Rank: Guest 
|
Posted By NCL
Hi, Just want to check guarding arrangements for a Box and Pan Power Folder. Looking for industry standard so please don't tell me to do a RA.
Am I right in thinking it's tools set and locked off to 6 mm with adjustment only possible by a tool setter and stroke speed reduced to 12 mm/sec or less?
Does there need to be additonal rear / side guarding?
Thanks
|
|
|
|
|
|
Rank: Guest
|
Posted By Merv Newman
I'm sorry, but after 30 years in H&S you have managed to boggle my mind.
What are you talking about ?
If, as it happens, you are talking machine guarding, then no way should an employee have access to a part in movement. PUWER.
Merv
Got to do my CPD one of these daays.
|
|
|
|
|
|
Rank: Guest
|
Posted By holmezy
NCL,
sounds about right. You may or may not need additional guarding dependant on the situation. I've seen some of these totally enclosed, and some that are not.
Merv,
access to moving parts is allowed!! Years ago there was a big upset with machine manufacturers and users when a reg said "all moving parts must be guarded" The argument centred around bench grinders where by very nature of the machine, part of the wheel must be un guarded for it to function. I think the regs were amended to cater for these anomalies?
Oh and it is Friday afterall.
Holmezy
|
|
|
|
|
|
Rank: Guest
|
Posted By NCL
It is not always possible to guard dangerous parts (woodworking machines are a prime example).
Restricted gap (isn't wide enough to get your finger in) and restricted rate of closure (slow enough to get your finger out of the way) is an accepted form of control for some older engineering machines such as some press brakes.
You'll have to trust me on this one Merv.
I just want to know if it applies to this type of machine and if there are further industry accepted standards.
|
|
|
|
|
|
Rank: Guest
|
Posted By NCL
Thanks Holmezy. Just what I wanted to hear.
|
|
|
|
|
|
Rank: Guest
|
Posted By Merv Newman
Holmzey
Of course you are right. tool and die makers scream about not being able to see what they are doing. However, people who are turning out 1000 identical pieces per day on a lathe must have the protections in place.
Do they ever ?
Merv (cynical expletive deleted)(I'm doing a lot of that this week)
|
|
|
|
|
|
Rank: Guest
|
Posted By Robert K Lewis
Holmzey
They were amended and then repealed by PUWER 1998 but without an ability in my view to make an assessment - still thats another story.
On the original posting - a number of slow moving machines are regarded as being unlikely to cause entrappment and thus are amenable to managment controls. With regard to gaps it really depends on the individual relationships of the parts on either side of the nip point. If a body part cannot be drawn in then there is no in-running nip liable to cause danger and thus guarding is not required. If you google the HSE guidance on film winding machines you can see some of the HSE thinking in action.
Bob
|
|
|
|
|
|
Rank: Guest
|
|
|
|
|
|
|
Rank: Guest
|
Posted By NCL
Merv,
It doesn't do thousands a day.
Bob,
That machine link shows a hand operated folder, my query is for a power folder.
Everyone,
Think I am happy to go this one alone now unless someone actually has experience of these machines and can give me specific standards.
Thanks
|
|
|
|
|
|
Rank: Guest
|
Posted By John Murgatroyd
The biggest problem with these is the metal being folded. ie: It tends to rise a bit fast in the bend operation and takes people by surprise. The folder at work has light guards. The tool approaches the work and stops at a pre-set height above the former. Until it stops at that pre-set height it is under control of the guards, if the light-beam is interrupted before that stop the machine ceases operation. After that pre-set stop the machine ceases to be interrupted by the light beam being broken (since the metal being bended will break it) and completes the bend operation. However, the machines bend speed is slow. But a sheet of 2 metres long being bended will rise very fast in the bend operation, so the foot pedal is [supposed] to be away from the workpiece. It makes little difference. The light guards can be set to horizontal or vertical , which has the effect of moving the guarded area away from the machine in the horizontal mode. All totally useless since the operators keep setting the stop point at about 300 mm....you can lead a horse to water.....etc
|
|
|
|
|
|
Rank: Guest
|
Posted By Merv Newman
Good lord. From my total boggle to someone who actually understands the problem. That is IOSH
Merv
|
|
|
|
|
|
Rank: Guest
|
Posted By John Murgatroyd
As an addendum: the machine has mesh guard panels on the side/s which are interlocked to the light guard electronics. Shut guards = go, Open guards = no-go (machine drive motor off)
Personal observations: The operating switch/es should be remote from the press/folder, the footswitch to initiate the operation should be out of the danger area and be immovable (otherwise the operators will move it close to hold the metal being folded) (don't say it)
|
|
|
|
|
|
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.