JP2001001419A - Ruling and grooving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small, compact ruling and grooving device for ruling and grooving with good accuracy. SOLUTION: In a ruling and grooving device, two units of cutter heads 3, 4 and 33, 34, respectively upper and lower, rotating relatively in the reverse direction are set at intervals in the transfer direction, and also grooving cutters T1 and T3 formed of grooving blades 7a and 37a and a supporting blade 37b, and also ruling tools T2 and T4 formed of male ruling lines 9 and 38 and female ruling lines 10 and 39 are set between respective a pair of cutter heads 3, 4 and 33, 34, respectively upper and lower, so that the ruling and grooving can be carried out on the same position. Thus the processing accuracy is improved and the device is formed into the small and compact shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scoring and grooving apparatus for performing scoring and grooving on a sheet such as a corrugated cardboard sheet traveling in one direction.

[0002]

2. Description of the Related Art FIG. 10 shows a blank 7 for forming a cardboard box.
Indicates 0. In this blank 70, a pair of side walls 71 and a pair of end walls 72 are alternately provided in one direction via a vertical ruled line b ₁ , and are joined to a side edge of one side wall 71 via a vertical ruled line b _2. Are provided on both side edges of the side walls 71 at horizontal ruled lines a ₁ ,
a ₂ , an outer flap 77 is continuously provided through each end wall 72.
Are provided with inner flaps 79 at both end edges via horizontal ruled lines a ₁ and a ₂ .

[0003] A blank 70 as described above is shown in FIG.
The cardboard sheet S shown in FIG. The corrugated cardboard sheet S, which is a forming material, is provided with two horizontal ruled lines a ₁ and a ₂ parallel to the side edges, and the blank 70 is formed by scoring and grooving the corrugated cardboard sheet S. .

[0004] A processing device for crease and grooving of a corrugated cardboard sheet S, for example, as described in Japanese Utility Model Publication No. Sho 61-3615, is provided on a corrugated cardboard sheet transfer path.
A ruled roll and a slotter roll are provided at intervals in the sheet transport direction, and after the corrugated cardboard sheet is scored by the ruled roll, it is first inserted by a pair of cutting blades attached to the outer periphery of the slotter roll. Slots are provided at both ends on the ruled line by groove cutting.

[0005] In the above processing apparatus, a pair of cutting blades are attached to the outer periphery of the slotter roll when forming the blank 70 shown in FIG. Only one cutting blade is attached to the outer periphery.

[0006]

However, in the above-mentioned conventional processing apparatus, since the crease and the grooving are performed separately, there is a disadvantage that the apparatus becomes large.

Here, in the processing apparatus, when the corrugated cardboard sheet is deeply creased, creases are generated. Therefore, usually, two sets of ruled line rolls are moved in the transfer path of the corrugated cardboard sheet in the transfer direction of the sheet. Provided at intervals, shallow crease processing is performed by crease rolls provided on the upstream side, and then deep crease processing is performed by crease rolls on the downstream side. In this case, the processing apparatus is larger. There is a disadvantage of becoming.

In addition, since the crease-making position and the grooving position for the corrugated cardboard sheet are displaced in the direction of transport of the corrugated cardboard sheet, when the feeding accuracy of the corrugated cardboard sheet is poor or when the positioning accuracy of the cutting blade is poor. may cause vertical lines b ₁ and the groove C position shift in the width direction of the cardboard sheets in mutual, it is difficult to perform highly accurate machining.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact ruled-grooving device capable of performing high-precision processing without displacement between vertical ruled lines and grooves.

[0010]

In order to solve the above-mentioned problems, according to the present invention, a pair of blade heads which are relatively rotated in opposite directions are provided vertically on a sheet transport path, and one of the blade heads is provided. On the outer periphery of the grooved blade and the receiving blade, one blade of a grooving blade and one rule of a crease tool composed of a male rule and a female rule are provided in the circumferential direction, and the other blade head is On the outer periphery, a configuration is adopted in which the other blade of the groove cutting tool and the other rule of the crease tool are provided in the circumferential direction.

