JPH073916U - Sliding device for sheet metal - Google Patents

Abstract

(57) [Abstract] [Purpose] Of the slit narrow metal sheets,
To provide a slitting device for a thin metal plate which prevents undulating distortion of outer edge portions of a narrow thin metal plate located at both ends. In a slitting device for a thin metal plate, a thin metal plate is cut into a plurality of narrow metal plates by a pair of upper and lower blades axially spaced from a pair of rotating shafts arranged in parallel with each other. The tension applying means for applying tension in the width direction of the thin metal plate is provided outside the cutting portion of the outermost blade of the plurality of blades, and the tension applying means is further provided for the outermost blade. And the pressing member that makes a pair with the blade, and the pressing member is arranged on the outer side by approximately the thickness of the blade of the outermost blade, and the outer corner portion of the outermost blade is chamfered. The pressing device is a metal thin plate slitting device in which the contact portion with the ear forms a corner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slitting device for a thin metal plate, and more particularly, it prevents waviness from occurring at the outer edge portions of the narrow thin metal plates at both ends of the slit narrow thin metal plates and prevents the slit width. The present invention relates to a slitting device for a thin metal plate that prevents dimensional variations.

[0002]

[Prior art]

 Conventionally, as shown in FIGS. 5 (A) and 5 (B), a slitting device for a thin metal plate is such that one of the pair of upper and lower slit blades 8, 8'and 9 has a blade 8'from the position of the other blade 9 As shown in FIGS. 6 (A) and 6 (B), a device in which two sheets are arranged with the thickness of the slit blade 9 different in the three directions (Japanese Patent Laid-Open No. 2-92525), A method for orthostatically guiding narrow metal thin plates 18 and 18 'after slitting by 8 and 9 in the circumferential direction of the blades 8 and 9 using abutting plates 22 and 23 (JP-A-2-172617). Is disclosed.

[0003]

[Problems to be solved by the device]

 However, the former is uneconomical because it is slit even when the narrow metal thin plate 18 'is not needed, and the number of blades used is large. On the other hand, in the latter case, the narrow metal thin plates 18 and 18 'and the contact plates 22 and 23 are relatively slid so that the narrow metal thin plates 18 and 18' may be scratched or the uneven plate may be slit. There was a disadvantage that the effect of the plate was small and the device was complicated.

The object of the present invention is to prevent the corrugation distortion occurring in the outer edge portions of the narrow metal thin plates located at both ends of the plurality of slit narrow metal thin plates and prevent variations in the slit width dimension. It is an object of the present invention to provide a slitting device for a thin metal plate that prevents the slit.

[0005]

In order to solve the above-mentioned problems, the first invention of the present application is a pair of upper and lower metal thin plates provided on a pair of rotating shafts arranged in parallel with each other at axial intervals. In a metal thin plate slitting device that cuts into a plurality of narrow metal thin plates by means of the blades, the tension applying means for applying tension in the width direction of the metal thin plates is located at the outermost side of the plurality of blades. It is provided outside the cutting portion of the blade.

In the second invention of the present application, in the first invention of the present application, the tension applying means for applying tension in the plate width direction includes a blade located at the outermost side and a pressing member paired with the blade. The material is arranged on the outer side by about the blade thickness of the outermost blade.

According to a third aspect of the present invention, in the second aspect of the present invention, one of the outer corner portion of the blade located at the outermost side or the portion of the pressing member that comes into contact with the ear portion of the thin metal plate is chamfered. And the other forms a corner.

