JPH0890090A - Device for bending flange - Google Patents

Abstract

PURPOSE: To provide a bending device which bends a flange to an angle being summed with the lowering direction of a lift stand and the inclining direction of a slide member to slide to the inclining direction against the lowering direction with a single process. CONSTITUTION: In a flange bending device which bends a flange W1 to the angle beyond 90 deg. against a base panel W, the device is provided with a holding member 2 to hold the base panel W except the flange W1 on a mounting face 2a, a lift stand 3 to move up and down against the holding member, and a cam member 6 attached being able to displace relatively in the lift direction against the lift stand, and having a cam face 6a to incline against the lift direction of the lift stand. Further, it is provided with a restricting member 7 to restrict the lowering of the cam member in a lowering time of a prescribed amount of the lift stand, and a cam punch 10 which is supported movable following to the lift stand, and projected outside along the cam face so as to form with bending the flange into the angle beyond 90 deg. against the base panel between the lift stand and the cam face of the cam member with the lowering beyond the prescribed amount of the lift stand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a base material panel with 9
The present invention relates to a flange bending apparatus for bending a flange to an angle exceeding 0 °.

[0002]

2. Description of the Related Art Generally, when a flange is bent and formed at an angle exceeding 90 ° with respect to a base material panel, the first step of bending and forming the flange at 90 ° with respect to the base material panel and this 90 ° Desired flange bent into 90
A second step of further bending and forming at an angle exceeding 0 ° is required, and stepwise bending is performed by separate press forming devices in each step.

That is, in the first step, a holding member that holds the base material panel excluding the flange on the mounting surface, and a lift table that moves up and down in a direction orthogonal to the mounting surface of the holding member. With the press forming apparatus provided, the flange on the mounting surface is formed at about 90 ° by lowering the elevating table.

Further, in the second step, for example, as disclosed in Japanese Patent Laid-Open No. 3-81021, an upper die and a punch for holding the base material panel excluding the flange of about 90 ° formed in the first step. (Lower die) and the remaining angle (eg, base material panel) obtained by subtracting the bending angle of 90 ° in the first step from the desired angle of the flange (eg, 135 ° with respect to the base material panel) with respect to the holding surface of the punch. By a press molding device including an embossing molding portion that bends at an angle of 45 °), a sectional die having an inclined surface corresponding to the embossing molding portion, and a slide cam that moves the sectional die back and forth with respect to the punch. , Advance the sectional die together with the slide cam with respect to the punch, and cooperate with the punch and the sectional die to bend the flange bent at 90 ° to a further 45 °. Under it added and are to form the desired 135 °.

[0005]

However, in the above-mentioned prior art, in order to bend and form the flange at an angle of more than 90 ° with respect to the base material panel, a separate press forming apparatus is used for each process. It was necessary to carry out the steps, and it was impossible to bend and form the flange to an angle exceeding 90 ° with a single press forming apparatus.

The present invention has been made in view of the above points, and an object of the present invention is to provide a descending direction (elevating direction) of a lifting table and a sliding member that slides in an inclined direction with respect to the descending direction. The present invention provides a bending apparatus for bending a flange in a single step at an angle of more than 90 ° including the inclination direction.

[0007]

In order to achieve the above object, the means for solving the problems according to the invention of claim 1 is to form a flange by bending the flange at an angle exceeding 90 ° with respect to the base material panel. As a device, a holding member that holds the base material panel excluding the flange on the mounting surface, a lifting platform that moves up and down with respect to the holding member, and is attached to the lifting platform so as to be relatively displaceable in the lifting direction, A cam member having a cam surface inclined with respect to the ascending / descending direction of the elevating table, and a regulating member for abutting the cam member when the elevating table descends by a predetermined amount and restricting further descending of the cam member. A flange that is attached so as to be movable as the elevator table moves up and down, and a flange is formed between the elevator table and the cam surface of the cam member at an angle of more than 90 ° with respect to the base material panel by lowering the elevator table by a predetermined amount. Bending As described above, a cam punch protruding outward along the cam surface is provided.

[0008] The solving means taken by the invention of claim 2 is
According to the invention of claim 1, the cam member is specified, and the flange punch is formed by bending the flange at an angle of 90 ° or less with respect to the base material panel.

[0009]

With the above construction, in the invention according to claim 1,
When the flange is bent and formed at an angle exceeding 90 ° with respect to the base material panel, the base material panel excluding the flange is held on the mounting surface of the holding member, and the holding member is formed in a direction orthogonal to the base material panel. On the other hand, the lifting table is lowered together with the cam member. Then, when the elevating table descends by a predetermined amount and the cam member comes into contact with the restricting member, further lowering of the cam member is restricted. Thereafter, while the cam member is relatively displaced in the ascending / descending direction with respect to the elevating table, the elevating table descends beyond a predetermined amount. With respect to the base material panel, the flange protrudes outward along the cam surface, and the flange is formed by the descending direction of the lift table orthogonal to the base material panel and the inclination direction (projecting direction) of the cam punch along the cam surface. Against 90
It is bent to an angle exceeding °.

