Your CNC cutting line is running at full speed, but the breakout table is a bottleneck. Using static A-frames for sorting mixed lite sizes is a recipe for scratches and "searching" downtime.
You need a mobile buffer that sequences glass immediately for the washer or furnace.
In a high-volume glass fabrication plant, the efficiency of the CNC Glass Cutting Table is often wasted if the offload process is chaotic. Once the glass is scored and broken out, where does it go? If you are producing Insulated Glass Units (IGUs) or custom shower doors, you aren't just cutting one size. You are cutting a sequence.
Traditional A-frames force operators to stack glass against glass. This creates two problems: first, the risk of surface damage (especially on soft-coat Low-E); second, the nightmare of "digging" for the matching lite when it’s time to pair units. The Glass Cutting Table Offload Rack, commonly known as the Harp Rack, transforms this workflow from a pile-up into a streamlined sorting system.
The breakout personnel are the first line of defense for your production logic. When cutting orders for IGUs, the inner and outer lites often come off the table in sequence. Dumping them onto a cart randomly guarantees confusion at the washing or assembly line.
Our Harp Racks feature numbered slots (typically 40 to 80 units). This allows the breakout team to slot glass in the exact order of production. When the rack rolls to the washer or the pairing station, the operator knows exactly which piece is next. There is no shuffling, no re-handling, and significantly reduced risk of edge damage.
Numbered slots allow for precise sequencing of IGU components immediately after breakout.
Modern energy-efficient regulations demand high-performance coatings. Soft-coat Low-E glass is notoriously sensitive. Stacking these sheets against each other on a wood or steel trolley without proper separation creates micro-scratches that may only become visible after tempering—resulting in costly rejects.
The design of the Harp Glass Rack ensures that each sheet of glass is suspended independently.
Thick PVC sleeves prevent coating scratches, essential for handling Low-E glass.
Fabricators often struggle with "sidelites" or transom windows. These pieces are often tall but narrow (e.g., 12" x 80"). On a traditional L-buck or A-frame, these pieces are unstable and prone to tipping or sliding when the cart is moved over uneven factory floors.
The Glass Cutting Table Offload Rack utilizes a full-base system or a high-density roller bed. This provides continuous support along the bottom edge. The vertical "harp" strings hold the glass upright from both sides, eliminating the "domino effect" risk completely, regardless of the glass aspect ratio.
Stable vertical storage for glass of varying aspect ratios, from small windows to tall sidelites.
Moving glass from the cutting table to the furnace involves crossing expansion joints, debris, and ramps. Vibration is the enemy.
Our racks are equipped with heavy-duty polyurethane casters designed to absorb floor shock. Crucially, they feature a foot-actuated lifting mechanism (Floor Lock). When the rack is at the cutting table being loaded, the operator engages the lock, lifting the weight off the wheels and anchoring the rack to the ground. This prevents the rack from "walking" away as heavy glass sheets are slid into place.
The foot-actuated lock stabilizes the rack during the critical loading phase at the cutting table.
| Q: What is the maximum glass thickness (mm) for the standard slots? |
| A: Our standard Harp Racks are designed to accommodate glass up to 12mm (1/2 inch) thick. For thicker laminated glass or multi-layer ballistic glass, we can manufacture custom racks with wider slot spacing. |
| Q: Will the nylon rollers scratch the bottom edge of the glass? |
| A: No. We use industrial-grade, high-density nylon rollers. They are harder than rubber to reduce friction (making it easier to slide heavy sheets in) but softer than glass to prevent shelling or edge damage. |
| Q: Can these racks go into the autoclave for laminated glass? |
| A: Standard Harp Racks are for WIP transfer (Cutting to Washer/Furnace). For autoclave processes, we recommend our specialized high-heat resistant autoclave racks, as standard PVC and nylon components may degrade under high heat and pressure. |
| Q: How are these racks shipped to our facility? |
| A: To save on freight costs, our racks feature a "knock-down" bolted assembly design. They are shipped flat-packed in crates and can be easily assembled on your shop floor using standard tools. |
| Q: Are the upright cords replaceable if they get cut? |
| A: Yes. The PVC-coated steel wires are durable, but in the event of accidental severing, the design allows for maintenance and replacement of individual sections without scrapping the entire rack. |
