JP2000247143A - Automotive light-shielding panel and method of manufacturing the same - Google Patents

Abstract

(57) [abstract] (with correction) [Problem to be Solved]
An object of the present invention is to provide an automotive light-shielding panel having a high strength over the entire surface and a method of manufacturing the same. SOLUTION: The automotive light-shielding panel according to the present invention is cut from a roll-bonded base plate having at least two or more panels formed into a single-sided expanded tube to obtain each panel having a pattern portion over substantially the entire surface. This is an automotive light-shielding panel having a two-dimensional or three-dimensional curved surface formed by crushing a peripheral inflated tube portion with a press to form an automotive light-shielding panel. As a method of manufacturing these automotive light-shielding panels, at least two or more panels of a roll-bonded base plate are integrally single-sided expanded over the entire central portion except for the base plate peripheral portion,
A plurality of panels are uncovered from the central bulging part to obtain each panel part whose entire surface forms a single-sided bulging part. After crushing the surrounding bulging part with a press, two-dimensional or three-dimensional bending is further formed And end bending.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-strength automotive light-shielding panel comprising a roll bond panel having a two-dimensional or three-dimensional curved surface conforming to a curved curved surface of an automobile roof, and to provide a high-efficiency light-shielding panel for a vehicle with good yield. The present invention relates to a method for manufacturing a semiconductor device.

[0002]

2. Description of the Related Art Heretofore, it has been necessary to use a bent panel having a large radius of curvature as a light shielding panel on the indoor side of a sunroof for an automobile. Therefore, these bent panels having a large radius of curvature have assembled a press body formed by press working using a die and a reinforcing material such as a rib by joining means such as spot welding, riveting, and bonding. In general, thermosetting resin, steel plate, and aluminum plate are used as materials for automotive light-shielding panels. However, aluminum plate (including aluminum alloy plate) has attracted attention because of its light weight and high recyclability. Has become.

On the other hand, so-called roll bond panels (trade names) are known for applications such as various evaporators, panel heat exchangers, and solar heat collecting plates. The roll bond panel is formed by using two aluminum plates or the like, and screen-printing and rolling a pressure-resistant material ink on portions where a pattern is to be formed in advance to form a predetermined pattern on a surface to be bonded, thereby preventing the pressure-bonding. The printed material is used as a pass circuit pattern, and is used by flowing a fluid such as a refrigerant and water through the pass circuit.

Recently, as a light shielding panel for automobiles,
The use of aluminum roll bond panel materials has been proposed and many applications have been filed. If a roll bond panel material made of aluminum is used as a light-shielding panel for an automobile, the expanded tube portion forming the pass circuit acts as a reinforcing rib, improving strength and eliminating the need for a conventional reinforcing rib. A two- or three-dimensionally bent panel material having a relatively large radius of curvature of the ceiling is obtained without springback.

Conventionally, when a light shielding panel 1 for an automobile as shown in FIG. 2 is formed using a single-sided inflatable panel, these light shielding panels 1 for an automobile are formed as shown in FIG. A plurality of base plates 2 are taken out. Normal,
As for the light shielding panel for automobiles, it was necessary to separately manufacture manifolds for molding each panel material corresponding to the order use of many models according to each model, and to cut them out from one original plate 2 respectively. . FIG. 3 shows a case where six light shielding panels 1 are formed from one original plate 2. Although the example shown in FIG. 3 shows a case where six panel materials 1 having the same shape are cut out, each panel may be a discrete panel having different dimensions corresponding to different vehicle types. In FIG. 3, conventionally, each pattern on each light-shielding panel 1 is formed by printing an anti-compression material in advance, and each path circuit pattern of each light-shielding panel is expanded. A compressed air inlet 3 for inflating the circuit pattern and an air pipe passage 4 for inflating the compressed air into each of the compressed air inlets 3 must be provided. It could not contribute to the reduction of the production cost of the inflatable roll bond panel. Further, since the original plate 2 is subjected to a heat treatment such as annealing after printing the circuit pattern and is simply rolled, the strength of the expanded portion is improved by work hardening, but the strength of the non-expanded portion in the peripheral portion is improved. Weak and had problems.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light-shielding panel for an automobile having a high yield and a high strength over the entire surface by using a single-sided inflatable panel, and a method of manufacturing the same.

