JP3760195B2 - Cam-type upward bending apparatus and cam-type upward bending method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cam-type upward bending apparatus and a cam-type upward bending method suitable for bending a flange portion of a panel in two different directions.
[0002]
[Prior art]
Conventionally, when bending is performed such that one of the two flange portions 101, 102 provided on the panel 100 as shown in FIG. 7 is bent downward and the other flange portion 102 is bent upward. First, in the first step, one flange portion 101 is bent downward as shown on the left side of FIG. 8, and then in the second step, the panel 100 is inverted and the other side as shown in the right column of FIG. As a result, two flange portions 101 and 102 having different bending directions up and down as shown in FIG. 7 were formed.
[0003]
A conventional example of a press machine for bending the flange portions 101 and 102 will be described with reference to FIG.
[0004]
In the press machine shown in FIG. 9, the panel 100 is placed on the holder 111 of the lower mold 110 so that the flange portion 101 protrudes from the edge of the holder 111. Then, the upper die 120 is driven downward and the panel 100 is pressed by the pad 122, and the flange portion 101 is bent downward by the curved blade 121 provided on the upper die 120 to return the upper die 120 to its original state. Next, the panel 100 is turned upside down so that the flange portion 102 protrudes from the edge of the holder 111, and then the upper die 120 is driven to descend again, and the flange portion 102 is lowered by the curved blade 121 provided on the upper die 120. It is intended to be bent.
[0005]
That is, in the case of the press working machine shown in FIG. 9, the front and back of the panel, which is the object to be processed, are reversed to form two flange portions 101 and 102 having different bending directions in two steps.
[0006]
Further, as a press working machine in which the bending of the flange portion 101 and the like is performed in one step, the one shown in FIG. 10 is also known.
[0007]
The press machine shown in FIG. 10 includes pads 142 and 132 and curved blades 143 and 133 on both the upper die 141 and the lower die 131, and the panel 100 is sandwiched between the pads 132 and 142. The flange portions 101a and 102a projecting from both sides are bent downward and upward in one step.
[0008]
[Problems to be solved by the invention]
However, in the case of the conventional means for performing bending as described above, there are the following problems.
That is, when using a press machine as shown in FIG. 9, the two flange portions 101 and 102 provided on the panel 100 cannot be bent in different directions in one process, and two processes must be spent. is there. Also, it is necessary to invert the front and back of the panel each time.
[0009]
Further, when using a one-step press machine as shown in FIG. 10, the flange portions 101a and 102a protruding from the panel 100 on both sides can be bent in different directions in one step, When the flange portions 101a and 102a for performing the projecting are protruded from the panel 100 in the same direction, it cannot be dealt with, and furthermore, it is difficult to perform a hole punching process, a bending process, a hole punching process, or the like. is there.
[0010]
The present invention has been made in view of the above circumstances. A cam-type upward bending apparatus and a cam-type upward bending method capable of bending a flange portion provided on a panel upward in only one step using a cam mechanism. The purpose is to provide.
[0011]
[Means for Solving the Problems]
The cam-type upward bending apparatus according to the first aspect of the present invention includes a lower mold having a receiving surface on which a panel having a flange portion projecting is placed, and an upper part disposed above the lower mold and driven up and down relative to the lower mold. A panel mounted on the receiving surface of the lower mold by receiving a contact force from the lower mold as the upper mold is driven to descend. A cam follower that is attached to the upper mold so as to be movable in the horizontal direction and that has a cam follower projecting thereon, a bent blade for a flange portion that is attached to the cam follower support, and a cam follower that engages the upper By lowering the mold, it is guided to the lower part of the flange part while avoiding the flange part where the curved blade protrudes from the panel by the downward trajectory from the top dead center to the bottom dead center. From the rising trajectory to the top dead center It is characterized in that it has a cam driver having a cam surface for bending the blade from the lower surface side of the flange portion by abutting the flange portion upward.
[0012]
According to the present invention, the panel is clamped by the lower mold and the pad, and the cam follower and the curved blade interlocking with the cam follower are moved along the locus as described above in accordance with the shape of the cam surface of the cam driver. It is possible to provide a cam type upward bending apparatus capable of bending the provided flange portion upward in only one step.
[0013]
The cam-type upward bending method according to the second aspect of the invention is such that a panel having a flange portion projecting is placed on the receiving surface of the lower mold, and the panel is mounted by a pad provided on the upper mold as the upper mold is lowered. A cam-type upward bending method in which the flange portion is bent upward by a flanged blade for a flange portion attached to a cam follower support body provided with a cam follower, and provided to the cam follower and the cam driver by lowering drive of the upper die By engaging with the cam surface by the downward trajectory from the top dead center to the bottom dead center, the curved blade is guided below the flange portion while avoiding the flange portion protruding from the panel, and the upper mold is driven upward. By bending the cam follower and the cam surface provided on the cam driver by the ascending locus from the bottom dead center to the top dead center, the curved blade is brought into contact from the lower surface side of the flange portion to bend the flange portion upward. It is an feature.
