Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Plural or complex apparatus
Patent
1992-08-31
1994-09-06
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Plural or complex apparatus
72319, 72323, 72422, B21D 504, B21D 4312
Patent
active
053437276
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates a panel bender for fixing a work to be bent at a working position and performing a process on the work by shifting a main body of a bender to the working position.
BACKGROUND ART
Conventionally, a panel bender for performing a bending process for a plate form work has been known, as disclosed in Japanese Examined Patent Publication (Kokoku) No. 61-103625.
The above-mentioned panel bender is designed to feed a work, which is transported in front of a main body of a bender, toward the main body of the bender by means of a pusher mechanism. The main body of the bender is fixed on a floor.
In the conventional panel bender, a bending process is performed for one portion at one process step. Therefore, when the bending process is performed for a plurality of portions of one work, it becomes necessary to position the work for each completion of the bending process. This results in a long period required for bending a single piece of the work and thus in low productivity.
SUMMARY OF THE INVENTION
The present invention has been made in view of the foregoing situation. Therefore, it is an object to provide a panel bender which can remarkably improve productivity in a bending process and can perform feeding in and out of works to be bent and having different widths, with a single conveyer.
In order to accomplish the above-mentioned object, there is provided, according to the present invention, a panel bender for bending a work held between a depression die vertically moved by means of a plurality of work holding cylinders fixed in alignment with regular intervals on the upper portion of a main body of the device, and a receiving die provided at the lower portion of the main body and fixed on a bed of the main body, with a downward bending die and an upward bending die provided on a pivotal arm pivoted about a support shaft by a vertical bending driving device, which is characterized in that a plurality of main bodies are provided at opposite positions across a conveyer for feeding the work to a working position within the panel bender, each of the main bodies being movable in a back and forth direction with respect to the other by a back and force feeding device, and the conveyer disposed between the main bodies being adapted to expand and contract in the width direction in cooperation with bask and forth movement of the main bodies.
The above-mentioned and other objects, aspects and advantages of the present invention will become clear to those skilled in the art from the following illustration and discussion associated with the accompanying drawings illustrating the preferred embodiment consistent with the principle of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a fragmentary perspective view showing an overall construction of one embodiment of a main body;
FIG. 2 is a section showing the construction around a work holding and releasing device;
FIG. 3 is a partially cut-out section showing the construction around a vertical being drive device;
FIG. 4 is a section taken along line IV--IV of FIG. 3;
FIG. 5 is a cross section showing a gap adjusting device;
FIG. 6 is a plan view of the vertical bending drive device;
FIGS. 7 and 8 are a plan view and a front elevation showing an arrangement of a conveyer;
FIGS. 9 and 10 are a plan view and a side elevation showing the conveyer;
FIG. 11 is a section taken along line X--X of FIG. 10;
FIGS. 12 and 13 are a partially sectioned side elevation and an enlarged section showing a back gauge device;
FIG. 14 is an enlarged side elevation showing a stopper device; and
FIG. 15 is an explanatory illustration for showing operation.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
One embodiment of the present invention will be discussed in detail with reference to the accompanying drawings.
In the drawings, the reference numeral 1 denotes a main body of a panel bender, in which a plurality of work holding cylinders 2 are mounted on a C frame 1a with equal intervals in the longitudinal direction o
REFERENCES:
patent: 4804077 (1989-02-01), John
Crane Daniel C.
Kabushiki Kaisha Komatsu Seisakusho
Kananen Ronald P.
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