Rotary die unit

Abstract

A rotary die unit includes a body frame having a base, and a first vertical frame portion and a second vertical frame portion, a first roll, a movable frame, and a second roll. The first vertical frame portion has two columns extending in an up-down direction. The second roll is insertable and removable through a space between the two columns by moving the movable frame in an axial direction of the second roll in a state where the second roll is supported. The first roll is insertable and removable through a space between the two columns by moving the movable frame in the axial direction of the first roll in a state where the first roll is supported directly or via another member.

Description

TECHNICAL FIELD

[0001] The present invention relates to a rotary die unit.

[0002] Priority is claimed on Japanese Patent Application No. 2023-054606, filed March 30, 2023, the content of which is incorporated herein by reference.BACKGROUND ART

[0003] A rotary die unit in which a die cutter and an anvil roll disposed vertically are supported by a frame is known. Patent Document 1 discloses a unit having a structure in which an anvil roll having a high replacement frequency can be directly replaced.Citation ListPatent Document

[0004] Patent Document 1: Japanese Patent No. 6932040SUMMARY OF INVENTIONTechnical Problem

[0005] With the unit described in Patent Document 1, the anvil roll can be easily and quickly replaced. However, in a case where the die cutter disposed on the upper side is replaced, it is necessary to detach the frame from the equipment, and the replacement work takes time.

[0006] An object of the present invention is to provide a rotary die unit in which upper and lower rolls can be easily replaced.Solution to Problem

[0007] (1) According to one aspect of the present invention, there is provided a rotary die unit including a body frame having a base, and a first vertical frame portion and a second vertical frame portion that extend upward from the base, a first roll that is supported by the first vertical frame portion and the second vertical frame portion via bearings, a movable frame that is located at a lower portion of the body frame and is movable relative to the body frame along an axial direction of the first roll; and a second roll that is supported by the movable frame via bearings. The first vertical frame portion has two columns extending in an up-down direction. The second roll is insertable and removable through a space between the two columns by moving the movable frame in an axial direction of the second roll in a state where the second roll is supported. The first roll is insertable and removable through a space between the two columns by moving the movable frame in the axial direction of the first roll in a state where the first roll is supported directly or via another member. (2) In (1), a configuration in which a plate-shaped housing that extends in a radial direction of the first roll is mounted on each of support shaft portions at both ends of the first roll via the bearings, a plate-shaped housing that extends in a radial direction of the second roll is mounted on each of support shaft portions at both ends of the second roll via the bearings, the movable frame has two roll support portions each supporting the housing of the first roll or the second roll from below, and the rotary die unit further includes a jig that is placed on the roll support portion and supports the first roll from below may be adopted. (3) In (1) or (2), a configuration in which the jig and the roll support portion are connected to each other via a hinge may be adopted. (4) In any one of (1) to (3), a configuration in which the roll support portion, the housing, and the jig are provided with an engagement mechanism that suppresses movement of the housing or the jig in an axial direction with respect to the roll support portion may be adopted. (5) In (1), a configuration in which a plate-shaped housing that extends in a radial direction of the first roll is mounted on each of support shaft portions at both ends of the first roll via the bearings, a plate-shaped housing that extends in a radial direction of the second roll is mounted on each of support shaft portions at both ends of the second roll via the bearings, the movable frame has U-shaped support blocks at both end portions of the movable frame as viewed from an axial direction, and the housing mounted on the second roll is supported by a recessed portion of the U-shaped support block may be adopted. (6) In (5), a configuration in which the roll support portion and the support block are provided with a positioning mechanism that suppresses movement of the support block in an axial direction with respect to the roll support portion may be adopted. (7) In any one of (1) to (6), a configuration in which the movable frame is connected to the body frame via a slide rail may be adopted. Advantageous Effects of Invention

[0008] According to one aspect of the present invention, there is provided a rotary die unit in which upper and lower rolls can be easily replaced.BRIEF DESCRIPTION OF DRAWINGS

[0009] [FIG. 1] A side view of a rotary die unit of an embodiment. [FIG. 2] A cross-sectional view taken along the line II-II in FIG. 1. [FIG. 3] A perspective view of the rotary die unit. [FIG. 4] A side view of a movable frame. [FIG. 5] A perspective view of a roll support portion. [FIG. 6A] An operation explanatory view of the rotary die unit. [FIG. 6B] An operation explanatory view of the rotary die unit. [FIG. 6C] An operation explanatory view of the rotary die unit. [FIG. 6D] An operation explanatory view of the rotary die unit. [FIG. 6E] An operation explanatory view of the rotary die unit. [FIG. 7] A perspective view showing a jig 100. [FIG. 8] An explanatory view showing a connection structure of a jig according to Modification Example 1. [FIG. 9] A view showing Modification Example 3 of the rotary die unit. [FIG. 10] Views showing a positioning mechanism according to Modification Example 4. [FIG. 11] Views showing the positioning mechanism according to Modification Example 4. DESCRIPTION OF EMBODIMENTS