According to the second aspect of the present invention, the cam member is configured as a flange punch for bending and forming the flange at an angle of 90 ° or less with respect to the base material panel. In addition, the bending is continuously performed from an angle within 90 ° to an angle exceeding 90 °.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows a flange bending apparatus according to the first embodiment of the present invention. The bending apparatus 1 has a flange W1 at an angle exceeding 90 ° with respect to a pair of left and right base material panels W, W. , W1 are used for bending. Each base material panel W is provided as a component forming a part of the rain rail at the rear opening edge of a hatchback type vehicle (not shown).

As shown in FIG. 1, the bending apparatus 1 includes a pair of left and right holding members 2 for holding the pair of base material panels W, W excluding the flange W1 on the mounting surfaces 2a, 2a.
2, an elevating table 3 that moves up and down with respect to each of the holding members 2, and an extendable cylinder that can expand and contract in the elevating direction so as to be relatively displaceable in the elevating direction (up and down direction) with respect to the elevating table 3. 4 and the cam member 6 provided via the damper 5
And formed on one side portion (left side in the figure) of the cam member 6,
It is approximately 45 as it goes to one side with respect to the descending direction of the lifting platform 3.
A pair of left and right cam surfaces 6a, 6a that incline downward at an angle of °
The lower surface of the cam member 6 contacts the lower surface of the cam member 6 when the cam member 6 descends to a position beyond each base material panel W by a predetermined amount, and restricts the cam member 6 from further descending. 7, a side surface of the elevating table 3 and a cam surface 6a of the cam member 6 are slidably supported, and an inclined surface 8 is provided on a surface facing the cam surface 6a.
The slide cam 10 has a cam punch 9 whose one end at the lower end is formed at an angle of about 45 °.

The mounting surface 2a of each of the holding members 2 is formed in a shape that substantially coincides with the base material panel W in a plan view.
Flange peripheral edge corresponding portion 2b corresponding to the flange W1 peripheral edge
Are continuously formed so as to incline downward by approximately 45 ° toward the opposite mounting surface 2a side (flange W1 side). Further, the wall portion 2c on the side opposite to the mounting surface 2a that is continuous with the flange peripheral edge corresponding portion 2b of each holding member 2 has the mounting surface 2a side as the portion corresponding to the slide cam 10 goes downward at one end. While it is bent at an angle of about 45 °, the portion corresponding to the cam member 6 is formed so as to extend straight downward in conformity with the ascending / descending direction of the ascending / descending table 3, and the slide cam 10 has The inclination angle of the corresponding portion toward the mounting surface 2a is gradually reduced from the tip of one side to the other side and is converged to the portion corresponding to the cam member 6.

Front and rear wall portions 3a and 3b are provided on one side of the elevating table 3 and extend downward from the front and rear positions (left and right positions in the figure) of the lower surface. A first wear plate 11 that slides the upper surface of the slide cam 10 in the front-rear direction is provided on the lower surface of one side of the lift table 3. In addition, the front and rear wall portions 3 are provided at the front and rear surface upper positions of the slide cam 10 corresponding to the front and rear wall portions 3a and 3b.
Abutting pieces 12 and 12 that individually come into contact with a and 3b are provided, and the slide cam 10 moves back and forth by the abutting of the slide cam 10 via the abutting piece 12 on the front and rear walls 3a and 3b. Are regulated.

The cam member 6 is supported on the lower surface on the other side of the elevator 3 via the telescopic cylinder 4 and the damper 5, and the telescopic cylinder 4 and the damper 5 are mounted on the elevator 3.
When the cam member 6 descends along with the above, the cam member 6 contracts from the point of contact with the regulating member 7. And
The lower end portion of the cam member 6 has a wall portion 2c of the holding member 2.
Is formed so as to extend straight downward and is 90 ° with respect to the base material panel W between the wall portion 2c of the holding member 2 and the wall portion 2c.
The flange punch is formed by bending the flange W1 at an angle of. In this case, the bending and forming of the flange W1 by the cam member 6 at an angle of 90 ° is completed when it comes into contact with the regulating member 7.