[0007]

That is, the light-shielding panel for an automobile according to the present invention is cut from a roll-bonded base plate having at least two or more panels formed into a single-sided expanded tube, and a pattern portion is formed on almost the entire surface. An automotive light-shielding panel having a two-dimensional or three-dimensional curved surface formed by squeezing a peripheral expanded tube portion of each of the panels with a press to form an automotive light-shielding panel, thereby solving the above-mentioned problem. In the present invention, each panel may be formed of an independent inflated tube portion without forming a path circuit in which a central portion pattern excluding its peripheral portion communicates, and those patterns may be straight type, grit type, dimple type, etc. It can be. Further, a cloth may be attached to the flat side surface of each panel. As a method of manufacturing these automotive light-shielding panels, a roll-bonded base plate on which at least two or more panels are molded is integrally single-side-pipe-extruded over the entire central portion excluding the peripheral edge of the base plate, and the central-portion bulged plate is formed. A plurality of panel parts are uncovered from the part to obtain each panel part whose entire surface forms a one-sided inflatable part, and after the surrounding inflatable part is crushed by pressing, further two-dimensional or three-dimensional bending formation and end bending It is obtained by processing.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In general, a one-sided inflatable roll-bonded panel generally comprises two plates as shown in FIGS. 4 (a) to 4 (d) and has a hollow portion inside the plate. . These single-sided inflatable roll bond panels are manufactured by known means. That is, two aluminum plates 5, 5
Chemically removes harmful oils, dirt, and the like on the plate surface, and further mechanically removes an oxide film by wire brushing to expose a fresh surface (FIG. 4 (a)). Then, an anti-compression agent is applied to at least one surface of one of the aluminum plates in a predetermined pattern according to the portion where the reinforcing rib is to be formed (FIG. 4B). In general, an ink containing 1 μm or less of colloidal graphite as a main component is used as the anti-compression agent, and its application is usually performed by printing means. Next, the two aluminum plates are overlapped with each other with the application surface of the anti-pressure-bonding agent inside, and hot-rolled by a rolling roll under conditions where a good pressure-bonding strength is obtained. It is firmly pressed and integrated (Fig. 4 (c)). Then, if necessary, after performing cold rolling and annealing, a pressure fluid such as compressed air is introduced from one peripheral portion to the non-press-bonded portion where the anti-pressing agent is interposed, and the pattern portion is expanded. To produce a roll bond panel base plate 2 having a hollow portion inside (FIG. 4D). The above-mentioned inflated tube is formed so as not to cause swelling on the plate surface on the outer surface side of the panel, and is expanded only on one inner surface side to form a reinforcing rib having a predetermined height and a sectional shape. That is, the process is performed using a one-sided inflatable tube technique. In the production of the roll bond panel, in order to perform the one-sided inflatable tube while maintaining good flatness on the other side, the aluminum plate used on the outer side is made of a heat-treated aluminum alloy or a material on the inner side. It is preferable to use an alloy having a high recrystallization temperature.

As the metal material used for the hollow panel in the present invention, copper, aluminum or the like can be used. When an aluminum material is used, the hardness of the hollow panel is O material or semi-hard. Hereinafter, the present invention will be described with reference to a hollow panel made of aluminum. However, it is needless to say that a copper panel may be used, and that a base plate of each panel in the present invention takes at least two or more panels. .

FIGS. 1A and 1B show an embodiment of a light shielding panel for an automobile according to the present invention, wherein FIG. 1A is a schematic front view, and FIG. 1B is an explanatory sectional view taken along line AA of FIG. , (C)
FIG. 4 is an explanatory cross-sectional view taken along line BB in FIG. FIG.
In the figure, 1 is a light shielding panel for an automobile, 5 is an inflated tube portion, 6 is a non-expanded tube portion, 7 is an edge bent portion provided on both side end portions thereof, and 6 ′ is a crushed inflated tube portion around the panel. It is a peripheral part. Further, a coating material 8 such as cloth may be provided on the lower surface of the inflated tube surface, usually on the flat surface side on the inside of the vehicle. In addition, the edge bending portion 7 is necessary for safety because it has the effect of increasing the rigidity of the plate and prevents injuries and the like due to the cut surface of the plate. Also, by bending the edge bent portion 7 into a concave or U-shaped cross section, the curved central portion floats from the edge, and when the light-shielding panel is pulled out from the storage portion, the central portion is separated from the interior material. It is possible to prevent the generation of static electricity due to friction and adhesion of dust and the like, thereby causing contamination. Although the edge bending portion 7 has the same shape on both sides as shown in the drawing, the edge bending portion 7 may have different shapes on both sides. In the figure, reference numeral 9 denotes a knob hole for drawing out the panel.

[0011] Two or more sheets of such a light shielding panel 1 for an automobile are taken from a base plate 2 'as shown in FIG. In the base plate 2 'used in the present invention, the entire base plate 2' is simply provided with one compressed air inlet 3 'without providing an air pipe for inflating each panel individually using a manifold. Thus, the need for the air pipe passage 4 for expanding the pipe in the original plate is eliminated. Therefore, it is possible to inflate the tube just to the end of the base plate 2 ', and the yield is greatly improved.

