JP2011224707A - Cutting blade position adjusting jig and cutting blade position adjusting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting blade position adjusting jig by which a position of an upper blade relative to a lower blade can be easily and efficiently adjusted.SOLUTION: The cutting blade position adjusting jig 7 which is used to adjust positions of the upper blade 3 and the lower blade 4 in a direction orthogonal to a direction of a face of the lower blade 4 in a cutting machine which cuts an object to be cut by making a ventral portion 33 of the upper blade 3 contact a lower blade front edge 4a provided on one face of the lower blade 4 and which can be attached and released to and from the lower blade 4, has an outer periphery abut face 72 that can be abutted on an outer periphery face 41a of the lower blade 4, an abut convex portion 76 that protrudes from a part of the outer periphery abut face 72 and that can be abutted on the lower blade lower edge 4a of the lower blade 4, and a ventral portion abut face 73 that can be abutted on the ventral portion 33 of the upper blade 3.

Description

  The present invention relates to a cutting blade position adjusting jig for adjusting a relative position in a rotation axis direction of a first blade and a second blade in a cutting device, and a cutting blade position adjusting method using the same.

2. Description of the Related Art Conventionally, a cutting device that cuts a material to be cut such as paper by rotating at least one of a first blade (for example, an upper blade) and a second blade (for example, a lower blade) is known. . In such a cutting apparatus, if the contact pressure between the lower blade and the upper blade is too small, the cutting part of the object to be cut becomes fluffy or the powder generated by the cutting is placed on the object to be cut. There are things to do. If the contact pressure is too strong, the upper blade and the lower blade may be damaged.
Therefore, in order to prevent such a problem from occurring, a method for adjusting the position of the upper blade so as to make the contact pressure constant has been studied. (For example, refer to Patent Document 1).

  In Patent Document 1, after the upper blade and the lower blade are in contact with each other, the amount of further movement of the upper blade in the axial direction (push-in amount) is measured with a dial gauge, and the contact pressure at this push-in amount is measured with a load cell. However, a technique for adjusting to an appropriate contact pressure is disclosed.

JP-A-8-108393

  However, the adjustment method as in Patent Document 1 requires a dial gauge and a load cell to be accurately installed, and there is a problem that the installation work is complicated and troublesome. Further, in the method of holding a plurality of lower blades with one shaft and holding the plurality of upper blades with the same number of holders as the upper blades (individual holder method), it is necessary to perform the above-described complicated work for each holder. There is a problem that work efficiency is not improved.

  The objective of this invention is providing the cutting blade position adjustment jig which can adjust the position of the 1st blade with respect to a 2nd blade easily and efficiently, and the cutting blade position adjustment method.

  The cutting blade position adjusting jig of the present invention includes a first blade and a second blade, and a workpiece to be cut by bringing the abdomen of the first blade into contact with a blade contact surface formed on one surface of the second blade. A cutting blade position adjusting jig that is attachable to and detachable from the second blade in order to adjust the relative position of the first blade and the second blade in the rotation axis direction in the cutting device for cutting An outer peripheral contact surface that can contact the outer peripheral surface of the blade, and protrudes out of the surface from a part of the outer peripheral contact surface, the blade contact surface of the second blade, or the side opposite to the blade contact surface A contact convex portion capable of abutting against the surface of the second blade, or abutting convex portion capable of abutting against the blade abutting surface of another adjacent second blade, and the abdomen of the first blade when mounted on the second blade. And an abdomen contact surface that can contact.

  On the other hand, the cutting blade position adjusting method of the present invention includes a first blade and a second blade, and cuts by contacting an abdomen of the first blade and a blade contact surface formed on one surface of the second blade. A cutting blade position adjusting method for adjusting a relative position of the first blade and the second blade in the rotation axis direction in a cutting device for cutting an object, wherein the outer peripheral contact capable of contacting the outer peripheral surface of the second blade. Projects in the out-of-plane direction from the contact surface and a part of the outer peripheral contact surface, and can contact or be adjacent to the blade contact surface of the second blade or the surface opposite to the blade contact surface. An abutting convex portion capable of abutting against a blade abutting surface of another second blade, and an abdomen abutting surface capable of abutting against the abdomen of the first blade when mounted on the second blade. Further, using a cutting blade position adjusting jig that can be attached to and detached from the second blade, the step of bringing the outer peripheral contact surface into contact with the outer peripheral surface of the second blade, the blade contact surface of the second blade, And the step of abutting the abutment convex portion on the surface opposite to the blade abutment surface or the blade abutment surface of another adjacent second blade was performed at the same time or at different timings. Then, the first blade is moved until the abdomen comes into contact with the abdomen contact surface, and the relative position between the first blade and the second blade is adjusted.

