JP2927380B2 - Hemming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hemming device for connecting a peripheral portion between an outer panel and an inner panel to a product having a box sectional structure constituted by combining an outer panel and an inner panel by hemming. It is.

[0002]

2. Description of the Related Art For example, a product having a box cross-sectional structure in which an outer panel and an inner panel are connected to each other, such as a door of an automobile, is formed by hemming a peripheral portion between the outer panel and the inner panel.

In the hemming process, as shown in FIGS. 9 to 11, an inner panel (2) is superimposed on an outer panel (1), and a peripheral flange (1a) of the outer panel (1) is bent by a preliminary bending blade (3). The peripheral flange (1a) once bent at a predetermined angle and then preliminarily bent by the hem blade (4) is fully bent and overlapped and joined to the peripheral flange (2a) of the inner panel (2).

[0004]

There are two types of doors mounted on a motor vehicle: a door for a three-door vehicle and a door for a five-door vehicle even in the same vehicle type, and the door length is different. Therefore, even if the door for a three-door vehicle (hereinafter, simply referred to as three doors) and the door for a five-door vehicle (hereinafter, simply referred to as five doors) are to be machined by a common hemming device, a preliminary bending blade and a hem for three doors are used. When the blade and the pre-bending blade for 5 doors and the hem blade are installed in one mold,
Since the small 5-door pre-bending blade and the hem blade interfere with the large 3-door panel, hemming of the 3-door was not achieved, and each was manufactured using a dedicated hemming device.

As described above, conventionally, the three-door and the five-door are hemmed by dedicated hemming devices, respectively, so that the equipment becomes large and the cost is high. In addition, a large installation space was required.

An object of the present invention is to provide a hemming apparatus which can hemming products of different sizes with one apparatus.

[0007]

According to the present invention, a frame-shaped first supporting portion for supporting a peripheral edge of a five-door and a part of a peripheral edge of a three-door is formed integrally with a rear end of the first supporting portion. A lower die comprising a hook-shaped second support portion supporting the rear part of the three doors, and a swingable arrangement between the first support part and the second support part. A pre-bending blade for 5 doors to be performed, a retracting mechanism for supporting the pre-bending blade for 5 doors so as to be able to shift in the width direction and to move up and down, and to be swingably disposed behind the second support portion of the lower die. A three-door preliminary bending blade for performing preliminary bending of the rear part of the three-door; an upper die; a five-door hem blade foldably mounted on the upper die; and a three-door hem mounted on the upper die. A blade and a 5-door pre-bending blade and a 5-door hem blade are protruded into a work area when processing the 5-door, During machining of the door, the 5 preliminary bending blade door is shifted and lowered, relief from the work area is a heme blade for 5 door those as folded on the lower surface of the upper die.

[0008]

The above-mentioned hemming device is used when processing five doors.
The door is supported by the lower first support portion, and
Hemming with a door pre-bending blade and a 5-door hem blade, and at the time of 3-door processing, the 5-door pre-bending blade is once shifted in the width direction and then lowered to escape below the lower mold. The 5-door hem blade is folded down on the lower surface of the upper mold and removed from the work area. In this state, the 3-door is supported by both the first support portion and the second support portion, and the 3-door preliminary bending blade and the 3-door Hemming with a hem blade.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the hemming device is configured to hemm three doors (6) and five doors (7) with reference to the front end. The common pre-bending blades (11) and (18) and the three-door pre-bending blade (12) arranged in front and side of the upper mold (42) and the lower mold (10) are arranged in the lower mold (10). 5 door pre-bending blade (13), common hem blade (14), 3 door hem blade (15), 5 door hem blade (16), corner pre-bending mechanism (22) ... (24), etc. And a structure capable of retracting the 5-door preliminary bending blade (13) and the 5-door hem blade (16). The pre-bending blade (11) and the hem blade (14) arranged at the front of the lower mold (10) perform hemming of the front ends of the three-door (6) and the five-door (7). .

