JP2002254388A - Roller with lower blade groove for slitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical roller with a lower blade groove for a slitter capable of manufacturing a large quantity of slit products by widening and lightening the slitter slitting a master roll of paper, plastic film or the like and enabling high speed rotation thereof. SOLUTION: A main shaft 2 constructing the roller 1 with lower blade groove is made of carbon fiber reinforced plastics(CFRP) formed in a cylindrical shape. A grooved piece 6 incorporated into the main shaft 2 has a twin tube structure completely and closely adhering an inner tube 3 made of carbon fiber reinforced plastics(CFRP) and an outer tube 4b made of stainless steel including lower blade groove 5 on an outer circumference surface. Plural grooved pieces 6 are incorporated into the main shaft 2 and all grooved pieces 6 are fixed within a range of length of the main shaft 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller having a lower blade groove for a slitter, which is used for slitting a plurality of products while running a wide sheet of material along a length direction in a roll. is there.

[0002]

2. Description of the Related Art A wide material such as paper, plastic film, or the like (hereinafter, referred to as a raw material in this specification).
In a slitter, a plurality of sheets are slit at predetermined width intervals along a length direction in a feed traveling process.

[0003] Conventional slitters are basically composed of an unwinding section for winding a web, a slit section for slitting the web, a winding section for winding the slit product, and a guide roller section disposed before and after the slit section. It is composed of

[0004] The raw material is mounted on the unwinding portion while being wound up on a roll, pulled out from the unwinding portion, and sent to the slit portion through the front guide roller portion. In the slit section, the web is slit at predetermined intervals, and the slit and divided products are wound on individual winding shafts each attached to the winding section via a rear guide roller section. It has become.

[0005] Various means have been adopted for slitting a raw material into a plurality of products. Among them, a plurality of razor-shaped blades or round blades (upper blades) are provided at equal intervals on the outer peripheral surface. A raw material is slit by a roller provided and provided with a lower blade groove having a predetermined width.

The roller with the lower blade groove for this slitter is L
/ D is 15 or less, length is about 3-9m, outer diameter is 200-
A metal (iron) cylindrical main shaft having a size of 600 mm and a plate thickness of 20 to 40 mm, and grooves for lower blades formed at predetermined pitch intervals and predetermined width on the outer peripheral surface along the axial direction.
It has a length of 100 to 300 mm and a plate thickness of 10 to 20 mm
And a plurality of cylindrical metal (iron) grooved pieces each having a depth of 1 to 5 mm.

Each grooved piece is slid sequentially from one side of the main shaft, and is mounted in accordance with the entire length of the main shaft. Thereafter, a plurality of fixing plates fixed at both ends of the main shaft using a plurality of bolts, and a plurality of grooved pieces located at both ends of a grooved piece integrated by abutting a plurality of pieces, for example, 6 to
Tighten and fix using eight bolts. Incidentally, a fixing ring may be interposed between the ends of the fixing plate and the grooved piece.

As described above, the plurality of grooved pieces are assembled to the main shaft by the plurality of bolts, and are fastened so as not to freely rotate or slide along the outer peripheral surface of the main shaft. A single grooved piece is integrated by incorporating a plurality of pieces into the main shaft. At this time, a large number of lower blade grooves having a predetermined width interval have a predetermined pitch interval over the entire length of the assembled grooved piece. It is arranged every time.

As described above, the lower blade grooved roller constituted by the main shaft and the grooved piece has a rotating shaft protruding from the center of the fixed plate on both sides attached to a bearing provided on a support frame of a slitter (not shown). The rollers are installed horizontally, and the entire rollers rotate at high speed in the circumferential direction. in this case,
The roller may be independently rotated by a rotary drive device such as a motor, or may be synchronously rotated in conjunction with the other mechanisms (the unwinding unit, the winding unit, the guide roller unit, and the like). Is also good.

A plurality of upper blades can change the relative position of the lower blade grooved roller installed horizontally in such a manner as to be rotatable at high speed with respect to the support base. In addition, it is installed so that it can be moved while making fine adjustments along the axial direction of the roller, and the tip of each upper blade enters the corresponding groove for the lower blade.

