JPH0737595U - Slitter - Google Patents

Abstract

(57) [Summary] [Purpose] By using an upper blade with a simple structure, it does not cause distortion, twisting, bending, etc. in the member to be cut made of metal foil such as copper foil, with high cutting accuracy, To provide a slitter capable of improving durability. A slitter comprising first and second rotating shafts arranged in parallel to each other, and a plurality of lower blades and upper blades fixed to the first and second rotating shafts at predetermined intervals, respectively. A slitter in which a deep groove is formed on the circumferential surface of the thin disk-shaped upper blade, and the outer peripheral portion of the upper blade is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of both sides of the deep groove. Further, a pair of deep grooves were formed on the circumferential surface of the thick disk-shaped upper blade, and the outer peripheral portion of the upper blade was pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove. Further, a deep groove is formed on the circumferential surfaces of the pair of thin disks, and a spacer having a predetermined thickness is interposed between the pair of thin disks to form an upper blade, and an outer peripheral portion of the upper blade is formed. Is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slitter for cutting a thin plate material such as a metal foil into a predetermined width, and more particularly to a slitter equipped with a rotary upper blade that does not generate a burr or a wavy distortion in a cut portion such as a metal foil.

[0002]

[Prior art]

 As shown in FIGS. 5 and 6, the conventional slitter has a plurality of rotary shafts arranged in parallel with each other and having a uniform outer diameter and a constant thickness on the first rotary shaft 1. The lower blade 3 and the lower blade spacer 4 are alternately and closely attached to each other, and fixedly attached, and a blade portion 3a is formed on the outer peripheral edge portion of the lower blade 3. On the other hand, a plurality of annular upper blade holders 5 having the same thickness as the lower blades 3 and upper blade spacers 6 are alternately attached and fixed to the second rotating shaft 2 so as to be in close contact with each other. An annular upper blade support member 8 is fitted in the groove portion 7 formed on the outer peripheral edge portion of the above, and is fixed to the upper blade holder 5 by a bolt 9. An annular rib 10 is provided on the outer peripheral side of the upper blade support member 8 so as to project, and a step portion is formed on the outer peripheral surface of the rib 10. An annular upper blade 11 and a disc spring 12 are mounted on the outer periphery of the rib 10, and the disc spring 12 axially moves the upper blade 11 to the stepped portion with the end face of the upper blade holder 5 as a fulcrum. It is the one that is pressed against.

In this way, the upper blade 11 is mounted so as to be movable in the axial direction, and the outer peripheral portion of the upper blade 11 is in close contact with the outer peripheral portion of the lower blade 3, so that the outer peripheral portion of the upper blade 11 is When the blade portion 3a of the lower blade 3 is brought into contact with the lower blade 3, the upper blade 11 is urged so as to come into close contact with the lower blade 3. Further, as shown in FIG. 6, the upper blade holder 5 may be divided into two in the axial direction and symmetrically closely attached to each other and attached to the second rotary shaft 2.

Such a slitter is called a shear cut type, and as a proposal regarding this type of slitter, as described in Japanese Patent Publication No. 61-4636, the upper blade and the lower blade are formed with a thick blade and a thin blade, respectively. , A thin blade is distorted by a disc spring to abut against a thick blade, and as described in Japanese Utility Model Laid-Open No. 61-85313, as an urging means for abutting an upper blade against a lower blade. It is known that a plate-like elastic material is used.

Further, as in the slitter described in Japanese Utility Model Laid-Open No. 2-19493, a pair of upper blade supporting members that support the upper blade so as to be displaceable within a predetermined range in the axial direction of the rotary shaft, The upper blade is supported by the upper blade support member and has an outer peripheral portion facing the outer peripheral portion of the lower blade, and the upper blade is mounted between the upper blade and the upper blade holder. A device including a pair of biasing disc springs is also known.

[0006]

[Issues to be solved by the device]

 However, all the conventional slitters and the slitters described in the publications use a special spring or elastic material to bring the upper blade into contact with the lower blade, which not only complicates the structure but also makes it difficult to cut. There is a drawback that wavy distortion is likely to occur on the side where the sheet that is the object is pushed in by the upper blade, and when cutting a single sheet of sheet, the direction in which the left and right cutting stresses are applied by the springs is asymmetric, so There is a problem that bending and bending are likely to occur.

Further, as the number of sheets to be cut increases, the thickness dimension of the upper and lower blades and the spacer and the strength of each spring must be controlled more precisely, and It is difficult to keep all gaps at zero. As a result, when cutting a single sheet, there was a problem that a difference in cutting stress was generated on the left and right sides, causing wavy distortion in the cut portion, and that the cut sheet was often twisted or bent.

