JPH0715756Y2 - Cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for cutting and cutting plastic films, woven fabrics, non-woven fabrics, taper rolls, sheet-like materials and the like.

(Problems to be Solved by Conventional Techniques and Inventions) A cutter for cutting a sheet or the like is sharp and long, and its cutting edge is always exposed. Therefore, when the machine is stopped, the cover is manually attached to the cutter for safety, but sometimes it is forgotten to cover it or the cover may be inadvertently touched because there is no cover during inspection, which is dangerous. It was

(Means for Solving the Problems) In the cutting device of the present invention, a cutter is attached to the tip of an arm whose rear end is pivotally supported by a base, and the lower end of a safety cover that covers the cutter from the side is an arm. The safety cover is urged by a spring in a direction to expose the cutter, and a rod is installed upright on the base so that the safety cover stands upright against the urging force of the spring. When the cutter operates for cutting, the safety cover separates from the rod as the arm moves, and the safety cover is laid down by the force of the spring, and when the cutter returns to the standby state, the back surface of the safety cover is the rod. It is pushed upright by the and upright, and the safety cover covers the cutter from the side.

In addition, a cutter is attached to the tip of an arm whose rear end is pivotally supported by the base, and the lower end of the safety cover that covers the cutter from the side is rotatably supported on the base. Is always urged by a spring in a direction to expose the cutter, and a holding plate is provided at the lower end of the safety cover.When the cutter is in the standby state, the tip of the arm pushes the holding plate to raise the safety cover upright. The safety cover is laid down by the force of the spring so that the cutter is exposed when the cutter is operated for cutting.

(Function) When the sheet-shaped material is not cut, the safety cover contacts the rod attached to the base and stands upright against the repulsive force of the spring, so the cutter is covered with the safety cover from the side. ing. When the cutter is activated for cutting, the safety cover is tilted by the spring and the cutter is exposed.

(Embodiment) The drawings show an embodiment of the cutting device of the present invention.

FIG. 1 is a side view of the cutting device 1, FIG. 2 is a perspective view showing a standby state of the cutting device, and FIG. 3 is a perspective view showing an operating state.

The cutting device 1 according to the present invention has a rear end 2 mounted on a base 3 and a shaft support 4
A cutter 6 is attached to a tip portion 5 of an arm 8 (reference numeral 4 is a rotating shaft), and a lower end portion of a safety cover 7 which covers the cutter 6 from a side surface is attached to the arm 8 by a hinge 10 so as to be rotatable. It is a thing. When the safety cover 7 stands upright with respect to the arm 8, the tip portion 7a of the safety cover 7 bent like an eaves covers the cutting edge of the cutter 6. In addition, the safety cover 7 is from the upright state to the cutter 6.
It is designed not to lean in the direction of.

The safety cover 7 is always provided with a cutter 9 by means of a spring 9.
Is urged in the direction of exposing (rear). One end of the spring 9 is connected to the arm 8 and the other end is connected to the upper portion of the safety cover 7.

Further, when the rod 11 is erected from the base 3 and the cutting device 1 is in a standby state (the arm 8 is tilted), the rod 11 makes the safety cover 7 stand upright. When the cutting device 1 is moved to the operating state (the arm 8 rises), the rod 11 and the safety cover 7 are separated from each other, and the safety cover 7 is laid down backward by the spring 9.

The top 11a of the rod 11 is formed in a substantially circular shape so that the back surface of the safety cover 7 can be pushed up smoothly.

The operation of the cutting device 1 thus configured will be described.

The rotation shaft 4 is rotated by the air cylinder 30, and the arm 8 is raised. When the safety cover 7 slides away from the rod 11, the safety cover 7 is pivoted down by the spring 9 about the hinge 10 and the cutter 6 is in the cutting posture (see FIG. 3).

When the cutting device 1 starts to return to the standby state, the top portion 11a of the rod 11 comes into contact with the back surface of the safety cover 7, and gradually overcomes the biasing force of the spring 9 to raise the lying safety cover 7. When the safety cover 7 is started up, the blade edge of the cutter 6 is covered with the eaves-shaped tip portion 7a. An adjusting bolt mechanism 12 may be provided on the back surface of the safety cover 7 in order to adjust the degree of contact with the rod 11.

