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KR-20260063788-A - Cutting Ro1ler for Rotary Die Cutter

KR20260063788AKR 20260063788 AKR20260063788 AKR 20260063788AKR-20260063788-A

Abstract

The device comprises a roller body (11) and a cutting die (20) coupled to the roller body (11) so that when the corrugated cardboard is cut, the cut portion on the inner side of the knife can be reliably separated from the remaining portion on the outer side of the knife. The above cutting die (20) comprises a base (22) coupled to the outer surface of the roller body (11), a knife (24) supported by the base (22) and formed in a shape corresponding to a pattern to be formed on the corrugated cardboard (2) to cut the corrugated cardboard (2) in a certain pattern, and a sheet push part (30) that applies a pushing force to the cut portion (2B) so that the cut portion (2B) of the corrugated cardboard (2) is separated from the remaining portion (2A) of the corrugated cardboard (2) when the corrugated cardboard (2) is cut. This provides a cutting roller for a rotary die cutting device.

Inventors

  • 이상규

Assignees

  • 이상규

Dates

Publication Date
20260507
Application Date
20241031

Claims (8)

  1. A cutting roller (10) comprising a roller body (11) and a cutting die (20) coupled to the roller body (11), The above cutting die (20) is, A base (22) coupled to the outer surface of the roller body (11), and A knife (24) supported on the base (22), having a blade (25) formed at its tip, and formed in a shape corresponding to a pattern to be formed on the corrugated cardboard (2) to cut the corrugated cardboard (2) in a certain pattern, and A cutting roller for a rotary die cutting device comprising a sheet pusher (30) that applies a pushing force to the cut portion (2B) of the corrugated cardboard (2) so that the cut portion (2B) of the corrugated cardboard (2) is separated from the remaining portion (2A) of the corrugated cardboard (2) when the corrugated cardboard (2) is cut.
  2. In claim 1, The above seat push part (30) is, A fixing hole (32) formed by penetrating the inner portion of the base (22) where the knife (24) is supported, and A bottom plate (40) that is inserted and fixed inside the above-mentioned fixing hole (32), and A push head (50) installed inside the tip side of the knife (24), which moves backward when the front side of the corrugated cardboard (2) is cut and the severed part (2B) of the corrugated cardboard (2) is located inside the tip side of the knife (22), and An elastic member (60) installed between the bottom plate (40) and the push head (50) and applying a pushing force to the push head (50) when the push head (50) moves backward, and A cutting roller for a rotary die cutting device comprising an auxiliary elastic member (70) having elasticity and supported by the bottom plate (40) or the push head (50), and applying a pushing force to the push head (50) together with the elastic member (60) when the push head (50) is retracted a certain distance.
  3. In claim 2, The above elastic member (60) is, A cutting roller for a rotary die cutting device, characterized by being formed of a conical compression coil spring, with a front end having a small outer diameter fixed to a push head (50) and a rear end having a large outer diameter fixed to the bottom plate (40).
  4. In claim 3, The above push head (50) is, A cylindrical holder (54) is provided on the rear side, into which the front end of the elastic member (60) is inserted and a binder (56) is filled. A cutting roller for a rotary die cutting device, characterized in that the front end of the elastic member (60) is joined to the holder (54) as the binder (56) filled inside the holder (54) hardens.
  5. In claim 4, A cutting roller for a rotary die cutting device, characterized in that the holder (54) is inserted into the interior of the fixing hole (32) when the push head (50) retracts.
  6. In claim 2, The above push head (50) is, A cutting roller for a rotary die cutting device characterized by having a cushion layer (52) made of rubber or sponge in the front part.
  7. In claim 2, The above base (22) is, It is installed having a curved plate shape and the inner surface is in contact with the outer surface of the roller body (11), and The above bottom plate (40) is, A cutting roller for a rotary die cutting device formed to have a thickness thinner than the base (22) and installed to be fixed at the end portion of the fixing hole (32) on the inner surface side of the base (22).
  8. In claim 2, A cutting roller for a rotary die cutting device, characterized in that the auxiliary elastic member (70) is made of conical rubber and its bottom surface is fixed to the bottom plate (40).

Description

Cutting Roller for Rotary Die Cutter The present invention relates to a cutting roller for a rotary die cutting device, and more specifically, to a cutting roller for a rotary die cutting device configured to more reliably separate the severed portion of the corrugated cardboard from the remaining portion when the corrugated cardboard is cut by a cutting roller to form holes for handles or ventilation during the packaging box manufacturing process. Generally, packing a certain amount of goods into a box is called box packaging. Boxes used for box packaging are manufactured from materials such as styrofoam, synthetic resin, wood, paper, cardboard, and corrugated cardboard. Among the various boxes used for packaging, many made of cardboard and corrugated cardboard are folding boxes. Folding boxes are shipped by the manufacturer in a folded state and form their shape when used. Folding boxes, such as corrugated cardboard boxes, are manufactured by forming holes such as handles or ventilation holes in a predetermined shape through cutting during the manufacturing process. At this time, the hole portion is cut using a cutting roller equipped with a knife on the outer surface. Here, the cutting roller is installed to be in contact with the support roller in the middle of the conveying path of the corrugated cardboard continuously supplied from the supply section, and at the same speed as the conveying speed of the corrugated cardboard. It forms holes of a predetermined shape in the corrugated cardboard while rotating rapidly. By using a rotating cutting roller, there is no need to stop the corrugated cardboard transport, which can improve work speed. A rotary die cutting device including such cutting rollers and supporting rollers that support them can be equipped with knives of various shapes, such as cylindrical shapes, depending on the shape of the hole. In conventional rotary die cutting devices, the cutting rollers do not separate well from the part to be cut on the inside of the knife and a portion remains attached to the remaining part on the outside of the knife. Therefore, since the parts to be cut are separated one by one using human labor, it leads to reduced productivity and labor shortages, causes defects in the cutting surface, reduces the preservation of the corrugation of the corrugated cardboard when cutting, and accelerates the wear rate of the knife. In addition, the cutting roller of a conventional rotary die cutting device is configured to use a sponge, rubber, or cork attached to the inside of the knife to separate the part to be cut inside the knife from the remaining part outside the knife. However, this configuration has low elasticity and makes it difficult to rapidly undergo elastic deformation and recovery in accordance with the cutting speed. Consequently, it is difficult to separate the part to be cut inside the knife from the remaining part in accordance with the fast cutting speed, and the durability is weak, and the corrugations of the corrugated cardboard may be damaged as the remaining part around the part to be cut is pressed. FIG. 1 is a perspective view showing a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view of a die cutter of a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 3 is an exploded perspective view showing a cutting die of a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 4 is a cross-sectional view showing a cutting die of a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 5 is another cross-sectional view showing a cutting die of a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 6 is a cross-sectional view showing the state in which a corrugated cardboard is cut by a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 7 is a partially enlarged cross-sectional view showing the state in which a corrugated cardboard is cut by a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 8 is a perspective view showing the back side of a push head in a sheet push portion of a cutting roller for a rotary die cutting device according to an embodiment of the present invention. FIG. 9 is a side view showing a compression coil spring in the seat push portion of a cutting roller for a rotary die cutting device according to an embodiment of the present invention. Next, a preferred embodiment of a cutting roller for a rotary die cutting device according to the present invention will be described in detail with reference to the drawings. In the following, the same reference numerals are used for technical elements that perform the same function, and repeated detaile