JP3270251B2 - Assembly method of roof mirror array molding die piece and roof mirror array molding die having the die piece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a roof mirror array molding die piece and a roof mirror array molding die having the die piece.
A method for assembling a roof mirror array molding piece for manufacturing a roof mirror array used for an equal magnification imaging element used for an optical device for reading and writing a facsimile and the like and a roof mirror array molding having the mold piece Regarding the mold.

[0002]

2. Description of the Related Art Generally, when reading image information of a document using a roof mirror lens array, reflected light of light applied to the document is imaged by a roof mirror lens array and read by a sensor. Among them, the roof mirror lens array is a very important component for increasing the resolution of the image information of the document because it has a function of forming image information of the document on the reading unit.

FIGS. 7 and 8 show the structure of a general image reading mechanism having a roof mirror lens array. In FIGS. 7 and 8, the image reading mechanism 1 is transported onto a contact glass 3 by a transport roller 2. The image information of a document to be read (the conveying direction is the sub-scanning direction) is read. The document is disposed below the contact glass 3 and is stored in the frame 4.

A light source 5, a lens array 6, an aperture plate 7, a roof mirror array 8, a reflecting mirror 9,
And a unit-size sensor 10 as a reading unit is provided,
The roof mirror lens array is a lens array 6, an aperture plate 7,
A plurality of lens surfaces 6a, a diaphragm surface 7a, and a roof mirror surface 8a are formed adjacent to each other in the longitudinal direction.

In the image reading mechanism 1 having such a configuration, when light is irradiated from the light source 5 to a document conveyed on the contact glass 3, the light is transmitted through the lens array 6 and the aperture plate 7. After the light is irradiated onto the roof mirror array 8, an image is formed by the aperture plate 7 and the lens array 6. The formed irradiation light is reflected by the reflecting mirror 9 and is irradiated on the same-size sensor 10.

When the irradiation light is imaged by the above-described roof mirror lens array, as shown in FIGS. 9 and 10, a roof mirror array is moved from an object point (original surface) O via a lens array 6 and an aperture plate 7. 8 is reflected by an adjacent roof mirror surface 8a, and then reflected by a stop surface 7a.
Irradiates the lens surface 6a through the lens, forms an image as P on the adjacent lens surface 6a, and irradiates the same-magnification sensor 10.
(In FIG. 10, the image is formed by three lens surfaces 6a,
The lens surface 6a is not shown).

For this reason, as shown by a solid line in FIG.
It is very important to form the roof mirror surface 8a so that the inclination angle of the roof mirror surface 8a is zero, that is, the angle orthogonal to the longitudinal direction of the roof mirror array 8 is substantially zero. Therefore, the resolution of the image is greatly affected by this point. Assuming that the tilt angle of the adjacent roof mirror surface 8a is not 0, FIG.
As shown by the broken line in (a), ridge collapse i of the mirror surfaces 8a _2, ridge line of the mirror surface 8a ₁ collapse i + l, the mirror surface 8a ₃
When the ridge line inclination of each mirror surface is greatly shifted such that the ridge line inclination of the mirror surface is i-1, as shown in FIG.
The images obtained on the adjacent mirror surfaces 8a ₁ , 8a ₂ , 8a ₃ are displaced, and the resolution in the sub-scanning direction is reduced.

Therefore, it is very important to form the roof mirror lens array 8 by reducing the inclination angle of the mirror surface extending adjacent in the longitudinal direction.
Since the roof mirror array 8 is a resin product, the roof mirror array 8 is formed by an injection molding die.
Conventionally, various devices have been devised in order to form the resin.

Conventionally, as a roof mirror array molding die for manufacturing this kind of roof mirror array, there is, for example, one described in Japanese Patent Application Laid-Open No. 60-58827, as shown in FIG. Is shown in In FIG.
Reference numeral 12 denotes a roof mirror array molding die. The die 12 has a roof mirror molding surface (mirror surface) 13a corresponding to the shape of the roof mirror surface 8a, and a plurality of dies arranged in a line in the longitudinal direction. A piece 13 and a mold base 14 extending in the longitudinal direction together with the mold piece 13 and supporting a plurality of mold pieces on an inner peripheral surface,
It is composed of

The mold piece 13 is incorporated in an assembly groove 14a formed on the inner peripheral surface of the mold base 14, and the mold piece 13 includes a plurality of mold pieces provided on the bottom and side portions of the mold base 14. By pressing the bottom and side surfaces thereof with the screws 15 and positioning them from the position shown by the broken line to the position shown by the solid line, the inclination of the perpendicularity (tilt angle) of the roof mirror molding surface 13a to the side surface of the mold base 14 is corrected. It is accurately supported by the mold base 14.

The above-mentioned roof mirror array 8 is formed by using a roof mirror array forming die 12. Specifically, a movable die is arranged to face the die 12. , The roof mirror molding surface of this mold and mold piece 13
Molded by injecting molten resin between 13a. However, in the above-described mold 12, since the mold piece 13 is supported on the mold base 14 by the plurality of screws 15, the injection pressure during the injection molding, the mold closing of the mold 12 and the As a result, the screw 15 was loosened, and the angle and position of the mold piece 13 shifted with respect to the mold base 14. For this reason, there is a problem that the perpendicularity of the roof mirror forming surface 13a cannot be sufficiently obtained. In addition to this, when assembling the mold piece 13 to the mold base 14, the position of the mold piece is adjusted and then the screw 15 is tightened, so that the assembling work is deteriorated and the maintainability of the mold 12 is very low. The problem of being bad occurs.

To solve such a problem, for example, there is one described in Japanese Patent Application Laid-Open No. Hei 5-318536, which is shown in FIG. In FIG. 12, reference numeral 21 denotes a roof mirror array molding die. The die 21 has a roof mirror molding surface 22a (mirror surface) corresponding to the shape of the mirror surface of the roof mirror to be molded, and is formed in the longitudinal direction. A plurality of mold pieces 22 arranged in a row, and the mold pieces 22
And a plurality of mold pieces 22 extending on the inner peripheral surface 23a.
And a mold base 23 for supporting the

A reference surface 24 is provided on the inner peripheral surface 23a of the mold base 23. The reference surface 24 is processed into a planar shape and extends substantially parallel to the arrangement direction of the mold pieces 22. . A plurality of screws 25 as pressing means are screwed on the inner peripheral surface 23a of the mold base 23 facing the reference surface 24, and the screws 25 are attached to the mold pieces in the longitudinal direction of the mold base 23. The plurality of mold pieces 22 are arranged so as to correspond to the respective reference pieces 22, and the surfaces orthogonal to the longitudinal direction of the plurality of mold pieces 22 are brought into contact with the reference surface 24. In addition, as the pressing means, a means constituted by a leaf spring extending in the longitudinal direction together with the elastic body and the mold base 23 in addition to the screw 25 is disclosed.

