JP2019030928A - Rotary die cutter - Google Patents

Abstract

To provide a rotary die cutter excellent in workability, which enables individual removal of two rolls.SOLUTION: A rotary die cutter 1 includes: a body frame 5 that has a base, and a first vertical frame part 51 and a second vertical frame part, extended upward from the base; a first roll 2 that is supported via a bearing 21 by the first and second vertical frame parts; a movable frame 4 that has a bottom wall part, and a first side wall part 41 and a second side wall part, extended upward from the bottom wall part; and a second roll 3 that is supported via a bearing by the first and second side wall parts. The movable frame 4 can be attached to/detached from the top of the base of the body frame.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rotary die cutter.

  There is known a rotary die cutter that continuously cuts a sheet-like workpiece by a die-cut roll and an anvil roll that are rotatably supported by a frame having a support via a bearing (see Patent Document 1).

JP 2007-268650 A

  In a conventional rotary die cutter, an anvil roll and a die cut roll are attached to the support column of the frame in a stacked manner. Therefore, when removing the lower roll, it is necessary to remove both the die-cut roll and the anvil roll, and the work is complicated.

  An object of one embodiment of the present invention is to provide a rotary die cutter excellent in workability capable of individually removing two rolls.

  A main body frame having a base, a first vertical frame portion and a second vertical frame portion extending upward from the base, and supported by a bearing on the first vertical frame portion and the second vertical frame portion. A movable frame having a first roll, a bottom wall portion, a first side wall portion and a second side wall portion extending upward from the bottom wall portion, and a bearing on the first side wall portion and the second side wall portion via a bearing. A rotary die cutter, wherein the movable frame is detachable on the base of the main body frame in a state of supporting the second roll.

  According to this configuration, by including the movable frame that supports the second roll, only the movable frame that supports the second roll can be removed separately from the main body frame that supports the first roll. Thereby, it becomes possible to replace the first roll and the second roll without removing both the first roll and the second roll, and the workability is improved.

The first roll may be a die cut roll, and the second roll may be an anvil roll.
The die cut roll may have a cutting edge only in a region on one side from the center in the axial direction.
The main body frame has a side surface through-hole penetrating the first vertical frame portion or the second vertical frame portion in the axial direction of the first roll, and the movable frame is inserted into the base frame through the side surface through-hole. It is good also as a structure which can be inserted / removed with respect to a stand.
The movable frame may have a rotation mechanism installed on the bottom surface of the bottom wall portion.
A first bearing holding portion and a second bearing holding portion for holding the bearing for supporting the second roll; and the movable frame opens at respective upper ends of the first side wall portion and the second side wall portion. The first concave portion and the second concave portion have a first concave portion and a second concave portion, and the first bearing holding portion and the second bearing holding portion may be fitted in the first concave portion and the second concave portion so as to be movable in the vertical direction. Good.
The main body frame has a roll moving mechanism that moves the second roll in a vertical direction, and the roll moving mechanism pushes the movable frame or the first bearing holding portion and the second bearing holding portion. It is good also as a structure which moves the said 2nd roll by.
The main body frame includes a first roll moving mechanism that pushes the first bearing holding portion, and a second roll moving mechanism that pushes the second bearing holding portion, and the movable frame extends from the bottom surface of the movable frame. A first through hole and a second through hole that respectively reach the bottom surfaces of the first bearing holding part and the second bearing holding part, and the first roll moving mechanism is directly or through the first through hole; The first bearing holding part may be pushed via the second through-hole, and the second roll moving mechanism may push the second bearing holding part directly or via another member.

  According to one embodiment of the present invention, a rotary die cutter that can remove two rolls individually and has excellent workability is provided.

FIG. 1 is a side view of the rotary die cutter of the embodiment. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is an operation explanatory view of the rotary die cutter.

  FIG. 1 is a side view of the rotary die cutter of the present embodiment. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is an operation explanatory view of the rotary die cutter.

