JP2003230921A - Compound press die - Google Patents

Compound press die

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Publication number
JP2003230921A
JP2003230921A JP2002035544A JP2002035544A JP2003230921A JP 2003230921 A JP2003230921 A JP 2003230921A JP 2002035544 A JP2002035544 A JP 2002035544A JP 2002035544 A JP2002035544 A JP 2002035544A JP 2003230921 A JP2003230921 A JP 2003230921A
Authority
JP
Japan
Prior art keywords
die
piercing
flange
inverse
work
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002035544A
Other languages
Japanese (ja)
Other versions
JP3964221B2 (en
Inventor
Yoshitaka Matsubara
義孝 松原
Original Assignee
Fuji Heavy Ind Ltd
富士重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Heavy Ind Ltd, 富士重工業株式会社 filed Critical Fuji Heavy Ind Ltd
Priority to JP2002035544A priority Critical patent/JP3964221B2/en
Publication of JP2003230921A publication Critical patent/JP2003230921A/en
Application granted granted Critical
Publication of JP3964221B2 publication Critical patent/JP3964221B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

(57) [Problem] To provide a combined working press die capable of performing high-precision working when performing inverse bending and piercing on a work in one pressing step. A composite processing press die (1) has a lower die (10) integrally fixed to an upper part thereof, and a piercing die (16) for holding a work (W) by a downward movement of an upper die (30), and a slidably provided upper part of the lower die (10). The piercing punch 24 moves in the piercing direction by the downward movement of the upper die 30 and cooperates with the piercing die 16 to pierce one flange portion Fh of the work W, and is slidable on the upper portion of the lower die 10. An inverse die 29 which is provided to be moved to an inverse machining position by a downward movement of the upper die 30;
However, there is provided an inverse bending blade 32 slidably provided at a lower portion thereof, which presses the other flange portion Fb of the work W against the inverse die 29 by downward movement of the upper die 30 to perform inverse bending.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite working press die, and more particularly, to a composite die in which one flange portion of a work is pierced and the other flange portion is inversely bent by downward movement of an upper die relative to a lower die. Processing press die.

[0002]

2. Description of the Related Art FIG. 7 is a top view showing an example of a work to be pressed, and FIG. 8 is an enlarged view of a section taken along line XX of FIG. In FIG. 7, reference numeral W is a front fender panel (work) of an automobile that is press-molded by a pressing device. The front fender panel W is shown in FIG.
As shown in FIG.
1 has a wheel arch portion W2 that is cut out in a substantially arc shape, and the flange portion Fb on the front door side has a flat flange portion Fb for preventing interference when the door is opened and closed, as shown in FIG. A so-called inverse bending process, which is bent to the side of the portion W1, is performed, and a pierce hole P for fixing a fitting component (not shown) to the fender with a clip is formed in the flange portion Fh on the wheel arch side. Piercing is applied.

Since the press die for performing the inverse bending process on the front fender panel W needs to remove the front fender panel W from the press die after the inverse bending process, it has a moving mechanism for separating the inverse die from the flange portion Fb. There is.

[0004]

However, since the press die has a large space limitation, it is often difficult to dispose the moving mechanism. In addition, if the moving inverse die also plays the role of a piercing die for performing piercing processing, piercing processing etc. will be started before the workpiece is completely fixed to the inverse die, and It is difficult to guarantee the placement position.

The present invention has been made in view of the above points, and an object thereof is to perform high-precision machining when performing inverse bending and piercing on a work in one pressing step. It is to provide a composite processing press die.

[0006]

According to a first aspect of the present invention, there is provided a combined press die for piercing one flange portion of a workpiece while lowering the upper die with respect to the lower die. In the combined processing press die that applies inverse bending to the flange part of the, the lower die is integrally fixed to the upper part, and the piercing die that holds the work by the lowering movement of the upper die, and the lower die that is slidably provided on the upper die The upper die is moved downward in the piercing direction, and the pierce die cooperates with the piercing die to pierce one flange of the work. The lower die has an inverse die which is moved from the retracted position to the inverse machining position facing the other flange portion of the workpiece by the downward movement of the die. Slidably provided,
And an inverse bending blade that presses the other flange portion of the work against the inverse die by the downward movement of the upper die to perform the inverse bending process.