In order to attach the plurality of mold pieces 22 to the mold base 23 having such a configuration, the plurality of mold pieces 22 are arranged in a line along the longitudinal direction of the mold base 23, and then the screws 25 are fixed. To move the mold piece 22 toward the reference surface 24 side.
For this reason, the mold piece 22 is moved from the position shown by the broken line to the position shown by the solid line by the screw 25, as shown in FIG. Mounted on 25. Therefore, after the plurality of mold pieces 22 are easily positioned on the mold base 23, they can be mounted on the mold base 23. As a result, the plurality of mold pieces 22
It can be easily mounted with a small number of man-hours, and the workability of the mounting work can be improved. Further, it is possible to produce sufficiently the perpendicularity of the roof mirror molding surface 22 a with respect to the reference plane 24, it is possible to form the good roof mirror array resolution.

[0015]

However, in such a conventional mold for molding a roof mirror array,
A reference surface 24 is provided in a direction perpendicular to the longitudinal direction of the mold base 23 on which the mold pieces 22 are provided, and the mold pieces 22 are pressed against the planar reference surface 24 and assembled to the mold base 23. Therefore, the assembling work of the mold piece 22 can be sufficiently improved. However, in order to obtain the perpendicularity of the roof mirror forming surface 22a of the mold piece 22, the mold base and the mold piece 22 need to be fixed. Roof mirror molding surface
Since extremely high processing accuracy is required for 22a, there was a problem that a sufficient squareness could not be obtained.

[0016] That is, Le mold piece 22 with respect to the reference plane 24
In order to give perpendicularity of Fumira molding surface 22 a is, the processing of the reference plane 24 and the mold piece 22 of mold base 23, especially the processing of the roof mirror molding surface 22a is required to have very high accuracy, the actual The reference surface 24 of the mold base 23 and the roof mirror molding surface 22
Processing variations occur in the angle and width dimension of a. For example, a roof with respect to the reference plane 24 of the mold base 23 even when the flatness of the reference plane 24 of the mold base 23 is finished in very good
If the perpendicularity of the mirror forming surface 22a is not good, the quality of the roof mirror surface of the formed Allu mirror array is deteriorated because the perpendicularity does not appear.

Also, the flatness of the reference surface 24 is poor, and
Even if the angle of the roof mirror forming surface 22a is good, the right angle of the roof mirror surface of the Aloe mirror array similarly does not come out, and the quality is deteriorated. As described above, since the squareness of the mold piece 23 cannot be sufficiently obtained, and the quality of the molded product cannot be sufficiently improved, as described above, the imaging of the irradiation light from the adjacent roof mirror surface of the roof mirror array is performed as described above. The points were shifted as shown in FIG. 9B, and the resolution was reduced.

On the other hand, in the prior art, a screw 25, an elastic body, a leaf spring, or a material of low hardness is used as a pressing means for pressing the mold piece 22 against the reference surface 24 of the mold base 23. There is a problem in that the position of the mold piece is displaced inside, so that the perpendicularity of the mold piece cannot be obtained, and the quality of the molded product is deteriorated. That is, the use of the pressing means as described above allows the die piece 22 to be pressed against the reference surface 24 even if the width of the die piece 22 varies. However, if the screw 25, an elastic body, or a leaf spring is used, the screw 25 is loosened due to the injection pressure during the injection molding, the impact when the mold 22 is closed and the mold is opened, similarly to the molding die 12 shown in FIG. However, the elastic body and the leaf spring are deformed, and the angle and the position of the mold piece 22 are shifted with respect to the mold base 23, so that there is a problem that the perpendicularity of the roof mirror molding surface 22a cannot be sufficiently obtained. have done.

Further, in order to prevent the mold piece 22 from being displaced by resin pressure or the like during the resin molding, the mold piece 22 is pressed against the reference surface 24 with a force enough to plastically deform the above-described low-hardness material. However, this does not prevent the roof mirror molding surface 22a of the mold piece 22 from being deformed, thereby preventing the quality of the molded product from deteriorating. Therefore, the invention according to claims 1 and 2 provides a set of mold pieces for molding a roof mirror array, which can obtain the perpendicularity of the roof mirror molding surface with respect to the reference surface of the mold base and can improve the quality of molded products. It is intended to provide an attachment method.

According to the third and fourth aspects of the present invention, the molded roof is provided by arranging the mold pieces such that the inclination angle of the roof mirror forming surface with respect to the reference plane of the adjacent mold pieces is minimized. A method of assembling a roof mirror array molding die piece capable of minimizing a difference in inclination angle of a roof mirror surface of a mirror array and improving the quality of a molded product, and a roof mirror having the die piece An object of the present invention is to provide an array molding die.

According to the present invention, the mold piece can be prevented from being displaced with respect to the mold base during the injection molding, and the quality of the molded product is prevented from deteriorating. It is an object of the present invention to provide a method of assembling a roof mirror array molding die piece and a roof mirror array molding die having the die piece.

[0022]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, one surface has an abutting surface that abuts a reference surface of a mold base, and a roof mirror corresponding to a shape of a roof mirror surface substantially perpendicular to the reference surface of the mold base. A plurality of mold pieces each having a molding surface and a pressing surface pressed against a reference surface of a mold base by a pressing member on the other surface located on the side opposite to the contact surface, the longitudinal direction of the mold base. a method of assembling the roof mirror array mold piece to assemble along the direction, the Le for the abutment surface
-Measure the inclination of the molding surface of the mirror, and based on the measurement result
The roof from the plurality of mold pieces to the reference plane
Gold with an inclination at which the inclination angle of the mirror molding surface is approximately right
The mold pieces are sorted, and the selected mold pieces are moved along the reference plane.
And assemble the plurality of mold pieces to the mold base.
It is characterized in that that.

According to a second aspect of the present invention, in order to solve the above problems, in the first aspect of the present invention, the contact surface
When measuring the inclination of the roof mirror molding surface with respect to,
The contact surface is brought into contact with a jig having an ideal plane,
The inclination of the roof mirror molding surface with respect to the plane of the
It is characterized by measuring .

