Instruction Manual HIGH SPEED FLAT BED INTERLOCK STITCH MACHINE VF2400 class This instruction manual includes adjustments dif fered from VF2400. Before using your machine mentioned above, please read both of the instruction manuals and understand the contents well. Af ter reading the instruction manual, please keep it in a location where it is easily accessible to the operator.
CONTENTS Safety instructions ⅰ - iv 1. Name of each part 1 2. Installation 2 2.1 Semi-submerged type 2 2.2 Full-submerged type 5 2.3 Motor, pulley and belt 8 2.4 Hanging belt 9 2.5 Belt cover 9 2.6 Eye guard and finger guard 10 2.7 Thread guide plate 10 2.8 Tape stand (VF2403, 2404, 2503, 2504) 11 2.9 Tape holder (VF2404, 2504) 11 3. Sewing speed and rotating direction of pulley 12 4. Lubrication 13 4.1 Lubricating oil 13 4.2 Lubricating 13 4.
CONTENTS 6. Adjustments 24 6.1 Needle thread tension 24 6.2 Top cover thread tension 25 6.3 Looper thread tension 26 6.4 Removing presser foot and presser foot lift 27 6.5 Looper 28 6.6 Height of needle bar 29 6.7 Front-and-rear position of needle and looper 30 6.8 Needle and needle guard 31 6.9 Height of feed dog 32 6.10 Needle and spreader 32 6.11 Folder (VF2403, 2503, 2404, 2504) 34 6.12 Metering device (VF2404, 2504) 35 7.
Safety instructions １． To ensure safe use ２．Installation and preparation Always observe the following instructions to ensure the safe use of the industrial sewing machines and devices. 2-1 Instruction and training 1-1 Application and purpose The sewing machine is designed to improve productivity in the sewing industry and must not be used for other applications and purposes. Do not use this sewing machine until it can be confirmed that safety measures for the drive units have been taken.
Safety instructions (4) When operating a new sewing machine, make sure the rotating direction of pulley agrees with the rotating-direction mark. 2-5 During operation (1) Be sure to operate the sewing machine with the safeguards such as belt cover, finger guard, and eye guard. (2) Never place the finger, hair or objects under the needle or close to the moving parts while operating the sewing machine. (3) Be sure to turn off the power supply switch when threading or replacing the needles.
Safety instructions 4-2 Alert pictorial markings This mark indicates the warning which, if not heeded, could result in death or Serious injury. This mark indicates the caution for high temperature. This mark indicates the warning which, if not heeded, could result in death or Serious injury. High-voltage applies in the control box. This label indicates that electric shock may be caused.
Safety instructions Rotating direction symbol iv
1. Name of each part Thread guide plate Handwheel Seal plug(lubrication) Oil sight window SP device Needle bar cover Presser spring regulator Needle thread take-up guard Thread tension spring cap Feed regulating pushbutton Side cover Looper thread take-up cover Oil sight gauge Differential feed graduation Supporting plate for looper thread take-up Front cover Finger guard Fig.
Section X -X (1/2) Section Y -Y (1/2) Fig. 2-1 VF2400 2 Refer to the instruction manual of the motor for dimensions A, B, C, and D. Operator Table dimensions: 1200×595×40 center of pulley 2. Installation 2.1 semi-submerged type 2.1.
Section X - X Section Y -Y 3 Refer to the instruction manual of the motor for dimensions A, B, C, and D. Operator 3- φ 9.5 installing hole of motor Table dimensions: 1200×595×40 center of pulley 2. Installation With UT device Fig.
2. Installation 2.1.2 Installation sewing machine ③ ④ 4㎜ ③ ① ② ③ ② Fig. 2-3 machine table ④ Install a machine correctly referring to Figs. 4 and 5. Set the screws ② in the supporting board ① and cover the screws ② with the rubber cushions ③ . Fix the the supporting board ① to the machine table and install a machine securely on the rubber cushions ③ . ☆ The number of spacers ④ VF2400 class Thickness of table The number of spacers ④ 40 ㎜ 3 pcs. ×４＝ 12 pcs. 45 ㎜ 2 pcs. ×４＝８ pcs. 50 ㎜ １ pc.