The present invention has been made in view of the above circumstances, and it is possible to generate distortion, twist, bend, etc. in a member to be cut made of a metal foil such as a copper foil by using an upper blade having a simple structure. It is an object of the present invention to provide a slitter capable of accurately cutting and improving the durability of a cutting tool.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides first and second rotating shafts arranged in parallel with each other, and a plurality of lower shafts fixed to the first and second rotating shafts at predetermined intervals. In a slitter equipped with a blade and an upper blade, a deep groove is formed on the circumferential surface of a thin disk-shaped upper blade, and the outer peripheral portion of the upper blade is attached to the outer peripheral portion of the lower blade by utilizing the elasticity of both sides of the deep groove. The thick bladed upper blade is formed by forming a pair of deep grooves on the circumferential surface of the upper blade, and the outer peripheral portion of the upper blade is formed by utilizing the elasticity of one side of the deep groove. It is characterized in that it is pressed against the outer peripheral portion, and further, a deep groove is formed on the circumferential surface of a pair of thin disks, and an upper blade is formed by interposing a spacer of a predetermined thickness between the pair of thin disks, The feature is that the outer peripheral portion of the upper blade is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove.

[0010]

[Action]

 Next, the operation of the present invention will be described. When a member to be cut made of metal foil is cut into a plurality of sheets, a deep groove is formed on the circumferential surface of a thin disk-shaped upper blade that is a cutting blade. Since the outer peripheral part of the upper blade is pressed against the outer peripheral part of the lower blade, which is the receiving blade, by utilizing the elasticity of both sides of the deep groove itself, the pressing force is determined by the elastic coefficient of the upper blade itself, so that the cutting stress on the left and right Since it occurs with equal strength in the symmetric direction, no distortion occurs at the cut end of the cut sheet, and no twist or bend occurs in the entire sheet. However, since the gap between the upper and lower blades can be kept at zero by the elastic force of both sides of the deep groove of the upper blade and the lateral pressure can be kept constant, the accuracy of the cutting dimension and the durability of the blade can be improved.

Further, a pair of deep grooves are formed on the circumferential surface of the thick disk-shaped upper blade, and the outer peripheral portion of the upper blade is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove. Therefore, since the pressing force against the pair of lower blades is determined by the elastic coefficient of the upper blade itself, the left and right cutting stresses are generated with equal strength in the symmetrical directions, so that the cut edge of the cut wide sheet is distorted. And the wide sheet is not twisted or bent. Further, a deep groove is formed on the circumferential surface of a pair of thin disks, and a spacer having a predetermined thickness is interposed between the pair of thin disks to form an upper blade. Since the outer edge of the lower blade is pressed against the outer periphery of the lower blade by using the elasticity of the section, distortion occurs in the cut edge of the sheet of the same width, and twisting or bending occurs in the entire sheet of the cut width. There is nothing to do.

[0012]

【Example】

 Next, an embodiment of the slitter according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of this embodiment, and FIG. 2 is a vertical sectional view of an upper blade. In the figure, a plurality of annular lower blades 3 and lower blade spacers 4 having the same outer diameter and a constant thickness are alternately attached and fixed to the first rotating shaft 1 in close contact with each other. A blade portion 3 a is formed on the outer peripheral edge portion of the blade 3. On the other hand, a plurality of annular upper blades 13 and upper blade spacers 6 having the same thickness as the lower blades 3 are alternately attached and fixed to the second rotating shaft 2 so as to be closely attached to each other. A deep groove 14 is formed on the circumferential surface of the upper blade 13, and the blade portion 13a formed on the outer peripheral edge of the upper blade 13 is inserted between the two lower blades 3, 3 which are narrower than the thickness of the upper blade 13. By utilizing the elasticity of both side portions 15 of the deep groove 14, the outer peripheral portions 3a of the two lower blades 3 are pressed against each other.

When the member to be cut made of the metal foil is cut into a plurality of sheets in the above embodiment, the deep groove 14 is formed on the circumferential surface of the thin disk-shaped upper blade 13 which is a cutting blade. The outer peripheral edge blade portion 13a of the upper blade 13 is inserted between the two lower blades 3, 3 which are slightly narrower than the thickness of the upper blade 13, and the elasticity of both side portions 15, 15 of the deep groove 14 is used to Since the pressing force is determined by the elastic coefficient of the upper blade 13 itself because the pressing force is applied to the outer peripheral edge blade portion 3a of the lower blade 3, the cutting stress on the left and right is generated with equal strength in the symmetrical directions. There will be no distortion in the cut edge of the sheet, and no twisting or bending of the entire sheet.

Further, in another embodiment shown in FIG. 3, a pair of deep grooves 17, 17 are formed on the circumferential surface of the thick blade-shaped upper blade 16, and the outer peripheral edge blade portion 16 a of the upper blade 16 is formed. Is inserted between the two lower blades 3, 3 which are slightly narrower than the thickness of the upper blade 16, and is pressed against the outer peripheral edge portion 3a of the lower blade 3a by utilizing the elasticity of the deep groove one side portion 18. Further, in another embodiment shown in FIG. 4, a deep groove 20 is formed on the circumferential surface of a pair of thin discs 19 serving as upper blades, and a deep groove 20 is formed between the pair of thin discs 19, 19. The upper blade 22 is configured with the spacer 21 interposed, and the outer peripheral edge blade portion 22a of the upper blade 22 thus configured is between the two lower blades 3 and 3 which are slightly narrower than the thickness of the upper blade 22 as described above. It is inserted and pressed against the outer peripheral edge blade portion 3a of the lower blade 3 by utilizing the elasticity of the one side portion 23 of the deep groove 20.

