JP2003200390A - Punching/cutting blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a punching/cutting blade which solves such a problem that when cutting a belt-like material such as a pillow packing belt specified length, there is a possibility of damaging human skin or other pillow packaging products by its sharp corner and forms a beautiful cutting line. <P>SOLUTION: This punching/cutting blade cuts a belt-like material into pieces, and a male blade block has a male blade wherein the cutting edge line of at least one cutting edge of duplex cutting edge having blade width not less than the width of the belt-like material, and guide sections which project in parallel with the moving direction for cutting in both end sections of the duplex cutting edge of the male blade and center the belt-like material by the movement of cutting motion because the inside interval between which the belt-like material passes becomes gradually narrow toward the cutting edge side from the tip side. A female blade block has a female blade engaging with the duplex cutting edge of the male blade and a guide hole for guiding the guide section of the male blade block outside of both end of the female blade. The guide section 3 of the male block and the guide hole of the female blade block are combined so as to always be engaged during standby, too. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting blade for individually cutting continuous strips so that the cutting line is formed into a predetermined non-linear shape. The present invention relates to a punching cutting blade suitable for stick-cutting a continuous body containing sugar.

[0002]

2. Description of the Related Art As a strip-shaped material, there is a continuous package called a pillow package shown in FIG. 6a. A sheet is formed by fusing both sides of the sheet from one end to form a tube, and the middle of the tube is fused in the width direction to form a bag, and the content is powder such as sugar or pepper, or mayonnaise or ketchup. In order to wrap a fluid body such as the above, a fusion seal is made in the width direction at a predetermined distance from the fusion portion in the width direction. When fusion-sealing is performed, a bag-shaped portion is newly formed following this, so that the contents are inserted and sealed continuously. By cutting the middle of the fused portion, the packages are individually separated as shown in FIG. 6c. Heretofore, in order to cut the fused portion, it has been general that the cutting edge line has a linear or fine zigzag shape.

[0003]

When the fusion-bonded portion is cut with a straight blade, both ends of the cutting line basically form right angles or angles close to right angles. When cut with a zigzag chevron-shaped cutting blade, the cutting line becomes a continuous sharp chevron. For this reason, there is a risk of injury at sharp corners and peaks, and scratching between the separated individual packages. In particular, when the packaging material is a hard material such as aluminum foil, resin, or low-cured cured paper, the possibility of injury is higher. In addition, depending on the package, if the cutting line is a straight line in the width direction of the strip material and both ends of the cutting line are right angles, the appearance of the product may be impaired.

The present invention has been made in view of the above problems of the prior art, and its object is to:
An object of the present invention is to provide a punching cutting blade that eliminates the risk of injury at the cutting portion or damage to the package during handling and forms a cutting line that makes the product look aesthetic.

[0005]

In order to achieve the above-mentioned object, the invention of claim 1 of the present application is a punching cutting blade for cutting a strip-shaped material, wherein the male blade block has a blade width equal to or larger than the width of the strip-shaped material. A male blade having a non-linear cutting edge line of at least one of the double-sided cutting blades having a double-sided cutting edge, and the strip-shaped member protruding at both ends of the double-sided cutting edge of the male blade in parallel with the cutting movement direction. Has a guide portion for centering the band-like material by the movement of the cutting operation by gradually narrowing the inner space passing through from the tip side toward the cutting edge side, and the female blade block is fitted to the double-sided cutting edge of the male blade. And a guide hole for guiding the guide portion of the male blade block outside both ends of the female blade, and the guide portion of the male blade block and the guide hole of the female blade block are on standby for cutting. Is always combined in a fitted state.

According to the first aspect of the present invention, since the strip-shaped material sent to the inside of both the guide portions is formed into a taper in which the inner space is narrowed toward the cutting blade side, the male blade block is the female blade block. Even if the strip-shaped member is deviated, the strip-shaped member is gradually moved to the center and centered, so that both ends of the cutting line are formed into a predetermined shape and the appearance is not impaired. Further, since at least one of the cutting edge lines has a non-linear shape, the corners of the cut portion can be formed by curved lines and R surfaces to eliminate sharp corners, and there is no fear of damage.

According to a second aspect of the present invention, the inner spacing of the guide portion is formed substantially constant at the root portion on the cutting edge side. According to the invention of claim 2, the strip-shaped member is centered by the taper of the guide portion, but is completely centered and stably held by the guide root portion near the cutting edge, so that the lateral portion at the time of cutting is divided. Even if a force is generated, the deviation of the strip material is stopped and the symmetry of the cutting line is not impaired.

