JPS61217226A - Molding and assembling device - Google Patents

Abstract

PURPOSE:To eliminate restriction of configuration of product and facilitate the automation of assembling in subsequent process by a method wherein first component is connected by an endless runner and the first component and second component are moved in a mold from the molded position thereof, thereafter, are assembled. CONSTITUTION:The component 1 is molded integrally with the runner 11 which serves as the endless runner. On the other hand, the component 2 is molded by a side core 31 and the main body 70 of fixed side mold so as to have a side gate structure. The component 2 is moved to a place immediately below a shaft 10 of the component 1 molded previously and is fitted to the shaft 10 of the component 1. According to this method, the second component 2 is moved to the position, whereat it is assembled with the first component, by the side core for molding, therefore, there is not limit with respect to the configu ration of the component and the already assembled component is connected by the continuous runner, therefore, the automation of assemblage in the subse quent process may be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a molding and assembling apparatus for molding a plurality of parts and assembling both parts in a mold.

[Background Art 1] As a mold for molding and assembling a plurality of parts in the same mold, there is a mold called a composite mold as shown in FIG. 21. This is done by molding multiple parts 1 and 2 on the same shaft, and after opening the side core 3, the parts 2 are moved in the axial direction by the sleeve 5 using the core pin 4 as an aid, so that the two parts fit together. Although there are some methods that perform joint assembly, this structure has restrictions on the product shape and is limited to items such as gear blocks in which the target parts fit together coaxially. Also, when the gear block is taken out from the mold, it is taken out as a single gear block.
In order to automate the assembly of the next process, a separate positioning and supplying device is required, which is an obstacle to simplifying the assembly.

[Objective of the Invention 1 The present invention was made in direct view of the above, and its purpose is to create a product that has no restrictions on the shape of the product, does not limit the target parts, and moreover, has completed assembly. teeth,
It is an object of the present invention to provide a molding and assembling device that can easily meet the requirements of an, M, and I''l in the next process.

[Disclosure of the Invention 1 The present invention provides a molding and assembling apparatus for molding a first part, molding a second part to be assembled to the first part, and assembling both parts in a mold. While forming an integral runner, the first
a molding unit that connects each runner of the part to form an endless runner; a feeding unit that intermittently sends out the first part;
It is characterized by having a side core supplied to the assembly position with the parts and an assembly means for assembling the first part and the second part, and the first part is connected by an endless runner. In addition, the first part and the second part are assembled after being moved within the mold from their molding position.

The present invention will be described in detail below based on the illustrated embodiments.
The figure shows 2f! molded in the same mold in this example! Parts 1 and 2 of Part II are shown, in which part 1 is a Hertz switching lever in a watch, and parts 2 and 2 are planetary gears supported by shafts io and io of part 1, respectively. Both parts 2, 2 are molded as individual parts and then assembled into part 1. When part 1 is molded, a runner 11 called a so-called endless runner is integrally molded, and each part 1 is assembled into part 1. are molded one by one,
The parts 1 are connected to each other in this runner 11, so that they are continuous.

FIG. 2 schematically shows the operation during assembly after molding in this embodiment. Part 1 is molded at a higher position than parts 2, 2, and then sent in the direction A in the figure. Part 2,
After molding, part 2 is sent in the direction perpendicular to the feeding direction of part 1, and is then pushed up, so that axis 1 of part 1
0 is fitted.

Figures 3 to 5 show the movable side members of the mold. In the figure, 9 is a runner for injection of molding resin, 31 is a side core for molding part 2, and 32 is a runner 11 that becomes an endless runner in part 1.
33 is a side core for molding the part 1, and the receivers of these are arranged on the plate 36,
In particular, the slide core 32 has a movable mold plate 34 on the plate 36.
and a movable side mold plate 35. In the figure, 40 is the movable side mounting [1, 4L42 is the ejector turbine plate, 43 is the stock plate, and the movable side template 3
The ejector bin 54 for component 5 and the stock lift 51 are attached to the stock plate 43, the ejector bin 53 for component 1 is attached to the ejector turbine plate 42, and the ejector bin 52 for component 2 is attached to the ejector turbine plate 41.
A pilot bin 50 for positioning the part 1 when assembling the parts 1 and 2 is held on the movable mounting plate 40.

First, the molding of part 1 will be explained. As mentioned above, the runner 11 to form an endless runner is integrally molded via the resin inflow part 19, and
The runner 11 is formed in a slide core 32, as shown in FIGS. 6 to 9. The runner 11 molded at the same time as the part 1 is the slide core 3
The runner 11, which is moved by the movement of the part 2 and is formed simultaneously with the molding of the next part 1, overlaps the already molded runner 1.
1, and between the fixed side mold plate 61 and the slide core 32, there are a round hole molded bottle 63 and a square hole formed bottle 62 held by the fixed side mounting plate 60. The runner 11 has a round hole 13 and a square hole 12 formed therein. After this molding and mold opening, when the movable side mold plate 35 rises and the part 1 is pushed upward, the slide core 32 is attached to the movable side mold plate 35 together with the hydraulic cylinder 8 for driving the slide core 32. Therefore, the part 1 rises while holding the runner 11.

The slide core 32 moves forward under the drive of the hydraulic cylinder 8, then descends together with the movable mold plate 35, and then retreats.At this time, as shown in FIG. Core bin 64 protruding from 61
is fitted into the round hole 13 of the runner 11, so the runner 11 and the part 1 remain stopped at the position to which they were sent. In this state, the square hole 12 of the runner 11 is aligned with the four parts 69 of the stationary side template 61, and the next part 1
The runner 11 formed at the same time during the molding of the square hole 1
2 and a connecting portion 14 using a recess 69 at one end, the parts 1 that are successively molded are connected at the runner 11.

