machine basics

TAJIMA EMBROIDERY MACHINE

BASICS

Original Instructions O-EMB10-E (2009.10)

Foreword This manual aims at customers who use a TAJIMA embroidery machine for the first time, and it introduces basic handling of each part.

The customer who has already been an owner of TAJIMA embroidery machine is also requested to read this manual, understand the contents, and then use the machine.

The contents of this manual may contain discrepancies in detailed information when compared with the actual product you have purchased due to difference of target model or continued research and improvements. If you have question about the product you have purchased or the contents of this manual, please ask the distributor for information.

- Table of contents 1. Machine needle ............................................................ p.1 2. Rotary hook .................................................................. p.3 3. Under thread winder..................................................... p.5 4. Thread .......................................................................... p.6 5. Fabric stretching........................................................... p.7 6. Threading ..................................................................... p.8 7. Tension adjustment of thread....................................... p.9 8. Timing between needle and rotary hook .................... p.11 9. Presser foot ................................................................ p.11 10. Thread breakage detector .......................................... p.13 11. Middle thread guide with thread take-up spring ......... p.13 12. Upper thread lock ....................................................... p.13 13. Frame spec. of the machine....................................... p.14

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BASICS 1.BASICS

1. Machine needle Many manufacturers provide sewing machine needles. Needles that can be used for the TAJIMA embroidery machines have been developed as exclusive products for embroidery machines.

1-1. Name of each part [Front side]

[Opposite side]

1 1

2

2 3

1. Groove 2. Scarf 3. Needle eye 4. Shank 5. Taper 6. Blade

6 C 5

4 A

B

Needle size is based on the blade diameter (C).

Example (11: Japanese notation, 75: German notation)

Needles that can be used for the TAJIMA machines have shank diameter (A): 1.62 to 1.63 mm, butt to eye length (B): 33.8 to 33.9 mm.

1-2. Standard needle Our standard needles (needles to be equipped to the TAJIMA machine) are the following three types.

Name

DBxK5RG DBxK5Z1

Application

Needle size

Border frame, tubular goods frame, cap frame

Length of shank (Figure 4 above) 16 mm

11 (75)

DBxK5Z2

Cylindrical frame

13.5 mm

Characteristic

It has spherical tip and good durability.

It can be used for various purposes such as from thin to thick fabric, knit.

It is effective to prevent breakage of thread and needle.

Spherical shape

(Enlarged)

DBxK5RG: GROZ-BECKERT, DBxK5Z1/Z2: ORGAN Regarding other count numbers than 11 (75), please ask the distributor for information.

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BASICS 1-3. Relation between needle and thread The chart below indicates needles and adaptable thread sizes (rough standard).

Indication of thread count differs depending on country, area, or manufacturer. Denier (d) is used for explanation in this manual.

Thread

Needle size Number in ( ) is German notation

Cotton count

8 (60) / 9(65) / 10(70)

70 to 80

70 to 100

11(75) / 12(80)

50 to 60

100 to 130

13(85) / 14(90)

36 to 40

130 to 150

Silk (d/2)

Polyester (d/2)

*Cotton count number: Larger the value, the thinner is thread.

Rayon (d/2)

*Denier (d): Larger the value, the thicker is thread.

1-4. Change of needle Needle is consumable. Use of bent needle or tip-damaged needle will cause thread breakage and skip stitch. Change the needle when such troubles are distinguishing.

It is also necessary to change needle according to conditions such as thread to use, material, sewing method etc.

- Cross section There should be no gap.

Accessory

Needle clamp

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Groove should face the front.

Screw It is possible to detach needle by loosening the screw only lightly.

3

BASICS

2. Rotary hook 2-1. Name of each part In the state of bobbin case being set

1

2

3

4 1. Outer hook 2. Inner hook 3. Hook point 4. Lubricating hole 5. Hook rail

Bobbin case

5 4 About 5 cm

During stop of the machine

2-2. Bobbin Wind under thread to bobbin by using under thread winder (Refer to p.5).

[Winding amount of under thread]

Quantity of [1] is adequate. [2] or [3] will cause thread breakage, biting or bad finish of sewing.

[1]

[2]

[3]

Adequate amount

85 to 90% Overwound When you wind under thread to bobbin adequately, its length is as shown in the chart below (an example).

Bobbin for regular rotary hook

Bobbin for jumbo rotary hook

80 m

125 m

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BASICS 2-3. Bobbin case 2

1

5 3 About 5 cm Name

4

1 Thread guide coil 2 Latch 3 Adjusting screw 4 Slit 5 Spring edge

[1] Set bobbin to bobbin case.