5 Section E - E Section F - F Section G - G Section H - H Operator magnet Note: 125 is reference dimension which differ by kindes of the motor. “155” in the above figure is the distance to the bottom of the supporting board so it must be set to the dimension where there will be no interference between the motor control panel and the bottom and back end of the supporting board. Supporting board Table magnet magnet 3- φ 9.
2. Installation thickness 20 ㎜ Auxiliary table Fig. 2-6 thickness 35 ㎜ Supporting board Fig.
2. Installation 2.2.2 Installation machine table ③ ② ① Fig. 2-8 Install a machine correctly referring to Figs. 2-8 and 2-9. Set the screws ② in the supporting board ① and cover the screws ② with the rubber cushions ③ . Fix the the supporting board ① to the machine table and install a machine securely on the rubber cushions ③ . Fig.
2. Installation 2.3 Motor, pulley and belt See the instruction manual for the motor used and install the motor properly. 58 ㎜ Clutch motor: 40° To install the clutch motor, align the center of the machine pulley with that of the motor pulley when the motor pulley shifts to the left while toeing down the pedal. 5.5 ㎜ 10 ㎜ M type of V-belt Fig.
2. Installation 2.4 Hanging belt ② ① Before hanging belt, ALWAYS turn the power switch OFF and check that the machine has already stopped. 10 - 20 ㎜ Use the M-type of V-belt. ③ (1) Hang the belt ① on the machine pulley ② , and then on the motor pulley ③ while rotating the machine pulley. (2) Adjust the belt tension so that the belt has a slack of 10 - 20 mm when its center is pushed with 10 N. (3) Lock the motor with the adjusting bar ④ . ④ Fig. 2-11 2.5 Belt cover Set the belt cover ⑤ . (Fig.
2. Installation 2.6 Eye guard and finger guard To ensure safe use, always install the eye guard ① and the finger guard ② on the prescribed position when operating. ① ② Fig. 2-13 2.7 Thread guide plate (1) Put the screws ③ into the hole of the thread guide plate ④ and push it to the left. (2) Fix the thread guide plate ④ with the screws ③ securely. ③ ④ Fig.
2. Installation 2.8 Tape stand (VF2403, 2404, 2503, 2504) (1) Set the tape stand (Fig. 2-15). (2) Fix the tape stand on the machine table with the wood screws ① (Fig. 2-16). (3) Adjust the direction of the tape guide bar ③ to feed a tape into the folder ② smoothly. ① ① ② ③ Fig. 2-15 Fig. 2-16 2.9 Tape holder(VF2404, 2504) Set the tape holder ④ on the screw ⑦ of the top cover and the screw ⑧ of the head cover with the screws ⑤⑥ respectively. ④ ⑥ ⑤ ⑦ ⑧ Fig.
3. Sewing speed and rotating direction of pulley Table 4 shows maximum sewing speed and usual speed for each model. Run a new machine at speed about 15 - 20% lower than maximum speed during the first 200 hours (for about one month) so that a machine can offer a long service life in good condition. The rotating directions of the machine pulley ① and the handwheel ② are clockwise as shown in the figure. If rotated in reverse direction, oil cannot be supplied properly. It can cause the damage to the machine.
4. Lubrication Before lubricating, ALWAYS turn the power switch OFF and check that the machine has already stopped. 4.1 Lubricating oil Use YAMATO SF OIL No. 28. Never add additives to the oil. If added, it can cause the deterioration of the oil and the damage to the machine. ① 4.2 Lubricating When using a new machine, or a machine which has not been run for a while, supply a few drops of oil to the needle bar ① . Fig.