Here, in the cutting device constituted by the upper blade and the lower blade, one corresponds to the first blade and the other corresponds to the second blade. The second blade adjusts the relative position with the first blade (hereinafter sometimes referred to as a reference second blade), and the second blade adjacent to the reference second blade (hereinafter referred to as the adjacent second blade). 2), the contact convex portion may contact the blade contact surface of the adjacent second blade, or the side opposite to the blade contact surface of the reference second blade. You may contact | abut. Furthermore, when cutting with only the reference second blade, or when it is not necessary to install an adjacent second blade on the side opposite to the blade contact surface of the reference second blade (for example, among the plurality of arranged second blades) When the second blade at the end is used as the reference second blade), the position of the second blade is adjusted by bringing the contact convex portion into contact with the surface opposite to the blade contact surface of the reference second blade. be able to. Further, the contact portion of the outer peripheral contact surface, the abdomen contact surface, or the contact convex portion with the second blade is a flat surface, a curved surface, an uneven surface, etc., the outer peripheral surface of the second blade, the abdomen of the first blade, or The shape of the second blade is not limited as long as it can be brought into contact with the blade contact surface of the second blade or the surface opposite to the blade contact surface.
According to the above invention, the operator makes contact between the outer peripheral surface of the reference second blade and the outer peripheral contact surface, and the reference second blade or the adjacent second blade contacts the contact convex portion. After mounting the cutting blade position adjustment jig on the first blade, the first blade is moved in a simple manner so that the abdomen is in contact with the abdomen contact surface of the cutting blade position adjustment jig. The relative position in the rotation axis direction with the blade can be adjusted. Further, even in the case of the individual holder type cutting device, it is possible to cope with only a simple operation of mounting the cutting blade position adjusting jig and moving the first blade, so that the work efficiency can be improved.

In the cutting blade position adjusting jig of the present invention, it is preferable that at least one of the outer peripheral contact surface and the contact convex portion is formed of a material softer than the second blade.
According to this invention, damage to the second blade due to contact with the outer peripheral contact surface or the contact convex portion can be suppressed.
Further, when adjusting the relative position of the first blade in a state where a plurality of second blades are arranged, it is necessary to insert the contact convex portion of the cutting blade position adjusting jig into the gap between the pair of second blades. In this insertion, the contact convex portion may come into contact with the corner portion of the adjacent second blade (the boundary between the blade contact surface and the outer peripheral surface), and the corner portion may be damaged. Further, the blade contact surface may be damaged by repeated contact with the contact convex portion. Further, since the blade contact surface greatly contributes to cutting as compared with the outer peripheral surface, it is necessary to grind the adjacent second blade when such breakage occurs. From the above, by suppressing the breakage of the adjacent second blade due to contact with the contact convex portion, it is possible to reduce the frequency of polishing the second blade and to prolong the service life.

In the cutting blade position adjusting jig of the present invention, it is preferable that the abdomen contact surface is formed in a smooth flat shape.
According to this invention, for example, when the abdomen of the first blade is held substantially vertical, and the cutting blade position adjustment jig is mounted on the second blade so that the abdomen contact surface is vertical, Even if the position of the abdomen of the first blade is shifted in the vertical direction at the time of position adjustment due to the size of the first blade etc., the reference second blade and the second blade when the abdomen is brought into contact with the abdomen contact surface The axial distance from one blade can be made constant. Therefore, the cutting blade position adjusting jig can be used for adjusting the positions of the first blades of various sizes.

In the cutting blade position adjusting jig of the present invention, it is preferable that the outer peripheral contact surface is formed in a shape along the outer peripheral surface of the second blade.
According to this invention, the outer peripheral abutment surface can be brought into close contact with the outer peripheral surface of the reference second blade, and rattling of the cutting blade position adjusting jig during position adjustment can be prevented.