[0010] FIG. 1 is a side view of a rotary die unit of the present embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1. FIG. 3 is a perspective view of the rotary die unit. FIG. 4 is a side view of a movable frame 4. FIG. 5 is a perspective view of a roll support portion 61.

[0011] A rotary die unit 1 of the present embodiment has a die-cut roll (first roll) 2, an anvil roll (second roll) 3, a movable frame 4, a body frame 5, a first cylinder 6A, and a second cylinder 6B.

[0012] In the present specification, a direction parallel to an axis L2 of the die-cut roll 2 or an axis L3 of the anvil roll 3, which will be described later, may be simply referred to as an axial direction.

[0013] In the present embodiment, the die-cut roll 2 is disposed at an upper portion of the body frame 5, and the anvil roll 3 is disposed at a lower portion of the body frame 5, but the disposition of the die-cut roll 2 and the anvil roll 3 may be exchanged.

[0014] The die-cut roll 2 is a cylindrical member centered on the axis L2. The die-cut roll 2 has a large-diameter processing portion 2A at a central portion in the axial direction, and has small-diameter support shaft portions 2B and 2C extending from the processing portion 2A to both sides in the axial direction. The die-cut roll 2 has annular bearer portions 2D and 2E that protrude outward in the radial direction from the outer peripheral surface of the processing portion 2A at both end portions of the processing portion 2A in the axial direction.

[0015] In the die-cut roll 2, the inner peripheral portion of the processing portion 2A and the support shaft portions 2B and 2C are single members made of a steel material or the like, and a cylindrical member made of a cemented carbide or the like harder than the steel material is fitted to the outer peripheral portion of the processing portion 2A. In the case of the present embodiment, three cylindrical members are arranged side by side between the bearer portions 2D and 2E in the axial direction. A cutting edge 2a is formed on each of the two cylindrical members located at both ends. The central cylindrical member having no cutting edge is made of steel or a cemented carbide.

[0016] The die-cut roll 2 is installed on the body frame 5 with the axis L2 horizontal. The processing portion 2A of the die-cut roll 2 is disposed at a central portion of the body frame 5 in the longitudinal direction. The support shaft portion 2C of the die-cut roll 2 is connected to a rotary drive unit (not shown).

[0017] Housings 20A and 20B are mounted on the support shaft portions 2B and 2C of the die-cut roll 2. The housings 20A and 20B are rectangular plate-like members, and have a circular through-hole that penetrates a plate surface in the axial direction. Each of the housings 20A and 20B holds a bearing 21 consisting of a ball bearing at the inner peripheral portion of the through-hole. The support shaft portions 2B and 2C are inserted into the inner ring of the bearing 21.

[0018] The anvil roll 3 is a cylindrical member centered on the axis L3. The anvil roll 3 has a large-diameter processing portion 3A at a central portion in the axial direction. The anvil roll 3 has a support shaft portion 3B and a support shaft portion 3C extending from the processing portion 3A to both sides in the axial direction. The anvil roll 3 is placed on the movable frame 4 with the axis L3 horizontal.

[0019] Housings 30A and 30B are mounted on the support shaft portions 3B and 3C of the anvil roll 3. The housings 30A and 30B are rectangular plate-like members, and have a circular through-hole that penetrates a plate surface in the axial direction. Each of the housings 30A and 30B holds a bearing 31 consisting of a ball bearing at the inner peripheral portion of the through-hole. The support shaft portions 3B and 3C are inserted into the inner ring of the bearing 31.

[0020] The body frame 5 includes a base 50 having a rectangular shape in a plan view, a first vertical frame portion 51 and a second vertical frame portion 52 that extend upward from both ends of the base 50 in an axial direction (longitudinal direction), and a top plate portion 55 that is bridged between an upper end of the first vertical frame portion 51 and an upper end of the second vertical frame portion 52.

