Object of Bale Opener Machine | Function of Bale Opener Machine

Bale Opener Machine:
Bale Opener Machine is the first major machine in blowroom line for ring spinning.
Bale Opener Machine
Bale Opener Machine
Object :
  1. To open the tuft of cotton.
  2. To mix & blend the fiber.
  3. To remove a considerable amount of trash from fiber which is taken out by fan.
  4. To act as a reserver box for the next machine.
Function of Bale Opener Machine:
  • Regulating motion by swing paddle.
  • Air suctioning.
  • Beating action.
  • Spiked lattice action.
Main Parts :
  1. Feed lattice.
  2. Bottom lattice.
  3. Spiked lattice.
  4. Wiper roller.
  5. Evener roller.
  6. Breaker roller.
  7. Grid bar.
Main setting point :
  1. Grid bar to grid bar = 0.75``
  2. Beater grid to grid bar = 2``
  3. Spike to spike = 2.5``
Specification :
  • Motor r.p.m = 1440
  • Motor pulley dia (A) = 3.5``
  • M/C pulley dia (B) = 15.5``
  • Beater shaft pulley (C) = 6``
  • Beater shaft pulley (to wiper) dia (L) = 9``
  • Beater shaft pulley (to evener) dia (J) = 8``
  • Beater shaft pulley (to fan) dia (N) = 16``
  • Evener pulley dia (K) = 10``
  • Wiper pulley dia (M) = 6``
  • Suction fan pulley dia (D) = 5.75``
  • Feed lattice pulley dia (I) = 18``
  • Bottom lattice pulley dia (O) = 18``
  • Inclined lattice pulley (to beater pulley) dia = 12``
  • Inclined lattice pulley (to bottom lattice) dia = 4``
  • Inclined spike lattice carrier pulley dia, D2 = 6`5``
D3 = 8``
D4 = 9.5``
  • Spiked lattice carrier pinion teeth, D1 = 24``
  • Spiked lattice wheel teeth = 72
  • Spiked lattice pulley (to feed lattice) (H) = 8``
Calculation :

1. Feed lattice r.p.m
= 1440*(3.5``/15.5``)*(6``/12``)*(6.5``/9.5``)*(24/72)*(4/18)*(18/8)*(8/16)*(18/10)
= 16.68

2. Bottom lattice r.p.m = 1440*(3.5``/15.5``)*(6``/12``)*(6.5``/9.5``)*(24/72)*(4/18)
= 8.24

3. Inclined spiked lattice r.p.m = 1440*(3.5``/15.5``)*(6``/12``)*(6.5``/9.5``)*(24/72)
= 37.07

4. Wiper roller r.p.m = 1440*(3.5``/15.5``)*(9``/6``) = 487.73

5. Evener roller r.p.m = 1440*(3.5``/15.5``)*(8``/10) = 260.12

6. Beater r.p.m = 1440*(3.5``/15.5``) = 325.15

7. Suction fan r.p.m = 1440*(3.5``/15.5``)*(16``/5.75``) = 904.78

Conclusion :
The hopper bale opener is the first m/c in blow room section. It is important because cotton is in bale from open first to produce yarn and if not open, it is difficult to get fine yarn. The m/c that we observed was not running due to the construction of the shed, and electricity was not supplied; therefore we could not observe the working procedure of the m/c. But it helps to change our theoretical knowledge in practical basis.

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