Stop bottlenecking your tempering furnace.
In high-throughput glass fabrication, the transition from the cutting table to the furnace is where 60% of handling damage occurs. Scratched Low-E coatings, edge chips on heavy laminates, and disorganized sequencing kill your yield. You need a dedicated WIP solution that sorts, protects, and mobilizes your batches instantly.
If you are running a continuous tempering line or a high-volume IGU manufacturing plant, you know that static storage (like traditional A-frames) kills efficiency on the production floor. The Glass Tempering Batch Rack, industry-known as the Harp Glass Rack, is not designed for long-term warehouse storage. It is a dynamic process tool designed to synchronize your cutting schedule with your furnace recipe.
Unlike bulk stacking where glass touches glass, a batch rack isolates every single lite. This isolation is critical when handling sensitive soft-coat Low-E glass or preparing "paired" lites for the IGU assembly line. It transforms your material handling from a chaotic pile into a sequenced, mobile production flow.
Numbered slots allow for precise batch sequencing compatible with furnace software.
The primary enemy in glass fabrication is surface damage. When operators lean raw glass sheets against one another on a generic trolley, inter-layer friction creates micro-scratches, particularly on high-performance coatings. Furthermore, the risk of "shelling" or edge damage increases significantly during manual separation.
Our solution utilizes a high-density system of PVC-coated steel rods. As seen in the design below, the glass acts like strings on a harp—never touching its neighbor. The base features specialized nylon rollers or high-density polyethylene (HDPE) slides.
This design allows your operators to slide heavy 12mm or 19mm sheets into the rack with minimal physical effort. The rollers absorb the kinetic energy of loading, preventing the bottom edge from chipping—a common issue with static wooden or steel base blocks.
PVC casing ensures zero metal-to-glass contact, protecting Low-E surfaces.
Fabricators often struggle with stabilizing narrow, tall glass pieces (such as sidelites or transom windows) during transport to the furnace. On a standard L-buck or A-frame, these pieces lack sufficient lean angle and can easily tip forward when the forklift or trolley hits a floor expansion joint.
The Glass Tempering Batch Rack solves this through its structural geometry. The vertical slots provide full-height support regardless of the glass aspect ratio. Whether you are processing a 2000mm x 2000mm sheet or a narrow 300mm strip, the harp tensioners and floor locks keep the load completely static during internal transfer.
We do not use lightweight steel. These racks are engineered to withstand the daily abuse of a busy glass plant. The structure is formed from Q235A Carbon Steel, ensuring rigidity under full load.
Crucially for international buyers, our design features a Knock-Down (Bolted) Assembly. As illustrated below, the rack can be disassembled into a flat-pack format. This allows us to fit high quantities into a container, drastically reducing your landed cost per unit compared to fully welded pre-assembled alternatives.
| Feature | Standard Specification | Fabricator Benefit |
|---|---|---|
| Base Material | Q235A Carbon Steel + Nylon Rollers | Supports heavy static loads; rollers prevent bottom edge crushing. |
| Slot Spacing | Customizable (Standard 10mm - 20mm) | Accommodates varying glass thicknesses from 4mm float to 19mm laminated. |
| Mobility | Heavy-duty Polyurethane Casters (2 Fixed, 2 Swivel w/ Brake) | Easy maneuvering by a single operator between CNC and Furnace. |
| Safety Mechanism | Foot-Actuated Lifting/locking system | Anchors the rack firmly during loading/unloading to prevent roll-away accidents. |
Knock-down assembly reduces shipping volume without compromising structural integrity.
For Insulated Glass Unit (IGU) manufacturers, the "pairing" or "mating" of glass sheets is a critical bottleneck. You need the inner lite and the outer lite to arrive at the assembly line simultaneously. Using a numbered Harp Glass Rack, operators can sequence the glass accurately: Slot 1 (Outer), Slot 2 (Inner), Slot 3 (Outer), Slot 4 (Inner).
This visual management system eliminates confusion, reduces search time by up to 30%, and ensures the washer and press lines run continuously without starvation.
1. Can this rack handle heavy laminated glass sheets?
Yes. Our heavy-duty models are engineered with reinforced Q235A steel bases and industrial-grade nylon rollers specifically to handle the weight of laminated glass. Please specify your maximum load requirements (e.g., 3000 lbs) when ordering.
2. Will the dividers scratch Soft-Coat Low-E glass?
No. The vertical dividers are sheathed in a durable PVC casing (and often contain a steel core for strength). The PVC provides a soft, non-abrasive barrier that protects delicate coatings like Low-E or anti-reflective layers.
3. Can I customize the slot width for thicker glass?
Absolutely. While standard harp racks are optimized for single lites (4mm-12mm), we can manufacture custom spacing to accommodate thick laminated glass (e.g., SGP interlayers) or even bullet-resistant glass compositions.
4. How does the "Knock-Down" design affect stability?
It does not compromise stability. We use high-tensile industrial bolts and precision laser-cut connections. Once assembled and torqued to specification, the rigidity matches that of a fully welded frame, with the added benefit of replaceable parts if damaged.
5. Is the rack suitable for high-temperature environments near the furnace?
Yes. The powder coating and steel construction are heat resistant. However, the rack is designed for transporting glass to and from the loading/unloading tables, not to go inside the tempering oven itself.