[0021] The first cylinder 6A and the second cylinder 6B are fixed to both end portions of the upper surface of the base 50 in the axial direction. The first cylinder 6A and the second cylinder 6B are, for example, a hydraulic cylinder or an air cylinder. The first cylinder 6A is located below the housing 30A of the anvil roll 3. The housing 30A is pushed upward by the plunger of the first cylinder 6A. The second cylinder 6B is located below the housing 30B of the anvil roll 3. The housing 30B is pushed upward by the plunger of the second cylinder 6B.

[0022] The first vertical frame portion 51 has two columns 51a and 51b standing at two corner portions located on one short side of the base 50. The second vertical frame portion 52 is located at a corner portion of the short side of the base 50 on the side opposite to the first vertical frame portion 51. The second vertical frame portion 52 has two columns 52a and 52b.

[0023] The top plate portion 55 is fixed to the upper end surfaces of the first vertical frame portion 51 and the second vertical frame portion 52. The body frame body may include a reinforcing beam or the like in addition to the first vertical frame portion 51, the second vertical frame portion 52, and the top plate portion 55.

[0024] The housings 20A and 20B of the die-cut roll 2 are fixed to the upper portions of the first vertical frame portion 51 and the second vertical frame portion 52. The housing 20A is disposed between the columns 51a and 51b. The housing 20A is screwed to the top plate portion 55 in a state where a rectangular parallelepiped-shaped spacer 24 is interposed therebetween.

[0025] The housing 20B on the side opposite to the housing 20A is disposed between the columns 52a and 52b. The housing 20B is also screwed to the top plate portion 55 in a state where the spacer 24 is interposed therebetween, similarly to the housing 20A.

[0026] The die-cut roll 2 supported by the housing 20A or 20B via the bearing 21 is supported in a horizontal posture between the first vertical frame portion 51 and the second vertical frame portion 52 of the body frame 5. In the rotary die unit 1 of the present embodiment, as shown in FIG. 1, the diameter of the processing portion 2A of the die-cut roll 2 is smaller than the interval between the columns 52a and 52b of the second vertical frame portion 52. Since the interval between the columns 51a and 51b of the first vertical frame portion 51 is the same as the interval between the columns 52a and 52b, the diameter of the processing portion 2A is smaller than the interval between the columns 51a and 51b. That is, the die-cut roll 2 can be pulled out to the outside of the body frame 5 by moving horizontally through the space between the columns 51a and 51b.

[0027] The body frame 5 has beam members that fix the movable frame 4 to the lower portion of the body frame 5. As shown in FIG. 3, the body frame 5 has a beam member 48b provided at the lower portion of the body frame 5 and cantilevered beam members 49a and 49b. Although only one beam member 48b is shown in FIG. 3, as shown in FIG. 1, the beam member 48a that forms a pair with the beam member 48b is disposed along a long side on the back side of the base 50. Each of both ends of the beam member 48a is fixed to the column 51a and the column 52b. Each of both ends of the beam member 48b is fixed to the column 51b and the column 52a. The beam member 49a is fixed to the column 51a. The beam member 49b is fixed to the column 51b.

[0028] The beam members 48b and 49b are arranged side by side in the axial direction. A slide rail 60B is attached to a surface of the beam members 48b and 49b facing the inside of the body frame 5. On the back side in FIG. 3, the beam member 48a and the beam member 49a are arranged side by side in the axial direction, and a slide rail 60A is attached to a surface of the beam members 48a and 49a facing the inside of the body frame 5. The movable frame 4 is attached inside the two slide rails 60A and 60B. The movable frame 4 is located above the base 50.

[0029] As shown in FIGS. 3 and 4, the movable frame 4 includes a base body 41 on a rectangular frame extending in the axial direction, a support plate 42 on a rectangular frame fixed to an upper surface of the base body 41, two roll support portions 61 and 62 fixed to an upper surface of the support plate 42, and a handle 45 fixed to an end surface of the base body 41 on one side in the axial direction.

[0030] The slide rails 60A and 60B are attached to each of two side end surfaces of the base body 41 that extend along the axial direction. The movable frame 4 is connected to the beam members 48b, 49a, and 49b of the body frame 5 via slide rails 60A and 60B. In the case of the present embodiment, the slide rails 60A and 60B are three-stage slide rails in which a first rail 60a, a second rail 60b, and a third rail 60c are connected as shown in FIG. 4. The first rail 60a is fixed to the base body 41, and the third rail 60c is fixed to the beam member of the body frame 5. With this configuration, the movable frame 4 can pull out the entire base body 41 to the outside of the body frame 5.