In the present invention, the single-sided expanded roll bond panel does not allow a fluid such as a refrigerant to flow through the pattern as in the prior art. Therefore, the pattern must be a communication path circuit forming a conventional closed circuit. There is no, but the pattern simply forms a reinforcement for improving the strength. Therefore, the inflatable tube portion and the non-inflatable tube portion can be made independent of each other, and may be in communication with the outer peripheral portion in the vicinity of the peripheral portion of the panel, and the peripheral portion can be easily press-formed. Also,
Since the inflatable tube portion and the non-inflatable tube portion can be made independent of each other, the pattern can be arbitrarily designed in advance when the original plate is inflated so as to have a strength or a pattern that can be easily formed. In the present invention, considering the subsequent steps,
As a pattern to be formed on the base plate, a straight type as shown in FIG. 5 exemplified above, a grid type as shown in FIG. 6, and a dimple type as shown in FIG. 7 are prepared as typical patterns. , By pre-expanding this on the original plate on one side, cut into each panel,
By making the pattern of the light-shielding panel material for an automobile obtained through each step have the respective patterns as shown in FIGS. 5 to 7, standardization can be easily performed, leading to cost reduction. These patterns are not limited to those shown,
Although it may be an appropriate one, it is determined in consideration of design strength, such as the number of sheets cut from the original plate and the size of each pattern, or the area of the non-expanded tube portion per area when a panel material is used. Preferably, the pattern has a regularity such that a repeated pattern having a uniform intensity distribution is formed.

As shown in FIGS. 5 to 7, a plurality of panel members are cut from the expanded tube portion of the original plate 2 'after the expansion. Therefore, the cut panel material has a work-hardened expanded surface at the time of inflation, and the automobile light-shielding panel is uncovered from each of these expanded materials, and at the same time, the peripheral inflated portion is crushed by pressing. The strength of the portion 6 'is not simply annealed, but has a high strength, and at the same time, a knob hole 9 for extracting the panel is formed in the peripheral portion 6'. Next, urethane is applied to the surfaces of the metal roll 10 and the resin roll 11 as shown in FIG.
Bending is performed in the circumferential direction (Y-Y axis) of the roll by a twin roll made of an elastic roll coated with 12 or the like, and then edge bending of the side edges of the light shielding panel materials for automobiles is performed by press forming or roll forming. Or roll-forming a rolled-up panel by subjecting each car's light-shielding panel material to edge bending by press-forming or roll-forming each car's light-shielding panel material, and then using a twin roll consisting of a rigid / elastic roll. Circumferential direction (Y-Y axis)
For automobiles that are bent into a two-dimensional or three-dimensional shape by bending to a two-dimensional or three-dimensional shape that matches the shape of the ceiling of the vehicle to be mounted The light shielding panel 1 is formed. In the case of using a metal / resin roll as an example of rigidity / elasticity as a twin roll,
By using the crown rolls 10 'and 11' having a curvature on the roll forming surface as shown in FIG.
The shaft can also be bent, thereby obtaining a light shielding panel for an automobile in which the central portion is bent three-dimensionally. Normally, the radius of curvature R of the roll in the axial direction (XX axis) is 2000 mm or more. When used as a light-shielding panel, the panel has a width of about 300 to 1000 mm and a length of about 600 to 1000 mm.

In the present invention, since each panel material is cut out from the base plate that is integrally expanded, the entire surface of the panel material is work-hardened when the base plate is expanded, and the strength is sufficiently improved. There is no worry about improving the strength of the entire panel material.

[0015]

EXAMPLE An aluminum plate (1050) having a thickness of 2.0 mm and an aluminum material (3003) having a thickness of 2.0 mm used on the outer surface side were coated with an anti-pressing agent on the surfaces to be joined, and the coated surface was formed. The two aluminum plates were overlapped on the inside, and hot-rolled at a recrystallization temperature or higher, specifically 500 ° C., at a compression ratio of 60%. Then, cold-rolled to a final thickness of 1.0 mm, 3
After annealing at 50 ° C. for 30 minutes and leveler correction, an appropriate cloth upholstery was applied to the flat surface side. Next, a pressurized fluid such as compressed air is introduced from a compressed air pressure inlet 3 provided at one location on the periphery to the non-pressed portion where the anti-pressing agent is interposed, and the pattern portion is expanded to form a hollow portion inside. As shown in FIG. 7, a single-sided roll bond panel base plate 2 'having a width of 2125 mm and a length of 850 mm having a regular and uniform pattern as shown in FIG. The above-mentioned bulging tube prevents the bulging of the plate surface on the outer surface side of the panel, and bulges only on one inner surface side to form a reinforcing rib having a predetermined height and a sectional shape. That is, the process is performed using a one-sided inflatable tube technique.