The slide cam 10 is urged by an urging means such as a spring (not shown) so as to come into contact with the rear wall portion 3b of the elevating table 3 in the direction (rearward) through the abutment piece 12. The slide cam 10 is positioned at the upper end position of the cam surface 6a of the cam member 6. Further, in the slide cam 10, when the lowering of the cam member 6 is restricted by the contact with the restricting member 7, the inclined surface 8 slides downward along the cam surface 6a and the cam punch 9 is formed.
Of the holding member 2 by projecting outwardly.
And the flange W1 is formed by bending the base material panel W at an angle of more than 90 °. In addition, 13,
Reference numeral 13 is a support member slidably supporting the corresponding portion of the inclined surface 8 of the slide cam 10 corresponding to the portion where the cam surface 6a does not exist via the second wear plates 14 and 14.

The procedure for bending the flange W1 of the base material panel W will now be described. The base material panel W excluding the flange W1 is held on the mounting surface 2a of the holding member 2,
The lifting table 3 is lowered together with the cam member 6 from a direction orthogonal to the base material panel W. Then, when the elevating table 3 descends by a predetermined amount and the cam member 6 comes into contact with the restricting member 7, further descending of the cam member 6 is restricted. When the cam member 6 comes into contact with the regulation member 7, that is, when the lifting table 3 is lowered by a predetermined amount, the cam member 6 is lowered to a position beyond each base material panel W, and the wall portion 2c of the holding member 2 is removed. Cam member 6 between
The bending forming of the flange W1 to the angle of 90 ° is completed.

After that, when the elevating table 3 descends beyond a predetermined amount while contracting the telescopic cylinder 4 and the damper 5 between the elevating table 3 and the cam member 6, between the front and rear wall portions 3a and 3b of the elevating table 3. In the above, the slide cam 10 slides forward on the first wear plate 11, and the slide cam 10 slides in a direction inclined along each cam surface 6a of the cam member 6 with respect to the descending direction of the elevating table 3. The contact piece 12 abuts on the front wall portion 3a of the lift table 3 and the cam punch 9 projects outwardly, so that 90 ° with respect to the base material panel W with respect to the wall portion 2c of the holding member 2. Flange W to an angle beyond
The bending forming of No. 1 is completed.

As a result, the descending direction of the elevating table 3 orthogonal to the base material panel W and the inclining direction (projecting direction) of the cam punch 9 (slide cam 10) along the cam surface 6a.
Thus, the flange W1 is formed at an angle exceeding 90 ° with respect to the base material panel W in a single process by the single bending apparatus 1.
Can be bent and formed. Moreover, the cam member 6 is
Since the flange punch is formed by bending the flange W1 at an angle of 90 ° with respect to the base material panel W, the flange W1 is formed at 90 ° with respect to the base material panel W in combination with the bend forming by the cam punch 9. The bending can be continuously performed from the angle of 90 ° to the angle of more than 90 °.

Next, a second embodiment of the present invention will be described with reference to FIG.

In the second embodiment, the bending of the flange by the cam member and the bending of the flange by the slide cam are simultaneously performed.

That is, in this embodiment, as shown in FIG. 3, the bending device 21 includes a pair of left and right holding members 2 and 2.
And an elevating table 3, and the elevating table 3 supported on the elevating table 3 via an elastic member 22 such as a telescopic cylinder or a damper. A cam member 6 having an inclined cam surface 6a, a restricting member 7 with which the lower surface of the cam member 6 abuts when the lifting table 3 is lowered by a predetermined amount, and front and rear wall portions 3a, 3b of the lifting table 3.
A pair of left and right, which are slidably supported between them and slidably supported on the cam surface 6a of the cam member 6 through the inclined surface 8 and whose one end on the lower end portion is formed at an angle of about 45 °. Slide cam 10 having a cam punch 9 (only one of which is shown in the figure). The slide cam 10 includes a first wear plate 11 on the lower surface of the front wall portion 3a of the lifting table 3.
Is supported slidably in the front-back direction via
A projecting piece 24 projecting upward from the upper surface of the rear end of the slide cam 10 is slidably supported in the front-rear direction via the first wear plate 11 on the lower surface between the front and rear wall portions 3a and 3b of the elevating table 3. ing. In addition, the slide cam 10
The pulling piece 24 is pulled toward the anti-front wall portion 3a side, that is, the rear wall portion 3b side by the urging means 25 which is arranged between the front wall portion 3a of the elevating table 3 and the projecting piece 24 and includes a spring or the like. The slide cam 10 is positioned at the upper end position of the cam surface 6a of the cam member 6 by the urging force of the urging means 25.

On the lower surface of the slide cam 10 corresponding to each of the cam punches 9, there is provided an engaging piece 23 that engages with the lower surface of the cam member 6 when the elevating table 3 descends. By engaging the cam member 6 and the slide cam 10 via the piece 23, the slide cam 10 can be lowered along with the cam member 6 until the lifting table 3 is lowered by a predetermined amount. The rest of the structure of the slide cam is the same as that of the above-described embodiment, and the same parts are designated by the same reference numerals and detailed description thereof will be omitted.

