JPS5948273A - Bag form hemming member and device for producing the same - Google Patents

Abstract

PURPOSE:To obtain a favorable sealing performance without requiring any special design of a joint part, by providing a flat surface part as a sealing surface at an outside surface of a bag form hemming part. CONSTITUTION:By providing a bag form hemming construction at an end part of a roof panel 27, the thickness of a hemming part is largely increased, so that the sealing surface 30 for a sealing member 29 intermediately provided between the hemming part and an end part of a sunroof panel 28 can be made to be the outside surface of the hemming part, and it is unnecessitated to provide any extension part on the side of the sunroof panel 28. In addition, since the sealing surface 30 on the hemming part side is formed as a flat surface, sufficient pressingagainst the sealing member 29 can be obtained, and a favorable sealing performance can be obtained. Further, since the sealing member 29 is intermediately provided between the roof panel 27 and the end part of the sunroof panel 28, any groove or the like where water tends to be trapped is not formed, and the favorable sealing performance is further promoted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to automobile body parts and equipment for making them, and particularly for hemming pressed steel plates whose edges are processed into a hemmed structure (three-piece construction and the like). This relates to processing equipment.

In general, the panel section of an automobile body has a structure in which an outer pressed product consisting of a flat thin plate covering the outer surface is supported by an inch pressed product with a relatively strong corrugated sheet structure, and the edges of the outer pressed product are supported. is processed into a hemming credential that is folded back on the edge side of the inch-pressed product. The hemming portion, which serves as a panel end piece, is required to have good sealing properties against water when joining with other members.

The conventional hemming structure is a tear-and-fold type hemming structure as shown in FIG.
Since the outer pressed product 2 was folded back around J+ It along the wall thickness of the inch pressed product 1, the thickness of the hemming portion 3 could not be secured. Therefore, when joining the other member 4, in order to increase the length of the sealing surface to some extent and ensure sealing properties, the other member 4 is extended to the side of the panel 5 having the hemming part 3, and the sealing part 6 is It was necessary to apply this to the inner surface of the panel 5. In such a structure, a groove is formed between the outer surface of the hemming part 3 and the other member 4, and water tends to accumulate in the groove. Therefore, in order to ensure sufficient sealing performance, the seal part 6 must be made large. At the same time, special measures were required for the extension of the other member 4. Particularly in the case where the panel 5 in FIG. 1 is a roof panel and the other member 4 is a sunroof panel, in addition to the above-mentioned sealing problem, the roof panel 4 is a roof panel. Since the sunroof panel 4 extends to the lower side of the panel 5, there is a problem that the sunroof panel 4 cannot be opened directly to the upper side.

The present invention (in order to solve the above problems, it is possible to ensure sufficient sealing performance without providing a special extension part to the other member that is joined to the member having the hemming part, and furthermore, the other member is a phosphor roof panel. It is an object of the present invention to provide a processing device for a hemming structure in which a 9-inch roof panel is directly spaced upward by 1 q in some cases.

In order to achieve this object, in the protruding hemming member of the present invention, the hemming 4? The I31 part is formed into a protruding shape in which the hemming part is swollen in the thickness direction so as to wrap around the end of the inch-pressed product that has been bent in advance, and a part I31 is formed in a protruding shape that bulges in the thickness direction of the hemming part so as to wrap around the end of the inch-pressed product that has been bent in advance. A flat portion is formed. In the hemming part having such a structure, the plate of the hemming part can be increased by shaping the hemming part into a protruding shape, and the outer surface of the hemming part, that is, the outer surface of the folded part of the hemming part, has enough space as a sealing part. In addition, since a flat part is formed on the outer surface of the hemming part, the sealing material can adhere sufficiently to the outer surface of the hemming part, and the outer surface of the hemming part exhibits sufficiently good sealing performance and has a one-warm sealing surface. How many things are possible?

By forming the seal portion on the outer surface side of the hemming portion, it is possible to eliminate water pools and drainage grooves that are formed in the conventional joint portion, thereby improving sealing performance.

Furthermore, if the hemming member of the present invention is applied to the joint part of the roof panel with the 1J lube panel, it is possible to obtain good sealing performance and eliminate the need for the extension part for sealing the conventional sunroof panel. It is also possible to open directly upwards.

In addition, in the protruding hemming member manufacturing apparatus of the present invention, the upper die and the lower die h which sandwich the inner press article and the outer press article are received, and the end of the outer press article is bent by the upper die, and the inch press A hemming blade that wraps around and further bends the pre-bent end of the product is moved diagonally from below so as to press the bent end of the outer press product to the lower surface of the inner press product. The bent end of the outer pressed product is bent along the pre-bent edge of the inner pressed product, and only the edge of the bent end of the outer pressed product is crimped to the lower surface of the inch pressed product, so the bent end The hemming part of the outer pressed product can be bent into a protruding shape by making the part up to the edge that is crimped to the lower surface of the inch pressed product hollow. A protruding hemming structure that holds the end of the inner press product with the edge of the barbed end! It is processed into a structure. Therefore, the edge of the outer pressed product is bent along the bent edge of the inch pressed product, so the outer surface of the hemming part of the outer pressed product has a shape that follows the bent end of the inch pressed product, and A flat portion is formed as a sealing surface, and good sealing with the sealing material is possible. Since this flat part is formed in the thickness direction of the pressed product, other parts joined to the hemming, such as lin roof panels, can be moved directly in the thickness direction without any obstruction, achieving the intended purpose. .

