JPH09208240A - Head light lens forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight and the assembly cost of a head light lens and expand the width of the degree of freedom in the design of this head light lens by omitting mounting means by flanges. SOLUTION: This head light lens forming device has a female die 2 which houses fused glass B, a ring die 4 which overlaps on the upper mouth edge of this female die 2 in tight contact therewith in order to form the peripheral edge of the aperture of the head lamp leans and a male die 6 which is fitted into the hollow part of the ring die 4 in tight contact therewith and presses the fused glass B by descending down to the inner side of the female die 2. On such a case, the ring die 4 is provided with a submersible piece 23 which moves into and out of the inner side linked with the lifting of the male die 6 and forms a detaining part A3 at the peripheral edge of the aperture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlight lens forming apparatus for forming a glass headlight lens for an automobile.

[0002]

2. Description of the Related Art Conventionally, a glass headlight lens for an automobile has a female mold for receiving molten glass, a ring mold for closely superimposing on the upper edge of the female mold, and a hollow mold for the ring mold and a female mold for closely fitting the female mold. It is formed by pressing molten glass with a male mold that descends inside the mold, and is generally a vessel-shaped one in which a flange is provided all around the opening. Such a lens,
This is a component that can be assembled to the vehicle body after attaching the mounting bracket to the flange part, and unlike plastic, it is indispensable to use the flange part as a mounting means in the glass headlight lens where it is difficult to mold complex shapes such as screw holes It has become.

[0003]

However, in the lens as described above, the flange portion to which a load is applied at the time of mounting is formed thicker and considerably larger than the lens portion, and therefore the entire lens is made heavy. ing.

Further, in designing, the molding of the flange portion must always be taken into consideration, so that the degree of freedom in designing the headlight lens is limited.

Further, the above-mentioned mounting of the flange portion and the mounting bracket is carried out by an automatic assembly machine in actual assembly, and the mounting cost of the headlamp lens is reduced by the mounting step of the mounting assembly by this automatic assembly machine. It was more expensive than the plastic one.

That is, the glass headlight lens is superior to the plastic lens in terms of high quality and durability, but is inferior to the plastic lens in these points.

The present invention has been made in view of the above-mentioned problems and the like, and reduces the weight of the headlight lens, reduces the assembly cost, and widens the degree of freedom in designing the headlight lens. It is an object of the present invention to provide a headlight lens molding device that can be used.

[0008]

DISCLOSURE OF THE INVENTION The present invention, however, includes a female die for receiving molten glass, and a ring die for closely polymerizing with the upper edge of the female die to form the peripheral edge of the opening of the headlight lens.
In a headlamp lens forming apparatus having a male mold that closely fits in a hollow part of the ring mold and descends inside the female mold to press molten glass, the ring mold is internally linked in association with the elevation of the male mold. The above-mentioned problem is solved by providing a projecting and retracting piece for projecting and retracting and forming a hooking portion on the periphery of the opening.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described below with reference to the drawings. That is, reference numeral 1 shown in the figure
Is a headlamp lens molding apparatus that press-molds a rectangular vessel-shaped headlamp lens A as shown in FIG. 6, and this headlamp lens molding apparatus 1 defines the outer surface shape of the headlamp lens A. A female mold 2 in which a rectangular recess 3 to be molded is arranged upward,
A ring mold 4 that closely overlaps the upper edge of the recess 3 of the female mold 2 to form the opening peripheral edge A1 of the headlight lens A, and a recess 3 of the female mold 2 that is closely fitted to the hollow portion 5 of the ring mold 4. It has a male die 6 that descends inward and presses the molten glass B supplied to the female die 2.

The male mold 6 has a rectangular male main body 7 for molding the inner surface of the lens A corresponding to the convex portion corresponding to the concave portion 3 of the female mold 2, and a hydraulic cylinder 9 at the upper portion of the male main body 7. The male die 6 is connected to the piston 10, and the male die 6 is connected to the piston 10 and is arranged right above the female die 2 so that the male die 6 is connected to the ring die 4 and the female die 2 by the hydraulic cylinder 9. It is vertically moved up and down.

At the boundary between the male main body 7 and the male base 8, a sharpening plate 11 is horizontally provided in a state of overhanging in the lateral direction of the male main body 7, and at both ends of the sharpening plate 11. Is provided with the guide pin 12 in a suspended state.

At the upper portion of the connecting portion 13 of the piston 10 with the male base portion 8, the insertion hole 1 is formed in a rectangular shape near the four corners.
A suspension plate 14 having a hole 5 is horizontally fixed. The suspension plate 14 is for suspending a suspended plate 16 to which the ring type 4 is attached below the male mold 6, and a suspension rod fixed in a standing state near the four corners of the suspended plate 16. The suspended plate 16 is suspended by inserting the upper end of 17 into the insertion hole 15 and attaching the nut 18 to the tip thereof.