[2]

Put thread into the slit.

Pay attention to direction of bobbin

[3]

Lead thread to the spring edge.

[4]

Wind thread to the thread guide coil.

Enlarged

[5] Adjust p.9).

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the tension (Refer to

5

BASICS

3. Under thread winder

! CAUTION

!

1

Power switch

2

Cover *Some type has no cover.

Lubricate the wick (7). Neglect will cause the parts to be burnt out.

3

3

Thread guide system

4

Tension set

5

Thread winding section

8

Power supply spec.: 100 V, or 220 to 230 V

7

6

2 9

4

10

5 1

6 Start lever 7 Wick (*) 8 Micro switch 9 Bobbin 10 Detecting lever

lubricate to the wick, use the accessory * To machine. Neglect will cause sticking.

TF oil of the Tension knob Perform adjustment so that light thread tension applies.

Procedure

4

(a) Pass thread to the tension set (4). (b) Wind thread to bobbin by two or three turns (9). (c) Push down the start lever (6).

Winding starts.

When thread winding is completed, the start lever will return to the original position automatically.

9 6

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BASICS

4. Thread [Difference between sewing thread and embroidery thread] Sewing thread (three-piece twist) Its purpose is to sew fabric together and needs enough strength.

Embroidery thread (two-piece twist) It is frequently used for decoration. It needs softness to emphasize brilliance even if it overlaps.

3-piece twist

2-piece twist

4-1. Upper thread Use left-twisted (Z-twisted) upper thread that fits to rotating direction of rotary hook (counterclockwise).

When catching thread in both hands and turning thread to the direction indicated by arrow, it is “left-twisted” if twisting of thread returns. When thread twisting becomes stronger, it is “right-twisted”.

4-2. Under thread Cotton thread or polyester spun thread is popular (differs depending on application). If you do not use the same thread as upper thread, select thin thread count as much as possible (the back of fabric will be finished softly).

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An example of sample

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BASICS

5. Fabric stretching Fix the fabric in the state of full stretch so that no lines remain on the fabric.

Clip

For multi head machine When you attach frame holder or square frame, detach the border frame sash (1).

1

The number of clips and their length differ depending on frame size. Perform equal arrangement by using all clips.

How to fit in clip

Push it down by thumb.

Bad example Fix

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BASICS

6. Threading !

! CAUTION When you step on the table to perform working, perform the working near the spot where the table support is set as close as possible (only the model in which table supports are packed together).

Table support

Spiral tube Threader (accessory)

Threader (accessory)

If thread does not pass to each section correctly, it is not possible to make normal stitching (not possible to embroider). In addition, thread breakage sensor will malfunction to stop the machine. (Code Nos.291, 293 etc. will occur).

How to use adjusting lever 1. To raise the lever

2

1

3

2. To pass thread

3. To return it to the original position

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BASICS

7. Tension adjustment of thread To make finishing of embroidery beautiful or to perform efficient works by reducing thread breakage, it is important to get adequate tension of upper/under thread. Please perform adequate tension adjustment that is suitable to fabric or type of thread to use, conditions etc.

7-1. Under thread tension (a) When not using a measuring gauge When you shake the bobbin case (3) up and down lightly in the state of under thread (1 in the figure) not hooked to the thread guide coil (2), standard tension (20 to 35 g) makes the bobbin case (3) descend slowly.

[When adjusting] Loosening the adjusting screw (4) will make tension looser. Tightening it will make tension tighter.

1 3

4

2 Use a small flat head screw driver.

(b) When using a measuring gauge Introduced hereunder are gauges to measure tension of upper/under thread. Please make good use of them (sold separately).

UTG (Upper/under thread tension measuring gauge)

BTG (Under thread tension measuring gauge)

Used for both jumbo rotary hook and regular rotary hook

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BASICS 7-2. Upper thread tension Adjust tension with thread apart from the thread presser 2 (illustration A below).

a. Remove entangling of thread at the first tension (1). It is all

In the state of upper thread entangled

right that only light tension is applied here.

b. Perform adjustment at the second tension (3) while pulling out thread so that tension becomes 100 to 130 g.

- Standard value Type of thread

Tension value

Rayon 120 (d/2)

110 to 130 (g)

Polyester 120 (d/2)

100 to 110 (g)

1 To tighten

3 To loosen

3

2 (Tension value) Graduation

Measuring gauge (UTG)

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Detach the thread presser (2) by finger.

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BASICS

8. Timing between needle and rotary hook The timing (timing between needle and rotary hook) when the needle (1) meets the hook point (2) of rotary hook is very important.

