JP3149267B2 - Mold for roof mirror array molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for molding a roof mirror array, and more particularly, to a roof used in a 1: 1 image forming element used in an optical apparatus for reading and writing a copying machine, a facsimile, and the like. The present invention relates to a roof mirror array molding die for manufacturing a mirror array.

[0002]

2. Description of the Related Art In a roof mirror array, light emitted from a light source and then reflected by a document are irradiated through a lens array and an aperture plate. As shown in FIG. Are formed with a plurality of roof mirror surfaces 1a. Conventionally, as a roof mirror array molding die for manufacturing this type of roof mirror array, there is, for example, one described in Japanese Patent Application Laid-Open No. 60-58827, which is shown in FIG. . FIG.
In the figure, 2 is a mold for molding a roof mirror array,
The mold 2 has a roof mirror forming surface 3a corresponding to the shape of the roof mirror surface 1a. And a mold base 4 for supporting a plurality of mold pieces on the inner peripheral surface.
And, it consists of.

[0003] The mold piece 3 is incorporated in a built-in groove 4a formed in the inner peripheral surface of the mold base 4, and the mold piece 3 is provided on a bottom and side portions of the mold base 4. The bottom and side surfaces of the screw 5 are pressed down by the screws 5 to be positioned from the position shown by the broken line to the position shown by the solid line, and are accurately supported by the mold base 4. The above-described roof mirror array 1 is molded using the above-described roof mirror array molding die 2, and specifically, a movable die is arranged to face the die 2,
Molding is performed by injecting molten resin between the mold and the roof mirror molding surface 3a of the mold piece 3.

However, in the above-described mold 2, since the mold piece 3 is supported on the mold base 4 by the plurality of screws 5, the injection pressure during injection molding, the mold clamping of the mold 2, and The screw 5 was loosened by the impact at the time of opening the mold, and the mold piece 3 was displaced with respect to the mold base 4.
To solve such a problem, Japanese Patent Application Laid-Open No.
JP-A-48310 or JP-A-60-99618. This is achieved by inserting a plurality of mold pieces into the mold groove of the mold base, positioning the mold piece at the correct position, and then filling the gap between the mold base and the mold groove with an adhesive. The plurality of mold pieces are fixed to the mold base.

[0005]

However, in such a conventional mold for molding a roof mirror array,
After the mold pieces were inserted and positioned in the mold grooves of the mold base, the adhesive was filled, so the work of attaching the mold pieces was extremely large and cumbersome, and the work of attaching the mold pieces was difficult. There was a problem that workability deteriorated.

Accordingly, the invention according to the first to eighth aspects is for forming a roof mirror array which can easily attach a plurality of mold pieces to a mold base with a small number of man-hours and can improve the workability of the attaching work. The purpose is to provide molds.

[0007]

According to the first aspect of the present invention,
In order to solve the above problem, a roof mirror forming surface corresponding to the shape of the roof mirror surface is formed, a plurality of mold pieces arranged in a line in the longitudinal direction, and a plurality of mold pieces extending in the longitudinal direction together with the mold pieces. A mold base for supporting a plurality of mold pieces on the inner peripheral surface, and a mold for molding a roof mirror array, comprising:
A reference surface is provided on the inner peripheral surface of the mold base, and the reference surface is
The mold pieces are supported by the base mold by extending substantially parallel to the arrangement direction of the mold pieces, and a surface orthogonal to the longitudinal direction of the plurality of mold pieces is abutted against the reference surface. And

According to a second aspect of the present invention, in order to solve the above-mentioned problem, a pressing means for pressing a plurality of mold pieces against a reference surface is provided on an inner peripheral surface opposite to a reference surface of the base mold. It is characterized by having been. According to a third aspect of the present invention, in order to solve the above-mentioned problem, the pressing means is constituted by a screw screwed to a mold base.

According to a fourth aspect of the present invention, in order to solve the above problem, the pressing means is an elastic body interposed between a mold base and a plurality of mold pieces.
In order to solve the above-mentioned problem, the invention according to claim 5 is characterized in that the elastic body is formed of a leaf spring extending in the longitudinal direction together with a mold base. In order to solve the above-mentioned problem, the invention according to claim 6 is characterized in that the pressing means is made of a low-hardness metal material.

