JP6214689B2 - Rotary die cutter - Google Patents

Description

  The present invention relates to a rotary die cutter used for processing a sheet-like material.

  A rotary die cutter is widely used to perform processing such as punching and cutting on a sheet-like material such as a corrugated cardboard sheet. A general rotary die cutter includes a die cylinder and an anvil cylinder which are arranged one above the other and have rotation axes parallel to each other. The die cylinder is provided with a blade member, and the anvil cylinder is formed of urethane, for example, and an anvil into which the blade tip of the blade member bites is wound. The die cylinder and the anvil cylinder are rotationally driven so that their rotational directions are opposite to each other, and the sheet-like material inserted between these cylinders is punched or cut by a blade member while proceeding in the conveying direction. (See Patent Document 1).

  Generally, the blade member of the die cylinder is fixed to an arcuately curved plate that is detachably attached to the die cylinder. The plate member is provided with an elastic member in the vicinity of the blade member. The elastic member is made of polyethylene, for example, and when the blade member punches or cuts the sheet material, the sheet material is sandwiched between the anvil and the sheet material is stabilized around the blade member. To work. When the blade member is used to punch out the sheet-like material and has a closed form, the elastic member is provided inside the blade member to push out the punching waste (Patent Document 2). reference).

  When the blade edge of the blade member and the anvil are worn, the pressure at which the blade member bites into the anvil decreases. In many rotary die cutters, in order to maintain this pressure at a predetermined value, the distance between the rotation axes of the die cylinder and the anvil cylinder or the relative position of these rotation axes can be adjusted (see Patent Document 3). .

JP-A-8-229885 JP 2004-130461 A JP 2011-110615 A

  During the rotation of the die cylinder and the anvil cylinder, the elastic member provided in the vicinity of the blade member by the plate material of the die cylinder is in a state other than the position where the blade member acts on the sheet-like material (and the position in the vicinity thereof) Sheet material cannot be sandwiched between anvils. For this reason, in the rotary die cutter, for example, an annular shape is provided along the circumferential direction of the die cylinder so that the conveyed sheet-like material is always sandwiched between the die cylinder and the anvil cylinder and stably conveyed. The spacer member has been wound. The spacer member is usually formed of an elastic material such as polyethylene, and a plurality of spacer members spaced apart in the longitudinal direction of the die cylinder are arranged in the rotary die cutter. By providing these spacer members, the sheet-like material passing between the die cylinder and the anvil cylinder is always sandwiched between the spacer member and the anvil, and the conveyance of the sheet-like material in the rotary die cutter is stable. Turn into.

  Normally, a rotary die cutter is used for processing a plurality of types of sheet-like materials, and the thicknesses of these sheet-like materials are not the same. Therefore, when the thickness of the sheet-like material to be processed is changed, it is necessary to replace the spacer member of the rotary die cutter with one having a thickness corresponding to the changed thickness of the sheet-like material. For example, the thickness of the corrugated cardboard sheet includes types such as A flute (about 5 mm), B flute (about 3 mm), and E flute (about 1.5 mm). In order for the rotary die cutter to correspond to the corrugated cardboard sheets of these flutes, a spacer member having a thickness corresponding to each flute is prepared in advance, and the spacer member is adjusted according to the thickness of the corrugated cardboard sheet to be processed. It is necessary to replace it.

  However, in general, a rotary die cutter is used for processing such as punching and cutting in a processing apparatus including a plurality of processing units connected in series to perform various processing on a sheet-like material into a desired shape or product. Used as one processing unit. The use of the spacer member according to the thickness of the sheet material as described above means that each time the thickness of the sheet material processed by the processing apparatus is changed, the rotary die cutter is connected to the processing unit adjacent to the rotary die cutter. Since the spacer member is replaced after being separated, there is a problem that the operation efficiency of the processing apparatus is lowered.

  Also, the distance between the rotation axis of the die cylinder and the anvil cylinder is changed according to the thickness of the cardboard sheet so that the cardboard sheet is sandwiched between the spacer member and the anvil (without changing the thickness of the spacer member) It is difficult to do this because a situation occurs in which the blade member does not bite into the anvil at an appropriate pressure.

  The present invention solves the above-described problem, and stably conveys and processes sheet-like materials having different thicknesses without exchanging members and parts according to the thickness of the sheet-like material. Provide a rotary die cutter that can

In the rotary die cutter of the present invention, a die cylinder and an anvil cylinder that rotate in opposite directions around rotation axes parallel to each other, and a shaft body of the die cylinder pass through, and are separated from each other in the rotation axis direction of the die cylinder. A rotary die cutter having a plurality of blade mounting portions arranged in such a manner that each blade mounting portion is configured to rotate together with a shaft body of the die cylinder around a rotation axis of the die cylinder. The one or more blade members and the shaft body of the die cylinder pass through the inside, and rotate around the second rotation axis parallel to the rotation axis of the die cylinder in the same direction as the die cylinder. An annular sheet feeding member configured, and a sheet-like material passing between the die cylinder and the anvil cylinder is provided with the sheet feeding member. Is conveyed pinched between the anvil wound around a member to the anvil cylinder, said sheet feeding member, a drive means for rotating at a second rotational axis of the sheet feeding member, the sheet feeding member Adjusting means for moving the second rotation shaft up and down.

  Further, in the rotary die cutter according to the present invention, each blade mounting portion includes an attachment member to which the sheet feeding member is attached, and the attachment member is a first annular ring arranged coaxially with the sheet feeding member. A portion of the die cylinder is disposed so as to pass through the inside of the first annular portion, and the adjusting means includes a first gear having external teeth, On one side, a second annular part having an inner circumference center different from the outer circumference center is provided outside the first annular part, and the first annular part and the A bearing may be interposed between the second annular portions, and a bearing center axis of the bearing may be eccentric with respect to a rotation axis of the die cylinder.

Further, in the rotary die cutter according to the present invention, the driving means includes a second gear fixed to the end of the first annular portion coaxially with the first annular portion, and external teeth of the second gear. And a third gear having external teeth may be provided.

  In the rotary die cutter of the present invention, each blade mounting portion may be configured to be movable independently of each other along the rotational axis direction of the die cylinder.

  In the rotary die cutter according to the present invention, a second mounting portion is provided between two adjacent mounting portions, and the second mounting portion is provided around the rotation axis of the die cylinder. One or more blade members configured to rotate with the shaft body may be provided.

A rotary die cutter according to the present invention includes a die cylinder and an anvil cylinder that rotate in directions opposite to each other around mutually parallel rotation axes, and a blade mounting portion through which a shaft body of the die cylinder passes. In the blade mounting portion, one or a plurality of blade members configured to rotate together with the shaft body of the die cylinder around the rotation axis of the die cylinder, and the shaft body of the die cylinder are disposed inside. An annular sheet feeding member configured to pass and rotate in the same direction as the die cylinder around a second rotation axis parallel to the rotation axis of the die cylinder, and The sheet material passing between the cylinder and the anvil cylinder is sandwiched between the sheet feeding member and the anvil wound around the anvil cylinder and conveyed. , Said sheet feeding member, a drive means for rotating at a second rotational axis of the sheet feeding member, and further comprising an adjusting means for moving the second axis of rotation of said sheet feeding member up and down.

