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JP-7854998-B2 - Apparatus and method for handling cardboard reels

JP7854998B2JP 7854998 B2JP7854998 B2JP 7854998B2JP-7854998-B2

Inventors

  • ペリーニ、ファビオ

Assignees

  • フューチュラ エス ピー エー

Dates

Publication Date
20260507
Application Date
20211209
Priority Date
20201214

Claims (12)

  1. A device for handling a cardboard reel, including a main body (8) equipped with a rod (45), - A first unit comprising two axially opposing plates (91, 92), each comprising radially expandable members (913, 923), spaced apart by a predetermined value along the axial direction (A9) of the rod (45) to form a pressurizable space (S) between the plates, wherein the upper and lower boundaries of the space (S) are defined by the opposing surfaces (912, 922) of the plates (91, 92); - Means for controlling the radial expansion of the members (913, 923); and - Pressurizing means for pressurizing the space (S); A device characterized by being provided with
  2. - A second unit positioned above the first unit, having a predetermined number of jaw members (100) that can be radially removed and retracted; and - Means for moving the jaw members (100) radially; The apparatus according to claim 1, characterized by including the following:
  3. The apparatus according to claim 1, characterized by including a suction cup (300) connected to a corresponding pneumatic suction device (302).
  4. Each of the plates (91, 92) is composed of movable flanges (912, 922) and fixed flanges (911, 921) arranged on the rod (45) such that the movable flanges (912, 922) face each other to form the pressurizable space (S), The apparatus according to claim 1, wherein an elastic gasket that stretches radially when compressed is present between the fixed flange and the movable flange of each plate, and the movable flange of each plate is positioned on the rod (45) such that it moves pneumatically toward its respective fixed flange, thereby crushing or compressing its respective elastic gasket.
  5. The apparatus according to claim 4, characterized in that the pneumatic movement of the movable flanges (912, 922) is controlled by introducing compressed air into a first duct (4) having an outlet corresponding to the movable flanges.
  6. The apparatus according to claim 1, characterized in that the pressurization of the space (S) between the plates (91, 92) is achieved by the second duct (5).
  7. The pressurization of the space (S) between the plates (91, 92) is achieved by the second duct (5), The apparatus according to claim 5, characterized in that the first and second ducts (4, 5) are coaxial with each other, and the second duct (5) is located outside the first duct (4) and forms the rod (45).
  8. The apparatus according to claim 2, characterized in that the jaw member (100) is composed of an elastic member (106) and a lever controlled by a pneumatic piston (107).
  9. A method for handling cardboard reels, comprising at least one tube forming machine (3) and a corresponding unwinding machine (30), wherein the tube forming machine (3) receives cardboard pieces unwinded from reels (1) located on the unwinding machine (30), thereby preparing a stack (2) of cardboard reels (1) at a parking point (P) of a cardboard tube manufacturing site, Each reel (1) has a central tubular core (1C), A method characterized by further including the following operating steps: - Inserting two plates (91, 92) into the central tubular core (1C) of the upper reel of the stack (2), spaced apart by a predetermined value (k) along a predetermined axial direction (A9), and each plate having a radially expandable member (913, 923), to form a pressurizable space (S) at the interface between the reel and the reel located below the stack (2), the pressurizable space (S) being formed by the opposing surfaces (912, 922) of the plates; and - Pressurizing the space (S) to determine whether to remove the reel from the lower reel.
  10. The method according to 9, further comprising the step of engaging the reel (1) removed from the lower reel, following the pressurization of the space (S).
  11. The method according to 10, characterized in that the reel (1) removed from the lower reel is engaged with each of the central tubular cores (1C).
  12. The method according to 10, characterized in that the reel (1) removed from the lower reel is engaged with its upper surface (10).

Description

The present invention relates to an apparatus and method for handling cardboard reels, particularly cardboard reels used in feeders for manufacturing cardboard tubes, and especially cardboard rolls having an internal tubular core. For example, the production of logs of paper material from which toilet paper rolls or kitchen paper rolls are obtained is known to involve feeding a paper web formed by one or more overlapping plies along a predetermined path along which various operations are performed before proceeding to log formation, and these operations include lateral pre-cuts of the web to form pre-cut lines that subdivide the web into tearable, separable sheets. Log formation typically involves the use of a cardboard tube, commonly called a "core," on which a predetermined amount of adhesive is distributed to its surface to allow the paper web on the core to adhere to a log-making machine, commonly known as a "rewinding machine." When the number of sheets wound around the core reaches a predetermined number, the last sheet of the completed log is separated from the first sheet of the subsequent log by, for example, a jet of compressed air directed towards a corresponding pre-cut line. At this point, the log is removed from the rewinding machine. Patent Document 1 describes a rewinding machine operating according to the above method. The logs thus produced are then transported to a buffer supplying one or more cutting machines that cut the logs transversely to obtain rolls of a desired length. Tubular cores are manufactured by machines commonly known as "tube forming" machines, configured to wind one or more cardboard webs around a mandrel that forms a spiral winding. Examples of such tube forming machines are described in Patent Documents 2 and 3. The reels from which the cardboard web is unwound are loaded onto a special unwinding machine that supports the reels themselves during the manufacturing of the tubes, using a lifting device controlled by an operator. For this purpose, these reels are stacked on pallets and placed in a parking station, from which they must be removed one at a time to be transported to the tube unwinding machine. A frequent problem arises from the fact that the stacked reels tend to stick together at the interface of their respective bases, which is related to the fact that individual reels may not be able to be completely separated from each other during the manufacturing stage. Therefore, the operator positioned to pick up the reels is often forced to apply mechanical action to the reels to facilitate removal and thereby ease of picking them up. This wastes time and poses a safety risk to the operator. EP 1700805EP 3099481EP 3212391 B This is a simplified diagram showing possible arrangements of tube shapes and associated unwinding machines in a station for manufacturing cardboard tubes.This is a simplified diagram of possible other arrangements of tube shapes and associated unwinding machines in a station for manufacturing cardboard tubes.This is a simplified diagram of a possible alternative arrangement of tube shapes and associated unwinding machines in a station for manufacturing cardboard tubes.This is an explanatory diagram showing the operational configuration of a device for handling cardboard reels according to possible embodiments.This is an explanatory diagram showing other operational configurations of a device for handling cardboard reels according to possible embodiments.This is an explanatory diagram showing another operational configuration of a device for handling cardboard reels according to a possible embodiment.This is a simplified block diagram relating to a possible configuration of a system for controlling the movable parts of the apparatus according to the present invention.This is an explanatory diagram showing details of Figure 3.This is another explanatory diagram showing details of Figure 3.This is an enlarged detail view of Figure 3, showing the structure of the plates (91, 92) and the pressurizable space (S).To better highlight the duct (420), Figure 9 is an enlarged detail view of Figure 3 showing the same component shown in Figure 9 according to a different cross-sectional plane.This is a perspective view illustrating the apparatus according to the present invention.This is a side view illustrating the apparatus according to the present invention.This is a schematic diagram of the device according to the present invention, attached to an operating arm (200).This is an explanatory diagram illustrating a further embodiment of the present invention. Transforming to its essential structure and referring to the figures in the attached drawings, the apparatus (D) according to the present invention is configured to operate on individual reels (1) from a stack (2) of reels located in a parking station (P). The parking station (P) is engaged with one or more tube forming machines (3) that use reels (1) to manufacture cardboard tubes. Each reel (1) is for