[0008]

[Action]

 According to the present invention, the tension applying means for applying tension in the width direction of the thin metal plate is provided outside the cutting portion of the outermost blade of the plurality of blades. Tension is applied to the outer edge portion at the time of slitting, strain is less likely to occur between the outer edge portion and the ear portion during the slitting, and strain is not generated even after the slitting. Further, the tension applying means for applying tension in the plate width direction is composed of a blade located at the outermost side and a pressing member paired with the blade, and the pressing member is provided outside by an amount substantially equal to the blade thickness of the blade located at the outermost side. Since it is arranged, the edge of the metal thin plate is sandwiched between the outer corner of the blade located on the outermost side and the inner corner of the holding member so that the edge of the ear bends and the edge of the blade bends. Since tension is applied between the cut portion and the sandwiching portion to cause slitting, strain does not occur and variation in the slit width dimension is prevented. Furthermore, of the outer corner of the blade located on the outermost side or the part of the pressing member that contacts the metal thin plate ears, one is chamfered and the other forms a corner. The ears of the part are sandwiched so that the corners of the pressing member are bitten into, and the ears do not break and tension is generated.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an enlarged cross-sectional view of an essential part of a metal thin plate slitting device according to the present invention, FIG. 2 is a schematic cross-sectional view of a metal thin plate slitting device according to the present invention, and FIG. 3 is a metal thin plate coated with a resin or a special metal. FIG. 4 is an enlarged cross-sectional view of a main part of another embodiment corresponding to FIG.

In FIG. 2, a pair of upper and lower blades 8, 9 or 8, 8 and a pressing member 14 are axially arranged on a pair of rotating shafts 2, 3 arranged in parallel with each other via spacers 10, 10 ′ and 11, respectively. Is provided. The pair of rotating shafts 2 and 3 arranged in parallel with each other have male screw portions 4 and 4 at one ends, and nuts 5 and 5 are screwed in. The nuts 5 and 5 are provided with a plurality of internal threads 6 and 6 on the respective concentric circles. The female bolts 6 and 6 are respectively screwed with presser bolts 7 and 7 with their heads facing the spacers 10 'and 10'. It is rare. Therefore, the parallel extension between the pair of blades 8, 9 or 8, 8 and the vertical extension between the blades 8, 9 and the rotary shafts 2, 3 are adjusted by adjusting the nuts 5, 5 and the presser bolts 7, 7. You can do it. With this structure, the metal thin plate 17 is sandwiched between the pair of blades 8 and 9 or between the blades 8 and 8 and slit to be processed into the narrow metal thin plate 18. In this embodiment, six narrow metal thin plates 18 are processed.

FIG. 1 is an enlarged cross-sectional view of an essential part near a pair of upper and lower blades 8 and 9 located on the outermost side in FIG. A pair of upper and lower blades 8 and 9 and a pressing member 14 are provided via a spacer 11 by an amount substantially equal to the blade thickness of the blade 9. The outer corner portion 15 of the blade 9 and the inner corner portion 15 'of the pressing member 14 form a holding portion 25 for holding the ear portion 19 at the time of slitting. The outer corner portion 15 of the blade 9 is slightly rounded, and the inner corner portion 15 'of the pressing member 14 paired with this portion is formed at a right angle. With this construction, the ear portion 19 is bent toward the blade 9 side as shown in the drawing at the time of slitting, is sandwiched between the blade 9 and the pressing member 14, and the outer corner portion 15 of the blade 9 is Since the chamfering is performed and the inner corner portion 15 'of the pressing member 14 is at a right angle, the ear portion 19 is bent while being bitten by the inner corner portion 15' of the pressing member 14 and does not break. Therefore, tension is generated between the cutting portion 12 and the sandwiching portion 25 as in the slit portion, and the outer edge portion 24 of the thin metal plate 17 is slit without distortion. In the present embodiment, the outer corner portion 15 of the blade 9 is chamfered, but it is not limited to this and may be chamfered, and may be polygonal or chamfered at 45 degrees, for example. Further, the inner corner portion 15 'of the pressing member 14 is not limited to a right angle, and may have a shape having a corner. Alternatively, the outer corner portion 15 of the blade 9 may be right angled, and the inner corner portion 15 ′ of the pressing member 14 may be chamfered.

