JP7640217B2 - Replacement blades for shearing equipment - Google Patents

Description

The present invention relates to a replacement blade for use in a shearing device.

An invention has been proposed that provides a control device for an arc welding robot that can suppress uneven wear of the cutting blade, prevent arc start failures caused by poor cutting, and extend the life of the cutting blade (Patent Document 1).

As shown in FIG. 12, the invention includes a control device for an arc welding robot that moves the tip TCP of the welding wire protruding from an arc welding torch to a wire cutting position instructed by a wire cutting device and cuts it with a cutting blade 12 having a predetermined cutting range Cr, the control device comprising a cutting number measuring means for counting the number of cuts, and a cutting position calculation means for recalculating the wire cutting position Cp according to the number of cuts.

JP 2008-080389 A

The technology in Patent Document 1 requires high system construction costs. This is too high a cost to incur in order to extend the life of the cutting edge.

The object of the present invention is to provide a shearing device that can extend the life of the cutting blade at low cost.

To achieve the above objective, the shearing device of the present invention has a handle in which the inner ring of the through hole is a cutting blade, and the object to be cut is inserted into the through hole, and the clamping member facing the through hole is clamped by the handle, thereby enabling the shearing of the object to be cut.

Here, the clamping member is a second handle with an inner ring of a through hole that serves as a shearing blade, and the object to be cut can be inserted into the through hole of either the handle or the second handle, and the handle and the through hole of the second handle can be overlapped and clamped to shear the object.

To achieve the above object, the replacement blade used in the shearing device of the present invention has a handle in which the inner ring of the through hole is a shearing blade, and the object to be cut is inserted into the through hole, and a clamping member facing the through hole is clamped with the handle, thereby enabling the object to be sheared. The shearing blade can be removed from the through hole and replaced.

The present invention provides a shearing device that can extend the life of the cutting blade at low cost.

FIG. 2 is a perspective view of the nippers of the present embodiment in a closed state. FIG. 2 is a plan view of the nipper shown in FIG. 1 . This is a cross-sectional view taken along line AA in FIG. FIG. 2 is a front view of the nippers shown in FIG. 1 . FIG. 2 is a perspective view of the nippers according to the present embodiment in an open state. FIG. 6 is a plan view of the nipper shown in FIG. 5 . This is a cross-sectional view taken along line B-B of FIG. FIG. 6 is a front view of the nippers shown in FIG. 5 . FIG. 2 is an exploded perspective view of the nippers according to the present embodiment. This is an oblique view of a pair of scissors that is currently widely available, with the blades roughly surrounded by a hand-drawn circle. This is an oblique view of a pair of nippers that are currently widely available, with the blade roughly surrounded by a hand-drawn circle. FIG. 1 illustrates the prior art.

(Nipper configuration)
The configuration of nippers 1 according to this embodiment will be described below with reference to Figures 1, 2, 3, 4, 5, 6, 7, 8, and 9. As shown in the figures, nippers 1 have a handle 12 in which an inner ring 11 of a circular through hole 10 serves as a cutting blade.

The nippers 1 have a second handle 13 (clamping member) that has a configuration that is approximately the same as the handle 12. The workpiece (not shown) is inserted into the inner ring 11 or inner ring 11a of either the handle 12 or the second handle 13, and the through holes 10a of the handle 12 and the second handle 13 are overlapped, faced, and rubbed together, making it possible to shear the workpiece.

The handle 12 and the second handle 13 each have a screw hole 14, 14a in the center, and a screw 15 is inserted into the two screw holes 14, 14a. The handle 12 and the second handle 13 can rotate around the screw 15 as a rotation axis. In other words, this rotation is also used to change the nippers 1 from the open state shown in Figures 5, 6, 7, and 8 to the closed state shown in Figures 1, 2, 3, and 4.

The two shearing blades of the inner rings 11, 11a of the through holes 10, 10a clamp the wire or other object to be cut inserted into either the through hole 10 or the through hole 10a by the above-mentioned rotational action. This clamping cuts the wire or other object by pinching it between the two blades. In other words, this clamping and cutting operation is achieved by switching from the open state of the nippers 1 shown in Figures 5, 6, 7, and 8 to the closed state of the nippers 1 shown in Figures 1, 2, 3, and 4.