According to a third aspect of the present invention, in order to solve the above-mentioned problem, in the second aspect of the invention, based on the measurement result, the difference in the inclination angle of the roof mirror forming surface with respect to the reference surface is minimized. It is characterized in that the mold pieces are arranged adjacent to each other on the mold base and assembled. According to a fourth aspect of the present invention, there is provided a mold base having a reference surface extending in a predetermined direction on an inner peripheral surface, and a contact surface abutting on a reference surface of the mold base. A plurality of mold pieces are formed along the reference surface of the mold base, the roof mirror forming surface corresponding to the shape of the roof mirror surface being formed on a surface substantially orthogonal to the reference surface of the mold base. And a pressing means which is provided opposite to the reference surface of the mold base and extends parallel to the reference surface of the mold base, and presses a plurality of mold pieces against the reference surface. In the tooling die, adjacent die pieces are arranged so that the difference in angle between the roof mirror forming surface and the reference surface is minimized.

According to a fifth aspect of the present invention, in order to solve the above-mentioned problem, a contact surface that abuts on one surface with a reference surface of a mold base, and a surface substantially orthogonal to the reference surface of the mold base. A roof mirror molding surface corresponding to the shape of the roof mirror surface
A plurality of mold pieces having a pressing surface pressed against the reference surface of the mold base by a pressing member on the other surface located on the side opposite to the contact surface, along the longitudinal direction of the mold base. In the method of assembling a mold piece for forming a roof mirror array, a columnar member formed of the same material as the mold piece and extending along a reference surface is used as the pressing means, and the reference surface and the pressing means are used. And the width between one surface and the other surface of the mold piece is measured, and the mold piece having the minimum difference width with respect to the separation distance is placed between the reference surface and the pressing means. It is characterized by being arranged and assembled.

According to a sixth aspect of the present invention, in order to solve the above-mentioned problems, a contact surface that abuts on one surface with a reference surface of a mold base, and a surface substantially orthogonal to the reference surface of the mold base. A roof mirror molding surface corresponding to the shape of the roof mirror surface
A plurality of mold pieces having a pressing surface pressed against the reference surface of the mold base by a pressing member on the other surface located on the side opposite to the contact surface, along the longitudinal direction of the mold base. In the method of assembling a mold piece for forming a roof mirror array, as the pressing means, a columnar member formed of the same material as the mold piece and extending along a reference plane is used, and one of the mold pieces is used. It is characterized in that those having a smaller width between the surface and the other surface are sequentially selected from those having a smaller width, and the die pieces are arranged and assembled on a die base in the order of the size.

According to a seventh aspect of the present invention, there is provided a mold base having an inner peripheral surface having a reference surface extending in a predetermined direction, and an abutment contacting the reference surface of the mold base. A surface having a surface, and a roof mirror molding surface corresponding to the shape of the roof mirror surface is formed on a surface substantially orthogonal to the reference surface of the mold base, and a plurality of the mirrors are arranged along the reference surface of the mold base. The die piece is made of the same material as the die piece, and is provided so as to face the reference surface of the die base and extend along the reference surface of the die base. A column-shaped pressing means for pressing a plurality of mold pieces toward a reference surface by pressing a pressing surface located thereon, wherein a separation between the reference surface and the pressing means is provided. Distance between one side and the other side of each mold piece It is characterized in that the mold frame is arranged so that the difference is minimized between.

According to an eighth aspect of the present invention, there is provided a mold base having an inner peripheral surface having a reference surface extending in a predetermined direction, and an abutment contacting the reference surface of the mold base. A surface having a surface, and a roof mirror molding surface corresponding to the shape of the roof mirror surface is formed on a surface substantially orthogonal to the reference surface of the mold base, and a plurality of the mirrors are arranged along the reference surface of the mold base. The die piece is made of the same material as the die piece, and is provided so as to face the reference surface of the die base and extend along the reference surface of the die base. A column-shaped pressing means for pressing a plurality of mold pieces toward a reference surface by pressing a pressing surface located therein, and a mold for molding a roof mirror array, the mold pieces being one surface and So that the width between the other surfaces decreases gradually from the largest one It is characterized by being provided.

[0029]

According to the first aspect of the present invention, it is preferable that the
Measure the inclination of the mirror shaping surface, and copy based on the measurement result.
Of the roof mirror molding surface from the number of mold pieces to the reference surface
The mold pieces with inclinations that make the inclination angle approximately right angle are selected and selected.
Arrange the separated mold pieces along the reference plane, and
Is attached to the mold base.

Therefore, the mold piece is
Prevents misalignment (not right-angled) of the mirror surface
This prevents the roof mirror surface of the molded product from tilting.
As a result, the quality of the molded product is improved.

Further, by the processing variations, poor flatness of the reference plane of the mold base, also, even when the inclination angle of the roof mirror <br/> molding surface of the mold piece is not perpendicular to the reference plane, the When the mold piece is pressed against a reference surface having an inclination, the mold piece whose inclination angle of the molding surface of the roof mirror is perpendicular to the reference surface is selected, disposed on the mold base, and assembled. The molding surface of the roof mirror of the mold piece is substantially perpendicular to the surface.

As a result, the mold piece is arranged and assembled on the mold base such that the roof mirror forming surface is at right angles to the reference surface, and the roof mirror surface of the molded product is also attached to the mold piece. Accordingly, it is formed to have no inclination, and the quality of the molded product is improved.
According to the invention described in claim 2, the roof mirror with respect to the contact surface
When measuring the inclination of the molding surface, a treatment with an ideal flat surface
Abut the contact surface to the fixture, and make the roof mirror
-It measures the inclination of the molding surface. like this
The ideal plane of the roof mirror molding surface of the mold piece
Can be easily measured. Claim 3
In the invention described, based on the measurement result of the roof mirror molding surface of the mold piece, the difference in inclination angle of the roof mirror the molding surface relative to a reference plane, the smallest of the mold piece is disposed on the mold base so as to adjoin It can be assembled.

The reason for this arrangement is that normally, the reflected light incident on the roof mirror array is reflected by an adjacent roof mirror surface, and then is incident on a reading unit such as a 1: 1 sensor through a diaphragm plate and a lens array. At this time, light reflected from a plurality of adjacent roof mirror surfaces is formed into an image at one point, and the image formed is read by an equal-magnification sensor or the like.

