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 shearing device.

Background Art

[0002] An invention has been proposed that provides a control device for an arc welding robot capable of suppressing uneven wear of a cutting blade, preventing arc start failures due to cutting defects, and achieving a long life of the cutting blade (Patent Document 1).

[0003] As shown in FIG. 12, the content of that invention is a control device for an arc welding robot that moves the TCP at the tip of a welding wire protruding from an arc welding torch to a taught wire cutting position of a wire cutting device and cuts it with a cutting blade 12 having a predetermined cutting range Cr, and includes a cutting count measuring means for counting the number of cuts and a cutting position calculating means for recalculating the wire cutting position Cp according to the number of cuts.

Prior Art Documents

Patent Documents

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technology of Patent Document 1, the cost of system construction is high. The cost for achieving a long life of the cutting edge is too large.

[0006] Therefore, an object of the present invention is to provide a shearing device capable of extending the life of a cutting blade at a low cost.

Means for Solving the Problems

[0007] 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 by inserting the object to be cut into the through hole and clamping the handle with a clamping member facing the through hole, the object to be cut is made possible. Furthermore, the shearing blade can be removed from the through-hole and replaced.

[0008] Here, the clamping member is a second handle in which the inner ring of the through-hole serves as a shearing blade. The object to be cut is inserted into the through-hole of either the handle or the second handle, and the through-holes of the handle and the second handle are overlapped to clamp the object, thereby enabling shearing of the object to be cut.

[0009] To achieve the above objective, the present invention provides a replacement blade for a shearing device, which has a handle in which the inner ring of the through hole is a shearing blade, and enables shearing of the object to be cut by inserting the object to be cut into the through hole and clamping the handle with a clamping member facing the through hole, wherein the shearing blade can be removed from the through hole and replaced. [Effects of the Invention]

[0010] The present invention provides a shearing device that can extend the lifespan of the cutting blade at a low cost. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view of the nippers of this embodiment in the closed state. [Figure 2] Figure 1 is a plan view of the nippers shown. [Figure 3] This is a cross-sectional view AA in Figure 2. [Figure 4] Figure 1 is a front view of the nippers shown. [Figure 5] This is a perspective view of the nippers in this embodiment in the open position. [Figure 6] Figure 5 is a plan view of the nippers shown. [Figure 7] It is a sectional view taken along line B-B of FIG. 6. [Figure 8] It is a front view of the nipper shown in FIG. 5. [Figure 9] It is an exploded perspective view of the nipper of the present embodiment. [Figure 10] It is a perspective view of the currently widely distributed clamp, and the blade part is roughly surrounded by a hand-drawn circle. [Figure 11] It is a perspective view of the currently widely distributed nipper, and the blade part is roughly surrounded by a hand-drawn circle. [Figure 12] It is a diagram showing the prior art.

Forms for Carrying out the Invention

[0012] (Configuration of the Nipper) Hereinafter, the configuration of the nipper 1 of the present embodiment will be described based on FIGS. 1, 2, 3, 4, 5, 6, 7, 8, and 9. As shown in the figure, the nipper 1 has a handle 12 in which the inner ring 11 of the circular through-hole 10 serves as a cutting edge.

[0013] Here, the nipper 1 has a second handle 13 (clamping member) having substantially the same configuration as the handle 12. Then, an object to be cut (not shown) is inserted into either 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 and opposed to each other, and by rubbing against each other, the object to be cut can be sheared.

[0014] The handle 12 and the second handle 13 each have screw holes 14, 14a at their central portions, and a screw 15 is inserted into the two screw holes 14, 14a. With the screw 15 as a rotation axis, the handle 12 and the second handle 13 can rotate. That is, changing the nipper 1 from the open state shown in FIGS. 5, 6, 7, 8 to the closed state shown in FIGS. 1, 2, 3, 4 is also realized by this rotation.

[0015] The two shearing blades of the inner rings 11, 11a of the through holes 10, 10a sandwich the object to be cut, such as a wire, inserted into either the through hole 10 or the through hole 10a by the above-described rotational operation. By this sandwiching, the object to be cut, such as a wire, is cut by sandwiching it between the two blades. That is, the sandwiching and cutting operations are realized by changing the nipper 1 from the open state shown in FIGS. 5, 6, 7, and 8 to the closed state shown in FIGS. 1, 2, 3, and 4.

