Cover Page - AVL Looms
Contents
1. 2 Lift the Tension Weight Arm to release tension on the warp You ll want to see a piece of cord to secure the arm to the Upper Horizontal on the loom frame 3 Pull the pin at the Cloth Storage Beam to disconnect it from a Spacer Clip 5 the drive hub 4 See drawing Remove the spacer clip from the Automatic Advance drive shaft Disengage the Automatic Advance gear by pushing the axle end toward the center of the loom until the gears are unmeshed and the large washer touches the small bearing housing Install the spacer clip between the Spacer large bearing housing and the gear Clip see drawing Page 9 INDUSTRIAL DOBBY LOOM MANUAL ADJUSTMENTS Compressor FR keep this set at 115 p s i Page 10 6 Back up the warp 7 Reverse the above steps to re engage the Automatic Advance System 8 Adjust the warp tension 9 Runa few picks on MANUAL until the fell line has moved within approximately 6 of the reed A hint here you may want to disconnect the Auto Advance and comb in the first few picks by hand 10 Resume normal weaving in automatic mode You ll need to make certain adjustments to your loom in order to accommodate your changing weaving needs Most of these adjust ments are a matter of refining your preferences as you go or of changing the speed or force at which the loom s mechanisms oper ate There are however some minimum operating limits that must be adher2. TROUBLE SHOOTING General Troubleshooting Tips Shuttle Doesn t Fire Shuttle Won t Stay On Race Shuttle Doesn t Box Completely Loom Fires On Empty Box Loom Stops Red Light On Loom Stops Green Light On Harnesses Drop or Don t Lift Automatic Cloth Advance Inoperable Inconsistent Pick Count Loose Shed 22 22 22 22 22 23 23 23 23 23 24 24 24 24 24 24 25 25 PARTS LIST 1 2 3 4 6 7 8 9 10 11 12 13 14 15 16 18 19 20 DI 25 26 28 29 30 31 32 34 35 36 37 38 40 41 42 43 INDUSTRIAL DOBBY LOOM MANUAL Harness Pulley Support Harness Pulleys three sets Dobby Cylinder Compu Dobby Switch Box Dobby Head Top Horizontal Four Box Shuttle Assembly Beater Top Reed Shuttle Race Beater Slide Rod Harnesses Castle Rear Vertical Beater Cylinder Assembly Front Vertical Middle Horizontal Cloth Storage Beam Support Spring Levers Bottom Horizontal Harness Springs Beater Slide Bracket Back Plate Lower Front Spring Lever Support Harness Cable Retainer Warp Beam Brake Drum Tension Arm Pulley Warp Beam plain Warp Beam Handle Separation Roller Warp Beam Retainer Upper Back Lower Back Page 1 INDUSTRIAL DOBBY LOOM MANUAL INTRODUCTION About this Manual Page 2 44 Cloth Storage Beam 45 Cloth Beam 46 Cloth Beam Gear 47 Harness Cables 51 Beater Slide Bearing 54 Sto
3. designed to require very little main tenance We suggest that you observe the following regime how ever you may find that your particular weaving environment re quires that you do these things more or less often Clean any lint away from the optical eyes and the Compu Dobby Drain any moisture from the FR Check the oil level in the FR if your unit requires lubrica tion Clean the Compu Dobby filter soap and water air dry Check the loom frame bolts for tightness Lubricate the Shuttle Box Spring with teflon spray TRIFLOW for example Clean and grease the Cloth Beam Axle with any bearing grease Check the color on the dryer filter at back of the computer cabinet Replace the filter cartridge as recommended by the manufacturer TROUBLE SHOOTING General Troubleshooting Tips Shuttle Doesn t Fire Shuttle Won t Stay On Race INDUSTRIAL DOBBY LOOM MANUAL You ll probably find that most of the problems you encounter at least until you ve become familiar with the characteristics of the loom involve shuttles Each time you change from one yarn to another you ll need to fine tune the binders on the shuttle boxes and adjust the tensioners in the shuttles themselves You may also need to change the pressure setting at Regulators SV 4 and 5 Very heavy yarns may require that you turn your shuttles around so that the yarns feed out between the shuttle body and reed This lessens the shuttle s
4. given in a side bar or information block And we know that a picture is worth at least a thousand words so you ll have illustra tions to guide you as well Finally you ll find a Maintenance and Troubleshooting section in the back of the manual PREPARATIONS Supplemental Loom Support INDUSTRIAL DOBBY LOOM MANUAL Your IDL will have been assembled and tested before it left the factory An AVL technician will in most cases have uncrated and installed the loom at your facility run it and made any necessary adjustments It is also likely that someone on your staff will have been oriented to the loom Depending on the circumstances of your particular installation you may find it necessary to provide some additional support for your loom 1 Squaring In order for your loom to function properly it must be level front to back and side to side To check front to back place a carpenter s level along the top of each Top Horizon tal Check side to side by placing the level along the length of the Cloth Beam and again along the Lower Back framing member If you find that the loom is significantly out of level you ll need to either correct the floor or shim the legs of the loom To square your loom measure its diagonals front to rear These should be equal 2 Flexible Air Link If the air line from your compressor is made of a rigid mate rial steel pipe pvc copper we suggest that you provide a flexible link b
