JPH11114878A - Cutter device - Google Patents

Abstract

(57) [Problem] To provide a cutter device having a plurality of cylindrical blades opposed to each other, so that the cylindrical blades are easily brought into close contact with each other. SOLUTION: A cylindrical blade 6A is annularly fixed to one end of a driven shaft 2, and a cylindrical blade 6 is attached to a central portion of the driven shaft 2 and a drive shaft 1.
Are provided in the axial grooves 5 provided in the drive shaft 1 and the driven shaft 2 respectively.
And a common sphere 13 is fitted into a groove 11 provided on the inner surface of the shaft hole excluding both ends, and can be moved in the axial direction, and is attached so as to rotate in conjunction with the shaft rotation. A cylindrical blade 6B is axially attached to the end in the same manner as the cylindrical blade 6, is urged toward the shaft stopper 3 by a spring coil 17, is annularly attached to the drive shaft 1 and the driven shaft 2, and is arranged in a staggered manner. The cutting edges 7 of the cylindrical blades 6 were brought into close contact with each other. Further, the axial movement amount is regulated by the roller 18 so that the cylindrical blade 6B urged by the spring coil 17 does not become inclined with respect to the driven shaft 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical blade which is annularly mounted on a pair of rotating shafts arranged in parallel with each other to arrange a plurality of cylindrical blades in a staggered manner. The present invention relates to a cutter device in which side surfaces are slid in contact with each other to continuously cut a sheet traveling between cylindrical blades mounted on different rotating shafts.

[0002]

2. Description of the Related Art In recent years, long tapes have been demanded as narrow carrier tapes used for assembling electronic devices and the like. In this case, since it is impossible to cut a long and wide sheet (for example, 1 m or more) as it is, a slitter by various cutting methods such as a shear cut method, a leather cut method, and a score cut method. Has come to be used. Among these methods, the shear cut method is superior from the viewpoint of cutting accuracy and the like, and is widely adopted.

[0003] The shear cut method has the same principle as scissors,
This is a method in which two sets of upper and lower circular blades are made into a set and cut at a place where they mesh. This method includes shear cutting (shear cutting with a single-sided blade) and block cutting (shear cutting with a cylindrical blade) based on the shape of a circular blade.

[0004] A shear cut usually comprises a rotating circular one-sided blade and a cylindrical blade, and the circular one-sided blade cuts at zero clearance while constantly contacting the cylindrical blade with a spring or the like. There is an advantage that it is finished.

However, in this cutting method, as shown in FIG. 4, the circular one-sided blade 23 cuts the sheet 24 on the cylindrical blade 6C, so that the left and right ends cannot be cut under the same conditions, and one end face is not cut. In this case, a helicopter height phenomenon occurs, and there is a problem that the cut material is meandered at the time of winding and the winding cross section is not uniform.

On the other hand, the block cutting method is a method in which the sheet 24 traveling between the cylindrical blades is cut by the cylindrical blades 6C whose side surfaces are in sliding contact with each other as shown in FIG. However, since it is difficult to closely contact the side surfaces of the cylindrical blade 6C from the viewpoint of manufacturing accuracy, there are many methods for accurately reducing the clearance by complicated assembly work and adjustment mechanisms. Techniques have been disclosed. However, as long as there is a clearance, burrs and the like are unavoidable on the cut surface, and further improvement has been desired.

[0007]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has been made to provide a cutter device having a plurality of cylindrical blades opposed to each other and which solves the problem of clearance of the cylindrical blades. It is the purpose.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has a plurality of cylindrical blades mounted on a pair of rotating shafts arranged in parallel with each other. In an apparatus that is arranged in a shape, the side surfaces of adjacent cylindrical blades are slid in contact with each other, and the sheet running between the cylindrical blades attached to different rotary shafts is continuously cut, the surface of each rotary shaft Along with providing a plurality of grooves in the axial direction, a plurality of grooves are provided in the axial direction on the inner surface of the shaft hole of each cylindrical blade except for both ends thereof, and each cylindrical blade is provided in the axial direction of the rotating shaft. A cutter having a first configuration in which a common connecting member is fitted into the groove of the rotating shaft and the groove of the cylindrical blade so as to be movable and interlocked with the rotation of the rotating shaft, and the cylindrical blade is assembled to the rotating shaft. Equipment and

In the cutter device having the first configuration, a spring member applies an urging force toward the other end to a cylindrical blade at one end of the plurality of cylindrical blades arranged in a staggered manner. A cutter device having a configuration of

In the cutter device having the second configuration, a portion of the cylindrical blade at one end to which the urging force is applied by the spring member is diametrically opposed to a portion where the side surface is in sliding contact with the adjacent cylindrical blade. A cutter device having a third configuration in which a movement limiting member that limits movement of the cylindrical blade in the other end direction by a predetermined amount or more is provided.
This is to solve the above problem.

[0011]

FIG. 1 shows an embodiment of the present invention.
This will be described in detail with reference to FIG. A drive shaft 1 that is rotated by a motor (not shown) and a driven shaft 2 that is connected to the drive shaft 1 by a gear or a belt (not shown) and that is reversely rotated by the rotation of the drive shaft 1 are arranged in parallel.
It is rotatably mounted on the shaft stopper members 3 and 4.