According to a third aspect of the present invention, the female blade block is a block body having a through hole formed by opposing female blades and guide holes at both ends, and is divided into two parts by a surface inclined with respect to the center plane. Therefore, the fitting gap between the male blade and the female blade can be adjusted by offsetting them from each other in the axial direction.

According to the invention of claim 3, the adjustment can be made by axially moving the two female blade blocks into which the fitting gap between the male blade and the female blade is divided. It is possible to always obtain a clear cutting line as the optimum fitting gap.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A description will be given below with reference to the drawings. 1 is a view showing a combined state of punching cutting blades used in a vertical pillow packaging machine, FIG. 2 is a view showing a male blade block,
FIG. 3 is a view showing one of the divided female blade blocks, FIG. 4 is a view showing the other, and FIG. 5 is a view of a pillow package product cut by the punching cutting blade of the present invention.

The rectangular parallelepiped male blade block 1 has, for example, an end surface of a plate-shaped blade 1a (thickness in the longitudinal direction of the block) having a thickness equal to the width for punching out the fused portion of the pillow wrapping belt (punching width in the feeding direction of the pillow wrapping belt). Position), the male blades 2Aa and 2Ba of the linear cutting blade are formed in parallel to the ridge angles of the left and right side surfaces shown in FIG. 2c, which are perpendicular to the block movement direction or slightly inclined to increase sharpness. Is
Male blades 2Ab, 2Ab; 2Bb, 2B of R-cutting blades of about 1/4 circle that open outward at both ends of the linear cutting blade
b is formed.

In the present embodiment, the male blade has an I-shaped double-sided cutting edge in which the cutting edges are formed on both sides of the end face of the blade 1a, but the male blades 2Aa and 2Ba are not limited to straight lines. ,
The R cutting blade including the male blades 2Ab and 2Bb may be formed into a corrugated cutting edge or a round mountain-shaped cutting blade, or only one of the cutting blades may be formed into a corrugated cutting blade or a round mountain-shaped cutting blade. That is, the cutting edge is shaped so as to create an aesthetic appearance at the cutting line and to form a cutting angle so as not to damage the body or individual packages.

And male blades 2Ab, 2Ab, 2B of R cutting edge
Guide parts 3 and 3 are provided outside the both ends of b and 2Bb so as to be parallel to the block moving direction and over the entire length in the block longitudinal direction. As shown in FIG. 2c, the guide portions 3 and 3 have surfaces 3Aa and 3A extending outwardly in a substantially tangential direction following the male blades 2Ab, 2Ab; 2Bb and 2Bb of the R cutting edge.
a; 3Ba and 3Ba are female blade blocks 5A and 5 to be described later.
It becomes the guide surface with B. The guide portions 3 and 3 are surfaces 3Ab and 3Ab; 3 which are positioned parallel to the male blades 2Aa and 2Ba of the straight blades.
Bb, 3Bb and both end surfaces 3C, which are perpendicular to and parallel to this surface,
2C is a columnar body surrounded by 3C and the guide surface.
As shown in a, it extends the full length of the block in the moving direction of the block.

Further, in the guides 3 and 3, opposed inner side surfaces 3D, 3D of the portion projecting from the male blade are formed to have an outward taper, and the inner space is gradually narrowed from the tip side toward the root portion on the cutting edge side, At the root portion, parallel surfaces 3E, 3E having a substantially constant width S are formed. The constant width S is an interval in which the center line of the pillow package product is hardly displaced and the fusion width can be easily passed. Male blade block 1 for cutting the wrapping band by forming the inside of the guide into a taper
The continuous advancement of the centering of the package is performed. The cross section of the male blade at the cutting edge line has the same I shape as in FIG. 2b of the side view, and in this cross section, it is symmetrical with respect to the center point of the double-sided cutting edge. The male blade block 1 thus formed is fastened by bolts, for example, in the reciprocating rod of the vertical pillow packaging machine and the screw hole 1b formed in the block end surface 1c.

