Patent Application
20050188739
1. Field of the Invention
The present invention relates to a furniture structure having a bamboo-like shape, particularly to a furniture structure having a bamboo-like shape with bulged-flanges.
2. Description of the Prior Art
A conventional structure with a extruded bamboo-like shape, disclosed in patent announcement no. 267406 of R.O.C as a thereafter recited reference, has primary features of construction as following: two parallel rails installed on both sides on the top of a stand, a movement seat is installed on the rail, a lever is installed at the square end of the seat, a push seat is fixed on the top of the lever, and again a lower-die is installed on the movement seat, a guide-column is installed on both ends of the lower-die, a semi-circular molding groove is installed in the lower-die and an invaginated ring groove in the molding groove connected to an air port of the outside end of the lower-die, an matching upper-die is installed on the top of the lower-die, the upper-die is glide-sheathed on the guide-column and has a molding groove, a ring, an air port corresponding with the lower-die, and the top end of the upper-die is connected to the end of the push axis fixed on the push seat, a draw seat is installed on the bottom of the movement seat, and a end of the draw seat is connected to the push axis of a push cylinder, so that a slight bulged joint can be made from a tube material according with the molding speed of the movement seat. Such a construction has many faults, according to the recited reference, such as, too many components such as a lever, a push seat, a lower-die, an upper-die, and a draw seat, too complex operations for driving the draw seat and the movement seat, and easy damage.
Accordingly, it can be seen that the above-described conventional products still has many drawbacks, and are not designed well, and need to be improved urgently.
In view of disadvantages derived from the above-described conventional ways for extruding a bamboo-like structure, the present inventor had devoted to improve and innovate, and, after studying intensively for years, developed successfully a furniture structure having a bamboo-like shape according to the invention.
The object of the present invention is to provide a furniture structure having a bamboo-like shape with bulged-flanges, which can be formed from a metal-tube.
The further object of the present invention is to provide a furniture structure, having a bamboo-like shape, after a metal-tube protrudes the prop-ups of the middle-die and places in the body of the middle-die, which can be rotated by manual operation, according with the requirement of a manufacturer, via the molding process of the bulged-flange structure of the present invention, and thus a bulged-flange structure with various features and pitches can be made by manual operation so that the overall structure of the furniture can more possess the bamboo feature.
The furniture structure having bamboo-like shape, capable of achieving the above-mentioned objects, comprises:
These features and advantages of the present invention will be fully understood and appreciated from the following detailed description of the accompanying Drawings.
The drawings disclose an illustrative embodiment of the present invention which serves to exemplify the various advantages and objects hereof, and are as follows:
Referring to
The number of the prop-ups 32 can be adjusted according to the processing requirement. That is, 2 prop-ups 32, 3 prop-ups 32, or a plurality of prop-ups 32 can be applied to meet the processing requirement for spreading the prop-ups 32 of the middle-die 3 and to achieve the same tight-drawing effect.
After the metal-tube 1 is constructed by the above-mentioned components, the hollow-hole 11 of the metal-tube 1 is placed in the middle-die 3 of the present invention, then the upper-die 4 and the lower-die 5 is closed-up, then the tensile-rod 2 is moved to the body 31 of the middle-die 3 along the prop-ups 32, the prop-ups 32 of the fixed middle-die 3 is expanded outward further so that the metal-tube is expanded and molded as a bulged-flange 12 at a suitable position. Since the guide-slant 21 of the tensile-rod 2 and the molding portion 41 of the upper-die 4 and the lower-die 5 are collocated well, the prop-ups 32 of the middle-die 3 will not be damaged due to the first bulging-flange 321 is spread outward excessively. Furthermore, the space between the first bulging-flange 321 and the molding portion 41 of the upper-die 4 and the lower-die 5 can be adjusted according with the movement distance of the guide-slant 21 of the tensile-rod 2, such that the metal-tube 1 can be processed easily to form the buldged-flange 12.
More, for taking out the finished metal-tube 1, when the upper-die 4 and the lower-die 5 are separated, the metal-tube 1 is moved backward to release the spreading outward status of the prop-ups 32 of the middle-die 3, so that the metal-tube 1 can be taken from the upper-die 4 and the lower-die 5 easily. Thus, the finished metal-tube 1 has a bulged-flange 12 per a suitable distance and the metal-tube 1 between the bulged-flanges 12 still is an elongated tube.
Referring to
Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.