[0011] The scoring and grooving device having the above-described structure is
The pair of upper and lower blade heads are relatively rotated in opposite directions, and the male and female creases of the crease tool provided on the upper and lower blade heads are used to score the sheet fed between the blade heads. A groove is formed by performing a groove cutting process on an end on the ruled line with a cutting blade.

As described above, since the scoring and grooving can be performed by the pair of upper and lower blade heads, the apparatus can be reduced in size and size, and the scoring position and the grooving position can be set. Since they are located at the same position, it is possible to perform high-precision processing without displacement between the ruled line and the groove in the sheet width direction.

Here, if the pair of upper and lower blade heads having the grooving blades and the scribing tools on the outer periphery are provided at intervals in the sheet transfer direction, the blank shown in FIG. 10 can be formed. . In this case, the depth of the ruler in the pair of upper and lower blade heads provided on the downstream side in the sheet transfer direction is made deeper than the depth of the ruler in the pair of upper and lower blade heads provided on the upstream side. By doing so, it is possible to prevent creases.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a transport path of a sheet S transported in the direction of an arrow includes a first processing section P ₁ and a second processing section P for performing scoring and grooving on the sheet S. ₂ is provided at intervals in the transport direction of the sheet S, feeding mechanism 50 is provided between the first processing unit P ₁ part and the second processing section P _2.

[0016] The first processing unit P ₁ is a pair of rotary shafts 1, 2 are provided above and below. The pair of rotating shafts 1 and 2 are relatively rotated in opposite directions as indicated by arrows in FIG.

A plurality of blade heads 3, 4 are mounted on each of the pair of rotating shafts 1, 2. Each of the blade heads 3 and 4 rotates together with the rotating shafts 1 and 2 and is capable of adjusting its position in the axial direction.

As shown in FIG. 2, a circular blade mounting surface 5 is formed on the outer periphery of each blade head 3, 4 and a flange 6 is provided at one end of the blade mounting surface 5.

A grooving blade T ₁ and a scoring tool T ₂ are mounted on the upper and lower blade heads 3 and 4 facing each other. Here, 2 grooving tool T ₁ is a grooving blade 7a, which the grooving blades 7a are located opposite each other with a fittable spacing
As shown in FIG. 1, a parting edge 8 is provided at one end of the outer periphery of the groove cutting edge 7a.

On the other hand, the ruler T ₂ comprises a male ruler 9 and a female ruler 1.
The male ruler 9 is provided with a crest ridge 11 on the outer circumference thereof, while the female ruler 10 is provided with an elastic body 12 on the outer circumference thereof. Note that a concave portion formed of an annular groove may be formed on the outer periphery of the female ruler 10 instead of the elastic body 12.

[0021] and the grooving blades 7a grooving tool T ₁ on the blade attachment surface 5 of the outer periphery of the upper blade head 3, and Mesukei 10 ruling insertion tool T ₂ is attached to the circumferential direction. When mounting the grooving blade 7a, two discs 13a and 13b are abutted on both sides of the grooving blade 7a, and the flange 6
A bolt insertion hole 14 is formed in one of the disks 13a and the groove cutting blade 7a.
5 is inserted, and a bolt 15 is screwed into a screw hole 16 provided in the other disk 13b so that the bolt 15 is screwed. It is attached to be located in.

In mounting the female rule 10, a bolt insertion hole 17 is formed in the flange 6 of the blade head 3, and the female rule 1 is formed.
The screw hole 18 is provided on the bolt 0 so as to face the bolt insertion hole 17, and the bolt 19 inserted into the bolt insertion hole 17 is screwed into the screw hole 18 to be tightened.

[0023] and two receiving blades 7b grooving tool T ₁ on the blade attachment surface 5 of the outer periphery of the lower blade head 4, ruling insertion tool T ₂
Are attached in the circumferential direction.