5. it allows you to set tension in extremely fine degrees that remain constant as your beam surren ders warp Unless you ve used other AVL equipment you re prob ably not familiar with this way of keeping tension If you find the concept a little foreign be patient we promise that you ll soon recognize its merit Page 17 INDUSTRIAL DOBBY LOOM MANUAL Set Tension Page 18 Move the weight to its rearmost position until it nearly touches the wooden pulley at the near end of the arm Advance the warp until the tension arm rises and the cable begins to slip on the brake drum of the warp beam Ultimately you ll want the arm to ride horizontally As you advance the warp the arm should rise no more than 45 above horizontal and then fall back to horizontal e If the arm is riding above horizontal let the adjusting cord out at the spring If it s riding low take up cord e Check the tension in your warp If it s loose move the weight out on the arm Advance the warp a little and check again Continue in this way until you have exactly the tension you want Most weavers find that they can weave with less tension using this system If you ve laid on a very heavy warp you may need to add weight to the arm Additional weights can be obtained from AVL Con versely warps comprised of extremely fine yarns may require a lighter weight AVL can provide you with a half weight if you so desire To make it a li
6. Automatic Cloth Advance Inoperable Page 24 1 3 4 1 4 1 2 Insufficient air pressure Binder shuttle brake too tight Shuttle boxes need to be adjusted Knotted weft yarn may have hung in the tensioner and impeded shuttle travel usually but not always it stops or derails shuttle Shuttle sensor out of adjustment see Adjustments Empty bobbin Two shuttles presenting see Shuttle Doesnt Fire above Shuttle not boxed Sensors out of adjustment see Adjustments Automatic Advance cylinder too fast Compu Dobby out of adjustment see Adjustments Harness springs too tight Auto Advance cylinder is over powering dobby cylinder see Adjustments Dobby cable controlling errant harness is not engaging in the dobby finger inside the dobby head poor Compu Dobby adjustment Auto Advance lever is reversed screws attaching the lever to the bearing housing should be visible Reed Switch is not properly located see Reed Switch Loca tion Diagram Inconsistent Pick Count Loose Shed INDUSTRIAL DOBBY LOOM MANUAL Cloth Storage system not on Pressure setting too low or too high at the Cloth Storage regulator T handle on the Automatic Cloth Advance lever is loose Fluctuations in the air delivery compressor problem Check the cable at the Tension Arm it may be crossed If the tension is loosening the black plastic cord lock on the tension tie up in the Tension Arm cable may be slipping re
7. INDUSTRIAL DOBBY LOOM User s Manual AVL Looms 3851 Morrow Lane Suite 9 Chico CA 95928 8305 U S A 530 893 4915 530 893 1372 fax info avlusa com e mail www avlusa com Copyright 2002 All Rights Reserved Worldwide TABLE OF CONTENTS Parts List INTRODUCTION About this Manual PREPARATIONS Supplemental Loom Support 1 Squaring 2 Flexible Air Link 3 Floor Brackets SAFETY TO START THE LOOM Pre Op Checklist Controls 1 Computer 2 Manual Loom Control Automatic Loom Control USING PAUSE STOP EMERGENCY STOP RESTARTING AFTER AN EMERGENCY STOP Reversing Cloth Direction ADJUSTMENTS Compressor FR REGULATORS CYLINDER FLOW CONTROLS SYNCHRONIZED LOOM MOTION Automatic Cloth Advance Speed Adjustment Automatic Advance and Cloth Beam Gear Adjustment Dobby Cylinder Speed Adjustment Beater Speed Adjustment Cloth Storage Power Control CLOTH BEAM ROTATION ADJUSTMENT Adjusting Lever Sleeve Exchange PRESSURE ROLLER TEMPLE SYSTEM Setting the Temple Rollers Temple Rings WARP TENSION Set Tension Troubleshooting Tip SHUTTLE BOX ADJUSTMENT Backplate Tilt Backplate Cant Shuttle Box to Race Adjustment Box Timing NYO Vi vi vi Vi BWW WW LUN N NON NOR RRR e i n rr 0 gt S SO SO SO O KQN A Li Li Vi dI LI LI LI NINNI n CO SC Page i TABLE OF CONTENTS Page ii MAINTENANCE Daily Weekly Monthly As Needed
