JPH0593790U - Slitter - Google Patents

Abstract

(57) [Abstract] [Purpose] A long roll-shaped object such as a heat-meltable plastic sheet is rotated as it is, and it is pressed with a round blade with double edges and pressed with a tip saw. When cutting between cutting lines to make a ring cut, make sure that the cut surface does not have scratches due to cut marks or runout. [Structure] A double-edged round blade is provided with hoes near the outer edges of the left and right sides, and the edge of the round blade is used to cut off slightly inside the outer surface so that long objects can be pressed off and elastic. Even if there is a runout on the cut surface that is formed by returning, the edge does not hit.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slitter in which a roll-shaped long object is rotated and cut into slices by a cutting means, and in particular, a heat-meltable roll-shaped long object in which a film such as plastic or a non-woven fabric is tightly wound is sliced. About the slitter making tape.

[0002]

[Prior Art]

 Conventionally, as this type of slitter, there has been known one in which a roll-shaped long object is sliced by using a cutting means composed of a double-edged round blade having a pair of cutting edges separated in the thickness direction and a straight bite blade. (See, for example, the application documents of Japanese Utility Model Application No. 62-112379). In this conventional double-edged round blade, the left and right outer surfaces of the cutting edge are flat as shown in FIG.

[0003]

[Problems to be solved by the device]

 In such a conventional slitter, the side surfaces 44 and 45 of the blade edges 42 and 43 of the round blade 41 are constantly in contact with the roll-shaped film of the workpiece to be cut so that the blade edges 42 and 43 are notched. The feed mark is easily attached to the cut surface. In addition, if there is a slight run-out, an indeterminate cut is made and the cut surface is scratched, and a clean cut surface cannot be obtained.

The present invention has been devised in view of the above, and when making a score line with a double-edged round blade, it is difficult for a cut feed mark to be attached to the cut surface and the center runout of the round blade is great. The purpose is to provide a slitter that can obtain a clean cut surface without scratching the cut surface.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a slitter according to the present invention comprises a roll-shaped elongated member supported by a horizontal guide supporting rod inserted into a hollow core thereof to be rotationally driven, and the guide supporting rod. The long object is cut into a circular slice shape by a cutting device that moves toward and away from the guide support rod in a direction orthogonal to the direction of the guide support rod and moves in the longitudinal direction of the guide support rod at every set width via the shift device. The cutting means is a round blade with a double edge, which has a peripheral groove in the central portion of the outer peripheral surface and has parallel edges on both sides of the groove, and the center of the circular blade and the thickness direction. In the case of a tip saw that is driven to rotate in a combined state and has a thickness slightly smaller than the edge interval of the round blade, the double edged round blade is located near the edges on the left and right outer surfaces. The feature is that ho is installed.

[0006]

【Example】

 Hereinafter, representative embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a typical embodiment of a slitter of the present invention, FIG. 2 is an explanatory view taken along the line II-II in FIG. 1, and FIG. 3 is an enlarged main part of a double-edged round blade. It is a figure.

In FIG. 1 to FIG. 3, a roll-shaped film slitter 1 has a roll-shaped long object A made of a heat-welding film such as nylon film and inserted into a hollow paper cylinder a of its core. It is fixed by the mechanical chuck C with the guide support rod G, and is supported horizontally along the machine base 2 in the longitudinal direction via the support device 30. The guide support rod G is held in a cantilever state in the motor box B by the spindle housing 21, and is rotatably driven by a reversible geared motor in the motor box B via a transmission system. Therefore, the support rod G has a bearing 24 at its free end, through which the free end is held on the support device 30. The mechanical chuck C is provided with chuck leaves 25, ..., which are provided at intervals in the longitudinal direction of the support rod G and are capable of advancing and retracting in the radial direction by four at intervals of 90 ° in the circumferential direction. The support rod G and the mechanical rod are composed of a control rod 26 having a cam means for moving in G, and a jig cylinder (provided in the motor box B) for moving the control rod 26 forward and backward in the longitudinal direction. The chuck C is protected by being covered with a relatively thin rubber tube t.

The cutting means 11 for cutting the roll-shaped long object A into slices while rotating it comprises a tip saw 13 on the upper side of the guide support rod G and a round blade 12 with a double edge on the lower side, and a motor box B It is mounted via a small table 5 on a large table 4 which is sequentially shifted by the cutting width along the longitudinal direction of the machine base 2 by the rotation of a ball screw 3 of a shift means connected to a reversible motor therein. A tip saw 13 is pivotally supported by a motor M 3 so as to be rotated by a motor M 3 on an upper bracket 6 a that horizontally protrudes on the support rod G side of a stand 6 that is erected on the small table 5. A round blade 12 is pivotally supported on a lower bracket 6b horizontally protruding on the support rod G side so as to be rotated by a motor M4.