FIG. 3 shows a thin metal plate 17 which can be slit in the present invention. It is a special steel plate obtained by coating a 1 mm cold rolled steel plate with a plurality of rows of resin or special metal 21. It is possible to slit a portion 20 to which a resin or special metal 21 is not applied to form a plurality of narrow metal thin plates 18. When the slit device of the present invention is applied to the edge portions 24 of the narrow metal thin plates 18 at both ends among the plurality of narrow metal thin plates 18, no wavy distortion occurs and, as a result, variation in cutting width does not occur.

In the present invention, the tension applying means for applying tension in the plate width direction is composed of the blade 9 positioned on the outermost side as shown in FIG. 1 and the pressing member 14 paired with the blade 9, and the pressing member 14 Was placed on the outer side by approximately the thickness of the outermost blade 9, but the invention is not limited to this, and it is provided on the outer side of the cutting portion 12 of the outermost blade 9. For example, as shown in FIG. 4, a holding member 26 having a portion 27 that bites outwardly in the ear portion when slitting near the outside of the blade 9 and the cutting portion 12 may be used.

[0014]

[Effect of device]

 According to the first invention of the present application, tension is applied to the edge portion of the thin metal plate during slitting, strain is less likely to occur between the edge portion and the ear portion during the slitting, and the outer side of the narrow metal thin plate is also kept after the slitting. No strain is generated in the edge portion, and it has the effect of preventing variations in the slit width dimension.

According to the second invention of the present application, in addition to the effect of the first invention of the present application, the ear part is a nipping part between the outer corner part of the blade located on the outermost side and the inner corner part of the pressing member. The end side of the is bent so as to be sandwiched, and the tension similar to that of the slit portion is surely applied between the cutting portion and the sandwiching portion, so that the slitting is performed.

According to the third invention of the present application, in addition to the effects of the first invention and the second invention of the present application, the ear portion is provided between the outer corner portion of the blade located on the outermost side and the inner corner portion of the pressing member, and the other edge portion is formed. Since the corners are sandwiched so as to bite into each other, and one corner is chamfered, there is an effect that tension is applied without breaking the ears.

[Brief description of drawings]

1 is an explanatory view of a slitting device for a thin metal plate according to the present invention, and is an enlarged sectional view of an essential part in FIG.

FIG. 2 is a schematic sectional view of a slitting device for a thin metal plate according to the present invention.

FIG. 3 is a perspective view of a thin metal plate coated with a resin or a special metal according to the present invention.

FIG. 4 is an enlarged sectional view of a main part of another embodiment corresponding to FIG. 1 according to the present invention.

FIG. 5 is a sectional view illustrating a conventional slit device.

FIG. 6 is a cross-sectional view illustrating another conventional slit device.

[Explanation of symbols]

 1 Slitting device 2, 3 Rotating shafts 8, 8 ', 9 Blades 12 Cutting part 13 Outer blades 14, 26 Holding member 15 Outer corner part 15' Inner corner part 16 Square 17 Metal thin plate 18, 18 'Narrow metal thin plate 19 Ear

Claims (3)

[Scope of utility model registration request] 1. A slit of a metal thin plate for cutting a thin metal plate into a plurality of narrow metal thin plates by a pair of upper and lower blades axially spaced from a pair of rotating shafts arranged in parallel with each other. A device for slitting a thin metal plate, characterized in that tension applying means for applying a tension in the width direction of the thin metal plate is provided outside the cutting portion of the outermost blade of the plurality of blades. 2. The tension applying means for applying tension in the plate width direction according to claim 1, comprising a blade located on the outermost side and a pressing member paired with the blade, and the pressing member is located on the outermost side. A slitting device for a thin metal plate, wherein the slitting device is arranged outside by approximately the thickness of the blade. 3. In claim 2, one of an outer corner portion of the blade located at the outermost side or a portion of the pressing member that comes into contact with an ear portion of the thin metal plate is chamfered,
A slitting device for a thin metal plate, characterized in that the other forms a corner.