The front view of the cutting device with which the cutting blade position adjustment jig which concerns on one Embodiment of this invention is mounted | worn. The side view of the said cutting device of FIG. The perspective view of the cutting blade position adjustment jig which concerns on one Embodiment of this invention. It is sectional drawing which shows the principal part at the time of mounting | wearing the cutting device with the cutting blade position adjustment jig in the state in which the lower blade is not worn or ground. It is sectional drawing which shows the principal part at the time of mounting | wearing the cutting device with the cutting blade position adjustment jig in the state in which the lower blade was worn or ground. The perspective view of the cutting blade position adjustment jig which concerns on the modification of this invention. It is sectional drawing which shows the principal part at the time of mounting | wearing the cutting device with the cutting blade position adjustment jig which concerns on the modification of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[Cutting device]
FIG. 1 is a diagram illustrating a front main part of a cutting apparatus 1 to which a cutting blade position adjusting jig 7 (see FIG. 3) according to an embodiment is mounted.
FIG. 2 is a view showing a main part of the side surface of the cutting apparatus 1.
The cutting device 1 includes a first unit 10 having a first blade 3 that is rotatably supported and a second unit 20 having a second blade 4 that is rotatably supported. Since the cutting device 1 is a system in which the first blade 3 and the second blade 4 are arranged to face each other in the vertical direction, in the description of this embodiment, as the upper blade 3 and the second blade 4 as the first blade 3. The lower blade 4, the upper unit 10 as the first unit 10, and the lower unit 20 as the second unit 20 are shown.
The upper unit 10 rotatably supports the upper blade 3 and holds the upper blade holder 11 so as to be adjustable in the vertical direction, and supports the upper blade holder 11 so as to be slidable in the axial direction of supporting the upper blade 3. And an upper frame 15.
The lower unit 20 includes a lower blade rotation shaft 21 as a support shaft that rotatably supports a plurality of lower blades 4.
Usually, in the cutting apparatus 1, when the workpiece 2 shown by a two-dot chain line in FIG. 2 is in the form of a long sheet, a plurality of pairs of upper blades along the width direction of the long sheet so that a desired slit position is obtained. 3 and the lower blade 4 are arranged facing each other in the vertical direction. Then, by continuously inserting the long sheet in the longitudinal direction, the long sheet is continuously cut at a desired slit position, and a long sheet having a desired width is obtained.
In the cutting apparatus 1 shown in FIG. 1, a plurality of upper blade holders 11 are actually slidably supported on the upper frame 15. .
Examples of the material to be cut 2 include paper, synthetic resin film, metal foil, and multilayer sheets thereof.

  The upper blade holder 11 includes an upper blade attaching / detaching portion 110 for pivotally supporting the upper blade 3, a cylinder portion 120 for moving the upper blade attaching / detaching portion 110 in the up and down direction, and an up and down direction of the cylinder portion 120. A slide part 130 for adjusting the height position and a support part 140 for slidably supporting the cylinder part 120 are provided.

The upper blade 3 is a cutting blade formed in a thin disk shape, and a cutting edge is formed on the outer edge of the disk. In the present embodiment, the material of the upper blade 3 is SKH (high-speed steel) having a hardness of 61 on the Rockwell hardness C scale (HRC).
The upper blade 3 is sandwiched and fixed by a pair of upper blade fixing holders 112 and 113, and the upper blade fixing holders 112 and 113 are rotatably supported by the upper blade rotating shaft 111 through bearings 115. As a result, the upper blade 3 is rotatably supported. The other end of the upper blade rotation shaft 111 that supports the upper blade fixing holders 112 and 113 is connected to a rotation drive source (not shown), and the upper blade 3 rotates as the upper blade rotation shaft 111 rotates. In addition, it is good also as a structure which rotates the upper blade 3 according to rotation of the lower blade 4 mentioned later, and does not rotate the upper blade 3 irrespective of this rotational drive source.

The cylinder part 120 includes a cylinder front end part 121 to which the upper blade attaching / detaching part 110 is attached, a cylinder base end part 122 fixed to the cylinder part main body 124, and a cylinder connecting the cylinder front end part 121 and the cylinder base end part 122. And a rod 123.
The cylinder front end 121 supports the upper blade rotation shaft 111 of the upper blade attaching / detaching portion 110 in a rotatable manner and is connected to the front end side (lower end side in FIG. 1) of the cylinder rod 123. In addition, a rotation driving source for rotating the upper blade rotating shaft 111 may be accommodated in the cylinder tip portion 121.
The cylinder base end portion 122 is connected to the base end side (upper end side in FIG. 1) of the cylinder rod 123. The distal end side of the slide portion 130 is accommodated in the cylinder portion main body 124 and connected to a piston or the like (not shown) in the inside. Then, the slide part 130 is advanced and retracted from the cylinder part main body 124 by expansion and contraction of the piston and the like. As the slide part 130 advances and retreats, the upper blade attaching / detaching part 110 fixed to the cylinder tip 121 moves up and down in FIG. 1, causing the upper blade 3 and the lower blade 4 to approach, separate, and overlap. be able to.

