JP2003117953A - Method for integrating resin molded article and integration apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for integrating a resin molded article, capable of keeping the stable capacity of even small-sized members difficult to handle without requiring an exclusive device such as an arranging unit, a feed unit, a gripping device or the like by preventing the staining of the members, the adhesion of waste refuse to the members, the damage of the members or the like in an integration apparatus for the resin molded article formed by integrating three or more members, and the integration apparatus therefor. SOLUTION: A first gear 13 and a second gear 14 are molded by a mold 10 having slide molds 15 and 16 made relatively slidable and movable and the slide molds 15 and 16 are slid and moved by a predetermined interval to increase the interval between the first and second gears 13 and 14 and a third gear 33 is supplied to the space between the first and second gears 13 and 14 to integrate the molded first and second gears 13 and 14 and the third gear 33 on the mold 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling method and an assembling apparatus for resin molded products, and more specifically, molding a plurality of resin molded products with a molding die and supplying an intermediate member to the molding dies. And a method for assembling a resin molded product suitable for use in molding and assembling a gear train, in which a molded resin molded product and an intermediate member are assembled on the molding die. .

[0002]

2. Description of the Related Art Referring to FIG. 12, conventionally, when assembling a gear train 4 in which a plurality of resin gears are assembled, the first gear 1, the second gear 2 and the third gear 3 are individually injected. It is assembled by molding with the molding machines 5, 6 and 7, stocked, conveyed to the assembly process, and placed by hand or by using a dedicated robot at a predetermined position on the dedicated assembly jig 8. Was there. First gear 1, second gear 2 and third gear 3
Are large gears 1a, 2a and 3a and small gears 1b and 2b, respectively.
And 3b are integrally molded, and the small gear 1b of the first gear 1, the large gear 3a of the third gear 3, the small gear 3b of the third gear 3 and the large gear 2a of the second gear 2 are formed. The gear trains 4 are configured by meshing with each other.

The assembling jig 8 comprises a first movable base 9 and a second movable base 10 which are slidably movable toward and away from each other, and the first movable base 9 and the second movable base 10. It is composed of a fixed base 11 arranged between the first base and the first base.
The movable base 9 is formed with a storage chamber 9a for storing the large gear 1a of the first gear 1, and the second movable base 10 is formed with a storage chamber 10a for storing the small gear 2b of the second gear 2. .
Further, the fixed base 11 is provided with a support shaft 11a for rotatably supporting the third gear 3 at its tip.

In the assembly by the dedicated robot, the stocked first gear 1, the second gear 2 and the third gear 3 are aligned in a predetermined direction by the aligning device, and then assembled by the carrying device. It is fed to the jig 8, and the first movable table 9 and the second movable table 10 are slid in a direction in which they are separated from each other, so that the assembly space is supplied to a predetermined position of the assembly jig 8. That is, the first gear 1, the second gear 2 and the third gear 3 are gripped by the gripping device one by one, and the large gear 1a of the first gear 1 is placed in the storage chamber 9a and the small gear 2b of the second gear 2 is placed. After being housed in the housing chamber 10a and fitting the center hole of the third gear 3 to the support shaft 11a, the first movable table 9
And the second movable table 10 are slid inwardly facing each other, so that the first gear 1 and the second gear 2 are respectively moved.
Then, the gear train 4 is assembled by engaging the third gear 3 with each other.

[0005]

In the conventional assembly of the gear trains described above, it is difficult to visually identify each gear if the gears are small in size by manual work.
Further, there is a problem that it is very difficult to grasp and the operability is poor and it is difficult to improve the production efficiency. Moreover, in the assembly by the robot,
Alignment unit for each type of gear to be assembled,
A dedicated assembling jig is required for each of the transport unit and the gripping device and for each gear train to be assembled, and there is a problem that not only an installation space is required for installing these, but also a large equipment cost is required. In addition, the alignment unit, the transport unit, the gripping device, and the dedicated assembling jig have a drawback in that dedicated gears must be manufactured for each gear, or complicated adjustments must be made according to the gears.