The upper blades are arranged at predetermined intervals, and the rollers are rotated while the tips of the upper blades are placed in the corresponding lower blade grooves of the rollers, and the original drawn out of the unwinding portion is rotated. If the web is guided between the roller and the upper blade, and the web is run in accordance with the rotation of the roller, the web is cut by the upper blade, and a product is formed that is slit at every arrangement width interval of the upper blade. Will be.

[0012]

In recent years, slit products such as paper and film have been widely used in a wide range of fields such as industry, industry, distribution industry, and the like. In view of this, it is necessary to mass-produce at a lower price.

For this purpose, for example, the present invention is applicable to a roller having a lower blade groove having an L / D of 25 and a length of 5 m.
Even if the outer diameter is slender as long as the outer diameter is 200 to 600 mm at 15 m, a long one can be used, and many products can be produced by one slitter.

On the other hand, if the conventional roller with a lower blade groove is made to be long, for example, at the same rotational speed, it becomes necessary to make the outer diameter larger than that of the product of the present invention due to the critical rotation speed. 4.6 by weight as shown in the working examples described below.
In the case of double and the moment of inertia, the value becomes ten times.

[0015] For this reason, the support base, the rotary drive device, and other auxiliary equipment must be large and robust, and the equipment cost is large and the economic burden is large. . In addition, the use of aluminum to reduce the weight of the main shaft was also examined, but it was found that the critical rotation speed was low due to low rigidity, and it was not applicable.

In order to mass-produce slit products using long and low-speed equipment or short and high-speed equipment according to the conventional technology, a large number of slitters may be installed. The installation requires a vast area and requires many workers to maintain and manage a large number of slitters, resulting in large equipment and labor costs, which is also an economic burden. Was big.

Further, since the grooved piece is made of iron, it is rusted, so that expensive plating is required. Plating the entire surface of the crests and valleys of the lower blade groove concentrates on the edge part, which is a characteristic of plating, and the plating layer becomes thicker, so after plating, it is necessary to polish the edges of many grooves. At the same time, it was not possible to achieve high accuracy, and a great deal of cost was generated.

Conventionally, when assembling the main shaft and the grooved piece, lubricating oil has been applied between the main shaft and the grooved piece, and the grooved piece has been fitted to the main shaft while being sequentially slid. However, it is very difficult to completely remove the oil after the assembly is completed, and the remaining lubricating oil may seep out, resulting in a rejected product and significant damage. If the assembling work is performed without using the lubricating oil, a galling phenomenon and rust occur between the main shaft and the grooved piece, so that disassembly is impossible.

Further, as described above, each grooved piece includes:
Contact by tightening of the bolt is screwed from the fixed plate attached to both ends of the main shaft, but are fixed, the number of those ratio L ₁ / D ₁ of the length L ₁ and the inner diameter D ₁ of the grooved piece is close to 1 10 In order to maintain the accuracy of the axial bending of the roller, which occurs because the verticality of each grooved piece is not completely zero when the pieces are butted together, the clamping force from both sides must be Experience adjustment is required in the circumferential direction.

For this purpose, it is necessary to tighten a plurality of bolts at symmetrical positions on both sides while confirming the amount of bending in the axial direction of the roller and finely adjusting the tightening force of each bolt. Yes, the assembly required a lot of time and skill.

The present invention has been made in view of the various problems of the roller with a lower blade groove used in the above-mentioned conventional slitter, and has little bending, distortion, etc., even when rotated at a high speed, and has a high economical efficiency. An object of the present invention is to provide a roller with a lower blade groove.

[0022]

In order to achieve the above-mentioned object, a roller with a lower blade groove according to the present invention comprises a plurality of rolls of a wide material (raw material) formed of a roll of paper, plastic film or the like along the length direction. The main shaft 2 incorporating grooved pieces 6a, 6, and 6b each having a lower blade groove 5 formed on the outer peripheral surface of a slitter lower grooved roller for slitting a product is a metal supporting member 7 provided at both ends. , 8 are made of carbon fiber reinforced plastic (CFRP).

