Stethoscope Moulding

Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized stethoscope products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For stethoscope products, we can make corresponding plastic parts, which is mainly done through injection molds.

The production of stethoscope injection molds needs to be combined with the precision, ergonomic design and biocompatibility requirements of medical equipment

1.Core design points

1) Parting and slider structure:

The stethoscope shell often contains multi-directional undercut structures (such as earplug head buckles, U-shaped pendant sound guide tubes), and a combination of front mold sliders (T-slots or hydraulic drives) and rear mold inclined tops is required. For example, the connection between the earplug head and the U-shaped pendant needs to be designed with sliders in different areas to ensure smooth demoulding and no clamping lines on the appearance. The parting surface needs to avoid the appearance surface, and the gate is usually selected in the hidden area (such as the battery cover slot or the inside of the pendant). Point gates or diving injection are used to avoid affecting the appearance and acoustic performance

2) Precision core and cooling system:

Slim structures such as sound guide holes (such as Φ1.5-2mm) need to use high wear-resistant steel (such as NAK80 or S136), and built-in copper cooling rods to improve heat dissipation efficiency and prevent deformation. The four corners of the mold core are designed with 5° jaw positioning to ensure the mold clamping accuracy ≤ 0.01mm.

Hot runner system is recommended for multi-cavity molds to reduce waste and ensure melt uniformity, especially suitable for injection molding of the connection parts of the sound guide hose

3) Ejection and automation adaptation

Transparent earplug heads need to avoid ejector scratches. Z-shaped ejectors and manipulators are recommended for collaborative demolding. Some manufacturers integrate visual positioning systems to achieve high-speed and stable production

2. Material and process selection

1) Mold steel and injection molding materials:

Mold steel is preferred to 718H, NAK80 (high polishability) or S136 (corrosion resistance), and key inserts need vacuum quenching. Injection molding materials must comply with ISO 13485 certification, such as medical-grade PC (good light transmittance) or ABS (strong impact resistance).

Transparent parts need to be produced in a Class 100,000 dust-free workshop to prevent impurities from affecting light transmittance and acoustic performance

2) Process parameter control

Use a 90-200T injection molding machine, and the mold temperature controller accurately controls the temperature (water circulation ±1°C) to reduce shrinkage and deformation. Liquid silicone (LSR) encapsulation technology is used to combine the sealing ring with the plastic part, which requires secondary injection molding and adhesion verification

3. Technical difficulties and solutions

1) One-piece molding of sound-conducting hollow tubes

Problem: The sound-conducting hollow tubes inside the U-shaped pendant need to be connected and burr-free. The traditional structure is prone to degradation of acoustic performance due to weld marks.

Solution: Use banana-shaped gate design + in-mold hot cutting technology to balance the melt flow path, and combine SPC process control to monitor the consistency of hollow tube size

2) Demolding of micro earplugs

Problem: The earplug head is small in size (about 8-10mm in diameter), and it is easy to tilt or break during demolding.

Solution: Optimize the ejector pin layout (conical ejector pin + gas-assisted demoulding), and design embedded positioning pins to assist the robot grip

3) Sealing verification

Problem: The connection between the stethoscope head and the sound guide hose requires a gap of ≤0.05mm, and uneven shrinkage can easily lead to air leakage.

Solution: The split insert design reserves mold repair margins, and the CCD detection system automatically identifies the matching gap

Stethoscope Mold

We are a stethoscope mold manufacturer, providing high-quality stethoscope mold manufacturing. As long as you want to customize/develop stethoscope products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.

Plastic Injection Mould making

Plastic molding specifications

Mold design:

Transaction process:

Mold testing:

Product packaging

Factory

We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.

We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.

Services we provide:

Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.

We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are manufacturers.

Q2. When can I get the quotation?

A: We usually quote within 2 days after we get your inquiry.

If you are very urgent, please call us or tell us in your email so that we can quote for you first.

Q3. How long is the lead-time for mold?

A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.

Q4. I have no 3D drawing, how should I start the new project?

A: You can supply us a molding sample, we will help you finish the 3D drawing design.

Q5. Before shipment, how to make sure the products quality?

A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.

We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.

Q6. What is your payment terms?

A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.

B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Q7: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.