JPH03180221A - Drawing device for sheet - Google Patents

Abstract

PURPOSE:To form a sheet with the most suitable blank holder by clamping the periphery part of an area to be formed of the sheet, providing a pressurizing punch on one surface of the area to be formed, making the area facing the other surface as an open area and pressurizing a punch on the clamped sheet. CONSTITUTION:Since a tension and/or a blank holder force are/is given to the periphery part of the sheet 1, the sheet is not clamped by the upper and lower dies and punch 14 equivalent to one of the conventional upper or lower die is pressurized to one surface of the area to be formed. The area facing the other surface of the area to be formed of the sheet 1 is an open area. Therefore, the shape of a product in the forming process can be observed visually and the forming condition can be adjusted. Since height is reduced, an installing space is reduced. Since the sheet need not be clamped between upper and lower dies, safety is high. Generation of a fold can be prevented considerably by a relatively small tension. In this way, the blank holder force is reduced and drawing can be executed by a blank holder most suitable for the shape of a product.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for drawing and forming thin plates of metal, synthetic resin, etc.

[Prior Art] Conventionally, body or roof frames for vehicles, ships, aircraft, etc., panels for home appliances, etc. are drawn between upper and lower dies of a press machine to give them the desired shape. There is.

[Problems to be Solved by the Invention] However, drawing forming performed using a conventional press device has the following problems (1) to (3).

■Since thin plates are formed by being sandwiched between upper and lower dies, the shape of the product cannot be visually observed during the forming process, and the forming conditions cannot be effectively adjusted during the forming process.

■Since the press device is equipped with an upper and lower mold, the height dimension is large and the installation space is large.

■Mold cost is high because upper and lower molds are required.

■Since a thin plate is sandwiched between the upper and lower molds, special precautions must be taken regarding safety.

(2) The wrinkle pressing force applied to the peripheral edge of the thin plate is the same for each part of the peripheral edge, making it impossible to perform wrinkle pressing that is optimal for the shape of the product.

■Since the thin plate is formed by sandwiching it between upper and lower molds, it is difficult to perform vibration forming, trim forming, piercing forming, etc. on the thin plate at the same time as drawing forming.

■The wrinkle pressing force applied to the peripheral edge of the thin plate is to hold the peripheral edge of the thin plate by the frictional force between the wrinkle pressing plate and the thin plate, and the loss is large, so in order to prevent certain wrinkles, it is necessary to Presser foot force is required.

An object of the present invention is to draw-form a thin plate without sandwiching it between upper and lower dies and while reducing the wrinkle pressing force.

Another object of the present invention is to provide optimal wrinkle control to the shape of the product when drawing and forming a thin plate.

Another object of the present invention is to draw and form a thin plate and perform sub-processing at the same time.

Another object of the present invention is to reduce the wrinkle pressing force when forming a thin plate using upper and lower molds.

[Means for Solving the Problems] The present invention according to claim 1 includes a clamper capable of clamping the peripheral edge of a region to be formed of a thin plate and applying tension force and/or wrinkle suppressing force to the peripheral edge. , comprising a punch that presses against one surface of the region to be formed of the thin plate, an area facing the other surface of the region to be formed of the thin plate is an open area, and the punch is pressed against the thin plate clamped by the clamper. Accordingly, the thin plate is subjected to drawing forming.

The present invention according to claim 2 is the present invention according to claim 1, further comprising a configuration in which the clamper can adjust the tension force and/or the wrinkle pressing force on the peripheral edge of the thin plate for each portion of the peripheral edge. It is what was done.

The present invention according to claim 3 is the present invention according to claim 1 or 2, further comprising disposing a roughening tool for the thin plate in the open area.

The present invention as set forth in claim 4 provides a drawing forming apparatus for a thin plate comprising upper and lower dies that clamp the peripheral edge of a region to be formed of the thin plate and press against upper and lower surfaces of the region to be formed of the thin plate. It is equipped with a clamper that can apply tension to the peripheral edge, and by press-contacting the upper and lower dies to the thin plate clamped by the clamper, the thin plate is drawn.

According to a fifth aspect of the present invention, in the present invention according to the fourth aspect, the clamper is configured to be able to adjust the tension force applied to the peripheral edge of the thin plate for each portion of the peripheral edge.

