Author: Klarm Mould

EDM machine for injection mold making

THE IMPORTANCE OF MOLDING FLOW ANALYZE BEFORE MAKING INJECTION MOLDS

Klarm Mould

The injection mold is a method by which parts of an object is produced on large scale. Possibly the pen kept on the table near you is made through injection molding. Injection mold maker in China and countries expert in this technique have a good hold over manufacturing sector. There are many processes throughout the injection molding, which requires analyzing the cost, time and raw materials. One of the important pre-molding processes would be molding flow analysis.

EDM machine for injection mold making
EDM machine for injection mold making

Molding flow analysis helps to examine mold design thoroughly. It is pre-analysis of the product manufacturing process with the help of software. Molding flow tries to come to a pre-conclusion of the temperature required to melt the plastics or steel, of the amount required to fill in the cavity and deciding the wall thickness of the object. For example, if due to any reason the wall of the object is too thick it would not cool properly and there would be sink marks that will not look good.

Molding flow analysis is a pre-manufacturing process which not only reduces the cost, it saves the time of the organization and it helps to manufacture parts, objects in a successful way. Suppose without a flow analysis if a prototype is manufactured and it shows some fault, then it needs to be started all again. The design of the tool needs to be changed and there would be enormous wastage of time and energy. Therefore, to control all these mishappenings a molding flow analysis is done.

A company expert in this technique of mold, injection considers flow analysis a necessary pre-requisite. There are various manufacturing companies which are an expert in 3D designing of objects and they are also an expert in designing tool according to the desired wishes. That is why Southeast countries molds and supplies the parts in all over the world especially North America and Europe.

Now, coming again to the molding flow analysis, it examines the flow of melted metal or plastic through channels and tells the quantity to be added or to reduce before manufacturing the parts. It is easy to cut the metal scrap from the object, but it is very hard to add metals due to their characteristics into the parts. For that, a whole new design is carved for the tool which overruns the manufacturing cost and time. All these problems can be averted through proper mold flow analysis.

Injection molding is altogether an expert technique which requires technical knowledge and years of experience in the field. Southeast Asia is considered such an expert especially in plastic injection molds and it is aptly called as an injection molding hub. It supplies, parts being used in healthcare equipment, automotive, electronics and home appliances. Almost everything is being manufactured in countries of this region through injection molding.

Injection molding has made the process of manufacturing an easy task compared to earlier days where the heavy objects were manufactured in one go and where the technologies like flow analysis were not common. Injection molding has turned the pace of economy in a great way.

Original source is from https://www.injectionmouldchina.com, which is a professional plastic injection mold maker in China. China injection molding is considered to be the best in the world.

transparent injection mold

Difficulties of making injection molds of transparent plastic products

Klarm Mould

Making injection mold is a difficult process. Even small mistakes can cost you almost a fortune. Such work should be done with immense attention and prior experience. While making, injection molds one faces many problems like the machine, the mold, but most of the trouble arises due to the plastic. Many people today are opting for plastic and its demand is increasing, but we cannot overlook the difficulties of transparent plastic products in making injection molds. Use of plastic in making injection modules is difficult. There are several reasons behind this. First, the process through which the plastic goes through is a tough one. It passes to the heating cylinder from the hopper on the way into the cavity. After facing such dreadful situations, its shape and size are ought to change. Other reasons are that the valve spring may leak or the heater band might be burned.

transparent injection mold
transparent injection mold

The kind of plastic you choose for your mold could also create problems. If you choose wrong plastic it can affect your material adversely. In case you think that all plastics are the same, then you are wrong. They are not. It is important to learn first about your material, your work design about it, its peculiarities. Making all these decisions earlier can be of great help and will also save you the trouble of making changes later.

ABS – The ABS plastic which is generally used has the tendency to get scratch or scars that are clearly visible. During the cooling process, it also has problems sinking. And if you use an opaque plastic, then good luck with it.

Glass-filled nylon – Good thing about the glass – filled nylon is that it can resist many harsh solvents that that could damage other plastics like ABS and polycarbonate but its main con that causes problem is that Glass-filled nylon is extremely vulnerable to sinking. The material design is of no help.

Polycarbonate – Polycarbonate’s price is higher than that of ABS. It also has the tendency to sink. And if there is some kind of defect in your material then it can affect the plastic’s performance.

If you want more strength from the plastic, then you can combine the ABS & Polycarbonate for better results.

