1181N - Machine à coudre industrielle JUKI - Free user manual and instructions

USER MANUAL 1181N JUKI

Read safety instructions carefully and understand them before using. Retain this Instruction Manual for future reference.

TO ENSURE SAFE USE OF YOUR SEWING MACHINE For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as

"machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there is always a possibility of unintentionally coming in contact with the moving parts. Operators who actually operate the machine and maintenance personnel who are involved in maintenance and repair of the machine are strongly recommended to carefully read to fully understand the following SAFETY PRECAUTIONS before using/maintaining the machine. The content of the SAFETY PRECAUTIONS includes items which are not contained in the speci¿cations of your product. The risk indications are classi¿ed into the following three different categories to help understand the meaning of the labels. Be sure to fully understand the following description and strictly observe the instructions.

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1. To avoid electrical shock hazards, neither open the cover of the electrical box for the motor nor touch the components mounted inside the electrical box. 1. To avoid personal injury, never operate the machine with any of the belt cover, finger guard or safety devices removed. 2. To prevent possible personal injuries caused by being caught in the machine, keep your fingers, head and clothes away from the handwheel, V belt and the motor while the machine is operation. In addition, place nothing around them. 3. To avoid personal injury, never put your hand under the needle when you turn “ON” the power switch or operate the machine. 4. To avoid personal injury, never put your fingers into the thread take-up cover while the machine is in operation. 5. The hook rotates at a high speed while the machine is in operation. To prevent possible injury to hands, be sure to keep your hands away from the vicinity of the hook during operation. In addition, be sure to turn OFF the power to the machine when replacing the bobbin. 6. To avoid possible personal injuries, be careful not to allow your fingers in the machine when tilting/raising the machine head. 7. To avoid possible accidents because of abrupt start of the machine, turn OFF the power to the machine when tilting the machine head or removing the belt cover and the V belt. 8. If your machine is equipped with a servo-motor, the motor does not produce noise while the machine is at rest. To avoid possible accidents due to abrupt start of the machine, be sure to turn OFF the power to the machine. 9. To avoid electrical shock hazards, never operate the sewing machine with the ground wire for the power supply removed. 10. To prevent possible accidents because of electric shock or damaged electrical component(s), turn OFF the power switch in prior to the connection/disconnection of the power plug. 11. Be sure to confirm that the machine head support bar is properly set in place before tilting the machine head. 12. This product is a precision instrument, and be very careful not to splash water or oil on it, or

To avoid malfunction and damage of the machine, confirm the following.

Before you put the machine into operation for the first time after the set-up, clean it thoroughly.

Remove all dust gathering during transportation and oil it well. Confirm that the power plug has been properly connected to the power supply. Confirm that the voltage has been properly set. Never use the machine in the state where the voltage type is different from the designated one.

• The direction of rotation of the sewing machine is counterclockwise as observed from the handwheel side.

Be careful not to rotate it in reverse direction. • For the first month, run the machine at a speed of 1,800sti/min or less.

DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY We hereby declare that the sewing machine (sewing head) described below ;

Description Function

Industrial Sewing Machine make stitches and sew

Applied harmonized standards, in particular :

EN ISO12100, EN ISO10821, EN 50581 Manufacturer : JUKI CORPORATION 2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan

1. Must not be put into service until the machinery to which it is incorporated has been declared in conformity with the provisions of the Directive 2006/42/EC, and

2. Conforms to the essential requirements of the Directive 2006/42/EC, described in the technical documentation, and 3. To be prepared with the above technical documentation compiled in accordance with part B of Annex VII, and 4. Also to conform to the RoHS Directive 2011/65/EU 5. Relevant information on which should be transmitted in response to a reasoned request by the national authorities, by the electronic method or other according to the request.

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1. SPECIFICATIONS Needle to be used

DP x17 (DB x 1 can be used.)

#14 - #23 (Standard #21)

For medium and heavy-weight materials

Stitch adjusting method

Lift of presser foot

Automatic lubrication

Thread take-up lever

Link-type thread take-up lever

400W clutch motor (4P)

JUKI Machine Oil No.7

Type of sewing machine head

1-Needle, Top and Bottom Feed

- Equivalent continuous emission sound pressure level (LpA) at the workstation :

A-weighted value of 80.0 dB; (Includes KpA = 2.5 dB); according to ISO 10821- C.6.2 -ISO 11204 GR2 at 2,000 sti/min. - Sound power level (LWA) ; A-weighted value of 85.0 dB; (Includes KWA = 2.5 dB); according to ISO 10821- C.6.2 -ISO 11204 GR2 at 2,000 sti/min.

