JPS5934391A - Method of forming fitting material with bull nose - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method of forming a joinery material having rounded corners.

In recent years, compared to wooden fittings, it has been recognized that it has the following advantages: it does not warp, it does not stain easily, it is easy to clean even if it gets dirty, it can be mass-produced in a factory, and it can provide high-class products at low prices. Fittings made of aluminum and synthetic resin are beginning to become popular. These types of fittings mainly use extruded shapes such as frames and lattices, but in order to add luxury and decoration to the fittings, various auxiliary shapes such as frame materials are also used. It will be done.

On the other hand, even if the fittings are made of aluminum or synthetic resin,
As with conventional wooden fittings, for example, as shown in FIG. 1, there is a demand for an external design in which a portion (2) of a corner of a picture frame (1) is rounded.

A method of forming this corner round on an extruded shape; 1. In step 7, the shape including the side wall part to be finally removed was formed in advance, and the end part was cut into 45 pieces, and both ends were cut off to form a curved part for the corner round. Afterwards, I can think of a method of gradually removing the remaining side walls of the part where both ends have been cut off, but what about press molds? More side wall part? This has the disadvantage that the process of cutting little by little is extremely tedious and inefficient.

In order to proceed with this work efficiently, it is possible to consider a press mold that simultaneously forms the corner round and removes the side wall, but the equipment would be large and the price would be prohibitive, so it is especially difficult to do so here. Since it is difficult to install at a retail store which requires such processing work, the current state is that the above-mentioned frame cutting process is forced.

Therefore, the present invention aims to solve the above-mentioned problems of the conventional methods when forming a corner corner of a fitting made of extruded shape material, and it is easy to use without requiring large-scale equipment. The purpose is to provide a method for efficiently performing various tasks.

The method of the present invention will be explained below with reference to the drawings.

Figure 2 shows an extruded joinery material (3) forming a corner round, and a pair of opposing side walls (4) (5) are connected to a horizontal wall with tapping holes (a flat lit m (y) )
(9) (10 to the upper edge was removed and a piece θυ (19) was attached to the top of the ceiling wall (6) with a tapping hole.

This type of fitting material is cut to a predetermined length according to the structure of the fitting, and at an angle of 45 degrees at the edge as shown in FIG.

Next, the rounded corners are cut out, but this process is conventional. That is, both ends of the removed piece 0υaS are partially cut out so that the curved part i/i for the corner rounding is drawn at the end of the removed piece (Ill Ql).

After this cutting process, the remaining removed piece fl+1 (1
On the outer surface side of 9, the above-mentioned thin wall portion for removal (9) Q
A linear groove 09 as shown in FIG. 4 is formed at a position corresponding to l. The groove 01 is formed using an appropriately sharp tool such as a cutter, and is made continuous with the curved part P for the rounded corner. By forming this groove (11), the thickness of the break-off thin part (9) (10) becomes -R thinner, making it easy to remove by hand by an operator without using a press equipment.

Then, the thin part for removal (9) αQ and the outer groove 0[
As shown in Figure 6, remove the strip 0υ (
1 is removed. The removal work is carried out by using a tool such as pliers to hold the removed piece (at the 0υ0 end).

As a result, a fitting material is formed that has curved corner portions P9 at both ends and a straight line in the center.

Further, when forming the linear groove 03 on the outer surface side of the side wall portion (4) (s), this groove can be formed simultaneously with extrusion molding of the fitting material (3). In this case, the fittings material (3
), and as shown in Figure 5, when the cutting process for forming the corner round is performed, the groove (f3aJ) is left in the rounded part, but after forming the corner round, It is possible to omit the work of forming a groove for removing the groove.

By the way, the fitting material (3) after the corner rounding has been formed has removal marks over the entire length of its upper edge, which does not look good in terms of appearance. Therefore, the removal trace can be covered by using the backing material Qe used when attaching the glass o4.

That is, as shown in FIG. 6, hanging pieces 11flQ7) are provided on both side edges of the backing material oe so as to completely cover the removal traces.

As described above, the present invention makes it possible to remove the remaining removed pieces after cutting the curved part for a corner by the existence of the thin part for removing the remaining removed pieces and the groove for removal formed on the outer surface side of the thin part for removing the remaining removed pieces. Since it is made easy, the removal work can be done easily and quickly by the operator without requiring any press equipment, and it is possible to reliably provide fittings with beautiful corner rounding. They have the advantage of being able to do so.

[Brief explanation of the drawing]

Figure 1 is a front view of a fitting with rounded corners, Figure 2 is a cross-sectional view of the fitting material after cutting ii1, Figure 3 is a cross-sectional view showing the state in which the glass is attached, and Figure 4 is the state in which grooves are formed. A partial diagram showing,
FIG. 5 is a partial view showing the state of formation of a curved portion for corner rounding, and FIG. 6 is a partial view showing a piece removal operation according to the method of the present invention. Code (3) Fittings material (4) (5) Side wall (9)
(II thin part for removal

Claims (3)

[Claims] (1) A recessed groove-shaped thin wall part for removal is provided on the opposing inner surfaces of a pair of side walls provided on the fitting material, and the area from the thin wall part to the side edge is removed as a piece, and the end of this fitting material is
By cutting at an angle of 5 degrees and partially cutting off the end of the removal piece, a curved part for corner rounding is formed at the end, and then formed on the thin part for removal and its outer surface side. A method for forming a corner-rounded fitting material, characterized in that the removed pieces left between the corner-rounded curved parts are removed along a linear groove for removal following the curved part. (2) Formation with rounded corners and fittings according to claim 1, in which the straight groove for removal is formed on the outer surface side of the thin walled part for removal after forming the curved part for corner rounding. Law. (3) The method for forming a fitting material with rounded corners according to claim 1, wherein the linear groove for removal is integrally extruded with the fitting material in advance together with the thin wall portion for removal.