When the two receiving blades 7b are mounted, a spacer 20 is provided between the receiving blades 7b to provide a space between the two receiving blades 7b so that the groove cutting blade 7a can be fitted. A disk 21 against the side of the
A bolt insertion hole 22 is formed in one or two receiving blades 7 b and the spacer 20, and a bolt 23 inserted in the bolt insertion hole 22 is screw-engaged with a screw hole 24 formed in the flange 6 of the blade head 4. I am trying to tighten it.

When attaching the male ruler 9, as shown in FIG. 3, a disk 25 is abutted against the side surface of the male ruler 9, and a bolt insertion hole 26 is provided in the disk 25 and the male ruler 9, and The bolt 27 inserted into the insertion hole 26 is screwed into a screw hole 28 formed in the flange 6 of the blade head 4 to be tightened.

[0026] Here, the blade 7b receives a slotting blade 7a of the groove cutting tool T _1, as shown in FIG. 1, when the relative reverse rotation of the upper and lower blade heads 3 and 4, the groove cutting blades 7a Is 2
The oppositely arranged mounting is provided so as to penetrate between the receiving blades 7b. On the other hand, the male ruler 9 and the female ruler 10 are also configured to oppose when the blade heads 3, 4 rotate. Circumferential length L ₀ of the outer periphery of the Okei 9 and Mesukei 10, the two rows dimension between the lateral ruled lines a _1, a ₂ of the sheet S shown in FIG. 9 (I) and L _1, each horizontal ruled line When the distance between a ₁ and a ₂ and the sheet side edge is L ₂ , the length is such that L ₀ ≧ L ₁ + L ₂ .

As shown in FIG. 1, the second processing section P ₂ pair of rotary shafts 31 and 32 provided above and below, the rotary shaft 3
1 and 32 are relatively rotated in opposite directions as indicated by arrows.

A plurality of blade heads 33, 34 are mounted on the rotating shafts 31, 32, respectively.
The reference numeral 34 rotates together with the rotation shafts 31 and 32, and the position of the reference numeral 34 can be adjusted in the axial direction.

As shown in FIG. 4, each blade head 33, 3
A circular blade mounting surface 35 is formed on the outer periphery of 4, and a flange 36 is provided at one end of each blade mounting surface 35.

A grooving blade T ₃ and a scoring tool T ₄ are mounted between the vertically opposed blade heads 33 and 34. Grooving tool T ₃ is composed of a similarly grooved edge 37a and two receiving blades 37b and grooving tool T ₁ of the foregoing, also ruling insertion tool T ₄ is also in the same manner as ruling insertion tool T ₂ of the above Male rule 3
8 and a female ruler 39, a ridge 40 for forming a rule is formed on the outer circumference of the male ruler 38, and an elastic body 41 is formed on the outer circumference of the female ruler 39.
Is provided.

Here, the width dimension of the ridge 40 of the male rule 38 is
Smaller than the width of the ridges 11 of Okei 9 of the ruling insertion tool T _2, the outer diameter is slightly larger than the outer diameter of the protrusion 11 of Okei 9 of ruling insertion tool T _2.

The blade mounting surface 3 on the outer periphery of the upper blade head 33
Grooving blade 37a of the groove cutting tool T ₃ to 5 and ruling insertion tool T ₄
Female crease 39 is attached in the circumferential direction, and the groove cutting blade 37
a is a parting blade 4 provided at one end of the outer periphery as shown in FIG.
2 is a mounting located at the rear part in the rotational direction. On the other hand, as shown in Figure 4 on the tool mounting surface 35 of the outer periphery of the lower blade head 34, two receiving blades 37b of the groove cutting tool T ₃
And Okei 38 ruling insertion tool T ₄ is mounted in the circumferential direction.