[0014]
According to this invention, using the configuration of the invention according to claim 1, the panel is clamped by the lower mold and the pad, and the cam follower and the curved blade interlocked with the cam follower corresponding to the shape of the cam surface of the cam driver. Is moved along the trajectory as described above, it is possible to provide a cam-type upward bending method in which the flange portion provided on the panel can be bent upward in only one step.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
1 and 2 are schematic views showing the configuration of a cam type upward bending apparatus according to an embodiment of the present invention.
This cam type upward bending apparatus is provided with a lower mold 2 provided with a receiving surface 2a on which a panel 1 with a flange 1a projecting is placed, and is driven up and down facing the lower mold 2 disposed above the lower mold 2. The upper mold 3 is provided.
[0016]
The panel 1 is placed on the receiving surface 2a in a state where the flange portion 1a projects from the edge of the receiving surface 2a of the lower mold 2.
Further, a pad 4 that presses the panel 1 placed on the receiving surface 2a of the lower mold 2 is attached to the upper mold 3 so as to be movable in a vertically downward direction, and the upper mold 3 is lowered. The panel 1 is clamped by receiving a contact force from the lower mold 2 as it is driven. The upper die 3 includes a cam follower support 6 provided with a roller-shaped cam follower 5 protruding. The cam follower support 6 is attached to be movable in the horizontal direction, and the cam follower support 6 has a flange portion. A bending blade 9 for bending 1a is attached with the cutting edge facing the pad 4 side.
[0017]
Further, this cam type upward bending apparatus engages with the cam follower 5 and causes the curved blade 9 to protrude from the panel 1 by the downward trajectory from the top dead center P1 to the bottom dead center P2 by the downward driving of the upper die 3. The curved blade 9 is guided by the upward trajectory from the bottom dead center P2 to the top dead center P1 by the upward drive of the upper mold 3 while passing through the side of the flange part 1a provided and being driven upward. The cam driver 11 includes a cam surface 10 having a substantially parallelogram shape which is brought into contact with the lower surface side of the flange portion 1a and bends the flange portion 1a upward.
The cam driver 11 is fixed to the lower mold 2 in an arrangement located directly below the upper mold 3.
[0018]
The pad 4 is supported by a slide support 15 provided on the side wall 3a of the upper mold 3 so as to be movable in the vertical direction, and between the upper surface of the pad 4 and the side lower surface 3b of the upper mold 3. It is urged vertically downward by an intervening pad operating spring 16.
[0019]
The cam follower support 6 is supported by a slide support 17 provided on the lower surface 3c of the upper die 3 so as to be movable in the horizontal direction, and is also provided in a recess 3d provided on the lower surface 3c of the upper die 3. By 18a and 18b, it is urged | biased by the horizontal direction (left-right both directions) via the needle | mover 6a attached to the said cam follower support body 6. FIG.
[0020]
Next, a method of bending the flange portion 1a of the panel 1 by the cam type upward bending apparatus having the above-described configuration will be described with reference to FIGS.
First, the panel 1 is placed on the receiving surface 2a of the lower mold 2, the flange portion 1a of the panel 1 is projected from the edge of the receiving surface 2a with a predetermined width, and the upper mold 3 is driven downward.
[0021]
As the upper die 3 is lowered, the pad 4 comes into contact with the panel 1 on the receiving surface 2a, receives the contact force from the lower die 3, and sandwiches the panel 1 with the receiving surface 2a by the urging force of the pad operating spring 16. Press.
[0022]
When the upper die 3 is further lowered, the roller-shaped cam follower 5 is engaged with the cam surface 10 of the cam driver 11, and the cam follower support 6 moves while drawing a locus as shown in FIG.
That is, while the curved follower 9 integral with the cam follower support 6 passes through the side of the flange portion 1a projecting from the panel 1 by the descending locus from the top dead center P1 to the bottom dead center P2 by the cam follower 5. It leads below this flange part 1a.
[0023]
At this time, one cam operating spring 18b presses the cam follower 5 of the cam follower support 6 against the cam surface 10 via the moving element 6a to ensure the movement locus of the cam follower 5.
[0024]
Next, when the upper follower 3 is driven upward after the cam follower 5 is engaged with the cam surface 10 of the cam driver 11 and reaches the bottom dead center P2, the cam follower 5 moves from the bottom dead center P2 to the top dead center P1. Draw a rising trajectory.