Six panel materials of 627.4 mm in width and 156.5 mm in length were cut from the central bulging portion of the base plate 2 'obtained as shown in FIG. Next, after the shape was removed, the periphery of each panel material was crushed by pressing a 10 mm circumference to form a peripheral portion 6 ′, and a knob hole 9 was formed at the same time. Thereafter, three-dimensional bending was performed using twin rolls 10 ′ and 11 ′ composed of crown rolls shown in FIG. 9 so as to have a curved surface matching the curved surface of the applied automobile ceiling. Next, the light-shielding panel 1 for automobiles was obtained by bending the end face by press molding.

FIG. 10 is a schematic explanatory view showing a case where six panel members are cut from the base plate 2 'used in the present invention. FIG. 10 shows a compressed air introduction port and an air pipe passage for an inflating pipe in each panel member according to a conventional method. FIG. 11 shows a schematic explanatory view when six panel materials having the same dimensions as above are cut from a separately provided base plate 2.
It is evident that the theoretical yield of the product of the present invention is significantly improved as compared with the conventional product. Further, according to the present invention, not only the air pipe passage 4 can be omitted around each panel, but also the interval between each panel can be suppressed to about 5 mm. Less is good.

[0018]

As described above, according to the present invention, the product yield can be increased drastically when compared comprehensively with those obtained by the conventional method, and the roll bond is problematic in terms of product cost. The use of the panel as a strength member becomes more realistic, and an inexpensive and high-strength automotive light-shielding panel is obtained.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an automotive light-shielding panel according to the present invention, in which (a) is a plan view, (b) is an A-A sectional explanatory view of (a), and (c) is (a). It is BB sectional drawing of FIG.

FIG. 2 is a schematic explanatory view of a conventional light shielding panel for an automobile.

FIG. 3 is a schematic diagram for explaining a base plate for obtaining the automotive light-shielding panel shown in FIG. 2 and a cut state thereof.

FIG. 4 is an explanatory view showing an example of manufacturing a light shielding panel for an automobile by using a roll bonding method.

FIG. 5 is a plan view showing a straight type base plate as an example of a base plate for manufacturing the light shielding panel for an automobile according to the present invention.

FIG. 6 is a plan view showing a grid type base plate as an example of a base plate for manufacturing the light shielding panel for an automobile according to the present invention.

FIG. 7 is a plan view showing a dimple type base plate as an example of a base plate for manufacturing the light shielding panel for an automobile according to the present invention.

FIG. 8 is an explanatory diagram of a twin roll used for two-dimensional bending in the present invention.

FIG. 9 is an explanatory diagram of a twin roll using a crown roll used for three-dimensional bending in the present invention.

FIG. 10 is an explanatory diagram in a case where each panel is cut out from a base plate 2 ′ in the present invention.

FIG. 11 is an explanatory diagram of a case where each panel is cut out from a base plate 2 in a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 light shielding panel for automobile 2 base plate 2 ′ base plate 3 compressed air inlet 4 air pipe passage for inflatable tube 5 inflatable tube 6 non-expandable tube 6 ′ peripheral portion 7 edge bent portion 8 covering material 9 knob hole for drawing out 10, 10 'Metal roll 11, 11' Resin roll 12 Urethane rubber surface 13 Elongation allowance

Claims (7)

[Claims] At least two or more panels are cut from a roll-bonded base plate having a single-sided expansion formed into a single-sided tube, and a peripheral expanded tube portion of each panel having a pattern portion on substantially the entire surface is crushed by a press to be used for automobiles. An automotive light-shielding panel having a two-dimensional or three-dimensional curved surface formed on the light-shielding panel. 2. The light-shielding panel for an automobile according to claim 1, wherein each of the panels is formed of an independent bulging portion without forming a path circuit in which a central pattern excluding a peripheral portion thereof communicates. 3. A light shielding panel for an automobile according to claim 2, wherein said pattern is of a straight type. 4. The light-shielding panel for an automobile according to claim 2, wherein the pattern is of a grit type. 5. The light-shielding panel for an automobile according to claim 2, wherein the pattern is of a dimple type. 6. The light-shielding panel for an automobile according to claim 1, wherein a cloth is attached to a flat side surface of the panel. 7. A roll-bonded base plate on which at least two or more panels are formed, the entire central portion excluding the peripheral portion of the base plate is integrally single-sided expanded, and a plurality of panel portions are formed from the central expanded portion. To obtain each panel part whose entire surface forms a one-sided expanded tube part, crush the peripheral expanded tube part with a press, and then perform two-dimensional or three-dimensional bending formation and end bending processing for automobiles A method of manufacturing a light shielding panel.