The suspended plate 16 has a through hole 19 through which the guide pin 12 can be inserted just below the guide pin 12 of the sill plate 11, and a male main body 7 immediately below the male mold 6. Has an insertion hole 20 that allows loose insertion,
The ring die 4 is installed on the lower surface of the suspended plate 16 so that the hollow portion 5 is directly below the male body 7.

Reference numeral 21 is a spring that is mounted on the suspension rod 17, and this spring 21 always urges the suspension plate 14 and the suspended plate 16 in the direction of separating them from each other, and when the male die 6 descends. The pressing force is adjusted appropriately.

Thus, the headlamp lens molding device 1
When the piston 10 of the hydraulic cylinder 9 descends,
First, the ring mold 4 installed on the suspended plate 16 is closely polymerized with the upper edge of the female mold 2, and when the suspension plate 14 descends, the suspension rod 17 projects upward from the insertion hole 15 of the suspension plate 14. Meanwhile, the spring 21 is crushed between the suspension plate 14 and the suspended plate 16, and the male body 7 is closely fitted inside the hollow portion 5 of the ring die 4 and reaches the pressing position inside the female die 2. .

When the male die 6 descends, the ring die 4 closes the gap between the upper edge of the female die 2 and the outer peripheral surface of the male die 6, and flows out from between the male die 6 and the female die 2 by pressing. The molten glass B is guided to form the opening peripheral edge A1 of the headlamp lens A, and the hollow portion 5 of the ring mold 4 guides this when the male body 7 descends. The introduction portion 5a formed to be slightly larger than the outer diameter and the fitting portion 5 formed to have substantially the same outer diameter as the male main body 7 so as to be in close contact with the outer peripheral surface of the male main body 7.
b, and a molding portion 5c formed by expanding the inner diameter from the fitting portion 5b of a predetermined wall thickness of the opening peripheral edge A1 for guiding the molten glass B and molding the opening peripheral edge A1 of the headlight lens A. It consists of. The ring mold 4 of this embodiment is a female mold 2.
The peripheral edge A1 of the opening is formed to be narrower than the outer peripheral surface A2 of the lens A formed by the molding. Therefore, the molding portion 5c is formed on the male body 7 more than the upper edge of the concave portion 3 of the female die 2. The female mold 2 is polymerized at a position close to the outer peripheral surface.

On the lower surface of the ring mold 4, there is provided a groove portion 22 penetrating from the molding portion 5c to the outer surface in the horizontal direction. In this groove portion 22, the projecting and retracting piece 23 is in close contact with the inner surface, and
It is fitted so that it can slide in the penetrating direction. Haunting piece 23
Is provided with a frame base 24 that is thicker than the projecting / retracting frame 23 on the outer side in the fitted state, and the hooking portion of the headlight lens A is provided at the end on the inner side (see FIG. 6). It is provided with a top forming unit 25 for forming A3. The piece forming unit 25 is
On the peripheral surface A1 of the opening of the lens A, a hook-shaped engaging portion A3 having a substantially triangular cross section is formed. For this reason, a groove 26 having a substantially triangular side surface is formed in the width direction on the tip end surface.

The projecting and retracting piece 23 is slid outward in the groove 22 as shown in FIGS. 1 and 3 except when the male die 6 is lowered, and the sliding is performed outside the piece base 24 and the ring die 4. It is made by a pushing spring 27 provided between the side surface and the side surface. That is, the push-in spring 27 embedded in the hole 28 provided on the outer side surface of the ring die 4 abuts on the top base 24 and the retractable top 23 is slid outward by the force for biasing the base 24. .

When the male die 6 descends, the retractable top 23 slides inward until the tip surface of the top forming portion 25 is aligned with the forming portion 5a of the ring die 4 as shown in FIGS. The sliding is performed by the guide pin 12 provided on the shroud plate 11 and the guide hole 29 opened in the frame base portion 24. Diameter of guide pin 12 and guide hole 29
The inner diameter of the guide pin 29 is substantially the same as the inner diameter of the guide pin 29.
It is located at a position shifted to the outside by an appropriate dimension of 2. On the other hand, the guide pin 12 has a guide portion 12a that is cut off obliquely from the male die 6 side of the outer peripheral surface toward the tip, and the tip portion 12
b is formed so thin that it can enter the guide hole 29 when it is vertically lowered with the frame base 24 sliding outward, and when the guide pin 12 descends together with the male die 6, the tip end is first formed. When the guide portion 12a enters the guide hole 29 and then the guide portion 12a slides into the ring-shaped side of the upper edge of the guide hole 29 and reaches the upper portion of the guide portion 12a, the force exceeds the urging force of the pushing spring 27. Thus, the top base 24 and the retractable top 23 are slid inward.

That is, the projecting and retracting piece 23 is slid inward immediately before the male die 6 is lowered to the press position in the female die 2, and the molten glass B is introduced into the groove 26 of the piece forming portion 25.
When the guide pin 12 rises together with the male die 6, it is slid outward by the urging force of the push spring 27, and the moving dimension from the inner sliding position to the outer sliding position is molded by the top molding portion 25. The hooking portion A3 is set to be larger than at least the depth of the groove 26 of the top forming portion 25 so that the hooking portion A3 can be pulled out without being caught by the top forming portion 25 when the ring die 4 is raised.