  In the rotary die cutter of the present invention, an annular sheet feeding member is provided in the blade mounting portion, and the sheet feeding member is driven to rotate about a rotation axis parallel to the rotation axis of the die cylinder, and the rotation axis is It is configured to be movable up and down. Therefore, by adjusting the position of the rotation axis of the sheet feeding member according to the thickness of the sheet-like material processed by the rotary die cutter, the thickness can be obtained without replacing the rotary die cutter member and parts. Can be stably conveyed and processed with a rotary die cutter.

FIG. 1 is an explanatory diagram showing an outline of a corrugated sheet processing apparatus including a rotary die cutter according to an embodiment of the present invention. FIG. 2 is a front view of the rotary die cutter according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of the rotary die cutter according to the embodiment of the present invention, broken along the vertical plane including the line AA in FIG. FIG. 4 is a cross-sectional view of the rotary die cutter according to the embodiment of the present invention, broken along the vertical plane including the line BB in FIG. FIG. 5 is a cross-sectional view of the second blade mounting portion of the rotary die cutter according to the embodiment of the present invention, taken along the vertical plane including the line CC in FIG. FIG. 6 is a partial cross-sectional view showing one end of the rotary die cutter according to the embodiment of the present invention. 7 shows a vertical plane including the DD line in FIG. 4 (with the rotation axis of the sheet feeding member at the highest position) of the fifth blade mounting portion of the rotary die cutter according to the embodiment of the present invention. It is sectional drawing fractured | ruptured and taken along the arrow. FIG. 8 is an exploded perspective view of components of the fifth mounting portion of the rotary die cutter according to the embodiment of the present invention. FIG. 9 is an explanatory diagram showing the positional relationship of the components of the fifth mounting portion of the rotary die cutter according to the embodiment of the present invention in a state where the rotation axis of the sheet feeding member is at the highest position. FIG. 10 is an explanatory diagram showing the positional relationship of the components of the fifth mounting portion of the rotary die cutter according to the embodiment of the present invention in a state where the rotation axis of the sheet feeding member is at the intermediate position. FIG. 11 is an explanatory diagram showing the positional relationship of the components of the fifth mounting portion of the rotary die cutter according to the embodiment of the present invention in a state where the rotation axis of the sheet feeding member is at the lowest position. FIG. 12 is an explanatory diagram showing the positional relationship of the components of the fifth mounting portion of the rotary die cutter according to the embodiment of the present invention in a state where the rotation axis of the sheet feeding member is at the highest position. FIG. 13 is an explanatory diagram showing the configuration of the blade member of the rotary die cutter according to the embodiment of the present invention. 14A and 14B are explanatory views showing patterns in which a corrugated cardboard sheet is processed by the corrugated cardboard processing apparatus including the rotary die cutter according to the embodiment of the present invention. 15a to 15c are explanatory views showing patterns in which a corrugated board sheet is processed by the corrugated board processing apparatus including the rotary die cutter according to the embodiment of the present invention.

  Hereinafter, the present invention will be specifically described with reference to the drawings. FIG. 1 is an explanatory view showing an outline of a corrugated board processing apparatus according to an embodiment of the present invention. The corrugated cardboard processing apparatus is a form that can be assembled into a rectangular parallelepiped or a cubic box by punching, ruling, grooving, bending, etc., into a rectangular corrugated cardboard sheet S that is a kind of sheet-like material ( That is, the cardboard sheet S is processed into a folded cardboard box.

  The corrugated cardboard processing apparatus stacks the corrugated cardboard sheets S to be processed, and feeds the corrugated cardboard sheets S one by one, and a first printer that performs printing processing on the corrugated cardboard sheets S sent from the paper feed unit (1). (2) and a second printer (3). The corrugated cardboard sheet S printed by these printers (2) and (3) is cut or cut by a rotary die cutter (4). The corrugated cardboard sheet S processed by the rotary die cutter (4) is sent to the creaser (10) and subjected to ruled line processing. The corrugated cardboard sheet S processed by the creaser (10) is sent to the double slotter (11) and subjected to grooving. The corrugated cardboard sheet S processed by the double slotter (11) is processed into a form that can be assembled by the folder gluer (12), and is bound by a predetermined number of sheets by the counter ejector (13).

  In FIG. 1, the conveyance direction arrow PL of the corrugated cardboard sheet S from the paper feed unit (1) to the double slotter (11) is indicated. In this specification, the terms “upstream” and “downstream” may be used based on the conveying direction of the cardboard sheet S in order to refer to the positions and orientations of various components of the corrugated cardboard processing apparatus. For example, the creaser (10) is located on the downstream side of the rotary die cutter (4), and the rotary die cutter (4) is located on the upstream side of the creaser (10).

  In the paper feeding unit (1), the cardboard sheet S positioned at the lowermost layer of the cardboard sheet S placed is pushed downstream by a kicker (not shown). The extruded cardboard sheet S is fed between a pair of upper and lower feed rolls (14) and (15). The feed rolls (14) and (15) are rotated in the direction of the arrow shown in FIG. 1, and the cardboard sheet S placed between the feed rolls (14) and (15) is sent to the first printer (2). Sent.

  The first printer (2) includes a printing cylinder (21), a press cylinder (22) arranged below the printing cylinder (21), an inking roll (23) and a drawing roll (24) arranged above the printing cylinder (21). ). An ink reservoir is formed between the inking roll (23) and the squeeze roll (24), and the ink stored in the ink reservoir passes through the inking roll (23) to the surface of the printing cylinder (21). It adheres to a stamp (not shown) provided on the plate. The printing cylinder (21) and the press cylinder (22) rotate in the direction of the arrow shown in FIG. 1, and the cardboard sheet S passes between the printing cylinder (21) and the press cylinder (22). Is printed. Thereafter, the corrugated cardboard sheet S is fed between the feed rolls (25) and (26) of the first printer (2).

  The cardboard sheet S is fed from the feed rolls 25 and 26 of the first printer 2 to the second printer 3. Similar to the first printer (2), the second printer (3) includes a printing cylinder (31), a press cylinder (32), an inking roll (33), a squeeze roll (34), and a feed roll ( 35) and 36), but the color of the ink printed on the cardboard sheet S and the pattern of the printing plate of the printing cylinder 31 are different from those of the first printer 2.

  The corrugated cardboard sheet S coming out of the second printer (3) is sent to the rotary die cutter (4). The rotary die cutter (4) includes a die cylinder (41) provided with a plurality of blade members for cutting the corrugated cardboard sheet S, and an anvil cylinder disposed below the die cylinder (41) in parallel with the die cylinder (41). (42). The die cylinder (41) and the anvil cylinder (42) rotate in directions opposite to each other in the direction of the arrow shown in FIG. 1, and the corrugated cardboard sheet S passes between the die cylinder (41) and the anvil cylinder (42). The cardboard sheet S is cut or cut. It is sent to the creaser (10) through the feed rolls (43) and (44) of the rotary die cutter (4).

