Shearing device

Abstract

To provide a shearing device that enables life of a cutting blade to be prolonged with low costs.SOLUTION: A nipper 1 includes a handle 12 in which an inner wheel 11 of a through hole 10 is a shearing blade. An object to be cut is inserted to the through hole 10, and a pinching member facing a through hole 10a is pinched with the handle 12, so that the object to be cut can be sheared.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a shear device. [Background technology]

[0002] An invention has been proposed to provide a control device for an arc welding robot that can suppress uneven wear of the cutting blade, prevent arc start problems caused by poor cutting, and extend the life of the cutting blade (Patent Document 1).

[0003] The invention relates to a control device for an arc welding robot that moves a tip portion TCP of a welding wire protruding from an arc welding torch to a wire cutting position instructed by a wire cutting device and cuts the tip portion TCP with a cutting blade 12 having a predetermined cutting range Cr, as shown in FIG. 12. The control device includes a cut number measuring means that counts the number of cuts, and a cut position calculating means that recalculates the wire cutting position Cp according to the number of cuts. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2008-080389 A Summary of the Invention [Problem to be solved by the invention]

[0005] The technology of Patent Document 1 requires high system construction costs, which is too high for the cost of extending the life of the cutting edge.

[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a shearing device capable of extending the life of a cutting blade at low cost. [Means for solving the problem]

[0007] In order to achieve the above-mentioned objective, the shearing device of the present invention has a handle in which the inner ring of a through hole serves as a cutting 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 making it possible to shear the object to be cut.

[0008] Here, the clamping member is a second handle in which the inner ring of the through hole 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 to clamp the object, thereby making it possible to shear the object.

[0009] In order to achieve the above-mentioned object, the replacement blade used in the shearing device of the present invention has a handle in which the inner ring of a through hole is a shearing blade, and enables the object to be inserted into the through hole and the clamping member facing the through hole to be clamped with the handle, thereby shearing the object to be cut.The replacement blade used in the shearing device is a shearing blade that can be removed from the through hole and replaced. Effect of the Invention

[0010] The present invention can provide a shearing device capable of extending the life of the cutting blade at low cost. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a perspective view of the nippers of the present embodiment in a closed state. [Diagram 2] FIG. 2 is a plan view of the nippers shown in FIG. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 2 is a front view of the nippers shown in FIG. [Diagram 5] FIG. 2 is a perspective view of the nippers according to the present embodiment in an open state. [Figure 6] FIG. 6 is a plan view of the nippers shown in FIG. 5. [Figure 7] 7 is a cross-sectional view of FIG. 6 taken along line B-B. [Figure 8] FIG. 6 is a front view of the nippers shown in FIG. 5. [Figure 9] FIG. 2 is an exploded perspective view of the nippers according to the present embodiment. [Figure 10] This is an oblique view of a pair of scissors that is currently widely available, with the blade portion roughly surrounded by a hand-drawn circle. [Figure 11] 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. [Figure 12] FIG. 1 illustrates the prior art. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] (Nipper configuration) The configuration of nippers 1 of 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.

[0013] Here, the nippers 1 have a second handle 13 (clamping member) of approximately the same configuration as the handle 12. An object to be cut (not shown) is inserted into the inner ring 11 or the 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 against each other, thereby enabling the object to be sheared.

[0014] The handle 12 and the second handle 13 each have screw holes 14, 14a in their central portions, and screws 15 are inserted into the two screw holes 14, 14a. The handle 12 and the second handle 13 can be rotated about the screw 15 as a rotation axis. In other words, this rotation also enables the nippers 1 to be changed from the open state shown in Figures 5, 6, 7, and 8 to the closed state shown in Figures 1, 2, 3, and 4.

[0015] The two shearing blades of the inner rings 11, 11a of the through holes 10, 10a pinch the wire or other object inserted into either the through hole 10 or the through hole 10a by the above-mentioned rotating action. This pinching cuts the wire or other object by pinching it between the two blades. That is, this pinching and cutting operation is realized by switching 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.

[0016] 9, the inner ring 11 in the through hole 10 can be removed as a cylindrical block from the handle 12. Also, the inner ring 11a in the through hole 10a can be removed as a cylindrical block from the second handle 13. The inner ring 11 in the through hole 10 can be fitted into the inner ring fixing hole 16. Also, the inner ring 11a in the through hole 10a can be fitted into the inner ring fixing hole 16a.

[0017] The inner ring 11 in 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 a screw force. The inner ring 11a in 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 a screw force.

[0018] The screw hole 17 penetrates through a separation portion 20 where the forked portion 19 of the handle 12 is separated from the forked portion 19a, and then penetrates to the forked portion 19a (the portion indicated by the broken line in FIG. 9). The screw hole 17a penetrates through a separation portion 20a where the forked portion 19b of the second handle 13 is separated from the forked portion 19c, and then penetrates to the forked portion 19c (the portion indicated by the broken line in FIG. 9).