[0031] As shown in FIG. 4, a support plate 42 having a shorter axial length than the base body 41 is fixed on the base body 41. The axial length of the support plate 42 substantially matches the axial length of the body frame 5 excluding the beam members 49a and 49b. That is, in a case where the movable frame 4 is disposed inside the body frame 5, the axial positions of the end surfaces of both ends of the support plate 42 in the axial direction substantially match the surfaces of the first vertical frame portion 51 facing outward in the axial direction and the surfaces of the second vertical frame portion 52 facing outward in the axial direction.

[0032] The roll support portions 61 and 62 are fixed to each of both end portions of the upper surface of the support plate 42 in the axial direction. As shown in FIG. 5, the roll support portion 61 includes a base portion 61a, four support claws 61b, and two positioning pins 61c. The base portion 61a is a rod-like member extending in a horizontal direction orthogonal to the axial direction. The four support claws 61b are disposed at each of both end portions of a side surface along a long side of the base portion 61a. The four support claws 61b protrude upward from the upper surface of the base portion 61a. The two support claws 61b face each other in the axial direction with the base portion 61a interposed therebetween. The positioning pin 61c protruding upward from the upper surface of the base portion 61a is provided at each of both end portions of the upper surface of the base portion 61a. The positioning pin 61c is disposed between the two support claws 61b.

[0033] The base portion 61a has a through-hole 61d that penetrates a central portion of the base portion 61a in a plan view in the up-down direction. The support plate 42 has a through-hole 42a that is connected to the through-hole 61d of the base portion 61a. A relay pin 65 (see FIGS. 1 and 2) is accommodated inside the through-holes 61d and 42a in a state of being movable up and down.

[0034] The roll support portion 62 has the same configuration as the roll support portion 61. The roll support portion 62 includes a base portion 62a, four support claws 62b, and two positioning pins 62c. The roll support portion 62 also has a through-hole 62d (see FIG. 1) similar to the roll support portion 61. As shown in FIG. 1, the relay pin 65 is also accommodated inside the through-hole 62d of the roll support portion 62 and the through-hole 42b of the support plate 42.

[0035] The housing 30A of the anvil roll 3 is placed on the roll support portion 61 of the movable frame 4. The housing 30B of the anvil roll 3 is placed on the roll support portion 62.

[0036] Each of the housings 30A and 30B has two positioning holes 32 that are open to the lower surface of the housing 30A or 30B and extend upward.

[0037] The housing 30A is placed on the base portion 61a of the roll support portion 61. Each of the two positioning pins 61c of the roll support portion 61 is inserted into one of the two positioning holes 32 of the housing 30A. The four support claws 61b of the roll support portion 61 interpose and support the housing 30A in the axial direction. The movement of the housing 30A in the axial direction is restricted by the four support claws 61b. In addition, the movement of the housing 30A in the horizontal direction orthogonal to the axial direction is also restricted by the positioning pin 61c.

[0038] Similarly, the housing 30B is also placed on the roll support portion 62 in a state of being positioned in the axial direction and the horizontal direction orthogonal to the axial direction.

[0039] The movable frame 4 is accommodated at the lower portion of the body frame 5 during the operation of the rotary die unit 1. The roll support portion 61 of the movable frame 4 is disposed between the columns 51a and 51b of the first vertical frame portion 51. The roll support portion 62 is disposed between the columns 52a and 52b of the second vertical frame portion 52. Plate-shaped stoppers 71 and 72 are fixed to both sides of the support plate 42 of the movable frame 4. The stopper 71 is screwed to the columns 51a and 51b. The stopper 72 is screwed to the columns 52a and 52b. The movable frame 4 is fixed in the axial direction by the stoppers 71 and 72.

[0040] In a state where the movable frame 4 is fixed by the stoppers 71 and 72, the roll support portion 61 is disposed on a plunger 16A of the first cylinder 6A. In addition, the roll support portion 62 is disposed on a plunger 16B of the second cylinder 6B. By operating the first cylinder 6A and the second cylinder 6B, the relay pin 65 can be pushed upward by the plunger 16A and the plunger 16B. As a result, the anvil roll 3 can be moved upward, and the anvil roll 3 and the die-cut roll 2 can be brought into contact with each other.

[0041] By detaching the stopper 71, the movable frame 4 is in a state of being movable horizontally. By gripping and pulling the handle 45 of the movable frame 4, the operator can pull out the movable frame 4 to the outside of the body frame 5 and take out the anvil roll 3 from the body frame 5. In order to insert the anvil roll 3 into and remove the anvil roll 3 from the body frame 5 by the movable frame 4, the diameter of the processing portion 3A of the anvil roll 3 needs to be smaller than the interval between the columns 51a and 51b.