[Function] According to the present invention as set forth in claim 1, the thin plate can be applied with tension force and/or wrinkle suppressing force to the peripheral edge thereof, so that it can be attached to the conventional upper mold or lower mold without being pinched between the upper and lower molds. A punch corresponding to one side of the area to be formed is pressed against one surface of the area to be formed, whereby drawing forming is performed. The area facing the other surface of the forming area of the thin plate is an open area.

Therefore, there are the following effects.

■Since the area facing the other side of the forming area of the thin plate is an open area, the shape of the product during the forming process can be visually observed, and the forming conditions can be effectively adjusted during the forming process ■The other side of the forming area of the thin plate Since the area facing the surface is also an open area, the height dimension is small and the installation space is small.

■Mold cost is low because upper and lower molds are not required.

■The area facing the other side of the forming area of the thin plate is an open area, and there is no action to sandwich the thin plate between the upper and lower dies, so safety is high.

■When forming a thin plate with a punch, the tension force that holds the peripheral edge of the thin plate is the one that directly pulls and holds the thin plate with a clamper, and a certain degree of wrinkle prevention can be achieved with a relatively small tension force. Therefore, the wrinkle pressing force that should be applied to the peripheral edge of the thin plate by the tension clamper and/or the wrinkle pressing clamper can be reduced.

According to the present invention as set forth in claim 2, there is the following effect (2).

■The tension force and/or wrinkle suppressing force applied to the peripheral edge of the thin plate can be adjusted for each part of the peripheral edge, and the tension force and/or By changing the wrinkle holding force, it is possible to perform tension forming and/or wrinkle holding forming that is optimal for the shape of the product.

According to the present invention as set forth in claim 3, there is the following effect (2).

■Since the sub-processing tool can be placed in the open area, it is possible to perform vibration forming, trim forming, piercing forming, etc. on the thin plate at the same time as drawing forming the thin plate.

According to the present invention as set forth in claim 4, there is the following effect (2).

■When forming a thin plate using upper and lower molds, the tension force that holds the peripheral edge of the thin plate is created by directly pulling and holding the thin plate using a clamper, and a certain level of wrinkle prevention can be achieved with a relatively small tension. Therefore, the wrinkle pressing force that should be applied to the peripheral edge of the thin plate by the tension clamper and/or the wrinkle pressing clamper can be reduced.

According to the present invention as set forth in claim 5, there is the following effect (2).

■The tension force applied to the periphery of the thin plate can be adjusted for each part of the periphery, and the tension force can be changed on the long and short sides of the product, or on the straight part and part of the corner, etc. Tension molding can be performed to best suit the shape.

[Example Fig. 1 is a schematic diagram showing a drawing device according to a first embodiment of the present invention, FIG. 2 is a schematic diagram showing a drawing device according to a second embodiment of the present invention, and FIG. FIG. 4 is a schematic diagram showing an example of a direct-acting tension clamper; FIG. 5 is a schematic diagram showing an example of a wedge-type tension clamper; FIG. 6 is a schematic diagram showing an example of a wedge-type tension clamper. The figure is a schematic diagram showing an example of a lever-type tension clamper, Figure 7 is a schematic diagram showing an example of a lever-type wrinkle presser clamper, Figure 8 is a schematic diagram showing an integrated wrinkle presser plate, and Figure 9 is a split type. Figure 10 is a schematic diagram showing partial restraint forming, Figure 11 is a schematic diagram showing partial strike forming, Figure 12 is a schematic diagram showing vibration forming, and Figure 13 is a schematic diagram showing trimming. , pierce, and flange forming, FIG. 14 is a schematic diagram showing bulge forming, and FIG. 15 is a schematic diagram showing a drawing device according to a fourth embodiment of the present invention.

(First Embodiment) As shown in FIGS. 1(A) and 1(B), the drawing device 10 has six tensioners on each of the two long sides of the rectangular frame-shaped bed portion 11A of the frame 11. In addition to the clampers 12, four tension clampers 12 are provided on each of the two short sides, and one wrinkle presser damper 13 is provided on each of the four corners.

Further, a punch 14 is arranged in the central region of the bed portion 11A. Then, in a portion corresponding to the center of each short side of the bed portion 11A in the column portion 11B of the frame 11,
A wrinkle presser root pulling cylinder 15 is provided.