Further, a supporting rod 30 is provided in the groove portion 22 of the ring type 4 so as to extend in the width direction, and the supporting rod 30 is larger than the supporting rod 30 in the width direction on the lower surface of the projecting and retracting piece 23. By engaging with the engaging groove 31 formed by the width, the protruding / withdrawing piece 23 is supported in the groove portion 22 of the ring type 4, and the sliding position of the protruding / withdrawing piece 23 is controlled and determined.

According to the headlamp lens molding apparatus 1 of the above embodiment, however, the ring die 4 and the retractable top 23 project outwardly onto the peripheral edge A1 of the opening, which is narrower than the outer peripheral surface A2 of the lens. Since it is possible to form the hanging portion A3, it is possible to assemble the engaging portion A3 into the fitting hole 33 of the headlamp frame member 32 as shown in FIG. It is possible to implement the method of fitting by the concavo-convex, which is used only for the lens mounting means, in the headlight lens A made of glass.

Further, in the above embodiment, the groove 26 is formed in the top molding portion 25 to form the hook portion A3 protruding outward from the peripheral edge A1 of the lens opening portion, but the present invention is not limited to this. On the contrary, the molding shape of the hooking portion A3 can be arbitrarily set, for example, by forming a convex portion on the top molding portion 25 and forming a recess or a hole on the peripheral edge A1 of the lens opening.

[0024]

According to the present invention, the female die 2 that receives the molten glass B and the ring die 4 that closely overlaps with the upper edge of the female die 2 to form the opening peripheral edge A1 of the headlight lens A are formed. In the headlamp lens molding apparatus 1 having a male mold 6 that closely fits into the hollow portion of the ring mold 4 and that descends inside the female mold 2 and presses the molten glass B, the ring mold 4 has a male mold. 6
Since a retractable piece 23 that protrudes and retracts inwardly in association with the elevation of the upper and lower parts and that forms the retaining portion A3 is provided on the opening peripheral edge A1, the headlight lens A is attached to the vehicle body side using the retaining portion A3. Became possible.

Therefore, unlike the conventional headlight lens, no mounting bracket is required, and an automatic assembling machine for mounting the mounting bracket on the flange portion is not required, so that the cost can be kept low.

Further, since it is not necessary to provide the headlamp lens with a flange portion, the headlamp lens can be considerably reduced in weight, and the weak point in the case of being compared with a plastic lens characterized by lightness can be compensated.

Further, in the design of the headlight lens, the flange portion can be omitted, so that the headlamp lens can be freely designed, so that a wider variety of products can be manufactured than ever before.

As described above, according to the present invention, although made of glass, it is excellent in terms of high quality and durability, but inferior in terms of cost, weight and design inconvenience, compared to plastics. By compensating for its weakness with the headlight lens, it became possible to adopt it without hesitation in various cars from high-class cars to economy cars.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a state before press molding of a headlamp lens molding apparatus according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a state of the headlight lens molding apparatus during press molding.

FIG. 3 is a cross-sectional view of essential parts showing a state of the headlamp lens molding device before press molding.

FIG. 4 is a cross-sectional view of essential parts showing a state of the headlamp lens molding device during press molding.

FIG. 5 is a perspective view showing a state in which a projecting and retracting piece is fitted in a ring-shaped groove portion.

FIG. 6 is a perspective view of a headlight lens molded by the headlight lens molding apparatus of the embodiment.

FIG. 7 is an exploded perspective view showing a fitted state of the molded headlight lens on the vehicle body side.

[Explanation of symbols]

1 Lens molding device 2 Female mold
3 Recessed portion 4 Ring type 5 Hollow portion
5a Introductory part 5b Fitting part 5c Molding part
6 Male 7 Male main body 8 Male base
9 Hydraulic cylinder 10 Piston 11 Slab
12 Guide pin 12a Guide part 12b Tip part
13 connection part 14 suspension plate 15 insertion hole
16 Suspended plate 17 Suspended rod 18 Nut
19 through hole 20 through hole 21 spring
22 Groove part 23 Haunting piece 24 Frame piece base
25 Top forming part 26 Groove 27 Pushing spring
28 hole 29 guide hole 30 support rod
31 Engagement Groove 32 Headlight Frame Member 33 Fitting Hole A Headlight Lens A1 Opening Edge Perimeter
A2 Outer peripheral surface A3 Hooking part B Molten glass

Claims (1)

[Claims] 1. A female die for receiving molten glass, a ring die for closely superimposing on the upper edge of the female die to form the peripheral edge of the opening of the headlight lens, and a close fit in the hollow portion of the ring die. In a headlamp lens forming apparatus having a male mold that descends inside the female mold and presses the molten glass, the ring mold appears and disappears inwardly as the male mold moves up and down, and a hooking portion is provided around the opening. A headlight lens molding device, which is provided with a projecting and retracting piece for molding.