A vertical slide screw 131 for sliding the cylinder portion 120 in the vertical direction is attached to the upper surface of the slide portion 130.
The back side (the left side in FIG. 2) of the cylinder body 124 in FIG. 1 is slidably fixed to the support 140 in conjunction with the rotation of the vertical slide screw 131. When the vertical slide screw 131 is rotated, the height position of the slide part 130 can be changed and adjusted. If the height position of the slide part 130 is changed, the height position of the cylinder part 120 fixed to the slide part 130 is changed, and the zero point position of the slide part 130 is changed. Then, the height position at which the slide part 130 can advance most is also changed, and the height position of the outer edge lower end 34 (see FIG. 4) of the upper blade 3 of the upper blade attaching / detaching part 110 fixed to the cylinder part 120 is also changed. become.
As a result, the height position of the outer edge lower end 34 of the upper blade 3 can be changed and adjusted by such height position change and adjustment of the slide portion 130, and the overlap length between the upper blade 3 and the lower blade 4 described later. Can be changed and adjusted.

As shown in FIG. 1, the support part 140 slidably supports the cylinder part main body 124 on the front side 141, and a rail 152 of the upper frame 15 described later is engaged on the back side 142. Therefore, the support part 140 is movable in the left-right direction along the rail 152.
An L-shaped arm 144 is attached to the upper surface side 143 of the support part 140, and a lateral slide for adjusting the amount of movement of the support part 140 in the lateral direction (in the direction of the upper blade rotation axis 111) is attached to the tip side thereof. A knob 144a is attached, and a pinion 144b is attached to the shaft lower end side of the knob 144a. The pinion 144b is engaged with a rack 151 of the upper frame 15 described later, and the amount of movement of the support portion 140 (in the direction of the upper blade rotating shaft 111) can be adjusted according to the amount of rotation of the knob 144a.
In addition, a support portion fixing screw 145 is attached to the upper surface side 143 of the support portion 140. When the support portion fixing screw 145 is turned, the movement of the support portion 140 along the rail 152 is restricted, and the position of the support portion 140 in the direction of the upper blade rotation axis 111 is fixed.

The upper frame 15 is a long frame member, and is provided above the lower unit 20 along the axial direction of the lower blade rotating shaft 21.
The upper frame 15 includes an upper frame body 150, a rack 151 that engages with the pinion 144 b of the support portion 140, and a rail 152 that engages with a recess of the support portion 140. Both the rack 151 and the rail 152 are formed in an elongated shape along the longitudinal direction of the upper frame 15.

As described above, the lower unit 20 includes the lower blade rotation shaft 21 as a support shaft that rotatably supports the plurality of lower blades 4. The lower blade rotating shaft 21 is rotatably supported at both ends in the longitudinal direction, and is rotated by being connected to a rotation driving means (not shown) such as a motor.
Note that the lower blade 4 may not be rotated.
The lower blade 4 is an annular circular cutting blade having an opening at the center, and is mounted so as to overlap in the axial direction of the lower blade rotating shaft 21. The lower blade 4 includes a large-diameter portion 41 and a small-diameter portion 42, and a lower blade tip 4a as a blade contact surface is formed on the outer edge of the large-diameter portion 41 (see FIG. 4).
Since the lower blade 4 has the large diameter part 41 and the small diameter part 42, the cross section of the outer edge side of the lower blade 4 is substantially L-shaped. And between the large diameter part 41 of the predetermined | prescribed lower blade 4 and the large diameter part 41 of the lower blade 4 adjacent to this predetermined | prescribed lower blade 4, the groove part 43 which made the outer peripheral surface of the small diameter part 42 the bottom face is. It is formed. Therefore, the groove part 43 is periodically provided over the axial direction of the lower blade rotating shaft 21. In addition, the material of the lower blade 4 in this embodiment is SKD (die steel) whose hardness is 63 to 64 in Rockwell hardness C scale (HRC).

[Cutting blade position adjustment jig]
FIG. 3 is a perspective view of the cutting blade position adjusting jig 7 according to the embodiment.
The cutting blade position adjusting jig 7 is used to adjust the relative position in the rotational axis direction between the lower blade 4 (hereinafter, also referred to as a reference lower blade 4P) and the upper blade 3 that contacts the reference lower blade 4P during cutting. It is formed by cutting a material that is used and softer than the lower blade 4. Examples of the material of the cutting blade position adjusting jig 7 include MC nylon (registered trademark) having a Shore A hardness of 90 to 95 and Bakelite (registered trademark) (rubber hardness: Shore A 90 to 95). In addition, cutting blade position adjustment made of glass, wood, paper including paperboard and laminates, polyester resin, polyolefin resin, polyimide resin, urethane resin, epoxy resin, acrylic resin, silicone resin, natural rubber, synthetic rubber, etc. A jig 7 can also be used.