  A rotary die cutter 1 according to this embodiment includes a die cut roll (first roll) 2, an anvil roll (second roll) 3, a movable frame 4, a main body frame 5, and a first hydraulic cylinder (first roll moving mechanism). ) 6A, and a second hydraulic cylinder (second roll moving mechanism) 6B.

  The die cut roll 2 is a multistage cylindrical member centered on the axis L2. The die-cut roll 2 has a large-diameter processed portion 2A at the central portion in the axial direction, and has small-diameter support shaft portions 2B and 2C extending from the processed portion 2A to both sides in the axial direction. The die cut roll 2 has annular bearer portions 2D and 2E projecting radially outward from the outer peripheral surface of the processed portion 2A at both axial ends of the processed portion 2A.

  In the die-cut roll 2, the inner peripheral portion of the processed portion 2A and the support shaft portions 2B, 2C are a single member made of steel or the like, and the outer peripheral portion of the processed portion 2A is made of cemented carbide or the like harder than the steel material. A cylindrical member is fitted. In the case of this embodiment, two cylindrical members 12a and 12b are arranged side by side in the axial direction between the bearer portions 2D and 2E. The cylindrical member 12a has a cutting edge 2a and is a cylindrical member made of cemented carbide or the like. The cylindrical member 12b is a cylindrical member that does not have a cutting edge. The cylindrical member 12b is made of steel or cemented carbide. The outer diameters and the axial lengths of the cylindrical members 12a and 12b are the same. Therefore, the die cut roll 2 of this embodiment has the cutting blade 2a only on one side from the center in the axial direction.

  The die cut roll 2 is installed on the main body frame 5 with the axis L2 being horizontal. The processed part 2 </ b> A of the die cut roll 2 is arranged at the center part in the longitudinal direction of the main body frame 5. The support shaft portion 2C of the die cut roll 2 is connected to a rotation drive unit (not shown).

  The bearing holding portions 20 </ b> A and 20 </ b> B are connected to the support shaft portions 2 </ b> B and 2 </ b> C of the die cut roll 2. The bearing holding portions 20A and 20B are substantially prismatic frame-like members having circular through holes, and hold the bearings 21 made of ball bearings on the inner peripheral portions, respectively. The support shaft portions 2B and 2C are inserted into the inner ring of the bearing 21.

  The main body frame 5 includes a base 50 having a rectangular shape in plan view, a first vertical frame portion 51 and a second vertical frame portion 52 extending upward from both longitudinal ends of the base 50, and an upper end of the first vertical frame portion 51. And a top plate portion 55 spanned between the upper end of the second vertical frame portion 52.

  The base 50 has a flat plate portion 50a and two leg portions 50b fixed to the bottom surface of the flat plate portion 50a. The two leg portions 50b are rod-shaped members arranged along the long side of the flat plate portion 50a, and the leg portions 50b are arranged with a space in the short side direction of the flat plate portion 50a.

  The flat plate portion 50a has through holes 50c and 50d penetrating the flat plate portion 50a in the thickness direction at both ends of the bottom surface in the longitudinal direction. The first hydraulic cylinder 6A and the second hydraulic cylinder 6B are fixed at positions where the through holes 50c and 50d are closed from the bottom surface side.

The first hydraulic cylinder 6A includes a housing 61A that is fixed to the flat plate portion 50a, and a plunger 62A that protrudes upward from the housing 61A and moves in the vertical direction. The second hydraulic cylinder 6B includes a casing 61B fixed to the flat plate portion 50a, and a plunger 62B that protrudes upward from the casing 61B and moves in the vertical direction.
The plungers 62A and 62B are inserted into the through holes 50c and 50d of the flat plate portion 50a. The plungers 62A and 62B are entirely accommodated in the through holes 50c and 50d at the lower position, and protrude upward from the upper surface of the flat plate portion 50a at the upper position.