Next problem you face from the plastic is due to its color. The majority of the colors in which plastic is available only vary between dark brown or black. You don’t have many options to choose from. After its finishing, the outlook and appearance of the product depend on its final color. If you want, then you can have it spray painted, but that will increase your production cost.

Although the final cost of your product depends on all the investment the choice of plastic plays a major part. In general cases the price is low, but in extreme cases, it can revolve around the figure of $10000 to $12000.

If you too want injection mold then you should visit injection mould china factory. They are the best injection mold maker in China.  Injection mold china will provide you the best quality molds. You can visit them on the URL given below.

For more information, please refer to https://www.injectionmouldchina.com

How To Make Rapid Prototype Injection Molds

Klarm Mould

Plastic injection molding makes a very good option for people looking for plastic prototypes or few parts for evaluation and testing. In injection molding, molten plastic is forced in a cavity at high pressure to ensure no fills and to open the die.  The molding machine applies closing force with the right tooling thus closing up die with temperature cycling and abrasive effect of flowing plastic. To avoid any mistakes that could mean starting over the process can be pretty slow especially for complex geometrics.

rapid prototype injection mold
rapid prototype injection mold

Fortunately, there are different manufacturing technologies that compress lead-time for those who want to make or design the plastic prototypes. By looking at the manufacturing options, you will be in a better position to decide what the best way of making rapid prototype molds is depending on the project requirements you are working with. The rapid prototype technologies are never the same and the results may not be the same for all prototypes therefore.

Selective laser sintering

This manufacturing method involves heating of powder till the granules join. SLS is very similar to SLA considering that it makes 3D shape through creating layer by layer using laser plastering over powder for heating. It is however a technology that can be used for both metal and plastic molds and the accuracy levels are impressive. You can actually achieve fully functional parts using this technology as long as porosity is avoided by all means possible.

Fused deposition modeling

This technology of making the rapid prototype molds has the plastic filament extruded using a nozzle onto the support plate or platform before it is then heated to create sticky soft substance. Shapes are then built as necessary by successive layering before the right finishing is done for the final appearance to be achieved. Plastics like polystyrenes, polyamides and polycarbonates are available for FDM and the accuracy rates for this manufacturing method are high although they could vary from machine to machine.

Stereolithography apparatus

It is abbreviated SLA and it is a molding technology that uses UV laser to solidify liquid photopolymer. The laser passes over polymer surface to create a solid layer before the table is lowered to let more liquid cover the solidified layer and then laser scanning is done again. Once done, the SLA molds require washing and sanding for the removal of ridges between layers for enhanced accuracy.

Rapid injection molding

Injection molding is one of the fastest ways of making rapid prototype molds. You can have your parts in days saving you the slow nature of processes like EDM and grinding. The molds may not be that durable compared to hard steel parts but you will have then in same finish, fit as well as performance at reduced time and cost. When considering rapid prototyping, it is important to remember that not all plastics are suitable and the finish, fit and form may not be as good as those achieved by injection molding. As long as you know what the molds are for, you will manage to make the right manufacturing process.

When you work with the right injection mold maker in China, you will indeed have the kind of parts you need at the end of the day. Plastic injection molding China has its benefits and when you are informed it is easier to choose the right path for your prototypes.

For more information, please refer to https://www.injectionmouldchina.com.

Precision tooling

How the precision injection molds are made

Klarm Mould

In the injection molding process, parts are produced by injecting substances into a mold. Different types of materials, including metals, elastomers, and glasses are used in this process. Let’s know more about the making of precision injection mold.

Precision tooling
Precision tooling

For making parts, the material is put into a hot barrel where it cools down taking the shape of the mold. Normally, molds are made by expert mold makers using metals, such as aluminum and steel. Now, we will look at the important stages of the mold making process.

China Precision Molding
Injection molding in China is done with the help of the state-of-the-art technology. Expert mold makers manufacture molds that meet the needs of buyers from around the globe. The process uses applied robotics and inspection processes that are automatic. The companies have different precision molding methods that are followed in a controlled environment.

Product & Process Engineering
So, how are the parts and components created and refined? Well, experts make use of computer aided design apps for creating and refining parts. They also offer prototyping, such as SLS and SLA and Urethane Casting. But it depends on the company you are talking about. You have to get in touch with the company to know more about their product and process engineering techniques.

Solid Modeling
In solid modeling, engineers make use of 2D and 3D modeling technology in order to get the work done efficiently. For mold designing and analytical work, like stress analysis and element analysis, experts believe that sold modeling is a very good and cost-effective method. This method is also good for manufacturing stereo-lithography components for rapid tooling and first inspection.