Here, if the endless runner is made of polyacetal, the molded resin and the molten resin will not bond, so as shown in Figure 17(e), the molded resin is sandwiched between the molten resin and the molten resin. Ori,
Furthermore, in order to form a part of the molded runner 11 into a cavity, the side wall is made longer than the resin inflow portion to absorb the resin, as is clear from FIG. 7(e).

Furthermore, since the runner 11 returns into the cavity after being ejected from the cavity, the side wall has a large slope.

On the other hand, as shown in FIGS. 10 and 11, the component 2 is molded by a side core 31 and a stationary mold body 70 with a side gate structure. The mold is opened after the core bin 71 is first pulled out, and then, as the side core 31 moves, the part 1 that has been molded several cycles before is opened.
It moves directly below the axis 10 at . At this time, the date is disconnected. In order to prevent the part 2 from being carried away to the stationary mold body 70 side, the part 2 is provided with an undercut portion 21 as shown in FIG. 12.

Part 1 and part 2 are assembled as shown in fpJ13 to Fig. 15. That is, by moving the L dimension of the ejector turbine plate 41 in FIG. 4, the component 2 is fitted onto the pongee 10 of the component 1, as shown in FIG. 13. After this, the ejector turbine plate 41
．． 42 and the stock plate 43 move together to eject parts 1 and 2 as shown in FIG. 192 is the 15th
As shown, each ejector bottle 53 and 52 are separated from each other. The aforementioned advance of the slide core 32 is performed in the state shown in FIG. 15.

At the lower end of the shaft 10 in the part 1, there are
As shown in FIG. 7, elasticity is provided by forming the through hole 17, and an undercut portion 18 is formed on the outer peripheral surface, and when the component 2 is fitted onto the shaft 10, The undercut portion 18 prevents the component 2 from falling out when being extracted.・Instead of the through hole 17, the first
By providing a notch 16 as shown in FIG. 8, the undercut portion 18 may be made to have elasticity.

In addition, FIGS. 19 and 20 show a 7-piece material that is sequentially processed in the sheet metal mold by feeding the connected parts 1 with runners 11 as endless runners into the sheet metal mold. When removing the sheet metal part 91 from the part 90, the sheet metal part 81 is press-fitted or swaged into the part 1. Since parts assembled at predetermined intervals can be taken out continuously, and the endless part 1 is fed into the press mold, positioning is easy and the feeding speed is fast. This has the advantage that there is no need to reduce the processing speed.

[Effects of the Invention] As described above, in the present invention, since the molding of the first part and the tIS'2 part assembled to the first part and the assembly of both are performed in the mold, the assembly is easy. Not only can costs be reduced by reducing the number of man-hours, but also there is no mistake in inserting parts because they are assembled inside the mold. Since the side core for molding is moved to the assembly position with the first part, there are no restrictions on the shape of the parts, and it can be applied to molding and assembling various parts. , because they are connected by mutually connected and continuous runners in the first part, it can easily be adapted to the automation of assembly in the next process.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are a plan view and a front view of parts of an embodiment of the present invention, FIGS. Figure 3 is a plan view, Figure 4 is a vertical cross-sectional view of the stairs, Figure 5 is a cross-sectional view, and Figure 6 (aHb).
are a plan view and a cross-sectional view of the first part molding section, FIG. 7(a)
~(e) is a plan view and longitudinal cross-sectional view of connected runners, A
-A sectional view, B-B sectional view and C-C line sectional view, Fig. 8 is a longitudinal sectional view of the runner forming part, Fig. 9 is a longitudinal sectional view of the runner forming part during mold clamping, Fig. 10 The figure is a plan view of the second part forming section, FIGS. 11(a) and 11(b) are cross-sectional views showing the operation of the runner forming section, and FIG. 12 is an enlarged sectional view of the second part.
Figures 13 to 15 are cross-sectional views showing the assembly operation;
Figure 6 (,) (b) is a front view and a bottom view of the shaft of the first part,
Fig. 17 is a sectional view showing the assembled state of the first part and the second part, Fig. 18 is a front view showing another example of the shaft, and Figs. 19 and 20 are parts with endless runners and sheet metal parts. FIG. 21(a) is a plan view and a side view showing the assembled state with
(bHc) is a sectional view showing the operation of the conventional example, where 1 is the first part, 2 is the fA2 part, 11 is a runner that becomes an endless runner, 31 is a side core for molding 12 parts, and 32 is the first part. This shows a slide core for molding runners and for movement. Agent Patent Attorney Ishi 1) Ai Figure 7 Figure 4 dll Figure 5 Figure 8 Figure 161 Figure 9 Figure 12 Figure 15 (b) Figure 16 Figure 17 CG) lr? ! ” i lit.

Claims (1)

[Claims] (1) In a molding and assembly device that molds a first part, molds a second part to be assembled to the first part, and assembles both parts in a mold, a runner is formed integral with the first part, and A molding unit that connects each runner of the first part to be molded in sequence to form an endless runner, a feeding means for intermittently feeding out the first part, and a molded second part for molding the second part. A molding and assembling device comprising: a side core that supplies a side core to a position where it is assembled with a first part; and an assembly means that assembles the first part and the second part.