4. Lubrication Before lubricating, ALWAYS turn the power switch OFF and check that the machine has already stopped. 4.3 Changing oil Period of changing: When using a new machine, change the lubricating oil after running a machine for 200 hours (for about one month). After that, change the oil once or twice a year. Procedure for changing: (1) (2) (3) (4) (5) Remove the belt cover. (page 9) Remove V-belt from the motor pulley. (page 9) Remove the machine from the machine table.
5. Proper operation 5.1 Needle system Use UY × 128GAS (UY128GAS). Select a proper needle in size depending on the thickness and type of fabric. Japanese standard Metric standard 9 10 11 12 13 14 65 70 75 80 85 90 Table 5 5.2 Installing needles Before installing, ALWAYS turn the power switch OFF and check that the machine has already stopped. (1) Loosen the screws ① with a screwdriver. (Fig. 5-1) (2) Remove an old needle with a pair of tweezers.
5. Proper operation 5.3 Threading When threaded, rethread after knotting preset threads. When not threaded, thread correctly as shown in Fig. 5-4. Incorrect threading can cause skip stitch, thread breakage, or uneven seam. A, B, C: Needle thread D: Top cover thread E: Looper thread Fig. 5-4 shows threading for 3-needle machine. Two needle threads are used for 2-needle machine. Needle thread Pull out the thread until it is in front of the needles. Then, cut off the knots before needle eye to rethread.
5. Proper operation 5.4 Adjusting thread tension Adjust the thread tension with the thread tension spring caps ① depending on fabric type, thread type, seam width, stitch length, and other sewing conditions. ● To tighten the thread tension, turn them clockwise. ● To loosen the thread tension, turn them counterclockwise. ① Loosen Tighten Fig. 5-5 5.5 Pressure of presser foot Loosen the lock nut ② and turn the presser spring regulator ③ to adjust the pressure.
5. Proper operation 5.7 Adjusting differential feed dog (1) Normal differential feed (gathering) Loosen the nut ① and move the differential lever(left) ② up or down to set it at the desired position. Tighten the nut ① securely. When the differential lever(left) is set at graduation (Long) ③ , the ratio of main feed to differential feed is 1 : 1. To obtain normal differential feed, raise the differential lever(left) above the graduation ③ . The maximum ratio of main feed to differential feed is 1 : 2.
5. Proper operation Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped. 5.8 Adjusting stitch length Stitch length can be adjustable from 1.4 to 3.6 mm. Table 7 shows the number of stitches per inch (25.4 mm) and 30 mm converted to the stitch length. Stitch length （㎜） 1.4 2.0 3.0 3.6 Number of stitch （per 1 inch） （25.4 ㎜） 18 13 8.
5. Proper operation 5.9 HR device and SP device ③ Use SP device (needle thread oiling) and HR device (needle point cooling) as standard equipment to prevent thread breakage and skip stitch when running a machine at high speed or using synthetic thread and/or synthetic fabric. Use dimethyl silicon oil. ① Note: Open the seal plug ① of HR container and the lid ② of SP container to check the oil level. Supply oil if needed. Fig. 5-13 1. When not using SP or HR device, remove the felt ③ or ④ .
5. Proper operation Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped. 5.10 Setting tape (VF2403, 2503, 2404, 2504) Set the tape role on the tape stand ① (Fig. 5-15). Pull a tape forward through the folder ② and set it under the presser foot ③ . ① Unmatched folder width with tape width cannot be folded properly. ③ ② Fig. 5-15 5.11 Metering device (only for VF2404 and VF2504) 5.11.1 Setting elastic tape Set an elastic tape correctly (Fig. 5-16).
5. Proper operation Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped. 5.11.2 Feeding amount of elastic tape Loosen the nut ① and adjust feeding amount while checking the pointer ② and the graduations of the clutch lever ③ as below. ● To increase feeding amount, turn the adjusting screw ④ clockwise and move the pointer ② in the direction “L”.