#14 - #23 (Standard #21)

Sticheinstellmethode

JUKI Machine Oil No.7

(1) Installing the under cover

1) The under cover should rest on the four corners of the machine table groove. 2) Two rubber seats 1 for supporting the head portion on the operator side A are fixed on the extended portion of the table by hitting the nail 2 , and the other two rubber cushion seats 3 on the hinge side B are fixed by using a rubber-based adhesive. Then, oil pan 4 is placed. 3) Fit hinge 5 into the opening in the machine bed, and fit the machine head to table rubber hinge 6 before placing the machine head on cushions 7 on the four corners.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior. The machine is rotating athigt speed. To avoid possible personal injury, be very careful when adjusting the amount of oil.

(1) Information on lubrication

1) Fill oil pan 1 with JUKI Machine Oil No. 7 up to HIGH mark A. 2) When the oil level lowers below LOW mark B, refill the oil pan with the specified oil. 3) Apply an adequate amount of oil to the points marked with the arrows of the face plate components. (Be sure to apply an adequate amount of oil once a day.) Remove rubber plug 3 to lubricate the upper feed cam, and fill the felt portion in the figure with oil.

4) When you operate the machine after lubrication, you will see splashing oil through oil sight window

2 if the lubrication is adequate. 5) Note that the amount of the splashing oil is unrelated to the amount of the lubricating oil. When the sewing machine is used at low speed (1,000 sti/min or less), operate the sewing machine at 1,500 sti/min or more for approximately 10 minutes once a day in order to circulate the oil.

(2) Adjusting the amount of oil supplied to the face plate parts

1) Loosen setscrew 1 in the oil shield plate, and remove oil shield plate 2.

2) Adjust the amount of oil supplied to the thread take-up and needle bar crank 3 by turning adjust pin 4. 3) The adjust pin has been attached so that its engraved marker dot A is brought to the position as shown in the figure at the time of delivery. Turn the pin in direction B to increase the amount of oil, or in direction C to decrease it. The amount of oil is maximized by turning the pin in direction B by 90 degrees of an angle, or minimized by turning it in direction C by the same degrees of an angle. Adjust the pin position so that an adequate amount of oil is supplied. Amount of oil as shown in Fig.1 is the factory-adjusted amount of oil at the time of delivery. Check the amount of oil before using the sewing machine, and use the sewing machine after adjusting so that the amount of oil is adequate as shown in Fig.1.

4) Make the sewing machine run idle for approximately 30 seconds after adjusting the amount of oil with the adjust pin. Then, insert a sheet of paper for checking the amount of oil (oil spots) into location D to measure the amount of oil for

10 seconds. (The sewing speed during idling before the oil-amount measurement and during the measurement should be 2,000 sti/min.) – 11 –

(3) Adjusting the amount of oil in the hook

1) Turning the oil amount adjustment screw attached on the hook driving shaft front bushing in the “+” direction (in direction A) will increase the amount of oil (oil spots) in the hook, or in the “–” direction (in direction B) will decrease it. Adjust so that the amount of oil is adequate.

2) After the amount of oil in the hook has been properly adjusted with the oil amount adjustment screw, make the sewing machine run idle for approximately 30 seconds, and insert a sheet of paper for confirming the oil amount (oil spots) under the hook for 5 seconds to measure the amount of oil in the hook.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

The standard needle is a DB x 17 #21.

1) Turn the handwheel to move the needle bar up to its highest position. 2) Loosen needle clamping screw 2, and hold needle 1 so that long groove A in needle 1 faces exactly to the left. 3) Insert the needle into the needle bar until it will go no further. Securely tighten the needle clamping screw.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

6) もし B より糸が外れやすい場合は、以下の

いづれかの方法で対処してください。 ™ 糸立て腕 4 の糸穴に糸を一周巻く。 ™ B への糸通しの向きを変える。 1) Route the thread in the order of A, B, and C, and then wind it round the bobbin several times. 2) Set bobbin presser 1 down to make the winder come in contact with the belt. 3) Adjust adjustment screw 2 of the amount of bobbin thread to be wound round the bobbin so that the bobbin is wound with thread about 80%. Turn the adjustment screw 2 clockwise to increase the bobbin thread amount or counterclockwise to decrease it. 4) If thread is wound unevenly, move winder tension adjust base 3 to the right or left until it is correctly positioned. 5) The moment the bobbin has been wound up, the bobbin presser is released, and the bobbin winder will stop automatically. When making the sewing machine run idle, remove the bobbin case and the bobbin since there is the possibility that thread is entangled in the hook.

6) If thread is apt to come off from B, use either of the methods below to manage it.

