JPH0618795Y2 - Thomson blade cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a manual cutting machine for a Thomson blade (industrial push-cutting blade).

<Prior Art> A Thomson blade is used by bending it into a shape according to the application, cutting it, and implanting it in a groove of a separately manufactured substrate.

In a conventional Thomson blade cutting machine, for example, as shown in FIG. 5, a base 22 for mounting a work piece is fixed to a lower portion of a main body 21, a lower blade 23 is attached to a right end of the base 22, and a lower blade 23 is provided above the main body 21. An upper blade base 24 that is slidably displaced in the vertical direction is provided, and a handle 25 is engaged with the upper blade base 24.
Was provided. When using this, stand 22
When the Thomson blade G is placed on the top and the cutting position is adjusted to the blade tip of the lower blade and the handle 25 is pressed downward, the upper blade 26 is displaced downward and the Thomson blade G can be cut.

<Problems to be Solved by the Invention> However, according to such a conventional device, it is not possible to cut a Thomson blade that has been bent in advance at a position close to the bent portion. The reason is that the vertical displacement mechanism of the upper blade and the engagement mechanism with the handle 25 are present in the upper rear part of the cutting edge line, so that the sectional structure orthogonal to the cutting edge direction is the sixth.
This is because it is complicated as shown in the figure and its cross-sectional area cannot be reduced.

The present invention makes this cross-sectional area as small as possible,
Allows cutting of the Thomson blade after bending.

<Means for Solving the Problem> The Thomson blade cutting machine of the present invention is a Thomson blade placed on the lower blade by being vertically displaced with respect to the lower blade to which the upper blade driven by the handle is fixed. In the device for cutting
A vertical guide groove is formed on a base having the lower blade attached to the upper surface, and an elevating member is provided which is slidably displaced along the guide groove and whose upper portion projects above the upper surface of the base. An opening through which the Thomson blade passes is formed in the portion of the lifting member that contacts the lower blade mounting position, and a beam is provided at the top of this opening, and the upper blade is above the cutting edge of the lower blade of the beam. And a notch is formed on a side surface of the beam portion where the upper blade is not attached, and an engaging mechanism for the handle and the elevating member is provided in the base.

<Action> The beam on the top of the lifting member to which the upper blade is attached
Since the notch is formed on the side surface to which the upper blade is not attached, the cross-sectional area above and behind the cutting edge line is very small. Therefore, as illustrated in FIG. 4, even if the Thomson blade has already been bent, the existence of the upper back part of the cutting edge line hardly causes any obstruction and cuts close to the bent portion. be able to.

<Embodiment> FIG. 1 is a partial cutaway view of a perspective view of an embodiment of the present invention seen from the rear.

One end of the Thomson blade mounting table 2 is connected to the upper surface of the base 1, and the other end of the mounting table 2 is supported by the support column 3. The lower blade 4 is fixed to one end (right end) of the mounting table 2, and the cutting edge defines the cutting position. A vertical guide groove is formed rightward from the cutting position of the base 1, and the elevating member 6 is slidably fitted in the guide groove. The lower half of the elevating member 6 is recessed into the base 1 and the upper part thereof projects above the upper surface of the base 1. The shape of the upper protruding portion has columns 6A and 6B at both front and rear ends, a notch 7 is formed in the right half between both columns, and a Thomson blade is provided at a portion extending the mounting table 2 to the right. An opening is formed therethrough, and as a result, a beam portion 8 for supporting both ends is integrally formed with both columns 6A and 6B on the opening. The upper blade 5 is attached to the lower portion of the left side surface of the beam portion 8. Therefore, the cross-sectional area of the beam portion 8 which contacts the upper right portion of the upper blade 5 is very small as shown in FIG. A horizontal handle shaft 9 is supported on the front part of the base 1, a left end of the shaft 9 projects to the left side surface of the base 1 and a handle 10 is provided, and an eccentric shaft 11 is provided at the other end of the base.
Is integrally formed, and this engages with a bearing 12 which is fitted and supported in the lateral hole of the elevating member 6 so as to be displaceable in the front-rear direction. The elevating member 6 is always pressed upward by the compression spring 13 interposed between the bases 1. Therefore, when the handle 10 is pushed down, the elevating member 6 descends to cut the Thomson blade, and when the handle 10 is released, the elevating member 6 returns due to the restoring force of the compression spring 13.

FIG. 3 shows the essential parts of another embodiment of the present invention. This embodiment is different from the above-mentioned embodiments in that a beam portion 18 cantilevered only by a column 16A at the front end of the elevating member 16 horizontally projects rearward, and a beam portion 18 is located below the left side surface of the beam portion 18. That is, the upper blade 5 is attached. According to this embodiment, the loop-shaped bent Thomson blade can be cut.

The present invention can be implemented by rounding the cross-sectional shape of the beam portion into a circular shape, an elliptical shape, or the like.

<Effect of the Invention> According to the present invention, since there is only a “beam part” in the upper back part of the upper blade, and the beam part can have a small cross-sectional area as long as the strength allows, it is not possible to use the conventional method. It has become possible to cut the already bent Thomson blade close to the bent portion.

[Brief description of drawings]

 FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view of an essential part of FIG. 1, FIG. 3 is a perspective view of an essential part of another embodiment of the present invention, and FIG. FIG. 5 is a perspective view showing a conventional example, and FIG. 6 is a sectional view of an essential part of FIG. 1 ... Base 2 ... Mounting stand 3 ... Support post 4 ... Lower blade 5 ... Upper blade 6,16 ... Lifting member 7 ... Notch portion 8, 18 ... Beam portion 9 ... Handle shaft 10 ... … Handle 11 …… Eccentric shaft 12 …… Bearing

Claims (1)

[Scope of utility model registration request] 1. A device for cutting a Thomson blade placed on a lower blade by vertically displacing the upper blade driven by a handle with respect to the fixed lower blade, wherein the lower blade is attached to the upper surface. A vertical guide groove is formed on the base, and an elevating member that slides and displaces along the guide groove and the upper part projects above the upper surface of the base is provided. While forming an opening through which the Thomson blade passes in the part that hits, a beam portion is provided on the top of the opening, and the upper blade is attached above the cutting edge of the lower blade of the beam portion, and the beam portion is A cutting machine for a Thomson blade, characterized in that a notch is formed on a side surface to which an upper blade is not attached, and an engaging mechanism of the handle and the elevating member is provided in the base.