JP7079657B2 - Simultaneous molding method of three constituent articles equipped with a slide member using a mold and its mold - Google Patents

Description

The present invention uses a mold in which a material that melts by heating (hereinafter referred to as "heat-melted material") such as various synthetic resins is injected into a mold, and after solidification, the product is taken out and molded. It relates to a molding method, and more particularly to a molding method and a mold for simultaneously molding an article composed of at least three constituent members having an inner frame and an outer frame and a slide member between them.

For example, a mirror may be provided on the back surface of a sun visor provided on the upper edge of the windshield in front of the driver's seat or passenger's seat of a vehicle.
The mirror provided on the back surface of the sun visor is usually provided with a slide member on the front side of the mirror, which is slid to the right or left to expose the mirror.

The mirror frame body with the slide member is composed of an inner frame, an outer frame, and a slide member that slides left and right between them. It is what has been done.
The mirror is fixed to the back surface side of the slide member in the inner frame.

In the conventional fixed frame body of the mirror, the three constituent members of the inner frame, the outer frame, and the slide member are each molded by using a mold using a thermoplastic resin or the like, and after each of them is released from the mold, these are formed. The assembly was performed by combining the three components.
Further, as an article other than the mirror frame body, a frame body used for an opening / closing part of a storage part for storing various home appliances, a cord of a personal computer, and the like can be mentioned.

In the present invention, the individually molded inner frame, outer frame, and slide member are simultaneously molded using a mold, and a mold configured so that these three constituent members can be combined at the time of mold release is provided. The challenge is to devise a molding method for molding using.
Until now, there has been no molding method using such a mold.

The article to be molded in the present invention is composed of three constituent members as described above, but these three constituent members are composed of at least three constituent members, and other constituent members are added 4. It can also be applied to articles made of the above constituent members.

In order to solve the above-mentioned problems, the first aspect of the present invention is a molding method for producing an article by molding a heat-melted material using a pair of dies of an upper die and a lower die. From the inner frame located on the lower back surface side, the outer frame located on the front surface side of the inner frame and united with the inner frame, and the slide member that can slide left and right between the inner frame and the outer frame. The article composed of these at least three constituent members can be simultaneously molded together by using the pair of upper and lower dies and a pair of molding slide dies located in the middle thereof, together with the lower die. The inner frame is formed between the slide mold, the slide member is formed inside the pair of slide molds, and the outer frame is formed between the upper mold and the slide mold, and the outer frame is formed. The frame and the inner frame are present at overlapping positions when viewed from the protrusion direction, and at least a part of the slide member is present inside the outer frame and the inner frame when viewed from the protrusion direction . The pair of slide molds are slid in opposite directions to separate the upper and lower molds, and then project from the lower side to the upper side to separate the molds, whereby the at least three constituent members are united into one. It is a method of simultaneous molding of an article composed of three constituent members including a slide member using a mold, which is characterized in that it is assembled as one article in the assembled state.

The second aspect of the present invention is, in the first aspect of the present invention, a method for simultaneously molding an article composed of three constituent members including a slide member using a mold, wherein the heat-melting material is a synthetic resin. Is.

The third aspect of the present invention is a mold used in a molding method in which a heat-melting material is injected into a mold consisting of an upper mold and a lower mold to form an article , and the article is at the bottom. It consists of an inner frame located on the back surface side, an outer frame located on the front surface side of the inner frame and united with the inner frame, and a slide member that can slide left and right between the inner frame and the outer frame, and at least these. An article composed of three constituent members is simultaneously molded together using the pair of upper and lower dies and a pair of molding slide dies located in the middle thereof, and between the lower die and the slide die. The inner frame is formed, the slide member is formed inside the pair of slide molds, and the outer frame is formed between the upper mold and the slide mold, and the outer frame and the inner frame are formed. The pair of slide dies are left and right after the molding is completed, and at least a part of the slide members are present inside the outer frame and the inner frame when viewed from the protrusion direction. By sliding in the opposite direction to separate the upper and lower molds, and then projecting from the lower side to the upper side and releasing the mold, the at least three constituent members are united into one article as an article. It is a mold used for a method of simultaneous molding of an article composed of three constituent members including a slide member using a mold, which is characterized by being assembled.