  The first vertical frame portion 51 is provided at the central portion in the height direction of the two support columns 51a and 51b and the two support columns 51a and 51b that are set up at two corners located on the short side of the flat plate portion 50a. And a beam portion 51c spanned. Although a part of the second vertical frame portion 52 is not illustrated, the second vertical frame portion 52 has the same configuration as the first vertical frame portion 51. FIG. 2 and FIG. 3 show a support column 52a and a beam portion 52c among the constituent members of the second vertical frame portion 52.

  The bearing holding portions 20 </ b> A and 20 </ b> B are fitted and fixed to the upper portions of the first vertical frame portion 51 and the second vertical frame portion 52. As shown in FIG. 1, the bearing holding portion 20 </ b> A has fitting grooves 22 and 23 that extend in the vertical direction on the side surfaces facing the columns 51 a and 51 b. 20 A of bearing holding parts are inserted between support | pillar 51a, 51b from the upper side of support | pillar 51a, 51b in the state from which the top-plate part 55 was removed. Thereby, the fitting groove 22 and the support column 51a of the bearing holding portion 20A are fitted, and the fitting groove 23 and the support column 51b are fitted. The bottom surface of the bearing holding portion 20A is supported by the beam portion 51c.

In the present embodiment, the bearing holding portion 20A is bolted to the top plate portion 55 via a rectangular parallelepiped spacer 24 installed on the upper surface. The bearing holding portion 20B opposite to the bearing holding portion 20A is also fitted and fixed on the beam portion 52c of the second vertical frame portion 52, similarly to the bearing holding portion 20A.
The die cut roll 2 supported by the bearing holding portions 20 </ b> A and 20 </ b> B 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 main body frame 5.

  As shown in FIGS. 1 and 2, the first vertical frame portion 51 has a side surface through-hole 51 d through which the movable frame 4 can pass, below the beam portion 51 c. As shown in FIG. 2, the second vertical frame portion 52 has a side surface through hole 52 d through which the movable frame 4 can pass, below the beam portion 52 c.

  The anvil roll 3 is a multistage cylindrical member centered on the axis L3. The anvil roll 3 has a large-diameter processed portion 3A at the axial center, and has a support shaft portion 3B and a support shaft portion 3C extending from the processed portion 3A to both sides in the axial direction. The anvil roll 3 is installed on the movable frame 4 with the axis L3 being horizontal. The processed portion 3 </ b> A of the anvil roll 3 is disposed in the center portion in the longitudinal direction of the movable frame 4.

  Bearing support portions 30 </ b> A and 30 </ b> B are connected to the support shaft portions 3 </ b> B and 3 </ b> C of the anvil roll 3. The bearing holding portions 30A and 30B are substantially prismatic frame-like members having circular through-holes, and hold the bearings 31 formed of ball bearings on the inner peripheral portions, respectively. The support shaft portions 3B and 3C are inserted into the inner ring of the bearing 31.

  The movable frame 4 includes a rectangular flat bottom wall portion 40 disposed on the flat plate portion 50a of the base 50, and a plate-like first side wall portion that extends upward from both ends in the longitudinal direction of the bottom wall portion 40. 41 and the second side wall portion 42, and a rotation mechanism 45 installed on the bottom surface of the bottom wall portion 40.

  The rotation mechanism 45 includes a shaft member 46 fixed to the bottom surface of the bottom wall portion 40, a pedestal portion 47, and a bearing 48. The pedestal portion 47 has a through hole 47a into which the shaft member 46 is inserted and a countersink portion 47b located at the upper opening of the through hole 47a at the center portion in plan view. The pedestal 47 has a through hole 47c into which the plunger 62A of the first hydraulic cylinder 6A is inserted and a through hole 47d into which the plunger 62B of the second hydraulic cylinder 6B is inserted at both ends in the longitudinal direction.

  The bearing 48 is a thrust cylindrical roller bearing and is accommodated in the counterbore 47b. The shaft member 46 is inserted into the inner ring of the bearing 48 and the through hole 47a. The bearing 48 supports the bottom surface of the bottom wall portion 40. The bottom wall portion 40 is horizontally rotatable around the axis of the shaft member 46 on the rotation mechanism 45.