[0042] In the rotary die unit 1 of the present embodiment, the die-cut roll 2 and the anvil roll 3 can be taken out from the body frame 5 and replaced without detaching the body frame 5 from the equipment. Hereinafter, the description will be made with reference to FIGS. 6A to 6E.

[0043] In the rotary die unit 1, in order to detach the die-cut roll 2 and the anvil roll 3, first, the stopper 71 (see FIG. 3) fixing the movable frame 4 is detached. Thereafter, as shown in FIG. 6A, the movable frame 4 is pulled out to the outside of the body frame 5. In this way, the anvil roll 3 can be taken out together with the movable frame 4.

[0044] Next, as shown in FIG. 6B, the anvil roll 3 pulled out to the outside of the body frame 5 is detached from the movable frame 4. In this case, in a case where only the anvil roll 3 is to be replaced, a new anvil roll 3 may be placed on the movable frame 4, and the movable frame 4 may be returned to the body frame 5.

[0045] In a case where the die-cut roll 2 is to be detached after the detachment work of the anvil roll 3, a jig 100 for detaching the die-cut roll 2 is installed on the movable frame 4 from which the anvil roll 3 is removed. Specifically, the jig 100 is installed on each of the roll support portions 61 and 62 of the movable frame 4.

[0046] Here, FIG. 7 is a perspective view showing the jig 100.

[0047] The jig 100 is a plate-like member having an outer shape of a substantially rectangular frame shape. The jig 100 has a through-hole 100a that penetrates a central portion of the jig 100 in a thickness direction and a recessed portion 100b that is recessed downward from an upper surface of the jig 100. The jig 100 has a beam portion 101 that extends in a horizontal direction between the through-hole 100a and the recessed portion 100b. The jig 100 has two protruding portions 102 that protrude upward from the bottom surface of the recessed portion 100b on both sides of the recessed portion 100b. A positioning pin 100c protruding upward is provided on each of upper surfaces of the two protruding portions 102. The jig 100 has two positioning holes 100d that are recessed upward from the bottom surface of the jig 100.

[0048] The thickness of the jig 100 is the same as the thickness of the lower portion of the housings 30A and 30B. As shown in FIG. 6B, the jig 100 is placed on the roll support portions 61 and 62. In the roll support portion 61, the jig 100 is installed on the upper surface of the base portion 61a. The two positioning pins 61c are inserted into two positioning holes 100d of the bottom surface of the jig 100. The four support claws 61b support a side surface of the jig 100 facing the axial direction. Even in the roll support portion 62, the jig 100 is placed in the same state of being positioned.

[0049] After the jig 100 is placed on the movable frame 4, the movable frame 4 is pushed into the body frame 5 as shown in FIG. 6C. The roll support portion 61 of the movable frame 4 is disposed at a position aligned with the first vertical frame portion 51 in the axial direction, and the roll support portion 62 is disposed at a position aligned with the second vertical frame portion 52. As a result, the jig 100 is disposed directly below each of the housings 20A and 20B of the die-cut roll 2.

[0050] Next, the die-cut roll 2 is moved downward by loosening the screws fixing the die-cut roll 2 to the top plate portion 55. As a result, the housings 20A and 20B of the die-cut roll 2 are placed on the upper surface of the jig 100. In the housings 20A and 20B, a positioning hole 22 is formed at each of two locations on the bottom surfaces (see FIG. 1). The positioning pins 100c on the upper surface of the jig 100 are inserted into the positioning holes 22 of the housings 20A and 20B. In this way, the movement of the die-cut roll 2 on the jig 100 is suppressed.

[0051] After the die-cut roll 2 is placed on the jig 100, screws fixing the housings 20A and 20B to the top plate portion 55 are removed, and the die-cut roll 2 is made to a state of being movable in the axial direction.

[0052] Next, as shown in FIG. 6D, the movable frame 4 is pulled out to the outside of the body frame 5. In this way, the die-cut roll 2 supported by the movable frame 4 can be taken out to the outside of the body frame 5. As shown in FIG. 6E, the die-cut roll 2 taken out to the outside of the body frame 5 can be lifted upward and detached from the jig 100.

[0053] In a case where the die-cut roll 2 is to be replaced, a new die-cut roll 2 is placed on the jig 100, and the movable frame 4 is returned to the body frame 5. Thereafter, the housing 20A and 20B are screwed to the top plate portion 55. In this way, the replacement work of the die-cut roll 2 is completed.