The first aspect of the present invention is a molding method for producing an article by molding a heat-melting material using a set of dies of an upper die and a lower die, wherein the article is the bottom back surface. It is composed of an inner frame located on the side, an outer frame located on the surface side of the inner frame and united with the inner frame, and a slide member that can slide left and right between the inner frame and the outer frame, and these are at least three. An article composed of one component can be simultaneously molded by using the pair of upper and lower dies and a pair of molding slide dies located in the middle thereof, and after the molding is completed, the pair of molding dies are formed. A state in which the three constituent members are united by sliding the slide mold in the opposite directions to separate the mold from the upper mold and the lower mold, and then projecting from the lower side to the upper side and releasing the mold. It will be assembled as one article.
As described above, in the present invention, unlike the conventional molding method, the individual constituent members are not individually molded, but at least the above three constituent members are simultaneously molded, and these three constituent members are integrated at the time of mold release. It will be possible to combine them into one article.

In the second aspect of the present invention, the heat-melting material is limited, and it is specified that the heat-melting material is a synthetic resin.

In the third aspect of the present invention, the mold used in the molding method according to the first invention is specified, and the effect thereof is the same as that of the first invention.

The outer frame of the product molded by the molding method according to the present invention is shown, (A) is a plan view, (B) is a front view, and (C) is a side view. A slide member of a product molded by the molding method according to the present invention is shown, in which (A) is a plan view, (B) is a front view, and (C) is a side view. The inner frame of the product molded by the molding method according to the present invention is shown, (A) is a plan view, (B) is a front view, and (C) is a side view. It is explanatory drawing which illustrates the molding method which concerns on this invention, (A) is the plane explanatory drawing, (B) is the front explanatory drawing, and (C) is side surface explanatory drawing. It is explanatory drawing which shows the molding method of this invention, (A) is the front explanatory drawing which shows the state which the slide mold was separated, (B) is the next step, the molded product is a mold release at the same time. It is a front explanatory view which shows the combined state.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1A and 1B show an outer frame of a product molded by the molding method according to the present invention, in which FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view.
2A and 2B show a slide member of a product molded by the molding method according to the present invention, in which FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view.
3A and 3B show an inner frame of a product molded by the molding method according to the present invention, in which FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a side view.

According to FIGS. 1 to 3, an article composed of three components molded by the molding method according to the present invention, that is, in the present embodiment, is provided on the upper edge of the front windshield of a driver's seat or a passenger's seat of a car. A mirror frame for installing a mirror on the back surface of the sun visor is shown (hereinafter, an article composed of these three components is referred to as a "mirror frame").

What is shown in FIG. 3 is an inner frame 11 arranged on the back surface side at the bottom of the mirror frame body, and what is shown in FIG. 1 is located on the front surface side of the inner frame 11. The outer frame 13 is combined with the inner frame 11.
What is shown in FIG. 2 is a slide member 12 that can slide left and right between the inner frame 11 and the outer frame 13.

The slide member 12 is located in the gap 13c between the inner frame 11 and the outer frame 13, and the ridge portion 12t provided in the vertical direction on the left side of the figure on the front surface side of the slide member 12 is hooked on the fingertips to the left and right. It can be slid to.
Due to the presence of the ridge portion 12t, the slide member 12 does not fall off from the gap 13c between the outer frame 13 and the inner frame 11.

The mirror M is attached to the back side of the through hole portion 11h in the center of the inner frame 11 shown in FIG. In FIG. 3, it is attached to a portion (M) surrounded by a rectangular broken line surrounding the through hole portion 11h.
The center of the outer frame 13 shown in FIG. 1 is also a through-hole portion 13h, and the mirror M appears by sliding open the slide member 12 shown in FIG. 2 in the through-hole portion 13h, and the mirror is used. You will be able to do it.