  The 1st side wall part 41 is flat form which has thickness equivalent to support | pillar 51a, 51b, and as shown in FIG. 1, it has the 1st recessed part 41a opened to an upper end. The first side wall portion 41 has a first through hole 41 b that reaches the bottom surface of the first recess 41 a from the lower surface of the bottom wall portion 40. A cylindrical relay pin 43A is accommodated in the first through hole 41b so as to be movable up and down. The relay pin 43A has a disk-like flange at the upper end. The flange portion of the relay pin 43A is hooked on the bottom surface of the first recess 41a and prevents the relay pin 43A from dropping off.

  The second side wall portion 42 has the same shape as the first side wall portion 41, and has a second concave portion 42a that opens to the upper end, and a second through hole 42b that reaches the bottom surface of the second concave portion 42a from the bottom surface of the bottom wall portion 40. And have. The relay pin 43B is accommodated in the second through hole 42b so as to be movable up and down.

The bearing holding portion 30A and the bearing holding portion 30B are fitted into the first recess 41a and the second recess 42a. As shown in FIG. 1, the bearing holding portion 30 </ b> A has fitting grooves 32 and 33 that extend in the vertical direction on the side surface facing the horizontal direction orthogonal to the axis L <b> 3. 30 A of bearing holding parts are inserted below from the opening part of the 1st recessed part 41a, and the fitting grooves 32 and 33 of 30 A of bearing holding parts and the side wall part of the 1st recessed part 41a are fitted. The bottom surface of the bearing holding portion 30A is in contact with the upper end surface of the relay pin 43A. The bearing holding portion 30B is fitted into the second recess 42a in the same manner as the bearing holding portion 30A. The bottom surface of the bearing holding portion 30B is in contact with the upper end surface of the relay pin 43B.
The bearing holding portions 30A and 30B are movable in the vertical direction within the first concave portion 41a and the second concave portion 42a.

  The anvil roll 3 supported by the bearing holding portions 30 </ b> A and 30 </ b> B via the bearing 31 is supported in a horizontal posture between the first side wall portion 41 and the second side wall portion 42 of the movable frame 4. The movable frame 4 is disposed on the flat plate portion 50a of the base 50 in a state where the anvil roll 3 is supported.

  The movable frame 4 is disposed at a predetermined position on the base 50 of the main body frame 5 while supporting the anvil roll 3. Specifically, the movable frame 4 is disposed at a position where the through holes 47 c and 47 d of the pedestal portion 47 are respectively connected to the through holes 50 c and 50 d of the base 50. In the movable frame 4, the pedestal portion 47 and the bottom wall portion 40 are configured such that the through hole 47 c of the pedestal portion 47 is connected to the first through hole 41 b of the first side wall portion 41, and the through hole 47 d is connected to the second side wall portion 42. It arrange | positions in the position connected with the 2nd through-hole 42b.

  In the state where the through holes 50c and 47c and the first through hole 41b are connected and the through holes 50d and 47d and the second through hole 42b are connected as described above, the plunger 62A of the first hydraulic cylinder 6A and the plunger of the second hydraulic cylinder 6B 62B advances to the upper side. The plunger 62A pushes the relay pin 43A upward through the through hole 47c and the first through hole 41b. The plunger 62B pushes the relay pin 43B upward through the through hole 47d and the second through hole 42b.

  Accordingly, as shown in FIGS. 1 and 2, the relay pins 43A and 43B protrude upward from the bottom surface of the first recess 41a and the bottom surface of the second recess 42a, and move the bearing holding portions 30A and 30B upward. As a result, the anvil roll 3 moves upward and contacts the die cut roll 2.