As shown in FIG. 3, the cutting blade position adjusting jig 7 includes a rectangular upper surface 71, an outer peripheral contact surface 72 provided on the opposite side of the upper surface 71, and one side of the upper surface 71 in the short direction. An abdomen contact surface 73 provided perpendicular to the upper surface 71, a first non-contact surface 74 provided in parallel to the abdomen contact surface 73 on the opposite side of the abdomen contact surface 73, and the upper surface 71. And a pair of second non-contacting side surfaces 75 provided perpendicularly to the upper surface 71 on both sides in the longitudinal direction, and a jig body 70 formed in a substantially rectangular parallelepiped is provided.
The abdomen contact surface 73 is formed in a smooth flat shape, and has a configuration in which the abdomen 33 of the upper blade 3 can be in close contact.
The outer peripheral abutment surface 72 is recessed so that the distance from the upper surface 71 becomes shorter toward the center in the longitudinal direction, and is formed in a smooth circular arc surface corresponding to the outer peripheral surface 41a of the large diameter portion 41 of the reference lower blade 4P. Has been.

In addition, a contact convex portion 76 that protrudes in a direction perpendicular to the outer peripheral contact surface 72 is provided on the abdomen contact surface 73 side of the outer peripheral contact surface 72 of the jig body 70 on the abdomen contact surface 73 side. ing.
The abutment protrusion 76 extends from one edge in the longitudinal direction of the outer circumferential abutment surface 72 (the edge on the second non-abutment side 75 side) to the other edge (the edge on the other second non-abutment side 75 side). Is provided continuously. Further, the convex end surface 761 of the abutting convex portion 76 is formed in an arcuate surface shape having a curvature substantially equal to that of the outer peripheral abutting surface 72. Further, on the first non-abutting side surface 74 side of the convex end surface 761 in the abutting convex portion 76, another flat surface parallel to the abdominal portion abutting surface 73 and adjacent to the reference lower blade 4P is formed. A convex contact surface 762 that contacts the lower blade tip 4a of the lower blade 4 (hereinafter also referred to as the adjacent lower blade 4Q) is provided.
Further, on the abdomen abutting surface 73 side, a convex non-abutting side surface 763 formed in a flat and parallel shape with the convex abutting side surface 762 is provided.
The contact convex portion 76 has the outer peripheral contact surface 72 in close contact with the outer peripheral surface 41a of the reference lower blade 4P, and the convex contact surface 762 contacts the lower blade tip 4a of the adjacent lower blade 4Q. Further, a distance H in the axial direction between the outer edge lower end 34 of the upper blade 3 that is in contact with the abdomen contact surface 73 and the lower blade tip 4a of the reference lower blade 4P (hereinafter referred to as an axial adjustment set distance H). For example, it is configured to be 0.3 mm. The axial adjustment set distance H is not limited to 0.3 mm and may be another value.

[How to adjust the cutting blade position]
Next, adjustment of the relative position of the reference lower blade 4P and the upper blade 3 in the rotation axis direction using the cutting blade position adjusting jig 7 will be described.
FIG. 4 is a cross-sectional view showing a main part when the cutting blade position adjusting jig is attached to the cutting device in a state where the lower blade is not worn or polished.
FIG. 5 is a cross-sectional view showing a main part when the cutting blade position adjusting jig is mounted on the cutting device in a state where the lower blade is worn or polished.