Each tension clamper 12 includes a clamping part 12A that clamps the peripheral edge of the forming area of the thin plate 1, and a cylinder 12B that can move the clamping part 12A in a direction toward and away from the thin plate 1. has been done.

Thereby, each tension clamper 12 can clamp the peripheral edge of the region to be formed of the thin plate 1 and apply tension force F1 to the peripheral edge.

At this time, each tension clamper 12 is operated independently from each other in order to adjust the tension forces A1, B1, C1, . . . Jl on the peripheral edge of the thin plate 1 for each peripheral edge.

Each wrinkle presser clamper 13 has a frame-shaped upper wrinkle presser plate 1 suspended and supported by the above-mentioned lifting cylinder 15 with respect to a frame-shaped lower wrinkle presser plate 16 fixed to the upper surface of the bed portion 11A.
7 is pressed down at a part of its corner, and a wrinkle pressing force F2 can be applied to the peripheral edge of the thin plate 1 sandwiched between the upper and lower wrinkle pressing plates 16,17. Each wrinkle presser clamper 13 includes a swing lever 13A that presses down the upper wrinkle presser plate 17, and a wrinkle press cylinder 13B that drives the swing lever 13A.

At this time, each wrinkle presser clamper 13 is operated independently from each other so as to adjust the wrinkle presser force F2-A, . . . F2-D on the peripheral edge of the thin plate 1 for each peripheral edge.

The punch 14 applies a punching force F below the area to be formed of the thin plate 1.
3, and the thin plate 1 clamped by each tension clamper 12 and each wrinkle presser clamper 13 is subjected to drawing forming. The drawing device 10 has an open area 18 that faces the upper surface of the forming area of the thin plate 1.

In addition, the tension clamper 12 specifically has the following (1)
) to (3), etc.

(1) In the direct-acting clamper shown in FIG. 4, the clamping part 12A, which is moved by the cylinder 12B, is
1 and a clamping cylinder 1 mounted on the movable block 101
02, a fixed claw 103 fixed to the movable block 101,
The movable claw 104 is driven by a clamping cylinder 102.

(2) In the wedge-type clamper shown in FIG. 5, the clamping part 12A, which is moved by the cylinder 12B, is
1 and a clamping cylinder 1 mounted on the movable block 111
12, a fixed claw 113 fixed to the movable block 111,
a wedge 114 driven by a clamping cylinder 112;
It is composed of a movable claw 115 that is pushed down by a wedge 114.

(3) In the lever-type clamper shown in FIG. 6, the clamping part 12A moved by the cylinder 12B is
1 and a clamping cylinder 1 mounted on the movable block 121
22, a fixed claw 123 fixed to the movable block 121,
A swinging lever 124 driven by a clamping cylinder 122
and the movable claw 1 that is pushed down by the swing lever 124.
It is composed of 25.

The tension force F1 in (1) to (3) above may be obtained not only by pneumatic pressure or hydraulic pressure, but also by an electric motor, electromagnetic force, or the like.

Further, the wrinkle presser clamper 13 may be constructed as shown in FIG. 7. Wrinkle clamper 1 in Fig. 7
3 includes a cylinder 131, a movable block 132 moved by the cylinder 131, a swinging lever 133 provided on the movable block 132, and a wrinkle presser cylinder 134 mounted on the movable block 132 and driving the swinging lever 133. The upper wrinkle pressing plate 17 is pushed down by a swing lever 133. According to the wrinkle pressing clamper 13 shown in FIG. 7, it is possible to apply a strong wrinkle pressing force F2 to the inner side of the peripheral edge of the thin plate 1;
In FIG. 7, by setting L 1 >L2, the wrinkle pressing force F2 is greater than the pressing force F1 of the cylinder 134.
can be obtained.

(Second Embodiment) As shown in FIGS. 2(A) and 2(B), the drawing device 20 has two long sides of the bed portion 11A of the frame 11 which are substantially similar to those in the drawing device 10. Four wrinkle presser clampers 13 are provided, and three wrinkle presser dampers 13 are provided on each of the two short sides. Further, a punch 14 is arranged in the central region of the bed portion 11A.

Each wrinkle presser clamper 13 has the structure shown in FIG.
Pressure is applied to the peripheral edge of the area to be formed. And cylinder 1
By operating the cylinder 31, a tension force F1 can be applied to the peripheral edge, and by operating the cylinder 134, a wrinkle pressing force F2 can be applied to the peripheral edge.

