The matching locations for the Straight ejector pin, the shoulder ejector pin and the flat ejector pin, and the requirements... moreThe matching locations for the Straight ejector pin, the shoulder ejector pin and the flat ejector pin, and the requirements are as follows:
(1) The ejector pin head diameter d and matching size of the ejector blade with the core t and w should be set according to the clearance of 0.04mm.
(2) The size of the ejector pin and ejector blade holes in the non-matching sections are d = 0.8 mm or d1 = 0.8 mm, and the clearance between the fixed end of the step and the ejector retainer plate hole is 0.5 mm.
There are many reasons for going with Injection plastic mold as your chosen process in plastic manufacturing. First off, it... moreThere are many reasons for going with Injection plastic mold as your chosen process in plastic manufacturing. First off, it continually proves to execute absolute accuracy with its consistency of detailed features. High precision in handling prototypes of complex geometry is done so in a fast and highly efficient manner.
Working temperature of Straight ejector pin is crucial because it affects the lifetime or durability of an ejector pin. For... moreWorking temperature of Straight ejector pin is crucial because it affects the lifetime or durability of an ejector pin. For example, if the working temperature is high and the ejector pin being used is made for a low working temperature environment, then the ejector pins will certainly not last long.
In the market, there are three common types of ejector pins: (1) through hard pins, (2) nitride H13 pins and (3) the newly developed black ejector pins. All of these pins are excellent to use; however, each has its own characteristics and is designed to be used in a specific environment. less
As you begin work on developing your next product or enhancements to an existing one, here are nine DFM principles you... moreAs you begin work on developing your next product or enhancements to an existing one, here are nine DFM principles you should follow:
Minimize the number of components on Injection plastic mold. The more seams or connections a finished part has, the more places it has to fail. Simple parts with fewer elements are more reliable, easier to assemble, and they are also subject to fewer inventory control issues.
Jinhong uses Straight ejector pin, and their placement depends on a number of factors. Obviously the shape of the part is... moreJinhong uses Straight ejector pin, and their placement depends on a number of factors. Obviously the shape of the part is one (see example in illustration). Factors like draft and texture of sidewalls and depth of walls and ribs can increase the likelihood that areas of the part will cling to the mold. Resin choice can also affect pin placement or size. Some resins are "stickier," requiring more force for release from the mold. Softer resins may also require the use of more or wider pins to spread force and prevent puncturing or marring of the cooled plastic. less
The use of hot runner systems in Injection plastic mold has been possible for nearly 50 years, but it’s only since the... moreThe use of hot runner systems in Injection plastic mold has been possible for nearly 50 years, but it’s only since the late 1990s that the use of a hot runner system surpassed cold runner systems in plastic injection molding.
Hot Runner and Cold Runner Systems
In a hot runner system, a manifold system heats the mold tool and sends melted plastic to nozzles which deliver the plastic to various cavities within the mold. Hot runner systems may be either internally or externally heated. External hot runner systems are excellent for use with polymers that may be sensitive to temperature fluctuations, but internally heated systems offer better flow control. less
Original equipment manufacturers (OEMs) can encounter many issues when producing components, including weld lines. Weld... moreOriginal equipment manufacturers (OEMs) can encounter many issues when producing components, including weld lines. Weld lines occur when there is a line, notch or color change on the molded part caused by the meeting of two separate flows of molten plastic. In many cases, weld lines are unavoidable — and most of the time, they do not weaken the part unless it is processed incorrectly.
In fact, when choosing a commodity Injection plastic mold manufacturer, Jinmatai reminds everyone to pay attention to the... moreIn fact, when choosing a commodity Injection plastic mold manufacturer, Jinmatai reminds everyone to pay attention to the market first to see if there are many mold manufacturers in the market, and what kind of commodity mold manufacturers produce mold products that are easier to use. There are actually several different inspection indicators.