The hemming device has a first guide mechanism (1) for guiding the front portions of the three-door (6) and the five-door (7).
7) A second guide mechanism (20) for guiding the rear part of the three-door (6) to the lower mold (10), and a third guide mechanism (21) for guiding the five-door (7) to the lower mold (10). Clamp mechanism (25) (2) for clamping door (6) or five door (7)
6) 5 doors (7) or 3 doors (6) with lower mold (10)
Lift mechanism (27) for loading or unloading to / from transport device (3) for transporting five-door (7) or three-door (6)
0) and the like.

The lower mold (10) has a first support portion (31) which is frame-shaped and whose peripheral edge is shaped like the peripheral edge of an outer panel (7a) of a five-door (7), and an outer panel of a three-door (6). (6a) An inverted-L shape supporting the rear peripheral edge and having a peripheral edge of 3
A second support portion (32) having a shape following the rear edge of the outer panel (6a) of the door (6), and the second support portion (32) is integrated with the rear portion of the first support portion (31). And a space (33) is provided between the two for accommodating the 5-door preliminary bending blade (13). The lower die (10) receives the outer panel (7a) of the five-door (7) only by the first support part (31), and receives the outer panel (6a) of the three-door (6) as the first panel.
The support portion (31) and the second support portion (32) receive it.

A pre-bending blade (hereinafter referred to as a first pre-bending blade) (11) arranged in front of the lower mold (10) is shown in FIG.
As shown in FIGS. 2 and 4, the outer periphery of the outer panel (6a) of the three-door (6) is formed so as to press the peripheral edge thereof, and the guide pieces (82) and (82) of the first guide mechanism (17) are provided on the rear end side. Slits (34) and (34) for releasing 82) are formed. The first preliminary bending blade (11) is attached to an end face of a support arm (36) (36) that is swingably attached to base frames (35) (35) arranged on both sides in the width direction.
Then, tension coil springs (40) (40) are mounted between the base frames (35) and (35) and spring mounting plates (37) (37) extending forward, and the tension coil springs (40) (40) are mounted. At the support arm (36) (3
6) is always pulled forward, and the first preliminary bending blade (11) is inclined forward of the first support portion (31) to stand by. Further, cam followers (41) and (41) are rotatably mounted on the upper portions of the support arms (36) and (36), and the cam followers (41) and (41) are mounted on a cam driver (not shown) provided on the upper die (42). ), The support arms (36) and (36) are swung forward, the first preliminary bending blade (11) is tilted backward, and the outer panel (6a) of the three-door (6) or the five-door (7). Of the outer peripheral panel (7a) is preliminarily bent.

A preliminary bending blade (hereinafter referred to as a second preliminary bending blade) (18) arranged on the side of the lower mold (10) is shown in FIG.
As shown in FIG. 3, the outer periphery of the outer panel (6a) of the three-door (6) is formed so as to press the lower periphery. The second preliminary bending blade (18) is attached to an end face of a support arm (130) that is swingably attached to a base frame (127) arranged at several positions in the front-rear direction. And a spring mounting plate (131) extending from each base frame (127).
, A tension coil spring (132) is mounted, and the support arm (13) is attached by the tension coil spring (132).
0) is always pulled to the side, and the second pre-bending blade (18) is inclined to the side of the first support portion (31) and the second support portion (32) to stand by. A cam follower (133) is rotatably mounted on the upper part of the support arm (130), and the cam follower (133) is pressed by a cam driver (not shown) provided on the upper die (42). The support arm (130) is swung forward to
The pre-bending blade (18) is knocked down, and the outer panel (6a) of the 3-door (6) or the outer panel (7a) of the 5-door (7).
Preliminary bend of the lower edge of.

The three-door preliminary bending blade (12) arranged behind the lower die (10) has a front part of a three-door (6).
Of the outer panel (6a) are formed so as to press the rear peripheral edge thereof, and slits (38) (38) for releasing the guide pieces (84) (84) of the second guide mechanism (20) are formed on the distal end side. . The three-door preliminary bending blade (12) is also attached to support arms (44) (44) that are swingably supported by the base frames (43) (43). Base frame (43) (43)
The springs 46 are mounted between the spring mounting plates 45 and 45 extending rearward from the coil springs 46, 46,. The cam followers (47) (4) provided on the support arms (44) (44)
7) is pressed by a cam driver (not shown) provided on the upper die (42) to swing the support arms (44) and (44) forward, and the 3-door preliminary bending blade (12) is moved. Tilt forward and preliminarily bend the rear edge of the outer panel (6a) of the three-door (6).