In order to solve the above-mentioned problems, the invention according to claim 7 is characterized in that the metal material is made of copper or aluminum. According to an eighth aspect of the present invention, in order to solve the above-described problem, a concave portion or a convex portion is provided on an inner peripheral surface of a mold base facing the reference surface, and a mold piece opposite to the mold piece facing the reference surface. The surface is provided with a convex portion or a concave portion, and the concave portion or the convex portion of the mold base is engaged with the convex portion or the concave portion of the mold piece.

[0011]

According to the first aspect of the present invention, the reference surface is provided on the inner peripheral surface of the mold base, and the reference surface extends substantially parallel to the arrangement direction of the mold pieces, and the longitudinal direction of the plurality of mold pieces. The mold piece is supported by the base mold by abutting a plane perpendicular to the reference plane with the reference plane.

Therefore, after the plurality of mold pieces are easily positioned on the mold base, they are attached to the mold base.
As a result, the plurality of mold pieces can be easily attached to the mold base with a small number of man-hours, and the workability of the attaching work is improved. According to the second aspect of the present invention, the pressing means for pressing the plurality of mold pieces against the reference surface is provided on the inner peripheral surface facing the reference surface of the base mold. Therefore, the plurality of mold pieces are preferentially abutted against the reference surface by the pressing means, and the plurality of mold pieces are attached to the mold base without adjustment. As a result, the workability of the work of attaching the mold pieces is further improved.

According to the third aspect of the present invention, the pressing means is formed of a screw screwed to the mold base. Therefore,
A plurality of mold pieces are attached by general-purpose parts, and the cost of the mold for molding the roof mirror array is reduced. In the invention according to claim 4, the pressing means is constituted by an elastic body interposed between the mold base and the plurality of mold pieces. Therefore, impacts such as mold clamping and injection pressure during the injection molding operation are absorbed by the elastic body, and the plurality of mold pieces are stably supported by the mold base.

According to the fifth aspect of the present invention, the pressing means is constituted by an elastic body, and the elastic body is constituted by a plate spring extending in the longitudinal direction together with the mold base. Therefore, the mold piece is abutted against the reference surface with one part, and the work of attaching and disassembling the mold piece to the mold base is easily performed. As a result, cleaning and maintenance work of the molding die are improved.

According to the sixth aspect of the present invention, the pressing means is made of a low-hardness metal material. Therefore, even if the metal material is deformed at the time of molding the molding die, the plurality of mold pieces are preferentially abutted against the reference surface by the metal material. As a result, the mold piece is stably attached to the mold base during molding. In the invention according to claim 7, the metal material constituting the pressing means is made of copper or aluminum. Therefore, the metal material is inexpensive, and the cost of the molding die is reduced.

According to the present invention, a concave portion or a convex portion is provided on the inner peripheral surface of the mold base facing the reference surface, and a convex portion or a convex portion is provided on the surface of the mold piece opposite the reference surface. A concave portion is provided, and the concave portion or the convex portion of the mold base is engaged with the convex portion or the concave portion of the mold piece. Therefore, the plurality of mold pieces and the mold base are fixed to the mold base in a state where the mold pieces abut against the reference surface by engaging the concave portions and the convex portions with each other. As a result, the mold pieces do not fall out of the mold base during the molding operation, and the plurality of mold pieces are stably mounted on the mold base. Further, a plurality of mold pieces are easily attached to and disassembled from the mold base, so that cleaning and maintenance work of the molding mold and the like are improved.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
FIGS. 1 to 3 are views showing an embodiment of a roof mirror array molding die according to any one of the first to eighth aspects. First, the configuration will be described. In FIG. 1, reference numeral 11 denotes a roof mirror array molding die, which has a roof mirror molding surface 12a corresponding to the shape of the mirror surface of the roof mirror to be molded, and is arranged in a line in the longitudinal direction. Multiple mold pieces 12
And a mold base 13 extending in the longitudinal direction together with the mold pieces 12 and supporting the plurality of mold pieces 12 on the inner peripheral surface 13a.

A reference surface 14 is provided on the inner peripheral surface 13 a of the mold base 13. The reference surface 14 is processed to have a good flatness, and extends substantially parallel to the arrangement direction of the mold pieces 12. ing. A plurality of screws 15 as pressing means are screwed on the inner peripheral surface 13a of the base mold 13 facing the reference surface 14, and the screws 15 The plurality of mold pieces 12 are arranged so as to correspond to the respective reference pieces 12, and the surfaces orthogonal to the longitudinal direction of the plurality of mold pieces 12 are brought into contact with the reference surface 14.