First, the operator has an overlap length between the upper blade 3 and the lower blade 4 (the vertical direction of the overlapping portion of the upper blade 3 and the lower blade 4 when viewed from the rotation axis direction of the upper blade 3 and the lower blade 4). 4), or before adjustment, the abutment convex portion 76 of the cutting blade position adjusting jig 7 is inserted into the gap between the reference lower blade 4P and the adjacent lower blade 4Q, as shown in FIG. As shown, the outer peripheral contact surface 72 is brought into close contact with the outer peripheral surface 41a of the reference lower blade 4P, and the convex contact surface 762 is brought into contact with the lower blade tip 4a of the adjacent lower blade 4Q. At this time, either the timing of bringing the outer peripheral contact surface 72 and the outer peripheral surface 41a into close contact with the timing of bringing the convex portion contact side surface 762 and the lower blade tip 4a into close contact may be earlier or simultaneously.
Then, after the operator moves the upper blade holder 11 downward so that the upper blade 3 approaches the reference lower blade 4P, the abdomen 33 of the upper blade 3 is brought into contact with the abdomen abutment surface 73 of the cutting blade position adjusting jig 7. The upper blade holder 11 is stopped at the moment of contact with, and this position is set as the axial initial position of the upper blade 3. By this operation, the position of the upper blade 3 is adjusted such that the axial adjustment set distance H between the outer edge lower end 34 of the upper blade 3 and the upper end of the lower blade tip 4a of the reference lower blade 4P is 0.3 mm. .
By sequentially performing such operations on the other upper blades 3, as shown in FIG. 4, if the thickness dimension T of all the lower blades 4 is equal to 3.0 mm, for example, The axial direction adjustment setting distance H between the outer edge lower end 34 of all the upper blades 3 and the lower blade tip 4a of the reference lower blade 4P corresponding to each upper blade 3 is equal to 0.3 mm. Further, since the abutment convex portion 76 is brought into contact with the adjacent lower blade 4Q instead of the reference lower blade 4P, the thickness dimension T of all the lower blades 4 is 2.2 mm by polishing or wear as shown in FIG. Even in this case, the axial direction adjustment setting distance H corresponding to all the upper blades 3 can be set to 0.3 mm.
In addition, although embodiment which adjusts the installation position of the said cutting blade position adjustment jig 7 by making the convex part contact side 762 and the lower blade front-end | tip 4a contact is shown, the other side of the lower blade front-end | tip 4a was shown. Alternatively, the protrusion non-contacting side surface 763 may be brought into contact with the lower blade tip back portion 4b.

[Cutting method]
Next, after adjusting the overlap length and the axial initial position between the upper blade 3 and the lower blade 4 of the cutting device 1 using the cutting blade position adjusting jig 7, the cutting device 1 is used for cutting. A method will be described.
After adjusting the overlap length of a plurality of pairs of the upper blade 3 and the lower blade 4 and adjusting the initial position in the axial direction using the cutting blade position adjusting jig 7, all the upper blades 3 are separated from the lower blade 4. Leave it in the state you let it.
Next, the workpiece 2 (see FIG. 2) such as a web in a tensioned state is inserted into the gap between the upper blade 3 and the lower blade 4.
Thereafter, when the slide portion 130 is advanced, the outer edge lower end 34 of the upper blade 3 enters the groove portion, and the upper blade 3 and the lower blade 4 overlap with each other when viewed from the direction of the upper blade rotation axis 111.
When the horizontal slide knob 144a is rotated, the pinion 144b rolls on the rack 151, the upper blade holder 11 moves in the direction of the upper blade rotation axis 111, and the upper blade 3 is the lower blade of the lower blade 4. Proximity to the tip 4a. Further, the upper blade 3 and the lower blade 4 are brought into contact with each other via the workpiece 2. Then, the upper blade holder 11 is moved by the axial movement distance during cutting from this state, and the upper blade 3 is pressed against the lower blade 4. At this time, for example, when the axial movement distance at the time of cutting is 0.5 mm, the upper blade 3 moves 0.3 mm from the axial initial position, and the abdomen 33 comes into surface contact with the lower blade tip 4a, and then further 0. It is pressed against the reference lower blade 4P by an amount of 2 mm movement.
Subsequently, when the workpiece 2 is pulled in the traveling direction, the cutting of the workpiece 2 is started. At this time, a rotational driving force may be applied to the lower blade 4 to cause the upper blade 3 to follow the rotation of the lower blade 4, or a rotational driving force may be applied to both the upper blade 3 and the lower blade 4.

According to the present embodiment as described above, the following operational effects can be achieved.
(1) The abutment convex portion 76 of the cutting blade position adjusting jig 7 is inserted into the gap between the reference lower blade 4P and the adjacent lower blade 4Q, and the outer peripheral contact surface 72 is brought into close contact with the outer peripheral surface 41a of the reference lower blade 4P. At the same time, after the convex contact surface 762 is brought into contact with the lower blade tip 4a of the adjacent lower blade 4Q, the abdomen 33 of the upper blade 3 is brought into contact with the abdomen contact surface 73. The axial adjustment set distance H with the lower blade 4P can be set to 0.3 mm.
Therefore, the position of the upper blade 3 can be adjusted by a simple method in which the upper blade 3 is brought into contact with the cutting blade position adjusting jig 7 attached to the lower blade 4. In particular, even with the individual holder method, no special device is required, so that work efficiency can be improved.

  (2) Since the contact protrusion 76 is in contact with the adjacent lower blade 4Q, when the thickness dimension T of the plurality of lower blades 4 is reduced by the same dimension due to polishing or wear, the cutting blade position is adjusted. With the jig 7, the axial adjustment set distance H corresponding to all the upper blades 3 can be made constant.