At this time, the cylinder 131 of each wrinkle presser clamper 13 is
Tension forces A, B,...G on the peripheral edge of the thin plate 1
are operated independently of each other to adjust rA for each portion of the peripheral edge. Further, the cylinder 134 of each wrinkle clamper 13 applies wrinkle pressing forces a and b to the peripheral edge of the thin plate 1.
... are operated independently from each other in order to adjust g for each portion of the peripheral portion.

The punch 14 applies a punch force F to the lower surface of the region to be formed of the thin plate 1.
3, and the thin plate 1 clamped by the wrinkle clampers 13 is subjected to drawing forming. The drawing device 20 has an open area 18 that faces the upper surface of the forming area of the thin plate 1 .

(Third Embodiment) As shown in FIGS. 3(A) and 3(B), the drawing device 30 is provided with a draw-forming device 30, which is provided with a draw-forming device 30, which is provided on each of the four sides of the bed portion 11A of the frame 11, which is substantially the same as that in the draw-forming W10. Three wrinkle presser dampers 13 are provided, and one wrinkle presser damper 13 is provided at each of the four corners. Further, a punch 14 is arranged at the center of the bed portion 11A. A wrinkle presser root pulling cylinder 15 is provided at a portion of the column portion 11B of the frame 11 corresponding to the center of opposing sides of the bed portion 11A.

Each wrinkle presser clamper 13 has the same configuration as in the first embodiment, and includes a lower wrinkle presser plate 16 and an upper wrinkle presser plate 17.
During this time, the peripheral edge of the region to be formed of the thin plate 1 is pressed. Then, by operating the wrinkle presser cylinder 13B, a wrinkle presser force F1 can be applied to the peripheral edge portion.

At this time, the cylinder 13B of each wrinkle presser clamper 13 is
The pressing forces A, B, . . . P applied to the peripheral edge of the thin plate 1 are operated independently of each other in order to adjust each portion of the peripheral edge.

The punch 14 applies a punch force F to the lower surface of the region to be formed of the thin plate 1.
2, and the thin plate 1 clamped by the wrinkle clampers 13 is subjected to drawing forming.The drawing device 30 defines an open area 18 as an area facing the upper surface of the area to be formed of the thin plate 1. .

(Format of Wrinkle Pressing Plate) The wrinkle pressing plates 16 and 17 shown in FIGS. 8(A) and 8(B) are integrated as a whole along the peripheral edge of the thin plate 1. At this time, the lower wrinkle pressing plate 16 is fixed to the bed portion 11A, and the upper wrinkle pressing plate 17 is connected to a wrinkle pressing clamper 13 having the same structure as the first embodiment shown in FIG. 1 and the third embodiment shown in FIG. At the same time, when taking out the product, the lifting cylinder 1
5, it is raised as a whole.

The wrinkle pressing plates 16 and 17 shown in FIGS. 9(A) and 9(B) are obtained by dividing the entire thin plate 1 along the peripheral edge thereof into a plurality of pieces. At this time, each wrinkle presser plate 16, 17 is a wrinkle presser clamper 1 having a structure similar to the tension clamper 12 in FIG.
Built into 3. That is, the wrinkle presser clamper 13 includes a cylinder 141, a movable block 142 moved by the cylinder 141, a wrinkle presser cylinder 143 mounted on the movable block 142, and a swing lever 144 driven by the cylinder 143. , a lower wrinkle presser plate 16 is fixed to a movable block 142, and an upper wrinkle presser plate 17 is provided on a swing lever 144. Then, by driving the wrinkle presser cylinder 143, the upper wrinkle presser plate 17 is lowered and rolled down toward the wrinkle presser plate 16, and as shown in step 6, when taking out the product,
The wrinkle pressing plates 16 and 7 are retracted by the cylinder 141.

(Sub-processing tool) Open area 1 of each proof forming device 10.20.30
Sub-processing tools 8 are arranged as shown in (1) to (5) below.

(1) Partial constraint molding (see FIGS. 10(A) and (B)).

A partial restraint forming tool 151 provided in the open area 18 restrains a part of the back surface of the thin plate 1 to be drawn by the punch 14. 151A is urethane or the like.

(2) Partial restriking molding (see Figure 11).

