JPH0283203U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front explanatory view showing an embodiment of the present invention, Fig. 2 is an explanatory view taken from the -' arrow in Fig. 1, and Fig. 3 is an arrangement angle of the folding roll group of the present invention (coil contact Fig. 4 is an elevational view conceptually showing a conventional peripheral paper folding device. 1: Inner circumferential folding device, 2: Base, 3: Air cylinder, 4: Roll support, 5, 6, 7, 8, 9
: Folding roll, 5c, 6c, 7c, 8c, 9c
, : Folding roll rotation axis, 10: Presser roll, 1
1: Lifting device, C: Coil, A ₁ , A ₂ , A ₃ ,
_A4 , _A5 : Contact point of folding roll to coil, P
: Packaging material, B ₁ , B ₂ , B ₃ , B ₄ , B ₅ : Inner peripheral surface of the coil at the contact point of the folding roll, Po: Edge fold, R: Cradle roll, α ₁ , α ₂ , α ₃ , α
₄ , _α5 : Contact angle (arrangement angle) of the coil on the folding roll.

Claims (1)

[Scope of utility model registration request] In an apparatus for folding a wrapping material that covers the outer periphery of a coil and folds the end face of the coil into the inner periphery of the coil, a plurality of folding rolls are arranged on the side end side of the rotatably supported coil. A supporting body is provided so as to be movable back and forth, so that the folding roll can freely come into contact with the coil side end, and when each folding roll comes into contact with the coil side end, the rotating shaft of each folding roll and the coil at the corresponding contact position The folding rolls are arranged so that the rotation axis direction of each folding roll is oriented in a different direction by a predetermined angle, so that the angle α between the folding roll and the inner circumferential surface gradually decreases from the upstream first roll to the downstream end roll. A device for folding the inner circumference of packaging materials.