JPS62199231A - Metal die device - Google Patents

Abstract

PURPOSE:To perform a bending and recessed part drawing in one stage by arranging the bending punch and swinging punch performing a bending and drawing with the co-work with a die as well as by providing the die having the parts for drawing and bending. CONSTITUTION:The die part 17 for bending and that 18 for drawing are provided at the side part of a die 6 and the bend punch 7 performing a bending with the co-work with a die 6 and the swing punch 11 performing the drawing of the recessed part are respectively arranged as well. The drawing of the recessed part and bending of the side plate part 2 are performed in order with the work W being pinched between a supporting face 16 and press pad 9 by approaching the bend punch 7 to the side plate part 2 of the work W, when an ascending and descending body 8 is descended by placing the work W on a placing face 13 and supporting face 16. Since the die parts 17, 18 for bending and drawing are equipped in the same machine the bending and recessed part drawing can be performed in one stage via the descent of a vertically moving body 8.

Description

Detailed Description of the Invention A0 Object of the Invention fil Industrial Field of Application The present invention is directed to a workpiece having an upper plate portion and a side plate portion bent downward from the edge of the upper plate portion. The present invention relates to a mold device for performing a drawing process to form a recessed part in the side plate part and a bending process to form an inwardly bent part at the lower end of the side plate part.

(2) Prior Art Conventionally, when drawing and bending the work, it is common to first bend the lower end of the side plate of the work, and then draw the side plate.

(3) Problems to be Solved by the Invention According to the above-mentioned conventional technology, the bending process and the drawing process had to be carried out in two stages, and two types of molds were also required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mold device that can mold a recessed portion and a bent portion in one step.

B0 Structure of the Invention (1) Means for Solving Problems The mold device of the present invention has a support surface on the upper surface on which a portion near the edge of the upper plate of the workpiece is placed, and also has a recessed portion and a bent portion. It has a drawing die part and a bending die part for forming, and is supported on a fixed base so that the recessed part and the bent part can move toward and away from the inner surface of the side plate part of the workpiece on the support surface. A bend which is disposed outside the side plate of the workpiece on the support surface so as to be able to move toward and away from the side plate, and works with the bending die to bend the lower end of the side plate. a punch; an elevating body that can be raised and lowered above the workpiece on the support surface; supported by the elevating body so as to be vertically movable relative to each other, and elastically biased downward; a pressing pad that presses the side plate portion; a swing pad that is swingable and supported by the pressing pad so as to cooperate with the die to pinch the side plate portion;
A swing punch supported by a swingable press hashod to form a concave part in cooperation with the drawing die part; as the elevating body descends, the die moves close to the side plate part, and the side plate of the swing pad a drive cam mechanism for sequentially rotating the swing punch close to the side plate, rotating the swing punch close to the side plate, and moving the bend die close to the side plate.

(2) When the workpiece is placed on the supporting surface of the die and the elevating body is lowered,
First, the die and its drawing die part and bending die part are moved to a fixed position in the direction of approaching the side plate part, and then the workpiece is pressed against the support surface by the press pad, and then the swing pad is rotated and the side plate of the workpiece is pressed against the support surface. The part is held between the die and the swing pad, and after the swing punch rotates, the drawing die part and the swing punch form four parts, and then the bend punch moves and the bending die part and the bend punch form four parts. A bend is formed.

(3) Example Hereinafter, an example of the present invention will be explained with reference to the drawings. First, in FIGS. 1, 2, and 3, a work W
is formed by processing and forming a thin steel plate in advance, and has an upper plate part 1 and a side plate part 2 bent downward from the edge of the upper plate part 1. The side plate portion 2 of this workpiece W is subjected to drawing and bending by the mold apparatus of the present invention. That is, a recess 3 is formed in the side plate 2 of the workpiece W by drawing, and a bent part 4 is formed at the lower end of the side plate 2 by bending.

This mold device consists of a fixed base 5'' and a slidable die 6.
, a bend punch 7 for performing bending in cooperation with the die 6, and an elevating body 8 that is driven up and down by a drive means (not shown) above the workpiece W placed on the die 6, and moves vertically relative to each other. Press pad 9 freely supported by elevating body 8
, a swing pad 10 swingably supported by the pressure pad 9 , a swing punch 11 swingably supported by the pressure pad 9 around the same axis as the swing band 10 , a die 6 , a bend punch 7 , swing band 1
0 and a drive cam mechanism 12 for driving the swing punch 11.