Further, in a roller having a lower blade groove for a slitter for slitting a wide material (raw material) in a roll of paper, plastic film or the like along a length direction into a plurality of products, the main shaft 2 is made of carbon fiber reinforced plastic. A grooved piece 6a made of (CFRP) and fitted into the spindle 2;
Reference numerals 6 and 6b each denote a double pipe structure in which an inner pipe 3 made of carbon fiber reinforced plastic (CFRP) and an outer pipe 4 made of stainless steel having a lower blade groove 5 formed on the outer peripheral surface are completely adhered to each other.

Further, the roller with a lower blade groove according to the present invention is a roller with a lower blade groove for a slitter for slitting a wide material (raw material) such as paper or plastic film into a plurality of products along the length direction. , The main shaft 2 is made of carbon fiber reinforced plastic (CFRP), and the grooved pieces 6a, 6, 6b to be fitted into the main shaft 2, the inner tube 3 made of carbon fiber reinforced plastic (CFRP) processed with key grooves, and the outer peripheral surface And a stainless steel outer tube 4 having a lower blade groove 5 formed thereon is formed into a double tube structure in which the outer tube 4 is completely adhered. A plurality of grooved pieces 6a, 6 and 6b fitted on the main shaft 2 are interconnected by a key 10. It is like that.

Further, the roller with a lower blade groove according to the present invention
A roller with a lower blade groove for a slitter for slitting a wide material (raw material) with a roll of paper, plastic film, etc. along a length direction into a plurality of products, wherein a main shaft 2 is made of carbon fiber reinforced plastic (CFRP). The grooved pieces 6a, 6 and 6b fitted in the main shaft 2 completely connect the inner tube 3 made of carbon fiber reinforced plastic (CFRP) and the outer tube 4 made of stainless steel having the groove 5 for the lower blade formed on the outer peripheral surface. It has a double pipe structure in close contact, and a grooved piece 6a is provided at one end of the spindle 2.
6 and 6b, the supporting member 7 having the same diameter as the main shaft 2 is fixed.
A support member 8 having the same diameter as the main shaft 2 is fixed to the other end of the main shaft 2.
The plurality of grooved pieces 6a, 6, 6b fitted into
Each grooved piece 6 is fastened and fixed between the support member 7 and the support ring 11, the rubber ring 12 fitted from the support member 8 side, and the fixing ring 13 fixed to the support member 8.
a, 6, and 6b are connected by a key 10, and a support member 7 and a grooved piece 6a in contact with the support member 7 are rotationally fixed by a key 10a. Piece 6b and key 1
The rotation is fixed by 0b.

The stainless steel outer tube 4 constituting the grooved pieces 6a, 6 and 6b has an elasticity to reduce the expansion difference caused by the fact that the thermal expansion of the roller 1 in the axial direction is different from that of the main shaft 2 made of carbon fiber reinforced plastic (CFRP). The support member 8 and the fixing ring 1
3 is connected with a plurality of bolts 14 arranged in the circumferential direction, and between the respective bolts 14, the tip of a tightening bolt 15 screwed into a fixing ring 13 is pressed against the support member 8 and a lock nut is attached to the bolt 15. 16, the compression force of the rubber ring can be adjusted so that the support ring 11 does not rotate and slide due to the frictional force of the rubber ring.

[0027]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 5 show an embodiment of a roller with a lower blade groove for a slitter of the present invention. The roller 1 with a lower blade groove of the present invention is made of carbon fiber reinforced plastic (CFRP) to reduce the weight. A main shaft 2 formed in a long cylindrical shape, and an inner tube 3 made of carbon fiber reinforced plastic (CFRP) and an outer tube 4 made of stainless steel, which have high rigidity enough to withstand high-speed rotation. A single cylindrical grooved piece 6 having a double-pipe structure and formed with lower blade grooves 5 at a predetermined pitch and a predetermined width on the outer peripheral surface of the outer pipe 4, and a disk-shaped piece fixed to both sides of the main shaft 2. And metal support members 7 and 8.

The plurality of grooved pieces 6 precisely assembled within the length range of the main shaft 2 are connected to each other via a key, and the grooved pieces 6 located at both ends and the support member 7 and a support described later. The ring 8 and the ring 8 are rotationally fixed via a key, and all the grooved pieces 6 are integrally fixed between the support member 7 and the support ring 8.

