Introduction: A dual 7 ton uncoiler duct line works best when coil changes, floor space, and crane access are planned together before the machine arrives.
If your shop runs an auto duct line machine on tight deadlines, the real constraint is often not the shear or the control screen. It is how quickly you can bring a new coil into the line without blocking the aisle, the crane, or the next job. A dual 7 ton uncoiler changes that rhythm when the floor length, load path, and material mix are clear before purchase. The layout decisions below keep a fully automatic duct production line feeding steadily in a busy sheet metal shop, even when orders change through the day.
In a busy sheet metal shop, the auto duct line machine is only as fast as the coil that feeds it. A 7 ton coil is not a small material handling task. It needs a safe lifting plan, a clear path, and enough space to move without blocking other work. When the line stops for a coil change, the shear, the control operator, and the next job all wait. That waiting is easy to underestimate because it happens in small blocks through the day, not as one obvious breakdown. Mixed orders make it worse: one job may need 1250 mm coil, the next may need 1500 mm, and the material may switch between galvanized and stainless steel. Each change pulls the crane, the forklift, or the operator away from the line. A non-named shop planning its first dual uncoiler line often starts with the machine price and the control screen. The more useful starting point is the feeding rhythm. Where will the coils sit? How far does the crane travel? Can the operator load the next coil while the current one is still running? If the coil storage is far from the uncoiler, the crane is busy even when the line is not. If the storage blocks the aisle, the shop loses flow between cutting, forming, and assembly. A dual 7 ton uncoiler works best when those planning questions are answered early. It makes the coil path visible, because two 7 ton trays need a clear loading plan and a safe coil route. The payoff is a smoother feed, not a bigger machine for its own sake.
The layout envelope is the real space a rectangular duct production line needs to run, not just the space the main machine occupies. For the Auto Duct Line 3, machine lengths are 8200 mm or 9200 mm, and machine weights range from 3500 kg to 6000 kg. Those numbers are planning facts, not a floor construction plan. They tell you what to bring into the conversation with your building engineer, crane supplier, and electrical contractor. Site conditions and local requirements still is worth checking before installation.
The 8200 mm or 9200 mm length is only the machine body. Add the infeed area, the coil loading zone, the operator space, and the outfeed path, and the practical floor length grows. The 3500 kg to 6000 kg machine weight also matters because the uncoiler, leveler, punching unit, and shear sit along the same base. Two 7 ton coil trays add local load where the coils are staged. Before you compare models, draw the actual route from coil storage to the uncoiler and from the uncoiler through the line. If the route crosses a main aisle, forces a tight turn, or leaves no space for the next coil, the layout will slow the line even if the machine itself is fast. Floor load capacity, foundation condition, and local building requirements are site-specific, so bring the machine weight and coil weight to your engineer early.
Crane access decides how quickly a 7 ton coil can be moved, but it also decides how safely. Lifting operations and work equipment rules, such as LOLER and PUWER in the UK, make safe lifting and equipment use part of normal workshop planning. In practice, the crane hook height, the travel path, the turning radius, and the coil storage position all affect the feeding cycle. If the crane must cross a busy assembly area, the shop may have to schedule coil changes around other work. A dual 7 ton uncoiler helps when the second tray can be loaded during a quieter moment, so the next coil is already in position when the material change is due. That planning value depends on crane availability, floor marking, and operator training, not on the machine alone.
A dual 7 ton uncoiler changes the material switching plan from a reactive task to a planned one. With two 7 ton coil trays, the shop can keep one coil running while the next coil is prepared. That can mean a spare coil of the same material, or two different materials for mixed orders. Instead of waiting for a coil to run out before calling the crane, the operator can stage the next coil in advance. The goal is not a guaranteed time saving. The goal is fewer interruptions when the line is already under pressure. For shops running a fully automatic duct production line, that rhythm matters because every stop affects the shear, the forming section, and the people waiting for parts. The Auto Duct Line 3 uses a standard electric uncoiler with two 7 ton coil trays, and it supports 1250 mm and 1500 mm coil widths. Total power is 9 kW, and maximum feed speed is 15 m/min. Those facts help you plan the electrical supply, the line speed, and the coil mix. If your orders switch between 1250 mm and 1500 mm widths, or between galvanized and stainless steel, the dual trays give you a place to prepare the next coil without moving the current one. The planning question is simple: do you have enough coil storage, crane access, and floor space to use the second tray well? As a COORIG Sheet Metal Machine Manufacturer, we configure the Auto Duct Line 3 around that answer, and we ask for coil weight, width, material, and daily change frequency before recommending the layout.
A dual 7 ton uncoiler duct line is a workshop planning decision as much as a machine purchase. The value shows up in the feeding rhythm: fewer crane waits, less aisle blocking, and a clearer plan for material changes. Start with the real layout envelope. The Auto Duct Line 3 is 8200 mm or 9200 mm long and weighs 3500 kg to 6000 kg, so floor length, load capacity, and crane access need to be part of the same conversation. Then map the coil path and decide how the second 7 ton tray will be used. If you are comparing an HVAC duct production line manufacturer, ask for a layout drawing that includes the dual uncoiler, coil storage, crane route, and material switching plan. That gives you a practical next step before you request a quote.
A：The Auto Duct Line 3 has machine lengths of 8200 mm or 9200 mm, but a working layout needs more than the machine body. Add the coil loading zone, coil storage, operator space, and outfeed path. The exact total depends on your crane route and material flow, so use the machine length as the starting point and confirm the full layout with your site engineer.
A：Plan for two 7 ton coil positions, a safe lifting path, and clear access for the crane or forklift. The coil storage should not block main aisles or the line’s infeed. Leave enough turning space for the lifting equipment and keep the second tray reachable without moving the running coil. The right dimensions depend on coil diameter, crane capacity, and local safety rules.
A：A dual 7 ton uncoiler can improve the feeding rhythm because the second tray lets you stage the next coil before the current one runs out. It reduces the need to stop and wait for the crane during a material change. The actual saving depends on coil preparation, crane availability, and how well the shop plans material changes, so treat it as a workflow improvement rather than a fixed time promise.
Lifting Operations and Lifting Equipment Regulations (LOLER) - HSE
Provision and Use of Work Equipment Regulations 1998 (PUWER) - HSE
Model Code of Practice: Managing risks of plant in the workplace | Safe Work Australia