  The creaser (10) is provided with an anvil roll (101) and a ruled roll (102). Between the anvil roll (101) and the ruled roll (102) rotating in the direction of the arrow shown in FIG. As the cardboard sheet S passes, the corrugated sheet S is subjected to ruled lines. A plurality of ruled lines parallel to the conveying direction PL of the cardboard sheet S are engraved on the cardboard sheet S. Thereafter, the cardboard sheet S is sent to the double slotter (11) through the feed rolls (103) and (104) of the creaser (10).

  The double slotter (11) includes a pair of upper and lower first slotter rolls (111) and (112), a pair of upper and lower second slotter rolls (113) and (114) disposed downstream thereof, and a first slotter roll (111). ) (112) and feed rolls (115) (116) arranged between the first slotter rolls (113) (114). The first slotter roll (111) and the second slotter roll (113) arranged on the upper side are provided with groove cutting blades (not shown), and the first slotter roll (112) arranged on the lower side. The second slotter roll (114) is provided with a receiving blade (not shown) corresponding to the grooving blade. When the corrugated cardboard sheet S passes between the first slotter rolls 111 and 112 rotating in the direction of the arrow shown in FIG. 1, the upstream portion of the corrugated cardboard sheet S is grooved. Thereafter, the corrugated cardboard sheet S is sent to the second slotter rolls (113) and (114) through the feed rolls (115) and (116). When the corrugated sheet S passes between the second slotter rolls (113) and (114) rotating in the direction of the arrow shown in FIG.

  In addition to the transport mechanism for transporting the corrugated cardboard sheet S, the folder gluer (12) is connected to an adhesive margin (203) (see FIG. 15b) formed at one end of the corrugated cardboard sheet S sent from the double slotter (11). A gluing mechanism for gluing, a folding mechanism for folding the ball sheet S so that the gluing portion (203) is joined to the panel portion on the other end side of the corrugated cardboard sheet S (both not shown) are provided. . By being processed by the folder gluer (12), the corrugated cardboard sheet S is processed into a form that can be assembled into a box shape and sent to the counter ejector (13).

  The counter ejector (13) includes, for example, a hopper mechanism that stacks and stores the cardboard sheets S thrown from the counter ejector (13), and a conveyor mechanism that transports the cardboard sheets S stacked on the hopper mechanism when a predetermined number of sheets are reached. And a bundling mechanism (not shown) for bundling a predetermined number of cardboard sheets S carried out from the conveyor mechanism with a string. In the counter ejector (13), a predetermined number of corrugated cardboard sheets S processed into a form that can be assembled into a box shape are bundled to be ready for shipment.

  FIG. 2 is a front view of the rotary die cutter (4) according to the embodiment of the present invention as viewed from the upstream side. 3 is a cross-sectional view of the rotary die cutter (4) taken along the vertical plane including line AA in FIG. 4 is a cross-sectional view of the rotary die cutter (4) taken along the vertical plane including the line BB in FIG.

  The rotary die cutter (4) includes a U-shaped frame (45) erected on the floor FL. The die cylinder (41) is disposed horizontally so as to be orthogonal to the conveyance direction PL of the corrugated cardboard sheet S (that is, disposed along the machine width direction of the rotary die cutter (4)). ), And both ends thereof are fixed to the opposing vertical wall portions of the frame (45) via bearings.

  In the rotary die cutter (4), the first blade mounting portion (5a) to the fifth blade mounting portion (5e) are close to each other along the rotational axis G direction of the die cylinder (41) or the shaft body (46). It is provided freely. The shaft body (46) passes through the first blade mounting portion (5a) to the fifth blade mounting portion (5e). The first blade mounting portion (5a), the third blade mounting portion (5c), and the fifth blade mounting portion (5e) have the same structure (except for the configuration of the blade member to be mounted, as will be described later). The second blade mounting portion (5b) and the fourth blade mounting portion (5d) have the same structure. The second blade mounting portion (5b) is disposed between the first blade mounting portion (5a) and the third blade mounting portion (5c), and the fourth blade mounting portion (5d) is the third blade mounting portion (5c). ) And the fifth blade mounting portion (5e).

  On the upstream and downstream surfaces of the upper member of the frame (45), a pair of rail members (47) and (47) are arranged in parallel to the direction of the rotational axis G of the die cylinder (41). Each of the first blade mounting portion (5a) to the fifth blade mounting portion (5e) includes a first support plate (51) arranged along the vertical direction, and is located above the first support plate (51). A pair of LM blocks (52) (52) provided on the rail member (47) is fitted into the rail members (47) (47) so as to be slidable along the rail members (47) (47). Each first support plate (51) of the first blade mounting portion (5a) to the fifth blade mounting portion (5e) is provided with an opening through which the shaft body (46) is passed.

  A motor (53) is disposed on one main surface of the first support plate (51). A gear (54) coupled to the drive shaft of the motor (53) and a gear (55) meshing with the gear (54) are provided on the other main surface side of the first support plate (51). (See FIG. 8). The gear (55) is a ball screw that engages with a screw shaft (56) provided so as to penetrate the first support plate (51) of the first blade mounting portion (5a) to the fifth blade mounting portion (5e). Combined with (57). The screw shaft (56) is provided between the vertical portions of the frame (45) in parallel with the rotation axis G of the die cylinder (41), and the first blade mounting portion (5a) to the fifth blade mounting portion (5e). Each of the motors (53) rotates in the forward or reverse direction, so that the gear (55) and the ball screw (57) rotate in the rotational direction of the motor (53) and move along the screw shaft (56). As a result, each of the first blade mounting portion (5a) to the fifth blade mounting portion (5e) moves independently in the direction of the rotation axis G of the die cylinder (41) (right or left in FIG. 2). .

  The upper feed roll (43) of the rotary die cutter (4) is provided on the downstream side of the first support plate (51) of each of the first blade mounting portion (5a) to the fifth blade mounting portion (5e). (In other words, there are a total of five feed rolls (43) in this embodiment). These feed rolls (43) are formed in an annular shape, and are slidably inserted into a support shaft body (48) disposed parallel to the direction of the rotation axis G of the die cylinder (41). Further, the engaging member (58) provided on the downstream side of the first support plate (51) of each of the first blade mounting portion (5a) to the fifth blade mounting portion (5e) is connected to each feed roll (43). Is inserted into a groove (not shown) formed in the circumferential direction on the outer peripheral surface of the blade, and corresponds to each movement of the first blade mounting portion (5a) to the fifth blade mounting portion (5e). The feed roll (43) also moves along the support shaft (48).