The main shaft 2 having a smooth surface is a long body having a total length of 5 to 15 m and an outer diameter of 200 mm.
It has a size of up to 600 mm. In addition, the single grooved piece 6 is integrated by slightly fitting the inner pipe 3 into the outer pipe 4 with a tight fit to form a double pipe. For this reason, the outer surface of the inner tube 3 and the inner surface of the outer tube 4 are finished to a smooth surface, and when the inner tube 3 and the outer tube 4 are fitted together, they are connected by tight-fitting surface contact, and the two are in opposite directions. It does not rotate or slide. The length of the inner tube 3 is slightly shorter than that of the outer tube 4 due to the thermal expansion of the material. Further, the inner diameter of the inner tube 3 is set to a size that can be fitted with a clearance fit with a slight gap to the outer diameter of the main shaft 2.

The main components of the roller with a lower blade groove according to the present invention are as described above. Next, the assembling procedure will be described. As shown in FIGS. 1 and 2, the support members 7 and 8 are fixed to both ends of the main shaft 2 in advance using an adhesive or bolts. The outer diameter of one support member 7 is larger than the outer diameter of the main shaft 2 as shown in FIGS.
The grooved pieces 6a, 6 and 6b are formed to have the same diameter as the outer diameter. The outer diameter of the other support member 8 is as shown in FIGS.
As shown in the figure, the main shaft 2 has the same diameter as the outer diameter.

Therefore, as shown in FIG.
A, 6, and 6b can be fitted to the main shaft 2 through the support member 8, and the plurality of grooved pieces 6 may be fitted to the main shaft 2 from the support member 8 side and slid in the direction of the support member 7. As a result, as shown in FIGS. 1 and 3, the end face of the grooved piece 6 a fitted first does not come out of contact with the annular side surface of the support member 7, and a plurality of grooved pieces fitted thereafter. The end faces of 6a, 6, 6b are brought into abutting condition.

FIG. 4 shows a single grooved piece 6a, 6, 6b.
Are disassembled and shown, and the grooved pieces 6a, 6, 6
Key grooves 9 are formed at symmetrical positions on both sides of the inner tube 3 constituting b. In the key grooves 9, half of the length of the rectangular or elliptical key 10 can be inserted. I have. When fitting the grooved pieces 6a, 6, 6b to the main shaft 2 as described above, the adjacent grooved pieces 6a, 6, 6b
If the key 10 is inserted into the key groove 9 between the grooves and the grooved pieces 6a, 6, 6b are sequentially fitted in the same manner, all the grooved pieces 6a, 6, 6b are inserted through the key 10 as shown in FIG. Are connected and fixed in series.

After fitting the required number of grooved pieces 6a, 6, 6b to the main shaft 2, as shown in FIGS. 2, 3 and 5, a metal support ring 11 and an elastic rubber ring 12 are formed. Are sequentially fitted to the main shaft 2 through the support member 8 and finally a metal fixing ring 13 having an L-shaped cross section
Are fitted to the support member 8, and a plurality of the support members 8 and the fixing rings 13 are arranged on the circumference in FIG. 5 with the annular end face of the fixing ring 13 abutting against the annular side surface of the rubber ring 12. Connected using eight bolts 14,
The rubber ring 12 is tightened in a compressed state.

At this time, the support ring 11 and the grooved piece 6
b are connected by a key 10b and a support ring 11
Does not rotate with respect to the main shaft 2 due to the frictional force of the rubber ring. Therefore, all the grooved pieces 6a, 6, 6b are connected to the support members 7, 8 at both ends of the main shaft 2 and do not rotate.

Accordingly, the plurality of grooved pieces 6 a, 6, 6 b fitted on the main shaft 2 include the support member 7 and the support ring 1.
1. Compressed rubber ring 12 and fixing ring 13
To be in a fixed state. Then, the plurality of grooved pieces 6 are connected and fixed between the support member 7 and the support ring 11 in a compressed state due to the elasticity of the rubber ring 12 that tends to expand.

As described above, the support member 8 and the fixing ring 1
5 is connected to the fixing ring 13 between the bolts 14 by screwing the fastening bolts 15 into the fixing ring 13 as shown in FIG. Lock nut 16
To maintain the connected and fixed state of the support member 8 and the fixing ring 13.