Tool Manufacturing
Aside from solid modeling, the technology makes use of CAM and CAD apps. Aside from this, CNC and EDM technology is also used. The trained workforce is knowledgeable and committed for creating all types of parts and components that you can imagine. The tools can be used in the automotive or medical field, for instance.

Quality Control
As far as quality control goes, precision measurement is on the list of the most important things. The precision measurement of a reliable manufacturer is almost perfectly accurate. The quality control methods and the state-of-the-art machinery ensures that the requirements of the users are met.

Mold Assembly 
The expertise and experience of a mold making manufacturer ensures that quality products are made that work according to the requirements of customers. The assembly options offered by most manufacturers are given below:

  • Applied Automation
  • Mechanical Bonding
  • Hot Stamping
  • Heat Staking
  • Pad Printing
  • Ultrasonic Welding
  • Business Systems Integration

The goal of any manufacturer is the customer satisfaction. And for this, they employ quality improvement processes.

So, this is how the precision injection molds are made. The process makes it a lot easier to make molds that are used to make components and parts. These parts are used in different industries. Even molds are used for making car parts all over the world.

Resource box: This article is originally posted from https://www.injectionmouldchina.com.

automobile injection mold

What Is A Quality Injection Mould Maker

Klarm Mould

An injection mould maker is a machine for producing parts by injecting at high pressure, usually plastic material into a mould. The plastic used are thermoplastic and thermosetting polymers. Material for moulding is conveyed into a heated barrel where it is mixed and then injected into a mould cavity where it hardens by cooling into the shape of the mould. Mould may be made of steel, aluminium and are themselves made with extreme precision so that the desired parts are created to match the design. Vice versa, those parts are also designed so that they are well suited  for injection moulding. The adaptability of injection moulding lies in this breadth of design consideration and possibilities, of both the injection mould maker in China and the item to be moulded.

automobile injection mold
automobile injection mold

Injection moulding finds application in almost all manufactured items, from plastic bottles to car parts.

  • A quality injection mould maker (person) should support his customer right from the concept stage to the mass production stage. He should know what questions to ask and anticipate where he is going to face difficulties in the moulding process while the part is being designed
  • A quality injection mould maker should be complete and integrated and yet have a variety of systems for different applications.
  • It would by virtue of being a quality item, be assisted by robotic systems.
  • They should be environmentally friendly, and have energy and space saving features.
  • The manufacturers should offer technical support and systems for factory automation.
  • Water circuits in a mould maker should not be looped as this leads to warpage.
  • The quality injection mould maker (person) should be present at the design stage of the part to anticipate difficulties in mould making and design.
  • Use of 3D rapid prototyping from 3D computer models is useful in injection moulding eg. To design water cooling channels along the contour of the mould which improves the quality of the parts and improves cycle times.
  • An internal storage memory for 50 molds is available
  • Fault diagnosis with alarm messages is possible
  • The command control centre should be shielded against magnetic interference.
  • A weekly schedule should be incorporated.
  • A quality injection mould maker that is driven by an electric motor has the following advantages over a hydraulic moulding machine
  1. A significant energy reduction of 40% to 50% is possible by electric compared to a hydraulic injection mould
  2. Stabilization of the molding process is achieved by use of the servo motor in the injection process
  3. Noise generation level is much lower.
  4. Molding cycle can be shortened by using different motors for different stages of the moulding cycle and running them in parallel, like opening, closing, injection, ejection, and weighing
  5. Injection speed can be increased
  6. Since no oil is used, it is an environmentally cleaner process.
  7. A digital display is always welcome
  • They should be low maintenance
  • A two year warranty which covers the replacement and or repair of any part that has a manufacturing defect.

Injection mold makers in China are supplying plastic injection moulding machines all over the world, at very competitive rates. They are also setting up offices all over the world to serve their customers better.

Resource box: This article is originally posted from https://www.injectionmouldchina.com.

plastic injection molded parts

How To Make Precision Plastic Molded Parts

Klarm Mould

Precision Plastic molded parts can be made only by Plastic injection molding. This is the preferred method because injection molding has the advantages of high tolerance precision work.