  FIG. 5 is a cross-sectional view of the second blade mounting portion (5b) taken along the vertical plane including the line C-C in FIG. 3 and viewed from the direction of the arrows (shaft body (46) and protrusions described later ( 49) and the long gear (72) are not shown (same for FIG. 7). Referring to FIGS. 3 and 5, the second blade mounting portion (5b) includes a substantially annular first blade holder member (61) mounted around the shaft body (46) (see also FIG. 8). ) As shown in FIG. 2, FIG. 3, etc., the outer surface of the shaft body (46) is provided with ridges (49) along the rotational axis direction, and the inner surface of the first blade holder member (61) is A groove that fits into the ridge (49) is formed. Accordingly, the first blade holder member (61) is configured to be slidable on the shaft body (46) with the ridge (49) as a guide, and the rotation with respect to the shaft body (46) is restricted.

  A fan-shaped first wooden support member (62) is fixed to the outer peripheral surface of the first blade holder member (61). A curved first wooden board (63) is detachably attached to the curved outer surface of the first wooden supporting member (62) with screws (not shown). The first wooden board (63) is provided with a first blade unit (64) for forming a cut or cut in the cardboard sheet S. In addition, the elastic member demonstrated in relation to the prior art is arrange | positioned around the 1st blade unit (64) (illustration omitted).

  The second blade mounting portion (5b) further includes a substantially annular second blade holder member (65). The second blade holder member (65) is fitted in a bearing (67) fixed to an opening formed in the second support plate (66) fixedly arranged in parallel to the first support plate (51). A ring portion and a flange portion extending outward from the ring portion; and a fan-shaped second wooden support member (68) on the surface of the flange portion on the first support plate (51) side. Is fixed. A curved second wooden board (69) is detachably attached to the curved outer surface of the second wooden supporting member (68) with screws (not shown). The second wooden plate (69) is provided with a second blade unit (71) for forming a cut in the corrugated cardboard sheet S. In addition, the elastic member demonstrated in relation to the prior art is arrange | positioned around the 2nd blade unit (71) (illustration omitted).

  The second blade holder member (65) is an internal gear, and internal teeth are formed on the inner surface thereof. The internal teeth mesh with the shaft (46) of the die cylinder (41) or the long gear (72) (see FIG. 2, FIG. 3, FIG. 8, etc.) provided in parallel with the rotation axis G. The second blade holder member (65) is slidable along the long gear (72). In the shaft body (46), a long groove for partially storing the long gear (72) is formed along the axial direction (see FIGS. 3 and 8), and the first blade holder member (61) has The notch is formed so as not to interfere with the long gear (72).

  As shown in FIG. 2, one end of the long gear (72) is a bearing (not shown) provided in a first flange portion (73) fixed to one end of the shaft body (46) of the die cylinder (41). It is fixed to the shaft. FIG. 6 is a partial cross-sectional view showing the other end of the rotary die cutter (4). The other end of the long gear (72) is fixed to a bearing (75) provided in a second flange portion (74) fixed to the other end of the shaft body (46) of the die cylinder (41). . A gear (76) having external teeth and internal teeth is provided around the second flange portion (74), and the internal teeth mesh with the long gear (72). The external teeth of the gear (76) mesh with the drive gear (77) connected to a motor (not shown), and the shaft (46) of the die cylinder (41) is stationary. By rotating forward and reverse, both the second blade holder member (65) rotate around the rotation axis of the shaft body (46) via the long gear (72). As a result, the second blade holder member (65) is rotated around the shaft body (46) of the die cylinder (41) and is moved relative to the first wooden support member (62) or the first blade unit (64). The relative position of the second wooden support member (68) or the second blade unit (71) changes. During the operation of the rotary die cutter (4), it synchronizes with the rotation of the shaft body (46) of the die cylinder (41) so as to suppress the rotation of the gear (76) relative to the shaft body (46) of the die cylinder (41). As the drive gear (77) rotates, the relative position of the second blade unit (71) with respect to the shaft body (46) of the die cylinder (41) or the first blade unit (64) is maintained in the circumferential direction. The

  By having the configuration described above, the first blade unit (64) of the second blade mounting portion (5b) is fixed to the shaft body (46) of the die cylinder (41), while the second blade unit (71) Is configured to be rotatable around the rotation axis of the shaft body (46). The relative position of the second blade unit (71) with respect to the first blade unit (64) is appropriately adjusted in accordance with the dimensions of the corrugated cardboard sheet S processed by the rotary die cutter (4).

  In the present embodiment, the fourth blade mounting portion (5d) of the rotary die cutter (4) is configured in the same manner as the second blade mounting portion (5b). Detailed description is omitted.

  7 shows the fifth blade mounting portion (5e) of the rotary die cutter (4), taken along the line DD in FIG. 4 (with the rotation axis of a sheet feeding member (81) described later at the highest position). And FIG. 8 is an exploded perspective view showing some components of the fifth blade mounting portion (5e). As shown in FIGS. 4, 7 and 8, the fifth blade mounting portion (5e) includes a first blade holder member (61) and a first wooden support member similar to the second blade mounting portion (5b). (62), first blade unit (64), second support plate (66), bearing (67), second wooden support member (68), second wooden plate member (69), and second blade unit ( 71).

  However, the fifth blade mounting portion (5e) includes a sheet feeding member (81), a driving means for rotating the sheet feeding member (81) around its rotation axis, and a rotation axis of the sheet feeding member (81). The second blade mounting portion (5b) is different from the second blade mounting portion (5b) in that adjustment means for moving the die cylinder (41) up and down with respect to the rotation axis G is provided.

  The sheet feeding member (81) sandwiches the cardboard sheet S fed to the rotary die cutter (4) with the anvil (142) (see FIGS. 3, 4, and 6) of the anvil cylinder (42). The corrugated cardboard sheet S processed by the rotary die cutter (4) is provided for stable conveyance. The sheet feeding member (81) is an annular member and is fixed to the sheet feeding member mounting member (82). The attachment member (82) includes an annular part and a flange part extending outward from the annular part. A shaft body (46) and a long gear (72) are arranged inside the annular portion. A recess is formed along the inner edge of the sheet feeding member (81), and the flange portion of the mounting member (82) is fitted into the recess, and the sheet feeding member (81) is fixed to the flange portion with screws. Thus, it is arranged coaxially with the annular portion of the attachment member (82).

  The above drive means includes a second bearing (83) that fits on the outer peripheral surface of the annular portion of the attachment member (82), and a first drive gear for the sheet feeding member that is connected to the annular portion of the attachment member (82). (84), the second drive gear (85) for the sheet feeding member formed with the internal teeth that mesh with the external teeth formed on the first drive gear (84), and the second drive gear (85). The third bearing 86, the transmission gear 87 that meshes with the external teeth formed on the second drive gear 85, and the sheet feed member that is a long gear to which the transmission gear 87 is attached. Drive shaft (88).

  As shown in FIG. 2 and the like, the sheet feeding member drive shaft 88 passes through the first support plate 51 of each of the first blade mounting portion 5a to the fifth blade mounting portion 5e. Further, the die cylinder (41) is disposed in parallel to the rotation axis G. One end of the drive shaft for sheet feeding member (88) is fixed to a bearing (not shown) provided on the frame (45), and the other end of the drive shaft for sheet feeding member (88) is as shown in FIG. These are coupled to a synchronous drive mechanism (121) schematically shown in FIG.