  As shown in FIG. 2, the rotary die cutter 1 is in a state where the bearer portions 2 </ b> D and 2 </ b> E of the die cut roll 2 and both end portions of the processed portion 3 </ b> A of the anvil roll 3 are in contact with each other. In this state, the die-cut roll 2 is rotated by the rotation drive unit, and the anvil roll 3 in contact with the bearer units 2D and 2E is rotated. A strip-shaped workpiece is passed between the rotating die-cut roll 2 and the anvil roll 3, and the workpiece is cut out by the cutting blade 2a.

In the rotary die cutter 1 of this embodiment, as shown in FIG. 3, only the movable frame 4 can be slid and extracted from the main body frame 5. In order to extract the movable frame 4, first, the plunger 62A of the first hydraulic cylinder 6A and the plunger 62B of the second hydraulic cylinder 6B are retracted downward. Thereby, the anvil roll 3 is moved downward and does not come into contact with the die cut roll 2.
The plungers 62A and 62B are accommodated in the through holes 50c and 50d of the base 50. Thereby, engagement with plunger 62A, 62B and the movable frame 4 is cancelled | released, and the movable frame 4 becomes movable in a horizontal direction.

  When the movable frame 4 is extracted, a drawer table TB is installed on the side of the main body frame 5 as shown in FIG. The movable frame 4 that supports the anvil roll 3 can be extracted onto the drawer table TB through the side surface through hole 51 d of the main body frame 5. Since the bearing holding portions 30A and 30B that support the anvil roll 3 are merely inserted into the first concave portion 41a and the second concave portion 42a of the movable frame 4 from above, the operator holds the bearing holding portions 30A and 30B. The anvil roll 3 can be removed from the movable frame 4 simply by lifting it upward.

  Therefore, according to the rotary die cutter 1 of this embodiment, only the anvil roll 3 can be removed without removing the die cut roll 2 from the main body frame 5, and the anvil roll 3 can be easily replaced. Moreover, since the die cut roll 2 is not removed, the state of the die cut roll 2 can be maintained, and the position adjustment when the anvil roll 3 is attached again can be simplified.

  In the present embodiment, the movable frame 4 includes a rotation mechanism 45. Thereby, in the state where the movable frame 4 shown in FIG. 3 is extracted from the main body frame 5, it is possible to rotate the bottom wall portion 40 horizontally with respect to the pedestal portion 47 and to reverse the direction of the anvil roll 3.

  When the cutting blade 2a of the die-cut roll 2 is arranged so as to be biased to the half area on the one side in the axial direction as in this embodiment, the contact area of the anvil roll 3 with the cutting edge 2a is also half on the one side in the axial direction. Biased. The anvil roll 3 is damaged by use of the processed part 3A, and maintenance is required after a certain amount of use. In the present embodiment, only one half of the processed portion 3A is damaged and the remaining half is not used. Therefore, the anvil roll 3 can be used without maintenance simply by reversing it in the axial direction. In this respect, in the rotary die cutter 1 of the present embodiment, the reversing operation of the anvil roll 3 can be performed without removing the anvil roll 3 from the movable frame 4 and is extremely excellent in workability.

  In the present embodiment, the relay pins 43A and 43B are interposed between the plungers 62A and 62B and the bearing holding portions 30A and 30B. However, the plungers 62A and 62B directly push the bearing holding portions 30A and 30B. It is good also as a structure. Alternatively, the plungers 62 </ b> A and 62 </ b> B may be configured to move the anvil roll 3 by pushing up the pedestal portion 47 or the bottom wall portion 40.

  In the present embodiment, the first hydraulic cylinder 6A and the second hydraulic cylinder 6B are configured to move the anvil roll 3 up and down, but may be configured to include a roll moving mechanism that moves the die cut roll 2 up and down. Specifically, a hydraulic cylinder may be installed on the top plate portion 55, and the bearing holding portions 20A and 20B that support the die cut roll 2 may be connected to the plunger of the hydraulic cylinder. Furthermore, it is good also as a structure provided with the roll moving mechanism which moves the die-cut roll 2 and the anvil roll 3 each independently in an up-down direction.