On the other hand, the rectangular parallelepiped female blade block is a rectangular parallelepiped block having a through fitting hole through which the male blade block 1 having an I-shaped cross section shown in FIG. 2c can slide, and is divided into 5A and 5B in the vicinity of the vertical center line CL in FIG. 1b. It was done. This dividing surface 8A, 8
The vertical center line CL which is the center plane at the angles A, 8B and 8B
1 ° with respect to a plane parallel to the longitudinal direction including
In the following, it was slanted 13'13 "and divided so that the thickness of the female blade blocks 5A and 5B became equal at the center of the longitudinal dimension. By this, 5A and 5B were moved relative to each other in the axial direction and the fitting gap between the male blade and the female blade was made. 5A and 5B have the same E-shaped cross section except for the dimensional difference caused by inclining the cut surface and the external tightening bolt seat, so that one of them is shown in FIG. 4B of 5B, the reference numeral of 5A is changed from A to B, and the description is omitted.

One surface of the divided female blade block 5A is formed into a half of the hole contour, and the end surface thereof is formed into mountain-shaped inclined surfaces 5Aa and 5Aa with the central ridge line 6A as the sakai, and the intersection of the inclined surface and the hole is formed. A female blade is formed on the line. Female blades 6Aa, 6A of linear cutting blades corresponding to the male blade 2Aa on both sides of the ridgeline 6A
Aa, R corresponding to male blades 2Ab and 2Ab in succession
Female blades 6Ab and 6Ab as cutting blades are formed. The inclination angle of the inclined surfaces 5Aa and 5Aa of the end surfaces is 5 ° in this embodiment with respect to the right angle end surface.

The cutting operation of the strip-shaped material by the female blade 6Aa formed on the inclined surface and the subsequent female blade 6Ab is performed by the ridge line 6
The sharpness of the cutting edge is improved because it advances from the position A toward both sides. The female blade block 5A corresponds to the guide portion 3 of the male blade block 1, and the guide portions 7 and 7 are female blades 6A having R cutting edges.
b, 6Ab, the guide surfaces 7Aa, 7Aa corresponding to the male blade guide surfaces 3Aa, 3Aa, and the male blade guide portion side surface 3A.
Corresponding surfaces 7Ab and 7Ab of b and 3Ab, and half-width surfaces 7Ac and 7Ac corresponding to the guide blade side end surfaces 3C and 3C of the male blade are formed.

The guide portions 7, 7 of the female blade blocks 5A, 5B are always in the guide portion 3 of the male blade block 1 from the state where the male blade block 1 is retracted to the standby position to the state where the male blade block 1 is advanced to the completed cutting position. , 3 in a fitted state, and has a length necessary to guide the guide portions 3, 3. 5A female blade 6A of a female blade block having an E-shaped cross section by division
The trapezoidal portion 6Ac of a, 6Aa; 6Ab, 6Ab is an inclined surface 6Ad in which the trapezoid is gradually lowered rearward from the cutting edge line at the front end, leaving a land portion. This makes the male blade 2A
A space that is much wider than the distance T between a and 2Ba can be formed, and the discharge of cut chips can be improved. 5
Ab is a guide attached to the pillow packaging machine, and 5Ac is a seat of a tightening bolt for fixing the female blade block 5A to 5B.

As described above, the contour surface continued by the female cutting edge surface and the guide portion-corresponding surface is formed by combining the two divided surfaces to form the guide surfaces 7Aa, 7Aa, 7Ba, 7Ba and 3Aa, 3A.
The male blade block 1 can be slidably guided at a, 3Ba, 3Ba, and the strip material can be cut into a predetermined shape by the male blade and the female blade.

The operation of the punching cutting blade thus constructed will be described. The female blade block 5B is horizontally mounted at a predetermined position of a pillow packaging machine (not shown), and the male blade block 1 is fitted to the female blade block 5B, and is fastened by bolts to the horizontal operating rod in the bolt holes 1b and 1b. . Then, the female blade block 5A is fitted with the male blade block 1, and the female blade block 5A is displaced in the longitudinal direction to adjust the clearance so that the male blade block 1 slides smoothly without backlash.
Fix A.

FIG. 5 shows a band-like shape containing sugar, pepper and the like.
The pillow wrapping band W shown in a is passed from above between the inner sides 3D, 3D of both guide portions 3 of the male blade block 1 at the standby retracted position. When the center of the fused portion Wa of the pillow wrapping band W reaches the cutting position of the punching cutting blade, the feeding is stopped. The operating rod of the packaging machine is operated to move the male blade block 1 forward. When the pillow wrapping band W is biased to one side with this forward movement, the pillow wrapping band W is centered and centered by the inner taper 3D, 3D of the guide part 3, 3 and positioned between the root parts 3E, 3E. Then, the I-shaped Wb is punched out from the fused portion Wa and the pillow packaged product Wc is cut out. The cutting surface has male blades 3Ab, 3Ab; 3Bb, 3B with both ends R of the male blade
The corners are arcuate due to b. The punched chips Wb are sequentially extruded from the space formed by the inclined surfaces 6Ad, 6Bd of the female blade blocks 5A, 5B.

