Noise Reduction in Assembly department
Noise Reduction in Assembly department
(OP)
Hi all,
I'm trying to find solutions to reduce the noise in the assembly department. Basically, the department consists of 25 assembly machinery which include vibrating bowl feeders, pneumatic equipment and ultrasonic welding machines. So far i could observe that the majority of the noise is coming from the pneumatic equipment. Different types of silencers have been installed to reduce the amount of noise however, there is still a high level of noise. On the other hand, bowl feeders are enclosed in special cases to reduce the noise. Does anyone know what should be done more to reduce the noise level in the department ? does anyone ever had any similar situation ?
Thanks.
Regards
Lars
I'm trying to find solutions to reduce the noise in the assembly department. Basically, the department consists of 25 assembly machinery which include vibrating bowl feeders, pneumatic equipment and ultrasonic welding machines. So far i could observe that the majority of the noise is coming from the pneumatic equipment. Different types of silencers have been installed to reduce the amount of noise however, there is still a high level of noise. On the other hand, bowl feeders are enclosed in special cases to reduce the noise. Does anyone know what should be done more to reduce the noise level in the department ? does anyone ever had any similar situation ?
Thanks.
Regards
Lars





RE: Noise Reduction in Assembly department
lacking fancier instruments it can be done with a Microphone plus PC sound card plus freeware FFT software.
Some report success with guitar tuning phone apps, but I do't have a phancy phone, so can only suspect that maybe noise with pure tones/discreet frequencies might be required.
RE: Noise Reduction in Assembly department
There are many alternatives for noise reduction, but typically you are wasting your money unless the problem is obvious, or you have done some analysis. An industrial 'expert' will recommend treatments but won't guarantee outcomes.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Noise Reduction in Assembly department
Depeneding on where you are, there will be environmental noise limits imposed for employee safety. This has given rise to industrial noise consultants who will come in, assess your risks and then probably offer some (seemingly obvious) solutions.
I did visit an assembly plant once where the noise problem had been addressed by letting the employees turn their radios up.
- Steve
RE: Noise Reduction in Assembly department
This noise pollution issue is a project requested from the management so, such improvements to minimize noise have to be found. I just took the measurements of the noise level at different areas in the department and the highest noise level is 89dB. This noise is manly coming from an assembly machinery which includes pneumatic equipment, vibrating feed bikes and robots. I have also checked the legal notices and found out that the exposure noise limit has to be 87dB maximum. Thus, this issue has to tackled in a way. Does anyone have any suggestions for such solutions to minimize noise ?
Thanks
Regards
Lars
RE: Noise Reduction in Assembly department
E.g (unlikely local to you, but typical): http://www.advanced-noise-solutions.co.uk/industri...
- Steve
RE: Noise Reduction in Assembly department
A reasonably cheap and cheerful solution is to build a large heavy box around the noisy machines and line it with foam. However given the likely cost it is probably worth getting a consultant in.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Noise Reduction in Assembly department
RE: Noise Reduction in Assembly department
Another possible solution which i found from my research is to paint the inner bowl feeder by urethane coating. As i could see from the info online this coating reduce the acoustic level. Do you know if its good or not ? anyone used it ?
regards
Lars
RE: Noise Reduction in Assembly department
Just use a typical square D limit switch for the lids, they are two a penny in most assembly shops.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Noise Reduction in Assembly department
I would not consider damping a vibratory bowl feeder unless you are prepared to stop production while you remove the material! Vibration and surface friction are key to bowl design, so be careful about changing them to reduce sound emissions. You can make sure that bowl does not have broken or loose components (springs, fasteners, and vibration mounts), impacting at in/out feeds, and is properly tuned for the product being conveyed. You may find that repairs/upgrades to the bowl will maintain or improve performance while producing lower sound emissions. Make sure that any sound enclosure or barrier wall has adequately sized and located inspection windows, so operators can view bowl operations without opening enclosure. The best advise already given is to seek professional assistance.
Walt
RE: Noise Reduction in Assembly department
RE: Noise Reduction in Assembly department
Lars