rbm - PATERNOSTER-SYSTEMS

Initially rbm paternoster systems have been designed for the wood window production replacing cross conveyer systems which wasted a tremendous amount of floor space. Buffering the scantlings vertically, using the height of the production area is an important change in the materials handling concept, multiplying the given floor space.

Over the year’s rbm designed versatile versions for countless customer applications.

On other domains, rbm solved customer specific requirements with our know how and experience we gained from all steps beginning with the design till the successful launch of the project.

Below you will find samples of the manifold possibilities of the rbm paternoster system.
 

Application samples:

A - wood window production

1. original leaflet
2. leaflet backside
3. Description standard paternoster system
4. 2 towers with 5 meter, 3 towers with 3,5 meters
5. double usage of compartments
6. exploitation of different facility heights
7. high performance paternoster systems
8. Paternoster for storing packets
9. Application sample of not turning scantling
10. Special paternoster buffing system
11. 3 tower Paternoster with heating cabin to dry scantlings
12. “Logistic 2004” – feeding into movable storage boxes
13. Paternostersystem HPS JUMBO
14. Impregnation ROTOR WITH PATERNOSTER DRYING SYSTEM

B - Buffering wood plates

Double paternoster with 20 layers of cross conveyers

C- Production of wooden stairs

Special paternoster with 4 towers

D - Storage for plastic window profile boxes

28 units; 33,6 to net weight capacity

E - Cooling Paternoster system for insulation panels

  Run-through cooling system with 4 towers

F - Sorting system for saw mill applications

Layout and process description
rbm - wood paternoster

Get more space out of the smallest floor area

Storage capacity

HP3 – 130 (190) parts

HP2 – 90 (130) parts

HP1 – 40 (60) parts

Gain more space!

Description

Roller conveyer:

At the out-feed side of the production machine with automatic centring of work pieces with electronic scanning.

Each arriving part triggers the drive of the roller conveyer and is electronically centred to ensure that successive parts of varying length always take up central position in front of and relative to the lifting chain tracks.

Paternoster:

For synchronous lifting chain tracks in absolutely maintenance-free guides with 180-mm-long pick-up arms take each workpiece arriving from the roller conveyer.

In the case of the HP3 and the HP2, the parts are handed over to the next paternoster arm at the end of a revolution and on the opposite side they are carried away by horizontal conveyer. With version HP1, the parts are removed directly from the Paternoster.

Control system:

An electronic programmable controller enables the Paternoster towers to be operated either in parallel or separately mode. With model rbm-HP3, for example, it is possible to refill 2 Paternoster towers from the automatic planer while simultaneously feeding the slower working angle planed from the 3 rd tower.
 
2 towers with height of 5 meters

To supply a window processing centre behind an automatic planer with 130 parts
   
3 towers with height of 3,5 meters

buffer between automatic planer and sanding machine

 

  
Discharging

convenient discharging of the paternoster with a cross conveyer
 
HP1 with pushing device for pairwise feeding

As pre-selected the parts are pushed either single or pairwise from the roller conveyer into the Paternoster.
On the opposite side the parts will be discharged on the roller conveyer and are running single or pairwise to the window processing centre.
 
HP2

combination of two towers with 3,5 and 5 meters height to exploit different heights of two work- areas.
 
HP2S High performance Paternoster for 48 parts per minute

This special high performance Paternoster behind the double ender has to provide parts to the profiling machine without any gaps between two pieces.

Therefore it is necessary that up to 48 parts / min with a length of 350mm are running without discontinuation into the profiling machine.

Every process step had to optimised in order to achieve this rapid material flow.
   
Back view

On the discharging side the last parts of an order are running without distance into the profiling machine.
 





Paternoster for storing packets up to 6 meter of length

Packet pre-selection via SPS screen

Box inner-dimensions
Width: 345mm
Height: 71mm
Useful length: max 6.000mm
Useful load per box: max 200kg
Number of boxes: 20 pcs
 


Application sample of not turning scantling

particularly applicable as buffer in between machines where it is a must that the parts are not turning.

Both manual or automatic feeding and discharging by roller conveyer or cross conveyer as necessary.

Special equipment

For drying of impregnation. Special roller with stainless steel brushes and carriers with stainless nails.
   

Special paternoster buffing system (see sketch below)

Sorted buffering of work pieces before the machinery line

1) roller conveyer – feeding side
2) pneumatic pusher
3) buffering system, Feeding side
4) cross conveyer in multiple layers
5) buffering system, discharging side
6) pneumatic draw-in
7) roller conveyer discharging side
 

the roller conveyer (1) carries the work pieces from the raw material storage into the buffer (3). The pneumatic pusher (2) moves vertically into the right position of the 10 layer cross conveyer (4) in order to feed the selected layer.

The machinery line can be fed simultaneously out of a different layer.

The pneumatic draw-in (6) places the work piece into the buffer (5). Moving down vertically it is placed in the discharging roller conveyer (7) running towards the machinery line.
 
3 tower Paternoster with heating cabin to dry scantlings

Paternoster for drying impregnated scantlings. Capacity 90 parts

3 towers with 5 meters height with ring retainer system in the heating cabin

The stainless steel brush feeding roller conveyer can be swivelled automatically for cleaning operation.
 
“Logistic 2004” – feeding into movable storage boxes

De-stacking arriving work pieces – also surface treated parts- into a movable storage box.

