USER`S MANUAL
Contents
1. Maximum working width is 50mm per cut Perform two or more rounds of cut to get desired width Additional waste disposing device patented Additional knife sharpening clutch device Easy replacement of parts patented Specification Size 530 W x 340 D x 370 H Weight 39kg Motor Power 200W 400W Motor Speed 1000rpm 1200rpm Machine installation N Warning technician gt Connect the ground earth wire gt The machine must be installed by a trained technician For electrical wiring consult the dealer where you purchased the machine or qualified Do not plug in until the installation is complete You may step on the pedal by mistake and operate the machine causing physical injuries An unstable connection may cause electric shock or malfunction gt Use both hands when leaning the machine backwards or returning it to its up right position If you perform with one hand your hand may slip and get caught between objects due to the machine s heavy weight resulting in injury 1 Machine Installation Install the machine on the table with the hinge hinge bar wooden screws Leave 150mm space from the table to the bottom tip of the knife to collect dust particles 2 Motor Installation 1 Use 200W 400W motor 2 Use A type V motor pulley of 50 60mm in diameter Mount A type V belt around the machine pulley and motor pulley 3 The motor is inst2. USER S MANUAL KM 76 Leather Skiving Machine 1 FOR AT MOST USE WITH EASINESS PLEASE CERTAINLY READ THIS MANUAL BEFORE STARTING USE 2 KEEP THIS MANUAL IN SAFE PLACE FOR REFERENCE WHEN THE MACHINE BREAKS DOWN 1 Thank you for purchasing our product Based on the rich expertise and experience accumulated in industrial sewing machine production SUNSTAR will manufacture industrial sewing machines which deliver more diverse functions high performance powerful operation enhanced durability and more sophisticated design to meet a number of user s needs Please read this user s manual thoroughly before using the machine Make sure to properly use the machine to enjoy its full performance The specifications of the machine are subject to change aimed to enhance product performance without prior notice This product is designed manufactured and sold as an industrial sewing machine It should not be used for other than industrial purpose SunStar CO LTD ___ Table of Contents _ of Contents Summary 7 sgi 1 Specification 8 2 Machine Installation eee eeeeee eee eeneee cee eseeeeseeeseeeeeeeeeeeeeees 8 3 Rotation Direction 8 4 Adjustment scleral ona sale 10 1 Presser
3. 1 Replace V belt 2 Mix oil and grease in the warm container 3 supply oil to feeding roller shaft Warm wheel erodes too quickly Not enough oil Feeding roller s shaft is melting down 1 Supply oil 2 Supply oil to feeding roller shaft Knife shaft gets heated Insufficient oil supply Knife shaft and knife shaft metal knot are too tight 2 Make adjustment Knife is still dull even after sharpening Sharpening stone has oil stain Sharpening stone has iron build up Flat belt is idling due to oil stain ors 1 Rotate sharpening stone and grind stone with dresser 2 Place back the clutch that cleans the flat belt oil stain Noisy sound Machine rotates too fast Warm wheel shrank due to grinding Insufficient oil supply Clutch block is too eroded Clutch lever is loose when clutch is turned off 1 Change rotation to 1000 1200rpm 2 Replace 3 Supply oil on regular basis 4 Replace clutch block Supply oil to clutch block 5 Adjust the clutch lever up so it does not move
4. on If possible install the machine away from source of strong electrical noise such as high frequency welding machines Warning Keep motor cover in place before operating turn off power before inspecting or adjusting 1 5 Safety devices Caution Safety label It describes cautions during the machine operation Belt cover It prevents any contact between body and take up lever Motor cover A device to prevent hands feet and clothing from getting jammed by the motor Label for specification of power It describes cautions for safety to protect electric shock during the motors rotation Voltage input use Hz 1 6 Caution Mark Caution mark is attached on the machine for safety Position When you operate the machine follow the directions on the mark A DANGER 98 A Moving blades inside power o aa 2 AB 1 7 Contents of Caution Marks 1 Warning Moving blades inside Lockout power before servicing eso Ja AHO USC 2190 AAS WFAA Summary SUNSTAR leather skiving machine is built on new technology and materials with high precision durability and easy usage It is most suitable for edge skiving and whole skiving any kind of leather vinyl and rubber products for shoes bags belts purses gloves and etc main features are as follows