In the second embodiment, the lift table 3 is moved from the direction orthogonal to the base material panel W held on the mounting surface 2a of the holding member 2 excluding the flange W1 to the cam member 6 and the slide cam. Lower with 10. And
When the elevating table 3 descends by a predetermined amount and the cam member 6 comes into contact with the regulating member 7, further lowering of the cam member 6 is regulated.
When the elevating table 3 descends by a predetermined amount when the cam member 6 contacts the regulating member 7, the cam member 6 descends to a position beyond each base material panel W and cams with the wall portion 2c of the holding member 2. The bending of the flange W1 to the angle of 90 ° by the member 6 is completed, and the cam punch 9 (slide cam 10) is completed.
Each base material panel W together with the cam member 6 through the engaging piece 23.
The flange W at an angle of more than 90 ° by the cam punch 9 with the wall portion 2c of the holding member 2.
Bend 1 and start forming. After that, the lift 3 and the cam member 6
When the elevating table descends beyond a predetermined amount while contracting the expansion and contraction member 22 between and, the slide cam 10 slides forward on each first wear plate 11, and the cam punch 9 moves in the descending direction of the elevating table 3. On the other hand, the cam member 6 projects in a direction inclining along each cam surface 6a, and between the projecting cam punch 9 and the wall portion 2c of the holding member 2 is 9 with respect to the base material panel W.
The bending of the flange W1 to an angle exceeding 0 ° is completed.

As a result, the flanges W1 having different angles with respect to the base material panel W are simultaneously bent and formed with almost no time difference, and the flanges W1 having different angles are bent and formed by the cam member 6 (flange punch) and the cam punch 9. Due to the time difference between the start of bending and forming, both members 6,
It is possible to effectively and continuously form the flange W1 at an angle of more than 90 ° with respect to the base material panel W in a single step by a single bending and forming apparatus 1 without causing a defect such as a die gap between the nine. It can be bent.

The present invention is not limited to the above embodiments, but includes various other modifications.
For example, in each of the above embodiments, the cam member 6 is configured as a flange punch that bends the flange W1 at an angle of 90 ° with respect to the base material panel W, but the cam member is formed between the cam member 6 and the wall portion of the holding member. The flange punch may be formed by bending the flange at an angle of less than 90 ° with respect to the base material panel.

Further, in each of the above-mentioned embodiments, the flange W1 is continuously formed by bending from the angle of 90 ° to the base material panel W to an angle exceeding 90 °, but the flange is 90 ° to the base material panel. Of course, it may be bent and formed only at an angle exceeding.

[0029]

As described above, according to the flange bending apparatus of the first aspect of the invention, the descending direction of the lift table with the cam member, which is orthogonal to the base material panel, and the contact with the restricting member. Since the flange is bent and formed at an angle that matches the protruding direction of the cam punch along the cam surface of the cam member that has stopped descending due to contact, the flange can be bent to an angle exceeding 90 ° in a single step with a single bending and forming device. It can be bent.

According to the flange bending apparatus of the second aspect of the present invention, the cam member is formed as a flange punch for bending the flange to an angle within 90 °, and 90 ° in combination with the bending by the cam punch. Bending can be continuously performed from an angle within the range to an angle exceeding 90 °.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a bending apparatus according to a first embodiment of the present invention.

FIG. 2 is a plan view of the bending apparatus.

FIG. 3 is a view corresponding to FIG. 1 according to a second embodiment of the present invention.

[Explanation of symbols]

 1, 21 Bending device 2 Holding member 2a Mounting surface 3 Lifting table 6 Cam member 6a Cam surface 7 Restricting member 10 Cam punch 22 Stretching member W Base material panel W1 Flange

Claims (2)

[Claims] 1. A flange bending apparatus for bending a flange at an angle exceeding 90 ° with respect to a base material panel, comprising a holding member for holding the base material panel excluding the flange on a mounting surface. An elevating table that moves up and down with respect to the holding member, and is attached so as to be relatively displaceable in the elevating direction with respect to the elevating table.
A cam member having a cam surface inclined with respect to the ascending / descending direction of the elevating table, and a regulating member for abutting the cam member when the elevating table descends by a predetermined amount and restricting further descending of the cam member. The movable base is movably attached as the lift base moves up and down, and when the lift base lowers by a predetermined amount, a flange is formed between the lift base and the cam surface of the cam member at an angle of more than 90 ° with respect to the base material panel. A flange bending forming apparatus, comprising: a cam punch protruding outward along a cam surface so as to perform bending forming. 2. The cam member is formed on the base material panel by 9
The flange bending apparatus according to claim 1, which is a flange punch that bends and forms the flange at an angle of 0 ° or less.