STAM was the first manufacturer in the world to produce imitation tile pattern roof panels and is still world leader in this field in terms of productivity and quality of the final product. The STAM lines are able to produce at a constant speed of approximately 10 m/min. The sheet metal can be plain or pre-painted steel, copper or other metals.

 

Step forming as well as cutting-to-length is by means of an NC flying shear system which ensures high accuracy and speed. At the end of the line an automatic stacking system can be provided.

STAM Rollforming lines for trapezoidal profiles and corrugated profiles enjoy a particularly good reputation for flexibility, productivity and quality of the finished product. In the last years the tolerances for this products have become tighter and tighter: thanks to STAM’s know-how of the gradual forming process, involving taking account of the particular material to be used and the change in thickness, STAM Rollforming lines meet these high quality requests.

The production lines are available in two different configurations:

for low production rates, start-stop lines;

for high production rates, lines with flying shear able to run at up to 100 m/min.

The stacking and packing systems are properly sized for the rollformer capacity.

For quick changes of the forming tools it is available a changeover systems based on a cassette concept with one or two rollformers side by side.

These panels are made up of two sheet metal profiles between which insulating material is inserted or injected, typically PU (PUR/PIR) or rock wool / mineral wool or Polystyrene. The sandwich panels lines can work with two alternative methods:

 

- Discontinuous: the sheet metal profiles are produced separately and are then placed on top of one another with the insulating material in between; the two sheet metal panels are then joined together on a press. This method is suitable for low production rate.

- Continuous: with fully automatic lines, starting from raw materials. This method is suitable for high production rate.

STAM has more than 20 years experience in sandwich panels equipment and can supply lines with a high level of automation to produce panels for doors, roofs, walls and refrigerator enclosures. Based on deep knowledge of sheet metal forming possibilities, STAM can also bring a strong contribution for the design of a high quality aesthetic/architectural panels.

Downpipes for rainwater drainage systems can have either a square or a circular cross section. Round downpipes for ordinary houses are commonly produced in diameters of 90-100-120 mm. Metallic materials used for downpipes, gutters and their accessories are the following:

1. Pre-painted or galvanized steel
2. Stainless steel
3. Aluminum and aluminum alloys
4. Copper
5. Zinc

STAM manufactures forming machines for square and circular section seamed downpipes of all sizes and sheet metal materials, operating in the stop-start mode or using a flying shear. At one end of the downpipe a dedicate tooling forms the connection with other accessories of the rainwater drainage system. The control of this operation can be either manual or automatic, as required by the Customer.

STAM developed a very versatile system for this application. It consists of a ‘double rollformer’ on which tooling for two different types of profile are permanently set up, so that lost times for changeovers are eliminated. The tooling can be for downpipes of different sizes or for guttering and downpipes.

Gutters constitutes one of the basic components of a rainwater drainage system.

Commonly gutters are either of rectangular or semi-circular shape. 110 to 160 mm diameter semi-circular gutters are in common use. Sheet metal material used for gutters, downpipes and their accessories are generally one of the following:

1. Pre-painted or galvanized steel
2. Stainless steel
3. Aluminum and aluminum alloys
4. Copper
5. Zinc

STAM manufactures Rollforming lines for gutters in all shapes and sheet metal materials, operating in the stop-start mode or using a flying shear.

STAM developed a very versatile system for this application. It consists of a ‘double rollformer’ on which tooling for two different types of profile are permanently set up, so that lost times for changeovers are eliminated. The tooling can be for downpipes of different sizes or for guttering and downpipes.

Lines are designed for different speeds, depending on customer’s requirements, in the range from 10 to 40 m/min.

The rainwater drainage systems require, in addition to the larger components such as the gutters and the downpipes, a set of fixing and joining accessories. These are usually made by pressings and punching of sheet metal, either from coil or pre-cut blanks. It is a field in which STAM has a big experience so that it can offer equipment with different levels of automation, depending on customer requirements. In all cases the outstanding feature is the excellence in the quality of the product.

The deep drawing process of components such as the corner connections for the gutters, angled pieces of downpipe, and fixing and joining components, is realized by presses and press tooling which may be fed either from coil or with sheet metal blanks. STAM has extensive experience with the supply of equipment for all these applications.

Some of the components of rainwater systems cannot be produced in one operation, so finished parts made from two pieces can be joined by means of a folded seam produced in a separate operation.

For joining and supporting plaster board walls used in building construction, special joining rails are used.

STAM supplies high performance Rollforming lines able to reach speeds up to 120 m/min.

For these high speeds STAM developed special fully automatic packing lines incorporating ordinary strapping of the profiles, first collected in small bundles then strapped together in larger packs.

Purlins are used in building construction, primarily for industrial purposes.

 

 

The rollformed structural beams are made in a wide range of shapes and sizes using materials with different thicknesses and different arrangements of pierced holes. The principal groups of sections are C-profiles, U-profiles, Z-profiles and Sigma profiles. The profiles widths varies from 100 to 700 mm, the heights from 50 to 150 mm, the thicknesses from 1 to 5 mm.

 

 

Basic traditional lines can be used, where the forming rolls must be changed when production changes.

 

 

Flexible automatic lines are available if required. Stam developed and patented a Rollforming line allowing to change production in few minutes, in a full automatic way. This rollformer is designed in such a way that it is possible to change all the profile dimensions (thickness included), without changing the rolls. Also, the punching can be controlled by the CAM integrated system, so both diameter and position of the holes can be set.

 

This line can be integrated with an automatic stacking and packing machine.

False ceilings are employed for aesthetic reasons and to cover materials for thermal insulation, sound proofing, fire resistance and also technical equipment under the floor or roof above. STAM can offer the manufacturing equipment for complete false ceilings made up of light sheet metal tiles, supported on rails of aluminum or steel installed in an arrangement to suit the tiles to be used.

STAM manufactures flexible rollforming lines to produce the support rails and the tiles too, if the tiles are to be of sheet metal.

The support rails must normally be produced with tight tolerances and the manufacture involves a relatively large number of hydraulic pressing operations to generate all the features that are needed.

The illustration shows just the punching and cut-to-length section of such an automatic STAM line. The STAM equipment for the manufacture of the panels and for the support rails guarantees high speeds of production and high precision in the finished product.

The lines can also incorporate a punching section where a pattern of perforations for sound absorption is created.

Window frames made of sheet metal profiles have to be produced to high standards of accuracy and often are needed in large volumes. For this application STAM produces Rollforming lines characterized by high precision and flexibility. These lines may also include additional stages for punching, welding, etc.

High production rate is achieved by employing flying shear so that the rollforming section can run continuously.