|We were contacted recently by a major company who needed to unload cash boxes from a security vehicle into a secure area within a building. Initially, they felt they required a gravity roller conveyor, but were concerned at the speed of the boxes down the decline from the access point to the working height of the cash desk. We suggested a chute would be more adequate and minimise the speed of decent. This approach was adopted and we supplied a bespoke stainless steel chute, approx. 2 metres long x 600 mm wide.
We recently completed an order for customised gravity roller conveyor and worktables. The tables were required to have a special top and also a storage shelf below. The top needed to be in a material other than painted steel or stainless steel and galvanised steel was selected as the cost-effective solution.
If you require general fabrication work - tailored to your specific requirements, in mild steel, stainless steel, galvanized steel or aluminium, please contact us. We make chutes, tables, platforms, steps, bridges, safety rails etc. etc.
|Incline belt conveyors provide a cost-effective solution for moving products between different floor levels. It is a well-established application and we have designed and installed hundreds of such belt conveyors for a variety of customers and applications. The conveyor design needs to allow for the size and weight of the product, the height differential to be achieved and the surface characteristics of the material in contact with the belt to determine at what angle the product will slip down the belt.
For most unit load applications, incline angles between 20 to 30° would be acceptable and belts would have a special grip-top surface, which would be quite acceptable. However, occasionally an installation that may have been conveying satisfactorily may start to see products slipping down the belt. This may be the result of a change in the product packaging i.e. a matt finish to a gloss finish. This change may be made without the operator's knowledge.
If using plastic tote boxes to carry products, these may become warped so that contact between the bottom of the box and belt is reduced. This would be particularly critical when transferring between conveyors or at a change in level and/or direction. If the belt surface has become worn, dirty or dusty, this will further complicate the problem.
To overcome such slippage problems could be time consuming and costly if changes to the product itself, or the packaging, or boxes are necessary, or at worst if the conveyor installation itself has to be modified.
A low-cost “quick-fix” solution, which may solve the problem, is to use a belt dressing. This material is supplied in an aerosol can and is simply sprayed onto the belt surface. The spray provides a “sticky” belt surface and can significantly reduce slippage if this has become a problem.
If you have a similar situation and would like details of this special product please contact us for assistance.
|As part of our last News update we briefly mentioned a lift conveyor project we have just started. We are pleased to report this has now been completed and installed. Here are some pictures of what we supplied:
The end customer is one of Europe's largest vinyl floor covering producers. Their problem is to cost-effectively move the large rolls of wrapped vinyl material into tall stillages for onward transfer within their operational process. The rolls exit their wrapping machine at working height. The top of the stillages, however, in which the rolls are collected are approx. 500 mm above this level. We were asked, therefore, to design a conveyor unit that could be automatically raised and lowered approx. Half a metre and also could be tilted in either direction in the full-height position to tip the rolls off the conveyor into the appropriate stillage. We used pneumatic cylinders, two large units for the lifting and four small units, two either side, for the tilting operation. The conveyor itself is 5 m long x 450 mm wide, one of our QD style powered belt conveyors, using an integral drum drive motor.
The unit was partially assembled and tested in our works and fully assembled and run tested at site. Because the plastic wrapping around the rolls is not always tight, 'bunching' of the plastic material stopped some of the rolls from rolling off the conveyor at the original tilt angle. The angle has now been increased and the unit is operating very successfully.
Our second unusual application required a conveyor to move electric blankets as part of an electrical continuity testing operation. We have just received a repeat order for this special pulley type belt conveyor. It is 2,000 mm wide and 1,200 mm long with six 20 mm diameter pulley belts driven off a common drive shaft using a 0.37 kW motor. The blankets are moved at 15 m/minute. The conveyor normally 'pulls' the blankets through the electrical test unit as part of the quality assurance checks, although the conveyor is designed to be reversible.
We have just installed a conveyor system for a major catering supplies company in their central warehouse. Orders received are rapidly processed, and picked items are handled in plastic boxes. The boxes are moved by the conveyor system to a high-level mezzanine floor via a powered belt and roller line and then onto a long decline gravity roller section. A second line moves boxes down to an intermediate mezzanine floor via a combination of gravity and powered roller and powered belt conveyors. Each line has its own set of controls. The following pictures illustrate the system installed, which on the 'up' line had to be fitted into a very confined space with special attention being given to incline angles and transfers.