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Mould storage racks

2026-04-01 10:56
A blue harp rack fully loaded with glass lites in a fabrication facility

Your breakout table is running at full speed, but the IGU assembly line is waiting. Somewhere in the sea of A-frames and leaning lites is the matching piece of glass for a high-priority order. Every minute spent searching, every lite re-handled, increases the risk of a costly scratch, a chipped edge, or a scrapped unit. It's a workflow bottleneck that directly impacts your throughput and profit margin.

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The Real Bottleneck in Glass Fabrication: Disorganized Work-in-Progress (WIP)

In any high-volume glass fabrication plant, the journey of a lite from the CNC Glass Cutting Table to the Glass Tempering Furnace or the IGU line is fraught with hidden costs. We're not talking about major disasters, but the slow, daily bleed of inefficiency and material loss. Traditional A-frame and L-frame racks are excellent for bulk storage, but they are inefficient for the dynamic, high-mix environment of custom fabrication. The result? Operators waste precious time "digging" for specific lites. Expensive, coated glass like Low-E gets scratched from metal-on-glass contact. Thin lites (like 1/4") wobble and vibrate during transport, leading to invisible micro-fractures that cause failures down the line. This disorganization isn't just a nuisance; it's a direct drain on your profitability.

From Chaos to Orderly Flow: The Harp Rack Solution

The Harp Rack for glass is not just another storage unit; it's a mobile sorting station engineered to solve the specific WIP challenges between your processing stations. Its design philosophy is built on three pillars: individual protection, high-density sorting, and secure in-plant mobility.

Individual Lite Protection: Eliminating Scratches and Breakage

Every glass fabricator knows the pain of discovering a scratch on a final lite, forcing a costly remake. The Harp Rack's design directly addresses this. Each vertical divider is a steel core covered by a soft, non-abrasive PVC casing. Close-up of PVC-coated dividers on a harp rack protecting glass surfaces This structure ensures that each lite, whether it's a standard float or a high-value laminated glass panel with a sensitive Low-E coating, is held securely in its own cushioned slot. There is zero glass-to-glass or glass-to-steel contact during storage or transport, effectively eliminating the risk of surface damage that leads to scrapped products and production delays.

High-Density Sorting: The Key to Efficient IGU "Pairing"

The process of matching, or "pairing," individual lites to create an Insulated Glass Unit is a critical control point. A Harp Rack transforms this into a streamlined process. The base features a series of nylon rollers or a fully slotted steel plate, with each slot clearly numbered. Numbered slots and nylon rollers on a harp rack base for easy sorting of glass units Operators can load lites directly from the breakout table in a specific job sequence. The entire, organized job can then be moved as a single unit. This systematic approach to sorting glass units eliminates search time, prevents mis-pairing, and ensures the assembly line is fed with the right materials in the right order, dramatically increasing throughput.
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Secure Mobility: A Safe Bridge Between Processes

Moving heavy, awkward lites of glass across a busy factory floor is a major safety and damage risk. The Harp Rack is engineered as a robust solution for in-plant transfer. Built from high-strength Q235A carbon steel and equipped with heavy-duty polyurethane casters, it glides smoothly even when fully loaded. The critical innovation is the foot-actuated lifting and locking mechanism. Feature callout showing the foot-actuated locking mechanism for a harp rack glass trolley Before moving, a simple press of the foot pedal lifts the lites slightly and locks them securely against a rubber buffer. This completely immobilizes the load, preventing any shifting or vibration during transit. The result is an exceptionally safe transfer, protecting both your employees from injury and your valuable glass from impact damage.

Technical Specifications Overview

Our Harp Racks are available in standard configurations and can be fully customized to meet the specific demands of your production line, from lite thickness to overall capacity.

Model / SKU External Dimensions (L×W×H, Inches) Slot Capacity Applicable Glass Thickness (Inches) Dynamic Load (Lbs)
HR-40 59" x 39.4" x 71" 40 ≤ 0.47" 3300
HR-84 59" x 47.2" x 70.9" 84 0 - 0.31" 3300
HR-40 (Narrow) 39.4" x 47.2" x 70.9" 40 0.31" - 0.47" 3300
Custom Large 102.4" x 94.5" x 74.8" 80 ≤ 1" >5500


Frequently Asked Questions

1. How does the knock-down design benefit me?

Our Harp Racks are shipped disassembled (knock-down) in a flat-pack configuration. This drastically reduces the shipping volume, leading to significant savings on freight costs, especially for international container loading. On-site assembly is straightforward with standard bolts, and the compact shipping form makes it easier to move the components into your facility, even in areas with tight access.

2. Can you customize the slot spacing for very thin or thick glass?

Absolutely. This is one of our key advantages. For clients working with thin glass (e.g., 1/4" or 6mm) for IGU production, we can customize the slot width to provide a snug fit, eliminating wobble and vibration. For fabricators of thick laminated glass, we can increase the spacing and reinforce the structure accordingly. We tailor the rack to your specific product mix.

3. Is the powder coating durable enough for a busy factory floor?

Yes. All components undergo sandblasting and rust removal before receiving a heavy-duty electrostatic spray (powder coating). This process creates a uniform, tough, and corrosion-resistant finish that stands up to the daily rigors of an industrial environment. We can also match any color from the RAL color cards to align with your company's branding or safety coding.

4. How does the Harp Rack handle non-standard or oddly shaped lites?

This is a common problem our full-base harp racks are designed to solve. Unlike traditional roller-base carts where a short lite might only rest on one or two rollers, our full-base slotted design provides continuous support along the entire bottom edge of the glass, regardless of its length. This ensures stability for tall, narrow, or other non-standard patterns common in architectural glass fabrication.

5. What is the typical load capacity, and is it safe to move when full?

Our standard models, like the HR-40, have a dynamic load capacity of 3300 lbs (1500 kg). The combination of a robust, fully welded Q235A carbon steel frame, heavy-duty casters, and the foot-actuated locking mechanism ensures that the rack is exceptionally stable and safe to move even at maximum capacity, provided it is operated on a flat, level surface.

If you have any question or need drawings or solutions, Please leave us a message, We'll offer quick quote.

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