A packaging machine comprising a transversal sealing unit (20) of bags, substantially consisting of a plate support (21) which comprises a series of additional supports and kinematic organs for the horizontal and vertical activation of grippers (22, 23), one internal and the other external, for the
A packaging machine comprising a transversal sealing unit (20) of bags, substantially consisting of a plate support (21) which comprises a series of additional supports and kinematic organs for the horizontal and vertical activation of grippers (22, 23), one internal and the other external, for the sealing and cutting of each bag, said machine comprising motors (25, 26), mounted on a fixed support (24), which cause the vertical movement of a main carriage (29) and of a gripper carriage (30) by means respectively of a screw shaft (27) and a screw shaft (28), said main carriage (29) supporting two pairs of horizontal and sliding parallel arms (33, 34), the internal first of which control the horizontal movement of the internal grippers (22) and the second control the horizontal movement of the external grippers (23), while the vertical movement of the grippers to follow the moving bag is achieved by the vertical movement of the main carriage (29).
대표청구항▼
1. A packaging machine comprising: a transversal sealing unit of bags comprising:a plate support which comprises a series of additional supports and kinematic organs for horizontal and vertical activation of grippers, wherein one of the grippers is internal and another of the grippers is external, f
1. A packaging machine comprising: a transversal sealing unit of bags comprising:a plate support which comprises a series of additional supports and kinematic organs for horizontal and vertical activation of grippers, wherein one of the grippers is internal and another of the grippers is external, for the sealing and cutting of each bag, anda first and a second motor, respectively mounted on a fixed support, which cause vertical movement of a main carriage and of a gripper carriage,said main carriage supporting two pairs of horizontal and sliding parallel arms that control horizontal movement of the internal gripper and horizontal movement of the external gripper,wherein vertical movement of the grippers to follow movement of a bag is achieved by vertical movement of the main carriage,wherein the main carriage comprises a plate sliding on vertical guides,wherein the gripper carriage slides on a central vertical guide positioned on the main carriage,said main carriage being vertically movable by a screw activated by the first motor,wherein the gripper carriage is vertically moved by a screw activated by the second motor,wherein the plate support comprises a motor support comprising a horizontal plate on which said first and second motors are fixed, andwherein the motor support is also fitted to the two screws, which are kinematically connected to the main carriage and to the gripper carriage. 2. The machine of claim 1, wherein from the opposite side of the support plate two pairs of horizontal sliding parallel arms protrude, the internal first of which controls the horizontal movement of the internal gripper and the second of which controls the horizontal movement of the external gripper, so that the grippers can carry out the following movements: gripper opening;vertical following of the bag as the bag is being formed;gripper closing;sealing;cutting of the bag;opening and rising. 3. The machine of claim 2, wherein the two pairs of horizontal sliding parallel arms are kinematically connected to a plurality of levers and tie rods, positioned on the horizontal support of the carriage, and positioned on the horizontal shaft. 4. The machine of claim 3, wherein the internal horizontal arms are activated by a crank mechanism consisting of pairs of tie rods activated by respective pairs of levers, wherein the external horizontal arms are activated by pairs of tie rods activated by respective pairs of levers, the gripper activation unit being equipped at its center with a lever activated by a tie rod, which is hinged to the gripper carriage and is vertically activated by the screw activated by the second motor, the pulleys of the first and second motors being connected kinematically to pulleys of the screws by drive belts. 5. The machine of claim 4, wherein the opening-closing of the grippers takes place by setting different speeds for the screws activated by the first and second motors. 6. The machine of claim 1, wherein movements of the grippers are achieved by means of two scrolls activated by the two screws in turn rotated by means of the first and second motors. 7. The machine of claim 6, whereby when the two screws rotate at the same speed the main carriage moves vertically and the grippers remain at the same distance from each other, namely if the grippers are open the grippers remain open, and if the grippers are closed the grippers remain closed. 8. The machine of claim 7, wherein the opening and closing of the grippers takes place by setting different rotation speeds for the two screws, whereby, by combining the rotation speeds of the screws it is possible to obtain opening and closing movements of the grippers and rising and descending movements of the main carriage, which causes vertical movement of the grippers.
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이 특허에 인용된 특허 (26)
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