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2

3. Head of the sewing machine

3.1 Hook and the hook box

3.1.1 Description

The hook (1) is mounted on the shaft (2) and is driven by the

gear (3) from the shaft (4).

The  shaft  of  the  hook  (2)  is  mounted  on  the  top  in  a  sliding

bearing  and,  on  the  bottom,  in  a  needle  bearing.

The  hook  is  provided  with  a  lever  (6)  which  is  tilted  when

removing  the  bobbin  (7).  The  protecting  sheet  (8)  protects

against  the  collision  of  the  needle  with  the  hook  point.  The

bobbin  case  opener  (9)  is  driven  by  the  eccentric  (10)  on  the

shaft  (2).

The  lubricating  tube  (11),  on  which  a  lubricating  wick  is

fastened  in  the  tube  (12),  feeds  oil  for  lubricating  the  sliding

bearing  (5)  of  the  eccentric  (10)  and  the  hook  path.

The screws (13) serve for taking up the clearance of the gear.

The  screws  (14)  fasten  the  hook  box  to  the  bedplate.

The lubricating felt (15) is connected by the wick (16) with the

main  lubricating  system  and  serves  for  lubricating  the  gear

(3).

3.1.2 Height  setting  of  the  hook

The  designated  distance  „A“  should  be  5.3  mm.

Caution!  Danger  of  injury!

Switch  off  the  main  switch  !  Before  starting  the

setting  operation,  wait  until  the  motor  stops!

- Remove  the  slide  plate  (1).

- Loosen  both  screws  (2).

- By turning the screws (3 and 4), set the required distance„A“.

For setting up use the setting gauge (7) as per the repective

figure.

  After  having  set  it,  tighten  carefully  the  screws.

- By axial shifting of the gear wheel (5), set the axial clearance

in  such  a  way  that  this  clearance  is  the  least  possible,  but

sufficient  for  turning  easily  the  hook.

- Tighten  carefully  the  screws  (2).  Caution  !  One  of  these

screws  must  bear  on  the  flat  of  the  shaft  6).

3.1.3 Setting  the  distance  of  the  hook  from

the  needle

The  hook  point  (1)  is  set  up  to  the  maximum  distance  of

0.1  mm  from  the  bottom  of  the  needle  recess  (2).  For  the

sewing  categories  1  and  2,  the  needle  size  100  is  set,  for  the

sewing  categories  3  and  4,  it  is  the  needle  size  160.

Caution!  Danger  of  injury!

Switch  off  the  main  switch  !  Before  starting  the

setting  operation,  wait  until  the  motor  stops!

- Shift  the  plate  (3).

- Loosen  only  one  screw  (4).

- Loosen  the  screws  (5)  and  tighten  them  only  slightly.

- Shift  the  hook  box  (6)  at  the  determined  distance  between

the  needle  and  the  hook  point.

- Tighten  the  screw  (4).

- Tighten  duly  the  screws  (5).

- Check  up  the  setting  with  magnifying  glass  and  proceed  to

the  eventual  correction  of  setting.

Caution!

When  changing  substantially  the  sewing  catego-

ry,  the  protecting    sheet  of  the  hook    (7)    should

be  set up.

1

7

max. 0,1

2

1

3

15

4

5

9

7

8

6

11

12

14

10

16

13

2

14

3

4

6

3

5

4

4

5

5

2

6

A

7

www.promelectroavtomat.ru

Содержание 1130i-5

Страница 1: ...1130i 5 Minerva Boskovice a s Sokolsk 60 CZ 680 17 Boskovice Tel 420 516 453434 453433 494111 Fax 420 516 452165 http www minerva boskovice com Edition 08 2006 Printed in Czech Republic S735 000706 w...

Страница 2: ...ion of main and auxiliary tensioners 3 4 3 Setting the tensioning mechanism of the main tensioners 3 4 4 Setting the adapting spring 3 4 5 Setting the thread limiter 3 5 Feeding mechanism of the booto...

Страница 3: ...ing of the electromagnets 5 Lifting the presser foot by electromagnet 21 5 1 Description 5 2 Setting the electromagnet pin 5 3 Setting the electromagnet current 5 4 Assembly of the top roller lifting...

Страница 4: ...dangerous situations In industrial sewing machines attention should be paid to the following still remaining possible sources of injury 1 Moving sewing needle risk of injury when sewing with raised pr...

Страница 5: ...the screws 3 and 4 set the required distance A For setting up use the setting gauge 7 as per the repective figure After having set it tighten carefully the screws By axial shifting of the gear wheel 5...