[0054] As described above, according to the rotary die unit 1 of the present embodiment, both the anvil roll 3 and the die-cut roll 2 can be efficiently replaced by using the movable frame 4 and the jig 100.

[0055] In particular, in the present embodiment, the die-cut roll 2 located at the upper portion of the body frame 5 can be moved horizontally in the axial direction and can be inserted into and removed from the body frame 5 almost without being moved in the height direction. Since it is not necessary to use a hanging device or the like that supports the die-cut roll 2, the roll replacement is extremely easy.(Modification Example 1)

[0056] In the above-described embodiment, a configuration in which the die-cut roll 2 is taken out using the jig 100 that is a separate body from the rotary die unit 1 is adopted, but the jig 100 may be connected to the movable frame 4. For example, as shown in FIG. 8, a configuration in which the jig 100 and the base portion 61a of the roll support portion 61 are connected to each other via a hinge 105 may be adopted.

[0057] According to the configuration shown in FIG. 8, it is possible to switch between a state where the jig 100 is placed on the base portion 61a and a state where the jig 100 is located on the side of the base portion 61a by moving the jig 100 rotationally around the axis of the hinge 105. Therefore, in a case where the jig 100 is not used, the jig 100 can be disposed to be laid down, and the housings 30A and 30B of the anvil roll 3 can be disposed on the roll support portion 61. In a case of detaching or attaching the die-cut roll 2, the jig 100 can be raised and disposed on the base portion 61a, and the housings 20A and 20B of the die-cut roll 2 can be disposed on the jig 100.(Modification Example 2)

[0058] In the above-described embodiment, a case where the anvil roll 3 and the die-cut roll 2 are taken out one by one using the movable frame 4 and the jig 100 has been described, but a configuration in which the anvil roll 3 and the die-cut roll 2 are taken out at the same time can also be adopted.

[0059] For example, as shown in FIG. 1, two support blocks 132 may be installed between an upper surface of the housing 30B of the anvil roll 3 and a lower surface of the housing 20B of the die-cut roll 2. The number of support blocks 132 may be one. The support block 132 may be fixed to the housings 20A and 20B of the die-cut roll 2 or may be fixed to the housings 30A and 30B of the anvil roll 3. The support block 132 may be configured to be detachable. A configuration in which the support block 132 is connected to the housings 30A and 30B or the housings 20A and 20B via a joint mechanism such as a hinge, a ball, or a T-bar, and the position of the support block 132 is movable may be adopted.

[0060] As shown in FIG. 1, the die-cut roll 2 can be placed on the housings 30A and 30B of the anvil roll 3 by detaching screws fixing the housings 20A and 20B to the top plate portion 55 in a state where the support block 132 is provided. As a result, the movable frame 4 is in a state where both the anvil roll 3 and the die-cut roll 2 are supported. In this state, by pulling out the movable frame 4 to the outside of the body frame 5, both the anvil roll 3 and the die-cut roll 2 can be taken out to the outside of the body frame 5. According to this modification example, the roll can be further easily replaced.(Modification Example 3)

[0061] FIG. 9 is a view showing Modification Example 3 of the rotary die unit 1. In the rotary die unit 1 of Modification Example 3, the anvil roll 3 has a housing 130A.

[0062] In addition, the movable frame 4 has a base body 41, a support plate 42, and a U-shaped support block 131 as viewed from the axial direction. The support block 131 is fixed to both end portions of the support plate 42 in the axial direction. The housing 130A is supported by a recessed portion 131c of the support block 131.

[0063] FIG. 9 shows only the configuration on one side in the axial direction, but the configuration on the side surface opposite to the side surface shown in FIG. 9 is the same as the configuration shown in FIG. 9.

[0064] The housing 130A is a rectangular plate-like member as viewed from the axial direction. The housing 130A has a shorter length in the vertical direction and the lateral direction as viewed from the axial direction than the housing 30A shown in FIG. 1. A recessed groove 130a is formed on each of two side surfaces of the housing 130A that face a horizontal direction orthogonal to the axial direction. The recessed groove 130a extends downward from a central portion of the housing 130A in the height direction. The recessed groove 130a is open to the lower surface and the side surface of the housing 130A.

