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L-743 Injection Molding Machine Alignment System

L-743 Injection Molding Machine Alignment System


The L-743 Ultra-Precision Triple Scan® Laser is the ideal instrument to quickly and accurately calibrate the geometry of almost any kind of injection molding machine. It is one of only 2 lasers in the world (the other is the L-733) to offer 3 automatically rotating laser planes that are accurate enough for today's ever-tightening tolerances. This creates a powerful tool that not only FINDS, but also FIXES geometry problems, all in a fraction of the time needed with conventional methods.

The critical alignments of any injection-molding machine are platen-to-platen parallelism and tie-bar squareness. Poor alignment results in premature wear on the mold, part flashing, and stress on, and potential breakage of, tie bars. With long lead times and mold costs as much as $250,000 or more, proper alignment becomes critical.

Platen-to-Platen Parallelism Made Simple with Rotating Laser Planes

Simple to use and easy to set up, the L-743 is an ideal instrument to measure platen-to-platen parallelism. A simple setup procedure positions the laser plane parallel to the fixed platen. Targets are then repositioned to the movable platen and parallelism is easily measured. With Hamar Laser's Plane 5 Software, setup and parallelism measurements are achieved even faster. And once the laser has been set up, if errors are found, they can be fixed immediately without having to change the setup.

Complete Tie-Bar Squareness Measurements in 2 Setups

With the L-743's built-in squareness (each laser plane is square to each other), measuring the perpendicularity of the tie bars to the platens is a simple task. In fact, with just two setups you can measure all four tie-bars for squareness in two axes. And since the data is live, squareness errors can be fixed without changing the setup. Given that the laser has a range of 100 feet (30.5 meters) in radius, even the entire length of the largest injection molding machines can easily be measured for squareness.

Significantly Reduce Downtime when Changing Molds

Changing a mold is time consuming and realignment is a necessity. If a mold is slightly out of parallel to the platen, costly flashing and premature wear can occur. Inadequate alignment also results in excess wear on the injection-molding machine itself and can even lead to tie-bar breakage. With each tie bar costing at least $10,000, proper alignment becomes a big cost saver. The L-743 not only speeds the alignment process significantly, but also reduces tooling and maintenance costs.

Continuously Sweeping Lasers and Live Data Reduces Downtime

Continuously sweeping lasers and live data output create a powerful combination to align injection molding machines up to 70% faster than traditional methods. Downed machines will be up and running, producing quality parts in record time. HLI's continuously sweeping lasers are far superior to other point-and-shoot laser systems that require time-consuming manual laser rotation and target setup for each point measured. They also allow the use of multiple targets, which is especially helpful for large machine tools.

By providing live alignment data, misalignment errors can be quickly and easily fixed without having to change the setup. The targets come with 70-poind magnetic bases for maximum stability, so you can leave them on adjustment points (even horizontally!) when bringing the machine back into alignment. This is a tremendous benefit, especially if you use multiple targets, as you can literally watch the entire platen come back into alignment.

L-743 Significantly Reduces Stack Up Errors

One of the biggest problems with aligning machine tools using conventional methods is that many different alignment tools must be used, requiring a lot of time and increasing stack-up errors. Another problem is that an alignment is only as good as the tools used to perform it. The machinist level is a good example: it has a resolution of .0005" per foot, not very accurate for today's ever-tightening tolerances.

The L-743's laser planes, by contrast, are flat to 1/2 an arc second (0.00003"/ft or 0.0025mm/M) in a 180° sweep and 1/4 arc second (0.000015"/ft or 0.001 mm/M) in 90° sweep. The laser planes are square to each other with an accuracy of up to 1 arc second (0.00006"/ft or 0.005 mm/M). They further have the advantage of creating a single reference from which to measure machine geometry, significantly reducing stack-up errors.

Wireless Targets and Readout Speeds SetupWireless Targets and Readout Speeds Setup

With Hamar's line of wireless targets (A-1519-2.4ZB and A-1520-2.4ZB), there is no need to string long extension cords to reference targets. The targets have up to a 1" measuring range, a resolution as low as 0.00001" (0.00025 mm) and can be used up to 100 feet (30.5 meters) from the readout. The R-1355-2.4ZB. Readout uses a HP PDA, color software and a wireless receiver to display up to 4 targets simultaneously. Other features like electronic zeroing and target averaging help to speed setup and alignment.


Software Quickly Collects and Analyzes Data

S-1388 Plane5 SoftwareHamar's new line of alignment software, combined with newly designed computer interfaces, makes collecting and analyzing machining center alignment data faster and easier. All of the software is Windows based and provides large, color graphics. Alignment reports clearly and concisely show the machine's condition. In today's world of ISO 9000 documentation hell, our software will help you submit alignment reports in record time


Data Sheet
Application Note
Molding Injection with L-743
How it Works
Injection Molding Alignment


  • Three automatically rotating laser planes.
  • Laser plane flat to 1/2 an arc second (0.00003"/ft or 0.0025mm/M) in a 180° sweep and 1/4 arc second (0.000015"/ft or 0.001 mm/M) in 90° sweep.
  • Planes/beams are mutually square with an accuracy of up to1 arcsec.
  • Includes L-123 Pitch/Roll/Yaw base with coarse and fine adjustments.
  • High Accuracy Targets: A-1519-2.4ZB Single-Axis, Wireless Target with 1" (24.5 mm) Measuring Range and .00002" (0.0005 mm) Resolution.
  • Ultra Accuracy Targets: Uses A-1520-2.4ZB Single-Axis Wireless Target with .250" Range and .00002" (0.00025 mm) resolution for higher accuracy applications.
  • Standard illuminated levels accurate to 2 arc second (0.00012"/ft or 0.01 mm/M). High accuracy split-prism upgrade levels accurate to 1 arc second.
  • Instant on with short warm up
  • Typical setup time 20 minutes or less.
  • Diode lasers 2 times more stable than HeNe based laser systems.
  • Multiple mounting orientations.
  • Battery or AC powered.
  • Completely self contained.
© 2012 Hamar Laser. Products Covered Under US & Foreign Patents.