According to this invention, the work is held by the piercing die which is integrally fixed to the lower die, and one flange portion is pierced and the other flange portion is inversely worked in the holding state. Occasionally, the work can be prevented from being displaced, pierced holes can be formed at accurate positions, and press forming can be performed in an accurate inverse shape.

Further, the combined working press die according to the present invention is characterized in that the inverse bending blade is slidably provided on the upper portion of the lower die instead of the upper die.

The present invention shows another embodiment of the invention described in claim 1 described above. According to this,
Since the inverse bending blade is provided on the lower mold, the structure of the upper mold can be simplified. Therefore, the weight of the upper die can be reduced and the ease of maintenance can be improved.

According to the third aspect of the present invention, the combined working press die is characterized in that the piercing punch has a pad for pressing and holding one flange portion of the work on the piercing die by moving in the piercing working direction.

According to the present invention, one of the flanges of the work is pressed and held by the pierce die by the pad, so that the work can be more reliably prevented from being displaced during processing, and the pierce hole can be formed at a more accurate position. It can be press-formed into a more accurate inverse shape.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view schematically showing this embodiment. The same components as those of the related art are designated by the same reference numerals, and detailed description thereof will be omitted.

Combined processing press die 1 according to the present embodiment
Is attached to a pressing device (not shown), and by driving the pressing device, the flange portion Fh on the wheel arch side is pierced and the flange portion Fb on the front door side is inversely bent in one pressing step. As shown in FIG. 1, the lower mold 10 and the lower mold 10
On the other hand, the upper mold 30 is vertically moved at its upper position.

The lower die 10 has a lower die body 11 fixed to the bolster G, and a work supporting member 12 integrally fixed to the lower die body 11 and a lower die on the upper portion of the lower die body 11. A first cam die 20 supported by the main body 11 so as to be slidably movable is provided.

The work supporting member 12 extends in a lateral direction orthogonal to the sliding direction of the first cam die 20 at a position above the first cam die 20, and has a gate-like shape straddling the first cam die 20. ing. A work placing surface 14 on which the work W is placed is formed on the upper part of the work supporting member 12, and a piercing punch 24, which will be described later, is formed on a vertical wall surface facing the forward slide movement direction of the first cam type. A piercing die 16 is provided for performing the piercing process on the flange portion Fh in cooperation with each other.

The first cam die 20 is supported so as to be capable of reciprocating in the horizontal direction between an advancing position shown on the right side in the drawing and a retracted position shown on the left side in the drawing, and is always in the retracted position. The coil spring 21 biases the coil spring 21 in the backward direction so as to be arranged. A gas spring or a hydraulic / pneumatic cylinder may be used instead of the coil spring 21.

A cam slide surface 22 for moving the first cam die 20 from the retracted position to the advanced position by the first drive cam 35 of the upper die 30 is formed at the rear portion of the first cam die 20. The front part of the 1-cam die 20 is provided with a second drive cam 23 for moving a second cam die 33, which will be described later, from the retracted position to the inverse processing position. The flange portion F is provided on the upper portion of the first cam die 20.
A piercing punch 24 for performing piercing on h and an inverse die 29 for performing inverse bending on the flange portion Fb are provided.

The piercing punch 24 approaches the piercing die 16 by the forward movement of the first cam die 20 (hereinafter,
It is moved toward the piercing direction)
The slider 25, which is moved in the direction away from the piercing die 16 by the backward movement of the first cam die 20, is attached to the tip side in the piercing direction.

In the present embodiment, the slider 25 is reciprocally supported on a slide plate 26 which extends along the piercing direction and has its tip fixed to the work supporting member 12, and a link mechanism 27. Via the first cam type 2
It is linked to 0. Then, a pad 28 for pressing and holding the flange portion Fh is attached to the piercing die 16 at a lateral position of the piercing punch 24 by moving the slider 25 in the piercing direction.

Therefore, the link mechanism 27 is moved by moving the first cam die 20 from the retracted position to the advanced position.
It is possible to move the slider 25 in the piercing direction via the pad, hold the flange portion Fh against the piercing die 16 with the pad 28, and perform the piercing processing on the flange portion Fh in cooperation with the piercing die 16 by the piercing punch 24. it can.