[0033] The mounting of Okei 38 and Mesukei 39 of the blade 37b and ruling insertion tool T ₄ receives the grooving blade 37a of the groove cutting tool T ₃ is grooving tool T ₁ shown in FIGS. 2 and 3
And is the same as the mounting of the ruling insertion tool T _2, its description is omitted with the same reference numerals to the same components.

As shown in FIG. 1, the first processing part P ₁ and the second processing part P ₁
The feeding device 50 provided between the processing portions P ₂ is provided with a guide plate 52 for guiding the movement of the sheet S above the suction duct 51, and a position opposed to a plurality of suction holes 53 formed in the guide plate 52. The feed roller 54 is provided so that a part of its outer periphery protrudes above the surface of the guide plate 52, and rotates the feed roller 54 in a state of applying a suction force to the suction hole 53. and to send the sheet S toward the second processing section P _2.

The feeding device 50 is not limited to this,
A pair of feed rollers may be vertically opposed to each other, and the sheet S may be fed by rotation of the feed rollers while holding the sheet from above and below by the pair of feed rollers.

[0036] The ruling insertion grooving apparatus shown in the embodiment consists of the structure described above, during processing of the sheet S shown in FIG. 9 (I), the pair of upper and lower rotary shaft of the first processing unit P ₁ shown in FIG. 1 1, 2 and the second processing unit a pair of upper and lower rotating shaft 31 of the P _2,
32 is rotated in the direction of the arrow shown in the figure, and the sheet S is moved upward with one side edge parallel to the _two horizontal ruled lines a ₁ and a ₂ , the upper blade head 3 and the lower blade head of the first processing portion P _1. Send it between four.

[0037] In this case, parting Ri blade 8 of the outer periphery is horizontal rule a ₂ facing the transport direction rear side of the sheet S in the first processing section P ₁ of the upper blade head 3 mounted grooving blades 7a, also ,
In response to feeding of the sheet S so that parting Ri blade 42 of the outer periphery of the second processing section P ₂ of the upper blade attached to the head 33 the groove cutting edge 37a is horizontal ruled line a ₁ and facing the transport direction front sheet S The phases of the upper blade heads 3 and 33 are adjusted in advance.

[0038] When the sheet S is fed between the first processing section P ₁ of the upper and lower blade heads 3 and 4, the sheet S, as shown in FIG. 3, the transport direction by Okei 9 of ruling insertion tool T ₂ been crushed from the tip with ruling insertion is performed, groove cutting is performed by the groove cutting blades 7a and two receiving blades 7b grooving tool T _1, as shown in FIG. 9 (II), the seat S has a vertical ruled line b orthogonal to the horizontal ruled lines a ₁ and a _2, and a vertical ruled line b
A groove C is formed at the rear end in the upper transfer direction.

The sheet S that has passed between the upper blade head 3 and the lower blade head 4 of the first processing part P ₁ is fed by the feeder 50 between the upper blade head 33 and the lower blade head 34 of the second processing part P _2. The grooving process is performed on the leading end of the vertical ruled line b formed in advance by the grooving blade 37a attached to the upper knife head 33 and the two receiving blades 37b attached to the lower knife head 34 in the transfer direction. Will be applied.

[0040] Figure 5 is a second groove cutting edge 37a of the processing unit P ₂
And the two receiving blades 37b show a state in which the leading end of the sheet S in the transport direction is subjected to grooving. When the sheet S is further fed from that state, the female ruler attached to the upper blade head 33 is shown. As shown in FIGS. 7 and 8, the crease processing is performed again on the vertical ruled line b of the sheet S by the 39 and the male rule 38 attached to the lower blade head 34.

As the sheet S passes between the upper blade head 33 and the lower blade head 34 of the second processing portion P ₂ ,
As shown in FIG. 9 (III), the sheet S has a vertical ruled line b and grooves C and C ′ formed at both ends of the vertical ruled line b.
The blank 70 shown in FIG. 10 is formed.