The drive shaft 1 and the driven shaft 2 are formed thick except for both ends, and a plurality of, for example, three grooves 5 having a semicircular cross section are continuously provided in the surface thereof on the surface thereof. I have. In addition,
The interval between the three grooves 5 is provided at a position that equally divides the circumferential direction into three.

As shown in FIG. 1, cylindrical blades 6 are attached to thick portions of the drive shaft 1 and the driven shaft 2, and are arranged in a staggered manner. As is conventionally known, the cylindrical blade 6 has a blade edge 7 provided at the intersection of the cylindrical outer peripheral surface 8 and the circular side surface 9, and includes one end of the driven shaft 2, for example, a shaft, of the cylindrical blade 6. The cylindrical blade 6A attached to the stop member 3 is fixedly attached by screws (not shown) so as not to move in the axial direction and to rotate in conjunction with the rotation of the driven shaft 2.

On the other hand, the central portion of the driven shaft 2 and the cylindrical blade 6 attached to the drive shaft 1 are both movable in the axial direction.
It is attached so as to rotate in conjunction with the rotation of the shaft.

That is, the cylindrical blade 6 has three semicircular grooves 11 having the same depth as the grooves 5 of the drive shaft 1 and the driven shaft 2 on the inner surface of the shaft hole 10 except for both ends thereof in the axial direction. Is provided. The groove 11 is also provided at a position that divides the circumferential direction into three so that the groove 11 can face the groove 5 such as the drive shaft 1. When the position of the groove 5 matches the position of the groove 11, a cylindrical cavity 12 is formed. Here, a plurality of, for example, four spheres 13 can be fitted in series. Therefore, groove 1
1 is formed to be eight times as long as its depth.

Further, a circumferential groove 11a is provided facing both ends of the groove 11 so that the spherical body 13 fitted into the cylindrical cavity 12 does not fall off, and a stopper ring 13a can be fitted into the circumferential groove 11a. It has become.

Accordingly, the drive shaft 1 (the same applies to the driven shaft 2) is inserted into the shaft hole 10 of the cylindrical blade 6 in which the stopper ring 13a is fitted into one of the circumferential grooves 11a, and a cylindrical cavity 12 is formed. So that the sphere 13 is inserted into the cylindrical cavity 12 from the side where the stopper ring 13a is not fitted, and the other circumferential groove 11 is inserted.
By fitting the stopper ring 13a also at a, the sphere 13 does not fall out of the cylindrical cavity 12.

The cylindrical blade 6 thus annularly mounted on the drive shaft 1 and the driven shaft 2 can move in the axial direction, but cannot rotate with respect to the drive shaft 1 and the driven shaft 2. That is, they are mounted so as to rotate in conjunction with the rotation of the drive shaft 1 and the driven shaft 2.

The driven shaft 2 is located on the opposite side of the cylindrical blade 6A, that is, on the side of the shaft stopper 4, and is movable in the axial direction on the driven shaft 2 in the same manner as the cylindrical blade 6. The annularly mounted cylindrical blade 6B has a blade edge 7 only on the side facing the shaft stopper 3.
Is provided, and the cylindrical outer peripheral surface is formed on the opposite side of the cutting edge 7 with a smaller diameter than the cutting edge 7 side, and between the large diameter portion 14 on the cutting edge 7 side and the small diameter portion 15 on the opposite side. An annular bulging portion 16 is formed so as to be shifted toward the blade edge 7, and one end of a spring coil 17 movably mounted on the small-diameter portion 15 is in contact with the small-diameter side end surface of the annular bulging portion 16, and the opposite. A roller 18 is rotatably in contact with the side end surface.

The other end of the spring coil 17 is connected to the driven shaft 2
Are supported so as not to move in the direction of the shaft stopper 4 by a spring support arm 19 fixed to the shaft stopper 4 side. Accordingly, the cylindrical blade 6B receives the urging force in the direction of the shaft stopper 3 due to the elasticity of the spring coil 17 and is annularly attached to the drive shaft 1 and the driven shaft 2 and arranged in a staggered manner. (Including a cylindrical blade with B) are in close contact with each other.

The spring support arm 19 has a variable distance between the side supporting the spring coil 17 and the side fixed to the axle stopper 4, so that the shaft for urging the cylindrical blade 6B can be used. The force in the direction of the stop member 3 can be adjusted.

On the other hand, the roller 18 is rotatably supported by a roller support arm 20 fixed to the shaft stopper 4, and the circular side surface 9 of the cylindrical blade 6B is in contact with the circular side surface 9 of the cylindrical blade 6. At the diametrically opposed position of the contact portion 21, the spring coil 17 contacts the large-diameter end surface of the annular bulging portion 16.
Thus, the amount of movement in the axial direction is regulated so that the cylindrical blade 6B urged toward the shaft stopper 3 is not inclined with respect to the driven shaft 2.