8. O MANUAL control on the Control Box to MANUAL Load an empty shuttle into box 2 push it all the way back against the picker Again at the Control Box turn the TURN ON PUSH OFF button clockwise The loom is now operational Page 5 INDUSTRIAL DOBBY LOOM MANUAL Automatic Loom Control Page 6 e Using the hand control that connects to the Control Box depress the ADVANCE button once the Cloth Beam rotates a degree or so e Depress the DOBBY button the harnesses lift e Depress the SHUTTLE button the shuttle shoots repeat e Depress the DOBBY button the harnesses drop e Depress the BEATER button the beater advances Depress the BEATER the beater returns If any of the italicized actions did NOT occur refer to the trouble shooting guide at the end of the manual If the loom appears to be operating satisfactorily proceed to Automatic Loom Control Automatic Loom Control means hands free operation Your loom will automatically cycle through it s pre programmed weaving plan yov ll need only to load and replace bobbins as they empty This will be your usual weaving mode your production mode BE SAFE If you need to suddenly stop your loom at any time push the EMERGENCY STOP on the Control Panel However if you use the EMERGENCY STOP yov ll likely need to make an adjustment in your program Remember the EMER GENCY STOP will not allow the loom to proceed to the end of the current pick cycl
9. ace alignment level or slightly higher 1 16 or less Shelf cannot be lower than the race The shuttle boxes must carry a slight downward angle relative to the shuttle race This angle will cause the shuttle to hug the race as it travels across Ifthe boxes are misaligned in the opposite direction the shuttle will take on an errant trajectory and may porpoise off the race obviously creating an unsafe condition Race Angle Exaggerated Page 19 INDUSTRIAL DOBBY LOOM MANUAL Backplate Cant The shuttle box assemblies must also carry a slight forward angle In the same way that a bit of downward angle causes the shuttle to stick to the race a slight forward canting of the backplates will keep the shuttle properly located against the reed as it travels across the loom Too much angle will cause the shuttle to bounce off of the reed and exit the loom area al Race agnk p ___T t poe i O Shuttle Box to Race There are two critical alignments to consider here Alignment 1 The leading edge of each shelf in the Shuttle Box Assembly must be at precisely the same elevation as the top of the race alignment A in the diagram below You may check this by laying a straight edge between a box shelf and the race Remember the box assembly will be adjusted at a very slight to no angle so its only the edge of the shelf immedi ately opposite the end of the race that concerns us here This edge shou
10. ce 2 Dobby 3 Beater 4 Box Changing 5 Automatic Cloth Storage Be Safe Put the loom in Manual mode when making any adjustments This setting is made at the Automatic Ad vance Cylinder on the left side of your loom Find the upper most cylinder mounted just below the left beater cylinder You ll see that there are two plastic air tubes coming into the cylinder At both connect ing points there is an adjusting screw These are the flow controls Use a small screwdriver to turn each screw in or out Turn the screws counterclockwise to accelerate and clockwise to retard the action of the Automatic Cloth Advance You ll probably want to operate this system as quickly as possible M Controls Sleeve Spacer Hi To adjust the Automatic Advance and Cloth Beam Gear Mesh 1 Loosen the two bolts holding the left Fafnir VCJT1 bearing 2 Rolling the cloth toward you feed a single piece of paper between the small Automatic Advance gear and the larger cloth beam gear stopping when the paper is trapped between the gears Dobby Cylinder Speed Adjustment controls harness lifting Beater Speed Adjustment Cloth Storage Power Control INDUSTRIAL DOBBY LOOM MANUAL 3 Push down on the Cloth Beam to seat the gears into the paper 4 Retighten the VCJT1 bearing 5 Roll the Cloth Beam to check for binding between the gears does not get harder to turn in one spot If it does then rep
11. e No unintended effects Stops the loom immediately mid cycle Unintended Effect The loom resets at the beginning of the next cycle may result in a flaw in the fabric discussion below The boss comes running AFTERAN EMERGENCY STOP Page 8 If you ve used this mode your loom will likely have stopped some where mid cycle that is anywhere between a cloth advance and a beater return However when you re start the loom it will re set automatically at the beginning of the next cycle It will simply delete whatever weaving operations were yet to go when it was shut down If you continue weaving in the AUTO mode you ll develop a flaw in the fabric Solution 1 Switch the loom to Manual at the Control Panel 2 Determine where you are in the weaving sequence Reversing Cloth Direction 3 4 INDUSTRIAL DOBBY LOOM MANUAL Use the hand control to advance through the remaining steps of the cycle As a reminder each cycle consists of the fol lowing sequence of steps ADVANCE gt DOBBY gt SHUTTLE gt DOBBY gt BEATER gt BEATER RETURN THE LOOM TO AUTO PRESS RUN AND CON TINUE It sometimes happens that you ll want to reverse the rotation of your cloth you want to back up This is possible on your IDL but it does require some extra effort and you ll have to unwind the cloth by hand 1 Turn off the Cloth Storage Regulator Switch at the left side of the loom
