JP3378048B2 - A mold device that integrates the injection molding process and the assembly process - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE invention, a plurality of mold an apparatus
The bearings are made of synthetic resin.
Made with a mold that injection-molds a part and the part created with it
Injection molding process and assembly consisting of a mold to be assembled as a product
The present invention relates to a mold device that is integrated with a process.

[0002]

2. Description of the Related Art A conventional mold such as a mold for injection molding is usually composed of a fixed mold and a movable mold (or a female mold and a male mold, an upper mold and a lower mold), and both of them. The molded product is taken out by pouring hot water into the cavity in which the two are united, cooling it, and then removing the mold.When it is necessary to assemble a large number of parts, they are transported to another place and the work is performed. Done.

In the case of bearings, those made of synthetic resin are not used, and most of them are made of iron. Even in this case, several dies are used to make one bearing, and many bearings are used. I made the parts and assembled them into a single bearing.

[0004]

In the conventional mold, not only all of the parts are manufactured by using several molds as described above, but also the assembly process is separate, so that the number of processes is large and the time is long. There is a problem that the cost is high, and it is unavoidable that the cost is high especially in the case of iron products.

Further, for example, iron bearings are not suitable for mass production as described above, and are also not suitable for weight reduction as a recent tendency due to their heavy weight, and are apt to corrode and have problems in durability. there were.

The present invention has been made in view of the above circumstances.
( EN ) Provided is a mold device in which an injection molding process and an assembling process are integrated so that all parts of a product can be created and assembled by one device in which a plurality of molds are integrated. It was intended.

[0007]

To achieve the above object, the present invention is an assembly of a plurality of injection-molded parts.
A mold device for manufacturing a product consisting of parts from
Write set of the fixed mold as injection mold together forming the components of a product, the parts taken out of the mold
It consists of a combination with at least two movable molds that assemble the product by press- bonding, and for this combination, the fixed mold and the spindle of the rotating disk are provided in parallel on the fixed substrate. A movable side mold is attached to the turntable so as to replace the fixed side mold with the rotating side mold, and the movable side mold on the side to be mated with the fixed side mold has already been subjected to the above-mentioned procedure. Assembling all the assembled parts by press binding is performed by the fixed side mold and the simultaneous mold clamping operation, and the movable side mold on the side detached from the fixed side mold has already been assembled by the mold clamping operation . About product removal and subsequent manufacturing
It is characterized in that it is configured to be able to incorporate new parts of.

The product is a bearing made of wear-resistant synthetic resin, and the lower die of the movable side mold for assembling it has a holding pin which is a center for assembling inner rings, spacers, rollers and outer rings as parts. If the support pin of the roller is incorporated and is biased in the protruding direction by the spring so that the support pin can be retracted, it is more suitable for the purpose.

[0009]

According to the above construction, in a state where the fixed-side mold and the movable-side mold are united on one surface, simultaneous mold clamping allows the fixed-side mold to perform injection molding of product parts, and the movable-side mold. Then, it is assembled. Further, on one side, the product is taken out from the movable side mold and the new parts of the product following it are incorporated, and in this way, the plurality of movable side molds become the fixed side mold. The products are manufactured in one mold device while being replaced.

In other words, it is a rotary type, and the movable side mold is easily replaced by the rotation of the turntable, and the work on at least one surface is automatically performed, while the product is taken out and parts are Since it is built in, it is easy to work and does not take much time.

[0011]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows a mold apparatus M according to the present invention, and FIG. 2 shows a synthetic resin bearing P molded by this.
Indicates.

The mold apparatus M is, so to speak, a vertical injection molding machine and uses one fixed-side mold 1 and two movable-side molds 3 and 3 which are alternately replaced with each other. The fixed mold 1 is attached to the substrate 5. This fixed mold 1
In, all parts of the bearing P, that is, the inner ring 7, the spacer 8, the rollers 9, and the outer ring 10 are injection-molded.

The attachment of both movable molds 3 and 3 is a rotary type, and the support shaft 11 is attached to the fixed substrate 5.
And a movable plate 3 which is rotatable about a support shaft 11 at its lower end so as to be vertically movable. Both movable molds 3 and 3 are fixed to the stationary mold 1, and both are fixed to the fixed mold 1. It is arranged to be combined with. Therefore, the fixed mold 1 and the movable mold 3 below the fixed mold 1 are simultaneously clamped by the upward movement of the turntable 13.

As shown in FIGS. 3 and 4, both movable molds 3 and 3 are composed of an upper mold 15 and a lower mold 17, and the lower mold 17 is fixed to the turntable 13. Inner ring 7, spacer 8, roller 9, outer ring 10 in the fixed mold 1
In the movable side mold 3 that is integrated with the above-mentioned molding, the inner ring 7, the spacer 8, the roller 9, and the outer ring 10 which are pre-assembled molded products are integrated by pressing.

A holding pin 19 is provided in the center of the lower mold 17 of the movable dies 3, 3 via a sleeve 18, and the holding pin 19 has a tip protruding toward the upper mold 15. The support pins 21, 21, ... Of the roller 9 are inserted through the sleeve 18 around the holding pin 19. further,
On the surface facing the upper mold 15, a cavity is provided around the holding pin 19 for accommodating the inner ring 7, the spacer 8, the rollers 9, and the outer ring 10 parts. The upper die 15 with respect to the lower die 17 is provided with a projecting hole 23 for the holding pin 19, and thereby positioning is performed during die clamping.