On the base 5, a mounting table 14 having a storage surface 13 on the upper surface for placing a portion of the workpiece W separated from the side plate section 2 of the upper plate section 1 is erected.

Further, a movable plate 15 is slidably disposed on the base 5 so as to be able to approach and move away from the mounting table 14, and a die extending upward is provided at the end of the movable plate 15 on the side of the mounting table 14. 6 is integrally provided.

A support surface 16 is provided on the upper surface of the die 6 on which the upper plate portion 1 is placed and supported near the edge of the workpiece W. die 6
On the side opposite to the mounting table 14, there is a bending die portion 17 for forming the bent portion 4 in cooperation with the bend punch 7.
and a drawing die portion 18 for forming the recess 3 in cooperation with the swing punch 11. Moreover, when the workpiece W is placed at a fixed position on the placement surface 13 and the support surface 16 with the die 6 in contact with the placement table 14, the side plate portion 2 of the workpiece W and the bending die portion 17 and The dimensions along the sliding direction of the die 6 (the left-right direction in FIG. 1) are determined so that there is a gap between the drawing die portion 18 and the drawing die portion 18.

A protrusion 19 is protruded from the end of the base 5, and a spring 20 is compressed between the protrusion 19 and the movable plate 15. As a result, the movable plate 15, that is, the die 6, is resiliently biased in a direction closer to the mounting table 14.

The bend punch 7 is disposed on the movable plate 15 outside the side plate portion 2 of the workpiece W placed on the support surface 16 so as to be movable relative to the moving plate 15 in the sliding direction. Moreover, a spring 21 is compressed between the bend punch 7 and the die 6, and the bend punch 7 and the die 6 are elastically biased in a direction away from each other. Further, a stopper 22 for restricting the movement of the bend punch 7 by the spring 21 is provided protrudingly on the movable plate 15 .

The press pad 9 positions the workpiece W by sandwiching the edge portion of the upper plate portion 1 between the press pad 9 and the support surface 16 of the die 6. 47, it is resiliently biased downward.

Referring also to FIG. 4, the pressing pad 9 includes a swing pad 10 that works together with the die 6 to pinch the side plate part 2 of the workpiece W, and a recess that works together with the drawing die part 18. A swing punch 11 for forming the die 6 and the bend punch 7 is swingably supported by a support shaft 23 perpendicular to the moving direction of the die 6 and the bend punch 7.

That is, the base ends of a pair of swing arms 24 are pivotally supported on the support shaft 23 at intervals in the axial direction, and the swing punch 11 is commonly provided at the tips of these swing arms 24. Further, the base end of a swing arm 25 is pivotally supported on a support shaft 23 between both swing arms 24.
A swing pad 10 is provided at the tip. Moreover, the swing arm 25 has a protrusion 26 located between both swing arms 24.
is installed protrudingly. Each swing arm 24, 25 is biased counterclockwise in FIG. 1 by a spring (not shown).

The drive cam mechanism 12 includes a first pressure receiving surface 27 provided on the moving plate 15 integrated with the die 6, a second pressure receiving surface 28 provided on the bend punch 7, and a third pressure receiving surface 29 provided on the swing band 10. The fourth hole provided in the swing punch 11
Pressure receiving surface 30 and first, second, third and fourth pressure receiving surfaces 27
, 28, 29° 30, respectively.
゜33.34.

A support protrusion 35 is provided on the movable plate 15 at the end opposite to the die 6 so as to protrude upward, and a pressure receiving member 36 fixed to the bend punch 7 side of the support protrusion 35 is provided with a first support protrusion 35 . A pressure receiving surface 27 is provided. Moreover, the first pressure receiving surface 27 is formed to be inclined so as to approach the pend bunch 7 as it goes downward.

The second pressure receiving surface 28 has a bend punch 7 on the opposite side from the die 6.
It is provided in the first pressure receiving surface 28 and is formed to be inclined downward as it goes toward the first pressure receiving surface 28 side.

The third pressure receiving surface 29 includes a protrusion 2 that is integral with the swing pad 10.
The pressure receiving member 37 is fixed to the tip of the pressure receiving member 6. That is, the third pressure receiving surface 29 is provided on the opposite side of the swing pad 10 of the pressure receiving member 37, and is formed to be inclined outward as it goes downward.

The fourth pressure receiving surface 30 is provided on a pair of pressure receiving members 38 fixed to the swing punch 11, respectively.