12. e however when you restart the loom it will automatically move to the top of the next cycle see Restarting After an Emergency Stop on page 8 INDUSTRIAL DOBBY LOOM MANUAL 1 Set the AUTO MANUAL control on the Control Box to AUTO the red light on is CAUTION The next step will put the loom in motion Be sure that no one is standing at either end of the shuttle race and that all hands are clear of the front of the beater and other pinch points 2 Now if you re ready press the green RUN button the green light is on the red light is off the loom will cycle continu ously 3 Hit the PAUSE button at any time to temporarily stop the loom the green light is off the yellow light is on the loom stops USING PAUSE 4 There are four practical ways to stop your loom STOP EMERGENCY Hit STOP STOP Hit PAUSE Hit EMERGENCY STOP e Pull the plug In the end each of these actions will bring the loom to a standstill but different situations call for different methods Page 7 INDUSTRIAL DOBBY LOOM MANUAL EMERGENCY STOP RESTARTING APPLICATION To stop the loom for any reason To resume press RUN To stop the loom when the shuttles don t fully box Press PAUSE to resume When you need to stop NOW Turn the loom on Press Run When all else fails ACTION Loom works to the end of the cycle and stops No unintended effects Interrupts the loom mid cycl
13. e shed Bring the holder up until the ridges on its platform just contact the bottom of the warp The platform should be parallel with the warp e Tighten the Temple Holder Bracket adjusting bolt Temple Rings WARP TENSION INDUSTRIAL DOBBY LOOM MANUAL Slide the leading roller with the majority of the needled rings into its slot on the Holder Bracket Seat the roller atop the warp and lock it down with a hex key Install the after roller with rubber grips It bolts in optional e Check to be sure that everything is properly tightened down The selvages should run freely across the bracket Using a Temple System is somewhat of an art and opinion varies amongst weavers about things like the choice of rings and the efficacy of the after roller However we can offer some useful guidelines to help get you started We provide you will a set of general purpose rings If your leading roller is holding the selvage sufficiently well and isn t causing looping or leaving a perforated line in the warp you re doing fine If however you re having problems you made need to investigate different rings As a rule of thumb heavier yarns need rings with longer and fewer needles Finer yarns require rings with more and shorter needles For additional information please contact an AVL Customer Ser vice Representative The warp tension device on your loom offers a number of advan tages chief amongst these is that
14. eat the procedure with two pieces of paper and so on until the beam rolls freely The speed at which the har nesses are raised and lowered m is controlled from the Dobby sl Cylinder This is the large air cylinder that extends from the FO2A MI bottom of the dobby head on adjusts the harness in a the right side of the loom You downward set the flow controls on this movement cylinder in exactly the same FO2B way that you adjust those on adjusts f i the lifting the Automatic Advance Cylin speed der Remember clockwise retards counterclockwise speeds The action of the harnesses needs to be coordinated with the action of the Automatic Advance Beater speed and force is a function of air pressure Use the lowest measure setting needed to achieve a firm beat Note that we refer to power not speed The only thing you need be concerned about here is that the action of the Cloth Storage Cylinder is not greater than that of the Automatic Advance Cylinder directly above it If the Storage Cylinder is set to over power the Advance Cylinder it will cause the warp to creep To prevent this set the regulator gauge at about 6 lbs just enough that the cloth storage mechanism keeps slack out of the cloth after it rounds the breast beam Page 13 INDUSTRIAL DOBBY LOOM MANUAL CLOTH BEAM The number of picks per inch ROTATION that you ll achieve is determined ADJUSTMENT to by the degree of rotation of the es