[0025]
At this time, the other cam operating spring 18a presses the cam follower 5 of the cam follower support 6 against the cam surface 10 via the moving element 6a to ensure the movement locus of the cam follower 5.
[0026]
Due to the rising trajectory from the bottom dead center P2 to the top dead center P1 by the cam follower 5, the curved blade 9 integrated with the cam follower support 6 approaches the lower region of the flange portion 1a and further rises to the lower surface of the flange portion 1a. Abutting from the side, the flange portion 1a is bent upward.
[0027]
When the cam follower 5 reaches the top dead center P1 and returns to the position before the descent, the curved blade 9 is also moved to the side of the flange portion 1a and returned to the position immediately before the cam follower 5 is engaged with the cam surface 10.
[0028]
Furthermore, the pad 4 is also detached upward from the panel 1 by the upward drive to the initial position of the upper mold 3, and thereby the upper space of the receiving surface 2a is secured, so that the bent flange portion 1a is The panel 1 having it can be taken out from this cam type upward bending apparatus.
[0029]
In this way, the upward bending of the flange portion 1a can be performed in one step using the cam type upward bending apparatus of the present embodiment.
[0030]
In the case of the panel 1 having a plurality of flange portions 1a protruding, the length of the blade edge portion for bending the curved blade 9 is set to be equal to or larger than the dimension between the plurality of flange portions 1a. In the same manner as above, the upward bending of the plurality of flange portions 1a can be performed in one step.
[0031]
【The invention's effect】
According to the present invention, it is possible to provide a cam type upward bending apparatus and method that can bend the flange portion provided on the panel upward in only one step by utilizing the shape of the cam surface of the cam driver.
[0032]
Further, according to the present invention, it is possible to provide a cam type upward bending apparatus and a method for bending the flange portion provided on the panel upward in only one step.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a cam type upward bending apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic side view of the cam-type upward bending apparatus according to the embodiment of the present invention.
FIG. 3 is a diagram showing an upward bending process of a flange portion by the cam type upward bending apparatus of the present embodiment.
FIG. 4 is a diagram showing an upward bending process of the flange portion by the cam type upward bending apparatus of the present embodiment.
FIG. 5 is a diagram showing an upward bending process of the flange portion by the cam type upward bending apparatus of the present embodiment.
FIG. 6 is an explanatory view showing a cam locus of a flange portion in the cam type upward bending apparatus of the present embodiment.
FIG. 7 is a perspective view showing a panel in which two flange portions for bending are projected.
FIG. 8 is a process explanatory diagram in the case of bending two flange portions to be bent in different directions.
FIG. 9 is a schematic view showing an example of a conventional press machine.
FIG. 10 is a schematic view showing another example of a conventional press machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Panel 1a Flange part 2 Lower mold | type 2a Receiving surface 3 Upper mold | type 4 Pad 5 Cam follower 6 Cam follower support body 6a Actuator 9 Bending blade 10 Cam surface 11 Cam driver 16 Pat operating spring 18a Cam operating spring

Claims (2)

A lower mold provided with a receiving surface for placing a panel with a protruding flange,
An upper mold disposed above the lower mold and driven up and down with respect to the lower mold;
The upper die is movably attached in a state of being biased vertically downward, and receives a contact force from the lower die as the upper die is driven downward to sandwich the panel placed on the receiving surface of the lower die. A putting pad,
A cam follower support that is attached to the upper mold so as to be movable in the horizontal direction and has a cam follower protruding therefrom;
A curved blade for the flange portion attached to the cam follower support;
Engage with the cam follower, and by lowering drive of the upper mold, the lower blade is guided from the top dead center to the bottom dead center, avoiding the flange portion projecting from the panel, and guided below the flange portion. A cam driver having a cam surface for bending the flange portion upward by bringing the curved blade into contact with the lower surface side of the flange portion by an upward trajectory from the bottom dead center to the top dead center by the upward drive of the upper die When,
A cam type upward bending apparatus characterized by comprising: A panel with a flange portion projecting is placed on the receiving surface of the lower mold, and the panel is clamped by a pad provided on the upper mold as the upper mold is lowered.
A cam-type upward bending method in which the flange portion is bent upward by a bent blade for the flange portion attached to a cam follower support provided with a cam follower,
A flange portion in which the curved blade protrudes from the panel by engagement of the cam follower and the cam surface provided in the cam driver by a downward trajectory from the top dead center to the bottom dead center by the lower mold lowering drive. While avoiding, guide below this flange,
Due to the upward drive of the upper mold, the curved blade is brought into contact with the cam follower and the cam surface provided on the cam driver from the lower surface side of the flange portion by the engagement by the upward trajectory from the bottom dead center to the top dead center. That this flange is bent upward,
A cam type upward bending method.

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