[0016] As shown in FIG. 9, the inner ring 11 of the through hole 10 can be removed from the handle 12 as a cylindrical block body. Also, the inner ring 11a of the through hole 10a can be removed from the second handle 13 as a cylindrical block body. 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.

[0017] 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 a 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 a screw force.

[0018] The screw hole 17 penetrates through the separation portion 20 where the tip cracking portions 19 and 19a of the handle 12 are separated, and penetrates to the tip cracking portion 19a (the broken line portion in FIG. 9). Also, the screw hole 17a penetrates through the separation portion 20a where the tip cracking portions 19b and 19c of the second handle 13 are separated, and penetrates to the tip cracking portion 19c (the broken line portion in FIG. 9).

[0019] By this screw force, the tip cracking portions 19, 19a of the handle 12 are slightly bent toward the inner separation portion 20. Also, by this screw force, the tip cracking portions 19b, 19c of the second handle 13 are slightly bent toward the inner separation portion 20a. Due to these bends, the inner rings 11, 11a of the through holes 10, 10a are firmly fixed to the inner ring fixing holes 16, 16a.

[0020] (Usage method of the nipper 1) First, open the nippers 1. Then, insert the material to be cut, such as a wire, into either the through hole 10 or the through hole 10a. Next, close the nippers 1. The material to be cut, such as a wire, will then be gripped and sheared by the two shearing blades of the inner rings 11 and 11a of the through holes 10 and 10a. At this point, the shearing point of the nippers 1 is fixed.

[0021] This shearing process is repeated, for example, 100 times at the same point on the shearing blade. When the shearing blade at that point becomes dull, the screwing force of the screw 18 is reduced so that the split ends 19, 19a of the handle 12, which had been slightly bending toward the inner separation portion 20, no longer bend. Also, by reducing this screwing force, the split ends 19b, 19c of the second handle 13, which had been slightly bending toward the inner separation portion 20a, no longer bend.

[0022] As a result, the force with which the inner ring 11 (cylindrical block) of the through hole 10 fits into the inner ring fixing hole 16 weakens. Also, the force with which the inner ring 11a (cylindrical block) of the through hole 10a fits into the inner ring fixing hole 16a weakens. Therefore, the inner ring 11 (cylindrical block) 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) 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] Subsequently, the inner ring 11 (cylindrical block) of the through hole 10 is fitted again into the inner ring fixing hole 16, and the inner ring 11a (cylindrical block) of the through hole 10a is fitted into the inner ring fixing hole 16a, and they are securely fixed in place.

[0024] Then, shearing can be resumed at a point where the shearing blade is not dull. This shearing is repeated, for example, 100 times. Then the same operation is repeated, making it possible to shear at a point where the shearing blade is not dull. When this repetition is exhausted and there are no more points where the shearing blade is not dull, the entire inner ring 11 (cylindrical block) of the through hole 10 and the inner ring 11a (cylindrical block) of the through hole 10a are replaced.

[0025] (Main effects obtained by this embodiment) In this embodiment, the lifespan of the cutting blade (shearing blade) is extended by utilizing the entire area of ​​the inner ring 11 formed on the inner ring 11 of the through hole 10. Such a shearing device can be constructed at low cost. In other words, this embodiment provides a shearing device that can extend the lifespan of the cutting blade at low cost.

[0026] Furthermore, since the inner ring 11 of the through hole 10 (a cylindrical block body, a replaceable blade) and the inner ring 11a of the through hole 10a (a cylindrical block body, a replaceable blade) can be replaced, even if the entire surface of the shearing blade becomes dull, it can be replaced with a new blade.

[0027] Furthermore, 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 for 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 above-described embodiment are an example of a preferred form of the present invention, but are not limited thereto, and various modifications can be made without changing the gist of the present invention.

[0029] For example, the nippers 1 of this embodiment have a second handle 13 which has substantially the same configuration as the handle 12. However, the clamping member, which corresponds to one of the handles, can be any material, such as a simple plate. It is also possible to insert the 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 that is the clamping member. Furthermore, 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).

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

[0031] Furthermore, the object to be cut is not limited to wire; any object with a shape, such as sheet metal or springs, can be used. However, since it will be inserted into the through holes 10 and 10a, it is preferable that the object to be cut be a long object for ease of insertion.