Therefore, by disposing the mold pieces as described above, the optical axis of the light emitted from the surface adjacent to the roof mirror surface of the molded product does not shift, and the light is emitted from the adjacent roof mirror surface. The image forming point of the light is superimposed on one place, and the resolution of the image information of the document is greatly improved. As a result, the quality of the molded product is improved. In addition, since it is only necessary to dispose the mold pieces having the smallest difference in the inclination angle of the roof mirror molding surface of the mold pieces on the mold base so as to be adjacent to each other, all the mold pieces need to be arranged.
It is not necessary to determine the perpendicularity of the roof mirror forming surface with respect to the reference surface, the work of assembling the mold pieces can be made very simple, and the workability of the assembling work can be improved.

According to the fourth aspect of the present invention, since the adjacent mold pieces are arranged so as to minimize the difference between the angle of the roof mirror forming surface with respect to the reference surface, the adjacent surface of the roof mirror surface of the molded product. Prevents the optical axis of the light emitted from the camera from shifting, and allows the image point of the light emitted from the adjacent roof mirror surface to be overlapped at one place, greatly improving the resolution of the image information of the document A high-quality mold for roof mirror array molding that can be manufactured can be obtained.

According to the fifth aspect of the present invention, the same material as the mold piece is used.
Using a columnar pressing means formed of a material and extending along the reference surface of the mold base, the separation distance between the reference surface of the mold base and the pressing means in a state where the pressing means is attached to the mold base. While being measured, the width between one surface and the other surface of each mold piece is measured, and the mold piece having the minimum difference width with respect to the separation distance is placed between the reference surface and the pressing means. It is arranged and assembled.

Therefore, even when there is processing variation in the width of each mold piece, or when the distance between the reference surface and the pressing means varies due to processing variation of the reference surface or the surface of the pressing means, the pressing piece moves the die piece. It is securely pressed against the reference surface and assembled. For this reason, the position of the mold piece does not shift due to the injection pressure during the injection molding, the impact when the mold is closed and the mold is opened, and the roof mirror molding surface does not tilt, and the quality of the molded product is deteriorated. There is no.

Further, since the arrangement position of the mold piece with respect to the mold base is determined in advance, the mold piece can be easily attached to the mold base even when the mold piece is attached to the mold base again after maintenance. , And maintainability is improved. In the invention according to claim 6, the mold piece is formed of the same material as the mold piece,
Using a columnar pressing means extending along the reference surface of the mold base, a mold piece having a smaller width between one surface and the other surface of the mold piece is sequentially selected from those having smaller widths, and the molds are arranged in descending order of the size. The pieces are arranged on the mold base and assembled.

Accordingly, when the flatness of the reference surface of the mold base and the surface of the pressing means is relatively good, the pressing means securely presses the mold piece against the reference surface without any gap. For this reason, the position of the mold piece does not shift due to the injection pressure during the injection molding, the impact when the mold is closed and the mold is opened, and the roof mirror molding surface does not tilt, and the quality of the molded product is deteriorated. There is no.

In the case where the width of the mold pieces is not arranged as described above and the width of the mold pieces is randomly arranged, for example, when a wide mold piece is arranged in the middle, the mold adjacent to the middle mold piece is arranged. Since the pieces are disposed with a large gap between the mold base and the pressing means, the mold pieces are displaced during the injection molding, and the quality of the molded product is deteriorated. . In the present invention, such a problem does not occur by disposing the die pieces as described above.

Further, since the arrangement position of the mold pieces with respect to the mold base is determined in advance, even when the mold pieces are re-attached to the mold base after maintenance, the mold pieces can be easily attached to the mold base without gaps. Attached, maintenance is improved. In the invention according to claim 7, the pressing means is the same as the mold piece.
Flip made of a material, is composed of columnar members extending along the reference surface, the width between the one surface and the other surface of the separation distance and each mold piece between the mold base of the reference surface and the pressing means The mold pieces are arranged so as to minimize the difference between the mold pieces.

Therefore, the position of the mold piece does not shift due to the injection pressure during the injection molding, the impact of the mold clamping and the opening of the mold, and the molding surface of the roof mirror does not tilt. Never do. In the invention according to claim 8, the pressing means is made of the same material as the mold piece, and is constituted by a columnar member extending along the reference plane, and the mold piece is provided between one surface and the other surface. Are arranged so as to become smaller sequentially from the one having the larger width.

Therefore, the position of the mold piece does not shift due to the injection pressure during the injection molding, the impact when the mold is closed and the mold is opened, and the roof mirror molding surface is not inclined, and the quality of the molded product is deteriorated. Never do. If the width of the mold pieces is not arranged in this way and the width of the mold pieces is randomly arranged, for example, if a wide mold piece is arranged in the middle, the mold piece adjacent to the middle mold piece is Since a large gap is provided between the mold base and the pressing means, the mold pieces are displaced during the injection molding, and the quality of the molded product is deteriorated. In the present invention, such a problem does not occur by disposing the die pieces as described above.

[0044]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
FIGS. 1 to 3 are views showing one embodiment of a method of assembling a mold piece for molding a roof mirror array according to the first or second aspect. First, the basic principle of the present invention will be described.

In FIG. 1, 31 is a mold piece, and 32 is a mold piece 31.
Is a mold base to which the mold piece 31 is attached to the mold base 32 while being pressed against the reference surface 33 of the mold base 32 by a pressing means (not shown). The mold members 31 are roof mirror molding surface 31a consisting of a mirror for forming a roof mirror surfaces of the roof mirror array in a plane perpendicular to the reference plane 33 is formed, the Rufumi
The molding surface 31a is required to have a high squareness with respect to the reference surface 33 (in the drawing, the mold piece 31 indicated by a solid line is pressed against the reference surface 33 having an ideal plane at a high squareness. ing).

However, the reference surface 33 is not an ideal plane, but becomes a reference surface 34 indicated by an intersection line due to some undulations due to processing variations.
When pressed against the reference surface 34, the roof mirror molding surface 31a is not at a right angle but tilts, and the adjacent die piece
Variations also occur between the 31 roof mirror forming surfaces 31a.
Therefore, when is irradiated with exposure light a by pressing the mold members 31 to the reference plane 34, although in must be reflected in parallel to the exposure light a ₁ and the exposure light a would otherwise, b As shown in FIG. 7, the light was reflected off the exposure light a. As a result, the exposure light reflected from the adjacent mold piece 31a also shifts, and the exposure light reflected from the adjacent roof mirror surface of the formed roof mirror array is not imaged at one point. The resolution is reduced.