™ Turn the thread once around the eyelet of thread stand arm 4. ™ Change the direction of thread passing to B. – 16 –

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

1) Removing the bobbin case

Raise the bobbin case latch to remove the bobbin case. 2) Threading the bobbin case 1. Pass the thread through threading slit 1 in the bobbin case, and route it under tension spring 2. 2. Hold the latch of the bobbin case, and set the bobbin case into the hook. Place the bobbin in the bobbin case taking care of the winding direction of the thread. (The bobbin should turn in the direction of arrow B when the thread is pulled in the direction of arrow A.)

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

Feed dog 3 is factory-adjusted to jut out 1.2 mm from the surface of throat plate 2.

When the feed dog height needs to be adjusted according to the sewing specifications or after the feed dog is replaced, do as follows : 1. Loosen screw 1. 2. Move the feed dog up or down to perform adjustment, then securely tighten the screw. * When sewing an extra heavy-weight material or the material which has many multi-layered parts, increasing the feed dog height is effective to help achieve consistent material feed. If puckering occurs when sewing a light-weight material, decreasing the feed dog height is effective to help prevent it. When increasing the feed dog height, take care not to allow the feed dog to come in contact with the throat plate.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

Turn stitch length adjustment dial 1 to bring the desired value at the top so that the desired value meets the pin.

[Reverse feed stitching] Push reverse feed lever 2 down. The machine performs reverse feed stitching as long as the lever is held depressed. Release the lever, and the machine will immediately resume the forward stitching mode.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

1) Positioning the needle bar.

Tighten needle bar connection screw 2 in needle bar connection 3 so that the marker line of the needle bar aligns with the bottom end of needle bar lower bushing 1 at the lowest position of the needle bar. (Fourth line A from the bottom for a DB x 1, second line B from the bottom for DP x 17) After the height of the needle bar has been properly adjusted, check that the needle bar does not come in contact with the walking foot.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

(1) Adjusting the longitudinal position of the walking foot

1) Maximize the stitch length, and turn the handwheel until walking foot 1 reaches its front end position. Now, loosen screw 2 in the center shaft bell crank. 2) Bring the walking foot as close to presser foot 3 as possible to the extent that it does not come in contact with the rear face of presser foot.Securely tighten screw 2 in the center shaft bell crank. 1. If the multi-layered part of the material cannot be fed smoothly, the longitudinal position of the presser foot should be adjusted with the stitch pitch remained as it is. In the case you want to change stitch pitch after having adjusted the longitudinal position of the presser foot with the stitch pitch which is not the maximum one, check to be sure that the presser foot does not come in contact with the walking foot. 2. When you tighten center shaft bell crank clamping screw 2 after the adjustment, take care to remove a backlash in the center shaft. If the center shaft has a backlash, the related components may wear out earlier than their life or may break.

(2) Ratio between alternating vertical motions of the presser foot and walking foot

The standard ratio between the alternating vertical motions of the presser foot and walking foot is 1:1 (equal amount of motion). Depending on the type of material to be sewn, however, the alternate motions of the walking foot and the presser foot may be changed. 1) Loosen screw 4. 2) Adjust the main shaft phase to the highest position of the thread take-up with the presser foot held lowered. 3) Move the walking foot rock shaft : To A → The vertical stroke of the presser foot will increase. To B → The vertical stroke of the presser foot will decrease. 1. In the case of sewing with the alternating vertical strokes nearly maximized, adjust the ratio between the alternating vertical motions of the presser foot and walking foot to 1:1. If the ratio is not 1:1, the relevant parts can interfere with each other to cause the sewing machine to lock. 2. When you tighten walking foot adjusting lever clamping screw 4 after the adjustment, take care to remove a backlash in the walking foot rock shaft. If the rock shaft has a backlash, the related components may wear out earlier than their life or may break.

(3) Alternate vertical motions of the walking foot and the presser foot

The standard amount of the alternating vertical motions is 2.5 mm. To improve sewing performance of the sewing machine for some types of sewing materials, however, it is better to change the amount of the alternating vertical motions of the presser foot and walking foot. 1) Adjust the main shaft phase to the highest position of the thread take-up. 2) Losen screw 5, and change the position of the cam rod boss. ™ UP position (A) / The amount of motion is large. (max. : approx. 5 mm) ™ DOWN position (B) / The amount of motion is small. (min. : approx. 2 mm) 1. When sewing is performed near the maximum alternate vertical amount, the sewing pitch may be uneven. In this case, lower the sewing speed for use. 2. When changing the alternate vertical amount and sewing thick sewing products, check that the needle bar does not come in contact with the walking foot.