  (3) Since the cutting blade position adjusting jig 7 is made of a material softer than the lower blade 4, even if it contacts the lower blade 4 when the cutting blade position adjusting jig 7 is mounted, the blade contact surface, etc. Breakage can be prevented and the life of the lower blade 4 can be extended.

  (4) Since the abdomen contact surface 73 is smooth and is flat when the outer peripheral contact surface 72 is in close contact with the outer peripheral surface 41a, the upper blade 3 of the position adjustment target is adjusted by wear or replacement. Even if the size changes and the position of the abdomen 33 of the upper blade 3 shifts in the vertical direction during position adjustment, the axial direction adjustment set distance H between the reference lower blade 4P and the upper blade 3 when the abdomen 33 is brought into contact with each other. Can be constant. Therefore, the cutting blade position adjustment jig 7 can be used for position adjustment of the upper blade 3 of various sizes.

  (5) Since the outer peripheral contact surface 72 is formed in a smooth circular arc surface corresponding to the outer peripheral surface 41a, the outer peripheral contact surface 72 can be brought into close contact with the outer peripheral surface 41a, and the cutting blade position at the time of position adjustment Shaking of the adjustment jig 7 can be prevented.

In addition, this invention is not limited to embodiment mentioned above, The deformation | transformation shown below is included in the range which can achieve the objective of this invention.
For example, it is good also as a structure as shown in FIG.
The cutting blade position adjusting jig 8 shown in FIG. 6 is used for adjusting the position of the upper blade 3 in the axial direction (horizontal direction) and the vertical direction, and is similar to the cutting blade position adjusting jig 7. A main body 70 is provided. An abutment convex portion 86 that protrudes in a direction perpendicular to the outer peripheral abutment surface 72 is provided at an end of the outer peripheral abutment surface 72 of the jig body 70 on the abdomen abutment surface 73 side.
On the first non-abutting side surface 74 side of the abutting convex portion 86, a convex portion abutting formed on a flat surface parallel and smooth to the abdominal portion abutting surface 73 and abutting on the lower blade tip 4a of the reference lower blade 4P. A side surface 862 is provided.
Furthermore, a substantially arcuate plate-like vertical positioning portion 87 is provided at the tip of the contact convex portion 86.
The vertical positioning portion 87 is connected to the contact convex portion 86 at the center in the arc direction of the outer peripheral surface. The vertical positioning portion 87 is an upper portion as a first blade abutting portion on which a mounting portion 871 that can be mounted along the outer edge of the small-diameter portion 42 of the lower blade 4 and an outer edge lower end 34 of the upper blade 3 can abut. The blade contact portion 872 and a grip portion 873 protruding from the outer edge of the upper blade contact portion 872 are configured.

The mounting portion 871 is formed in an arc shape and can be mounted along the outer edge of the small diameter portion 42. The length of the mounting portion 871 in contact with the small diameter portion 42 is not limited as long as the cutting blade position adjusting jig 8 can be mounted on the lower blade 4, but the circumferential length of the small diameter portion 42 is 2 as in the present embodiment. It is preferable to make it less than a part.
When the mounting portion 871 is mounted along the outer edge of the small diameter portion 42, the upper blade abutting portion 872 is positioned on the radially outer side of the small diameter portion 42 relative to the mounting portion 871 and is constant from the outer edge of the large diameter portion 41. It is formed in an arc shape that is offset to the inside of the dimension. This offset dimension corresponds to the overlap length L (see FIG. 7). Therefore, the cutting blade position adjustment jig 8 is formed in a substantially semicircular arch shape in which the arc of the upper blade contact portion 872 is along the arc of the mounting portion 871.
The grip portion 873 is an outer edge of the upper blade contact portion 872 and protrudes outward from one end side of the substantially semicircular arch shape. The protrusion direction tip 873a of the grip portion 873 is located outside the outer edge of the large diameter portion 41 in a state where the mounting portion 871 is mounted on the outer edge of the small diameter portion 42.
The upper blade abutting portion 872 is formed in an arc shape that is offset from the outer edge of the large diameter portion 41 to the inside by a fixed dimension, and is therefore hidden in the groove 43 of the reference lower blade 4P. Even in such a state, it is possible to easily remove the cutting blade position adjusting jig 8 from the reference lower blade 4P by grasping the protruding direction tip 873a side of the grip portion 873.