As shown in FIGS. 3 to 6, the pre-bending blade (13) for the 5-door is an outer panel (7a) of the 5-door (7).
The slits (50) and (50) are formed on the distal end side to allow the guide pieces (87) and (87) to escape. The 5-door preliminary bending blade (13) shifts and moves up and down by the retraction mechanism (51), and is placed in the space (33) of the lower die (10) when the 3-door (6) is processed. Is stored.

The evacuation mechanism (51) includes a pair of linearly-moving bearings (53) on a pair of support frames (52) and (52) which are fixed upright.
A lifting rod (56) of a lifting cylinder (55) (55) mounted on a supporting frame (52) (52) by supporting the lifting table (54) vertically via (53).
(56) is connected to brackets (57) and (57) attached to the front and rear ends of the lifting table (54). On the other hand, the support table (60) is arranged on the upper surface of the lifting table (54), and the lower flange (61) of the support table (60) is attached to the front and rear ends of the upper surface of the lifting table (54) along the width direction. Bearings (62) (62), (63) (6
It is slidably held in the width direction in 3). Then, the piston rod (65) of the shift cylinder (64) attached to the lower surface of the elevating table (54) is locked to a locking bracket (66) vertically provided on the lower surface of the support table (60). Therefore, the lifting cylinder (55) (55)
The elevating table (54) moves up and down to move the support table (60) up and down, and the shift cylinder (64) expands and contracts to shift the supporting table (60) in the width direction. Has become.

Support blocks (70) and (71) are swingably attached to support arms (67) and (67) formed at the front and rear ends of the upper surface of the support table (60), respectively. A 5-door pre-bending blade (13) is mounted on the front surface. The 5-door preliminary bending blade (13) and the front support block (70) are arranged in the space (33) between the first support portion (31) and the second support portion (32) of the lower die (10). And the rear support block (71) is connected to the second support section (3).
The two links which are arranged behind 2) and which are bent at the upper end of the front support block (70) and the upper end of the rear support block (71) so as to bypass the second support portion (32). (72) Connected at (72). Further, tension coil springs (74) and (74) are mounted between the rear support block (71) and the spring mounting plate (73) attached to the rear end face of the support table (60), and the tension coil springs (74) and (74) are mounted. ), The rear support block (71) is always pulled rearward, the front support block (70) is tilted rearward via the links (72) and (72), and the 5-door preliminary bending blade (13) is first supported. The portion (31) is tilted rearward to stand by.

A cam follower (76) is rotatably mounted on the upper pin (75) of the rear support block (71), and this cam follower (76) is attached to the upper die (42) as shown in FIG. The rear support block (71) is rocked forward by the cam driver (77), and the front support block (70) is moved through the links (72) and (72).
Is tilted forward and preliminarily bent with the 5-door preliminary bending blade (13).

The cam driver (77) forms a peak (80) and a valley (81) from the lower end side on the pressing cam surface,
At the peak (80), the 5-door preliminary bending blade (13) is tilted forward to perform preliminary bending, and when the preliminary bending is completed, the pressing force is released at the valley (81) and the 5-door preliminary bending blade is released. The pre-bending blade (13) is released backward so as not to interfere with the 5-door hem blade (16) descending from above.
The cam driver for operating the other first pre-bending blade (11), the three-door pre-bending blade (12), and the like are similarly configured, and include the first pre-bending blade (11) and the three-door pre-bending blade ( When 12) completes the pre-bending, it is temporarily released backward so as not to interfere with each hem blade (14) (15).

The first guide mechanism (17) for guiding the front portions of the outer panels (6a) and (7a) of the three-door (6) and the five-door (7) includes a guide member (82) and a lower die (10). )
The guide portions (83) and (83) at the upper end are always projected upward from the first support portion (31).