Further, since the assembly is carried out through many steps, the gear may become dirty as the gear is handled,
There is a problem that dust adheres and the gear is damaged, which causes a malfunction of the gear and the like, which makes it difficult to secure stable performance.

In view of the above problems, the present invention does not require a dedicated device such as an aligning unit, a transport unit, a gripping device, and the like, and a method and an apparatus for assembling a resin molded product capable of maintaining stable performance. Is intended to provide.

[0008]

The above object of the present invention can be achieved by the following constitutions. In short, the method of the present invention (Claim 1) is a method of assembling a resin molded product by assembling three or more members, and the method is relatively performed in a direction intersecting the opening / closing direction of the upper die and the lower die of the molding die. It is possible to slide
After molding a plurality of members with a molding die including at least one slide mold arranged at a predetermined interval, the slide mold is slid at a predetermined interval to move the plurality of members. And the intermediate member is arranged between the plurality of members, and then the slide mold is slid to the original position to assemble the plurality of members and the intermediate member. To do.

According to the above method for assembling the resin molded product, the member to be assembled is molded by the molding die, the slide mold is moved, and the intermediate member is arranged between the members, and the member is assembled on the molding die. Since they are assembled, it is possible to mold and assemble the resin molded product at the same time, and it is possible to eliminate the need for special devices such as a special alignment unit, a transport unit, and a gripping device. Further, this can greatly reduce the installation space and installation cost of the device.

A method of the present invention (claim 2) is a method for assembling the above resin molded product, wherein the resin molded product is a transmission component including a plurality of gears. It is a thing.

According to the method of assembling the resin molded product, the gear is assembled on the gear train on the molding die in which the gear is molded, without a complicated assembling process. It is possible to prevent dirt, dust adhesion, damage due to scratches, and the like, and it is possible to easily manufacture a gear train having stable rotation performance.

Further, the device of the present invention (claim 3) is a device for assembling a resin molded product by assembling three or more members, in a direction intersecting with the opening and closing direction of the upper die and the lower die of the molding die. A slide die including at least one slide die that is slidably movable relative to the slide die; and an intermediate die for disposing an intermediate member disposed between the die dies. After sliding the mold by a predetermined distance,
The intermediate member is arranged in the intermediate mold, and the slide mold is again slid to the original position to assemble the plurality of members and the intermediate member.

According to the apparatus for assembling the resin molded product having the above-mentioned structure, the molding die is provided with the slide die and the intermediate die, and after the slide die is slid by a predetermined distance, the intermediate die is moved to the intermediate member. Since a plurality of members are arranged by arranging the parts, it is possible to consistently perform from the molding of the members to the assembly with the molding die, and the alignment unit, the transport unit, the gripping device, etc. can be eliminated. it can. This also allows
The troublesomeness of managing those devices is eliminated, and the intermediate stock of members in the alignment and transportation steps can be reduced, and the assembled resin molded product can be manufactured at low cost.

An apparatus of the present invention (claim 4) is an apparatus for assembling the resin molded product, wherein the molding die is provided with an elastic member such that the slide die and the intermediate die can move relative to each other. Are connected to each other via screws, and the slide mold is slid in one direction to move the intermediate mold by a predetermined distance to form an assembly space for arranging the intermediate member between the molding molds. It is characterized in that it is configured to.

According to the apparatus for assembling a resin molded product having the above structure, one slide mold and the intermediate mold are connected by a screw via an elastic member, and one slide mold is slid to move. By moving the intermediate mold by a predetermined distance to form an assembly space for arranging the intermediate member between the two slide molds, the slide moving mechanism can be made compact. It is possible to inexpensively manufacture a complicated molding die that has.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A case in which a gear train is assembled using a gear as a resin molded product according to an embodiment of the method and apparatus for assembling a resin molded product of the present invention shown below will be described. FIG. 1 is a partial cross-sectional front view of the molding die showing a state in which the upper die is opened after the first gear and the second gear are molded, and FIG. 2 shows a state in which the slide die is slid laterally. It is a partial cross-section front view.