5. Proper operation Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped. 5.12 Adjusting hemming guide (VF2411) Hemming guide(left): (1) Loosen the screw ② of the hemming guide(left) ① . (2) Adjust right-and-left position to align the fabric end to the left needle. (3) Tighten the screw ② securely. Hemming guide(right): (1) Loosen the screws ④ of the hemming guide(right) ③ . (2) Adjust right-and-left position to align the fabric end with hemming width.
6. Adjustments Before adjusting, ALWAYS turn the power switch OFF and check that the machine has already stopped. 6.1 Needle thread tension As standard, make the distance between the needle thread take-up ① and the center of the left screw ② to 52 mm, and set the part “a” horizontally when the needle bar is at the highest point. 52 ㎜ a T L Adjusting: (1) Loosen the screws ② . (2) Move the needle thread take-up ① to adjust it.
6. Adjustments ☆ Use the needle thread guide when the needle thread forms a loop unstably with stretchable thread like a synthetic thread. As standard, align the center of the needle bar thread eyelet ① eye even with the top of the needle thread guide ② , and they are parallel when the needle bar is at the lowest point. Loosen the screw ③ to adjust the height and rightand-left position of the needle thread guide ② . ② ③ ① Fig. 6-4 6.
6. Adjustments 6.3 Looper thread tension ③ ① 6.3.1 Looper thread tension Decrease The figures show the supporting plate. Align the eyes of the thread take-up eyelets ③④ with mark ② of the cast-off plate ① as standard. Loosen the screws ⑥ and move each eyelet to adjust it. ● To increase take-up amount, move the thread take-up eyelets frontward. ● To decrease take-up amount, move the thread take-up eyelets forward. ② Decrease Increase ⑥ Increase ④ Fig.
6. Adjustments 6.4 Removing presser foot and presser foot lift Removing presser foot (1) Loosen the screws ② of the lifter lever stop ① , the screws ④ of the collar ③ , and the screw ⑧ of the presser foot ⑦ . (2) Push down the lifter lever ⑤ to remove the presser foot ⑦. ① ⑤ Adjusting height of presser foot (1) Push down the lifter lever ⑤ to make the height from the top of the stitch plate to the bottom of the presser foot to 7.0 mm (with spreader, needle distance 5.6 mm on VF2500).
6. Adjustments 6.5 Looper 6.5.1 Installing angle and height of looper Insert the looper ① into the looper holder ② fully and tighten the screw ③ securely. It makes the height and installing angle (3° ). ① ② ③ Fig. 6-12 6.5.2 Distance between looper and needle The distance “M” between the looper tip and the center of the right needle depends on the needle distance when the needles are at the lowest points and the looper ① is at the extreme right.
6. Adjustments 6.5.3 Using timing gauge 針 Ｃ Ｄ A timing gauge has the marks (A, B, C, D, E) for each needle distance (Table 8). ＡＥ Ｂ Move the looper at the extreme right. Keep fitting the right needle into the groove “V” corresponding needle distance, and fit the looper tip to the gauge. Then, tighten the screw ④ securely. (Fig. 6-13) 6.6 Height of needle bar Fig. 6-15 Check points: ◇ Needles should be inserted fully into the needle holes of the needle clamp and fixed securely.
6. Adjustments 6.7 Front-and-rear position of needle and looper 3-needle: ◇ When the looper tip ① meets the left needle ② , make the clearance between them to 0.2 - 0.3 mm. ◇ When the looper tip ① meets the middle needle ③ , make the clearance between them to 0.05 - 0.15 mm. ◇ When the looper tip ① meets the right needle ④ , they touch slightly by 0.2 mm. Make the clearance between them to 0 - 0.05 mm to push the needle guard(rear) to the right needle ④ .