A second guide mechanism (20) for guiding the rear portion of the outer panel (6a) of the three-door (6) includes a guide piece (8).
4) The (84) is mounted upright on the rear end face of the second support portion (32) of the lower mold (10), and the upper guide portion (8) is provided.
5) (85) always protrudes above the second support portion (32).

The third guide mechanism (21) for guiding the rear part of the outer panel (7a) of the five-door (7) includes a lower mold (10).
The guide pieces (87) and (87) are swingably mounted on the upper end of a mounting plate (86) which is fixed upright below the first support portion (31), and the swing cylinder (90) mounted on the mounting plate (86). ) To swing the guide pieces (87) and (87). When the oscillating cylinder (90) expands and contracts, the guide pieces (87) and (87) oscillate, and during the extension operation, the guide pieces (87) and (87) are erected and the upper-side guide portions (91) and (91) are raised. The first support portion (31) is projected upward from the rear portion, and the rear end of the outer panel (7a) of the five-door (7) is guided and positioned. In addition, the swing cylinder (9
When (0) is shortened, the guide pieces (87) and (87) escape below the lower mold (10).

Corner Preliminary Bending Mechanism (22) (2)
4) are both sides of the front part of the lower mold (10) and the second support part (3).
2) It is installed at three places on the rear side. In each of the corner pre-bending mechanisms (22) to (24), a pre-bending blade (93) is swingably attached to the base frame (92) and provided on the pre-bending blade (93) and the base frame (92). A tension coil spring (95) is mounted between the spring and the spring mounting plate (94).
Is pressed down by a cam driver (not shown) provided at the first position to perform preliminary bending. The pre-bending mechanisms (22) and (23) provided at the front perform pre-bending at the corners at the front end of the 5-door (7) and the 3-door (6), and the pre-bending mechanism (24) provided at the rear is Preliminary bending of the corner at the rear end of the third door (6) is performed.

The clamp mechanisms (25) and (26) are provided on the side of the lower mold (10). Clamp mechanism (25)
(26) mounts the clamp plate (9) on the base frame (96).
7) is swingably mounted, and a spring mounting plate (100) provided on the clamp plate (97) and the base frame (96).
And a tension coil spring (101) is mounted between them. The clamp mechanisms (25) and (26) are also pushed down by a cam driver (not shown) provided on the upper die (42), and the inner panel (7b) and the outer panel (7a) or 3 The inner panel (6b) and the outer panel (6a) of the door (6) are pressed from above and clamped.

The lift mechanism (27) includes a lifter (102)
And a belt conveyor (103) (103) which is raised and lowered by a lifter (102). Lifter (10
2) guide rods (10) on the support frame (104).
5) (105) is supported so as to be able to move up and down freely, a support plate (106) is attached to the upper ends of the guide rods (105) and (105), and is supported by a lift cylinder (107) attached to the center of the support table (60). The plate (106) is raised and lowered. Then, the support plate (1) of the lifter (102)
06), belt conveyors (103) and (103) are attached to both sides. Belt conveyor (103) (103)
Are driven by a single drive motor (110) and are connected and synchronized by a joint (111). The lift mechanism (27) extends and retracts the lift cylinder (107) to thereby operate the belt conveyor (103).
(103) is raised up to the transfer line of 5 doors (7) or 3 doors (6) and lowered to the same height as the upper surface of the lower mold (10).

The conveyor (30) is provided on a conveyor line at the upper front of the lower mold (10) on a belt conveyor (112) (11).
2) is installed, and drive motors (113) and (113)
It is designed to be driven independently of each other,
Both are controlled so as to synchronize and circulate.

The belt conveyor (11) of the conveying device (30)
3) Between (113), 5 doors (7) that are carried in
Alternatively, the detection mechanism (11) for confirming the arrival of the three doors (6)
4) is provided. The detection mechanism (114) includes a detection table (1).
15) a detection arm (116) is swingably mounted on the detection table (115), and the detection cylinder (1) is swingably mounted on the detection base (115).
At 17), the detection arm (116) is configured to swing, and the sensor (120) is provided at the upper end of the detection arm (116).
Is installed. The detection arm (116) makes the upper end and the sensor (120) protrude above the transport line when standing up, and detects the leading end of the 5-door (7) or 3-door (6) that has been carried in by the sensor (120). It is determined whether a five-door (7) or a three-door (6) has arrived. In addition, when it falls down, it enters into the transport device (30) and comes off the transport of the five-door (7) or the three-door (6).