Then, when adjusting the positions of the upper blade 3 and the reference lower blade 4P using the cutting blade position adjusting jig 8, the cutting blade position adjusting jig 8 is mounted on the reference lower blade 4P as shown in FIG. To do. At this time, the outer peripheral contact surface 72 and the outer peripheral surface 41a are in contact, the convex contact surface 862 and the lower blade tip 4a are in contact, and the mounting portion 871 and the small diameter portion 42 are in contact.
Thereafter, as shown by the solid line, the overlap length L is adjusted by bringing the outer edge lower end 34 of the upper blade 3 and the upper blade contact portion 872 into contact with each other, and as shown by the two-dot chain line, The abdomen 33 and the abdomen abutment surface 73 are brought into contact with each other to set the axial initial position.
With such a configuration, the initial position in the axial direction and the overlap length L can be set by one cutting blade position adjusting jig 8, and workability can be improved.

The material of the jig main body 70 of the cutting blade position adjusting jigs 7 and 8 having the outer peripheral contact surface 72 and the contact convex portions 76 and 86 may be different. The other may be MC nylon or phenol resin.
And although the outer peripheral contact surface 72 was formed in the smooth planar shape, as long as positioning with respect to the outer peripheral surface 41a can be performed, an uneven | corrugated shape may be sufficient. Further, the abdomen abutting surface 73 may also be uneven, and the abdomen abutting surface 73 may be inclined when it is attached to the reference lower blade 4P.

In addition, in the said embodiment, although the cutting device 1 was a specification with which the upper blade 3 and the lower blade 4 oppose an up-down direction, it is not restricted to this. For example, it may be a cutting device having specifications that face in the horizontal direction or in an oblique direction.
Then, the cutting blade position adjusting jigs 7 and 8 are cut in a so-called shaft passing method (a method in which a plurality of upper blades are mounted on one rotating shaft and a plurality of lower blades are mounted on one rotating shaft). You may use for the position adjustment of an upper blade and a lower blade.

DESCRIPTION OF SYMBOLS 1 ... Cutting apparatus 2 ... Cut object 3 ... Upper blade (1st blade)
4 ... Lower blade (second blade)
4a ... Lower blade tip (blade contact surface)
7, 8 ... Cutting blade position adjusting jig 33 ... Abdominal part 41a ... Outer peripheral surface 72 ... Outer peripheral contact surface 73 ... Abdominal contact surface 76, 86 ... Contact convex part

Claims (5)

The first blade in a cutting apparatus, comprising a first blade and a second blade, for cutting an object to be cut by bringing the abdomen of the first blade into contact with a blade contact surface formed on one surface of the second blade And a cutting blade position adjusting jig that can be attached to and detached from the second blade in order to adjust the relative position in the rotation axis direction of the second blade,
An outer peripheral contact surface capable of contacting the outer peripheral surface of the second blade;
Projecting from a part of the outer peripheral contact surface in the out-of-plane direction, it is possible to contact the blade contact surface of the second blade or the surface opposite to the blade contact surface, or another adjacent second A contact convex portion capable of contacting the blade contact surface of the blade;
When mounted on the second blade, an abdomen contact surface capable of contacting the abdomen of the first blade;
A cutting blade position adjusting jig characterized by comprising: The cutting blade position adjusting jig according to claim 1,
A cutting blade position adjusting jig, wherein at least one of the outer peripheral contact surface and the contact convex portion is made of a material softer than the second blade. The cutting blade position adjusting jig according to claim 1 or 2,
The cutting blade position adjusting jig, wherein the abdomen contact surface is formed in a smooth flat shape. The cutting blade position adjusting jig according to any one of claims 1 to 3,
The cutting blade position adjusting jig, wherein the outer peripheral contact surface is formed in a shape along the outer peripheral surface of the second blade. The first blade in a cutting apparatus, comprising a first blade and a second blade, for cutting an object to be cut by bringing the abdomen of the first blade into contact with a blade contact surface formed on one surface of the second blade And a cutting blade position adjusting method for adjusting a relative position in the rotation axis direction of the second blade,
An outer peripheral contact surface capable of contacting the outer peripheral surface of the second blade;
Projecting from a part of the outer peripheral contact surface in the out-of-plane direction, it is possible to contact the blade contact surface of the second blade or the surface opposite to the blade contact surface, or another adjacent second A contact convex portion capable of contacting the blade contact surface of the blade;
When mounted on the second blade, using a cutting blade position adjustment jig that can be attached to and detached from the second blade, comprising an abdomen contact surface that can contact the abdomen of the first blade,
Contacting the outer peripheral contact surface with the outer peripheral surface of the second blade, the blade contact surface of the second blade, the surface opposite to the blade contact surface, or another adjacent first The step of bringing the abutment convex portion into contact with the blade abutment surface of the two blades at the same time or at a different timing,
The cutting blade position adjusting method, wherein the first blade is moved until the abdomen comes into contact with the abdomen contact surface to adjust the relative position between the first blade and the second blade.

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