The shaped hemming member of the present invention and its ? A preferred embodiment of the 1jΔ device will be described with reference to the drawings.

First, FIGS. 2 and 3 show the configuration of a manufacturing apparatus for a shaped hemming member according to an embodiment of the present invention. FIG. 2 shows the entire apparatus, and numeral 7 in the figure is a lower mold on which an inner pressed product 8 and an outer pressed product 9 stacked on the inner pressed product 8 are placed, and is fixed on a lower surface plate 10. ing.

An upper die 11 is provided above the lower die 7 to clamp and fix the inner press product 8 and the outer press product 9 between the lower die 7 and the upper die 11 is fixed to the lower part of the upper surface plate 12. has been done. The upper mold 11 is provided with a guard portion 13 that can be bent downward to point the end of the outer press product 9 and has a side surface extending in the vertical direction.

On the side of the lower mold 7, a hemming blade 14 is movable from below the lower mold 7 toward the bent end of the outer pressed product 9 that is RWI'd together with the inno-pressed product 8 onto the lower mold 7 by the guide portion 13. It is provided. The hemming blade 14 is fixed to a movable bracket 15 and is movable together with the movable bracket 15. Moving bracket 1~
15 is slidably supported by a guard 16 provided diagonally on the frame portion of the lower surface plate 10, and a knuckle portion 18 is attached to the rod end of the cylinder 17 fixed to the frame portion of the lower surface plate 10. connected via the cylinder 17
By the operation of , it is possible to reciprocate linearly along the -C guide 1G.

The hemming blade 14 has a thick plate structure extending in the vertical direction, and has a flat surface 20 in the horizontal direction on the upper end surface 19, and a bend from the flat surface 20 diagonally downward on the cylinder 17 side to move the hemming blade 14. A slope 21 extending in the direction is formed. When the hemming blade 14 is moved obliquely upward by the cylinder 17, the flat surface 20
The positional relationship of each device is determined so that the crimping portion toward the upper surface of the inner press product 8 is located at an appropriate distance from the side surface of the guide portion 13. Note that 22 is a collar for upward movement of the movable bracket 15, and the stopper 22 restricts the pressing distance of the hemming blade 14 by the upper end flat surface 20 toward the lower surface of the product 8.

Next, the hemming member to be processed using the above method is hoisted.

FIG. 11 shows the hemming process sequence.

The outer pressed product 9 is stacked on the inner pressed product 8, which is bent into a flange shape 23 with the end facing downward and at a right angle, and the entire body is made of corrugated sheet metal to ensure strength. The part is bent downward into a seven-lunge shape 24 that is longer than the bent end 23 of the in-nables product 8 by the guide part 13 as the C upper mold 11 descends. Thereafter, the hemming blade 14 is advanced diagonally from below toward the bent end 24 of the outer pressed product 9, and
4 is further bent in the direction C toward the lower surface of the inner press product 8. That is, the hemming blade 14, which has been able to advance from diagonally downward by the operation of the cylinder 17, first has its upper end corner near the lower end of the bent end 24 of the outer press product 9, which is at the position 24-1 shown by the broken line in FIG. At this point, the hemming blade 14 moves further forward and pushes the side surface of the bent end 24 to bend the bent end 24 to the position 24-2. 20 bends the end tt part of the end part 24 to the inner press product 8
The hemming blade 14 advances until the hemming blade 14 is pressed against the lower surface of the hemming blade 14, and the advance of the hemming blade C is stopped by the stopper 22.
At this position, the hemming process of the end of the outer bracelet product 9 is completed.

The hemming part of the hemming member processed in this way is m
The part that is crimped to the lower surface of the inner press product 8 while holding the inner press product 8 in the N direction is only the edge of the bent end 24 of the outer press product 9, and the bent end 24
The part between the paralysis leading to the edge of the inner brace product 8 is bent along the folded end 23 of the inner brace product 8.
Since this part is not pressed all the way to the bottom surface of the inno-press product 8, this part remains swollen during the manufacturing process, and is bent to form a space between it and the bottom surface of the inno-pressed product 8, and the manufacturing hemming part 1! ? It will be done.

Further, since the bent end portion 24 is bent along the outer surface of the bent end portion 23 of the inner brace product 8, and the outward deformation of the bent end portion 24 at the time of bending is suppressed by the guide portion 13, the protruding hemmink portion A flat portion 25 extending in the vertical direction is formed on the outer surface of the hemming portion, that is, on the outer surface of the hemming portion on the guide portion 13 side. Therefore, the hemming part is shaped and has a flat part 25 on the outer surface to the right, and due to the bulge of the shaping, the tentative dimension of the hemming part in 7 directions is larger than that of the conventional flap type hemming. Jn has been greatly increased, the length of the outer corrugated surface extending in the vertical direction is secured to a dimension of 1 minute from the seat surface, and by forming a flat part on the outer surface of the sheet, it is possible to Adoption of the hemming portion E4 of the present invention ensures good sealing performance between the hemming portion and other members.