[0029] Common hem blade (14) for main bending of the front part
And 5 door hem blade (1) that performs full bending of 5 door (7)
6) A 3-door hem blade (15) for performing final bending of the rear portion of the 3-door (6) is provided on the lower surface of the upper die (42). The 5-door hem blade (16) is configured to retreat upward during the processing of the 3-door (6).

That is, as shown in FIG. 7 and FIG.
A mounting bracket (121) is mounted on the lower surface of 2), and a support arm (123) is coupled to a rotation support shaft (122) rotatably supported by the mounting bracket (121). Hem blade (16) is attached. A swinging lever (124) is attached to one end of the rotation support shaft (122), and the swinging lever (124) is swingably attached to the upper die (42).
It is configured to swing in 5).

When the five-door (7) is machined, the retracting cylinder (125) is shortened to rotate the rotary support shaft (122) via the swinging lever (124), and the supporting arm (12).
3) is swung downward to move the 5-door hem blade (16) to the processing position. During the processing of the three-door (6), the retraction cylinder (125) extends to move the support arm (12).
3) is swung upward to retract the 5-door hem blade (16) upward.

The hemming process by the above-mentioned hemming device is as follows.
At the time of machining the five-door (7), the elevating cylinders (55) and (55) of the retracting mechanism (51) are extended to operate the support table (6).
0) is raised, and then the shift cylinder (64) is extended to shift the support table (60) to the processing position, and the 5-door preliminary bending blade (13) is moved to the first position of the lower die (10).
It is arranged above the rear part of the support part (31). On the other hand, the retracting cylinder (125) provided on the upper die (42) is shortened to cause the 5-door hem blade (16) to protrude to the lower processing position.

Next, the lift cylinder (107) of the lift mechanism (27) is extended to operate the belt conveyor (103).
(103) is raised to the transport line, and at the same time, the swing cylinder (90) of the third guide mechanism (21) is extended to elevate the guide pieces (87) and (87), and furthermore, the undulation of the detection mechanism (114) The detection arm (116) is erected by extending the cylinder (117).

Then, the five doors (7) with the outer panel (7a) facing downward and the inner panel (7b) facing upward are carried in by appropriate carrying means, and the belt conveyor (103) ( 103), when the arrival is confirmed by the sensor (120), the lift cylinder (107) is shortened to operate the belt conveyor (103).
(103) is lowered, and the 5-door (7) is mounted on the lower mold (10). At the time of the lowering, the five-door (7) connects the front end of the outer panel (7a) to the first guide mechanism (17) at the front.
Guide pieces (82) and (82), and the rear end of the
Guided by the guide pieces (87) and (87) of the guide mechanism (21), it is supplied to a predetermined position of the first support portion (31) of the lower die (10) and positioned.

When five doors (7) are supplied to the lower mold (10), the undulating cylinder (117) of the detecting mechanism (114) is shortened, and the detecting arm (116) is retracted downward.
At the same time, the upper mold (42) starts lowering. With the lowering of the upper mold (42), the clamp mechanisms (25) and (26) are operated first to depress the clamp plates (97) and (97), and the outer panels (7a) and the inner Hold down the panel (7b) and clamp the five doors (7).

When the clamping is completed, the first preliminary bending blade (11), the five-door preliminary bending blade (13), the second preliminary bending blade (18), the corner preliminary bending blade (93),. (10), the outer panel (7a) is preliminarily bent. The pre-bending is completed, the first pre-bending blade (11), the 5-door pre-bending blade (13), and the second pre-bending blade (1).
8) When the corner preliminary bending blades (93) stand up and escape from the lower mold (10), finally, the hem blade (1)
The hem blade (4) for 4) and 5 doors descends, and the outer panel (7a) is fully bent, and the outer panel (7) is bent.
a) and the inner panel (7b) are connected.