First, a gear is molded, and the gear train 30 (see FIG. 11) is used.
The configuration of the molding die 10 for assembling (see) will be described. In FIG. 1, a molding die 10 includes an upper die 11 and a lower die 1.
2 and is a set mold capable of simultaneously injection-molding the first gear 13 and the second gear 14. The lower die 12 is composed of a first slide die 15, a second slide die 16 and an intermediate die 17, which are arranged at predetermined positions of a base 18, respectively. The first slide mold 15 and the intermediate mold 17 are configured to be slidable laterally with respect to the base 18, and the second slide mold 16 is provided.
Is fixed to the base 18.

The first slide mold 15 includes a first gear 13
The second slide mold 16 is provided with a cavity 15a for molding the second gear 14, and the second slide mold 16 is provided with a cavity 16a for molding the second gear 14. First slide mold 15
Has a stepped mounting hole 15b formed in the sliding movement direction, and the screw 19 is loosely fitted in the mounting hole 15b with the screw head 19a housed in the large diameter part of the mounting hole 15b.
The intermediate die 17 and the first slide die 15 are connected to each other by being screwed into the intermediate die 17.

A gap C ₀ is provided between the large diameter bottom portion 15c and the screw head 19a, and the spring chamber 15 is provided on the surface of the first slide die 15 facing the intermediate die 17.
d is provided. In the spring chamber 15d, the intermediate mold 1
A compression spring 20 is provided between the first slide mold 15 and the intermediate mold 17, and a biasing force is applied to the first slide mold 15 and the intermediate mold 17 so as to always separate them.

A cylinder shaft 22 of a cylinder device 21 is connected to the first slide mold 15, and by operating the cylinder device 21, the first slide mold 15 is slid on the base 18. It is designed to let you. The intermediate mold 17 is provided with a thin support shaft 17a at its tip, and a center hole 33a of a third gear 33 described later is provided.
And the third gear 33 is rotatably supported.

When the first gear 13 and the second gear 14 are injection-molded, the cylinder shaft 22 of the cylinder device 21 is extended to press the first slide mold 15, and the first slide mold 15 and the intermediate mold. After the mold 17 and the second slide mold 16 are positioned in close contact with each other, the upper mold 11 is clamped for injection molding. The first gear 13 and the second gear 13 in the close contact state The inter-center distance between each of the shafts 14 and the support shaft 17a of the intermediate mold 17 is set to be the same as the inter-center distance when the gear train 30 is configured.

In FIG. 2, when the cylinder device 21 is operated and the cylinder shaft 22 is pulled in, the first slide mold 1
5 slides on the base 18 in the direction of arrow C, and the screw head 19a eventually contacts the bottom portion 15c of the large diameter portion. Then, the intermediate mold 17 is pulled via the screw 19, slides on the base 18 in the direction of the arrow C, and the respective molds are separated from each other, and a gap is formed between the first slide mold 15 and the intermediate mold 17. C1 and a gap C2 are formed between the intermediate mold 17 and the second slide mold 16.

Next, the operation of this embodiment will be described. Figure 3
11 to 11 are process drawings showing a process of manufacturing the gear train 30 composed of three gears. The first gear 13, the second gear 14, and the third gear 33 that form the gear train 30 are large gears 13a, 14a and 33a and small gears 13b and 14b, respectively.
And 33b are integrally molded, and the small gear 13b of the first gear 13, the large gear 33a of the third gear 33, the small gear 33b of the third gear 33, and the large gear 14a of the second gear 14 are formed. The gear trains 30 are configured by meshing with each other.

A procedure for molding and assembling the gear train 30 will be described with reference to FIGS. First, the molding die 10 is set in the injection molding device 31 (see FIG. 3).
The molding die 10 is composed of an upper die 11 and a lower die 12 in which two cavities 15a and 16a are formed, respectively, as a set die for taking out two gears of a first gear 13 and a second gear 14. (See FIG. 5).

