JPH0233934Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an apparatus for performing flange bending on a workpiece such as a thin steel plate.

[Prior art and problems to be solved] Conventionally, when processing a flange on a workpiece such as a thin steel plate, several types of tools such as a hammer and a stopper are required. In addition, unless the operator has considerable experience and skill, the required precision cannot be achieved, and the working time becomes longer. Note that hitting the workpiece with a hammer or the like may cause cracks, which will reduce the yield of the product.

However, if a press or other mechanical equipment is used, accuracy and yield will be improved. However, on the other hand, this brings about new problems such as increased product costs.

The purpose of this invention is to provide a flange bending device that can perform simple and highly accurate processing without using large-scale mechanical equipment such as a press.

[Means for Solving the Problems] In order to solve the above problems, the flange bending device of the present invention is configured as follows.

That is, a concave mold having a concave part for bending a predetermined flange on the workpiece, a presser mold that clamps and fixes the workpiece positioned above the concave part together with the concave mold, and a shape that can be fitted into the concave part of the concave mold, A convex mold that can bend the flange by fitting into the convex mold, a tightening bolt that can penetrate the convex mold and be tightened to the concave mold, and by tightening the convex mold, the convex mold is fitted into the recess of the concave mold; and a tightening tool that applies rotational force to the tightening bolt.

[Operation] According to the above configuration, first, the workpiece is positioned and placed on the concave die, and the workpiece is clamped and fixed together with the concave die by the presser die. Thereafter, when the tightening bolt is tightened using a tightening tool, the convex part fits into the concave part of the concave part, and a desired flange is bent on the workpiece. Further, when the tightening tool is rotated in the opposite direction, the convex mold comes out of the recess of the concave mold.

[Example] An example of the present invention will be described below with reference to the drawings.

First, in FIG. 1, the concave mold 7 consists of a bottom plate 71 and a U-shaped template 72.
2, a recess 73 is formed. The lower arms 61 of the two presser arms 6 are welded to the lower surface of the bottom plate 71 in parallel to the parallel pieces 72a, 72a of the template 72. The presser arm 6 is formed into a U-shape by a lower arm 61, an upright piece 62, and an upper arm 63, and the upper arm 63 is formed by a parallel piece 72 of a template 72.
It is located above and parallel to a and 72a. template 7
A positioning reference pin 9 is provided at the base of the two parallel pieces 72a, 72a. Hole 7 is provided in the bottom plate 71.
1a is provided, and a nut 8 is provided concentrically with this hole 71a.
is welded to the back surface of the bottom plate 71 (the fourth
reference). Note that a butterfly bolt 11 is attached to the upper arm 63 of the presser arm 6.

The presser die 5 has the same shape as the template 72,
A reference hole 15 is located at a position corresponding to the positioning reference pin 9.
have.

As is clear from FIGS. 2 and 3, the convex mold 3 is a rectangular plate having a shape that can be fitted into the recess 73 of the concave mold 7.
It has a tightening bolt 2 that can be screwed into.
The tightening bolt 2 is loosely inserted into the hole 3a of the convex mold 3, and the stopper 1 is inserted between the head 2a and the convex mold 3.
6 is fixed to the tightening bolt 2 (see Fig. 3). A release arm 4 is loosely inserted into the tightening bolt 2 between the stopper 16 and the head 2a. When the tightening bolt 2 is rotated in the opposite direction, the release arm 4 is connected to release hooks 13, 13 provided on the convex shape 3.
is locked. Note that the tightening bolt 2 is driven by a tightening tool 1 such as an impact wrench.

As shown in FIGS. 4 to 6, the workpiece 10 is a thin steel plate, and a reference hole 14 into which the positioning reference pin 9 is inserted is previously formed.

In order to form the flange 12 shown in FIGS. 5 and 6 on the work 10 in the above configuration, the positioning reference pin 9 of the template 72 of the concave mold 7 is
into the reference hole 14 of the work 10 and
position. Next, after placing the presser die 5 on the workpiece 10 and inserting the pin 9 into the reference hole 15, the bolt 11 of the presser arm 6 is tightened and the presser die 5 is placed on the workpiece 10.
By pressing , the workpiece 10 is fixed.

Next, align the tightening bolt 2 with the nut 8 and lightly tighten it manually as shown in FIG. Subsequently, when the tightening bolt 2 is strongly tightened using the tightening tool 1 as shown in FIG.
is inserted into the recess 73 of the recess 7, and at this time the work 10
A flange 12 is formed on.

Next, when the tightening tool 1 is rotated in the reverse direction, the tightening bolt 2 comes out of the nut 8, but at this time the release arm 4 engages with the release hook 13 of the convex shape 3. Since the release arm 4 is pushed up by the stopper 16 as the tightening bolt 2 rises, the convex shape 3
is pulled upward by the tightening bolt 2 via the release arm 4 and comes out of the recess 73 of the recess 7. After that, the concave mold 7 is removed from the work 10 and the work is completed.

[Effects of the invention] As described above, with the present invention, the flange can be bent using a tightening tool such as a general-purpose impact wrench, so the device is small and compact, making it easy to carry. . This is convenient because depending on the type and size of the work, the device can be moved to the work.

Furthermore, although the device of the present invention is small and has a simple configuration, it can handle bending of relatively complex shapes by replacing the concave and convex types.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing one embodiment of the present invention, Figure 2 is a perspective view of a convex type, and Figure 3 is B of Figure 2.
4 is a sectional view showing the state before flange processing, FIG. 5 is a sectional view showing the state after flange processing, and FIG. 6 is a perspective view of the workpiece. 1...Tightening tool, 2...Tightening bolt, 3...
...convex type, 5...presser type, 7...concave type, 10...workpiece, 73...concave portion.

Claims (1)

[Claims for Utility Model Registration] A concave die having a concave portion for bending a predetermined flange on a workpiece, a presser die that clamps and fixes a workpiece positioned above the concave portion together with the concave die, and a concave portion of the concave die. a convex shape that can be fitted into the flange, and the flange can be bent by the insertion;
A flange bending device comprising a tightening bolt that fits a convex part into a concave recess by tightening the bolt, and a tightening tool that applies rotational force to the tightening bolt.