surface finishes requested by clients. All procedures are performed and tested under the supervision of production experts.

2K injection mold making 2K injection mold making

2K injection mold, is also called two-color injection mould, this technology is to inject two plastic materials on the same injection molding machine with two time injection molding, but the product is ejected in one time. It is usually completed by a set of molds and requires a special two-color injection molding machine. Two shot injection mold: a real two-color mold, after the product is filled with one material, the injection mold will rotate 180 degrees and then turn to another plastic material, that is, the same injection mold cavity, different mold core. It is high efficiency, low cost if the plastic parts volume is large. If there is a high requirement for plastic parts production capacity, please choose two shot injection mold. JHS Mould has rich experience in two shot injection mold as well as over-mould. If you have two shot injection mold plastic parts demands, please contact us, our senior engineer, designers will analysis your products and give professional suggestion to you.

Home appliance products Home appliance products

Home appliance mould is also known as household appliance mould which is used to produce plastic parts and components for the household electric appliance. The household appliance moulds generally include interior plastic parts mold and the exterior plastic housing or case. For interior parts, dimensional accuracy is the most important, and there is usually no special requirement for appearance, as long as it does not affect the assembly of the products. For exterior plastic housing or cases, the appearance and size are both important, but the exception is that some housing or cases will go to secondary processing, such as painting, plating etc., so that the injection-moulded exterior housing usually is not required to be high polish, only in some specific areas that affect the subsequent process are high polished. How to ensure the accuracy of the plastic parts? First of all, to ensure the accuracy of the mould steel dimension. In HanKing, all the dimensions in the molds are within tolerance measured by CMM Zaiss before the moulds are delivered to our customers. We have good designers with more than 15 years of experience, providing good solutions and professional technical support. When we are designing a house appliance plastic injection mold, we should choose the mould steel by combining the total life cycles and the plastic resin of the part. Make inserts as much as possible for important dimensions or special structure area and some fragile ribs, because the inserts can be replaced and convenient maintenance after a long period of production. And machining by grinder as much as possible, in terms of accuracy, the grinding machine has its' advantage. Every kind of machine has different advantages, toolmakers should understand the advantages of these devices and make the best use of them to help to make good quality moulds. Another point, keep some clearance for the mould steel is also very critical to get correct dimension parts. Of course, it is far more than these points to make good quality moulds, please contact us and tell us your needs, we look forward to providing our professional support for your project.

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