Страница 6: ...river into the hole of the screw 3 and using the regulating screw set up the required clearance between the needle 2 and the protecting sheet 1 When turning to the right the protecting sheet shifts ou...

Страница 7: ...ty of the screw 5 at the moment when the hook point comes to lie opposite the needle 4 The wheel 2 is to be set with its gear rim symmetrically to the centre of the gear wheel 1 The clearance between...

Страница 8: ...nnecting rod 10 of the needle bar 11 on the loop 12 is mounted in a ball bearing and it is slidingly mounted on the needle bar carrier The mechanism is lubricated by means of a central wick lubricatin...

Страница 9: ...e starting the setting operation wait until the motor stops Loosen the screw 1 of the pin 2 Loosen the screw 3 of the guide pin 4 In shifting the pin 2 set the needle bar holder so that the needle is...

Страница 10: ...thread tensioner plate 7 whose displacement motion relieves the thread tensioner springs 8 In machines provided with a thread trimming device the main tensioners 1 are relieved as well upon the switch...

Страница 11: ...t surface 8 of the lever At the maximum lift of the top roller the roller 5 moves on the flat surface 9 of the lever 7 in this condition there must be a minimal play at the tensioner plate lift when p...

Страница 12: ...1 Description The bottom feed is formed by two independent mechanisms necessary for attaining an elliptical way of the feeder The feeding mechanism for the horizontal component of the feeder movement...

Страница 13: ...n for setting the leverage in such a way so that the levers 10 of the mechanism pass in the spots of the recesses in the shaft Tighten the gripping joints of the levers 6 and 7 Test the sufficient cle...

Страница 14: ...After having loosened the screw 4 of the lever 5 in turning the eccentrric 6 we can change the height of the feeder above the throat plate After having loosened the screw 7 of the lever 8 inturning th...

Страница 15: ...ger of injury Switch off the main switch Before starting the setting operation wait until the motor stops Set the zero stitch screw in the knob 9 to the bottom of the cam 1 Set the angle 0 on the hand...

Страница 16: ...y the screws 5 Turn the knob in the counterclockwise direction up to the stop when the pin 6 of the knob 1 bears on the pin 7 from the other side In a sewing test check up the length of the stitch if...

Страница 17: ...nd set the lever so that it bears against the throat plate 4 Tighten the screw 3 Setting of the presser force of the presser foot In screwing in the screw 5 the pressing force is increased and inverse...

Страница 18: ...ing function of the cam on the winders shaft is interrupted and it moves in the sense of the arrow A fine setting is to be done on an incorporated condition in the machine Using the screw 2 the positi...

Страница 19: ...e contrary The value of the tensioning moment is very sensible to the turning of the nut 5 When setting it it is necessary to proceed very carefully set it up only in emergency cases Check the moment...

Страница 20: ...ff the main switch Before starting the setting operation wait until the motor stops The belt is correctly tensioned when the opposite sides of the belt approach one to another by up to 20 mm in applyi...

Страница 21: ...When putting the machine into operation each mechanism of the machine is to be lubricated with several drops of oil Oil is only refilled thereafter into the oil reservoirs using an oil can into the ho...

Страница 22: ...the bracket 5 and at the same time the shaft 2 up to the stop against the shaft 3 With the holder 1 held on the stop shift the shaft 2 in such a way that there appears the gap A 0 2 to 0 4 mm and tigh...

Страница 23: ...ain switch Before starting the setting operation wait until the motor stops Loosen the screws 4 and 5 Turn the moving trimming knife 1 in the sense of the arrow and set it in height Tighten the screw...

Страница 24: ...ectromagnets The electromagnets of the trimming device and loosening of the tensioner must work in accordance with the diagram This is ensured by setting the stopmotor see the instructions for use of...

Страница 25: ...ing in forward and in rearward sense If this position is not correct the length of the stitch will be shortened in one or the other feed direction 6 2 Electromagnet height setting Caution Danger of in...

Страница 26: ...spots 4 backtacking electromagnet 5 trimming electromagnet 6 tensioner loosening electromagnet 7 presser foot lifting electromagnet 8 connector of push button connecting 9 connector of coupling the h...

Страница 27: ...t up to the heavy duty sewing The parameters of the respective sewing operation must be in accordance with the given machine setting which includes also the replacement of some components such as the...

Страница 28: ...ing device according to the paragraph 4 7 5 When changing markedly the sewing category together with a marked change of the needle number it is necessary to correct the setting of the distance of the...

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