  In the present embodiment, the die cut roll 2 is supported by the main body frame 5 and the anvil roll 3 is supported by the movable frame 4. However, the anvil roll 3 is supported by the main body frame 5 and the die cut roll 2 is supported by the movable frame 4. It is good also as a structure by which is supported.

  In the present embodiment, the cutting blade 2a is provided only on one half of the die cut roll 2 in the axial direction. However, in the die cut roll 2, the cutting edge 2a may be provided over the entire processing portion 2A. Thus, when there is no bias in the position of the cutting edge 2a, the anvil roll 3 does not need to be reversed. Therefore, the movable frame 4 may be configured without the rotation mechanism 45.

  The configurations of the above-described embodiments and modifications can be combined as appropriate within a consistent range.

  DESCRIPTION OF SYMBOLS 1 ... Rotary die cutter, 2 ... Die cut roll (1st roll), 3 ... Anvil roll (2nd roll), 4 ... Movable frame, 5 ... Main body frame, 6A ... 1st hydraulic cylinder (1st roll moving mechanism), 6B ... 2nd hydraulic cylinder (2nd roll moving mechanism), 20A, 20B, 30A, 30B ... Bearing holding part, 21, 31 ... Bearing, 40 ... Bottom wall part, 41 ... 1st side wall part, 41a ... 1st recessed part 41b ... first through hole, 42 ... second side wall, 42a ... second recess, 42b ... second through hole, 45 ... rotation mechanism, 47a, 47c, 47d, 50c, 50d ... through hole, 50 ... base 51 ... 1st vertical frame part, 51d, 52d ... Side surface through-hole, 52 ... 2nd vertical frame part

Claims (8)

A main body frame having a base, and a first vertical frame portion and a second vertical frame portion extending upward from the base;
A first roll supported by a bearing on the first vertical frame portion and the second vertical frame portion;
A movable frame having a bottom wall portion, a first side wall portion and a second side wall portion extending upward from the bottom wall portion;
A second roll supported by a bearing on the first side wall and the second side wall,
The movable frame is a rotary die cutter that can be attached to and detached from the base of the main body frame while supporting the second roll.   The rotary die cutter according to claim 1, wherein the first roll is a die cut roll and the second roll is an anvil roll.   The rotary die cutter according to claim 2, wherein the die cut roll has a cutting edge only in a region on one side from the center in the axial direction. The main body frame has a side through-hole penetrating the first vertical frame portion or the second vertical frame portion in the axial direction of the first roll,
The movable frame can be inserted into and removed from the base through the side surface through hole.
The rotary die cutter of any one of Claim 1 to 3.   The rotary die cutter according to any one of claims 1 to 4, wherein the movable frame has a rotation mechanism installed on a bottom surface of the bottom wall portion. Having a first bearing holding part and a second bearing holding part for holding the bearing supporting the second roll;
The movable frame has a first concave portion and a second concave portion that open to upper ends of the first side wall portion and the second side wall portion,
The first bearing holding portion and the second bearing holding portion are fitted in the first concave portion and the second concave portion, respectively, in a state of being movable in the vertical direction.
The rotary die cutter of any one of Claim 1 to 5. The main body frame has a roll moving mechanism that moves the second roll in a vertical direction,
The rotary die cutter according to claim 6, wherein the roll moving mechanism moves the second roll by pushing the movable frame or the first bearing holding part and the second bearing holding part. The main body frame includes a first roll moving mechanism that pushes the first bearing holding portion, and a second roll moving mechanism that pushes the second bearing holding portion,
The movable frame has a first through hole and a second through hole that respectively reach the bottom surface of the first bearing holding portion and the second bearing holding portion from the bottom surface of the movable frame,
The first roll moving mechanism pushes the first bearing holding part directly or through another member through the first through hole,
The second roll moving mechanism pushes the second bearing holding part directly or through another member through the second through hole.
The rotary die cutter according to claim 6.

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