Rotary Table Injection Molding Machine

Vertical rotary plastic injection molding machine is suitable for producing automotive parts, energy-saving lamp heads. Golf balls, eyeglass holder nosepiece, LED brackets, and other metal bodies and plastic products forming work of appliance of direct contact with the public, can do fully automatic workflow operation, high efficiency, and low cost.

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Rotary Injection Machine's Description

Application​ Advantages Feature Parameters Table Specification for a complete clamping Application​

• The advantage of the rotary plastic injection molding machine is that it can choose double-station or three-station, which means it can have one upper mold, two or three lower molds. The operator puts the inserts here, and the clamping mechanism closes the mold to make the product. Improve efficiency, and save labor costs by completing the operation by one person.
• Super ample mold installation space, using four-column design, no interference of the middle column.
• High-precision positioning, so that the upper and lower molds are more accurately molded together, 180 degrees of alternate rotation of the disc, sizeable operating space, easy to take out and put in the insert, high production efficiency.
• Automatic inserting and removing devices can be added to achieve the whole automatic operation of the machine.

Advantages

• Rotary table injection molding machine with multiple molds improves production efficiency and saves time.
• Small investment, high return rate, one machine can top the efficiency of multiple machine products.
• Can realize automation, reduce labor cost, and higher efficiency.
• The machine has a long service life and is a fixed asset for customers.

• vertical injection molding machine with rotary table, also known as rotary injection molding machine, multi-station injection molding machine, its function is more than twice of the vertical injection molding machine, through a machine to improve production efficiency (one set of upper mold, three sets of lower mold, can do more) vertical mold closing, vertical injection, easy to put the product.

  High-efficiency disc gear transmission is carried by plane self-lubricating wear-resistant sheet, cooling water adopts central synchronous water transportation device (water pipe can synchronously rotate 360 degrees or 180 degrees forward and reverse water supply device, complete cooling mold program) rotating fast and accurate positioning, using positioning cylinder positioning, high positioning accuracy, high safety performance, end positioning does not fit the mold, protecting the regular use of the mold.

  Vertical rotary plastic injection molding machine is suitable for producing automotive parts, energy-saving lamp heads. Golf balls, eyeglass holder nosepiece, LED brackets, and other metal bodies and plastic products forming work of appliance of direct contact with the public, can do fully automatic workflow operation, high efficiency, and low cost.

  The machine surface is chrome plated to prevent rust, beautiful and durable. The power section is available with hydraulic motor and servo motor, or higher configuration according to the customer’s product and requirements.V

Feature

• Clamping force: 45T to 500T.
• Injection weight: 35g to 850g.
• Vertical four columns clamping, vertical injection.
• 1 top mold, 2 bottoms mold design, turn out the clamping area by Rotation.
• Put insert part into outer mold and inner mold injection at the same time.
• We can upgrade to servo motor for customer’s need, the actual energy save 50% ~ 70%.
• Robots or workers only need to work in one position within the non-working mold, which improves safety.
• The reserved position next to the machine allows easy addition of automation devices and the unique design of low noise machine operation.
• This injection molding machine is suitable for molding plastic materials with inserts, such as motor rotor, lithium battery parts molding, click rotor, etc.
• Ultra-low operating table, the overall height of the machine is reduced.
• Super ample mold installation space, with four-column machine design, no column interference in the middle.
• 180-degree alternate rotation of the disc, sizeable operating space, easy to pick and place inserts, and high production efficiency.
• The machine can be equipped with automatic inserting and removing devices to achieve fully automatic operation. It is more convenient to operate and connect with automation to increase production capacity.
• 2 stations for the disc, 3 or 4 stations can be selected for special needs to achieve more convenient operation.
• The standard disc is a vertical three-column direct clamping die with special mold requirements. It can also be a vertical four-column immediate clamping die.
• Double-station (or three-station) turntable table, stable rotation, and accurate positioning can improve production efficiency by up to 30%-50%.
• Comparable pressure and flow oil pressure circuit design.
• The injection system adopts electronic ruler control, multi-stage pressure, and speed adjustment can be set according to the requirements of the product, easy to adjust. Ensure the accuracy of the product.
• High precision P.I.D. temperature control, stable temperature control in each section, slight error.
• The injection system is designed with double injection cylinders, double seat cylinders, and double guide pillars, with smooth movement and high injection precision.
• Special screw and tube set design, suitable for different injection process requirements.
• Configuration of high torque, low noise hydraulic motor, so the plasticizing ability is more excellent.
• High-quality self-lubricating bearings are used in movable parts to make machine maintenance easier.