That is, each pressure receiving member 38 is fixed to the swing punch 11 at a position corresponding to the tip of the swing arm 24, and is inclined outward as it goes downward on the opposite side from the swing punch 11. A fourth pressure receiving surface 30 is formed on each pressure receiving member 38 .

Referring also to FIG. 5, a cam block 39 is fixed to the lower end of the elevating body 8 on the outer side of the swing band 10 and the swing punch 11. A correspondingly inclined second pressure surface 32 is provided. Further, a pressing member 40 is fixed to the outer lower part of the cam block 39, and a first
A first pressing surface 31 that is inclined in correspondence with the pressure receiving surface 27 is formed.

Between the cam block 39 and the elevating body 8, there is a movable piece 41 that is allowed to move toward and away from the pressure receiving member 37 within a regulated range, and a movable piece 41 that is allowed to move toward and away from the pressure receiving member 38 within a regulated range. The movable pieces 42 are supported, and each movable piece 41.42 approaches the pressure receiving member 37.38 by an elastic body 43.44 interposed between the elevating body 8 and the cam block 39. biased in the direction.

A pressing member 45 having a third pressing surface 33 inclined in correspondence with the third pressure receiving surface 29 is fixed to the tip of the moving piece 41 .

Further, a pair of pressing members 46 each having a fourth pressing surface 34 inclined corresponding to the fourth pressure receiving surface 30 is fixed to the tip of the moving piece 42 .

When the elevating body 8 is ascending, the third pressure surface 33 is in contact with the third pressure receiving surface 29, and the fourth pressure surface 34 is in contact with the third pressure receiving surface 34.
A pressing surface 34 is in contact with it.

When the elevating body 8 descends, the first pressing surface 31 touches the first pressure receiving surface 2.
7, and the second pressing surface 32 contacts the second pressure receiving surface 2.
8, the moving plate 15, that is, the die 6 slides on the base 5 against the spring force of the spring 20, and the pend bunch 7 slides on the moving plate 15 against the spring force of the spring 21. is set so that sliding of the die 6 to a predetermined position is performed prior to sliding of the pend bunch 7 to a bending position.

Further, as the elevating body 8 descends, the third pressing surface 33 presses the third pressure receiving surface 29 while compressing the elastic body 43 to swing the swing pad 10, and the fourth pressing surface 34 is driven by the elastic body 43. 4
The swing punch 11 is driven to swing by pressing the fourth pressure receiving surface 30 while compressing the die 6. However, after the die 6 has slid to a predetermined position, the bend punch 7 is first slid to the bending position. First, the swing pad 10 is set to swing to a position where the side plate portion 2 of the workpiece W is pressed between it and the die 6, and then the swing punch 11 is set to swing to a drawing position.

Next, the action of this embodiment will be explained with reference to FIG. The spring force of the punch 7 spring 21 causes the stopper 2 to
It is separated from the die 6 until it comes into contact with the die 6. Further, the swing pad 10 and the swing punch 11 are in an upwardly rotated position as shown in FIG.

In this state, the workpiece W is placed on the mounting surface 13 and the support surface 16.
The side plate portion 2 of the work W is placed between the die 6 and the bend punch 7, and the elevating body 8 is lowered.

According to the descent of the elevating body 8, the first and second pressing surfaces 31,
32 comes into contact with the first and second pressure receiving surfaces 27 and 28, the movable plate 15 and the die 6 approach the side plate portion 2 of the workpiece W from the inside against the spring force of the spring 20, and the bend punch 7 The side plate portion 2 of the workpiece W resists the spring force of the spring 21.
However, the die 6 first moves to a predetermined position where it contacts the side plate portion 2, and the bend punch 7 moves slowly.

When the elevating body 8 further descends, the press pad 9 presses the workpiece W.
The workpiece W is pressed between the support surface 16 and the pressing pad 9, and the workpiece W is positioned. Moreover, even though the elevating body 8 is lowered, the pressure pad 9 is prevented from descending, so that the third and fourth pressure receiving surfaces 29, 30 are pressed against the third and fourth pressure receiving surfaces 29 and 30 in response to the lowering of the elevating body 8. Surface 33,
34, the swing pad 10 and swing punch 11 start swinging toward the side plate 2, and first the swing pad 10 contacts the side plate 2, and the side plate 2 is moved between the die 6 and the swing pad 10. Being pinched. Next, the swing pad 11 cooperates with the drawing die portion 18 of the die 6 to draw the side plate 2, and the recess 3 is formed in the side plate 2.