[0065] The support block 131 has a base portion 131a that extends in the horizontal direction as viewed from the axial direction, and two arm portions 131b that extend upward from both end portions of the base portion 131a in the length direction. The support block 131 has the base portion 131a and a recessed portion 131c surrounded by the two arm portions 131b. A positioning pin 131d protruding toward the inside of the recessed portion 131c is provided on each of surfaces of the two arm portions 131b on the recessed portion 131c side. A through-hole 131e that penetrates the base portion 131a in the up-down direction is provided at a central portion of the base portion 131a in the length direction. The relay pin 65 is disposed in the through-hole 131e.

[0066] The housing 130A is inserted into the recessed portion 131c of the support block 131 from above. The positioning pin 131d of the support block 131 is inserted into the recessed groove 130a of the housing 130A. The movement of the housing 130Ain the axial direction with respect to the support block 131 is restricted by the recessed groove 130a and the positioning pin 131d. The plunger 16A of the first cylinder 6A pushes the relay pin 65 from below. In this way, the housing 130A is lifted upward by the relay pin 65, and the processing portion 3A of the anvil roll 3 is brought into contact with the processing portion 2A of the die-cut roll 2.

[0067] The two arm portions 131b of the support block 131 protrude upward from the upper surface of the housing 130A of the anvil roll 3. The upper surface of the arm portion 131b is disposed in the vicinity of the housing 20A of the die-cut roll 2.

[0068] In the rotary die unit 1 of Modification Example 3 having the above-described configuration, the housing 20A can be placed on the support block 131 of the movable frame 4 by detaching the screws fixing the housing 20A of the die-cut roll 2 to the top plate portion 55. By pulling out the movable frame 4 to the outside of the body frame 5 in a state where the housing 20A is placed on the support block 131, the movable frame 4 in a state of supporting both the anvil roll 3 and the die-cut roll 2 can be pulled out to the outside of the body frame 5.

[0069] Both the anvil roll 3 and the die-cut roll 2 can be easily taken out to the outside of the body frame 5. After the die-cut roll 2 is removed from the pulled-out movable frame 4, the anvil roll 3 is detached from the recessed portion 131c of the support block 131. In this way, the two rolls can be detached from the unit. Thereafter, the new anvil roll 3 and the new die-cut roll 2 are placed on the movable frame 4, and the movable frame 4 is returned to the body frame 5. In this way, the two rolls can be efficiently replaced.

[0070] In the above description, a case where the anvil roll 3 and the die-cut roll 2 are inserted and removed at the same time has been described, but the anvil roll 3 and the die-cut roll 2 can also be taken out one by one to the outside of the body frame 5.

[0071] In the rotary die unit 1 of Modification Example 3, since the upper surface of the arm portion 131b of the support block 131 is disposed in the vicinity of the lower surface of the housing 20A of the die-cut roll 2, the amount of movement of the die-cut roll 2 downward is extremely small in a case where the die-cut roll 2 is placed on the movable frame 4. A hanging device or the like that supports the die-cut roll 2 is not necessary, and the roll can be easily replaced.

[0072] Positioning pins that protrude upward from the upper surfaces of the two arm portions 131b of the support block 131 may be provided on the upper surfaces. That is, a positioning mechanism may be provided in the support block 131. The positioning pin of the arm portion 131b is inserted into the positioning hole 22 (see FIG. 1) of the housing 20A. In this way, the movement of the die-cut roll 2 on the support block 131 can be suppressed.(Modification Example 4)

[0073] The positioning mechanism between the housing and the roll support portion according to the embodiment and the positioning mechanism between the housing and the support block according to Modification Example 3 are not limited to the configurations described above.

[0074] In the configuration of the roll support portion 61 shown in FIGS. 4, 5 and the like, the housing 30A is positioned by using the four support claws 61b and the positioning pin 61c on the base portion 61a. As another positioning mechanism, a configuration shown in FIG. 10 can be used. Hereinafter, the roll support portion 61 will be described as an example, but the roll support portion 62 can also have the same configuration.

[0075] In a configuration of the example shown in FIG. 10(A), the six support claws 61b are provided around the base portion 61a of the roll support portion 61, while the positioning pin 61c is not provided. In addition to the four support claws 61b shown in FIG. 5, the support claws 61b are also disposed on two short sides of the base portion 61a. The movement of the base portion 61a of the housing 30Ain the longitudinal direction is restricted by the support claws 61b provided on the two short sides of the base portion 61a.

