When manufacturing small parts using a press, the best approach is to use progressive dies, where the semi-finished part is transferred from one stage to the next via the conveyor belt on which it is mounted. This ensures high production rates and cost-effectiveness for these manufacturing processes.
Conversely, when it comes to larger parts, progressive dies do not have sufficient capacity to produce them. The solution to this problem is to use a transfer system.
In a transfer press or a press with a transfer system, the workpiece is moved from one station to another either by the transfer press itself, using its own transfer system, or by an external, stand-alone system, which may be:
- From the same machine and driven by a cardan shaft
- Electrician – Self-employed
- Hydraulic – Self-contained
- Tyre – Self-contained
You can find a range of second-hand Platarg mechanical presses by clicking here
The word ‘transfer’, in the common usage of the Anglicism ‘transfer’, means to move or carry something from one place to another; when applied to a transfer press or a press with a transfer system, this definition refers to mechanical presses that have several stages or work stations, where the workpiece is manufactured and progressively moved from one station to the next, either by the machine’s own control system or by an external control system.
When it comes to producing small parts (stoppers, caps, perfume accessories, cosmetic components, etc.), the best machines for the job are the little-known Platarg mechanical transfer presses.
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Platarg mechanical presses are unique in that they operate using a crankshaft fitted with cams, each of which acts on a separate workstation—that is, on an independent die. This makes it possible to manufacture small parts that do not require a high tonnage capacity without the need for progressive dies.
Examples of our most recent Platarg mechanical press refurbishments:
Transfer presses are characterised by the following features:
- Transporting the part from one stage to the next
- More than two sets of steps or landings
- Mechanically driven presses.
- In-house feeder system based on development or conveyor belt
- More than two upper punch heads, driven by a cam or eccentric mechanism, with independent travel and adjustment
- Depending on the model, it can have a speed of 30 to 160 beats per minute, or even more
- The dies are usually positioned at the same level as the feed
Our company specialises in the refurbishment of Platarg mechanical presses
- The main advantages of this transfer-type mechanical press system, compared with the same production process carried out using a conventional mechanical press, are:
- A significant reduction in the time taken to produce a piece
- A significant reduction in the time spent per machine, both for feeding and unloading
- A significant reduction in the number of machines used and in the direct labour required for production
- Smaller production floor area
- Reduction in the stock of semi-finished parts
- The technology used in the manufacture of dies is simplified, reducing construction, repair and transport costs
- Significant savings on material costs, as narrower strips are used and these do not require space for guide positions.