The upper frame body 13u and the lower frame body 13s of the outer frame 13 shown in FIG. 1 are provided with two engaging claw portions 13n and 13n, respectively.
Two engaging holes 11e and 11e are provided in the upper frame 11u and the lower frame 11s of the inner frame 11 shown in FIG. 3, respectively, and the outer frame 13 is provided in these engaging holes 11e. The engaged claws 13n are fitted to each other, and both are united.

When the inner frame 11 and the outer frame 13 are combined, the slide member 12 located in the middle thereof is arranged between them and combined, so that these three constituent members, that is, the inner frame 11, the slide member 12, and the outer frame 13 are combined. A mirror frame consisting of is completed.

4A and 4B are explanatory views illustrating the molding method according to the present invention, in which FIG. 4A is a plan explanatory view, FIG. 4B is a front explanatory view, and FIG. 4C is a side explanatory view.
In the molding method according to the present invention, three molds are used.
That is, the upper mold 23 at the top, the lower mold 21 at the bottom, and the slide molds 22a and 22b located between these two molds.

The slide mold located in the middle is composed of left and right slide molds 22a and 22b, and is separated into two left and right at the time of mold release as shown by arrows in the figure.
The inner frame 11 shown in FIG. 3 is formed by the lower mold 21 and the slide dies 22a and 22b, and the heat-melting material is injected from the gate G3.

The slide member 12 shown in FIG. 2 is molded by the pair of slide dies 22a and 22b, and the heat-melting material is injected from the gate G2.
The outer frame 13 shown in FIG. 1 is formed by the upper mold 23 and a pair of left and right slide dies 22a and 22b, and the heat-melting material is injected from the gate G1.

The heat-melted material is injected from each of the gates G1, G2, and G3, and the material is released after being solidified. The state is shown in FIG. 5 below.
5A and 5B are explanatory views showing the molding method of the present invention, in which FIG. 5A is a front explanatory view showing a state in which the slide mold is separated to the left and right, and FIG. 5B is the next step of molding. It is a front explanatory view which shows the state which the product was united at the same time as the mold release.

After the heat-melting material is injected into the mold and solidified, the pair of slide molds 22a and 22b located in the middle of the upper mold 23 and the lower mold 21 are slid left and right from the upper mold 23 and the lower mold 21. To separate.
At the same time, each component formed by the push-up member is projected from the bottom to the top and released from the mold, so that the engaging claws of the outer frame 13 are contained in the engaging holes 11e of the inner frame 11. 13n fits and coalesces.

At the same time as the combination of the inner frame 11 and the outer frame 13, the slide member 12 in the middle thereof is slidably arranged and combined in the gap between the inner frame 11 and the outer frame 13.
In this way, when the mold is released, the mirror frame bodies 10 are united and integrally molded in a state where the assembly is completed.

Although it is not shown in the figure that the outer frame 13 does not fall downward when the left and right slide molds 22a and 22b are separated to the left and right, the upper frame 13u and the lower frame 13s of the outer frame 13 do not fall downward. This is because an undercut is provided between the engaging claws 13n and 13n provided in each of the above, and the lower die 21 is in a state of riding on the edge.

Further, the fact that the slide member 12 does not fall downward when the left and right slide molds 22a and 22b are separated to the left and right is not shown in the figure, but the two slide members extend from the lower side to the upper side of the lower mold 21. This is because the support rods of the above are in contact with the recesses provided in the central portion of the back surface of the slide member 12.
The configuration of these molds utilizes the conventional mold configuration method.

Although the embodiments of the present invention have been described above, in the present invention, various design changes can be made to the embodiments as follows.
First, in the molding method of the present invention, a synthetic resin such as a thermoplastic resin or a thermosetting resin can be used as a heat-melting material, and basically the injection molding method is used.