  The transmission gear (87) is configured to slide along the sheet feeding member drive shaft (88) and move with the first support plate (51) when the motor (53) described above is operated. A cylindrical member (89) extends from one side of the transmission gear (87), and the cylindrical member (89) is rotatably fixed to the first support plate (51).

  The fifth blade mounting portion (5e) includes a third support plate (91) fixed with a bolt or the like in parallel to the first support plate (51). The third support plate (91) is formed with an opening through which the shaft body (46) and the long gear (72) pass, and an annular mounting member (92) (92) (92) and screws are used. A third bearing (86) is attached. The second drive gear (85) for the sheet feeding member is coupled to the first annular part having the third bearing (86) on the inner side and the outer teeth and the first annular part coaxially. And a second annular portion having inner teeth formed thereon.

  The first drive gear (84) includes a first annular portion in which external teeth that mesh with internal teeth formed in the second annular portion of the second drive gear (85) are formed, and a first annular portion And a second annular portion coupled coaxially. The second annular portion slightly protrudes from the first annular portion, is partially inserted inside the second bearing (83), and is coupled to the annular portion of the attachment member (82).

  The adjusting means includes a rotation shaft adjusting gear (93) of the sheet feeding member, an intermediate transmission gear (94) meshing with external teeth formed on the rotating shaft adjusting gear (93), and an intermediate transmission gear ( 94) and a rotating shaft adjusting drive shaft (95) that meshes with the shaft. The intermediate transmission gear (94) is pivotally attached to the first support plate (51) and is slidable along the rotary shaft adjusting drive shaft (95). When the motor (53) is operated, And move together with the first support plate (51).

  As shown in FIG. 2 and the like, the rotation shaft adjusting drive shaft (95) passes through the first support plate (51) of each of the first blade mounting portion (5a) to the fifth blade mounting portion (5e). The die cylinder (41) (or the shaft body (46)) is disposed in parallel to the rotation axis G. One end of the rotary shaft adjusting drive shaft (95) is fixed to a bearing (not shown) provided on the frame (45), and the other end of the rotary shaft adjusting drive shaft (95) is fixed to FIG. To the rotary shaft adjusting drive mechanism (122) shown in FIG.

  The rotating shaft adjusting gear (93) includes a first annular portion formed with external teeth that mesh with the intermediate transmission gear (94), and a second annular portion extending laterally from the first annular portion. And. The second annular portion is fitted into an opening formed in the first support plate (51), and a second bearing (83) is fitted inside the second annular plate, and the second bearing (83) is an attachment member. It is interposed between the annular portion of (82) and the second annular portion of the rotary shaft adjusting gear (93). The second bearing (83) is attached to the second annular portion by fixing a substantially annular holding member (96) to the second annular portion.

  The outer peripheral surface of the second annular portion of the rotating shaft adjusting gear (93) is arranged coaxially with the first annular portion. The center of the inner periphery of the second annular portion of the rotating shaft adjusting gear (93) is shifted from the center of the outer periphery of the second annular portion by an eccentric distance E of, for example, about 10 mm. Therefore, with respect to the rotation shaft adjusting gear (93) or the rotation center axis J of the first annular portion (corresponding to the center of the outer periphery of the second annular portion of the rotation shaft adjusting gear (93)), the second The bearing center axis K of the bearing (83) (corresponding to the center of the inner periphery of the second annular portion of the rotating shaft adjusting gear (93)) is configured to be eccentric by an eccentric distance E. 8 shows the shape of the holding member (96) having an eccentric opening, the vertical cross section of the second annular portion is the same as the side surface of the holding member (96) shown in FIG. It is formed so that it may become a shape.

  In the configuration described above, the rotation center axis of the sheet feeding member (81) is the same as the bearing center axis K of the second bearing (83). The rotating shaft adjusting drive mechanism (122) includes a motor, a speed reducer, and the like for driving the rotating shaft adjusting drive shaft (95), and when the motor is driven, the rotating shaft adjusting drive shaft ( 95) rotates, the rotary shaft adjusting gear (93) rotates via the intermediate transmission gear (94), and the bearing central shaft of the second bearing (83) is rotated along with the rotation of the rotary shaft adjusting gear (93). K moves. When the rotation shaft adjusting gear (93) rotates, the bearing center axis K of the second bearing (83), that is, the rotation center axis of the sheet feeding member (81) is rotated by the rotation center axis J of the rotation shaft adjusting gear (93). And the eccentric distance E as a radius.

  In the present embodiment, the rotation center axis J of the rotation axis adjusting gear (93) is arranged on the same straight line as the rotation axis G of the die cylinder (41) or the shaft body (46). Therefore, when the rotation shaft adjusting gear (93) rotates, the bearing center axis K of the second bearing (83), that is, the rotation center axis of the sheet feeding member (81) is centered on the rotation axis G of the die cylinder (41). And with the eccentric distance E as the radius. Therefore, the rotation axis of the sheet feeding member (81) can be adjusted up and down with respect to the rotation axis G of the die cylinder (41) by rotating the rotation axis adjusting gear (93) forward and backward. In order to adjust the rotational axis of the sheet feeding member (81) up and down with respect to the rotational axis G of the die cylinder (41), the sheet feeding member (81) is in the highest position and in the lowest position. The rotation shaft adjusting gear (93) may be rotated forward and backward within an angle range of 180 degrees with the state as both ends. It should be noted that in the practice of the present invention, it is not essential that the rotation center axis J of the rotation axis adjusting gear (93) and the rotation axis G of the die cylinder (41) coincide.

  FIG. 7 shows a state in which the rotation axis (the bearing center axis K of the second bearing (83)) of the sheet feeding member (81) of the fifth blade mounting portion (5e) is at the highest position. FIG. 9 shows the positional relationship among the sheet feeding member (81), the mounting member (82), the rotary shaft adjusting gear (93), and the shaft body (46) in this state (viewed from the left in FIG. 7). It is explanatory drawing. In FIG. 9, the external teeth of the rotating shaft adjusting gear (93) and the inner peripheral edge of the first annular portion are solid lines, and the inner peripheral edge of the second annular portion of the rotating shaft adjusting gear (93) is an alternate long and short dash line. Thus, the outer peripheral edge of the sheet feeding member (81) and the inner peripheral edge of the attachment member (82) are indicated by a two-dot chain line.

  FIG. 10 shows a state in which the rotary shaft adjusting gear 93 is rotated 90 degrees clockwise from the state shown in FIG. The bearing center axis K of the second bearing (83), that is, the rotation center axis of the sheet feeding member (81) is the rotation axis G of the die cylinder (41) or the shaft body (46) (or the rotation axis adjusting gear (93 ) At the same height as the rotation center axis J). In FIG. 4, a pattern in which the sheet feeding member (81) is in the position shown in FIG. 9 is shown.

  FIG. 11 shows a state where the rotary shaft adjusting gear (93) is rotated 90 degrees clockwise from the state shown in FIG. 10, and the bearing central axis K of the second bearing (83), that is, the sheet feeding member (81 ) Is the lowest position.