The determining factors in the cost of your Injection plastic mold are a combination of the part size, complexity, material,... moreThe determining factors in the cost of your Injection plastic mold are a combination of the part size, complexity, material, and anticipated quantities. For instance, if you wanted 1,000 washers per year, we would recommend a single cavity mold, meaning it makes one washer per machine cycle. In that case, the mold would probably be $1,000-2,000.
In Injection plastic mold, the mold consists of multiple metal parts that come into contact with each other and with the... moreIn Injection plastic mold, the mold consists of multiple metal parts that come into contact with each other and with the molten plastic: Two halves of the mold come together at a parting line. The molten plastic resin material travels through sprues and runners and is injected through openings called gates. After cooling, ejector pins push the molded part(s), the runner, sprue, and gates out of the mold. At any meeting place between these different parts of the mold, a thin layer of plastic could flow outside of the cavity, creating flash. Flash is common along the parting line but can also occur at ejector pin locations and at other locations. less
When you’re able to peel the surface of a molded part, layer by layer, you’re dealing with delamination, an Injection... moreWhen you’re able to peel the surface of a molded part, layer by layer, you’re dealing with delamination, an Injection plastic mold defect that is sometimes also known as lamination or layering. This is a bad sign—delamination hurts the strength of the part, thus making it unreliable and potentially dangerous, depending on the part’s intended use.
Injection plastic mold is a manufacturing process with the principle ability of handling extremely large amounts of bulk... moreInjection plastic mold is a manufacturing process with the principle ability of handling extremely large amounts of bulk parts production. It is important to note, however, that there are several processes when it comes to plastic manufacturing. Many companies also prefer this method over others, and because of this it affects other business sectors, such as pharmaceuticals and hospitals.
In today’s global economy, plastic has become well ingrained as an intrinsic sector in the world market. More and more businesses are constantly in search of the most reliable and cost-efficient method for generating their products and optimizing revenue streams. less
There are several factors that will determine your Injection plastic mold cost, including:
Part... moreThere are several factors that will determine your Injection plastic mold cost, including:
Part size
Complexity
Material
Quantities
Material selection is another consideration in determining the cost of injection molded plastic parts. In general, the plastic used to create the product is determined by what the product will be used for. Different plastic materials have different properties and an experienced manufacturer can help determine the best plastic for the job. Commonly used plastic materials include: less
To understand how Injection plastic mold can really help today’s manufacturers, here are the top 10 benefits to utilizing... moreTo understand how Injection plastic mold can really help today’s manufacturers, here are the top 10 benefits to utilizing the process (in no particular order):
ABILITY TO PRODUCE DETAIL/COMPLEX GEOMETRY
With the right tool design and a scientific molding approach to process optimization, injection molding can help manufacturers produce highly complex, detailed plastic parts, such as the one pictured below:
Two of the major disadvantages to Injection plastic mold are the high tooling costs and large required lead times. Tooling... moreTwo of the major disadvantages to Injection plastic mold are the high tooling costs and large required lead times. Tooling is almost a project in and of itself and only one phase of the entire injection molding process. Before you can produce an injection molded part you first have to design and prototype a part (probably via CNC or 3D printing), then you have to design and prototype a mold tool that can produce replicas of the part in volume. Lastly, and typically after extensive testing in both of the aforementioned stages, you get to injection mold a part. As you can imagine, all of the iteration required to get the tool correct prior to mass production requires both time and money. It is rare that you would prototype an injection molding tool. It does happen though, especially for parts that will be made in a multi-cavity tool. For example, let's say we were going to injection mold a new shampoo bottle cap. That cap would likely have threads to attach it to the bottle, a living hinge, a snap closure, and potentially some overmolding too. A company may choose to make a single cavity tool of that part to make sure all of the features will mold as desired. Upon approval, they will make a new tool, that is capable of molding, for example, 16 caps at a time. They do the single cavity tool first so if there are any issues, they don't have to pay and wait for it to be fixed 16 times for each cavity. less