5. Foot 10 2 KAS 11 3 Feeding Roller T E I 5 Sharpening the Knife iE r en hank EE R EEE E 12 6 Using the Dresser 12 7 Replacing Parts siers E E 1 1 Replacing Shari ieSe E E 2 Replacing Feeding Roller 13 3 Replacing K fe bias ais erisin Scary a 8X NE EKES KE EEEE E KE ETE ROEE 14 4 Replacing Warm and Warm Wheel ccesecscccsccscstcescctccceescatcetocecscesseedcetocecccestestnescce REEE 14 8 Adjusting Knife Shaft eee 15 9 Cause of Trouble and Troubleshooting 16 Safety Rules Safety instructions on this manual are defined as Danger Warning and Caution If you do not follow the instructoins physical injuries and machine damages might be occurred Danger This indication should be observed definitely If not there will be a danger dur
6. alled correctly if the motor pulley is in parallel line with the machine pulley and the distance between the two pulleys is over 300mm 3 Rotation Direction The rotation direction of the machine pulley should be clockwise when seen from the right hand side of the machine as in Figure 1 Figure 1 Lubrication N Caution Do not plug in until the oil supply is complete You may step on the pedal by mistake and operate the machine causing physical injuries gt When handling lubricants use safety goggles and gloves to protect your eyes and skin from inflammation Do not drink lubricants which may cause vomiting and diarrhea Keep lubricants out of the reach of children gt You must supply oil when using the machine for the first time or if it has not been used for a long time Warm and Warm Wheel replace grease once a month Feeding Roller Shaft Presser Bar Lifter Roller Bracket Support Arm Pillar Screw Knife Shaft lubricate every second or third usage Clutch Block Knife Shaft Warm Clutch Lever Shaft Handle Figure 2 1 Clean machine parts which are oil coated to prevent rusting with dry cloth to avoid oil stains on the materials before operating the machine 2 After installing the machine you must supply oil at points A H indicated in Figure 2 Be careful not to ever start the mach
7. e four screws that hold the knife in its place and remove the knife slowly Note Since the knife is compressed you need a tool such as a driver to push it out with even pressure as you twist the knife out of its place with your hand 3 When replacing the knife remember to clean it completely with petroleum since new knives are oil coated to prevent rusting 4 Empty the waste inside the knife and on the sides where the knife shaft is installed Install the knife by pushing it back into its place Figure 19 5 Twist the knife in as you tighten the screws with even strength for installation Note Be careful not to tighten the screws unevenly since it may lead to knife oscillation 4 Replacing warm and warm wheel 1 Remove the cover of the warm container and lid screw Note Be careful of the leaking oil 2 Loosen the fixation screw of the warm wheel and take the warm wheel out from the top by pushing the driving shaft inward 3 Take the warm gear out of the place where you removed the lid screw 4 Install everything back to where it belongs according to proper key groove after replacement Figure 20 SunStar 8 Adjusting Knife Shaft Figure 21 The most important feature to bear in mind for these kinds of machines is certainly the rotation without knife oscillation But after a long period of usage oscillations do ta
8. er will turn on its side vis a vis the inner surface of the knife 5 Material A If it is hard leather pull the spring lever forward to readjust it more tightly If it is soft leather loosen the spring 6 Soft leathers such as those from horse and sheep roll easily around the feeding roller So use thin feeding roller or rubber roller 4 Ruler When edge skiving determine the width by using the ruler 1 Fix the ruler on the plate with washer and fixation screw leaving a certain distance D Align the ruler so that it is fixed on the left hand side of the presser foot 2 By changing the ruler s location edge skiving width D can be adjusted at anywhere between 0 50mm according to user s needs SunStar 8 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 11 Sharpening the Knife Figure 11 Figure 12 The knife will produce bad cuts as it becomes dull during usage so you need to sharpen the knife according to the following procedures 1 Knife sharpening clutch device A The sharpening stone rotates when you turn the shifting knob clockwise B When sharpening is complete you must lift the clutch lever up and stop the sharpening stone 2 The distance A between the knife and the presser foot should be about 0 5mm 3 If you turn the stone control grip slowly coun
9. ine s rotation until oil supply is complete at all indicated points Adjustment The machine has been adjusted prior to delivery However check rotation direction number of rotation and lubrication before repeating the following adjustment and performing desired skiving 1 Presser foot 1 Push the presser bar lifter down 2 Insert the presser foot control screw and determine the desired distance A between the presser foot and the knife as in Figure 4 A Narrow small Cutting Turn control screw counterclockwise to lower the presser foot after determining an adequate cutting width for the material B Wide large Cutting Turn control screw clockwise to lift the presser foot Measure the distance A from the left hand side of the machine Figure 3 3 Cutting side ways Figure 5 Turn control screw clockwise or counterclockwise to get the desired angle of the presser foot 4 Cutting with shapes Switch the presser foot to desired shape such as stripe or sandpaper Figure 4 5 Removing the presser foot Lift the presser bar lifter up dismount the presser foot spring horizontally loosen the presser foot tension screwG and take loop out which will allow you to remove the presser foot and the fixation pin 1 set includes 4 presser foots Figure 5 Note When replacing the presser foot lift the presser foot up with the presser foot control screw bef
