Patent ID: 6832538
Filing Date: 2004-12-21
Classification: B26D,B26F,Y10T

Abstract:
A foam cutting apparatus with a vertical blade strip (90â€²) and a horizontal blade strip (90), comprising:an apparatus body (10) having a working surface (11) linearly and reciprocally movable back and forth for moving a work piece placed thereon; and a frame (20) bridging over the apparatus body (10), the frame having two substantially upright columns defining first and second sides (101, 102) of the frame (20) and two transverse beams defining third and fourth sides (103, 104) of the frame (20), the two transverse beams connected between the two upright columns to define a substantially rectangular winding space for accommodating a vertical cutting device (17) and a horizontal cutting device (16); the horizontal cutting device (16) comprising: a first guide rail (21) disposed on the first side (101) of the frame (20), a first linear slide bar (22a) disposed on the first side (101) of the frame (20) and substantially parallel to the first guide rail (21), a second linear slide bar (22b) disposed on the second side (102) of the frame (20), a third linear slide bar (22c) disposed on the second side (102) of the frame (20) and spaced from and substantially parallel to the second linear slide bar (22b), a first blade turning unit (32a) movably engaged with the guide rail (21) and the first linear slide bar (22a), the first blade turning unit (32a) having a first blade seat (33a) mounting a first blade holder (51a), the first blade holder (51a) holding the horizontal blade strip (90) and defining one end of a working section (X) of the horizontal blade strip (90), wherein the first blade turning unit (32a) is capable of turning the working section (X) of the horizontal blade strip at a deflection angle when cutting an irregular or curved shape; a second blade turning unit (32b) movably engaged with the second linear slide bar (22b), the second blade turning unit (32b) having a second blade seat (33b) mounting a second blade holder (51b), the second blade holder (51b) holding the horizontal blade strip (90) and defining the other end of the working section (X) of the horizontal blade strip (90), wherein the second blade turning unit is capable of turning the working section (X) of the horizontal blade strip along with the first blade turning unit (32a); a first wheel set (40) including a first driving wheel (41) disposed near a corner between the second side (102) and the fourth side (104) of the frame (20), a first pulley (43) movably engaged with the first linear slide bar (22a), a second pulley (47) spaced from and independently mounted with respect to the second blade turning unit (32b) and movably engaged with the third linear slide bar (22c), and first and second guide wheels (44, 45) separately disposed adjacent to the first and second sides (101, 102) near the third side (103) of the frame (20), wherein the wheel set (40) is used for winding the horizontal blade strip (90) in a closed loop with a fixed length, and the first wheel set further includes a third guide wheel (46) disposed near the first driving wheel (41) for keeping the loop in tension, and wherein the first pulley (43) is connected to the first blade turning unit (32a) for moving the first blade turning unit (32a) along the guide rail (21) when the first pulley (43) is moved along the first linear slide bar (22a); and a first transmission mechanism (23, 24) operatively connected to the first and second pulleys (43, 47) and to the second blade turning unit (32b) for simultaneously moving the first and second pulleys (43, 47) and the second blade turning unit (32b), respectively, along the first, third and second linear slide bars (22a, 22c, 22b) so as to move the working section (X) up and down while maintaining the working section (X) substantially parallel to the working surface (11); and the vertical cutting device (17) comprising: a second guide rail (21â€²) disposed on the fourth side (104) of the frame (20), a fourth linear slide bar (22â€²a) disposed on the fourth side (104) of the frame (20) and substantially parallel to the second guide rail (21â€²), a fifth linear slide bar (22â€²b) disposed on the third side (103) of the frame (20), a sixth linear slide bar (22â€²c) disposed on the third side (103) of the frame (20) and spaced from and substantially parallel to the fifth linear slide bar (22â€²b), a third blade turning unit (32â€²a) movably engaged with the second guide rail (21â€²) and the fourth linear slide bar (22a), the third blade turning unit (32â€²a) having a third blade seat (33â€²a) mounting a third blade holder (51â€²a), the third blade holder (51â€²a) holding the vertical blade strip (90â€²) and defining one end of a working section (Y) of the vertical blade strip (90â€²), wherein the third blade turning unit (32â€²a) is capable of turning the working section (Y) of the vertical blade strip (90â€²) at a deflection angle when cutting an irregular or curved shape; a fourth blade turning unit (32â€²b) movably engaged with the fifth linear slide bar (22â€²b), the fourth blade turning unit (32â€²b) having a fourth blade seat (33â€²b) mounting a fourth blade holder (51â€²b), the fourth blade holder (51â€²b) holding the vertical blade strip (90â€²) and defining the other end of the working section (Y) of the vertical blade strip (90â€²), wherein the fourth blade turning unit (32â€²b) is capable of turning the working section (Y) of the vertical blade strip (90â€²) along with the third blade turning unit (32â€²a); a second wheel set (40â€²) including a second driving wheel (41â€²) disposed near a corner between the third side (103) and the first side (101) of the frame (20), a third pulley (43â€²) movably engaged with the fourth linear slide bar (22â€²a), a fourth pulley (47â€²) spaced from and independently mounted with respect to the fourth blade turning unit (32â€²b) and movably engaged with the sixth linear slide bar (22â€²c), fourth and fifth guide wheels (44â€², 45â€²) separately disposed adjacent to the fourth and third sides (104, 103) near the second side (102) of the frame (20), wherein the second wheel set (40â€²) is used for winding the vertical blade strip (90â€²) in a closed loop with a fixed length, and the second wheel set further includes a sixth guide wheel (46â€²) disposed near the second driving wheel (41â€²) for keeping the loop in tension, and wherein the fourth pulley (43â€²) is connected to the third blade turning unit (32â€²a) for moving the third blade turning unit (32â€²a) along the second guide rail (21â€²) when the fourth pulley (43â€²) is moved along the third linear slide bar (22â€²a); a second transmission mechanism (23â€², 24â€²) operatively connected to the fourth and fifth pulleys (43â€², 47â€²) and to the fourth blade turning unit (32â€²b) for simultaneously moving the fourth and fifth pulleys (43â€², 47â€²) and the fourth blade turning unit (32â€²b), respectively, along the fourth, sixth and fifth linear slide bars (22â€²a, 22â€²c, 22â€²b) so as to move the working section (Y) left and right while maintaining the working section (Y) substantially perpendicular to the working surface (11).