The roller support arm 20 also has a variable distance between the side supporting the roller 18 and the side fixed to the shaft stopper 4, and usually has an annular bulging portion 16 of the roller 18.
Is set so as to be located on the large-diameter side end surface position of the annular bulging portion 16 when the cutting edges 7 of all the cylindrical blades 6 come into contact with each other with zero clearance.

Therefore, in the cutter device having the above-described structure according to the present invention, the cutting edges 7 of all the cylindrical blades 6 mounted on the driving shaft 1 and the driven shaft 2 are connected to the spring coils 17.
And a complicated assembling operation for reducing the clearance between the cutting edges 7 required in the related art to zero becomes unnecessary.

Further, the cylindrical blade 6B is
The amount of movement of the cylindrical blade 6B in the direction of the shaft stopper 3 is restricted, so that the cylindrical blade 6B is not attached to the driven shaft 2 in an inclined state. Therefore, the cutting edge 7 of the cylindrical blade 6B and the cutting edge 7 of the cylindrical blade 6 are more likely to be in close contact with each other, and burrs do not appear when the sheet is cut.

Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the appended claims.

For example, as shown in FIG.
A slit 22 is formed in an annular shape in the vicinity of the cutting edge 7, and the cutting edge 7 is formed.
When the members are brought into close contact with each other by the urging force of the spring coil 17, the slits 22 can function as a relief area even if they come into close contact with each other somewhat, so that the abrasion of the contacted portions can be reduced.

Further, instead of the spring coil 17, it is also possible to provide a structure in which a biasing force in the direction of the shaft stopper 3 is applied to the cylindrical blade 6B by a leaf spring.

In place of the spherical body 13, a cylindrical member or the like may be fitted into the cavity 12 formed by the grooves 5 and 11, and the cylindrical blades 6 and 6B may be attached.

Also, an example has been shown in which three grooves 5 and 11 are provided, respectively. However, two or four grooves may be provided, and one of the grooves may be made large (deep). Alternatively, the other groove may be formed small (shallow), or may have an oval cross section or a rectangular cross section, even if it has a cross-sectional shape.

It is also possible to drive the driven shaft 2 on which the cylindrical blades 6A and 6B are attached by a motor, and to use the drive shaft 1 on which the cylindrical blades 6A and 6B are not attached as the driven shaft. Further, the cylindrical blades 6A and 6B may be configured to be attached to different rotating shafts.

[0032]

As described above, according to the cutter device of the present invention, the cutting edges of the cylindrical blades which are annularly mounted on the pair of rotating shafts and arranged in a zigzag manner are brought into close contact with each other by the urging force of the spring member. Therefore, the sheet can be cut without burrs without performing complicated assembly work.

Further, in a cutter device provided with a movement restricting member such as a roller, the cylindrical blade to be spring-biased is not attached to the rotating shaft in an inclined state, so that the blade edges are more closely attached to each other. It will be easier.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of a cutter device according to the present invention.

FIG. 2 is an explanatory diagram showing a main part of one embodiment.

FIG. 3 is an explanatory diagram showing a main part of a modification.

FIG. 4 is an explanatory diagram showing a conventional technique.

FIG. 5 is an explanatory diagram showing another conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drive shaft 2 ... Follower shaft 3.4 ... Axle stop member 5 ... Groove 6.6A / 6B ... Cylindrical blade 7 ... Blade edge 8 ... Cylindrical outer peripheral surface 9 ... Circular side surface 10 ... Shaft hole 11 ... Groove 11a ... Circumference Groove 12 ... Cavity 13 ... Sphere 13a ... Stopper ring 14 ... Large diameter part 15 ... Small diameter part 16 ... Circular bulge part 17 ... Spring coil 18 ... Roller 19 ... Spring support arm 20 ... Roller support arm 21 ... Contact part 22 ... Slit 24 ... Sheet

Claims (3)

[Claims] 1. A cylindrical blade is attached to a pair of rotating shafts arranged in parallel with each other, a plurality of cylindrical blades are arranged in a staggered manner, and the side surfaces of adjacent cylindrical blades are slid in contact with each other. An apparatus for continuously cutting a sheet running between cylindrical blades attached to different rotating shafts, wherein a plurality of grooves are provided in the axial direction on the surface of each rotating shaft, and each cylindrical blade is provided. On the inner surface of the shaft hole, a plurality of grooves are provided in the axial direction except for both ends thereof, and each cylindrical blade is movable in the axial direction of the rotating shaft and can be interlocked with the rotation of the rotating shaft. A cutter device wherein a common connecting member is fitted into the groove and the groove of the cylindrical blade, and the cylindrical blade is assembled to the rotating shaft. 2. The cutter according to claim 1, wherein a biasing force toward the other end is applied to a cylindrical blade at one end of the plurality of cylindrical blades arranged in a staggered manner by a spring member. apparatus. 3. A cylindrical blade at one end where a biasing force is applied by a spring member, and a portion of the cylindrical blade at a diametrically opposed portion where a side surface of the cylindrical blade is in sliding contact with an adjacent cylindrical blade. 3. The cutter device according to claim 2, further comprising a movement restricting member for restricting the movement in the end direction beyond a predetermined value.