As shown in FIGS. 1 and 5, the cylinder shaft 22 of the cylinder device 21 is extended to extend the first slide mold 1
After pressing 5 to position the first slide mold 15, the intermediate mold 17, and the second slide mold 16 in close contact with each other, lower the upper mold 11 downward to lower the upper mold 11 and the lower mold 11. The mold 12 and the mold are closed and clamped. Thereafter, as shown in FIGS. 3 and 6, the synthetic resin is supplied from the hopper 31a and the molten synthetic resin is injected into the cavities 15a and 16a to form the first gear 13 and the second gear 14. Next, as shown in FIG. 7, the upper mold 11 is lifted upward to open the molding die 10.

As shown in FIG. 2, when the cylinder device 21 is operated to pull in the cylinder shaft 22, the first slide mold 15 slides on the base 18 in the direction of arrow C,
Eventually, the screw head 19a comes into contact with the bottom portion 15c of the large diameter portion, and the intermediate mold 17 is pulled through the screw 19 and the base 18
Slide up in the direction of arrow C. As a result, FIG.
As shown in FIG. 1, the first slide mold 15, the intermediate mold 17, and the second slide mold 16 are relatively separated from each other, and
There is a gap C1 between the slide mold 15 and the intermediate mold 17.
However, a gap C2 is formed between the intermediate mold 17 and the second slide mold 16, and the first gear 13 and the second gear 14 are separated from each other to form an assembly space for the third gear 33. It

Here, as shown in FIG. 9, the third gear 33 separately molded by the injection molding device 32 (see FIG. 4).
Is carried, the center hole is rotatably fitted to the support shaft 17a,
As shown in FIG. 10, the first slide mold 15 and the second slide mold 16 are slid to the original position where they are in close contact with the intermediate mold 17 so that the first slide mold 15 and the second slide mold 16 are relatively close to each other. . By the sliding movement, the first gear 13
Small gear 13b and the large gear 33a of the third gear 33, and the small gear 33b of the third gear 33 and the large gear 14 of the second gear 14.
The gear train 30 is assembled on the molding die 10 by meshing with a.

During assembly, the third gear 33 is rotatably fitted to the support shaft 17a, and the first gear 13 and the second gear
The gear 14 approaches the third gear 33 in the radial direction and meshes with the respective gears. Therefore, even if the gears are out of phase with each other in the rotational direction, the third gear 33 rotates to automatically phase the gears. Is not adjusted so that the teeth of the gears do not interfere with each other, so that the gears can be assembled smoothly without being damaged. Here, it goes without saying that the phases of the cavities 15a and 16a provided in the first slide mold 15 and the second slide mold 16 are set to a phase in which the third gear 33 can be simultaneously engaged.

In the present invention, the resin molded product has been described as a gear, but the present invention is not limited to this, and as long as three or more resin molded product members are assembled,
It may have any shape.

[0030]

As described above, according to the invention of claim 1, the member to be assembled is molded by the molding die, and the slide die is moved to dispose the intermediate member between the members. Since the resin mold product is assembled on the molding die, the resin product can be molded and assembled at the same time, and special devices such as a special alignment unit, a transport unit, and a gripping device can be eliminated. Further, this can greatly reduce the installation space and installation cost of the device.

According to the second aspect of the invention, the gears are assembled to the gear train on the molding die in which the gears are molded without undergoing a complicated assembly process. Therefore, the gears are contaminated during the assembly process. In addition, it is possible to prevent the adhesion of dust and the damage due to scratches, and thereby to easily manufacture the gear train having stable rotation performance.

According to the third aspect of the invention, the molding die is provided with the slide die and the intermediate die, and after the slide die is slid and moved by a predetermined distance, the intermediate member is arranged on the intermediate die. Since a plurality of members are assembled by this method, it is possible to consistently carry out from the molding of the members to the assembly with the molding die, and it is possible to dispense with the alignment unit, the transport unit, the gripping device, and the like. Further, by doing so, it is possible to manufacture the assembled resin molded product at low cost by eliminating the trouble of managing those devices, reducing the intermediate stock of the members in the alignment and carrying steps.