The product to be molded consists of at least three constituent members like the mirror frame body, and products other than the mirror frame body can also be molded as long as a slide member that can slide left and right is incorporated in the middle portion thereof. Is.
For example, a frame body used for an opening / closing part that can be opened / closed by a slide member of a storage part for storing various home appliances, a cord of a personal computer, or the like can be mentioned.

That is, if the mirror is not incorporated in the inner frame, the article composed of at least three constituent members can be used as one component as an entrance portion, a lid portion, or an opening / closing portion of some storage portion.
Then, it is possible to add to these at least three constituent members and further form other constituent members at the same time.

Further, the size and shape of the molded article can be freely changed as appropriate, and if the article has a slide member sandwiched between the inner frame and the outer frame, the molding method according to the present invention can be used. It will be possible to manufacture.

As described above, in the present invention, when molding is completed using the mold, the product composed of at least three constituent members having a slide member that can slide left and right in the intermediate portion is assembled by the at least three constituent members. In other words, it has been possible to provide an integral molding method and a mold for an article composed of at least three constituent members that do not require an assembly step.

10 Mirror frame 11 Inner frame 11e Engagement hole 11h Through hole 11s Lower frame 11u Upper frame 12 Slide member 12t Protrusion 13 Outer frame 13c Gap 13h Through hole 13n Engagement claw 13s Lower frame 13u Upper frame body 21 Lower mold 22a, 22b Slide mold 23 Upper mold G1, G2, G3 Gate M mirror

Claims (3)

In a molding method for manufacturing an article by molding a heat-melting material using a set of molds of an upper mold and a lower mold.
An inner frame in which the article is located on the back surface side at the bottom, an outer frame located on the front surface side of the inner frame and combined with the inner frame, and a slide that can be slid left and right between the inner frame and the outer frame. It consists of parts and
Articles composed of these at least three constituent members can be simultaneously molded together using the pair of upper and lower dies and a pair of molding slide dies located in the middle thereof.
The inner frame is formed between the lower mold and the slide mold, the slide member is formed inside the pair of slide molds, and the outer frame is formed between the upper mold and the slide mold. The outer frame and the inner frame are present at overlapping positions when viewed from the protrusion direction, and at least a part of the slide member is present inside the outer frame and the inner frame when viewed from the protrusion direction.
After the molding is completed, the pair of slide dies are slid in the opposite directions to separate the upper and lower dies.
Then, by projecting from the lower side to the upper side and releasing the mold, the slide member using the mold is characterized in that at least the three constituent members are assembled into one article in a state of being united into one. A method for simultaneously molding an article composed of three constituent members. The method for simultaneously molding an article composed of three constituent members including a slide member using the mold according to claim 1, wherein the heat-melting material is a synthetic resin. A mold used in a molding method for molding an article by injecting a heat-melting material into a mold consisting of an upper mold and a lower mold.
An inner frame in which the article is located on the back surface side at the bottom, an outer frame located on the front surface side of the inner frame and combined with the inner frame, and a slide that can be slid left and right between the inner frame and the outer frame. It consists of parts and
Articles composed of these at least three constituent members are simultaneously molded together using the pair of upper and lower dies and a pair of molding slide dies located in the middle thereof.
The inner frame is formed between the lower mold and the slide mold, the slide member is formed inside the pair of slide molds, and the outer frame is formed between the upper mold and the slide mold. The outer frame and the inner frame are present at overlapping positions when viewed from the protrusion direction, and at least a part of the slide member is present inside the outer frame and the inner frame when viewed from the protrusion direction.
After the molding is completed, the pair of slide dies are slid in opposite directions to separate the upper and lower dies.
After that, the slide member using a mold is characterized in that the at least three constituent members are assembled into one article by projecting from the lower side to the upper side and releasing the mold. A mold used for a method of simultaneous molding of an article composed of three constituent members.

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