Therefore, in the present invention, the undulation and inclination due to processing variations occurring on the reference surface of the mold base or the roof mirror molding surface of the mold piece are considered, and the roof mirror molding surface and the reference surface corresponding to the undulation and inclination are considered. Is selected to assemble the mold piece on the mold base. Hereinafter, specific examples will be described.

In FIG. 2, reference numeral 35 denotes a mold piece. The mold piece 35 has a contact surface 35a which is in contact with a reference surface of a mold base, which will be described later , on one surface, and a reference surface of the mold base. A roof mirror forming surface 35b corresponding to the shape of a roof mirror surface of a lua mirror array (molded product) (not shown) on a surface substantially orthogonal to the surface.
And a pressing surface 35c which is pressed against the reference surface of the mold base by pressing means described later on the other surface opposite to the contact surface 35a.

Before the mold piece 35 is assembled to the mold base, the inclination angle of the roof mirror forming surface 35b with respect to the contact surface 35a is measured by a jig 36 having a flat surface 36a having no unevenness. That is, the contact surface 35a of the mold piece 35 is flat.
Irradiating light as indicated by arrow L in a state pressed against the roof mirror molding surface 35 b to 36a. Then, by measuring the optical axis of the light reflected with respect to the optical axis of the light L, how much the optical axis with respect to the optical axis L is on the + L side or the −L side.
(Actually in seconds) Measure if it is off. In this way, the ideal plane of the roof mirror molding surface 35b of the mold piece 35 is formed.
The inclination with respect to 36a can be easily measured.

On the other hand, as shown in FIG.
The reference plane 38 of 37 also undulates due to processing variations and is not an ideal plane, but has an inclination as shown by + A1 with respect to the ideal plane A, for example. Therefore, a mold piece 35 having an inclination according to the inclination of the reference plane A1 on the + side is selected from the plurality of mold pieces 35, and specifically, the contact surface 35a of the mold piece 35 is changed to the reference surface 38. If the mold piece 35 having the same numerical value as the inclination of the roof mirror molding surface 35b with respect to the reference surface 38 at -L when pressed is selected, the reference surface of the mold base 37 is selected.
Regardless of the processing variation of the roof mirror forming surface 38b or the roof mirror forming surface 35b, the roof mirror forming surface of the
35b can be assembled to the mold base 38 at a substantially right angle.

When assembling the mold pieces 35, as shown in FIG. 3 (b), the mold pieces 35 are arranged on the mold base 37 so as to be adjacent to each other without any gap, and the pressing block 39 is moved. After being brought into contact with the pressing surface 35c of the mold piece 35, the pressing block 39 is attached to the mold base 37 with a screw (not shown). For this reason, the mold block 35 can be pressed against the reference surface 38 by the pressing block 39 and assembled to the mold base 37. The molding die 40, the molding base 37, and the pressing block 39 constitute a molding die 40.

The pressing block 39 constitutes a pressing means, and is made of the same material as the mold piece 35 (for example, if the mold piece is made of an iron-based material, And is formed in a columnar shape extending along the reference surface 38. As described above, in this embodiment, before assembling the mold piece 35 to the mold base, the reference surface
After the mounting position of the mold piece 35 with respect to the reference surface 38 is adjusted so that the inclination angle of the roof mirror molding surface 35b with respect to 38 is substantially perpendicular, the mold piece 35 is moved along the reference surface 38 of the mold base 37. Since it is arranged and assembled, the position of the roof mirror molding surface 35b of the mold piece 35 with respect to the reference surface 38 is prevented from shifting (it does not become a right angle), and the roof mirror surface of the molded product is prevented from tilting And the quality of the molded article can be improved.

The roof of the mold piece 35 with respect to the reference surface 38
As a method of adjusting the inclination angle of the mirror forming surface 35b to be substantially a right angle, an ideal flat surface 36 having no unevenness is used in advance.
With the contact surface 35a of the mold piece 35 in contact with the jig 36 having the a, the inclination angle of the roof mirror forming surface 35b with respect to the plane 36a is measured, and based on the measured value, the mold piece 35 Is disposed on the mold base 37 and assembled, so that the flatness of the reference surface 38 is poor due to processing variations, and the inclination angle of the roof mirror forming surface 35b is Even if it does not form a right angle, when the mold piece 35 is pressed against the inclined reference surface 38, the roof mirror forming surface 35b with respect to the reference surface 38
Select the mold piece 35 whose inclination angle is right angle and mold base
If it is arranged and assembled on 37, the die piece 35
The roof mirror forming surface 35b can be made substantially perpendicular.

[0054] Consequently, the mold base 37 and mold piece 35 so as to be perpendicular to the roof mirror <br/> molding surface 35 b to the reference surface 38
And the roof mirror surface of the molded article can be formed to have no inclination in accordance with it, and the quality of the molded article can be improved. FIG. 4 shows claim 3 or claim 4.
FIG. 2 is a view showing an embodiment of the method of assembling the roof mirror array molding die piece and the roof mirror array molding die having the die piece described in FIG.

In this embodiment, the smaller the difference in angle between the roof mirror molding surface of the adjacent mold piece and the mold base reference plane is better in terms of optical performance. It is characterized in that a device having a small difference in the inclination angle of the surface is provided. In addition,
The method of measuring the roof mirror molding surface of the mold piece is the same as in the above embodiment.

In FIG. 4, reference numerals 41 and 42 denote mold pieces. The contact faces 41a and 42a, the roof mirror forming faces 41b and 42b, and the pressing faces 41c and 42c are respectively provided on the faces of the mold pieces 41 and 42. Is molded. The mold pieces 41 and 42 are formed on an ideal flat surface 36 formed on the jig 36 by the measuring method described above in advance.
After roof mirror molding surface 41b, the inclination angle of 42b was measured with respect to a, the die base 43 as the mold piece 41 adjacent those differences in the angle of inclination of the roof mirror forming surface 41 b is small
Arranged along the longitudinal direction of the reference plane 44, the mold piece 42 Le
Those in the inclination angle of Fumira molding surface 42 b is small is arranged along the longitudinal direction of the reference surface 44 of the mold base 43 so as to be adjacent. A pressing block 45 is attached to the mold base 43, and the pressing blocks 45 press the respective mold pieces 41 and 42 against the reference surface 44. The pressing block 45 has a configuration similar to that of the above-described embodiment.