Thereafter, as the elevating body 8 further descends, the bend punch 7 cooperates with the bending die part 17 of the die 6 to perform the bending process, and the bent part 4 is formed at the lower end of the side plate part 2.

In this way, the drawing process and bending process of the work W are performed.
This is performed in one step, in which the elevating body 8 is lowered once. Moreover, since the drawing process is performed using the swing punch 11 and the drawing die part 17 before the bending process, the side plate part 2 is connected to the die 6, the swing pad 10, and the swing punch 11.
The bending process of the side plate part 2 is performed in a state where it is held between the two, and the formability of the bending process is improved.

C9 Effects of the Invention As described above, the device of the present invention has a support surface on the upper surface on which a portion near the edge of the upper plate of the workpiece is placed, and a drawing die portion for forming the four parts and the bent part; A die having a bending die portion and supported on a fixed base so that the recessed portion and the bent portion can move toward and away from the inner surface of the side plate portion of the workpiece on the support surface; a bend punch, which is disposed outside the side plate so as to be able to move toward and away from the side plate, and works with the bending die to bend the lower end of the side plate; an elevating body that can be raised and lowered upward; a pressing pad that is supported by the elevating body so as to be vertically movable relative to each other and is elastically biased downward, and works with the support surface to pinch the upper plate portion; a swing pad that is swingable in cooperation with the die to pinch the side plate portion and supported by the pressure pad; a swing pad that is swingable in cooperation with the drawing die portion of the die to form a recessed portion; A swing punch supported by a pad; as the elevating body descends, the die is rotated close to the side plate, the swing band is rotated close to the side plate, the swing punch is rotated close to the side plate, and the bend die is rotated close to the side plate. and a drive cam mechanism that sequentially rotates the side plate toward the side plate.
It is now possible to perform drawing and bending on a workpiece in a single step of lowering the elevating body once. Moreover, since the bending process is performed using the bend die while the side plate portion of the workpiece is held down by the swing punch, the formability of the bending process is improved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical cross-sectional side view showing the state before machining starts, FIG. 2 is an enlarged vertical cross-sectional view of the workpiece after machining, and FIG. Figure 2 corresponds to the ■ arrow view in Figure 2, Figure 4 corresponds to the ■ arrow view in Figure 1, Figure 5 corresponds to the ■ arrow view in Figure 1, and Figure 6 corresponds to Figure 1 showing the state after processing is completed. FIG. ■...Top plate part, 2...Side plate part, 3...Concave part, 4...
...Bending portion, 5...Base, 6...Die, 7...Pend bunch, 8...Elevating body, 9...Press pad, 1
0...Swing pad, 11...Swing punch,
12... Drive cam mechanism, 16... Support surface, 17...
・Bending die part, 18...Drawing die part W...Work Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Procedure amendment export)

Claims (1)

[Claims] A workpiece having an upper plate part and a side plate part bent downward from the edge of the upper plate part is subjected to a drawing process to form an inwardly recessed part in the side plate part, and a side plate part bent inwardly. A mold device for forming a bent part at the lower end of the side plate part has a support surface on the upper surface on which a part near the edge of the upper plate part of the work is placed, and a support surface for placing a part near the edge of the upper plate part of the workpiece. It has a drawing die part and a bending die part for forming a curved part, and is mounted on a fixed base so that the recessed part and the bent part can be moved toward and away from the inner surface of the side plate part of the workpiece on the support surface. A die to be supported; disposed outside the side plate of the workpiece on the support surface so as to be able to move toward and away from the side plate, and working together with the bending die part to bend the lower end of the side plate. a bend punch for the purpose; an elevating body that can be raised and lowered above the workpiece on the support surface; supported by the elevating body so as to be vertically movable relative to each other; and resiliently biased downward;
a pressing pad that cooperates with the support surface to press the upper plate portion;
a swing pad supported by a pressing pad, which is swingable in cooperation with the die to pinch the side plate portion; and swingable in cooperation with a drawing die portion of the die to form a concave portion; A swing punch supported by a pressure pad; as the elevating body descends, the die moves close to the side plate, the swing pad rotates close to the side plate, the swing punch rotates close to the side plate, and the bend die a drive cam mechanism for sequentially moving the mold closer to the side plate portion; and a mold device.