Moreover, the protruding hemming member of the present invention is the one of this embodiment (
For example, as shown in FIG. 5, the edge of the bent Q31 portion 24 of the outer press product 9 is slightly folded back, and as shown in FIG. The inner reinforcement 2G is sandwiched between the crimping part of the product 8 and the inner brace product 8.It may be a material, etc., but the point is to form the molding part and form a protruding part on the side. Any material may be used as long as it has a flat surface portion for a sealing surface formed thereon.

In this way, good sealing performance is guaranteed when joining other parts. The functions of the hemming member of the present invention are as follows:
For more clarity, let me explain some examples of internal usage.

7 and 8, the roof panel 27 is shown at the joint between the roof panel 27 and the roof panel 28.
The protruding hemmink member of the present invention is applied to the side.

As shown in FIG. 8, by forming the edge of the roof panel 2 into a shaped hemming member, the roughness of the hemming part is significantly increased (compared to the conventional one). The sealing surface 30 of the seal material 29 interposed between the hemming section and the hemming section can be used as the outer surface of the hemming section, eliminating the need for the conventional extension on the lean-through 7 panel 28 side as shown in FIG. Since the sealing surface 30 on the side of the hemming portion is formed as a flat surface, sufficient adhesion of the sealing material 29 and the like is possible, and good sealing performance can be obtained.

Furthermore, since the sealing material 29 is interposed between the ends of the roof panel 27 and the roof panel 28, grooves where water tends to accumulate as shown in FIG. 1 are not formed, and good sealing performance is achieved. It will be more helpful. Furthermore, since the extension part extending to the lower side of the roof panel 27 of the conventional lin roof panel 2 8 f!! The sunroof panel 28 can be opened directly upward, and the operation for opening the sunroof panel 28 is greatly simplified.

(as explained above), the shaped hemming part of the present invention. )4
And when using the manufacturing equipment, the structure of the hemming part to be processed is made into the shape, the thickness of the hemming part in the plate thickness direction is set as 1, and the outer surface of the protruding hemming part has a sufficient length as a sealing surface. Since the hemming member is formed with a flat surface, it is possible to obtain good sealing performance without special efforts in joining the hemming member to other members.

Moreover, if the hemming member of the present invention is applied to the joint between the sunroof panel and the roof panel, good sealing performance can be obtained, and the sunroof panel can also be opened directly upward.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional hemming member, FIG. 2 is a side view of a protruding hemming member manufacturing apparatus according to an embodiment of the present invention, and FIG. 3 is a partial side view of the apparatus shown in FIG. , MS4 figure is a side view showing the processing order of hemming processing in the R position of figure ff12, FIG. 5 is a side view of the hemming part showing an application example of the hemming member of the present invention, and FIG. 6 is a side view of the hemming member of the present invention. Another example of application is a side view of the hemming part shown in FIG. 7, a PI view of the area around the sunroof panel of a vehicle, and FIG. 8 a cross-sectional view of the device shown in FIG. 7・・・・・・・・・Lower mold 8・・・・・・・・・Inner press product 9・・・・・・・・・Outer press product 11・・・・・・・・・° mold 13 ......Guide part 14...Hemming blade 15...Movement bracket 1-1G...
...Guide 17...Cylinder 19...Hemming blade upper end opening 20...
...Flat surface portion 21 of the upper end surface of the hemming blade...
... Hemming blade top *: Slope part 22 on one side...
......S1-Brim 23...Folded end 24 of inner bracelet product...Folded end 25 of outer bracelet product...・Flat part 2 on the outside surface of the hemming part
7...Roof panel 28...Zan roof panel 29...
... Sealing material 30 ... Seal surface Fig. 11 Fig. 2 Fig. 3

Claims (3)

[Claims] (1) Hemming in which the end of the outer press product for vehicles is folded back so that the end of the inner press product is not held between the outer press product (in J1 construction, the end of the inch press product is bent at right angles in advance, and the end of the outer press product is 1t that wraps the hemming part around the bent end of the inner press product.
(ii) A protruding hemming member characterized in that it is formed into a bag shape inflated in the thickness direction, and a flat part extending in the thickness direction is formed on the outer surface of the bag-shaped hemming part of the outer press product. (2) The protruding hemming member according to claim 1, wherein the protruding hemming member U comprises a joint portion of a roof panel of an automobile with a sunroof panel. (3) An inch press product with a bent end and a lower mold that supports an outer press product stacked on the inch press product, press and hold the press product from above, and bend the end of the outer press product to the bent end of the inner press product. 2) An upper die that is bent downward at 0°C, and an upper die that is installed on the side of the lower die, further folds the bent end of the outer press article and presses the outer press article from diagonally below so as to form a pressure bonding layer on the lower surface of the inch press article. A device for manufacturing a protruding hemming member, comprising a hemming blade that moves toward a bent end.