Back to results
US 2012/0238422 A1Published application
Knife folding machine
AssigneeHorizon International Inc.
InventorsShinya Watanabe, Tatsuaki Ida, Tsuyoshi Matsumoto, Takehito Yokogi
Life of this patent
Estimating the term…
Abstract
In the knife folding machine of the present invention it is possible to easily adjust the stroke of the reciprocal movement of the knife blade 5. The rod 10 is reciprocated by the feed screw 12. The feed screw 12 is rotated by the servomotor 14. Thus when the knife blade 5 reciprocates between the first and second positions, the first and second positions thereof are separately adjusted by controlling the amount of the rotation of the servomotor 14.
Claims5
A knife folding machine, comprising:
- a frame (1) having a support surface (4) to support a lower surface of a sheet or a sheet bundle (S);
- a positioning means attached to the frame (1) to position the sheet or the sheet bundle (S) at a fold position on the support surface (4);
- a knife blade (5);
- a pair of folding rollers (6a, 6b) opposed to the knife blade (5) with the support surface (4) therebetween at the fold position, the folding rollers (6a, 6b) being attached to the frame (1), the knife blade (5) and the folding rollers (6a, 6b) being disposed in parallel to each other, an edge of the knife blade (5) being opposed to a gap between the folding rollers (6a, 6b), the support surface (4) having a opening (3) through which the knife blade (5) passes;
- a knife drive unit (7) for reciprocating the knife blade (5) in a direction perpendicular to the support surface (4) through the opening (3) between a first position and a second position, the first position being opposed to the folding rollers (6a, 6b) with the support surface (4) therebetween and spaced from the support surface (4), the second position being disposed adjacent the gap between the folding rollers (6a, 6b);
- a support arm (8) attached to the frame (1) to support the knife drive unit (7);
- and
- a control unit (22) for controlling the knife drive unit (7);
- wherein
- the reciprocal movement of the knife blade (5) between the first and second positions effects a folding operation, wherein
- while the knife blade (5) moves from the first position to the second position, the sheet or the sheet bundle (S) on the support surface (4) being folded in two by the knife blade (5), an edge of the folded portion thereof being pushed out of the opening (3) and inserted to the gap between the folding rollers (6a, 6b) so that the sheet or the sheet bundle (S) can be folded by the folding rollers (6a, 6b);
- and wherein
- the knife drive unit (7) comprises:
- a holder (9) attached to the support arm (8);
- a rod (10) extending in a direction perpendicular to the support surface (4) and attached to the holder (9) to reciprocate in an axial direction thereof, the rod (10) having one end attached to the knife blade (5);
- a block (11) attached to a center portion of the rod (10);
- a feed screw (12) extending in parallel to the rod (10) and attached to the holder (9) to rotate around an axis thereof, the block (11) having a thorough hole which has thread grooves corresponding to the feed screw (12), the feed screw (12) engaging with the through hole, the rod (10) being reciprocated by the rotation of the feed screw (12);
- a first pulley (13) attached to an upper or lower end of the feed screw (12);
- a servomotor (14) attached to the holder (9) and having a drive shaft (14a), the drive shaft (14a) extending in parallel to the feed screw (12);
- a second pulley (15) attached to the drive shaft (14a) of the servomotor (14);
- and
- a timing belt (16) extended between the first and second pulleys (13, 15), the servomotor (14) being controlled by the control unit (22).
19 more elements
Dependencies are inferred from the claim text.