In the present embodiment, the slider 25 is
Slide plate 26 fixed to the work supporting member 12
However, the structure may be such that it is movably supported on the upper surface of the first cam die 20, or that it is moved in a direction different from that of the first cam die 20.

The inverse die 29 is mounted on the work mounting surface 14
When the first cam die 20 is moved to the forward position with the work W placed on it, the work receiving surface 29a that contacts the back surface of the flat surface portion W1 and the flange portion Fb are opposed to and move downward. The so-called overhang-shaped inverse machining receiving surface 29b, which is gradually inclined away from the flange portion Fb. The inverse die 29
In the present embodiment, the structure is formed integrally with the first cam mold 20 and moved in the same direction as the first cam mold 20. However, between the inverse die 29 and the first cam mold 20. A link mechanism or a cam drive mechanism may be provided to move in a direction different from that of the first cam die 20.

The upper die 30 has an upper die body 31 which is disposed above the lower die body 11 so as to be opposed thereto.
A first drive cam 35 for moving the first cam die 20 from the retracted position to the advanced position and an inverse bending blade 32 for performing an inverse bending process on the flange portion Fb are provided in the. The inverse bending blade 32 presses the flange portion Fb against the inverse processing receiving surface 29b of the inverse die 29 by the downward movement of the upper die 30 to perform the inverse bending processing on the flange portion Fb. In the present embodiment, It is attached to the second cam die 33.

The second cam die 33 is slidably supported in a direction of approaching and separating from the inverse die 29 while being suspended from the upper die body 31, and is always supported by a coil spring (not shown). It is urged in a direction away from 29. The lower part of the second cam die 33 is brought into sliding contact with the second drive cam 23 of the first cam die 20 by the lowering movement of the upper die 30, and the second cam die 3
A cam surface 34 is provided to move 3 in a direction approaching the inverse die 29. In the second cam die 33, the inverse bending blade 32 is attached to a position where the flange portion Fb is pressed against the inverse processing receiving surface 29b and the flange portion Fb is subjected to inverse bending processing by moving to the inverse die 29 side.

The positional relationship between the cam surface 34 of the second cam die 33 and the second drive cam 23 of the first cam die 20 is as follows.
After the first cam die 20 is placed at the forward position by the lowering movement of the upper die 30, the inverse bending blade 32 is set at the timing position where the pressing of the flange portion Fb is started. Therefore, when the upper die 30 is moved downward, first, the first cam die 20 is moved forward to move the flange portion Fh.
Is subjected to piercing, then the second cam die 33 is moved, and the flange portion Fb is subjected to inverse bending.

Next, a processing method using the composite processing press die 1 having the above structure will be described below with reference to FIGS. First, as shown in FIG. 2, the upper mold 30 is lifted and placed in the standby position. In the standby position,
The upper die main body 31 is arranged above the lower die main body 11 with a space therebetween, the first cam die 20 is arranged at a retracted position, and the second cam die 33 is arranged at a position separated from the inverse die 29. In the work W, the flange portion Fh faces the piercing die 16 and the flange portion Fb faces the inverse processing receiving surface 29b.
Placed on 4.

When the upper die 30 is moved downward by driving a press device (not shown), the first drive cam 35 of the upper die 30 is moved to the first cam die 20 as shown in FIG.
The first cam die 20 is moved forward from the retracted position to the advanced position by slidingly contacting the cam slide surface 22.

When the first cam die 20 is moved forward, the slider 25 is moved in the piercing direction in accordance with the movement, the pad 28 contacts the flange portion Fh, and the flange portion Fh is attached to the piercing die 16. Press and hold. Then, the piercing punch 28 contacts the flange portion Fh, and the flange portion Fh is pierced by cooperation with the piercing die 16. Before performing the piercing process in this manner, the flange portion Fh is pressed and held by the pad 28 on the piercing die 16,
Since the work W is positioned and fixed, the position of the work W during the piercing process can be guaranteed, and the pierce hole P (see FIG. 8) can be formed at an accurate position.

The inverse die 29 is also the first cam type 2
The work receiving surface 29a is brought into contact with the back surface of the flat surface W1 and the inverse machining receiving surface 29b is arranged at the inverse machining position approaching the flange portion Fb.

