two color injection machine – china quality 2k molds maker

2K Rotary Shaft Two Color Injection Mould Manufacturer | Yueyi Mould

2026-07-02Leave a comment

Taizhou Huangyan Yueyi Mould Factory specializes in rotary table and rotary shaft two-color injection molds, located in Huangyan, Taizhou, known as the “China Mould Town”. With over 17 years of mold manufacturing experience, our two-color molds are fully compatible with double-shot injection molding machines from Haitian, Yizumi and Chen Hsong.

We customize all types of PP+TPE double-shot overmolding plastic molds for various products, including electrical junction boxes, toothbrushes, daily household goods and pet supplies. For mold steel configuration, the cavity and core inserts adopt anti-corrosion pre-hardened 1.2316 steel, while the mold base adopts P20H steel. All molds are equipped with needle valve hot runner systems from UD brand and mainstream domestic brands, paired with optimized small stripper plate structures to ensure stable mass production without molding defects.

We provide complete one-stop mold customization services, including product structure analysis, CAE mold flow simulation, high-precision CNC machining, mold trial and professional after-sales technical support. Our two-color molds are widely exported to Turkey, Egypt, India, Brazil and European countries. Every mold undergoes strict quality inspection to meet international standards for electrical accessories and daily plastic products. We sincerely welcome global buyers to send product drawings for quotation, arrange online virtual factory tours or visit our workshop for on-site communication.

Follow our product cases on Instagram:

https://www.instagram.com/p/DZev9MPBIpJ/

automation toothbrush making machine

2021-03-312023-10-10Leave a comment

YUEYI Mold, China top double component mold maker, quality offer injection mold toothbrush, multi materials tooth brush, pp n tpe toothbrush mold, plastic maker of toothbrush! We supply:

TPE overmolding brush
multi component toothbrush mold rotating by the machine
multi component toothbrush mold in mold rotary

2k toothbrush mold

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3k toothbrush mold

sharft rotary 3 color brush mold

We custom the best toothbrush molding solution for our customers, based on their actual production situation! Equipped with the brush mold, and of course there must have the 2k / 3k tooth brush injection machine! We supply:

standard single color machine for your overmolded brush
2k / 3k machine with the shaft rotary structure
2k / 3k machine without shaft rotary structure, for your multi component brush in mold rotary

2k toothbrush molding

3k toothbrush molding

After having the molded brush, then will go to the brush tufting and blister packing! We supply:

handle feeder to tufting unit with multi colors tufting
then to trimming and rounding machine
in between hot stamping unit will be needed
also need dust removing
blister packing machine with 3 ups forming, sealing and cutting die

automation brush tufting machine

brush blister packing machine

We YUEYI supply the automation toothbrush making machine, toothbrush production line! Offering you the Turnkey dental brush molding solution!

If you’re still looking for the good brush mold maker in China, or still looking for the reliable brush making machine, feel free to contact with me! I’m always at your service!

Lucia

lucia@yueyimold.com

mold construction design for core toggle multi shot molding

2020-05-102023-10-10Leave a comment

We have discussed the rotary table multi shot mold and rotary shaft multi shot mold before, so today we will talk about the two-color injection of the core toggle mold!

The core toggle multi shot molding process is the easiest, because the core and cavity of the mold do not need to be moved. Conversely, changing the geometry of the mold cavity by moving the slider. Check below pictures:

First inject material A into the cavity, at the same time the slider is in the fully extended position!

Then retracting the slider to reveal a new portion of the cavity！

After that, material B is injected into the reconfigured cavity through a separate gate (above the middle nozzle), the remaining gap is filled by moving the slider！

Then the plastic part hardens and ejected from the mold. Sequentially circulated as the above to continue the molding!

Adding a slider to the mold adds the cost of the tool, but it still can be much more cheaper than rotating platen or rotary shaft mold. Unfortunately, it can not produce the complex multi colored plastic parts.

We YUEYI Mold, China top multi injection mold maker, always here ready to service you, if you’re still looking for the good multi shot mold maker in China!

Lucia

lucia@yueyimold.com

mold construction design for rotary shaft multi shot molding

2020-05-062023-10-10Leave a comment

In my previous blog, we’ve talked about the mold construction design for rotary platen multi shot molding, so here I’ll continue to share you my understanding for the rotary shaft molding.

Rotary shaft multi shot molding

The rotary shaft multi shot molding is similar to the rotary platen molding, and adding additional capabilities: The rotating platen can now be retracted from the core half. In addition, the cavities and cores of each stage have different geometries. Axis rotating performs switching between different core / cavity sets.

And it is common used in 2 component toothbrush molding!
Check below video for better understanding:

The rotary shaft 2k molding is more complex than the rotary platen 2k molding, and it requires a more complex mold construction design. This complexity further increases the 2k mold cost and delivery time, but it allows for the production of more complex multi component molded parts.

If you’re still looking for the good two materials mold maker in China, then we can be your another good choice.

Lucia

lucia@yueyimold.com

mold construction design for rotary platen multi shot molding

2020-05-052023-10-10Leave a comment

In the past, a multi materials part was done by using additional secondary services or more complex assemblies. However, today’s multi materials injection molding largely eliminates these additional requirements, making it much more easier to manufacture complex finished parts, faster and cheaper.

According to moving different molded parts can be divided into:

1. Rotary platen multi shot molding

2. Rotary shaft multi shot molding

3. Core toggle multi shot molding

Rotary Platen Multi Shot Molding

The mold core plate contains two identical cores that are mirrored on the centerline of the platen and coincide with the axis of rotation. The cavity plate connected to the fixed platen contains two cavities with different geometries. In each cycle, the rotary platen completes the switching of the molded parts, and eliminates the need for manual switching.

Check below video for better understanding!

Here we only show the two materials mold, which can actually accommodate more materials. The rotary platen can be rotated by 90°, 120° or 180° depending on the amount of material used. Also it will need a special injection machine to provide the required rotation on the core side.

And on my next blogs, I’ll share you my understanding of mold construction design for Rotary shaft multi shot molding & Core toggle multi shot molding!

Hope it will help you for your multi materials molding !

Lucia

lucia@yueyimold.com