A local die 152 provided in the open area 18 partially restrikes the back surface of the thin plate l to be drawn with the punch 14.

(3) Vibration molding (see Figure 12).

Vibration molding tool 15 provided in open area 18
3 is controlled by a robot, vibration forming is performed on the back surface of the thin plate 1 to be drawn by the punch 14.

(4) Trim, piercing, and flange forming (see Figure 13).

A trim forming tool 154 and a piercing/flange forming tool 155 provided in the open area 18 trim the peripheral edge of the thin plate 1 drawn by the punch 14, and at the same time, the thin plate 1 is
Pierce/flange molding is applied to the center of the.

(5) Bulge forming (see Figure 14).

By providing the fluid pressure passage 156 in the punch 14 and arranging the split die 157 in the open area 18, the punch 14
The thin plate 1 drawn in is subjected to bulge forming.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the thin plate 1 can be applied with tension force and/or wrinkle pressing force on its peripheral edge, so that the thin plate 1 is not pinched between the upper and lower dies, and can be punched using the punch 14, which corresponds to either the conventional upper die or the lower die. is pressed against one surface of the region to be formed, thereby performing drawing forming. The area facing the other surface of the forming area of the thin plate 1 is an open area 18.

Therefore, there are the following effects.

■Since the area facing the other side of the forming area of the thin plate 1 is the open area 18, the shape of the product during the forming process can be visually observed, and the forming conditions can be effectively adjusted during the forming process ■The forming area of the thin plate 1 Since the area facing the other side of the area is also an open area 18, the installation space is small, such as the height dimension being small.

■Mold cost is low because upper and lower dies are not required.■The area facing the other side of the forming area of thin plate 1 is open area 18, and there is no operation to sandwich the thin plate 1 between upper and lower dies, so safety is improved. is high.

■When forming the thin plate 1 with the punch 14, the tension force that holds the peripheral edge of the thin plate 1 is controlled by the tension clamper 1.
2 directly tensions and holds the thin plate 1, and a certain degree of wrinkle prevention can be achieved with a relatively small tension force. Therefore, the wrinkle pressing force that should be applied to the peripheral edge of the thin plate 1 by the tension clamper 12 and/or the wrinkle pressing clamper 13 can be reduced.

■The tension force and/or the wrinkle suppressing force applied to the peripheral edge of the thin plate 1 can be adjusted for each part of the peripheral edge. Alternatively, it is possible to perform tension forming and/or wrinkle forming that is optimal for the shape of the product, such as by changing the wrinkle suppressing force.

(2) Since the sub-processing tools can be arranged in the open area 18, the thin plate 1 can be subjected to vibration forming, trim forming, piercing forming, etc. at the same time as drawing forming of the thin plate 1.

(Fourth Embodiment) As shown in FIGS. 15(A) and 15(B), the drawing device 40 includes an inner ram 42 provided at the center of the soil of a frame 41.
A punch 44 is provided on the inner slide 43 of the frame 41, and a lower die 46 is provided on a bolster 45 provided at the bottom of the frame 41.
It is equipped with

Then, the drawing device 40 operates the upper 4 parts of the frame 41.
A corner wrinkle pressing plate 49 is provided on the outer slide 48 of the outer ram 47 provided at each of the two corners. The corner wrinkle pressing plate 49 can press a part of the peripheral edge corner of the region to be formed of the thin plate 1 between it and the upper surface of the lower die 46, and can apply a wrinkle pressing force F2 to the thin sheet ff1l.

Furthermore, the drawing device 40 is equipped with a tension clamper 50 on each of the four straight portions of the outer periphery of the lower die 46. The tension clamper 50 includes a clamping part 50A that clamps the peripheral edge of the forming area of the thin plate 1, and a cylinder 50B that can move the clamping part 50A toward and away from the thin plate 1. ing. Thereby, each tension clamper 50 can clamp the peripheral straight portion of the region to be formed of the thin plate 1, and apply tension force F1 to the peripheral portion.

Therefore, in the case of draw forming [40], the thin plate 1 is drawn by pressing the punch 44 and the lower die 46 against the thin plate 1 clamped by the corner wrinkle presser plate 49 and the tension clamper 50. It happens.

In the above-mentioned drawing forming apparatus i 40, each corner wrinkle presser plate 49 can be operated independently of each other so as to adjust the wrinkle presser force F2 on each peripheral corner portion of the thin plate 1 for each peripheral corner portion.

