JPH0713877Y2 - Work separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a work separating device for separating a bent work from a lower mold.

(Prior Art) As a conventional work separating device, as shown in FIGS. 5 and 6, a lifting rod is provided in a hole portion 101 formed in a central portion of a bend lower mold 100.
A support plate 103 is fixed to the tip of 102, support rods 104 are erected at four corners on the support plate 103, suction couplers 105 are attached to these support rods 104, and the work transfer device 106 mounts them on the lower die 100. After the placed work W is molded by the first upper mold 107, the second upper mold 108 and the wrinkle pressing device 120, the elevating rod 102 is raised to adsorb the suction coupler 105 to the work W, and further raised to push the work W. It is known that the work W is separated from the raising / lowering mold 100.

(Problems to be Solved by the Invention) In the conventional work separating apparatus, when the position of the suction coupler 105 is limited to the center of the work W due to the shape of the work, the suction coupler 105 is lifted to raise the work. When the workpiece W is sucked up by W and further pushed up, as shown in FIG. 7, the bent portion W1 of the workpiece W in which the end of the workpiece is bent downward and the side surface of the lower die 100 interfere with each other to cause the workpiece W to move. It had a problem of being deformed.

The present invention has been made in view of the above problems of the conventional technique, and an object thereof is to prevent deformation of the work without causing an end portion of the work to be caught in the lower mold after bend forming. An object of the present invention is to provide a simple work separating device that can smoothly separate a work from the lower mold.

(Means for Solving the Problem) In order to solve the above problems, the present invention forms a concave portion at a portion where a holding member of a wrinkle holding device arranged at a peripheral portion of a bend lower die faces a lower surface of the bend lower die, The work pushing-up member is pressed in the concave portion against the peripheral surface of the lower mold of the bend by an elastic member and is rotatably supported.

(Operation) In the present invention configured as described above, the work pushing member pushes up the peripheral edge of the work by moving upward along the peripheral surface of the lower die, so that the end of the work is not caught by the lower die and The work can be separated from the lower mold without deforming it.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a lower mold and an upper mold of a bend in which a wrinkle holding device having a work separating device according to the present invention is arranged.
The figure is an enlarged front view of an essential part, and FIGS. 3 and 4 are an enlarged sectional view of an essential part and an operation explanatory view.

As shown in FIG. 1, in the bending process, a plurality of wrinkle retainers 1 are arranged on the periphery of the bend lower die 100, and the first upper die 107 and the second upper die 107, which are supported above the lower die 100 by lifting rods 109 and 110, respectively. The upper mold 108 is arranged and configured.

In the wrinkle holding device 1, a holding member 5 is arranged at the tip of a piston rod 4 of a cylinder 3 fixedly mounted on a peripheral surface of a lower mold 100 with a supporting member 2 interposed therebetween.

The holding member 5 has a wrinkle holding surface 6 following the shape of the work W and an engaging portion 7 that engages with the engaging portion 111 of the second upper die 108. Further, as shown in FIGS. 2 and 3, a concave portion 8 is formed at a portion where the pressing member 5 faces the peripheral surface of the lower mold 100.
A work pushing member 9 is rotatably supported while being biased by a spring 10 so as to press the peripheral surface of the lower die 100.

On the other hand, the second upper mold 108 has the wrinkle holding surface 6 of the wrinkle holding device 1.
Further, a pressing surface 112 that comes into pressure contact with the work W, a work bending surface 113 on the inside, and an engaging portion 111 on the outside are formed. still,
114 is a positioning pin for positioning the work W on the lower die 100.

The operation of the work separating device configured as described above will be described below.

As shown in FIG. 3, the work W is pressed against the lower die 100 and the wrinkle holding surface 6 of the wrinkle holding device 1 by the first upper die 107, and then the second upper die 108 descends as shown in FIG. Then, the pressing surface 112 presses down the pressing member 5, and the work bending surface 113
Thus, the bent portion W1 is formed at the edge of the work W.

Next, the piston rod 4 of the cylinder 3 rises in conjunction with the rise of the first and second upper dies 107, 108, and the work pushing-up member 9 supported in the recess 8 of the pressing member 5 is pushed by the spring 10.
The work W is pressed against the peripheral surface of the lower mold 100 and is slid to raise the end of the bent portion W1 of the work W and move up to the position of the chain double-dashed line shown in FIG.
Release smoothly from.

Therefore, the work W can be separated from the lower mold 100 by the wrinkle holding device 1 equipped with the work separating device instead of the conventional device for pushing up the central portion of the work W. The sixth
In the case of a large work such as the outer panel of the door shown in the figure, the work separating device of the present invention may be provided together with the conventional device.

(Effects of the Invention) As described above, according to the present invention, the work can be smoothly separated from the lower mold without the lower mold being caught by the end portion of the work and without deformation of the work.

Further, it can be easily provided in the conventional wrinkle pressing device.

[Brief description of drawings]

FIG. 1 is a schematic view showing a lower mold and an upper mold of a bend in which a wrinkle holding device having a work separating device according to the present invention is arranged.
The figure is an enlarged front view of the main part, FIGS. 3 and 4 are enlarged cross-sectional views of the main part and operation explanatory views, FIG. 5 is a schematic view showing a lower mold and an upper mold of a bend in which a conventional device is arranged, and FIG. FIG. 5 is a plan view and FIG. 7 is an operation explanatory view of the conventional device. In the drawings, 1 is a wrinkle pressing device, 5 is a pressing member, 8 is a concave portion, 9 is a work lifting member, and 10 is an elastic member.

Claims (1)

[Scope of utility model registration request] 1. A pressing member of a wrinkle pressing device arranged on the periphery of a lower bend mold forms a recess at a portion facing a peripheral surface of the lower bend mold, and a work pushing member is provided in the recess to surround the lower bend mold. A work separating device, which is configured so as to be pressed against a surface by an elastic member and rotatably supported.