Punching Machines Presentation

8/3/2019 Punching Machines Presentation

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2004 RAVID Solar Solutions: Tel: +972-4-6370918 , Email: [email protected] , Site: www.b-ravid.com


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Ravid Solar Solutions has been manufacturing Internal Punching/Collaring machines forsome years in order to give the solar industry an excellent solution for a basic process inmaking heat exchanger: Branching.

What is BranchingWhat is Branching ??

the problemsthe problems

the basic solutionsthe basic solutionsComparing the solutionsComparing the solutions

why internal punching?why internal punching?

How it worksHow it works

Manual machineManual machine

SemiSemi --automatic machineautomatic machine

FullyFully --automatic machineautomatic machine



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What is BranchingWhat is Branching ??


Branching is a process in which a tube is prepared to accommodatBranching is a process in which a tube is prepared to accommodat e for side branches toe for side branches tobe connected. These branches are commonly used to distribute flobe connected. These branches are commonly used to distribute flo w in parallel.w in parallel.

In the case of heatIn the case of heat --exchanger (like in absorbers for solar collectors), piping in moexchanger (like in absorbers for solar collectors), piping in mo st casesst casesis made of copper. The HVAC industry uses large quantities of bris made of copper. The HVAC industry uses large quantities of br anched tubes andanched tubes andbranching is an important and significant factor in the whole prbranching is an important and significant factor in the whole pr oduction process.oduction process.

Branching is the platform for the assembled heat exchanger.Branching is the platform for the assembled heat exchanger.

Proper branching is the base for smooth production of good qualProper branching is the base for smooth production of good qual ity heatity heatexchanger.exchanger.


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the problemsthe problems


In thinIn thin --walled pipes, making flat holes is not sufficientwalled pipes, making flat holes is not sufficientfor strong and long lasting braze. It is common to sayfor strong and long lasting braze. It is common to say

that overlap for brazing of at least 3 times the tubethat overlap for brazing of at least 3 times the tubewall thickness is needed. The general answer for thiswall thickness is needed. The general answer for thisis a hole with collar. So, the process of producingis a hole with collar. So, the process of producingholes with collars is namedholes with collars is named collaringcollaring ..In most of the processes used for making the holesIn most of the processes used for making the holes(either with or without a collar), the by(either with or without a collar), the by --products of products of the process are chips and burrs of the pipe material.the process are chips and burrs of the pipe material.This is a major concern for the later stages of theThis is a major concern for the later stages of theproduction and they need to be removed.production and they need to be removed.

Also, any chipping process is always relatively slow. In Also, any chipping process is always relatively slow. Inmany cases tools are very costly and tend to wearmany cases tools are very costly and tend to wear --outoutoften. The result of all this is high price per hole!often. The result of all this is high price per hole!


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the basic solutionsthe basic solutions


DrillingDrilling

FlowDrillFlowDrill

Internal punchingInternal punching

External punchingExternal punching --

TT --Drill"Drill" --


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Comparing the solutionsComparing the solutions


Brazing compatibilityBrazing compatibility

Clean processClean process

Operator skill requirementsOperator skill requirements

Automation possibilitiesAutomation possibilities

InvestmentInvestment

Tool expensesTool expenses

ProductivityProductivity

Flow behaviorFlow behavior

Collar qualityCollar quality

Int.Int.punchingpunching

Ext.Ext.punchingpunching

TT--DrillDrillFlowDrillFlowDrillDrillingDrillingParameter Parameter = Worst = Best


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High collar quality and accuracy, resulting in fast and easy brHigh collar quality and accuracy, resulting in fast and easy br azing.azing.

Collars allow for minimum pressure drop and optimal flow distriCollars allow for minimum pressure drop and optimal flow distri bution between risers.bution between risers.

Very high productivity due to simple and fast process.Very high productivity due to simple and fast process.

Very long tool life = low running expenses.Very long tool life = low running expenses.

Moderate investment that can fit any budget: from manual to fulModerate investment that can fit any budget: from manual to ful ly automatic solutions.ly automatic solutions.

Simple operating and fast setSimple operating and fast set --up.up.

Clean process: no burrs and oils.Clean process: no burrs and oils.

w hy internal punching?w hy internal punching?


$


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How i t worksHow i t w orks


When punching is activated, a small hole is punchedWhen punching is activated, a small hole is punchedfirst. Further extracting of the punch, isfirst. Further extracting of the punch, is bendingbending outout

the circumference of the holethe circumference of the hole to form the collar atto form the collar atthe desired diameter.the desired diameter.As punching is complete, the gripper, which is holdingAs punching is complete, the gripper, which is holdingthe tube, is sliding it exactly to the next punchingthe tube, is sliding it exactly to the next punchingposition.position.

Side view

Top view


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M anual machineM anual machine


Low investmentLow investmentLow maintenanceLow maintenancePneumatic onlyPneumatic only


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SemiSemi -- automatic machineautomatic machine


High speedHigh speedModerate investmentModerate investmentLow maintenanceLow maintenanceEasy program changingEasy program changing


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FullyFully-- automatic machineautomatic machine


High speedHigh speedReliable processReliable processMinimal attentionMinimal attentionEasy program changingEasy program changing


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Long experience in the solar business in general and in the production of

punching/collaring machines.

Our machines are designed and built specially with the needs of the solarindustry in mind.

Tailor-made machines for your specific needs, From tooling to machinedimensions, according to your production needs.

Many machines are working smoothly in countries like Germany, Greece,Brazil and Australia.



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Here are some of the feedbacks we got from leading solar companiHere are some of the feedbacks we got from leading solar compani es regarding their experience with oures regarding their experience with ourInternal Punching/Collaring machines:Internal Punching/Collaring machines:

When asked about advantages of our machines over the solutions tWhen asked about advantages of our machines over the solutions t hey used in the past:hey used in the past:

It is faster, automatic and more accurate.It is faster, automatic and more accurate.

It is much faster and the hole diameter is constant.It is much faster and the hole diameter is constant.

the big advantage of the machine is the economic effect becausethe big advantage of the machine is the economic effect because of compensating a lot ofof compensating a lot ofworkmanship. Also the geometric design of the holes is a betterworkmanship. Also the geometric design of the holes is a better basis for the soldering process webasis for the soldering process wehave as next step.have as next step.

When asked about general satisfaction with the machines:When asked about general satisfaction with the machines:

In a table rate of 10 we should give it a 9In a table rate of 10 we should give it a 9

All in all we think this machine is a good solution for the requAll in all we think this machine is a good solution for the requ ested applicationested application


Please feel free to contact RAVID Solar Solutions regarding further information or any type ofconsulting for your needs.

Use our web site: www.b-ravid.com , email us at: [email protected] or call us: +972-4-6370918

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Punching Machines Presentation