Parameters Table Specification for a complete clamping

Rotary Table Injection Schematic

Rotary Table Injection Sample Display

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Vertical vs horizontal injection molding operates according to the same general principles of injection molding (injecting liquid plastic into a mold to take the form of the mold cavity as the material hardens), each one offers unique benefits and application suitability.

The primary difference in vertical vs. horizontal injection molding is the configuration and movement of the mold. In the vertical injection molding process, the mold clamping action occurs vertically, up-and-down. The clamping mechanism and injecting mechanism are located along the same vertical plane. In the horizontal injection molding process, the mold clamping action occurs horizontally, with each half of the mold moving sideways to join. We will now take a closer look at each type of process and the pros and cons.

The Vertical Injection Molding Process

In vertical injection molding, the two halves of the mold move vertically, up and down, to open and close. The injection mechanism is typically located at the top of the mold. Gravity plays a significant role in filling the mold cavities and the injection pressure. This can help with filling time and consistency.

Vertical injection molding equipment is designed with open clamps and rotary tables. This allows for work with multiple molds and simultaneous operations—pre-molding, injection molding, and post-molding. As a result, there is less need for manual operation and intervention, higher efficiency, increased productivity, and reduced costs.

One key difference between a vertical and horizontal mold is that pieces do not automatically fall out of the mold after being ejected (as is the case with horizontal molds). In vertical molds, pieces must be extracted by hand or robotic arm.

Use Cases

• Multiple concurrent operations: The design of vertical molds and their use of rotary tables means two bottom halves and one top half can be used in tandem so that pre- and post-molding operations can occur while parts are being filled. This is especially useful in operations such as insert molding or over-molding, where inserts or substrates must be loaded prior to resin injection.
• Insert and Overmolding: Vertical molds are ideally suited to insert molding and overmolding due to the configuration of the mold. Inserts are naturally held in place by gravity rather than having to be built into the cavity or use other methods to remain in position.

Pros

• More consistent material flow and temperature distribution
• Advantageous for insert molding, especially when compared with older or more basic horizontal molding machines
• Can easily be manually operated and used with revolving tables to create inlays and combination parts
• Machine footprint is half the size of typical horizontal molding machines
• Pressure and clamping force required are lower due to the role of gravity in the process

Cons

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• Manual part removal can be more time-consuming
• Parts may be damaged during removal by robots or human operators
• Removal timing must be precise, which is more difficult in a manual process
• Manual removal step can make for inconsistent cycle times

The Horizontal Injection Molding Process

Horizontal injection molding has historically been the more commonly used type, though that does not mean it is inherently superior. As we continue to examine, each method has distinct applications, pros, and cons.

In horizontal injection molding, the mold opens and closes along a horizontal axis. Due to this configuration, consistent, correct injection pressure is required to fill the mold cavities and help ensure proper packing and cooling. Horizontal molds are typically built with more cavities than their vertical counterparts and are thus able to produce more parts per cycle. In addition — thanks to the horizontal separation of the mold halves — parts from these molds naturally fall out of the cavity upon ejection, and do not need to be manually extracted.

Use Cases

• Ideal for cylindrical parts
• Typically used for higher-volume production runs
• Advantageous for standard molding that does not require inserts or overmolds

Pros

• Efficiency in parts produced per cycle
• As a more common type of machine, more options are available, such as hydraulic or electric options
• Consistent cycle times and continuous operation

Cons

• Insert molding is much more complex and inefficient
• Machines take a larger footprint than vertical molding machines

As you can see, each process has unique strengths and scenarios for which it is ideal. For example, for insert molding, vertical injection molding will almost always be the right choice.

To learn more about injection molding product from these presses contact Crescent Industries or reference the Complete Guide for Plastic Injection Molding.

Resources:

https://twmachines.com/differences-between-vertical-injection-molding-machine-and-horizontal-injection-molding-machine

https://www.aberdeentech.com/post/advantages-of-vertical-molding-machines-vs-horizontal-molding-machines-for-insert-molding

https://medium.com/@eli_/vertical-versus-horizontal-molding-machinery-f87b75fb322c

https://www.quora.com/Whats-the-difference-between-horizontal-and-vertical-injection-molding-machines

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