15. ed to for your IDL to function properly Your compressor must be able to deliver a minimum of 24 cubic feet of air per minute at 150 pounds per square inch The FR Filter Regulator is mounted on the back of the Computer Cabinet This is where the air line coming from the compressor connects to the loom The primary function of this device is to meter the air pressure coming into the system Air pressure is measured in pounds per square inch P S I If you re not familiar with pneumatic systems just think of air as you think of gas in your car The more air the more power You ll see a gauge on the FR and an adjustment knob immediately above it Turn this knob clockwise to increase pressure You should start pressure from the FR at 105 p s i The operating pressure is generally around 120 p s i REGULATORS CYLINDER FLOW CONTROLS Speed Controls INDUSTRIAL DOBBY LOOM MANUAL In addition to the FR there are other regulators that meter the amount of air that is delivered to the different loom systems These are located on the component board in the computer cabinet in the Component Box to the left of the FR Each regulator has a gauge and a yellow plastic locking ring REMEMBER regulators con trol power FLOW CONTROLS discussed below control the speed at which your systems operate Each regulator controls one system and is labeled on the air board in the computer cabinet Consult the chart below to determine initial
16. etween it and the loom Simply connect a foot or more of 3 8 air hose between the FR and the end of the compressor line This link will dampen vibration between your loom and the incoming air line lessening the possibil ity of loosened fittings 3 Floor Brackets Your loom is equipped with special shock absorbing pads which will retard its tendency to walk In some situations the loom may need to be anchored to the floor Brackets made for this purpose are available from AVL If you opt to bolt your loom to the floor be sure to first check its squareness Page 3 INDUSTRIAL DOBBY LOOM MANUAL Bolting the loom to the floor will overtime reduce the need SAFETY Page 4 to readjust the squareness of the loom and the box adjust ments Yes we need to talk about safety Any piece of equipment from a hammer to a buzz saw can be hazardous if it s misused or misun derstood The IDL is fitted with a variety of safety devices but the critical element in using this machine safely is your good COM MON SENSE and ATTENTION TO THE RULES And the rules are as follow 1 Never under any circumstances remove or disable one of your loom s safety devices 2 Erron the side of caution if something seems wrong as sume it is Stop the loom until you ve figured it out 3 Don t take chances be particularly careful about your hands 4 Disconnect both electrical power and air before you do any mainte
17. he less picks per inch The Pressure Roller allows you to weave without using your Cloth Storage system So you can cut off your work at any time without losing warp tension To start 1 Pull the warp approximately 10 beyond the Cloth Beam 2 Push the Pressure Roller into the warp under the Cloth Beam until it snaps into place 3 To remove the roller relieve tension two knobs in front under the Cloth Beam push the arm and remove the roller Page 15 INDUSTRIAL DOBBY LOOM MANUAL TEMPLE SYSTEM to prevent draw in Setting the Temple Rollers Page 16 The Temple System is used to maintain a good selvage and prevent draw in You l usually deploy it after you ve woven off a yard or so of fabric once you have selvage enough to work with It con sists of two rollers barrels working in tandem which grab the selvage and prevent it from drawing in This device looks complicated but is in fact relatively easy to work with Refer to the accompanying illustration and step by step instructions for guidance in using this system ee i d ES i eroe G l l a i Pi Ul e Check the routing of your fabric against the illustration e Loosen the adjusting bolts on the Temple Holder Bracket so that it s somewhat movable e Swing the Temple Holder Bracket up and in so that it is about 1 4 below the warp with the selvage just touching the inside of the bracket Open th