The plurality of grooved pieces 6 a, 6, 6 b are arranged within the length of the main shaft 2, that is, the support member 7 and the support ring 1.
1. Since the grooved pieces 6a, 6 and 6b are fixed between the fixing ring 13 with the rubber ring 12 interposed therebetween and the grooved pieces 6a, 6 and 6b are connected and fixed via the key 10, the grooved pieces 6
a, 6 and 6b do not freely rotate or slide with respect to the main shaft 2.

When a plurality of grooved pieces 6a, 6, 6b are mounted on the main shaft 2 as described above, the main shaft 2 and the grooved pieces 6
The lengths of a, 6, and 6b are unified.
For example, when the total length of the main shaft 2 is 8100 mm and the single grooved pieces 6 a, 6, 6 b are 300 mm long, 27 grooved pieces 6 a, 6, 6 b with respect to the main shaft 2 are provided.
Will be set.

This can be achieved by changing the length of the main shaft 2 to a length other than 8100 mm by changing the length of the grooved pieces 6a, 6, 6b, or by changing the number of grooved pieces 6a, 6, 6b. Become. The lower blade grooves 5 having a predetermined width interval formed between the plurality of grooved pieces 6a, 6, 6b are arranged at predetermined pitch intervals over the entire length of the set grooved pieces 6a, 6, 6b. Will be done.

The carbon fiber reinforced plastic (CFR) which is the main shaft 2 used in the roller 1 having the lower blade groove described above.
The material of P) is most preferably a highly rigid carbon fiber. Further, depending on the required physical properties, usually rigid carbon fibers can be used. The same applies to the material of the inner tube 3 constituting the grooved pieces 6a, 6, 6b.

Since a rotary shaft 17 projects in the center of both the support members 7 and 8 in a horizontal outward direction, the rotary shaft 17 is attached to a bearing of a support frame of a slitter (not shown), and is used alone or in another. The roller 1 may be rotated at a high speed in synchronization with the mechanism. As in the conventional case, the material is moved between the roller 1 with the lower blade groove and the plurality of upper blades at a high speed, so that a plurality of the raw material is obtained. Products will be separated. The positional relationship between the lower blade grooved roller 1 and the plurality of upper blades, the slitting operation, and the like are the same as those in the related art.

In comparison between the roller with the lower blade groove used in the conventional slitter and the roller with the lower blade groove according to the present invention, Table 1 shows the performance comparison table of the roller alone, and Tables 2 and 3
Is a comparison table in use and handling, and Table 4 is a comparison table of economic effects and composite performance. As a result, the roller 1 with the lower blade groove according to the present invention can rotate at high speed even if it is long without increasing the outer diameter, and can slit a wide raw material at high speed. Further, the outer diameter, weight, and moment of inertia of the roller can be reduced, and maintenance such as assembly and disassembly can be easily performed without the need for a craftsman, thereby improving the economic effect as a whole.

[0043]

[Table 1]

[0044]

[Table 2]

[0045]

[Table 3]

[0046]

[Table 4]

[0047]

According to the present invention described above, the main shaft 2 constituting the roller 1 with the lower blade groove for the slit is made of carbon fiber reinforced plastic (CFRP), so that the overall length is long. It is also lightweight and has high rigidity, can reduce the deflection caused by its own weight, and can withstand high-speed rotation.

In comparison with a conventional roller with a lower blade groove for a slitter made of iron, it is possible to rotate at high speed even if it is long without increasing the outer diameter, and it is possible to slit a wide raw material at high speed. For this reason, the weight and moment of inertia can be reduced, and the supporting stand and the rotary drive device and other auxiliary equipment can be reduced in size and weight, and the equipment cost can be reduced, and the rotary drive power cost can be reduced. Understand, the overall economic effect can be improved.

A single grooved piece 6a fitted into the main shaft 2,
Reference numerals 6 and 6b denote a double-pipe structure in which an inner pipe 3 made of carbon fiber reinforced plastic (CFRP) and an outer pipe 4 made of stainless steel having a lower blade groove 5 formed on the outer peripheral surface are fitted. By fitting the inner tube 3 into the main shaft 2 with a clearance fit with a small gap, it is possible to assemble with high accuracy and good workability, and to achieve reproducibility of accuracy at the time of reassembly.