The following points go into making Precision Plastic molds.

plastic injection molded parts
plastic injection molded parts
  1. Using the proper clamping force

Injection molding machine – also known as presses, consist of a material hopper, an injection ram or plunger, and a heating unit. Plastic is injected into the mold through the sprue orifice. These presses are rated by tonnage which is the calculation of the clamping force the press can exert. This force keeps the mold closed while the molding is going on. By rule of thumb, the force needed is determined by the projected surface area of the part being molded. Tonnage can vary from a few to a few thousand. The nature of the material also determines the clamping force. If the plastic is stiff, more injection pressure and more clamping force is needed to keep the mold closed.  Also, larger parts require greater clamping forces. These points should be kept in mind when molding.

  1. Using the proper material for Molds – or die refers to the tooling used to produce the plastic parts by molding. They are expensive to manufacture and were preferred to be used only in large scale production. They are typically constructed from hardened steel, beryllium-copper alloys or aluminum. Steel though expensive, is more long lasting and its high initial cost will definitely be offset by the number of times it can be used. Pre-hardened steel is used for larger parts molding. The mold is heat treated after machining for longer life.

Aluminum Injection Molds cost much less and are used for mass manufacture of small parts. Aircraft quality aluminum is used for making molds. They offer quicker turnaround times because of their high heat dissipation quality. Since they are not wear resistant, they can be coated with fiberglass reinforced material.

Beryllium Copper also is used for quick heat removal especially where the shear heat is more. Shear heat is the phenomenon of heat trapping in a viscous material like melted plastic when the mechanical energy of the plastic granules when they are injected under high pressure is converted to heat energy.

  1. Using the right Gate

The main enemy of injection molding is stress. The molecules of plastic undergo severe stresses as they are extruded out of the injector into the crevices and corners of the mold to take that shape. They are forced to take sharp corners instead of their natural flow movement. These stresses when the part is cooled get locked into the part and cause warping, cracking, sink marks etc.

Gates are provided at the point of injection to prevent warping. Depending on the shape and size of the part, different types of gates are used.

  1. State of the art Machining

Using the proper machining to achieve very tight tolerances for their clients molded products. Proper initial designing is very important and can be outsourced to experts on a turnkey project basis. State of the art CNC machining, large boring mills, Blanchard grinding capabilities, conventional EDMs all go into making that perfect precision plastic mold.

Mold manufacturers in China have incorporated these and many more features to produce high quality Chinese molds that are in demand the world over at a fraction of the cost at which they are available in western countries.

For more information, please check out https://www.injectionmouldchina.com.

Making of Aluminium Cooking Pots in Cité Soleil, Haiti

Making of Aluminium Cooking Pots in Cité Soleil, Haiti

Klarm Mould

Some cool mould produce maker images:

Making of Aluminium Cooking Pots in Cité Soleil, Haiti
mould produce maker
Image by United Nations Photo
30 years ago Mones Mondasar’s father, established himself as an aluminum cooking pot maker in Port-au-Prince’s Cite Soleil, Haiti’s largest and most infamous slum. Now 45, Mondasar and his 25 year old son Walnes, continue the tradition producing up to 10 pots a week. It’s a small number by modern manufacturing standards, but everything depends on what scrap aluminum can be collected to be melted down and poured into hand made sand molds. The finished product will bring 500 Haitian Gourds each – approximately US – in Port-au-Prince’s central market.

UN Photo/Nektarios Markogiannis

Making of Aluminium Cooking Pots in Cité Soleil, Haiti
mould produce maker
Image by United Nations Photo
30 years ago Mones Mondasar’s father, established himself as an aluminum cooking pot maker in Port-au-Prince’s Cite Soleil, Haiti’s largest and most infamous slum. Now 45, Mondasar and his 25 year old son Walnes, continue the tradition producing up to 10 pots a week. It’s a small number by modern manufacturing standards, but everything depends on what scrap aluminum can be collected to be melted down and poured into hand made sand molds. The finished product will bring 500 Haitian Gourds each – approximately US – in Port-au-Prince’s central market.

UN Photo/Nektarios Markogiannis

Nice Plastic Moulding China photos

Nice Plastic Moulding China photos

Klarm Mould

Check out these plastic moulding china images:

Shenzhen, Oct-2017
plastic moulding china
Image by maltman23
A few things they make
at AMC (plastic injection molding factory)
4th of 4 factories
on the day of factory tours
Shenzhen
October-2017

Shenzhen, Oct-2017
plastic moulding china
Image by maltman23
Anti-smoking poster
at AMC (plastic injection molding factory)
4th of 4 factories
on the day of factory tours
Shenzhen
October-2017

Shenzhen, Oct-2017
plastic moulding china
Image by maltman23
AMC (plastic injection molding factory)
4th of 4 factories
on the day of factory tours
Shenzhen
October-2017