When the processing is completed, the upper die (42) is raised, the clamp mechanisms (25) and (26) are retracted and the five doors (7) are released. Next, the lift cylinder (107) of the lift mechanism (27) extends to operate the belt conveyor (10).
3) (103) is raised, and the 5-door (7) is lowered to the lower mold (1).
0) and lift it to the transport line.

The five-door (7) is lifted up to the transfer line, and the sensor (1) provided on the lift cylinder (107) is provided.
26), the belt conveyors (103) and (103) of the lift mechanism (27) and the belt conveyors (112) and (112) of the transport device (30) are circulated, and the five-door (7) is moved to the lift mechanism. It is sent from (27) to the transport device (30) and is carried out by the transport device (30).

When the five doors (7) have been carried out, the belt conveyors (103) and (103) of the lift mechanism (27) and the belt conveyors (112) and (112) of the transport device (30).
Is stopped, and then the up-and-down cylinder (117) of the detection mechanism (114) extends to move the detection arm (116) upright from the lower mold (10) to perform the next processing.

When processing the three doors (6) by the hemming device, the shift cylinder (64) of the retracting mechanism (51) is shortened to shift the support table (60) in the width direction. As shown in FIG. 5, the end (13a) of the 5-door preliminary bending blade (13) is once shifted laterally from above the second support portion (32) of the lower die (10), and then the lifting cylinder (55) ( 55) to shorten the support table (6).
0) is lowered, and the 5-door preliminary bending blade (13) is retracted below the lower mold (10). On the other hand, the evacuation cylinder (125) provided on the upper mold (42) is extended to operate as shown in FIG.
As shown in the figure, the 5-door hem blade (16) is folded on the lower surface of the upper die (42). Further, the swinging cylinder (90) of the third guide mechanism (21) for guiding the five doors (7) is shortened to retract the guide pieces (87) and (87) below the lower mold (10).

When the 5-door preliminary bending blade (13), the 5-door hem blade (16), and the 5-door guide pieces (87), (87) are respectively retracted from the working area, the outer panel (6) is opened.
a) is lowered, and the three doors (6) with the inner panel (6b) raised are loaded by appropriate loading means and supplied onto the belt conveyors (103) and (103) of the lift mechanism (27). .

Then, the three doors (6) serve as the detection mechanism (114).
When the arrival is confirmed by the sensor (120), the lift cylinder (107) is shortened to operate the belt conveyor (10).
3) Lower the (103) and lower the three-door (6) to the lower mold (1).
0) Place it on the top. At the time of the lowering, the three-door (6) connects the front end of the outer panel (6a) to the first guide mechanism (17).
Guide pieces (82) and (82), and the rear end is
It is guided by the guide pieces (84) and (84) of the guide mechanism (20) and supplied to predetermined positions of the first support portion (31) and the second support portion (32) of the lower die (10).

When three doors (6) are supplied to the lower mold (10), the undulating cylinder (117) of the detection mechanism (114) is shortened, and the detection arm (116) is retracted downward.
At the same time, the upper mold (42) starts lowering. With the lowering of the upper mold (42), the clamp mechanisms (25) and (26) are first operated to lower the clamp plates (97) and (97), and the outer panels (6a) and the inner The panel (6b) is pressed to clamp the three doors (6).

When the clamping is completed, the first preliminary bending blade (11), the three-door preliminary bending blade (12), the second preliminary bending blade (18), the corner preliminary bending blade (93), and the like are then moved to the lower mold. (10), the outer panel (6a) is preliminarily bent. The pre-bending is completed, the first pre-bending blade (11), the three-door pre-bending blade (12), and the second pre-bending blade (1).
8) When the corner preliminary bending blades (93) stand up and escape from the lower mold (10), finally, the hem blade (1)
4) and the hem blade (15) for the third door descends, and the outer panel (6a) is fully bent, so that the outer panel (6) is bent.
a) and the inner panel (6b) are connected.

