JPS643544Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a drawing and cutting mold for a press that can cut a grooved material at the same time as forming a drawing part and also make it possible to square the drawing part.

[Background technology]

For example, as shown in FIG. 9, by providing a narrow constricted part a at one end of the channel-shaped member W, and fitting the constricted part a into the groove of the other channel-shaped member W, and joining it into a rectangular shape, for example, For example, in a dry construction building, the framework of architectural panels used for walls, floors, etc. is formed. Since the end portions were formed by press working each time, two steps of cutting and drawing were required, resulting in poor productivity.

[Purpose of invention]

This invention improves productivity by making it possible to draw and cut in the same process, and also makes it possible to properly square the ends of the drawing part. (hereinafter referred to as a mold), one embodiment of the present invention will be described below based on the drawings.

[Disclosure of invention]

Embodiment In FIGS. 1 to 8, the mold 1 of the present invention has side pieces w on both sides of the middle piece w1 (shown in FIGS. 2 and 8).
2 are provided at right angles and in the same direction to draw and cut a grooved material W having a U-shaped cross section. are placed adjacent to each other, and the channel material W is carried from a stationary drawing die 2 toward a movable drawing die 3. The movable drawing die 3 is shown in the left half of Figure 2 before drawing, and in the right half after drawing is completed.
As shown in FIG. 3, the movable drawing die 3 includes an upper die 6 and a lower die 7, and the lower die 7 has a middle piece of the groove shaped material W. As shown in FIG. It has an insertion part 9 for inserting w1 downward, and a narrow part 10 for forming a narrow constricted part s on its side piece w2, and the lower mold 7 has an insertion part 9 as shown in FIGS. 6 and 7. The corner portion 13 is formed by notching the back portion of the groove-shaped member W starting from the end of the constricted portion s to the width of the insertion portion 9 . Further, the upper mold 6 is provided with a molding part 12 at the lower end of the base 11 that extends into the narrow part 10 to form the narrowed part s therebetween. A corner portion 16 that hangs down from the base portion 11 to the molded portion 12 by a short length is formed at a position where the side piece w2 of the channel-shaped member W is interposed therebetween. The upper die 6 is inserted into a dovetail groove 15 provided in the bolster 14 and can move in a direction perpendicular to the groove-shaped member W.

The lower mold 7 is guided by a guide 17 and descends diagonally downward. The guide tool 17 is a guide surface 1 that guides the slope formed by cutting out the upper and lower ridges of the lower mold 7 that face each other.
9 and 19; a cam shaft 23 that is biased upwardly by a spring 21 at one end of the guide piece 20 and has a cam portion 22 formed of a notched groove recessed downward; a push shaft 27 that hangs down from the bolster 14;
presses down the cam shaft 23, causing the cam portion 22 to
When the head of the receiving piece 25 enters and engages,
The lower mold 7 can be moved diagonally downward by retreating the triangular piece 30 provided at the front end of the receiving piece 25 and in contact with the slope provided on the other lower ridge of the lower mold 7. Further, the cam part 22 is formed so that the head of the receiving piece 25 is inserted into the lower part at the same time as the drawing process by the upper mold 6 and the lower mold 7 is completed, as shown in the right half of FIG. The mold 7 descends obliquely downward together with the upper mold 6 as the upper mold 6 continues to descend during the drawing process.