Therefore, all of them are inserted between the lower blades 3 and 3 which are slightly narrower than the thickness of the upper blades 16 and 22 to utilize the elasticity of the one side portions 18 and 23 of the deep grooves 17 and 20 to make the lower blade 3 Since the pressing force is determined by the elastic coefficient of the upper blades 16 and 21 themselves, the cutting stress on the left and right is generated with equal strength in the symmetrical directions, and therefore the cutting is performed. In addition, the cut of a sheet with a predetermined width will not be distorted, and the entire sheet will not be twisted or bent.

[0016]

[Effect of device]

 According to the present invention described above, a deep groove is formed on the circumferential surface of a thin disk-shaped upper blade, which is a cutting blade of a slitter in which an upper blade and a lower blade are mounted on a pair of rotary shafts, respectively, and Since the peripheral part is pressed against the outer peripheral part of the lower blade that is the receiving blade by utilizing the elasticity of both sides of the deep groove, the pressing force is determined by the elastic coefficient of the upper blade itself, so that the cutting stress on the left and right is symmetrical. Since they are generated with equal strength, it is possible to prevent the occurrence of distortion at the cut end of the cut sheet, and thus to prevent the entire cut sheet from being twisted or bent. Moreover, since the gap between the upper and lower blades can be kept at zero by the elastic force on both sides of the deep groove of the upper blade, and the lateral pressure can be kept constant, the accuracy of the cutting dimension and the durability of the blade can be improved. is there.

In addition, a pair of deep grooves are formed on the circumferential surface of the thick disk-shaped upper blade, and the outer peripheral portion of the upper blade is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove. Therefore, since the pressing force is determined by the elastic coefficient of the upper blade itself, the left and right cutting stresses are generated with equal strength in the symmetrical directions, so that it is possible to prevent distortion at the cut edge of the cut wide sheet, and therefore the sheet It is possible to prevent the occurrence of twists and bends on the whole. Further, a deep groove is formed on the circumferential surface of the pair of thin disks, and a spacer having a predetermined thickness is interposed between the pair of thin disks to form an upper blade. Since the elasticity of the part is used to press against the outer peripheral part of the lower blade, it is possible to prevent the occurrence of distortion at the cut edge of the similarly cut sheet of a predetermined width, and therefore the occurrence of twisting or bending in the entire cut sheet. Can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of the present embodiment.

FIG. 2 is a vertical cross-sectional view of the upper blade of this embodiment.

FIG. 3 is a vertical sectional view of an upper blade of another embodiment.

FIG. 4 is a vertical sectional view of an upper blade of another embodiment.

FIG. 5 is a vertical sectional view of a conventional example.

FIG. 6 is a vertical cross-sectional view of another conventional upper blade.

[Explanation of symbols]

 1 1st rotating shaft 2 2nd rotating shaft 3 Lower blade 3a Blade part 4 Lower blade spacer 6 Upper blade spacer 13 Upper blade 13a Outer peripheral edge blade part 14,17,20 Deep groove 15 Both sides 16 Upper blade 16a Outer peripheral edge blade part 18 One side 19 Disc 21 Spacer 22 Upper blade

Claims (3)

[Scope of utility model registration request] 1. A first rotating shaft and a second rotating shaft arranged in parallel with each other, and a plurality of lower blades and upper blades fixed to the first rotating shaft and the second rotating shaft at predetermined intervals, respectively. In the slitter, form a deep groove on the circumferential surface of the thin disk-shaped upper blade,
A slitter, wherein the outer peripheral portion of the upper blade is brought into pressure contact with the outer peripheral portion of the lower blade by utilizing elasticity of both sides of the deep groove. 2. A first rotating shaft and a second rotating shaft arranged in parallel with each other, and a plurality of lower blades and upper blades fixed to the first rotating shaft and the second rotating shaft at predetermined intervals, respectively. In the slitter, a pair of deep grooves are formed on the circumferential surface of the thick disk-shaped upper blade, and the outer peripheral portion of the upper blade is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove. A slitter characterized by. 3. A first rotating shaft and a second rotating shaft arranged in parallel with each other, and a plurality of lower blades and upper blades fixed to the first rotating shaft and the second rotating shaft at predetermined intervals. In the slitter, a deep groove is formed on the circumferential surface of a pair of thin disks,
An upper blade is formed by interposing a spacer having a predetermined thickness between the pair of thin disks, and the outer peripheral portion of the upper blade is pressed against the outer peripheral portion of the lower blade by utilizing the elasticity of one side of the deep groove. A slitter characterized by that.