When the processing is completed, the upper die (42) is raised, the clamp mechanisms (25) and (26) are retracted and the three doors (6) are released. Next, the lift cylinder (107) of the lift mechanism (27) extends to operate the belt conveyor (10).
3) (103) is raised, and 3 doors (6) are lowered to the lower mold (1).
0) and lift it to the transport line.

When the three-door (6) is lifted to the transport line and detected by the sensor (126), the belt conveyors (103) and (103) of the lift mechanism (27) and the belt conveyor (103) of the transport device (30). 112) (112)
And the three doors (6) are sent from the lift mechanism (27) to the transfer device (30), and are carried out by the transfer device (30).

When the unloading of the three doors (6) is completed, the belt conveyors (103) and (103) of the lift mechanism (27) and the belt conveyors (112) and (112) of the transport device (30).
Is stopped, and then the up-and-down cylinder (117) of the detection mechanism (114) extends to move the detection arm (116) upright from the lower mold (10) to perform the next processing.

As described above, when the 3-door (6) is machined, the 5-door preliminary bending blade (1) for machining the rear end of the 5-door (7) is used.
Since the hem blade (16) for 3 and 5 doors and the guide pieces (87) and (87) for guiding are retracted from the work area, the outer panel (6a) and the inner panel (6b) of the 3 door (6). Will not hurt. Further, since the 5-door preliminary bending blade (13) is once shifted in the horizontal direction and lowered, the 5-door preliminary bending blade (13) does not interfere with the second support portion (32) of the lower mold (10). Can be evacuated.

[0049]

According to the present invention, by moving the pre-bending blade for 5 doors and the hem blade for 5 doors to the inside and outside of the working area, hemming of the 3 doors and 5 doors having different sizes can be performed by one unit. It can be performed by an apparatus, and the equipment can be reduced in size and the installation space can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a hemming device according to the present invention.

FIG. 2 is a sectional view of a hemming device according to the present invention.

FIG. 3 is a cross-sectional view showing a supporting structure of a 5-door preliminary bending blade according to the present invention.

FIG. 4 is a plan view showing a supporting structure of a 5-door preliminary bending blade according to the present invention.

FIG. 5 is a rear view showing a supporting structure of a 5-door preliminary bending blade according to the present invention.

FIG. 6 is a cross-sectional plan view showing a support structure for a 5-door preliminary bending blade according to the present invention.

FIG. 7 is a side view showing a support structure of a 5-door hem blade according to the present invention.

FIG. 8 is a rear view showing a support structure of a 5-door hem blade according to the present invention.

FIG. 9 is a sectional view showing a state where the outer panel and the inner panel are set.

FIG. 10 is a cross-sectional view showing a state where pre-bending has been performed.

FIG. 11 is a cross-sectional view showing a state where the main bending is performed.

DESCRIPTION OF SYMBOLS 6 3 door 7 5 door 10 Lower mold 12 3 Door preliminary bending blade 13 5 Door preliminary bending blade 15 3 door hem blade 16 5 door hem blade 31 First support portion 32 Second support portion 42 Upper die 51 Evacuation mechanism

Claims (1)

(57) [Claims] 1. A frame-shaped first support portion for supporting a peripheral edge of a 5-door and a portion of a peripheral edge of a 3-door, and a hook integrally formed at a rear end of the first support portion and supporting a rear portion of the 3-door. A lower die comprising a second supporting portion having a shape, a 5-door preliminary bending blade which is swingably disposed between the first supporting portion and the second supporting portion and performs preliminary bending of a rear portion of the 5-door. A retraction mechanism for supporting the 5-door preliminary bending blade so as to be able to shift in the width direction and to be able to move up and down; and a swinging mechanism disposed behind the second support portion of the lower die, for preliminary bending of a rear portion of the 3-door. A three-door preliminary bending blade, an upper die, a five-door hem blade foldably mounted on the upper die, and a three-door hem blade mounted on the upper die. At the time of machining, the 5-door preliminary bending blade and the 5-door hem blade are projected into the work area, and at the time of machining of the 3-door, the 5-door is bent. And the use pre-bending blade is shifted and lowered, relief from the work area, hemming apparatus, wherein a heme blade for 5 doors as folded on the lower surface of the upper die.