  FIG. 12 shows the sheet feeding member (81), the mounting member (82), the first drive gear (84), the first driving gear (84) in a state where the rotation axis of the sheet feeding member (81) shown in FIG. It is explanatory drawing which shows the positional relationship of 2 drive gearwheels (85) and a shaft body (46). In FIG. 12, the external teeth of the first drive gear (84), the internal teeth and external teeth of the second drive gear (85), and the inner peripheral edge of the first annular portion of the second drive gear (85) are solid lines. Thus, the outer peripheral edge of the sheet feeding member (81) and the inner peripheral edge of the attachment member (82) are indicated by a two-dot chain line.

  In the state shown in FIG. 12, the external teeth of the first drive gear (84) mesh with the internal teeth located on the upper side of the internal teeth of the second drive gear (85). As shown in FIG. 7 and the like, the bearing center axis of the third bearing (86) is located on the same or the same straight line as the rotation center axis J of the rotation axis adjusting gear (93). When the synchronous drive mechanism (121) shown in FIG. 2 is actuated to rotate the sheet feeding member drive shaft (88), the second drive gear (85) is rotated by the rotary shaft adjusting gear (93) or its first circle. It rotates about the rotation center axis J of the ring portion or the rotation axis G of the die cylinder (41).

  When the second drive gear (85) rotates, the first drive gear (84) rotates about the bearing center axis K of the second bearing (83). When the first drive gear (84) rotates, the attachment member (82) and the sheet feeding member (81) coupled to the first drive gear (84) rotate around the bearing center axis K of the second bearing (83).

  When the rotation shaft adjusting gear (93) rotates, the position of the first drive gear (84) is displaced about the rotation center axis J of the rotation shaft adjusting gear (93) or the rotation axis G of the die cylinder (41). Thus, the region of the internal teeth of the second drive gear (85) that meshes with the external teeth of the first drive gear (84) changes. For example, in the state where the bearing center axis K of the second bearing (83) shown in FIG. 11, that is, the rotation center axis of the sheet feeding member (81) is at the lowest position, the external teeth of the first drive gear (84) are Therefore, the second drive gear (85) meshes with the internal teeth located on the lower side of the internal teeth.

  In the present embodiment, the first blade mounting portion (5a) and the third blade mounting portion (5c) of the rotary die cutter (4) have the shapes of the first blade unit (64) and the second blade unit (71). The first blade mounting portion (5a) and the third blade mounting are the same as the fifth blade mounting portion (5e) except that it is different from that of the five blade mounting portion (5e). A detailed description of the part (5c) will be omitted. The first blade mounting portion (5a), the third blade mounting portion (5c), the bearing central axis K of the second bearing (83) of the fifth blade mounting portion (5e), that is, the first blade mounting portion (5a). The rotation center axes of the sheet feeding member (81) of the third blade mounting portion (5c) and the fifth blade mounting portion (5e) are arranged on the same straight line. Also, the first blade mounting portion (5a), the third blade mounting portion (5c), the rotation shaft adjusting gear (93) of the fifth blade mounting portion (5e), or the rotation center axis J of the first annular portion thereof. These are arranged on the same straight line (in this embodiment, the rotation axis G of the die cylinder 41). Height of sheet feeding member (81) of first blade mounting portion (5a), third blade mounting portion (5c), fifth blade mounting portion (5e), or die cylinder (41) or shaft body (46) The position around the rotation axis G is always the same.

  FIG. 13 is an explanatory diagram showing configurations of the first blade unit (64) and the second blade unit (71) in the first blade mounting portion (5a) to the fifth blade mounting portion (5e) of the rotary die cutter (4). It is. The first wooden support member (62) and the first wooden plate member (63) of the first blade mounting portion (5a) to the fifth blade mounting portion (5e) are the die cylinder (41) or the shaft body (46). They are arranged at the same position around the rotation axis G. The same applies to the second wooden support member (68) and the second wooden plate member (69) of the first blade mounting portion (5a) to the fifth blade mounting portion (5e).

  The first blade unit (64) of the fifth blade mounting portion (5e) is composed of a blade member that is curved in a “C” shape (seeing the blade tip from above the blade member). The second blade unit (71) of the section (5e) has a shape in which the blade member of the first blade unit (64) of the fifth blade mounting section (5e) is turned upside down on the paper surface of FIG. (See also the blade tip from above the blade member) (see also FIG. 8). The first blade unit (64) and the second blade unit (71) of the first blade mounting portion (5a) are respectively the first blade unit (64) and the second blade unit (71 of the fifth blade mounting portion (5e). ) Is reversed left and right on the paper surface of FIG.

  The first blade unit (64) of the second blade mounting portion (5b) to the fourth blade mounting portion (5d) includes a blade member (right side) of the first blade unit (64) of the first blade mounting portion (5a). The blade member (left side) of the first blade unit (64) of the fifth blade mounting portion (5e) is combined to form a “C” shape. The second blade unit (71) of the second blade mounting portion (5b) to the fourth blade mounting portion (5d) includes a blade member (right side) of the second blade unit (71) of the first blade mounting portion (5a). The blade member (left side) of the second blade unit (71) of the fifth blade mounting portion (5e) is combined to form an inverted “C” shape.

  In addition to one end of the sheet feeding member drive shaft (88), one end of the shaft body (46) of the die cylinder (41) is also connected to the synchronous drive mechanism (121) shown in FIG. The synchronous drive mechanism (121) includes a speed reducer for synchronizing the rotation of the drive shaft (88) for the sheet feeding member and the rotation of the shaft body (46), and a drive motor (both not shown). 1) When the drive motor is driven, the synchronous drive mechanism (121) rotates the shaft body (46) of the die cylinder (41) in the direction shown in FIG. The sheet feeding member drive shaft (88) is rotated so as to rotate in the same direction as the body (46) (clockwise in FIG. 1). The rotational speed of the sheet feeding member drive shaft (88) is adjusted such that when the shaft (46) makes one revolution, the sheet feeding member (81) also makes one revolution.

  As shown in FIG. 3 and the like, the anvil cylinder (42) includes an anvil cylinder shaft body (141) and an anvil (142) wound around the anvil cylinder shaft (141). The rotary die cutter (4) of the present embodiment is configured to be able to adjust the position of the anvil cylinder (42) in the vertical direction or the position of the rotation axis of the anvil cylinder (42) with respect to the rotation axis of the die cylinder (41). Yes. As shown in FIG. 6, one end of the anvil cylinder shaft body (141) is fixed to an eccentric bearing (143) provided on the frame (45). The other end of the anvil cylinder shaft (141) is similarly configured (not shown). When the eccentric bearing (143) rotates forward and backward within a range of 180 degrees, the rotating shaft of the anvil cylinder shaft body (141) rotates forward and backward around the rotating shaft of the eccentric bearing (143) and with the eccentric distance as the radius. The position of the anvil cylinder (42) is adjusted up and down. The eccentric distance, that is, the eccentric distance of the rotating shaft of the anvil cylinder shaft body (141) with respect to the rotating shaft of the eccentric bearing (143) is, for example, approximately the same as the eccentric distance E (for example, 10 mm). The anvil cylinder shaft (141) is also connected to the synchronous drive mechanism (121) shown in FIG. 2 and the like, and the anvil cylinder (42) is rotated as shown in FIG. Rotate. The rotation of the anvil cylinder (42) is adjusted so that when the die cylinder (41) rotates once, the anvil cylinder (42) also rotates once.

