What is the space between tie bars injection molding machine?
Space between tie bars is the distance between the inner sides of the four tie bars of the injection molding machine.
Space between tie bars = the distance between tie bar inner
The injection molding tie bar spacing is also named as the distance between the inner sides of the four tie bars. In the horizontal and vertical directions between the fixed platen and the movable platen of the injection molding machine.
This parameter is used to limit the overall dimensions of the mold. Because the mold is hung in from the middle of the injection machine tie bars during installation.
Specifically, the tie rod spacing determines the maximum mold width and height that the injection molding machine can accommodate.
The effect of injection machine tie bar distance
Ensure strength and rigidity:
The main function of the injection machine tie bar is to ensure that the injection molding machine has sufficient strength and rigidity to withstand the huge pressure generated during the molding process.
There are two templates on the injection molding machine. One is stationary, called the fixed template; the other is movable, called the movable template.
The mold is fixed to these two templates by screws and pressure plates respectively. When opening the mold, the movable template of the injection molding machine moves, thereby driving the mold to open. After the mold is manufactured, injection molding will be carried out, and the injection molding machine will be put on to start making the product.
The space between tie bars shows the size between two platens, which parts need to load the plastic mold.
However, there are many models of injection molding machines, and each injection molding machine has its parameters. The designed mold must be able to meet the injection molding machine model requirements provided by the customer, otherwise it will not be able to be produced.
Limit mold size by space between tie bars:
The injection machine tie bar spacing will limit the mold’s overall size, preventing the mold from being too large to fit on the injection molding machine. Specifically, the front and rear dimensions of the mold should generally not exceed the tie bar spacing. Then check whether the mold can be hoisted into the tie bar workshop by rotation. If rotation and hoisting are not possible, the only option is to change the mold size or replace the injection molding machine.
Sliding template:
The injection machine tie bar is also responsible for the function of the sliding template, allowing the mold to move smoothly between the fixed template and the movable template.
Method for determining injection machine tie bar spacing
Measure the actual use area:
Determine the tie bar spacing based on the actual use template area of the injection molding machine.
Generally speaking, the larger the tie bar spacing, the larger the mold width and height that the injection molding machine can accommodate.
The space between tie bars is larger, and the mold size we can load it larger.
Consider mold size according to the space between tie bars:
When designing a mold, the size of the mold does not exceed the tie bar spacing. This can be determined by measuring or calculating the maximum external dimensions of the mold in advance.
Refer to the injection molding machine specifications:
Check the technical specifications of the injection molding machine to understand the specified tie rod spacing range.
For example, the Haichen plastic injection molding machine model-HCK700 has clear provisions for the tie bar spacing 970*920mm.
Relationship between the installation area limit of the injection molding machine template and the distance between the tie bars
The template size determines the length and width of the mold, while the injection machine tie bar spacing determines its height. Specifically, the template size is usually about 4 to 10 times the maximum molding area of the injection molding machine.
When it is installed, the mold needs to pass through the tie bar spacing. So its front and rear dimensions should not exceed the tie rod spacing. This means that the larger the tie bar spacing, the larger the mold width and height that can be accommodated.
During the design and use process, the actual thickness, length, and width of the mold need to meet the requirements of the template size and tie rod spacing of the injection molding machine.
For example, the mold length width needs to be less than the tie rod spacing to ensure smooth installation.
The template size limits the maximum molding area of the injection molding machine, and the tie bar spacing further limits the specific size of the mold.
This shows that although the template size determines the maximum mold area that can be installed, the tie rod spacing determines the actual installable range of the mold.
How to adjust the space between tie bars?
Adjustment method: you can do it by following the steps below to adjust
Turn off the motor and loosen the locking nut on the fixed block on the operating side.
Use a wrench to turn the plasticized tie rod to adjust the moving length.
Turn on the motor, press the ejection seat retraction button, and check whether the nozzle is stable. If there is no shaking, it means that the adjustment is complete.
Tighten the locking nut on the fixed block on the operating side.
The relationship between the mold installation area limit of the injection molding machine. And the injection machine tie bar spacing is that the mold size determines the length and width of the mold, while the tie rod spacing determines the height of the mold. And the two together affect whether the mold can be successfully installed on the injection molding machine.
Therefore, when designing and selecting an injection molding machine. These parameters must be comprehensively considered to ensure that the mold can be installed correctly and perform its functions.
Injection Molding Machine Tie Bar: Choosing the Right Machine
When selecting an injection molding machine, the tie bar distance is a key specification to consider. It directly impacts the size and capacity of the molds you can use. HAICHEN offers a variety of machines with different tie bar distances, catering to both small and large-scale production needs.
- For small to medium-sized molds:Machines with a shorter tie bar distance are ideal. They are more compact, energy-efficient, and cost-effective.
- For larger molds:Machines with a longer tie bar distance are necessary. These machines can accommodate bigger molds, allowing for the production of larger or more complex parts.
HAICHEN’s machines are designed to provide flexibility and adaptability, ensuring that you can choose the right machine for your specific production requirements. Their advanced technology and customer-focused approach make them a reliable choice for manufacturers looking to optimize their injection molding processes.