The stationary drawing die 2 similarly includes a lower die 37 in which an insertion portion 9 and a narrow portion 10 are provided, and an upper die 36 in which a forming portion 40 is provided at the lower end of a base portion 39. In addition, the lower die 37 has a corner portion 13 at the end of the aperture portion s.
A corner portion 38 similar to that shown in FIG. The upper mold 36 has a protruding end 44 at its lower end and is loosely inserted into a guide shaft 45 bolted to the bolster 14 so as to be movable up and down, and is suspended by a hanging bolt 47 provided on the upper mold 36 and the bolster 14. . In addition, the upper die 36 has a hanging bolt 4.
7 is pulled upward by a spring 49 on the lower surface. The guide tool 51 allows the upper mold 36 to stand still against the lowering of the bolster 14 following the drawing process. The guide 51 has a follower 53 that passes through the horizontal groove of the upper mold 36 and a cam piece 56 that is screwed to a vertical piece 55 provided on the side of the lower mold 37.
When the upper mold 36 is pulled up, the front end slope retreats due to the guide portion 57 projecting above the lower mold 37.
At the push-down cutting stage, the guide shaft 45 presses down the lower mold 37 via the follower 53 to perform the drawing process, and during the process, the rear end of the follower 53
By coming into contact with the cam piece 56 and moving forward, the protruding end 44 of the guide shaft 45 freely descends into the recess 59 on the upper part of the follower 53, so that the upper Mold 36 may be stationary. Note that a gap g is provided in advance between the bolster 14 and the upper mold 36.

Operation In the mold 1, when the bolster 14 is pulled up, the grooved member W is inserted, and by pushing it down, a continuous drawn part s is formed, and as mentioned above, only the movable drawing die 3 is used as a guide tool. 17 and moves diagonally downward due to the downward advance of the upper die 6 that continues following the drawing process, while the stationary drawing die 2 remains stationary and strongly presses the grooved material W. The material W is sheared at the constriction section s. In addition, the grooved member W has corner portions 13, 3 at both ends of the constricted portion s.
8 and the corner portions 16 and 41, it is possible to form a sharp corner. Note that the corner portions 16 have a small length, and even if the pulling distance of the upper bolster 14 is small, it is possible to prevent collision with the constricted portion s when feeding the grooved material W.

[Effect of idea]

As mentioned above, the mold of the present invention has a stationary drawing die and a movable drawing die adjacent to each other, and the movable drawing die is equipped with a guide for moving the drawing die obliquely. It is possible to draw the side pieces of the channel-shaped material and then cut it in one process, and to form a drawn part at each end of the channel-shaped material. Productivity can be greatly improved compared to machining work performed on each end. In addition, since the channel-shaped material is single-cut by shearing, there is no generation of chips, which improves the yield of material and improves the finish of the cut surface. Since it is provided, excellent effects such as improving the angular precision of the aperture part can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the mold of the present invention, Fig. 2 is a sectional view showing a movable drawing die that can be adopted in the present invention, and Fig. 3 is a cutaway view of the channel member. 4 is a sectional view showing a stationary drawing die that can be adopted in the present invention, FIG. 5 is a sectional view showing a state in which it is slowly engaged in drawing processing, and FIG. 6 is an example of an upper die and a lower die. A perspective view, FIG. 7 is a cross-sectional view of a stationary and movable drawing die, FIG. 8 is a perspective view illustrating a drawing die formed using the mold of the present invention, and FIG. 9 is a cross-sectional view of a drawing die produced using the mold of the present invention. FIG. 2...Static aperture die, 3...Movable aperture die, 6
...Top mold, 7...Bottom mold, 13...Corner part, 16
... Corner, 17 ... Guide tool, 20 ... Guide piece, 2
2... Step portion, 23... Camshaft, 25... Receiving piece, 27... Push shaft, 36... Upper die, 37... Lower die, 38... Corner portion, 41... Corner portion.

Claims (1)

[Scope of utility model registration request] A drawing and cutting die for a press that draws and cuts a channel material having a U-shaped cross section by providing side pieces extending at right angles and in the same direction on both sides of a middle piece, Each drawing die is provided with a drawing die and a movable drawing die, and each drawing die has a lower die on which the grooved material passing through each drawing die is placed with the middle piece below, and a lower die that advances and retreats toward the lower die. and an upper mold forming a concave drawing part on the side piece of the grooved material, and only the drawing mold is movable relative to the stationary mold which remains stationary by the advancement of the upper mold subsequent to the drawing process. A guide tool is attached to cut the grooved material between the stationary drawing die and the movable drawing die by guiding it diagonally downward, while squaring both ends of the drawing part on the lower die of each drawing die. A drawing/cutting mold for a press, which is provided with a corner portion, and a corner portion that fits into the corner portion through a side piece of a channel member is formed on the upper die.