Since stainless steel is not used for the outer tube 4 of the grooved pieces 6a, 6 and 6b, rust does not occur. Therefore, expensive plating is applied to narrow grooves as in the past, and polishing is required for each groove. Since the lubricating oil is not used for assembling, the lubricating oil is exuded and the product is not stained, so that there is no possibility that a great loss occurs.

Further, at one end of the main shaft 2, a supporting member 7 having a diameter larger than that of the main shaft 2 and having the same diameter as the grooved pieces 6a, 6 and 6b is fixed, and the other end of the main shaft 2 having the same diameter as the main shaft 2. The support member 8 is fixed, and the plurality of grooved pieces 6a, 6, 6b are fitted into the main shaft 2 from the support member 8 side, and then the support ring 11, the rubber ring 12, and the fixing ring 13 are fitted into the support member 8 side. By fixing the fixing ring 13 and the support member 8 with a plurality of bolts 14, the grooved pieces 6a,
It is not necessary to finely adjust the tightening force of the bolt 14 on the bolts 6 and 6b, and the assembly can be easily performed in a short time.

The adjacent grooved pieces 6a, 6, 6b
All the grooved pieces 6a, 6, 6b are connected integrally by the key 10, and each grooved piece 6a, 6, 6b is singly connected by the elastic action of the compressed rubber ring 12. It does not rotate or slide. In addition, the support member 7 and the support ring 11 and the corresponding grooved pieces 6a and 6b are connected to the keys 10a and 10b.
By rotating and fixing at b, the support member 7, the support ring 11, and all the grooved pieces 6a, 6, 6b are rotated and fixed along the axial direction.

Further, by pressing the tip of a bolt 15 screwed into the fixing ring 13 between the bolts 14 against the support member 8 and tightening the lock nut 16 on the bolt 15, the roller 1 is rotated at a high speed. The bolt 14 does not become loose due to vibration.

Further, the stainless steel outer tube 4 thermally expands in the axial direction of the lower blade grooved roller 1 while the raw material is slit into a plurality of products while rotating the lower blade grooved roller 1 at a high speed. However, the expansion is absorbed by the rubber ring 12 and does not hinder the original fabric slit.

[Brief description of the drawings]

FIG. 1 is an overall external view showing an embodiment of a roller with a lower blade groove of the present invention.

FIG. 2 is a perspective view of a main shaft used for a roller with a lower blade groove according to the present invention.

FIG. 3 is a sectional view showing an assembled state of the roller with a lower blade groove according to the present invention.

FIG. 4 is a perspective view of a state in which a single grooved piece is disassembled.

FIG. 5 shows a state in which a grooved piece is tightened, and is AA
It is sectional drawing of the principal part which followed the line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower blade grooved roller 2 Main shaft 3 Inner pipe 4 Outer pipe 5 Lower blade groove 6 Groove piece 6a Groove piece 6b Groove piece 7 Support member 8 Support member 9 Key groove 10 Key 10a Key 10b Key 11 Support ring 12 Rubber ring 13 Fixing ring 14 Bolt 15 Tightening bolt 16 Lock nut 17 Rotary shaft

Continued on the front page (72) Inventor Kiyoshi Isobe 7-26-2-101, Funabashi, Setagaya-ku, Tokyo (72) Inventor Atsushi Nagahori 3-8-901, Daikancho, Hiratsuka-shi, Kanagawa Prefecture (72) Inventor Akihiko Yoshitani Chiba Prefecture 2-12-3-301, Sakuradai, Shirai-machi, Inba-gun (72) Inventor Michihiro Fujimura 1-11-23-102, Futamata, Ichikawa-shi, Chiba (72) Inventor Takashi Nakamura 33-4-602, Kibashi Nishinaka, Kihata, Uji-shi, Kyoto (72) Inventor Keizo Narita 13-28 Mibu Palmanomiyacho, Nakagyo-ku, Kyoto-shi, Kyoto (72) Inventor Masaru Ueura 16-79 Ogura-Naranakayamadacho, Fushimi-ku, Kyoto-shi F term (reference) 3C027 BB01 BB09 TT04 TT07