6. Adjustments 6.8 Needle and needle guard 6.8.1 Needle guard(rear) Height: Align the line “a” on the needle guard(rear) ① with the center of the needle eye at the lowest point. ① a Front-and-rear position: When the looper tip meets the center of the right needle, make the clearance between them to 0 - 0.05 mm to push the needle guard(rear) to the right needle. Make the clearance between the left needle and the needle guard(rear) to 0.05 - 0.1 mm. Loosen the screws ②③ to adjust them. Fig.
6. Adjustments 6.9 Height of feed dog When the feed dogs are at highest points, their tops are parallel to the top of the stitch plate. Make the even height of the differential feed dog ① and the main feed dog ② , and the height from the top of the stitch plate to their tops to 1.0 - 1.2 mm. 6.10 Needle and spreader ② 1.0 - 1.2 ㎜ ① Fig. 6-26 6.10.1 Spreader Make the clearance between the left needle and the hook “a” to 0.5 - 0.8 mm when the spreader ③ moves from the right to the left.
6. Adjustments 6.10.2 Top cover thread guide Make the clearance between the bottom of the top cover thread guide ① and the top of the spreader ② to 0.5 mm. Tighten the screws ③ securely where the thread is hooked with the hook smoothly when the spreader ② comes at extreme right. 1.0 ㎜ ③ ① 0.5 ㎜ ④ ② Fig. 6-30 6.10.3 Top cover thread eyelet Make the clearance between the top of the top cover thread guide ① and the bottom of the top cover thread eyelet ④ to 1.
6. Adjustments 6.11 Folder (VF2403, 2503, 2404, 2504) Front-and-rear position Loosen the screws ② to set the folder ① near the presser foot and the stitch plate without touchng them. Right-and-left position Loosen the screws ② to set the folder to align the left end of a tape with the left needle depending on its specifications. left needle tape fabric Up-and-down position Fig. 6-32 Loosen the screw ③ to set the fabric slide plate ④ 1/3 up from the bottom of the folder exit.
6. Adjustments Before adjusting, ALWAYS turn the motor switch OFF and check that the motor has already stopped. 6.12 Metering device (VF2404, 2504) 6.12.1 Presser foot tape guide Set the presser foot tape guide ① depending on the needle distance and a part to be sewn on a tape. Loosen the screw ② to adjust it. ② ① Fig. 6-34 6.12.2 Setting tape guide (1) Set the tape guide bar(long) ③ to a low position enough for sewing. (2) Set the inside of the tape guide, c.
6. Adjustments Before adjusting, ALWAYS turn the motor switch OFF and check that the motor has already stopped. 6.12.3 Pressure of elastic feed roller ③ ② To adjust the pressure of an elastic tape with tension roller(small) ① , loosen the lock nut ② and turn the adjusting screw ③ . ● To increase the pressure, turn the adjusting screw ③ clockwise. ● To decrease the pressure, turn the adjusting screw ③ counterclockwise. Keep the pressure as low as possible.
7.
7. Specifications Model Description VF2404, VF2504 VF2530 High speed flat bed 2 or 3-needle interlock stitch High speed flat bed 3-needle interlock stitch machine with metering device (clutch) machine Dimensions 500 (L）× 250 (W）× 430 (H）mm Weight 42.5 kg Stitch Type ISO 406, 407, 602, 605 Application Attaching tape Plain seam and covering During intermittent operation During intermittent operation Max. 5000 sti/min Max. 5500 sti/min Sewing Speed 41 kg 1.4 - 3.
4-4-12, NISHI T ENM A , K I T A - K U , O S A K A , J A P A N T E L：81- 6 - 6 3 6 4 - 5 6 21 F A X：81- 6 - 6 3 6 5 - 718 5 〒５３０-００４７ 大 阪 市 北 区 西 天 満 4 丁 目 4 番 12 号 TEL（ ０ ６） ６ ３６ ４-５６ ２１（ 代 ）FAX（ ０ ６） ６ ３６ ５- ７１８ ５ P/N 9720028( Ｉ ) No.7 Edited in 2010.2 （VF2400) Printed in Japan 2010.2.