When the first cam die 20 is arranged at the forward position, the cam surface 34 of the second cam die 33 comes into contact with and slidably contacts the second drive cam 23 of the first cam die 20, so that the second cam die 33.
Is moved toward the inverse die 29. As a result, the inverse bending blade 32 comes into contact with the flange portion Fb and presses the flange portion Fb against the inverse machining receiving surface 29b as shown in FIG.
Inverse bending is applied to.

That is, the workpiece W is fixed to the lower die main body 11 in a state where the flange portion Fh is pressed and held by the pad 28 on the piercing die 16 and the tip of the piercing punch 24 is fitted in the piercing hole P. The flange portion Fb is subjected to inverse bending while it is positioned and fixed to the workpiece support member 12 that is formed. Therefore, the position of the work W during the inverse bending can be guaranteed, and the flange bending can be performed with high accuracy.

When the upper die 30 is moved down to the lowermost end, it is moved up next. When the upper die main body 31 is lifted above the lower die main body 11 by the upward movement of the upper die 30, the second cam die 33, as shown in FIG. It is gradually moved in a direction away from 29. Therefore, the inverse bending blade 32 pressing the flange portion Fb against the inverse processing receiving surface 29b is separated from the flange portion Fb subjected to the inverse bending processing, and the flange portion Fb.
The pressing contact of b with the inverse processing receiving surface 29b is released.

Then, in accordance with the further upward movement of the upper die 30, the first cam die 20 is moved in the backward direction by the urging force of the coil spring 21. When the first cam die 20 is moved in the backward direction, the slider 25 is moved in the direction away from the piercing die 16 with the movement, and the piercing punch 24 and the pad 28 are respectively in the flange portion Fh.
The work W is positioned and fixed by the piercing punch 24, and the pressing and holding of the work 28 to the piercing die 16 by the pad 28 is released. Then, the inverse die 29 is also moved in the direction away from the flange portion Fb, and is arranged at the retracted position as shown in FIG.

As a result, it becomes possible to lift the processed work W upward from the work placement surface and take it out of the press die. With the above, one cycle of the pressing process using the composite processing press die is completed.

According to the above-described combined working press die, the flange portion Fh is pierced while the workpiece W is positioned and fixed by pressing the flange portion Fh against the piercing die 16 with the pad 28. The position of the work W can be assured and the piercing hole P can be formed at an accurate position.

In addition, the flange portion Fh is sandwiched between the pad 28 and the piercing die 16, and the piercing punch 24 is fitted into the piercing hole P formed in the flange portion Fh. Since this is performed, the position of the work W can be guaranteed during the inverse bending process, and the flange portion Fb can be subjected to the high-precision inverse bending process.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described combined machining press die 1, the case where the second drive cam 23 is provided in the first cam die 20 has been described as an example, but it may be fixedly provided in the lower die body 10. Further, the second cam die 33 is slidably provided on the lower die body 10, and the second drive cam 23 is attached to the upper die body 30.
May be provided.

Further, in the above-described combined machining press die 1, the link mechanism 27 is used to connect the first cam die 20 and the slider 25. However, instead of the link mechanism 27, a drive cam mechanism is provided to The slider 25 may be moved in the piercing direction in accordance with the forward movement of the cam die 20, and may be moved in a direction away from the piercing die by an urging means such as a coil spring.

[0040]

As described above, according to the composite working press die of the present invention, the work is held by the piercing die which is integrally fixed to the lower die, and in this holding state, one flange portion is pierced. Since the other end of the flange is subjected to the inverse process, the work can be prevented from being displaced during the process, and the pierce hole can be formed at the correct position to perform press forming into the correct inverse shape.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a pressing device according to the present embodiment.

FIG. 2 is a diagram illustrating a pressing process.

FIG. 3 is a diagram illustrating a pressing process.

FIG. 4 is a diagram illustrating a pressing process.

FIG. 5 is a diagram illustrating a pressing process.

FIG. 6 is a diagram illustrating a pressing process.

FIG. 7 is a top view showing an example of a work to be pressed.

8 is a diagram showing a cross section taken along the line XX of FIG. 7 from the direction of the arrow.