In this embodiment, as in the above-described embodiment,
Each mold piece 41 rather than disposed according to the inclination of the reference plane 44, the roof mirror forming surface 41 of the mold piece 41 b, 42 b
Based on the measurement results, the difference between the inclination angles of the roof mirror forming surfaces 41b and 42b with respect to the reference surface 44 is the smallest mold pieces 41 and 42.
Are arranged on the mold base 43 so as to be adjacent to each other and assembled. In this arrangement, normally, the reflected light incident on the roof mirror array is reflected by an adjacent roof mirror surface, and then is incident on a reading unit such as a 1: 1 sensor through a diaphragm plate and a lens array. In addition, light reflected from a plurality of adjacent roof mirror surfaces is formed into an image at one point, and an image formed by an equal-magnification sensor or the like is read.

Therefore, as described above, the mold pieces 41, 42
Is provided, it is possible to prevent the optical axis of light emitted from the adjacent surface of the roof mirror surface of the molded product from being shifted, and to form the image point of the light emitted from the adjacent roof mirror surface in one place. They can be superimposed, and the resolution of the image information of the document can be greatly improved. As a result, the quality of the molded product can be improved.

The roof mirror molding surfaces of the mold pieces 41 and 42
All the mold pieces need only be arranged on the mold base 43 so that the mold pieces having the smallest difference in inclination angle between 41b and 42b are adjacent to each other.
It is not necessary to set the right angles of the roof mirror forming surfaces 41b and 42b of the 41 and 42 with respect to the reference surface 44, and the assembling work of the mold pieces 41 and 42 can be made very simple. Workability of work can be improved.

FIG. 5 is a diagram showing an embodiment of a method of assembling a roof mirror array molding die piece according to claim 5 or 7 and a roof mirror array molding die having the die piece. FIG. 5 is a view of the molding die as viewed from above. In FIG. 5, reference numerals 51 to 56 denote mold pieces, and the mold pieces 51 to 56 are attached to a mold base 57 and a pressing block 59. The mold base 59 has a reference surface 58 extending in a predetermined direction on the inner peripheral surface, and the contact surfaces 51a to 56a formed on one surface of the mold pieces 51 to 56 abut on the reference surface 58. ing.

A surface of the roof mirror forming surface 51 corresponding to the shape of the roof mirror surface of the roof mirror array, which is a molded product, is provided on a surface of the contact surfaces 51a to 56a substantially perpendicular to the reference surface 58.
b to 56b are formed, and the mold pieces 51 to 56 are
It is arranged along. The pressing block (pressing means) 59 is made of a material (e.g., an iron-based material) substantially equivalent to the mold pieces 51 to 56, and is provided so as to face the reference surface 58 and extend along the reference surface 58. , Contact surfaces 51a of the mold pieces 51 to 56
By pressing the pressing surfaces 51c to 56c located on the opposite side of 56a, the mold pieces 51 to 56 are pressed toward the reference surface 58.

Next, the operation will be described. Normally, each mold piece 51
-56 is the roof mirror molding surface by pressing block 59
51b to 56b are pressed with a pressing force that does not cause deformation. However, when undulation occurs without the reference surface 58 and the pressing block 59 being straightened due to processing variation, the distance between the reference surface 58 and the pressing block 59, that is, the insertion portion of the mold pieces 51 to 56. A dimensional difference occurs, or a processing variation of the mold pieces 51 to 56 occurs, so that the mold pieces 51 to 56 cannot be reliably pressed, and the mold pieces 51 to 56 and the reference surface 58 There is a gap between the mold pieces
51-56 move, and the formed surfaces 51b-56b cannot be reliably transferred to the molded product due to the resin pressure during the injection molding.

Therefore, in this embodiment, the pressing block
With the 59 attached to the mold base 57, the separation distance between the reference surface 58 and the pressing block 59 is measured, and each mold piece 51
5656 (the distance between the contact surfaces 51a-56a and the pressing surfaces 51c-56c), and the mold piece having the minimum difference width with respect to the separation distance between the reference surface 58 and the pressing block 59. 51 to 56 are selected and arranged between the reference surface 58 and the pressing block 59 to be assembled.

In this way, even when the width of each of the mold pieces 51 to 56 has a processing variation, or when the distance between the reference surface 58 and the pressing block 59 varies due to the processing variation of the reference surface 58, a plurality of processing is performed. The mold blocks 51 to 56 can be securely pressed against the reference surface 58 by the pressing block 59 and assembled. Therefore, the injection pressure during injection molding, offset the position of the mold pieces 51 to 56 by the mold clamping and mold shocks during opening of Le
The inclined mirror molding surfaces 51b to 56b can be prevented from tilting, and the quality of molded products can be prevented from deteriorating.

In addition, the mold piece with respect to the mold base 57 is previously determined.
Since the arrangement position of 51 to 56 can be determined, the mold piece 51
When re-attaching to the mold base 57 after maintenance, the mold pieces 51 to 56 can be easily attached to the mold base 57, and the maintainability can be improved.
FIG. 6 is a view showing an embodiment of a method of assembling a roof mirror array molding die piece according to claim 6 or 8 and a roof mirror array molding die having the die piece.
FIG. 2 shows a view of a molding die as viewed from above. The embodiment shows the method and structure of assembling the mold pieces when the flatness of the surfaces of the mold base and the pressing block is relatively good, and the structure of the mold pieces is as shown in FIG. Therefore, the description will be made using the mold pieces shown in FIG.

Each mold piece 51 is mounted on a mold base 65 and a pressing block 67. The mold base 65 has a reference surface 66 extending in a predetermined direction on the inner peripheral surface, and the contact surface 51 a formed on one surface of each mold piece 51 is in contact with the reference surface 66. Further, the pressing block (pressing means) 67 is made of a material (e.g., an iron-based material) substantially equivalent to the mold piece 51, and is provided so as to face the reference surface 66 and extend along the reference surface 66. Each mold piece 51 is pressed toward the reference surface 66 by pressing the pressing surface 51c located on the opposite side of the contact surface 51a of the mold piece 51.

Next, the operation will be described. Normally, each mold piece 51
Is the roof mirror molding surface 51b by the pressing block 67.
Are pressed with a pressing force that does not cause deformation. In the present embodiment, when assembling the molds, first, the ones having the width of the mold piece 51 (the width between the abutting surface 51a and the pressing surface 51c) are selected in ascending order from the smallest one, and The mold piece 51 is disposed on the mold base 65 and assembled.