Next, an embodiment in which the safety cover 7 is attached to the base 3 will be described with reference to FIG.

In this example, the lower end of the safety cover 7 is pivotally supported 17 on the base 3 via a mounting bracket 16.

Further, a pressing plate 71 for rotating the safety cover 7 is provided at the lower end of the safety cover 7. When the arm 8 returns to the standby state, the tip 81 of the arm 8 pushes the pressing plate 71 to rotate the safety cover 7 to cover the cutter 6 from the side surface. The safety cover 7 is constantly urged by a spring 9 connected to the base 3 in a direction away from the cutter 6.

Next, a schematic diagram in which the cutting device 1 is applied to a sheet-shaped material unwinder is shown in the work cycle of FIGS. 5 to 8.

FIG. 5 is a schematic view of a state where the sheet material 20 is unwound and a new sheet material 21 is waiting.

The remaining sheet material 20 is moved 180 degrees counterclockwise in a turret manner and a new sheet material 21 is moved.
At the same time as the sheet material moves, the press roller 25 moves upward in order to attach the original sheet material 20 and the new sheet material sheet 21 with little remaining (see FIG. 6).

Next, the new sheet material 21 attached is started to be fed, and at the same time, the arm 8 attaching the cutter 6
It is moved upward by an air cylinder or manually, and the raw material sheet 20 with a small remaining amount is cut (see FIG. 7).
At this time, the safety cover 7 is tilted and the cutter 6 is exposed.

After the cutting, when the arm 8 returns to the lower side again, the safety cover 7 is pivoted upright about the hinge 10 by the rod 11 to cover the cutter 6 from the side surface (see FIG. 8). Remove the core of the finished sheet material and set a new sheet material. By repeating this work, it is possible to continuously send the sheet-like material to the product production site.

(Effect of the device) Since the cutting device of the present invention is as described above, the safety cover is removed only when cutting the cutter, and the cutter is always covered with the safety cover when in the standby state.
There is no risk of injury during repairs.

[Brief description of drawings]

The drawings show an embodiment of the safety cover of the present invention. Fig. 1 is a side view of a cutting device, Fig. 2 is a perspective view of a standby state, Fig. 3 is a perspective view of an operating state, and Fig. 4 is another embodiment. FIG. 5, FIG. 5, FIG. 6, FIG. 7, and FIG. 8 are schematic views showing a cycle of unwinding work of the sheet-like material. DESCRIPTION OF SYMBOLS 1 ... Cutting device, 2 ... Arm rear end part 3 ... Base, 4 ... Axial support (rotating shaft) 5 ... Arm tip part, 6 ... Cutter 7 ... Safety cover, 8 ... Arm 9 ... Spring, 10 ... Hinge 11… Rod 20, 21… Sheet material roll 25… Press roller 30… Air cylinder 71… Press plate

Claims (2)

[Scope of utility model registration request] 1. A cutter is attached to the tip of an arm whose rear end is pivotally supported by a base, and a lower end of a safety cover for covering the cutter from the side is rotatably attached to the arm.
This safety cover is always urged by a spring in a direction to expose the cutter, and a rod is installed on the base to erect the safety cover against the urging force of the spring, and the cutter is operated for cutting. At this time, as the arm moves, the safety cover is separated from the rod, the safety cover is laid down by the force of the spring, and when the cutter returns to the standby state, the back surface of the safety cover is pushed by the rod to stand upright. A cutting device designed to cover the cutter from the side with a safety cover. 2. A cutter is attached to a front end of an arm whose rear end is pivotally supported by a base, and a lower end of a safety cover for covering the cutter from a side surface is rotatably supported on the base. This safety cover is always biased by a spring in a direction to expose the cutter, and a pressing plate is provided at the lower end of the safety cover.When the cutter is in the standby state, the tip of the arm pushes the pressing plate, The cutting device is designed to cover the cutter from the side by standing upright, and when the cutter operates for cutting, the safety cover is laid down by the force of the spring to expose the cutter.