10. ing the installation conveyance and maintenance of the machine Warning When you follow this indication injuries from the machine can be prevented Caution When you follow this indication error on the machine can be prevented 1 1 Machine Delivery Danger Personnel with a full understanding of the safety guide must deliver the machine Note the following directions when delivering the machine At least 2 persons are required to carry the machine Thoroughly wipe off any oil on the machine to prevent accident during delivery 1 2 Machine Installation Caution Meet the following conditions for proper installment of the machine Otherwise it may cause physical damage on the machine including mechanical problem or failure Open the package from the top in the reverse order of how it was originally packed Be extra careful of the nails on the box Install air controller and clean the machine regularly to prevent pollution and rust from dust and moisture Avoid direct sunlight Leave open space of at least 50cm around the machine for easy access in case of repair Do not operate in an environment where there is danger of explosion Do not operate in areas where there is danger of explosion including places where large quantities of spray products e g aerosol are used or oxygen is stored unless the product has specific indications that it guarantees the prevention of explosion This machi
11. ke place In such cases adjust as follows 1 Vertical knife oscillation Tighten the knot of the knife shaft knot with the knife shaft knot spanner Note Be careful not to tighten the knot too much since the knife will not move at all Tighten the knot just so that it does not become loose during operation 2 Horizontal knife oscillation Tighten the knot 1 of the knife shaft metal little by little and tighten the 2 Do not tighten too much allow the knife to rotate smoothy Repeat to adjust the gap on both right and left 3 You must adjust the knife shaft when replacing the knife 15 Cause of Trouble and Troubleshooting Trouble Cause Troubleshooting Knife oscillation 1 Knife oscillation due to bad installation 2 Horizontal knife shaft oscillation 3 Knife shaft metal is loose 4 After sharpening the sharp end shifted to the opposite position 5 Presser foot is loose 6 presser foot and feeding roller are too close together 7 Feeding roller has bad quality m m 8 Center pin of the feeding roller support arm is not inserted completely 1 Remove knife thoroughly clean sides that come into contact with the knife 2 Adjust and tighten knife shaft knot 3 Adjust knife shaft metal knot 4 Re sharpen the blade to its proper direction with the rod stone 5 Retighten presser foot tension screw 6 Lift presser foot with presser foot control screw 7 Replace bad feeding ro
12. ller 8 Tighten center pin fixation screw after pushing the center pin in completely Wobbly cuts Blade is damaged Knife shaft oscillation from front to back Knife shaft oscillation up and down On Sharpen the knife Adjust and tighten knife shaft knot Adjust by slowly tightening knife shaft metal knot On Material does not enter smoothly Distance between the feeding roller knife is too close 2 Presser foot surface oscillation from front to back 3 Bad cuts dull blade 4 Spring on the spring lever is too strong 1 Lower feeding roller slowly when the material is thick 2 Replace presser foot with a new one 3 Sharpen the knife 4 Loosen the spring on the spring lever or grind the presser foot path to allow the material s smooth entry Material gets stuck in the knife 1 Blade protrudes forward more than presser foot 2 Presser foot protrudes downward more than the blade 3 Feeding roller and knife are too wide apart 1 Adjust the distance between presser foot and blade to 0 0 5 2 Lift presser foot up 3 Adjust with control screw Waste not disposed properly 1 Rotates too fast 2 Feeding rollers surface has bad quality 04 1 Replace motor pulley with a smaller one 2 Replace bad feeding roller Feeding roller does not operate V belt is cut Warm container is running out of oil Feeding roller s shaft is melting down