In order to attach the plurality of mold pieces 12 to the mold base 13 having such a configuration, after arranging the plurality of mold pieces 12 in a line along the longitudinal direction of the mold base 13, the screws 15 To move the die piece 12 toward the reference surface 14 side.
For this reason, the mold piece 12 is moved from the position shown by the broken line to the position shown by the solid line by the screw 15, is abutted against the reference surface 15, is positioned, and then attached to the mold base 13.

As described above, in the present embodiment, the reference surface 14 is provided on the inner peripheral surface of the mold base 13 and the reference surface 14 is extended substantially in parallel with the arrangement direction of the mold pieces. By pressing a surface orthogonal to the longitudinal direction of the
Since the base 12 is supported by the base mold 13, a plurality of mold pieces 12
After easy positioning on the mold base 13, the mold base 13
Can be mounted on As a result, the plurality of mold pieces 12 can be easily attached to the mold base 13 with a small number of man-hours, and the workability of the attachment work can be improved.

Further, since the screws 15 for pressing the plurality of mold pieces 12 against the reference surface 14 are provided on the inner peripheral surface 13a of the base mold 13 facing the reference surface 14, the plurality of mold pieces 12 are provided. Can be preferentially abutted against the reference surface 14 by the screw 15, and the plurality of mold pieces 12 can be attached to the mold base 13 without adjustment. As a result, the workability of the work of attaching the mold piece 12 can be improved. In addition, since the mold piece 12 is pressed by the screw 15, a plurality of mold pieces 12 can be attached by general-purpose components, and the cost of the molding mold 11 can be reduced.

In this embodiment, a screw is used as the pressing means.
Although 15 is provided, the present invention is not limited to this, and an elastic body 21 may be interposed as a pressing means between the mold base 13 and the plurality of mold pieces 12 as shown in FIG. With this configuration, the impact such as the clamping of the molding die 11 and the injection pressure during the injection molding operation can be absorbed by the elastic body 21 and the plurality of mold pieces can be absorbed.
The mold 12 can be stably supported by the mold base 13.
Further, if the elastic body 21 is formed of a leaf spring extending in the longitudinal direction together with the mold base 13, the mold piece 12 can be abutted against the reference surface with one component, and the mold piece with respect to the mold base 13 can be formed. Installation and disassembly of 12 can be easily performed.
As a result, cleaning and maintenance work of the molding die 11 can be improved.

Further, if the other pressing means is made of a low-hardness metal material, even if the metal material is deformed at the time of molding the molding die 11, a plurality of mold pieces are preferentially placed on the reference surface by the metal material. The die piece can be stuck, and the mold piece can be stably attached to the mold base during molding. If the metal material is made of copper or aluminum, the metal material can be made inexpensive, and the cost of the molding die 11 can be reduced.

As shown in FIG. 3A, the inner peripheral surface 13a of the mold base 13 facing the reference surface 14 is used instead of the pressing means.
And a mold piece facing the reference surface 14.
Protrusions 32 are provided on the surface opposite to 12 so that these recesses 31 and protrusions 32 are engaged with each other, or as shown in FIG.
A protrusion 33 is formed on the inner peripheral surface 13a of the mold base 13 facing the reference surface 14.
May be provided, and a concave portion 34 may be provided on the surface of the mold piece 12 opposite to the reference surface 14 so that the convex portion 33 and the concave portion 34 are engaged with each other.

By doing so, the mold piece 12 can be formed during the molding operation.
Can be prevented from falling out of the mold base 13,
A plurality of mold pieces 12 can be stably mounted on the mold base 13. Further, the plurality of mold pieces 12 can be easily attached to the mold base 13 and disassembled, and the cleaning and maintenance work of the molding mold 11 can be improved.

[0026]

According to the first aspect of the present invention, a plurality of mold pieces can be easily positioned on the mold base and then attached to the mold base. As a result, a plurality of mold pieces can be easily attached to the mold base with a small number of man-hours, and the workability of the attaching work can be improved.

According to the second aspect of the present invention, the plurality of mold pieces can be preferentially abutted against the reference surface by the pressing means, and the plurality of mold pieces can be mounted on the mold base without adjustment. it can. As a result, the workability of attaching the die pieces can be further improved. According to the third aspect of the present invention, a plurality of mold pieces can be mounted using general-purpose parts, and the cost of the molding mold 11 can be reduced.