[0086] If the components are arranged and assembled as described above, the mold base is provided.
When the flatness of the reference surface 66 of 65 and the surface of the pressing block 67 is relatively good, the pressing block 67 can reliably press the die piece 51 against the reference surface 66 without any gap and assemble it. For this reason, the position of the mold piece 51 is shifted due to an injection pressure during the injection molding, an impact when the mold is closed and the mold is opened, and the like.
The roof mirror molding surface 51b can be prevented from tilting, and the quality of the molded product can be prevented from deteriorating.

On the other hand, if the width of the mold pieces 51 is arranged randomly without such arrangement, for example, if a wide mold piece is arranged in the center, Adjacent mold pieces will be arranged with a large gap between the mold base 65 and the pressing block 67, and the mold pieces will be displaced during injection molding and the quality of molded products will deteriorate. Will be done. In the present embodiment, such a problem does not occur by disposing the mold piece 51 as described above.

Also, the mold piece with respect to the mold base 65 is set in advance.
Since the arrangement position of the mold pieces 51 is fixed, when the mold pieces 51 are reattached to the mold base 65 after maintenance, the mold pieces 51 are also required.
Can be easily attached to the mold base, and the maintainability can be improved.

[0071]

According to the first aspect of the present invention, it is possible to prevent the roof mirror molding surface of the mold piece from being displaced (not to be at a right angle) with respect to the reference surface, and to reduce the roof mirror surface of the molded product. It is possible to prevent the inclination angle from being shifted and improve the quality of the molded product. In addition, even if the flatness of the reference surface of the mold base is poor due to processing variations and the inclination angle of the roof mirror molding surface of the mold piece is not perpendicular to the reference surface, the reference piece having the inclination is inclined. the inclination angle of the roof mirror molding surface is assembled by arranging the mold base by selecting the mold piece to be perpendicular to the reference surface when pressed against the surface of the mold piece with respect to the reference plane Le
The mirror forming surface can be made substantially perpendicular. As a result, the mold piece can be arranged and assembled on the mold base so that the roof mirror molding surface is at right angles to the reference surface, and the roof mirror surface of the molded product does not tilt accordingly. To improve the quality of the molded article. According to the second aspect of the invention, the roof mirror of the mold piece is provided.
-Easily measure the inclination of the molding surface to the ideal plane
be able to.

According to the third aspect of the present invention, since the mold piece in which the difference in the inclination angle between the adjacent roof mirror molding surfaces is small is selected and disposed, the roof mirror surface of the molded product is adjacent to the roof mirror surface. The optical axis of the light emitted from the surface can be prevented from being shifted, and the image forming point of the light emitted from the adjacent roof mirror surface can be overlapped at one place. For this reason, the resolution of the image information of the document can be greatly improved, and the quality of the molded product can be improved.

Further, since the mold pieces having the smallest difference in the inclination angles of the roof mirror molding faces of the mold pieces may be arranged on the mold base so as to be adjacent to each other, the roof mirror molding faces of all the mold pieces may be directly positioned. By eliminating the need for setting the angle, the work of assembling the mold pieces can be made very simple, and the workability of the assembling work can be improved. According to the fourth aspect of the invention, the optical axis of the light emitted from the surface adjacent to the roof mirror surface of the molded product is prevented from being shifted, and the image forming point of the light emitted from the adjacent roof mirror surface is prevented. Can be superimposed at one location, and a high-quality mold for roof mirror array molding can be obtained which can greatly improve the resolution of image information of a document.

According to the fifth aspect of the present invention, even when there is processing variation in the width of each mold piece, or when the distance between the reference surface and the pressing means varies due to processing variation in the reference surface or the surface of the pressing means. In addition, the die piece can be securely pressed against the reference surface by the pressing means and assembled. For this reason, it is possible to prevent the position of the mold piece from shifting due to the injection pressure during the injection molding, the impact when the mold is closed and the mold is opened, and the roof mirror molding surface is tilted, and the quality of the molded product is reduced. Can be prevented from decreasing.

Further, since the arrangement position of the mold piece with respect to the mold base can be determined in advance, even when the mold piece is re-attached to the mold base after maintenance, the mold piece is kept in the mold base without any gap. It can be easily attached, and the maintainability can be improved. According to the invention as set forth in claim 6, when the flatness of the reference surface of the mold base and the surface of the pressing means is relatively good, the pressing means surely presses the mold piece against the reference surface without any gap. Can be attached. For this reason, it is possible to prevent the position of the mold piece from shifting due to the injection pressure during the injection molding, the impact when the mold is closed and the mold is opened, and the roof mirror molding surface is tilted, and the quality of the molded product is reduced. Can be prevented from decreasing.

Further, since the arrangement position of the mold piece with respect to the mold base can be determined in advance, even when the mold piece is mounted on the mold base again after maintenance, the mold piece can be easily attached to the mold base without any gap. Can be mounted on the device, and the maintainability can be improved. According to the invention of claim 7, wherein, Lou displaced position of the mold pieces by the injection pressure, impact at mold clamping and mold opening of the mold such as in injection molding
It is possible to obtain a molding die capable of preventing the fmirror molding surface from being tilted and preventing the quality of the molded product from deteriorating.

According to the eighth aspect of the present invention, the position of the mold piece shifts due to the injection pressure during the injection molding, the impact when the mold is clamped and the mold is opened, and the roof mirror molding surface is inclined. In addition, it is possible to obtain a molding die that can prevent the quality of a molded product from being deteriorated.

[Brief description of the drawings]

FIG. 1 is a principle diagram for explaining an embodiment of a method of assembling a mold piece for molding a roof mirror array according to the first or second aspect of the present invention.

FIG. 2 is a view showing a state in which the mold piece is attached to a jig and a tilt angle of a roof mirror forming surface is measured.

FIG. 3A is a cross-sectional view of a roof mirror array molding die for achieving the method of assembling the roof mirror array molding die piece, and FIG. 3B is an external view of the roof mirror array molding die. FIG.

FIG. 4 is an external view of a roof mirror array molding die for achieving the method of assembling the roof mirror array molding die piece according to the third or fourth aspect.

FIG. 5 is a top view of a roof mirror array molding die for achieving the method of assembling the roof mirror array molding die piece according to claim 5 or 7;

FIG. 6 is a top view of a roof mirror array forming die for achieving the method of assembling the roof mirror array forming die piece according to the sixth or eighth aspect.

FIG. 7 is a cross-sectional view of an image reading mechanism having a general roof mirror lens array.

FIG. 8 is an exploded view of a roof mirror lens array.