Seven gentle supports of the paternoster take the arriving work pieces from the roller conveyer and deposit them to the opposite side via 7 cross conveyer lanes into the movable storage box.

For the impregnated parts the roller conveyer is equipped with stainless steel brushes to enable quick exchange for cleaning purpose.

The supports of the movable storage box are made of stainless steel tines to carry the parts only punctiformly.
 



Double paternoster with 20 layers of cross conveyers

An extreme high capacity storage in between is necessary for a machinery line for panel production.

A pneumatically controlled pusher 1 dispatches the panels, which arrive in minimum distance on the roller conveyer 2 into the first buffer 3.

A vertical moving pusher 4 shoves the parts in one of the 20 layers of the cross conveyer 5+6.

A take-over device hands over the parts on the second buffer 8.

The discharging conveyer 9 transfers the parts to the next working station.

 
Special paternoster with 4 towers for the production of wooden stairs

Between the oscillating saw and saw for parallel sawing there are 4 paternosters to buffer the different lengths of the cut stairs.

The operator allocates each work piece to one of the 4 paternoster accordingly with help of an electronic length control.
   
When the 4 buffers are complete, the paternoster will be operated backwards and the parts will be placed onto the powered roller conveyer piece by piece. Afterwards they will be transported by the belt conveyer onto the feeding roller conveyer to the succeeding parallel saw.

The paternoster system saves discharging, buffering and re-charging the parts. In this way, the handling of the heavy parts can be managed without any extra efforts by only one operator.

 
Storage for plastic window profile boxes

The gondola paternoster with 28 gondolas to store boxes for plastic window profiles.

Height: 7,4 m
Width: 8,0 m
Net weight capacity: 33,6 to

Feed from the ground level, discharging in the 1. level.
 
Cooling Paternoster system for insulation panels

In the production, the gross dimensioned insulation panels come out of the hot oven must first be cooled down before being cut into the net dimensions.

Previously the panels are discharged manually into the movable storage boxes.
   
4 paternosters with the maximum height of the working area are placed in a serial order. On both sides there is a roller conveyer with a length of 17m, divided into 4 sections.

The arriving hot panels pass through the 1st paternoster. On the opposite they are transported via roller conveyer to the 2nd paternoster. Afterwards, via 3rd. to 4 th paternoster.

Having left the 4 th paternoster, they are cool enough so that the next operation step can be followed.

 

Layout of the sorting system for saw mill application (click for enlargement)

   

Saw mill – Sorting system
Process description

The shelves and planks are transported from the cut saw into a brush machine with a direct connected optical measurement system 15.

The parts are transported via the roller conveyer 1+2 and the cross conveyer 3 under the control of the pneumatic stop 4 into the buffer 5.

 

 

   
Parts which are out of the defined dimensions will be separated and excluded via roller conveyer 10, the cross conveyer 11 and the 6 lane roller conveyer 12. The parts will be then manually placed by one operator onto the roller conveyer 14 for discharging.
   
The pusher 6 which is available on each of the10 layers pushes the arriving work pieces in one of the 10 layers of the chain cross conveyers 7 + 8. The allocation is supported by the optical measurement.
   
The cross conveyer distance of the complete chain conveyer 7+8 is separated in fixed sections, which is marked with steel angles on the chains. The optical measure system controls how many parts will fit in one section. Therefore all horizontal layers have a distance measuring system. The sections are important for the succeeding arrangements in tiers.
   
At the end of the cross conveyer the shelves are discharged via a swivelling conveyer 9, then they are transferred to the succeeding storage buffer.

While discharging out of the occupied layers, the empty layers can be feeded simultaneously.

 

 

Paternostersystem HPS JUMBO
Increased capacity of more than 300% by multiple usage of compartments
   
With a net length of e.g. 5 m and a height of 5 m you could buffer a quantity of:
 


424 pieces with a length of 400 mm or

265 pieces with a length of 800 mm or

159 pieces with a length of 1500 mm or

106 pieces with a length of 2300 mm or

53 pieces with a length of more than 2300 mm
   
This tremendous capacity can even be doubled or tripled by doublicating the modules (towers)
   
Ideal buffer-concept to supply a window processing centre behind an automatic planer
  (or other serial production set-ups with different output performances that are linked to each other)
 

For the single-part wooden window manufacturing

Impregnation ROTOR WITH PATERNOSTER DRYING SYSTEM

A roller conveyer (1) carries the 4-side finishes parts from the Window Processing Center to the impregnate tank.

A horizontal slider (2) pushes the part from the Roller Conveyer onto the carriers of the Impregnation Rotor (3). The parts are moved indexed through the impregnation tank by the radial mounted carriers organized in increasing distances on the axle.

There are always 3 to 4 parts dipped into the impregnation. After leaving the liquid the parts are rotated in a circle above the tank. As they change their position, the impregnation will drip off the wholes and rebates.

Depending on the performance of the Window Line, the parts will be dipped completely for 1 to 2 minutes. The impregnation will intrude deeply into the front ends of the parts. This supports an effective protection of all corner joints that are generally subject to early damages.

After nearly a 360° turn, the parts are moved on a cross conveyer (4). For further dripping, the parts are moved in a angular position (not recognizable in the layout) to the Paternoster System (5).

Depending on the performance and necessary capacity, one or multiple towers can be used for the complete drying process.

The drying process can either be in the indoor atmosphere of the production area or in a capsulated drying system with warm air in order to provide complete dried parts for the primer sanding process.