The brackets 6a and 6b are attached to the stand 6 such that the vertical distance between them is relatively adjusted. The driving means 10 for moving the small table 5 toward and away from the support bar G is a motor M5 installed on the large table 4 and a bearing block 15 connected to the motor M5 and the bearing block 15 on the large table 4 in plan view. A ball screw 16 rotatably arranged in a direction orthogonal to the support bar G, a guide rail 17 arranged in parallel with the ball screw 16, and a ball screw 16 inserted into the guide rail 17 and screwed into the ball screw 16 to be mounted on the small table 5. It is composed of a block 18 fixed to the lower surface. Therefore, the small table 5 equipped with the cutting means 11 is moved back and forth toward and away from the support rod G by the forward and reverse rotations of the motor M5, and the inching shift of the large table 4 and the reciprocating motion of the small table 5 cause the wheel to move. Cutting work is performed.

The round blade 12 has a U-shaped (or V-shaped) peripheral groove 121 at the center of the outer peripheral surface, and a pair of parallel edges 122 and 123 are spaced in the thickness direction. During operation, a lubricating / cooling agent such as water is supplied to the edge portion as appropriate. The round blade 12 can easily make a cut by hitting the edges 122 and 123 on the lower half side of the elongated state of the elongated object A which bends like a bow due to weight, and does not cause welding on the cut surface. Further, the round blade 12 is provided with hoes (shinoki) 122a and 123a around the edges on the left and right outer surfaces thereof, and the tip of the edge is separated from the hoes 122a and 123a by 0.1 mm, which is a slight distance. Even if there is runout, the cut surface A ₁ is not scratched or the cut feed mark is not attached. Since the rolled long object (film) A has elasticity, when it is pressed by the edges 122 and 123, it is drawn toward the center of the peripheral groove 121 of the round blade to make a notch, and the film is cut. The layer is restored by elasticity and spreads to become the cut surface A _1, and the edges 122 and 123 are not touched, and the influence of the runout is eliminated.

In the tip saw 13, the tips 131 and 132, which are slightly narrower than the interval between the edges 122 and 123 of the round blade 12, are fixed to the corrugated cut portion of the outer periphery of the saw body 130 so that the tips are staggered. It is configured such that the tip of the round blade 12 has a depth of about 2 mm in the long object A and the cutting position is shallow. Therefore, the thickness of the protective tube t of the mechanical chuck C 1 is set to 2.5 mm or more. The long blade A is set such that the circular blade 12 first pushes parallel lines and then the tip saw 13 cuts between them. The operating conditions of the support rod G, the round blade 12 and the saw 13 may be, for example, 150 rpm, 600 rpm and 3000 rpm, respectively. Cutting debris is optionally collected with suction air.

[0012]

[Effect of the device]

 As explained above, according to the slitter of the present invention, due to the hoes provided near the edges on the left and right side surfaces of the double-edged round blade, the cut marks are hard to be attached to the cut surface and some core Even if there is runout, the cut surface will not be damaged by the edge, and a clean cut surface can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a typical embodiment of a slitter of the present invention.

FIG. 2 is an explanatory diagram taken along a II-II arrow line in FIG.

FIG. 3 is an enlarged view of a main part of a round blade with a double edge.

FIG. 4 is an enlarged view of a main part of a round blade with a double edge of a conventional slitter.

[Explanation of symbols]

 1 Slitter 3 Shift Means 10 Driving Means 11 Cutting Means 12 Round Blades 121 Circumferential Grooves 122, 123 Edges 122a, 123a Hoes 13 Tipsaws 25 Leaf A Long Objects a Cores G Guide Support Rods

Claims (2)

[Scope of utility model registration request] 1. A roll-shaped long object is supported by a horizontal guide support rod inserted through a hollow core thereof to be rotationally driven, and is approached in a direction orthogonal to the guide support rod through a drive means. The cutting means that moves backward and moves in the longitudinal direction of the guide support rod at a set width by a shift means to cut the long object in a circular slice shape. A round blade with a double edge having a peripheral groove in its portion and surrounding parallel pressing edges on both sides of the groove, and the rotary blade being driven to rotate in a state where the center of the round blade and the thickness direction are aligned with each other. In a slitter composed of a tip saw with a thickness slightly smaller than the edge interval of the blade, the round blade with double edges is
A slitter that has hoes around the edges of the left and right outer surfaces. 2. The widthwise interval between the hoe and the edge tip is
The slitter according to claim 1, wherein the slitter is set to 0.05 to 0.15 mm.