JPH0715288U - Slitting machine - Google Patents

Abstract

(57) [Abstract] [Purpose] A slit processing machine that can perform optimum slit processing by changing the cutting position of the blade while maintaining the optimum angle of the slit processing without stopping the operation of the device. provide. [Structure] A plurality of blade holders 1 are provided on the side surface of the support rod 12.
1, a razor blade 1 is fixed to the blade holder 11, and both ends of the support rod 12 are fixed to a fixed base 2. In addition, the worm gear 4 is provided at both ends along the supporting rod 12.
1, a rotary shaft 4 which is rotated by a motor M is arranged in parallel. One end of a moving shaft 3 orthogonal to the rotary shaft 4 via a worm 31 is attached to the fixed base 2, and the other end is rotatably attached to the underframe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slitting machine for slitting a wide sheet when manufacturing an adhesive tape or the like.

[0002]

[Prior art]

 There are generally methods such as leather cutting, score cutting, and shear cutting for slitting a wide sheet into the product width when manufacturing adhesive tape, etc., depending on the characteristics of each method and the nature of the work piece. The cutting method is selected, but of these, leather cutting using a leather blade is inexpensive and widely used.

[0003]

[Problems to be solved by the device]

 However, in the leather cutting, when the work piece is made of a paper sheet or the like as a base material, the abrasion of the leather blade is remarkable, and the blade is spilled, resulting in a defective product. For this reason, it is necessary to change the position of the blade every time a slit of several hundred meters is made. Conventionally, in a slitting machine using a leather blade, as shown in FIG. 3, the leather blade 1 is tilted with respect to the traveling direction A of the sheet 7 on a blade holder 11 of a shaft 13 whose both ends are fixed to bearings. In order to change the cutting position of the leather blade 1, the shaft 13 is slightly rotated to change the angle of the blade 1.

The above method has a problem that the optimum angle of the blade in slit processing changes. Further, if the work of changing the angle is carried out during operation, the cutting line 8 will be displaced and a defective product will be produced, so it was indispensable to stop the operation.

The present invention solves the above-mentioned problems of the prior art, and allows the cutting position of the blade to be changed without stopping the operation of the device, while maintaining the optimum angle of the blade for slit processing, thereby performing optimum slit processing. It is an object of the present invention to provide a slit processing machine capable of performing the above.

[0006]

[Means for Solving the Problems]

 The slitting machine of the present invention is a slitting machine for slitting a wide sheet-like body such as a raw material of adhesive tape into a narrow width, and a blade holder is provided on the side surface of a supporting rod whose both ends are fixed to a fixing table. The blade holder is provided with a razor blade, and a moving device for reciprocating the fixed base in a direction along the blade edge of the laser blade is provided.

The optimum angle of the blade with respect to the running direction of the sheet is 20 to 30 °. In the slitting machine of the present invention, the support rod provided with the leather blade is reciprocally moved together with the fixed base in the direction along the blade edge of the laser blade, but this movement may be performed continuously or at a constant rate. It may be performed intermittently in small amounts at intervals of time or at constant slit processing lengths.

The moving device is not particularly limited, but various devices such as a worm and a worm gear, a bevel gear, a rack and a pinion, an air cylinder, and an oil cylinder can be selected and used.

[0009]

[Action]

 In the slitting machine of the present invention, since the supporting rod provided with the fixed base and the leather blade reciprocates in the direction along the blade edge of the leather blade, the leather blade also moves in the direction along the blade edge while maintaining a constant angle. The blade can be slit to change the position to a new part and always slit the sheet at a constant angle.

[0010]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the slitting machine of the present invention. A plurality of blade holders 11 are provided on the side surface of the supporting rod 12, the blades 11 hold the razor blades 1, and both ends of the supporting rod 12 are fixed to the fixed base 2. The rotary shaft 4 having worm gears 41, 41 at both ends along the support rod 12 is juxtaposed, and the moving screw shafts 3, 3 having the worms 31, 31 engaging with the worm gears 41, 41 are the rotary shafts 4. And one end of which is fixed to the fixed base 2. Male screws are provided on the moving screw shafts 3 and 3 and are screwed into the worms 31 and 31. When the worms 31 and 31 are rotated by the worm gears 41 and 41, the moving screw shafts 3 and 3 are moved in the axial direction, As a result, the fixed base 2 is moved in the direction along the cutting edge of the laser blade 1.

Reference numeral 5 denotes a pressing device for the fixed base 2, which is composed of a cylinder 51 whose base 52 is fixed to the underframe and a piston 53 whose tip is fixed to the fixed base 2. As a result, the piston 53 is constantly urged to push the fixed base 2. The pressing device 5 is used to prevent backlash in which the moving shaft 3 moved by the rotation of the worm gear 41 and the worm 31 is returned in the opposite direction.

FIG. 2 is a side view in which the underframe of the slit processing machine is omitted, and the blade edge of the leather blade 1 is inclined so that the angle θ is 30 ° with respect to the traveling direction A of the sheet material 7. . After slitting a sheet material 7 of a certain length in this state, the motor M is rotated by the length measurement signal, and the moving shaft 3 moves in the direction of arrow B via the worm gear 41 and the worm 31, that is, the blade edge of the leather blade 1. Moves slightly along the direction. Along with this, the support rod 12 also moves upward in the direction of arrow B, that is, in the direction of the cutting edge.

As a result, the portion of the leather blade 1 that has cut the sheet material 7 traveling in the direction of arrow A is slightly displaced, and slit processing is continued at the new portion of the leather blade 1. In this case, since the movement of the leather blade 1 moves in the direction of the cutting edge, the contact angle between the cutting edge and the sheet 7 does not change even if the position of the slitting cutting edge changes.

Further, after slitting a certain length, the position of the razor blade 1 is slightly reduced in the same manner as above to perform slitting. When it reaches the lower end of the leather blade 1, if the tip of the leather blade 1 is moved little by little in the opposite direction, that is, the lower left direction, it is possible to slit the new portion of the leather blade 1 in the same manner. 6 is an underframe.

[0015]

[Effect of device]

 According to the slitting machine of the present invention, the fixed table can be moved in the direction along the edge of the leather blade, so that the sheet material is always slit at a constant blade angle. In addition, the cutting position of the blade can be changed while maintaining the optimum blade angle for slit processing, and optimum slit processing can be performed. Therefore, slitting can be performed efficiently without stopping the operation of the apparatus and without causing defective products.

[0016]

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view of the slit processing machine shown in FIG.

FIG. 3 is a perspective view showing a slit state by a conventional slit processing machine.

[Explanation of Codes] 1: Leather blade 2: Fixed base 3: Moving screw shaft 4: Rotating shaft 5: Pressing device 11: Blade holder 12: Support rod 31: Worm 41: Worm gear 51: Cylinder 52: Base portion 53: Piston

Claims (1)

[Scope of utility model registration request] 1. A slitting machine for slitting a wide sheet-shaped body such as an adhesive tape raw material into a narrow width, in which a blade holder is provided on the side surface of a support rod having both ends fixed to a fixed base, and the blade holder is provided. A slitting machine, characterized in that a holder holds a leather blade, and a moving device that reciprocates a fixed base in a direction along the blade edge of the leather blade is provided.