As shown in FIG. 9, the inner ring 11 of the through hole 10 can be removed as a cylindrical block from the handle 12. Also, the inner ring 11a of the through hole 10a can be removed as a cylindrical block from the second handle 13. The inner ring 11 of the through hole 10 can be fitted into the inner ring fixing hole 16. Also, the inner ring 11a of the through hole 10a can be fitted into the inner ring fixing hole 16a.

The inner ring 11 of the through hole 10 is fixed to the inner ring fixing hole 16 by inserting a screw 18 into the screw hole 17 and applying screw force. The inner ring 11a of the through hole 10a is fixed to the inner ring fixing hole 16a by inserting a screw 18a into the screw hole 17a and applying screw force.

The screw hole 17 penetrates through the separation portion 20 where the split end portion 19 of the handle 12 is separated from the split end portion 19a, and penetrates into the split end portion 19a (the broken line in FIG. 9). The screw hole 17a also penetrates through the separation portion 20a where the split end portion 19b of the second handle 13 is separated from the split end portion 19c, and penetrates into the split end portion 19c (the broken line in FIG. 9).

This screw force causes the split ends 19, 19a of the handle 12 to bend slightly toward the inner separation part 20. This screw force also causes the split ends 19b, 19c of the second handle 13 to bend slightly toward the inner separation part 20a. These bends firmly fix the inner rings 11, 11a of the through holes 10, 10a to the inner ring fixing holes 16, 16a.

(How to use Nipper 1)
First, the nippers 1 are opened. Then, an object to be cut, such as a wire, is inserted into either the through hole 10 or the through hole 10a. The nippers 1 are then closed. Then, the object to be cut, such as a wire, is clamped and sheared by the two shearing blades of the inner rings 11, 11a of the through holes 10, 10a. Here, the shearing portion of the nippers 1 is fixed.

This type of shearing is repeated, for example, 100 times, at the same location of the shearing blade. Then, when the shearing blade at that location becomes dull, the screw 18 is loosened to prevent the slight bending of the split ends 19, 19a of the handle 12 toward the inner separation portion 20. This screw force is also loosened to prevent the slight bending of the split ends 19b, 19c of the second handle 13 toward the inner separation portion 20a.

Then, the force with which the inner ring 11 (cylindrical block body) of the through hole 10 fits into the inner ring fixing hole 16 is weakened. Also, the force with which the inner ring 11a (cylindrical block body) of the through hole 10a fits into the inner ring fixing hole 16a is weakened. Therefore, the inner ring 11 (cylindrical block body) of the through hole 10 is rotated so as to slightly change the angle at which it fits into the inner ring fixing hole 16. Also, the inner ring 11a (cylindrical block body) of the through hole 10a is rotated so as to slightly change the angle at which it fits into the inner ring fixing hole 16a.

Then, the inner ring 11 (cylindrical block body) of the through hole 10 is again fitted into the inner ring fixing hole 16, and the inner ring 11a (cylindrical block body) of the through hole 10a is fitted into the inner ring fixing hole 16a, and firmly fixed.

Then, shearing can be resumed at a point where the shear blade is not dull. This shearing is repeated again, for example, 100 times. The same operation is then repeated to enable shearing at a point where the shear blade is not dull. When this repetition is exhausted and there are no more points where the shear blade is not dull, the inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a are entirely replaced.

(Major Effects Obtained by the Present Embodiment)
In this embodiment, the cutting blade (shearing blade) formed on the inner ring 11 of the through hole 10 utilizes the entire area of the inner ring, thereby making it possible to extend the life of the cutting blade (shearing blade). Such a shearing device can be constructed at low cost. In other words, in this embodiment, it is possible to provide a shearing device that can extend the life of the cutting blade at low cost.

In addition, the inner ring 11 (cylindrical block body, replacement blade) of the through hole 10 and the inner ring 11a (cylindrical block body, replacement blade) of the through hole 10a can be replaced, so even if the entire shearing blade becomes dull, it can be replaced with a new blade.

In addition, by first utilizing the entire area of the inner ring 11 of the through hole 10 of the handle 12, and then utilizing the entire area of the inner ring 11a of the through hole 10a of the second handle 13, it is possible to further extend the replacement interval of the inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a.

(Other forms)
The nippers 1 according to the present embodiment described above are one example of a preferred form of the present invention, but the present invention is not limited to this and various modifications can be made without departing from the spirit and scope of the present invention.