When the needle (1) moves up, the loop (4) generated under the fabric (3) affects finishing of sewing. Loop shape is changed by “Fast”/“Late” timing between needle and rotary hook.

The description below only shows the relation between a needle and a rotary hook. This does not mean recommendation of adjustment of timing between needle and rotary hook.

3 4 1

[Timing: 198°]

2

1 Small looping is apt to generate skip stitches.

Moving up quantity: small Fast

2

Main shaft angle 200° (standard value)

3 4

Main shaft angle shows timing between needle and rotary hook.

Adjustable range: 198 to 204° (standard value: 200°) Main shaft angle

Late

[Timing: 204°]

2 1 Large looping is not apt to generate skip stitches.

Moving up quantity: large

9. Presser foot When height of the presser foot (2) against the fabric (1) is improper, a gap will occur between the fabric (1) and the needle plate (3). That will cause thread breakage, skip stitch, or bad thread tension. It is necessary to adjust height of presser foot according to fabric thickness.

Value at shipment from the factory 0.8 mm

2

Good example Presser foot should press the fabric at needle sticking.

1

3

Bad example

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BASICS [How to adjust]

a. Turn OFF the power. After setting needle position to the first needle, rotate the main shaft counterclockwise (correct rotation) by using the T-wrench (1). Set main shaft angle to 178째 while checking descending of the needle bar.

b. Loosen the screw (2) to detach the cover (3) (figure b below). c. Loosen the screw (4), and tighten the screw (4) with the presser foot (5) touching fabric (urethane (6) in this example) lightly.

Adjust the second needle and after by the same manner (figure c below).

d. After adjusting of one head, check if height of presser foot is almost the same at any needle bar visually (broken line part in the figure d below).

3

[a]

[b] 2 2

1

Main shaft angle 178째

4 [c]

[d]

5

6

Enlarged

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BASICS

10. Thread breakage detector The rotary slit (1) detects flow of upper thread/under thread.

When thread breakage occurs, the machine will stop at once.

It is possible to change sensitivity of thread breakage detection on the operation panel.

For details, read “USER’S MANUAL”.

1

11. Middle thread guide with thread take-up spring The thread take-up spring (2) keeps balance of upper thread/ under thread constantly at high-speed rotation, which makes finishing of sewing stable.

Set it to the “basic position” usually. When you move the lever (3) (two or three steps), finishing of sewing will change (perform adjustment according to need).

2 3

2

Basic position

3

12. Upper thread lock (Not applied to some models) Upper thread will be locked (fixed)/released according to operational condition of the machine. Changing this timing will improve finishing of sewing.

It is possible to change upper thread lock timing on the operation panel. For details, please read “USER’S MANUAL”.

Fix

Release

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BASICS

13. Frame spec. of the machine indicates the inside of border frame, suspended head.

indicates an X-axis embroidery space and

indicates a

[ S (single) spec. ] It is a standard frame spec.

6

5

6

4

5

[ W (double) spec. ]

3

4

2

3

1

2

1

*There are also 2W and 3W spec.

Activating odd-numbered heads only will cause embroidery space to become as large as two heads.

6

5

4

5

3

2

3

1

1

[ WE spec. ] This spec. performs embroidery to W space by activating all heads (embroidery space is for two heads). *X-axis embroidery space is added by one head (illustration A below).

5

4

3

A

5

1

1

2

3

4

2

[ WJ spec. ] The machine will perform embroidery to a space as large as one head or two heads by grouping two heads. *The illustration below is an example when using the WJ-spec frame. Other usage of the frame according to application is also available. For details, please ask the distributor for information.

6

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5

4

3

2

1

5

5

3

3

1

1

6

6

4

4

2

2

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BASICS

2nd Edition

November, 1998

3rd Edition

February, 1999

4th Edition

June, 1999

5th Edition

May, 2001

6th Edition

March, 2003

7th Edition

May, 2003

8th Edition

April, 2004

9th Edition

March, 2009

Manufactured by: Tokai Industrial Sewing Machine Co., Ltd. NO.1800, Ushiyama-cho, Kasugai, Aichi-pref., 486-0901, Japan Telephone:568-33-1161 Fax:568-33-1191

Distributed by: Tajima Industries Ltd. 19-22, Shirakabe, 3-chome, Higashi-ku, Nagoya, 461-0011, Japan Telephone:52-932-3444 Fax:52-932-2457

Authorized Distributor:

zCopy, reprint, or reform of a part or whole of this manual without permission is prohibited. zCopy, reprint, or reform of a part or whole of this manual without permission is prohibited.