7/7/2018 0 Comments
We are looking for co-operation with you as TSY Molding Limited is a solid factory of plastic injection tool making , molding services or even more.
We can make
@ SLA or 3D print prototypes for your evaluation,
@ DFM analysis reports,
@ tool design,
@ plastic injection mold making, including export tools,
@ plastic parts production,
@ mechanical assembly to products in markets,
@ logistic arrangement to your door as to where,when and quantity you want.
Pls send your RFQs for ,free of charge, budget estimation and proposals.
E-mail : firstname.lastname@example.org
website : www.injectionmoldingsupplier.com
Weak weld lines breakage in your plastic product elimination.....
Optimum type and location of plastic injection point are analysed after Mold Flow to eliminate
@ air trapped, thus causing flashes, short shot ,internal stress
@ weld line is relocated to the biggest wall thickness and on parting surface, thus achieving strong strength plastic functional product!
TSY molding Ltd co-designs for project development from start to products in markets with solid experience and guidelines!
Get Your Custom Plastic Molded Parts in 8 easy steps
1. Send your part design in computer stp format or samples.
2. Get our quote
3. Confirm the order
4. Anaylsis the part with DFM
Design for manufacturability is also known as design for manufacturing or DFM in short. In the industry of plastic injection molding. DFM is more often like”design for moldability“, as mold makers focus on the feasibility of injection molding process. A report (normally in PPT) on DFM to show customers how to optimize part design, our molding solution and potentially problem areas of your plastic parts.
5. Make the mold
6. Approve the samples
（1） Generally, effect to the roundness by the gate type tend to be better in the following order.
Side gate ＜ Pin gate（double points） ＜ Pin gate （triple points） ＜ Center sprue gate
（2） Weld might influence the roundness, especially in GF reinforced grade, so take care of the gate location, try to mold under a good liquidity condition, and be careful of the mold gas vent.
（3） Deformation towards surface run out direction is often occurred by the shrinkage ratio difference between diametrical direction and circumferential direction. Other than taking balance in shape, there is a method that place a rib towards circumferential direction to strengthen the stiffness and remedy. The multi-point pin gate is relatively effective against the surface run out.
Spring loaded pin inserts can drive plastic part out of cavity side effectively.
This will help to ensure high quality part with stable production output at low cost solution.
However, you must prepare them at tool design phase to avoid interrupting with cooling circuits as well as the most effective locations of ejection.
It is labor-intensive than two-shot overmolding, production cost per part using this technique will be higher, but it eliminates the extremely high cost and delay of producing complex two-shots mold.
If speed to market is critical, it may make sense to use pick-and-place to deliver product to market.
It reduces risk by allowing redesign of molds at a fraction of the cost of remaking two-shots molds.
Production volume-typically under 10,000parts or need to prototype design or test materials or possibility that the design will change is still economical to use insert overmolding.
4/15/2018 0 Comments
Make your ideas come true from design to products. Free of charge quotation.
TSY Molding Limited is a solid manufacturer (with good words of mouths) can provide you Professional exporting Precision molds and molding parts in China.
Our strength Business Scope as follows: * Rapid Prototyping * Product R&D * Mould Design * Mould Building * Second Operation * Part Assembly
Please send us the 3D（STP/STEP/IGS/X-T format）/2D drawing or sample,we shall quote a competitive price.
International Clients : We are easy to do business with! Our Clients come from USA, Canada, Germany,Belgium,Slovia, Japan, Indonesia, South Africa. If face to face meetings are required, or a visit to our factory, fly into Hong Kong, we will meet you at the airport and take you through to our mainland factory to meet our experienced design team. There are great Westentirn style hotels nearby, and after business is concluded, we will assist or accompany you back to Hong Kong for your trip back home. You can spend one or two more days in vibrant world class Hong Kong and enjoy some tax free shopping before heading back home.
Confidentiality: All the information we receive from you are treated as confidential no matter we sign agreement with you or not. All the test shot samples we make for you will be smashed before disposal.
Double Your Machine Output
Compared to conventional single-face molds, stack molds can virtually double the output of an injection molding machine by distributing the plastic melt into two or more separate mold parting surfaces.
What is a Stack Mold?
The defining characteristic of a stack mold are the two (or more) mold parting surfaces or mold split lines. A stack mold does not require much more clamp force than a single face mold because the projected part surface areas of the cavities on both sides of the center block cancel out each others force.
@ Without increasing the machine platen size you can double the amount of cavities producing parts. Most stack molds have an equal number of the same cavities in each parting surface.
@ Some stack molds have different cavities in each mold parting surface and they produce a family of parts per shot, each different in shape and size. This optimizes plastic part quality and the production output by improving cycle time.
@ Some stack molds can also handle multi-material injection, different materials such as hard/soft combination or multi-color molding. Three level stack molds are not as common as two level stack molds.
@ When the stack mold opens for the ejection of parts, both mold parting surfaces open (in most cases simultaneously) by means of a mechanical connection between the mold center block, the fixed halves of the mold and the moving half of the mold. The mechanical connection which moves the center block of the mold can be:
a) rack and gear operated motion system
b) harmonic lever system
c) hydraulic push-pull system or
d) helical gear system
@ Aside from the center block motion system, another key element of a stack mold is the hot runner system. The transfer of plastic melt from the machine barrel into the mold center block has traditionally been achieved by a heated sprue bar which leads the melt from the machine nozzle through the fixed mold half and through the first mold parting surface into the hot runner manifold, which is located in the center block of the stack mold.
@ The relatively simple sprue bar has the disadvantage of getting disengaged from the machine nozzle at each cycle when the mold opens for part ejection. The sprue bar may also become an obstacle during part removal, especially with robot take out/handling equipment because it always remains inside the first mold parting surface.
@ Mold cavities which by design cover the center surface of the molding area do not allow a center sprue bar so the hot runner has to by-pass the melt by leading it with an off-set manifold to the outside of the mold and from the side position through the first mold parting line into the center block for further melt distribution through the nozzles to the cavities.
Working in plastic industry of customs mold making and molding over 20 years with overseas contact and exports globally.