Claims (6)

[Claims] 1. A lower blade grooved roller for a slitter for slitting a wide material (raw material) such as paper, plastic film or the like into a plurality of products along a length direction. The grooved pieces 6a, 6, 6 formed with 5
2. A roller with a lower blade groove for a slitter, wherein the main shaft 2 incorporating b is made of carbon fiber reinforced plastic (CFRP) in a cylindrical portion to which metal supporting members 7 and 8 provided at both ends are fixed. 2. A roller with a lower blade groove for a slitter for slitting a wide material (raw material) such as paper or plastic film into a plurality of products along a length direction, wherein a main shaft 2 is made of carbon fiber reinforced plastic. (CFRP) and grooved pieces 6a, 6, 6b to be fitted into the main shaft 2
Is an inner pipe 3 made of carbon fiber reinforced plastic (CFRP)
And a stainless steel outer tube 4 having a lower blade groove 5 formed on the outer peripheral surface.
A roller with a lower blade groove for slitters, characterized in that it has a double-pipe structure that is completely in close contact with the roller. 3. A roller with a lower blade groove for a slitter for slitting a wide material (raw material) in the form of a roll of paper, plastic film or the like along a length direction into a plurality of products. (CFRP) and grooved pieces 6a, 6, 6 to be fitted into the main shaft 2.
b, Carbon fiber reinforced plastic (CFR) with keyway processing
P) inner pipe 3 and a stainless steel outer pipe 4 having a lower blade groove 5 formed on the outer peripheral surface thereof have a double pipe structure in which the inner pipe 3 is completely adhered to the inner pipe 3, and a plurality of grooved pieces 6 a fitted into the main shaft 2. 6. Rollers with lower blade grooves for a slitter, characterized in that the rollers 6 and 6b are interconnected by a key 10. 4. A roller with a lower blade groove for a slitter for slitting a wide material (raw material) in a roll of paper, plastic film or the like along a length direction into a plurality of products, wherein a main shaft 2 is made of carbon fiber reinforced plastic. (CFRP)
The grooved pieces 6a, 6, 6b fitted into the main shaft 2 are:
An inner pipe 3 made of carbon fiber reinforced plastic (CFRP),
A stainless steel outer tube 4 having a lower blade groove 5 formed on the outer peripheral surface is completely adhered to a double tube structure, and a support member 7 having the same diameter as the grooved pieces 6a, 6, 6b is fixed to one end of the main shaft 2. At the same time, a support member 8 having the same diameter as the main shaft 2 is fixed to the other end of the main shaft 2, and a plurality of grooved pieces 6a fitted into the main shaft 2;
6 and 6b are fastened and fixed between the support member 7 and the support ring 11, the rubber ring 12 fitted from the support member 8 side, and the fixing ring 13 fixed to the support member 8, and each grooved piece 6a, 6 , 6b are connected by a key 10, and the support member 7 and the grooved piece 6a in contact with the support member 7 are rotationally fixed by the key 10a. The support ring 11 and the grooved piece 6 in contact with the support ring 11 are also fixed.
a roller having a lower blade groove for a slitter, wherein the roller b is rotatably fixed by a key 10b. 5. The stainless steel outer tube 4 forming the grooved pieces 6a, 6, 6b has a difference in expansion due to a difference in thermal expansion of the roller 1 in the axial direction from that of the main shaft 2 made of carbon fiber reinforced plastic (CFRP). The roller with a lower blade groove for a slitter according to claim 4, wherein the roller can be absorbed by a rubber ring 12 having elasticity. 6. The supporting member 8 and the fixing ring 13 are connected by a plurality of bolts 14 arranged in the circumferential direction, and support the tip of the tightening bolt 15 screwed into the fixing ring 13 between the bolts 14. It is characterized in that the compression force of the rubber ring can be adjusted by pressing the lock nut 16 on the bolt 15 while being pressed against the member 8, so that the support ring 11 does not rotate and slide due to the friction force of the rubber ring. The roller with a lower blade groove for a slitter according to claim 4.