[0076] In the example shown in FIG. 10(B), a positioning mechanism in which a protruding ridge 61e tapered in a cross-section extending in the axial direction is provided on the upper surface of the base portion 61a of the roll support portion 61 and a recessed groove 30a tapered in a cross-section is provided on the lower surface of the housing 30A is provided. By engaging the protruding ridge 61e with the recessed groove 30a, the movement of the base portion 61a of the housing 30A in the longitudinal direction is restricted. The protruding ridge 61e and the recessed groove 30a have a longitudinal shape in one direction extending along the short side direction of the base portion 61a. The protruding ridge 61e is disposed between the two support claws 61b facing each other in the axial direction.

[0077] Next, in the configuration shown in FIG. 9, the recessed groove 130a and the positioning pin 131d are engaged with each other as a positioning mechanism between the housing 130A and the support block 131. As another positioning mechanism, a configuration shown in FIG. 11 can be used.

[0078] The example shown in FIG. 11(A) is a positioning mechanism that engages two positioning pins 131f provided on the upper surface of the base portion 131a of the support block 131 with the positioning holes 130b provided on the lower surface of the housing 130A. The positioning pin 131f and the positioning hole 130b are engaged with each other. In this way, the movement of the housing 130Ain the axial direction is restricted.

[0079] The example shown in FIG. 11(B) is a positioning mechanism that engages a protruding ridge 131g tapered in a cross-section provided on the upper surface of the base portion 131a of the support block 131 with a recessed groove 130c tapered in a cross-section provided on the lower surface of the housing 130A. The protruding ridge 131g and the recessed groove 130c have a longitudinal shape in one direction extending in the length direction of the base portion 131a. The protruding ridge 131g and the recessed groove 130c are engaged with each other. In this way, the movement of the housing 130A in the axial direction is restricted.

[0080] The configurations of the above-described embodiment and each of the modification examples can be appropriately combined without contradiction.REFERENCE SIGNS LIST

[0081] 1 Rotary die unit 2 Die-cut roll (first roll) 2B, 2C, 3B, 3C Support shaft portion 3 Anvil roll (second roll) 4 Movable frame 5 Body frame 20A, 20B, 30A, 30B, 130AHousing 21, 31 Bearing 50 Base 51 First vertical frame portion 51a, 51b, 52a, 52b Column 52 Second vertical frame portion 60A, 60B Slide rail 61, 62 Roll support portion 100 Jig 100b, 131c recessed portion 105 Hinge 131, 132 Support block

Claims

1. A rotary die unit comprising: a body frame having a base, and a first vertical frame portion and a second vertical frame portion that extend upward from the base; a first roll that is supported by the first vertical frame portion and the second vertical frame portion via bearings; a movable frame that is located at a lower portion of the body frame and is movable relative to the body frame along an axial direction of the first roll; and a second roll that is supported by the movable frame via bearings, wherein the first vertical frame portion has two columns extending in an up-down direction, the second roll is insertable and removable through a space between the two columns by moving the movable frame in an axial direction of the second roll in a state where the second roll is supported, and the first roll is insertable and removable through a space between the two columns by moving the movable frame in the axial direction of the first roll in a state where the first roll is supported directly or via another member.

2. The rotary die unit according to Claim 1, wherein a plate-shaped housing that extends in a radial direction of the first roll is mounted on each of support shaft portions at both ends of the first roll via the bearings, a plate-shaped housing that extends in a radial direction of the second roll is mounted on each of support shaft portions at both ends of the second roll via the bearings, the movable frame has two roll support portions each supporting the housing of the first roll or the second roll from below, and the rotary die unit further comprises a jig that is placed on the roll support portion and supports the first roll from below.

3. The rotary die unit according to Claim 2, wherein the jig and the roll support portion are connected to each other via a hinge.

4. The rotary die unit according to Claim 1 or 2, wherein the roll support portion, the housing, and the jig are provided with an engagement mechanism that suppresses movement of the housing or the jig in an axial direction with respect to the roll support portion.

5. The rotary die unit according to Claim 1, wherein a plate-shaped housing that extends in a radial direction of the first roll is mounted on each of support shaft portions at both ends of the first roll via the bearings, a plate-shaped housing that extends in a radial direction of the second roll is mounted on each of support shaft portions at both ends of the second roll via the bearings, the movable frame has U-shaped support blocks at both end portions of the movable frame as viewed from an axial direction, and the housing mounted on the second roll is supported by a recessed portion of the U-shaped support block.

6. The rotary die unit according to Claim 5, wherein the roll support portion and the support block are provided with a positioning mechanism that suppresses movement of the support block in an axial direction with respect to the roll support portion.

7. The rotary die unit according to Claim 1 or 2, wherein the movable frame is connected to the body frame via a slide rail.

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