  Next, a pattern in which the cardboard sheet S is processed by the cardboard sheet processing apparatus including the rotary die cutter (4) of the present embodiment will be described.

  FIG. 14A shows the shape of the corrugated cardboard sheet S in the paper feeding unit (1). The corrugated cardboard sheet S processed by the corrugated cardboard processing apparatus has a rectangular shape, and two ruled lines K1 and K2 (shown by broken lines) along the longitudinal direction are formed in advance. The cardboard sheet S is sent from the paper feed unit (1) to the first printer (2) so that the short side direction of the cardboard sheet S is parallel to the conveyance direction PL of the cardboard sheet S. In the first printer (2) and further in the second printer (3), printing is performed on the upper surface of the cardboard sheet S (the printed pattern is not shown in FIGS. 14b and 15a-c).

  The cardboard sheet S discharged from the second printer (3) is cut or cut or cut by the rotary die cutter (4) of the present embodiment. FIG. 14 b shows the corrugated cardboard sheet S after being processed by the rotary die cutter (4). First, the first blade unit (64) of the first blade mounting portion (5a) to the fourth blade mounting portion (5d) acts on the downstream end portion of the corrugated cardboard sheet S, so that each first blade unit ( 64) are formed, and the corner N5 at the upstream end of the cardboard sheet S is chamfered by the first blade unit (64) of the fifth blade mounting portion (5e). To be rounded.

  Next, the second blade unit (71) of the first blade mounting portion (5a) to the fourth blade mounting portion (5d) acts on the upstream end portion of the corrugated cardboard sheet S, whereby each second blade unit. Curved cuts N1 ′ to N4 ′ corresponding to (71) are formed, and the corner N5 ′ at the downstream end of the corrugated cardboard sheet S is formed at the second blade unit (71 of the fifth blade mounting portion (5e)). ) And rounded.

  The corrugated board sheet S having the form shown in FIG. 14b is sent to the creaser (10). The crease roll (102) of the creaseer (10) is provided with four crease edges (not shown) spaced apart in the machine width direction. The crease (10) has these crease edges. Accordingly, ruled lines Q1 to Q4 along the short direction of the cardboard sheet S are engraved as shown in FIG. 15a. Each position of the crease edge can be freely changed in the machine width direction. The ruled line Q1 is formed so as to be in contact with or intersect with the region of the end of the cut N1 and the cut N1 '. The ruled line Q2 is formed so as to pass between the inverted C-shaped cut N2 and between the C-shaped cut N2 '. The ruled line Q3 is formed so as to pass between the inverted C-shaped cuts N3 and between the C-shaped cuts N3 '. The ruled line Q2 is formed so as to pass between the inverted C-shaped cut N4 and between the C-shaped cut N4 '.

  The corrugated cardboard sheet S having the form shown in FIG. 15a is sent to the double slotter (11). FIG. 15b shows the cardboard sheet S after being processed by the double slotter (11). The upper first slotter roll (111) has four grooving blades (not shown) spaced apart in the machine width direction, and the lower first slotter roll (112) has four slots. Four receiving blades (not shown) corresponding to the groove cutting blades are provided. As the corrugated cardboard sheet S passes between the first slotter rolls 111 and 112, the upstream portion of the corrugated cardboard sheet S is grooved (cut). In the upstream portion of the corrugated cardboard sheet S, grooving is performed so that the ruled lines Q2 to Q4 are partially deleted. Further, grooving is performed so that the edge of the groove is formed along the ruled line Q1. When the edge of the groove intersects with the cut N1 ', a round corner corresponding to the cut N1' is formed as shown in FIG. 15b. The positions of the grooving blades and the receiving blades of the first slotter rolls (111) and (112) can be freely changed in the machine width direction.

  Thereafter, the corrugated cardboard sheet S is sent to the second slotter rolls (113) and (114) through the feed rolls (115) and (116). The upper second slotter roll (113) is provided with four grooving blades (not shown) spaced apart in the machine width direction, and the lower second slotter roll (114) has four slots. Four receiving blades (not shown) corresponding to the groove cutting blades are provided. As the corrugated board sheet S passes between the second slotter rolls (113) and (114), the downstream portion of the corrugated board sheet S is subjected to grooving (cutting) processing. In the downstream portion of the cardboard sheet S, grooving is performed so that the ruled lines Q2 to Q4 are partially deleted. Further, grooving is performed so that the edge of the groove is formed along the ruled line Q1. When the edge of the groove intersects with the cut N1, a round corner corresponding to the cut N1 is formed as shown in FIG. 15b. The positions of the grooving blades and the receiving blades of the second slotter rolls (113) and (114) can be freely changed in the machine width direction.

  As shown in FIG. 15b, the corrugated cardboard sheet S after being processed by the double slotter (11) has four panel portions (201a-d), eight flap portions (202) with rounded corners, and one end side. And a margin part (203) provided on the head. The grooving blade and the receiving blade for grooving along the ruled line Q1 in the first slotter rolls (111) and (112) and the second slotter rolls (113) and (114) are adhesive margin portions (203). The downstream edge and the upstream edge are formed obliquely.

  The corrugated cardboard sheet S having the form shown in FIG. 15b is sent from the double slotter (11) to the folder gluer (12). In the folder gluer (12), an adhesive is applied to the upper surface of the adhesive margin portion (203), and the panel portions (201a) (201d) at both ends of the corrugated cardboard sheet S are bent approximately 180 degrees along the ruled lines Q2 and Q4. Thus, the upper surface of the adhesive margin portion (203) is joined to the rear surface of the panel portion (201d). Thus, the corrugated cardboard sheet S is processed into a form that can be assembled into a rectangular parallelepiped shape or a box shape as shown in FIG. 15c. The corrugated cardboard sheet S shown in FIG. 15c is sent from the folder gluer (12) to the counter ejector (13) and is bundled every predetermined number.

  The corrugated cardboard sheet S shown in FIG. 15c is safe because the corners of the eight flap portions (202) are rounded as shown in FIG. 15b or FIG. 15c. Also, since the corners of the adjacent flap portions (202) are rounded in the corrugated cardboard sheet S, the corners of the adjacent flap portions (202) interfere with each other when being assembled into a rectangular parallelepiped shape or a box shape. Does not happen. In the illustrated corrugated cardboard processing apparatus, the corrugated cardboard sheet S is sent from the folder gluer (12) to the counter ejector (13) in the form shown in FIG. 15c, but the cardboard sheet S is box-shaped after the folder gluer (12). When the automatic box making apparatus to be assembled is provided, the assembling process in the automatic box making apparatus will be performed smoothly.