[0022]

Since the present invention is constructed as described above, the present invention has the following effects. According to the first aspect of the present invention, a double-sided cutting edge or one of the two cutting edges has a non-linear cutting edge such as a corrugated shape, a round mountain shape, a polygonal line, an arc, or the like other than a straight edge, so that a pillow package product having an aesthetic appearance can be obtained. it can. By not sharpening the corners of the cut portion, it is possible to prevent the human body and other pillow packages from being damaged. In addition, the taper on the inside of the guide portion enables the cut portion of the pillow packaged product to be accurately aligned, thereby improving the commercial value. It is also effective for cutting strips other than pillow packages.

According to the second aspect of the present invention, since the region of the width of the strip-shaped material to be cut is provided at the root side portion on the cutting edge side inside the guide portion, the strip-shaped material is centered at the taper portion and then cut at this constant interval portion. Even if there is a displacement due to a component force in the lateral direction due to the inclined cutting blade, the center is prevented from shifting and the cut portion of the pillow packaged product can be more accurately aligned.

According to the third aspect of the present invention, since the female blade block is slightly inclined, the fitting gap between the male blade and the female blade can be easily adjusted by moving the divided blocks in the axial direction. A beautiful cut surface can be obtained. In addition,
In the embodiment, the division is made in the vicinity of the vertical center line CL, but if the division surface can be formed with a slight inclination, the division position is free.

[Brief description of drawings]

FIG. 1 is a view showing a state in which punching and cutting blades of the present invention are combined, a is a front view and b is a right side view.

FIG. 2 is a view showing a male blade block, in which a is a front view, b is a right side view, and c is a left side view.

FIG. 3 is a diagram showing one of the divided female blade blocks, in which a is a front view, b is a right side view, and c is a plan view.

FIG. 4 is a view showing the other block of the female blade block,
Is a front view, b is a right side view, and c is a plan view.

FIG. 5 is a view showing a pillow wrapping band, in which a is a plan view in a continuous state and b is a plan view of a cut single body.

6A and 6B are views showing a conventional pillow wrapping band, in which a is a plan view in which a cutting line is drawn, b is a front view, and c is a plan view of a cut single body.

[Explanation of symbols]

1 Male blade block 2Aa, 2Ba Male blade with straight cutting edge 2Ab, 2Bb R cutting blade male blade 3Aa, 3Ba guide surface 3 Guide section 6A ridge 6Aa, 6Ba Straight cutting blade female blade 6Ab, 6Bb R cutting blade female blade 7Aa, 7Ba Guide surface 6Ac cutting edge land part 6Ad, 6Bd inclined surface 7 guide holes

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masataka Tsuda             1-1, Nakakoguchi, Oguchi-cho, Niwa-gun, Aichi Prefecture             Kanbo Co., Ltd. (72) Inventor Hiroki Furuta             1-623 Seko, Moriyama-ku, Nagoya, Aichi Prefecture               Toyo Machinery Co., Ltd. F-term (reference) 3C060 AA20 BB19

Claims (3)

[Claims] 1. A punching cutting blade for cutting a strip-shaped material, wherein the male blade block has a non-linear cutting edge line of at least one of the double-sided cutting blades having a width equal to or larger than the width of the strip-shaped material. The male blade and the double-sided cutting blade of the male blade project at both ends of the cutting blade in parallel with the moving direction of the cutting operation, and the inner spacing through which the strip passes is gradually narrowed from the tip side toward the cutting blade side for cutting. The female blade block has a guide portion for centering the strip-shaped material by movement of movement, the female blade block is fitted to the double-sided cutting blade of the male blade, and the guide portion of the male blade block outside both ends of the female blade. A punching cutting blade, characterized in that the guide portion of the male blade block and the guide hole of the female blade block are always combined in a fitted state even during cutting standby. 2. The punching cutting blade according to claim 1, wherein an inner space of the guide portion is formed substantially constant at a root portion on a cutting blade side. 3. The female blade block is a block body having a through hole formed by opposing female blades and guide holes at both ends,
The punching according to claim 1 or 2, which is divided into two parts by a surface inclined with respect to the center surface, and is capable of adjusting a fitting gap between the male blade and the female blade by axially offsetting each other. Cutting blade.