18. ld be at the same height as the top of the race so that the shuttle can make a smooth entry into the Shuttle Box Reed Shelf m j y B Ne I Page 20 Box Timing INDUSTRIAL DOBBY LOOM MANUAL If the box shelves are lower or higher than the race you ll need to loosen the bolts in the large Box Mounting Bracket that attaches the Shuttle Box Assembly to the side of the loom This will allow you to make the necessary adjustment Binder Tensioners Bobbin Sensor A Shuttle Retainer cA he Reflective Shuttle Tape Sensor 1 amp 4 will speed fey 2 amp 3 will speed slow the downward fm slow the upward motion motion of box assembly 2 The shelves in the box must be in the same plane as the race If you sight down the end of the race you ll note that it s cut on an angle The angle of the shelves must correspond alignment B Again if you need to correct this alignment loosen the Box Mounting Bracket and move the box assembly into position It s important that you get the timing of your boxes right If a box moves too slowly the picker will strike a shelf If it moves too fast the assembly will be subjected to constant jarring and possible damage Because the action of the boxes needs to be synchronous keep the up down box speed equal Page 21 INDUSTRIAL DOBBY LOOM MANUAL MAINTENANCE Daily Weekly Monthly As Needed Page 22 The Industrial Dobby Loom is
19. nance on your loom 5 Don t guess If you re unsure about anything and this manual doesn t help call our technical support number at 800 626 9615 6 Never stand at the end of the shuttle boxes when the loom is in motion BE SAFE You ll come across other safety tips as you read more about your IDL PLEASE if you read nothing else in this manual read this safety information TO START THE LOOM Pre Op Checklist Controls INDUSTRIAL DOBBY LOOM MANUAL We advise that you first operate your loom with empty shuttles This will give you an opportunity to study the action of the loom and will point up any operating deficiencies But before you put the loom in motion 1 2 Check that the shuttle boxes align with the shuttle race Check that the shuttle boxes traverse their support rods without rubbing or binding move up and down by hand Check that the FR is set to operate at 105 pounds of pres sure Check that your compressor is rated to deliver at least 24 cubic feet of air per minute at 150 p s i Computer Assuming that your computer is connected to the Compu Dobby and that you ve loaded your software make those menu selections that are appropriate for a plain weave this provides a good test scenario Manual Loom Control Assuming as well that your air line and power cord are connected e Switch on the Compu Dobby at the power center or front of the Compu Dobby Set the AUT
20. operating values for each system You may find that these settings need to be modified depending on the weight of your yarns operating speed and other factors Regulator System P S I Setting SVI Cloth Storage 10 20 SV2 Beater 60 SV 3 Dobby 60 SV4 Shuttle right 50 SV 5 Shuttle left 50 The speed at which each of the loom systems operates is regulated by flow controls located at various points on the loom Cloth Advance Automatic Advance Cylinder Harness Lifting Dobby Cylinder Box Changing Box Changing Cylinders Cloth Storage Cloth Storage Cylinder These different systems will operate according to the choreography which you establish You ll want the loom to lift beat and pick according to your weaving needs at a particular moment This means you ll need to set the controls for each of the systems It sounds much more complicated than it really is and once you ve made your initial setting you won t need to change them for the balance of your warp Your installer will make the initial settings Page 11 INDUSTRIAL DOBBY LOOM MANUAL SYNCHRONIZED LOOM MOTION Automatic Cloth Advance Speed Adjustment Automatic Advance and Cloth Beam Gear Adjustment Page 12 There is a particular order in which you ll want to adjust each of the loom s mechanisms When you ve finished all the systems will work smoothly and in concert We recommend that you proceed as follows 1 Automatic Cloth Advan
21. p Collar 55 Beater Assembly Mounting Bracket 56 Beater Slide Bracket 57 Beater Tube 59 Rear Beater Shock Absorber Assembly Your Industrial Dobby Loom IDL is designed to be low mainte nance and immediately user friendly If you are an experienced power loom weaver you may initially think this loom is a little quaint If you re more familiar with handlooms it may seem im possibly busy and complicated With a little hands on experience however you ll find that the IDL is just right Considerable attention has been paid to the needs of the weaver In addition to those things we know you ll need we ve provided features that we think you ll want For example the cloth beam can be removed so that you ll have more working room when sleying the reed and we ve placed the main operating controls conveniently front and center Feature for feature you ll soon discover that the IDL is the best loom in its class We know that most people have neither the time nor the interest in wading through pages of jargon laden techarcania We ll not burden you with such here However there is certain amount of information that you will need like how to turn the IDL on how to make adjustments and what you ll need to do to keep your loom in top working condition Wherever possible we ve provided you with fast track explana tions through processes In most cases more detailed information will be
