Patent EP0179520A1 successfully refreshed from Google Patents.
EP0179520A1
Expired / Lapsed
EP
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Automatic taping unit with improved system of withdrawal of the tape applying rollers for carton sealing machines
Assignee: Individual
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Filing: 1985-10-08
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Granted: —
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Expires: 2005-10-08
Abstract
Abstract An inlet applying roller (3) and an outlet applying roller (15) are elastically urged to project, at rest. from a casing (1) which may be fixed to a sealing machine. The inlet applying roller (3) is rotatably supported by support arms (6), which are movable along path defined by shaped windows (21) engaged with a fixed pivot (22), and the outlet applying roller (15) is rotatably supported by lever arms (13) rotatable about a fixed fulcrum (16). Said support arms (6) for the inlet and outlet rollers (3, 15) are kinematically connected to the support lever arms (13) of the outlet roller (15) so that the withdrawal movement of the inlet roller (3) is accompanied by a simultaneous withdrawal movement of the outlet roller (15) and the successive coming-out movement of the inlet roller (3) is made dependent on a simultaneous coming-out movement of the outlet roller (15). A cutting blade (37) is arranged between said rollers (3, 15) to cut the tape between subsequent cartons.
Inventors
- 👤 Augusto Marchetti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:56
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/04; B65B51/06; B65B51/067
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
293 words
Automatic taping unit for carton sealing machines, comprising a casing (1) adapted to be fixed to a sealing machine along the carton advancement path, an inlet applying roller (3) and an outlet applying roller (15) elastically urged to project from said casing (1) to be engaged and forced to return into said casing (1) by the front of an advancing carton, an adhesive tape supply (51, 55-58) arranged to put, at rest, a free end of the tape (48) in contact with said inlet roller (3) in order to be engaged and adhesively drawn forward by the carton front and further realized in such a way as to allow subsequently said tape (48) to follow the drawing of said free end and to slide on said inlet roller (3) to extend adhesively along the adjacent horizontal wall of the carton, and a cutting blade (37) arranged between said inlet and outlet rollers (3, 15) and provided with actuating means (32, 34, 38) capable of causing it to return into the outline of said casing (1) before being reached by the carton front and to project from said outline for cutting the tape between said inlet and outlet rollers after having been overcome by the rear wall of the carton and before said horizontal wall of the carton abandons said outlet roller (15), characterized in that said inlet applying roller (3) is supported by a pair of movable support arms (6) with the withdrawal movement guided by shaped windows (21) engaged with a fixed pivot (22), said windows (21) having a lower end portion (23) very inclined with respect to a horizontal plane, an extended intermediate portion (24) less inclined with respect to a horizontal plane and an almost vertical upper end portion (25).
Claim 2
Dependent Claim
293 words
Automatic taping unit for carton sealing machines, comprising a casing (1) adapted to be fixed to a sealing machine along the carton advancement path, an inlet applying roller (3) and an outlet applying roller (15) elastically urged to project from said casing (1) to be engaged and forced to return into said casing (1) by the front of an advancing carton, an adhesive tape supply (51, 55-58) arranged to put, at rest, a free end of the tape (48) in contact with said inlet roller (3) in order to be engaged and adhesively drawn forward by the carton front and further realized in such a way as to allow subsequently said tape (48) to follow the drawing of said free end and to slide on said inlet roller (3) to extend adhesively along the adjacent horizontal wall of the carton, and a cutting blade (37) arranged between said inlet and outlet rollers (3, 15) and provided with actuating means (32, 34, 38) capable of causing it to return into the outline of said casing (1) before being reached by the carton front and to project from said outline for cutting the tape between said inlet and outlet rollers after having been overcome by the rear wall of the carton and before said horizontal wall of the carton abandons said outlet roller (15), characterized in that said inlet applying roller (3) is supported by a pair of movable support arms (6) with the withdrawal movement guided by shaped windows (21) engaged with a fixed pivot (22), said windows (21) having a lower end portion (23) very inclined with respect to a horizontal plane, an extended intermediate portion (24) less inclined with respect to a horizontal plane and an almost vertical upper end portion (25).
Claim 3
Dependent Claim
134 words
Taping unit according to claim 1, characterized in that said pair of support arms (6) for the inlet applying roller (3) is kinematically connected to a pair of support lever arms (13) for the outlet applying roller (15), so that the withdrawal movement of the inlet applying roller (3) under the thrust of the advancing carton and with the guide of said shaped windows (21) is accompanied by a simultaneous withdrawal movement of the outlet applying roller (15) through rotation of said pair of lever arms (13) about a fixed fulcrum (16) and the successive coming-out movement of the inlet applying roller (3) for its return to the projected position is made dependent on a simultaneous coming-out movement of the outlet applying roller (15) after its abandonment by said horizontal wall of the carton.
Claim 4
Dependent Claim
34 words
Taping unit according to claim 2, characterized in that the position of said fixed fulcrum (16) is chosen so as to give said outlet applying roller (15) a coming-out rotation with predominant horizontal component.
Claim 5
Dependent Claim
80 words
Taping unit according to claim 2, characterized in that the kinematic connection between said support arms (6) for the inlet applying roller (3) and said support lever arms (13) for the outlet applying roller (15) is made through a pair T-shaped levers (8) having a fixed fulcrum (9), one end rotatably connected to an adjacent end of said support arms (6) and another end provided with a slidable pivot (10) engaged in rectilinear windows (12) of said lever arms (13).
Claim 6
Dependent Claim
105 words
Taping unit according to claim 1, characterized in that said adhesive tape supply (51, 55-58) includes, upstream of said inlet applying roller (3), a succession of tape guide and tensioning rollers (55-58), at least one (55) of which is carried by movable support means associated to said blade actuating means (32, 34, 38) in such a way as to cause tensioning of the adhesive tape when the cutting blade (37) returns into the casing outline and to cause loosening of the tape tension when said actuating means (32, 34, 38) control the subsequent coming out of the cutting blade (37) for cutting the adhesive tape.
Claim 7
Dependent Claim
68 words
Taping unit according to claim 5, characterized in that said blade actuating means (32, 34, 38) include a pair of levers (32) engaged by the carton after the withdrawal of the inlet roller (3) into the casing outline and abandoned by the same carton before the abandonment of said outlet roller (15), said pair of levers (32) being said movable support means for said one guide roller (55).
Claim 8
Dependent Claim
47 words
Taping unit according to claim 5, characterized in that said succession of guide rollers (55-58) includes, downstream of said one guide roller (55), a further guide roller (56) positioned in such a way as to be progressively approached by said inlet.applying roller (3) during its withdrawal movement.
Claim 9
Dependent Claim
18 words
Taping unit according to claim 7, characterized in that said further guide roller (56) is of unidirectional type.
Claim 10
Dependent Claim
63 words
Taping unit according to claim 7, characterized in that said further guide roller (56) is rotatably mounted on a support pivot (60), which is in its turn provided with an eccentric pivot (61), there being provided means (66, 64) for changing the angular position of said support pivot (60) and of said further guide roller (56) with respect to said eccentric pivot (61).
Claim 11
Dependent Claim
38 words
Taping unit according to claim 9, characterized in that said means (63, 64) for changing the angular position comprise locking screws (63) for said support pivot (60) which are inserted in arcuate windows (64) of said casing (1).
References Cited (Backward Citations)
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