[Explanation of symbols]

1 Combined processing press type 10 Lower mold 11 Lower mold body 12 Work support member 16 piercing dies 24 Piercing Punch 29 Inverse die 30 Upper mold 31 Upper mold body 32 inverse bending blade W work (front fender panel) Fb Front door flange Fh Wheel arch side flange

Claims (3)

[Claims]
1. A composite working press die in which one flange portion of a work is pierced and the other flange portion is inversely bent by downward movement of the upper die with respect to the lower die, wherein the lower die is the lower die. A pierce die that is integrally fixed to the upper part of the upper die and holds the work by the lowering movement of the upper die, and is slidably provided on the upper portion of the lower die. , A piercing punch for piercing one flange portion of the work in cooperation with the piercing die, and a slidable mount on the upper part of the lower mold, and a downward movement of the upper mold to move the work from the retracted position to the work piece. And an inverse die that is moved to an inverse machining position facing the other flange portion, and the upper die is slidably movable to a lower portion of the upper die. And an inverse bending blade for performing an inverse bending process by pressing the other flange portion of the work against the inverse die by the descending movement of the upper die.
2. The combined processing press die according to claim 1, wherein the inverse bending blade is provided slidably on the upper portion of the lower die instead of the upper die.
3. The composite according to claim 1, wherein the piercing punch has a pad that presses and holds one flange portion of the work against the piercing die by moving in the piercing processing direction. Processing press type.
JP2002035544A 2002-02-13 2002-02-13 Combined processing press mold Expired - Fee Related JP3964221B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002035544A JP3964221B2 (en) 2002-02-13 2002-02-13 Combined processing press mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002035544A JP3964221B2 (en) 2002-02-13 2002-02-13 Combined processing press mold

Publications (2)

Publication Number Publication Date
JP2003230921A true JP2003230921A (en) 2003-08-19
JP3964221B2 JP3964221B2 (en) 2007-08-22

Family

ID=27777710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002035544A Expired - Fee Related JP3964221B2 (en) 2002-02-13 2002-02-13 Combined processing press mold

Country Status (1)

Country Link
JP (1) JP3964221B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513444A (en) * 2011-11-30 2012-06-27 长城汽车股份有限公司 Composite flanging mechanism of stamping die
CN102688943A (en) * 2012-06-14 2012-09-26 北泰汽车底盘系统(安徽)有限公司 Workpiece bending device for heavy lock progressive die
CN103861952A (en) * 2014-04-02 2014-06-18 昆山达亚汽车零部件有限公司 Upper die structure
CN104827513A (en) * 2015-05-12 2015-08-12 苏州万隆汽车零部件股份有限公司 Punching process of bumper reversing sensor hole
CN106111810A (en) * 2016-07-26 2016-11-16 安徽江淮汽车股份有限公司 There is the compound flanging die of rollover function
CN108480475A (en) * 2018-03-09 2018-09-04 安徽江淮汽车集团股份有限公司 A kind of uncoiling blanking mold and blanking process
CN109175096A (en) * 2018-11-09 2019-01-11 重庆秋叶机械制造有限公司 Left front girder inner panel extruding tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128408B (en) * 2014-07-18 2017-03-29 长城汽车股份有限公司 Hemmer
CN105537376B (en) * 2015-12-31 2017-06-30 上海永太汽车零部件厂 Fender bracket hole punched device
KR102051626B1 (en) * 2018-11-01 2019-12-02 (주)로얄이지 Forming apparatus for reducing springback

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513444A (en) * 2011-11-30 2012-06-27 长城汽车股份有限公司 Composite flanging mechanism of stamping die
CN102688943A (en) * 2012-06-14 2012-09-26 北泰汽车底盘系统(安徽)有限公司 Workpiece bending device for heavy lock progressive die
CN103861952A (en) * 2014-04-02 2014-06-18 昆山达亚汽车零部件有限公司 Upper die structure
CN104827513A (en) * 2015-05-12 2015-08-12 苏州万隆汽车零部件股份有限公司 Punching process of bumper reversing sensor hole
CN106111810A (en) * 2016-07-26 2016-11-16 安徽江淮汽车股份有限公司 There is the compound flanging die of rollover function
CN108480475A (en) * 2018-03-09 2018-09-04 安徽江淮汽车集团股份有限公司 A kind of uncoiling blanking mold and blanking process
CN109175096A (en) * 2018-11-09 2019-01-11 重庆秋叶机械制造有限公司 Left front girder inner panel extruding tool

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