9A is a diagram showing a light reflection state when the inclination angle of the roof mirror surface of the roof mirror array is 0 and a light reflection state when a ridge line collapse occurs, and FIG. It is a figure which shows the shift of the imaging point of the light reflected from the roof mirror surface which occurred.

FIG. 10 is a diagram showing an optical path of light reflected from a good roof mirror surface.

11A and 11B are diagrams showing a configuration of a conventional mold for molding a roof mirror array, in which FIG. 11A is a perspective view thereof, and FIG. 11B is a sectional view thereof.

12A and 12B are diagrams showing a configuration of a conventional roof mirror array molding die, in which FIG. 12A is a cross-sectional view and FIG. 12B is a cross-sectional view of a main part thereof.

[Explanation of symbols]

 31, 35, 41, 51-56 Mold pieces 35a, 41a, 51a-56a Abutment surfaces 31a, 35b, 41b, 51b-56b Roof mirror molding surfaces 35c, 41c, 51c-56c Pressing surfaces 32, 37, 43, 57, 65 Mold base 33, 38, 44, 58, 66 Reference surface 36 Jig 36a Flat surface 39, 45, 59, 67 Press block (press means)

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinya Senoo 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Inventor Jun Jun Watanabe 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (56) References JP-A-60-58827 (JP, A) JP-A-5-318536 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 45 / 00-45/84

Claims (8)

(57) [Claims] An abutting surface which abuts a reference surface of a mold base on one surface; and a roof mirror forming surface corresponding to a shape of a roof mirror surface on a surface substantially orthogonal to the reference surface of the mold base. A pressing surface pressed against the reference surface of the mold base by a pressing member on the other surface located on the side opposite to the contact surface, a plurality of mold pieces along the longitudinal direction of the mold base. In the method of assembling the roof mirror array molding die piece, the inclination of the roof mirror molding surface with respect to the contact surface is measured.
From the plurality of mold pieces based on the measurement result.
The inclination angle of the roof mirror forming surface with respect to the reference surface is substantially
A mold piece having a right-angled inclination is selected, and the selected
A mold piece is disposed along the reference plane, and the plurality of mold pieces are arranged.
The method of assembling the roof mirror array mold piece, characterized in that mounted in the mold based. 2. The molding of the roof mirror with respect to the contact surface.
When measuring the inclination of a surface, use a jig with an ideal plane.
The contact surface is brought into contact with the
The method of assembling the roof mirror array mold piece according to claim 1, wherein the measuring the inclination of Fumira molding surface. 3. The method according to claim 2, wherein a difference in the inclination angle of the roof mirror forming surface with respect to the reference surface is set to a minimum value in a mold base adjacent to the reference surface based on the measurement result. Item 3. The method for assembling a mold piece for molding a roof mirror array according to Item 2. 4. A mold base having an inner peripheral surface having a reference surface extending in a predetermined direction, a contact surface in contact with the reference surface of the mold base, and having a contact surface with respect to the reference surface of the mold base. A roof mirror forming surface corresponding to the shape of the roof mirror surface is formed on a substantially orthogonal surface, and the plurality of mold pieces arranged along the reference surface of the mold base and the reference surface of the mold base are opposed to each other. And a pressing means for pressing a plurality of mold pieces against the reference surface, the pressing means being provided in parallel with the reference surface of the mold base. A roof mirror array molding die, which is disposed so as to minimize the difference in angle between the roof mirror molding surface and the reference surface. 5. A contact surface in contact with a reference surface of a mold base on one surface, and a roof mirror forming surface corresponding to a shape of a roof mirror surface on a surface substantially orthogonal to the reference surface of the mold base. A pressing surface pressed against the reference surface of the mold base by a pressing member on the other surface located on the side opposite to the contact surface, a plurality of mold pieces along the longitudinal direction of the mold base. In the method of assembling a mold piece for molding a roof mirror array, a columnar member formed of the same material as the mold piece and extending along a reference plane is used as the pressing means, While measuring the separation distance between the reference surface of the mold base and the pressing means in the state of being attached to the base, measure the width between one surface and the other surface of each mold piece, and measure the separation distance. Between the reference surface and the pressing means. A method of assembling a roof mirror array molding die piece, which is arranged and assembled between the mold pieces. 6. A contact surface in contact with a reference surface of a mold base on one surface, and a roof mirror forming surface corresponding to a shape of a roof mirror surface on a surface substantially orthogonal to the reference surface of the mold base. A pressing surface pressed against the reference surface of the mold base by a pressing member on the other surface located on the side opposite to the contact surface, a plurality of mold pieces along the longitudinal direction of the mold base. In the method of assembling a mold piece for molding a roof mirror array, a column member formed of the same material as the mold piece and extending along a reference plane is used as the pressing means. A roof mirror mirror having a width gradually increasing from a surface having a smaller width between the surface and the other surface, and arranging and assembling the die pieces on a die base in ascending and descending order.
How to assemble die mold pieces for ray molding. 7. A mold base having an inner peripheral surface having a reference surface extending in a predetermined direction, a contact surface contacting the reference surface of the mold base, and having a reference surface with respect to the reference surface of the mold base. A roof mirror molding surface corresponding to the shape of the roof mirror surface is molded on a surface substantially orthogonal to the surface, and a plurality of mold pieces arranged along the reference surface of the mold base, and made of the same material as the mold piece,
A plurality of die pieces are provided by opposing a reference surface of the die base and extending along the reference surface of the die base, and pressing a pressing surface located on a side opposite to a contact surface of the die piece. A column-shaped pressing means for pressing the reference surface toward the reference surface, and a separation distance between the reference surface and the pressing means, and a distance between one surface and the other surface of each mold piece. The roof mirror, wherein the mold pieces are arranged so that the difference between the width and the width therebetween is minimized.
Array molding die. 8. A mold base having a reference surface extending in a predetermined direction on an inner peripheral surface, a contact surface abutting on a reference surface of the mold base, and a contact surface with respect to the reference surface of the mold base. A roof mirror molding surface corresponding to the shape of the roof mirror surface is molded on a surface substantially orthogonal to the surface, and a plurality of mold pieces arranged along the reference surface of the mold base, and made of the same material as the mold piece,
A plurality of mold pieces are provided by opposing a reference surface of the mold base and extending along the reference surface of the mold base, and pressing a pressing surface located on a side opposite to a contact surface of the mold piece. And a column-shaped pressing means for pressing the surface toward a reference surface, wherein the die pieces are sequentially reduced in size from the one having the larger width between one surface and the other surface. For molding a roof mirror array.