Further, in the drawing device 40, each tension clamper 50 can operate independently from each other so as to adjust the tension force F1 for each peripheral straight portion of the thin plate 1 for each peripheral straight portion.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the following effects (1) and (2) are achieved.

■When forming the thin plate 1 with the punch 44 and the lower die 46,
The tension force that holds the peripheral edge of the thin plate 1 is provided by the tension clamper 50 that directly pulls and holds the thin plate 1, and a certain degree of wrinkle prevention can be achieved with a relatively small tension force F1. Therefore, the wrinkle pressing force that should be applied to the peripheral edge of the thin plate 1 by the tension clamper 50 and the wrinkle pressing plate 49 can be reduced.

(2) The tension force applied to the peripheral edge of the thin plate 1 can be adjusted for each part of the peripheral edge, and by changing the tension force on each side of the product, it is possible to perform tension forming that is optimal for the shape of the product.

[Effects of the Invention] As described above, according to the present invention, it is possible to draw-form a thin plate without sandwiching it between upper and lower dies and with reduced screw pressing force.

Furthermore, according to the present invention, when drawing and forming a thin plate, it is possible to apply wrinkle control that is optimal for the shape of the product.

Further, according to the present invention, a thin plate can be drawn and processed at the same time.

Further, according to the present invention, when forming a thin plate using upper and lower dies, drawing forming can be performed with reduced wrinkle pressing force.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a drawing apparatus according to a first embodiment of the present invention, FIG. 2 is a schematic diagram showing a drawing apparatus according to a second embodiment of the invention, and FIG. 3 is a schematic diagram showing a drawing apparatus according to a second embodiment of the present invention. FIG. 4 is a schematic diagram showing an example of a direct-acting tension clamper, FIG. 5 is a schematic diagram showing an example of a wedge-type tension clamper, and FIG. 6 is a schematic diagram showing an example of a wedge-type tension clamper. FIG. 7 is a schematic diagram showing an example of a tension clamper, FIG. 7 is a schematic diagram showing an example of a lever-type wrinkle presser clamper, FIG. 8 is a schematic diagram showing an integrated wrinkle presser plate, and FIG. 9 is a split type wrinkle presser plate. FIG. 10 is a schematic diagram showing partial restraint forming, FIG. 11 is a schematic diagram showing partial strike forming, FIG. 12 is a schematic diagram showing vibration forming, and FIG. 13 is a schematic drawing showing trim, piercing, and FIG. 14 is a schematic diagram showing flange forming, FIG. 14 is a schematic diagram showing bulge forming, and FIG. 15 is a schematic diagram showing a drawing device according to a fourth embodiment of the present invention. 10.20.30... Drawing forming device, 12... Tension clamper, 13... Wrinkle clamper, 14... Punch, 18... Oven area, 40... Drawing forming device, 44. ...Punch, 46...Lower die, 49...Wrinkle holding plate, 50...Tension clamper.

Claims (5)

[Claims] (1) A clamper capable of clamping the peripheral edge of the forming area of the thin plate and applying tension force and/or wrinkle suppressing force to the peripheral edge, and a punch that presses against one surface of the forming area of the thin plate. A drawing forming device for a thin plate, wherein an area facing the other surface of the forming area of the thin plate is an open area, and the punch is pressed against the thin plate clamped by the clamper to perform drawing forming on the thin plate. (2) The thin plate drawing apparatus according to claim 1, wherein the clamper is configured to be able to adjust the tension force and/or the wrinkle pressing force on the peripheral edge of the thin plate for each peripheral edge. (3) The thin plate drawing apparatus according to claim 1 or 2, wherein a sub-processing tool for the thin plate is arranged in the open area. (4) In a thin plate drawing machine equipped with upper and lower dies that clamp the peripheral edge of the forming area of the thin plate and press against the upper and lower surfaces of the forming area of the thin plate, tension force is applied to the peripheral edge of the thin plate. A drawing forming device for a thin plate, which is equipped with a clamper capable of forming a thin plate, and performs drawing forming on a thin plate by pressing upper and lower molds against the thin plate clamped by the clamper. (5) The thin plate drawing apparatus according to claim 4, wherein the clamper is configured to be able to adjust the tension force applied to the peripheral edge of the thin plate for each peripheral edge.