Further, according to the invention of claim 4, the slide mold and the intermediate mold are connected by a screw through an elastic member, and one of the slide molds is slid to move, whereby the intermediate mold is predetermined. Since the assembly space for arranging the intermediate member between the two slide molds is formed by moving the slide mold, the slide moving mechanism can be made compact, and by this, the complex mold having the slide mold can be achieved. The mold can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view of a molding die showing a state in which an upper die is opened after molding a first gear and a second gear according to an embodiment of the present invention.

2 is a partial cross-sectional front view showing a state in which the slide mold in FIG. 1 is slid laterally.

FIG. 3 is a front view showing a state where the molding die is set in the injection molding device according to the embodiment of the present invention.

FIG. 4 is a front view showing an injection molding device for molding a third gear according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view of relevant parts showing a state in which the mold is about to be closed in FIG.

FIG. 6 is a cross-sectional view of essential parts showing a state during injection molding of the first gear and the second gear in FIG.

FIG. 7 is a cross-sectional view of essential parts showing the state of mold opening in FIG. 6;

FIG. 8 is a cross-sectional view of essential parts showing a state in which the slide molds in FIG. 7 are slid so as to be separated from each other.

9 is a cross-sectional view of relevant parts showing a state in which a third gear in FIG. 8 is fitted in an intermediate mold.

FIG. 10 is a cross-sectional view of essential parts showing a state when assembling the gear train in FIG. 9.

11 is a side view showing the assembled gear train in FIG. 10. FIG.

FIG. 12 is a process diagram showing a process of assembling a gear train according to a conventional example.

[Explanation of symbols]

10 Mold 11 Upper mold 12 Lower mold 13 1st gear (member of resin molded product) 14 2nd gear (member of resin molded product) 15 slide mold 16 slide mold 17 Intermediate mold 19 screws 20 Elastic member 33 Third gear (intermediate member)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Junichi Hamamoto             206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Yazaki             Parts Co., Ltd. (72) Inventor Shogo Matsuoka             206-1 Nunobikihara, Haibara-cho, Haibara-gun, Shizuoka Prefecture Yazaki             Parts Co., Ltd. (72) Inventor, Inoue et al.             Yazaki Kei 1-7-1 Yokoi, Shimada City, Shizuoka Prefecture             Ware corporation (72) Inventor Kiyofumi Uchida             Yazaki Kei 1-7-1 Yokoi, Shimada City, Shizuoka Prefecture             Ware corporation (72) Inventor Tomoaki Murayama             Yazaki Kei 1-7-1 Yokoi, Shimada City, Shizuoka Prefecture             Ware corporation F-term (reference) 3C030 AA11 AA15 AA19 DA37                 4F202 CA11 CB01 CC10 CK42 CK52                       CM90 CR06                 4F206 AD35 AH12 JA07 JL02 JM16                       JN25 JN33 JQ81

Claims (4)

[Claims] 1. A method of assembling a resin molded product, comprising assembling three or more members, wherein the resin mold is relatively slidable in a direction intersecting an opening / closing direction of an upper die and a lower die. After molding a plurality of members with a molding die including at least one slide mold arranged at a predetermined interval, the slide mold is slid at a predetermined interval to move the plurality of members. And the intermediate member is arranged between the plurality of members, and then the slide mold is slid to the original position to assemble the plurality of members and the intermediate member. Assembling method for resin molded products. 2. The method for assembling a resin molded product according to claim 1, wherein the resin molded product is a transmission component including a plurality of gears. 3. An apparatus for assembling a resin molded product, which comprises assembling three or more members, which is relatively slidable in a direction intersecting an opening / closing direction of an upper die and a lower die of a molding die. A molding die including at least one slide die and an intermediate die for arranging an intermediate member disposed between the molding dies are provided, and the slide die is slid by a predetermined distance. After that, the intermediate member is arranged in the intermediate mold, and the slide mold is again slid to the original position so that the plurality of members and the intermediate member are assembled together. Assembling device. 4. In the molding die, the slide die and the intermediate die are connected by a screw via an elastic member so as to be relatively movable, and the slide die is slid in one direction. 4. The set of resin molded product according to claim 3, wherein the intermediate mold is moved by a predetermined distance to form an assembly space for disposing the intermediate member between the molds. Attachment device.