When the movable side mold 3 is disengaged from the fixed side mold 1 (in the movable side mold 3 on the left side of FIG. 1), the parts injection-molded by the fixed side mold 1 are replaced with the inner ring 7, the spacers 8, The rollers 9 and the outer ring 10 are fitted in this order as shown in FIG. The support pin 21 is for holding the roller 9 at a predetermined position, and the spacer 8 has an insertion hole 8a formed therein and the roller 9 has an insertion hole 9a formed therein.

Due to the structure as a bearing, the inner ring 7 and the outer ring 10 are provided with recesses 25 and 27 into which the rollers 9 are fitted ,
Among them, the concave portion 25 of the inner ring 7 is an annular rolling groove of the roller 9. Further, the outer ring 10 has the recess 27 opened at one end.
The opening 8 has a stepped shape that is crimped to the spacer 8.

Due to such a shape of the inner ring 7, when the parts are assembled, the vertical support pins 21 hinder the fitting of the rollers 9 in the annular recess 25, but the support pins 21 are once lowered against the elastic force of the spring 29. As a result, the obstruction is removed so that the support pin 21 is fitted in the annular recess 25, and then the support pin 21 is inserted into the roller 9 by the elastic force of the spring 29. Also, the outer ring 1
Since 0 cannot be manually fitted into the spacer 8, it is left in a floating state before the caulking.

In the movable side mold 3 which is separated from the fixed side mold 1,
In this way, inner ring 7, spacer 8, roller 9, outer ring 1
Since 0 is incorporated (state of FIG. 3), when the rotary platen 13 is combined with the fixed mold 1 instead of the other movable mold 3, the fixed mold 1 and the fixed mold 1 are clamped at the same time. The outer ring 10 is swaged to the spacer 8 by the operation.

As a result, the assembly of the bearing P is completed, so that the movable side mold 3 is replaced with the other, and the bearing P completed from the stationary side mold 1 is completed.
From the inner ring 7, spacer 8, roller 9,
The outer ring 10 is incorporated.

By repeating the above operation, in one mold apparatus M, parts (inner ring 7, spacer 8, roller 9, outer ring 1)
The completed bearing P is manufactured by performing the molding process (0) and the assembling process.

In order to obtain the roundness and concentricity of the injection-molded product, the mold device M has an elliptical shape. In addition, each inner ring 7, spacer 8, roller 9, outer ring 1
Since the wear-resistant raw material (PoM, PA, etc.) is used for molding 0, the durability is not inferior to that of the metal bearing.

[0024]

As described in the foregoing, according to the present invention, according to one device in which a plurality of molds are aggregated, the injection molding of each part of a product, the incorporation and assembly of its components together <br/> Since it is carried out, it has an excellent effect that work efficiency is good, and work efficiency can be improved, and energy saving, labor saving, and space saving can be achieved at the same time in manufacturing a synthetic resin product including many parts.

In particular, when the product is a bearing made of a wear-resistant synthetic resin, supporting and assembling of a roller as a part of the bearing are properly performed in the movable side mold, and the assembly by press bonding is surely performed. Therefore, the above effect is particularly remarkable. In addition, the manufactured bearing is not inferior in function to the one made of iron, and has the excellent effect of being light in weight.

[Brief description of drawings]

FIG. 1 is an explanatory view of a mold device according to the present invention seen from the front.

FIG. 2 is a sectional view of a bearing showing an example of a product manufactured by the mold device of the present invention.

FIG. 3 is a cross-sectional explanatory view showing a movable side mold in a manner of incorporating parts.

FIG. 4 is a cross-sectional explanatory view showing the movable side mold in a product assembling procedure.

[Explanation of symbols]

M Mold that integrates injection molding process and assembly processapparatus Bearings as P products 1 Fixed mold 3 Movable mold 5 fixed board 7 inner ring 8 spacers 9 roller 10 outer ring 11 spindles 13 turntable 17 Lower mold 19 Holding pin 21 Support pin 29 springs

Claims (2)

(57) [Claims] 1. From assembly of a plurality of injection-molded parts
A mold apparatus for manufacturing the following product from parts, and a fixed-side mold as an injection mold for molding each part of the product together with a part taken out from the mold. Built-in plug
It consists of a combination with at least two movable molds that assemble the product by binding without binding , and for this combination, the fixed mold and the spindle of the turntable are installed in parallel on the fixed substrate and rotated. the board, in its rotation by each other by attaching the movable mold so as engage in reverses the functions with respect to the fixed side mold, a movable mold of the fixed mold and mating side, front
Serial to to perform the already fixed mold and simultaneous clamping operation the assembly by pressing the binder of all products built it has been made as in the movable side mold on the side out of the fixed mold, the mold clamping operation already the removal of products being assembled, new for products manufactured subsequently in the
A mold that integrates the injection molding process and the assembly process, characterized by being configured so that various parts can be incorporated.
Equipment . 2. The product is a bearing made of wear-resistant synthetic resin, and a lower mold of a movable mold for assembling the product is
A holding pin that serves as a center for assembling the inner ring, the spacer, the roller, and the outer ring as parts, and a support pin for the roller are incorporated, and the support pin is biased in a protruding direction by a spring so that the support pin can be retracted. A mold apparatus in which the injection molding process and the assembling process according to claim 1 are integrated.