According to the fourth aspect of the present invention, the impact such as injection pressure and the like of the molding die can be absorbed by the elastic body during the injection molding operation, and the plurality of die pieces can be stably held. It can be supported on a mold base. Claim 5
In the described invention, the mold piece can be abutted against the reference surface with one part, and the work of attaching and disassembling the mold piece 12 to the mold base can be easily performed. As a result, cleaning and maintenance work of the molding die and the like can be improved.

According to the sixth aspect of the present invention, even when the metal material is deformed during molding of the molding die, a plurality of mold pieces can be preferentially abutted against the reference surface by the metal material. The mold piece can be stably mounted on the mold base. According to the invention of claim 7, the metal material can be made inexpensive, and the cost of the molding die can be reduced.

According to the eighth aspect of the present invention, the mold pieces can be prevented from falling out of the mold base 13 during the molding operation, and the plurality of mold pieces can be stably mounted on the mold base. it can. Further, a plurality of mold pieces can be easily attached to and disassembled from the mold base, and the cleaning and maintenance work of the molding mold can be improved.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a mold for molding a roof mirror array according to any one of claims 1 to 8, wherein FIG. 1 (a) is a sectional view thereof, and FIG. .

FIG. 2 is a sectional view showing another embodiment of the mold for molding a roof mirror array according to any one of claims 1 to 8;

FIG. 3 is a sectional view showing another embodiment of the mold for molding a roof mirror array according to any one of claims 1 to 8;

FIG. 4 is a configuration diagram of a roof mirror array.

5A and 5B are diagrams showing a configuration of a conventional mold for molding a roof mirror array, wherein FIG. 5A is a perspective view thereof, and FIG. 5B is a sectional view thereof.

[Explanation of symbols]

 11 Mold for roof mirror array molding 12 Mold piece 12a Mirror molding surface 13 Mold base 13a Inner peripheral surface 14 Reference surface 15 Screw 21 Elastic body 31,34 Recess 32,33 Convex

Continued on the front page (72) Inventor Shinya Senoo 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Jun Jun Watanabe 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh (56) References JP-A-3-193321 (JP, A) JP-A-2-36911 (JP, A) JP-A-1-108015 (JP, A) JP-A-56-115236 (JP, A) JP-A-49-44061 (JP, A) JP-A-64-16623 (JP, A) JP-A-63-9519 (JP, A) JP-A-60-58827 (JP, A) JP-A-2- 112920 (JP, A) Japanese Utility Model 1-161013 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 45/00-45/84

Claims (8)

(57) [Claims] A roof mirror forming surface corresponding to a shape of a roof mirror surface is formed, a plurality of mold pieces arranged in a line in a longitudinal direction, and a plurality of mold pieces extending in the longitudinal direction together with the mold pieces, and an inner periphery thereof. A mold base for supporting a plurality of mold pieces on a surface thereof, wherein a reference surface is provided on an inner peripheral surface of the mold base, and the reference surface is an array of mold pieces. A roof mirror extending substantially parallel to the direction and orthogonal to the longitudinal direction of the plurality of mold pieces abutting against the reference surface, whereby the mold pieces are supported by the base mold. Array molding die. 2. The roof mirror according to claim 1, wherein a pressing means for pressing a plurality of mold pieces against the reference surface is provided on an inner peripheral surface of the base mold opposite to the reference surface. Array molding die. 3. A mold for molding a roof mirror array according to claim 2, wherein said pressing means comprises a screw screwed into a mold base. 4. The mold for molding a roof mirror array according to claim 2, wherein said pressing means is an elastic body interposed between a mold base and a plurality of mold pieces. 5. The roof mirror array molding die according to claim 4, wherein said elastic body comprises a plate spring extending in a longitudinal direction together with a die base. 6. The roof mirror array molding die according to claim 2, wherein said pressing means is made of a low-hardness metal material. 7. The roof mirror array molding die according to claim 6, wherein said metal material is made of copper or aluminum. 8. A mold having a concave portion or a convex portion on an inner peripheral surface of a mold base facing the reference surface, and a convex portion or a concave portion on a surface opposite to the mold piece facing the reference surface. 2. The method according to claim 1, wherein the concave portion or the convex portion of the base is engaged with the convex portion or the concave portion of the mold piece.
The mold for molding the roof mirror array according to the above.