13. ne does not come equipped with lighting so the user has to install the lighting at the workplace himself Note For details of machine installment refer to 2 Machine Installation 1 3 Machine Repair Danger Only our authorized and trained technician in charge of A S should perform machine repair Before cleaning and repair be sure to turn the power off and wait for about four minutes for the machine to discharge completely No part of the machine or specifications may be modified without prior consultation with our company Unauthorized modifications may jeopardize safe operation Incase of repair replace only with SunStar s standard OEM parts After repair return safety cover back on the machine 1 4 Operating machine Warning KM 76 is made for industrial use Follow the following indications when operating the machine Read through this manual carefully and completely before operating the machine Wear proper clothes for work Keep hands or other parts of the body away from the machine s operation parts needle shuttle thread take up lever pulley etc when the machine is operating Keep the covers and safety plates on the machine during operation Be sure to connect the earthing conductor Turn off the main power and check if the switch is turned off before opening electric boxes such as the control box Do not step on the pedal when turning the power
14. ore pushing the presser bar lifter down Be careful with the presser foot because it may scratch the feeding roller if it is not lifted to a certain level Now loosen the screw and remove the loop from the back which will allow you to dismount the presser foot and the fixation pin Refer to Figure 3 2 Knife 1 The knife will gradually shrink with constant sharpening and usage so you will have to adjust the distance B between the presser foot and the blade each time 2 As in Figure 6 if you turn the control grip counterclockwise left the knife will move towards the indicated direction left 3 As in Figure 7 distance B between the presser foot and the blade may vary according to the working material nevertheless the standard distance B generally used is as follows A Thin material 0 2 0 3mm B Medium material 0 3 0 5mm C Thick and strong material 0 5 0 8mm 3 Feeding roller 1 Feeding roller must always maintain a certain parallel distance from the inner surface of the knife As in Figure 9 the distance C can be adjusted depending on the material s thickness 2 To increase the distance C turn the control clockwise and to close the distance turn it counterclockwise 3 Distance C between the feeding roller and the knife Figure 9 A Thin material 0 3 0 5mm B Thick material 1 1 5mm 4 Sideways Figure 9 Turn the control screw clockwise and the feeding roll
15. terclockwise the sharpening stone will come into close contact with the knife and start the sharpening process Note Be careful not to bring the sharpening stone too close to the knife because the knife can get overheated and this may lead to knife oscillation 4 If the sharpened edge of the knife has the sharp end shifted to the opposite direction bring the rod stone in parallel contact with the knife s inner surface to re sharpen the blade to its proper direction 5 After sharpening process is complete return the sharpening stone to its original place and turn the clutch off A Using the Dresser You will not be able to sharpen the blade if iron builds up or oil stains on the sharpening stone In such cases grind the stone using the dresser without brining it too close to the stone Note To prevent stone particles from flying into your eyes wear safety goggles before grinding to smooth the surface of the stone Figure 13 12 SunStar GD Replacing Parts 1 Replacing Knife Sharpening Stone Figure 14 Figure 15 Figure 16 1 Carefully observe how the flat belt is mounted before removing it 2 As in Figure 14 hold sharpening stone with your left hand and pulley with your right hand Turn your right hand counterclockwise to separate the pulley from the stone 3 Insert the stone knot as in Figure 15 in the knot s holes T
16. urn it counterclockwise to separate it from the stone Figure 15 4 When remounting the flat belt as in Figure 16 remount it so that the stone rotates clockwise when seen from the top of the machine Note If you have separated the stone from the knot to replace a new one be sure to install the stone and the knife so that they are 10mm apart as in Figure 16 Note Be careful not to leave oil stains on the stone 2 Replacing feeding roller 1 Relocate the spring lever to bed s lever peg 2 Hold the support arm with your left hand and loosen the center pin fixation screw Pull the center pin to remove the support arm Note Be careful when you are replacing the feeding roller since the knife may come into contact with other objects forcing the blade to lose its sharp edge Take special note of the fact that the joint which rotates the feeding roller is separately Figure 17 assembled and may easily come into contact with the knife as you try to remove it To avoid this from happening support the joint with your hand as you remove it 3 Loosen the screw of the roller based and remove the roller shaft which will allow you to separate the roller 4 Remove the feeding roller support arm as in Figure 17 Figure 18 13 3 Replacing knife 1 Remove the waste disposing plate by using the disposing plate removal shaft as in Figure 19 2 Remove th
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