For example, the nippers 1 of this embodiment have a second handle 13 that is substantially identical in configuration to the handle 12. However, the clamping member that corresponds to one of the handles may be any member, such as a simple plate material. It is also possible to insert an object to be cut, such as a wire, into the through hole 10 of the handle 12 and shear the object with the handle 12 and the plate material that is the clamping member. In addition, by utilizing the entire area of the inner ring 11 of the through hole 10, it is also possible to extend the life of the cutting blade (shearing blade).

Furthermore, the handle 12 and the second handle 13 are sheared using the screw 15 as a rotation axis. However, such a configuration is not essential and can be omitted.

The object to be cut is not limited to wire, and can be any shaped object such as a plate or spring. However, since the object is to be inserted into the through holes 10, 10a, it is preferable that the object be a long object in order to facilitate easy insertion.

The inner ring 11 of the through hole 10 can be removed from the handle 12 as a cylindrical block body. The inner ring 11a of the through hole 10a can be removed from the second handle 13 as a cylindrical block body. However, the inner ring 11 of the through hole 10 and the inner ring 11a of the through hole 10a do not have to be removable from the handle 12 and the second handle 13 as cylindrical block bodies.

Furthermore, the inner ring 11 of the through hole 10 and the inner ring 11a of the through hole 10a may be block bodies of other shapes instead of cylindrical block bodies.

The screw hole 17 also passes through a separation portion 20 where the split end portion 19 of the handle 12 is separated from the split end portion 19a, and penetrates into the split end portion 19a (the broken line portion in FIG. 9). The screw hole 17a also passes through a separation portion 20a where the split end portion 19b of the second handle 13 is separated from the split end portion 19c, and penetrates into the split end portion 19c (the broken line portion in FIG. 9). However, such a configuration is not essential.

The screw force also causes the split ends 19, 19a of the handle 12 to bend slightly toward the inner separation portion 20. The screw force also causes the split ends 19b, 19c of the second handle 13 to bend slightly toward the inner separation portion 20a. However, these bends are not necessarily required.

The through holes 10, 10a are circular. However, the through holes 10, 10a are not limited to being circular. The through holes 10, 10a can be polygonal such as a square, a rounded polygon, an ellipse, or the like. In addition, by making the blade part of a pair of scissors currently in widespread circulation as shown in FIG. 10 (roughly the area enclosed by a hand-drawn circle) into a replaceable blade, a cost reduction effect can be obtained. In addition, by making the blade part of a pair of nippers currently in widespread circulation as shown in FIG. 11 (roughly the area enclosed by a hand-drawn circle) into a replaceable blade, a cost reduction effect can be obtained.

The shearing point of the nippers 1 is fixed. However, instead of fixing the shearing point, the shearing point may be moved and repositioned to a point where the shearing blade is not dull.

In addition, the workpiece is sheared 100 times at the same location of the shearing blade, and then the inner ring 11a (cylindrical block body) of the through hole 10a is rotated to slightly change the angle at which it fits into the inner ring fixing hole 16a. This allows shearing to be resumed at a location where the shearing blade is not dull. However, the number of times shearing is repeated at the same location may be changed as appropriate to 1 time, 50 times, 200 times, etc.

The inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a of the nippers 1 are replaced as a whole. However, the inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a may be discarded together with the handle 12 and/or the second handle without being replaced as a whole.

The inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a of the nippers 1 are replaced as a whole. However, the scope of replacement is not limited to the inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a as a whole. For example, the inner ring 11 (cylindrical block body) of the through hole 10 and the inner ring 11a (cylindrical block body) of the through hole 10a as a whole, and parts of the through holes 10 and 10a, etc. may be replaced.

In addition, in this embodiment, nippers 1 are given as an example of a shearing device. However, the shearing device is not limited to nippers 1, as there are other shearing devices such as scissors.

1 Nipper (shearing device)
10 Through hole 10a Through hole 11 Inner ring 11a Inner ring 12 Handle 13 Second handle (clamping member)

Claims (1)

The handle has an inner ring of a through hole that serves as a shear blade;
Inserting an object to be cut into the through hole;
By clamping a clamping member facing the through hole with the handle,
The shearing blade is used in a shearing device, and is capable of shearing the object to be cut,
The shear blade can be removed from the through hole and replaced.
Replacement blades for use in shearing devices.