(4) Adjusting the feeding amount of the walking foot

The ration of the bottom feed amount to the top feed amount is factory-adjusted to 1 : 1. If necessary, the top feed amount may be changed as follows : 1) Loosen nut 6, and move the slide block up or down. ™UP position (B) / top feed amount is small. ™DOWN position (A) / top feed amount is large.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

For standard adjustment, the top end of the needle eyelet aligns with throat plate surface 2 when needle

1 descends and also presser foot 3 descends, and when the presser foot aligns with throat plate surface 2. Follow the procedure described below to perform the standard adjustment. 1) Remove the rubber plug on the machine arm surface. 2) Loosen two setscrews 5 in top feed cam 4. 3) Turn the top feed cam until it reaches the position to allow the three components such as the throat plate surface, top end of needle eyelet and presser foot (pressing plane) to align, and fix the cam at that position. When fixing setscrews 5, be careful that the vertical driving cam does not slip in the lateral direction. (If it slips, sewing machine torque may occur.)

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior.

1) When sewing heavy-weight materials, move thread guide 1 in direction A to increase the length of thread pulled out by the thread take-up.

2) When sewing light-weight materials, move thread guide 1 in direction B to decrease the length of thread pulled out by the thread take-up. 3) Normally, thread guide 1 is positioned in a way that marker line C is aligned with the center of the screw.

When tilting the sewing machine head, exercise added care not to allow any worker to be caught under the machine head so as to prevent personal injury.

Lever returning spring 1 is to be put in catching hole A of feed spring peg 2 (the state of the spring at the time of delivery).

To increase the returning force of the reverse feed lever, put lever returning spring 1 in catching hole B of feed spring peg 2. * In the case the spring is put in B, the revere feed lever will not move smoothly. Put the spring in A or B, whichever provides better workability.

1. Use an M-type V-belt.

2. Use a motor of 4P, 400W. 3. The relationship between the motor pulley/belt length and the sewing speed of the machine is shown in the table. Sewing speed 2,000 sti/min

Outside diameter of motor puley

1. The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outer diameter.

2. When using a single phase motor, use belts of 1 inch longer than those shown in the table. 3. When using a motor of 2P, use the motor pulley, the outer diameter of which is 50mm or less.

24. TROUBLES IN SEWING AND CORRECTIVE MEASURES Trouble

1 The machine head has not been properly threaded.

™ Refer to "10. Thread the machine heads".

2 The hook has scratches.

™ Remove the scratches on the hook point using a fine emery paper.

3 The timing between the needle and hook is too early or too late.

™ Refer to "17. Needle-to-hook relationship".

4 The clearance between the needle and the hook point is too large.

™ Refer to "17. Needle-to-hook relationship".

5 The pressure of the presser foot is too low.

™ Tighten the pressure regulator.

6 The needle number selected is improper.

™ Replace the needle with one which is one count thicker.

1 The hook has scratches.

™ Remove the scratches on the hook point using a fine emery paper.

2 The returning force of the thread take-up spring is insufficient.

™ Decrease the tension and increase the stroke of the thread take-up spring.

3 The timing between the needle and hook is too early or too late.

™ Refer to "17. Needle-to-hook relationship".

4 The needle thread tension is excessive.

™ Adjust the needle thread tension properly.

5 The needle comes in contact with the ™ Refer to "17. Needle-to-hook hook point. relationship".

6 The clearance between the needle and the hook point is too large.

™ Refer to "17. Needle-to-hook relationship".

7 Faulty adjustment of the needle thread take-up eyelet.

™ Refer to "21. Adjusting the thread take-up stroke".

8 The needle number selected is improper.

™ Replace the needle with one which is one count thicker.

™ Properly thread the bobbin case.

1 The thread has not been passed through the notch of the bobbin case (Isolated idling loops) tension spring.

2 he thread path is poorly finished.

™ Grind it using a fine emery paper or buff it up.

3 The bobbin does not rotate smoothly. ™ Replace the bobbin or the bobbin case.

4 he bobbin thread tension is too high. ™ Decrease the bobbin thread tension. 5 The bobbin thread tension is too low. ™ Increase the bobbin thread tension. 6 An untwisted synthtic thread is used. ™ Slightly lower the sewing speed. (1,800 sti/min) 7 The needle number selected is improper. 4. Faulty feed

™ Replace the needle with one which is one count thicker.

1 Faulty adjustment of the longitudinal ™ Refer to "18. Adjusting the walking position of the presser foot. foot and the presser foot".

(Multi-layered parts of the material cannot 2 Feed dog height is not enough. be fed smoothly / puckering)

3 Feed dog height is excessive.

™ Refer to "14. Height of the feed dog".

™ Refer to "14. Height of the feed dog".

SEWING MACHINERY BUSINESS UNIT