As described above, by feeding the sheet S between the upper blade head 3 and the lower blade head 4 of the first processing portion P ₁ and between the upper blade head 33 and the lower blade head 34 of the second processing portion P ₂ , The scoring process and the groove cutting process at both ends on the ruled line can be performed, and the blank 70 shown in FIG. 10 can be easily formed.

Since the first processing section P ₁ and the second processing section P ₂ provided in the sheet S transfer direction perform the scoring and grooving, it is possible to reduce the size and size of the apparatus. In addition, since the crease and the grooving are performed at the same position, the ruled line and the groove are not displaced in the width direction of the sheet, and high-precision processing can be performed.

[0044] In the embodiment, a groove is formed C in the transport direction rear of the seat S by the groove cutting edge 7a which is attached to the first processing unit P ₁ of the upper blade head 3, the second processing section P ₂ upper blade head Although a groove C 'in grooving blade 37a attached to the transport direction front portion of the seat S to 33, a groove is formed in the transport direction front portion of the seat S in the first processing section P ₁ of the groove cutting edge 7a, it may be formed a groove in the transport direction rear of the seat S in the second processing section P ₂ of the groove cutting blades 37a.

In the embodiment, the ruler T ₂ , T
_Four male creases 9, 38 are attached to the lower knife heads ₄ , 34,
Although the female rules 10 and 39 are mounted on the upper blade heads 3 and 33, the mounting of the male rules 9 and 38 and the female rules 10 and 39 may be reversed.

[0046]

As described above, according to the present invention, a grooving blade comprising a grooving blade and a receiving blade and a crease tool comprising a male crease and a female crease are provided on a pair of blade heads arranged vertically. Since the sheets are attached to each other, the sheet can be scored, and the edge of the scored ruled line can be cut, and the apparatus can be reduced in size and size.

Further, since the crease processing and the grooving processing are performed at the same position, the ruled lines and the grooves do not shift in the sheet width direction, and the processing can be performed with high accuracy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a crease groove cutting device according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is an enlarged sectional view showing a part of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a longitudinal sectional front view showing a state in the middle of processing a sheet.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a longitudinal sectional front view showing a state where a sheet is being processed by a second processing unit in FIG. 1;

FIG. 8 is an enlarged sectional view showing a part of FIG. 7;

FIGS. 9 (I) to (III) are front views showing stepwise processing states of a corrugated cardboard sheet.

FIG. 10 is a front view showing a blank for forming a cardboard box;

[Explanation of symbols]

P ₁ first machining portion P ₂ second working portions 3 and 4 blade head T ₁ grooving blade 7a grooving blades 7b receiving blades T ₂ ruling insertion tool 9 Okei 10 Mesukei 33,34 blade head T ₃ grooving tool 37a grooving blade 37b receiving blades T ₄ ruling insertion tool 38 Okei 39 Mesukei

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E075 AA04 BA05 CA01 DA04 DA14 DA32 DB02 DB07 DB12 DB22 DB26 EA01 GA02

Claims (3)

[Claims] A pair of blade heads, which are relatively rotated in opposite directions, are provided vertically on a sheet transfer path, and a groove cutting blade including a groove cutting blade and a receiving blade is provided on an outer periphery of one of the blade heads. And one crease of a crease tool comprising a male crease and a female crease is provided in a circumferential direction, and the other blade of the grooving cutter is provided on an outer periphery of the other cutter head, and the crease is provided. A crease groove cutting device provided with the other rule of the tool in the circumferential direction. 2. The scoring and grooving apparatus according to claim 1, wherein the pair of upper and lower knife heads having a grooving cutter and a scoring tool on the outer periphery are provided at intervals in a sheet conveying direction. 3. A scoring depth of a scoring tool in a pair of upper and lower blade heads provided on the downstream side in the sheet transport direction,
3. The scoring grooving device according to claim 2, wherein the scoring depth of the scoring tool in the pair of upper and lower blade heads provided on the upstream side is made deeper.