22. set the tension and tie off with a piece of cord Loose the screw on the Right Vertical Cap which holds the Cloth Beam Anti Rollback Bearing Beater pressure not correct for particular yarns being woven Cloth Beam Gear not properly meshing with the Automatic Advance Gear gear mount bracket loose Cloth Storage System not turned on Exceeding pick count possible with yarn being woven this is especially a problem with thick yarns at high pick counts Page 25
23. tablish p p i Cloth Beam This is established mechanically Move to the left side of the loom NI At the end of the Cloth Beam is a Ves gear This gear meshes with a a second gear mounted below it Connected to the bottom gear is a slotted lever There are two ways to adjust your pick count 1 By increasing or decreasing the stroke of the adjusting lever 2 By exchanging one sleeve for another of a different size PICK CHART Sleeve Lever Picks Size Position Per Inch Small Sleeve 1 1 5 16 Top 1 5 16 Middle 1 5 16 Bottom Small Sleeve 2 1 13 16 Top 1 13 16 Middle 1 13 16 Bottom Small Sleeve 3 2 5 16 Top 2 5 16 Middle 20 2 5 16 Bottom 30 Longest Sleeve 4 2 9 16 Top 2 9 16 Middle 2 9 16 Bottom 60 Page 14 Adjusting Lever Sleeve Exchange PRESSURE ROLLER INDUSTRIAL DOBBY LOOM MANUAL These pick counts are approximations and are related to warp tension and by how hard the weft is beat into the warp Increasing the warp tension and how hard you beat can increase the pick count You l note that the Adjusting Lever is connected to the rod end of the Automatic Advance Cylinder by a locking T handle If you loosen this knob you can move the rod end up or down in the slot When you move the rod end up the Cloth Beam rotates more and you have less picks per inch Your IDL is provided with four Automatic Advance sleeves Each of these will cover a different pick range The smaller the sleeve t
24. tendency to veer or yaw away Poor air quality will produce an infinity of Gremlins This can t be stressed enough Dirt oil and moisture in your air delivery system can clog and erode valves and other air components Af fected valves may operate sluggishly or not operate at all Always use a clean air source The shuttle boxes are fitted with various optical sensors These are part of a larger traffic control system not unlike a modern railway switching system that prevents two shuttles from firing simultaneously Keep these and the reflectors opposite them free of accumulated lint If for some reason two shuttles do present at the same time this system will shut the loom down the shed will open slightly and the loom will abruptly turn off 1 Check for correct air pressure 105 p s i Check that shuttle has boxed completely 3 Shuttle sensor out of adjustment see Adjustments section 4 More than one shuttle presenting 1 A shuttle may have been placed in the wrong box il A drafting error may have been made check the program 1 Bobbin improperly wound f Knot in weft catching on shuttle tensioner 3 Bobbin nearly empty and out of balance 4 Shuttle boxes need to be adjusted see Adjustments Page 23 INDUSTRIAL DOBBY LOOM MANUAL Shuttle Doesn t Box Completely Loom Fires On Empty Box Loom Stops Red Light On Loom Stops Green Light On Harnesses Drop or Don t Lift
25. ttle easier to learn we ve created a quick reference for you to follow You may want to copy it and keep it at the loom Arm above horizontal Release cord at the spring Arm below horizontal Take up cord at the spring Warp too loose Move weight out Warp too tight Move weight in Troubleshooting Tip SHUTTLE BOX ADJUSTMENT Backplate Tilt INDUSTRIAL DOBBY LOOM MANUAL The brake drum on the warp beam may in areas or times of high humidity swell a bit where the end grain is exposed This swollen grain can prevent the tension cable from slipping as it should When this happens the tension arm will develop a habit of rising and then suddenly dropping To correct this problem unwind the brake cable and lightly sand the grain in the cable race of the drum Use a very fine grade of sandpaper 220 400 and sand as little as possible Never under any circumstances should you apply a wax or finish or otherwise treat the cable race on the drum The shuttle boxes were adjusted when the loom was first installed at your site however over time they may require some attention You ll know it s time to check these adjustments if your usually tame shuttle seems suddenly to have become an unguided mis sile There are three alignments essential to satisfactory loom operation e Backplate tilt downward angle zero degree or very slight e Backplate cant forward angle zero degree or very slight Shuttle box to r
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