[0032] Furthermore, the inner ring 11 of the through hole 10 can be removed from the handle 12 as a cylindrical block. Similarly, the inner ring 11a of the through hole 10a can be removed from the second handle 13 as a cylindrical block. However, it is not necessary for the inner ring 11 of the through hole 10 and the inner ring 11a of the through hole 10a to be removable from the handle 12 and the second handle 13 as cylindrical blocks.

[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 shapes other than cylindrical block bodies.

[0034] Furthermore, the screw hole 17 passes through the separation portion 20, which separates the split portion 19a of the handle 12 from the split portion 19 (dashed line in Figure 9), and goes through to the split portion 19a. Also, the screw hole 17a passes through the separation portion 20a, which separates the split portion 19b of the second handle 13 from the split portion 19c (dashed line in Figure 9). However, such a configuration is not essential.

[0035] Furthermore, the screw force causes the split ends 19 and 19a of the handle 12 to bend slightly toward the inner separation portion 20. Also, this screw force causes the split ends 19b and 19c of the second handle 13 to bend slightly toward the inner separation portion 20a. However, these bends are not necessarily required.

[0036] Furthermore, the through holes 10 and 10a are circular. However, the through holes 10 and 10a are not limited to being circular. The through holes 10 and 10a can be polygons such as squares, rounded polygons, ellipses, etc. Also, cost reduction can be achieved by making the blade portion of currently widely available scissors (roughly the area enclosed by the hand-drawn circle) replaceable, as shown in Figure 10. Furthermore, cost reduction can be achieved by making the blade portion of currently widely available nippers (roughly the area enclosed by the hand-drawn circle) replaceable, as shown in Figure 11.

[0037] Furthermore, the shearing part of nipper 1 is fixed. However, instead of fixing the shearing part, it is also possible to move the shearing part to a position where the shearing blade is not dull.

[0038] Furthermore, the shearing of the material to be cut is performed by repeating shearing 100 times at the same point on the shearing blade, and then rotating the inner ring 11a (cylindrical block) of the through hole 10a so as to slightly change the angle at which it fits into the inner ring fixing hole 16a. This allows shearing to be resumed at a point where the shearing blade has not dulled. However, the number of times shearing is repeated at the same point can be changed as appropriate, such as once, 50 times, or 200 times.

[0039] Furthermore, the entire inner ring 11 (cylindrical block) of the through hole 10 and the inner ring 11a (cylindrical block) of the through hole 10a of the nippers 1 are replaced. However, the entire inner ring 11 (cylindrical block) of the through hole 10 and the inner ring 11a (cylindrical block) of the through hole 10a may be discarded along with the handle 12 and / or the second handle without being replaced.

[0040] Furthermore, the entire inner ring 11 (cylindrical block) of the through hole 10 and the inner ring 11a (cylindrical block) of the through hole 10a of the nipper 1 are replaced. However, the scope of replacement is not limited to the entire inner ring 11 (cylindrical block) of the through hole 10 and the inner ring 11a (cylindrical block) of the through hole 10a. For example, the entire inner ring 11 (cylindrical block) of the through hole 10 and the inner ring 11a (cylindrical block) of the through hole 10a, as well as parts of the through holes 10 and 10a, may be replaced.

[0041] Furthermore, in this embodiment, nippers 1 were given as an example of a shearing device. However, since other shearing devices such as scissors can also be used, the shearing device is not limited to nippers 1. [Explanation of Symbols]

[0042] 1. Nippers (shearing device) 10 Through holes 10a through hole 11 Inner circle 11a Inner ring 12 handles 13. Second handle (clamping component)

Claims

1. It has a handle with a through-hole inner ring that serves as a shearing blade. Insert the object to be cut into the through hole, By clamping the clamping member opposite the through hole with the handle, This enables shearing of the object to be cut, The shearing blade can be removed from the through hole and replaced. Shearing device.

2. In the shearing device according to claim 1, The clamping member is The inner ring of the through-hole serves as a shearing blade, and this is the second handle. The object to be cut is inserted into the through hole of either the handle or the second handle. By overlapping the aforementioned handle and the through hole of the second handle and sandwiching them together, To enable shearing of the object to be cut, Shearing device.

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