[0019] This screwing force causes the forked portions 19, 19a of the handle 12 to bend slightly toward the inner separated portion 20. This screwing force also causes the forked portions 19b, 19c of the second handle 13 to bend slightly toward the inner separated portion 20a. These bending motions firmly fix the inner rings 11, 11a in the through holes 10, 10a to the inner ring fixing holes 16, 16a.

[0020] (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.

[0021] 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 screwing force of the screw 18 is weakened to prevent the slight bending of the forked portions 19, 19a of the handle 12 toward the inner separated portion 20. The screwing force is also weakened to prevent the slight bending of the forked portions 19b, 19c of the second handle 13 toward the inner separated portion 20a.

[0022] 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.

[0023] Thereafter, 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 they are firmly fixed.

[0024] Then, shearing can be resumed at a location where the shear blade is not dull. This shearing is repeated again, for example, 100 times. Then, the same operation is repeated to enable shearing at a location where the shear blade is not dull. When this repetition is exhausted and there are no more locations 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.

[0025] (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.

[0026] 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 are replaceable, so even if the entire shearing blade becomes dull, it can be replaced with a new blade.

[0027] 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, 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 can be further extended.

[0028] (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 are possible without departing from the spirit and scope of the present invention.

[0029] For example, the nippers 1 of this embodiment have a second handle 13 of approximately the same configuration as the handle 12. However, the clamping member corresponding 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 between 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 (the blade for shearing).

[0030] Furthermore, the handle 12 and the second handle 13 are sheared with the screw 15 as a rotation axis. However, such a configuration is not essential and can be omitted.

[0031] The object to be cut is not limited to a wire, but may be any object having a shape, such as a plate material, a spring, etc. However, since the object to be cut is inserted into the through holes 10 and 10a, it is preferable that the object to be cut is a long object in consideration of ease of insertion.

[0032] Furthermore, inner ring 11 of through hole 10 can be removed as a cylindrical block body from handle 12. Furthermore, inner ring 11a of through hole 10a can be removed as a cylindrical block body from second handle 13. However, inner ring 11 of through hole 10 and inner ring 11a of through hole 10a do not have to be removable from handle 12 and second handle 13 as cylindrical block bodies.

[0033] 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 a shape other than a cylindrical block body.

[0034] The screw hole 17 passes through a separation portion 20 where the split portion 19 of the handle 12 is separated from the split portion 19a, and penetrates to the split portion 19a (the broken line portion in FIG. 9). The screw hole 17a passes through a separation portion 20a where the split portion 19b of the second handle 13 is separated from the split portion 19c, and penetrates to the split portion 19c (the broken line portion in FIG. 9). However, such a configuration is not essential.

[0035] The screw force also causes the forked portions 19, 19a of the handle 12 to bend slightly toward the inner spaced portion 20. The screw force also causes the forked portions 19b, 19c of the second handle 13 to bend slightly toward the inner spaced portion 20a. However, these bendings are not necessarily required.

[0036] Moreover, the through holes 10, 10a are circular. However, the through holes 10, 10a are not limited to being circular. The through holes 10, 10a may be polygonal such as a square, a rounded polygon, an ellipse, or the like. Moreover, by making the blade part of the currently widely distributed scissors shown in FIG. 10 (approximately the area surrounded by a hand-drawn circle) into a replaceable blade, a cost reduction effect can be obtained. Furthermore, by making the blade part of the currently widely distributed nippers shown in FIG. 11 (approximately the area surrounded by a hand-drawn circle) into a replaceable blade, a cost reduction effect can be obtained.

[0037] In addition, the shearing portion of the nippers 1 is fixed. However, instead of fixing the shearing portion, the shearing portion may be moved and the position may be changed to a portion where the shearing blade is not dull.

[0038] In addition, the shearing of the workpiece is performed by rotating the inner ring 11a (cylindrical block body) of the through hole 10a so as to slightly change the angle at which it fits into the inner ring fixing hole 16a after the shearing blade has been repeatedly sheared 100 times at the same location. This allows the shearing to be resumed at a location where the shearing blade is not dull. However, the number of times the shearing is repeated at the same location may be changed as appropriate to 1 time, 50 times, 200 times, etc.

[0039] Also, 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 not be replaced as a whole and may be discarded together with the handle 12 and / or the second handle.

[0040] In addition, 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 range 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 portions of the through holes 10, 10a, etc. may be replaced.

[0041] In the present embodiment, the nippers 1 are given as an example of a shearing device. However, the shearing device is not limited to the nippers 1 because there are other shearing devices such as scissors. [Explanation of symbols]

[0042] 1 Nipper (shearing device) 10 Through hole 10a through hole 11. Inner Circle 11a Inner Circle 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 object to be cut can be sheared. Shearing device.

2. 2. The shearing device according to claim 1, The clamping member is a second handle, the inner ring of the through hole being a shearing blade; The object to be cut is inserted into the through hole of either the handle or the second handle; The handle and the through hole of the second handle are overlapped and sandwiched, The object to be cut can be sheared. Shearing device.

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