  In order to avoid interference between the corners of the adjacent flap portions (202), it may be sufficient if the corners of one adjacent flap portion (202) are rounded. In this case, any one of the blades in the first blade unit (64) and the second blade unit (71) of the second blade mounting portion (5b) to the fourth blade mounting portion (5d) shown in FIG. The member may be omitted.

  As described above, the rotary die cutter (4) of the present embodiment includes five first blade mounting portions (5a) to fifth blades each having a first blade unit (64) and a second blade unit (71). The first blade mounting portion (5a) to the fifth blade mounting portion (5e) are independently provided in the direction of the rotation axis of the die cylinder (41) or the anvil cylinder (42). Alternatively, the rotary die cutter (4) is configured to be movable in the machine width direction, and the relative position of the first blade unit (64) and the second blade unit (71) can be freely rotated around the rotation axis of the die cylinder (41). Can be adjusted. Therefore, in the processing of a corrugated sheet that is the basis of a general corrugated cardboard box having four flaps on both the top and bottom sides, the size of the corrugated sheet and the length of the panel part (201) are changed. However, it is possible to form a cut as shown in FIG. 14b and cut out the corner of the cardboard sheet without exchanging the first blade unit (64) and the second blade unit (71).

  In the rotary die cutter (4) of the present embodiment, the sheet feeding member (81) is provided in the first blade mounting portion (5a), the third blade mounting portion (5c), and the fifth blade mounting portion (5e). However, the sheet feeding member (81) may be provided in all of the first blade mounting portion (5a) to the fifth blade mounting portion (5e). As long as the effects and benefits of the sheet feeding member (81) can be obtained, the combination of the first blade mounting portion (5a) to the fifth blade mounting portion (5e) provided with the sheet feeding member (81) is not limited.

  In the rotary die cutter (4) of the present embodiment, the five blade mounting portions (5a-e) are provided, but the blade mounting portion of the rotary die cutter (4) is provided as long as the effects of the present invention can be obtained. Is not limited, and the sheet feeding member (81) may be provided in at least one blade mounting portion. In the case where a plurality of blade mounting portions are provided, when the corrugated sheet S can be stably conveyed without providing a large number of sheet feeding members (81) in each blade mounting portion, the rotary die of this embodiment is used. Like the cutter (4), a blade mounting portion where the sheet feeding member (81) is not provided may be disposed between the blade mounting portions where the sheet feeding member (81) is provided.

  Further, the sheet feeding member (81) and the driving mechanism and adjusting mechanism related to the sheet feeding member (81) have five blade mounting portions such as a rotary die cutter (4), and are intended for cornering the flap portion as illustrated. The present invention can also be applied to a rotary die cutter other than the rotary die cutter that performs the above processing. As long as the effect of the sheet feeding member (81) can be obtained, the number of blade mounting portions provided in the rotary die cutter and the structure thereof are not limited, and the form of processing of the corrugated cardboard sheet performed by the rotary die cutter is not limited. (For example, punching may be performed). Furthermore, the number of blade members provided in each blade mounting portion is not limited. Further, the sheet feeding member (81) and the driving mechanism and adjusting mechanism related to the sheet feeding member (81) may be used in a rotary die cutter that processes a sheet-like material other than a corrugated cardboard sheet.

  In the rotary die cutter (4) of the present embodiment, the anvil cylinder (42) is disposed on the lower side of the die cylinder (41), but in the present invention, the die cylinder (41) is disposed on the lower side of the anvil cylinder (42). ) May be applied to a rotary die cutter.

  The above description is provided to illustrate the present invention and should not be construed as limiting the invention described in the claims or reducing the scope thereof. The configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope described in the claims.

(4) Rotary die cutter
(41) Die cylinder
(42) Anvil cylinder
(46) Shaft
(5a-e) 1st to 5th blade mounting part
(64) First blade unit
(71) Second blade unit
(81) Sheet feeding member
(82) Mounting member
(84) First drive gear
(85) Second drive gear
(93) Rotating shaft adjustment gear
(142) Anvil G Die cylinder rotation axis J Rotation axis adjustment gear rotation center axis K Bearing center axis S Corrugated sheet

Claims (6)

A die cylinder and an anvil cylinder that rotate in opposite directions around rotation axes that are parallel to each other, and a shaft body of the die cylinder pass therethrough, and a plurality of the cylinders that are spaced apart from each other in the rotation axis direction of the die cylinder A rotary die cutter having a blade mounting portion,
In each blade mounting portion, one or a plurality of blade members configured to rotate with the shaft body of the die cylinder around the rotational axis of the die cylinder, and the shaft body of the die cylinder pass through the inside, An annular sheet feeding member configured to rotate in the same direction as the die cylinder around a second rotation axis parallel to the rotation axis of the die cylinder;
The sheet material passing between the die cylinder and the anvil cylinder is sandwiched and conveyed between the sheet feeding member and the anvil wound around the anvil cylinder,
Driving means for rotating the sheet feeding member around a second rotation axis of the sheet feeding member;
The rotary die cutter further comprising an adjusting means for moving the second rotation shaft of the sheet feeding member up and down. Each blade mounting portion includes an attachment member to which the sheet feeding member is attached,
The mounting member includes a first annular portion disposed coaxially with the sheet feeding member, and a shaft body of the die cylinder is disposed so as to pass inside the first annular portion,
The adjusting means includes a first gear having external teeth, and a second annular portion having an inner circumference center different from an outer circumference center is provided on one side of the first gear. Provided to be placed outside the part,
A bearing is interposed between the first annular portion and the second annular portion,
The rotary die cutter according to claim 1, wherein a bearing central axis of the bearing is eccentric with respect to a rotation axis of the die cylinder. The driving means includes a second gear fixed to an end of the first annular portion coaxially with the first annular portion, and internal teeth that mesh with external teeth of the second gear. The rotary die cutter according to claim 2, further comprising a third gear having external teeth.   The rotary die cutter according to any one of claims 1 to 3, wherein each blade mounting portion is configured to be movable independently of each other along a rotation axis direction of the die cylinder.   A second blade mounting portion is provided between two adjacent blade mounting portions, and the second mounting portion rotates with the shaft body of the die cylinder around the rotation axis of the die cylinder. The rotary die cutter according to any one of claims 1 to 4, wherein one or a plurality of blade members are provided. A rotary die cutter includes a die cylinder and an anvil cylinder rotating in opposite directions to each other in parallel with the rotational axis each other and a cutter mounting portion shaft body that has penetrated the die cylinder,
In the blade mounting portion, one or a plurality of blade members configured to rotate with the shaft body of the die cylinder around the rotation axis of the die cylinder, and the shaft body of the die cylinder pass through the inside, and An annular sheet feeding member configured to rotate in the same direction as the die cylinder around a second rotation axis parallel to the rotation axis of the die cylinder;
The sheet material passing between the die cylinder and the anvil cylinder is sandwiched and conveyed between the sheet feeding member and the anvil wound around the anvil cylinder,
Driving means for rotating the sheet feeding member around a second rotation axis of the sheet feeding member;
The rotary die cutter further comprising an adjusting means for moving the second rotation shaft of the sheet feeding member up and down.

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