JPS5887029A - Molded body for producting plurality of molded part - Google Patents

Abstract

PURPOSE:To obtain the titled molded body capable of protecting the appearance of parts in handling and packaging them, by forming runners into an H-shape, and providing stepped pins higher than knobs at positions adjacent to opposite ends of the runners such that they can be inserted to the back sides of the runner. CONSTITUTION:Pins 10 are provided adjacent the opposite ends of H-shaped runner 7, 9 such that they are higher than the tips 1 of knobs 8, and the pins 10 are provided with pin sections 12 slender than the pin 10. Holes 13 into which the pins 12 can be inserted are provided in the back side of the runners having the pins 10. By cutting the spool 6 at a height lower than the pin 10, they can be stacked such that a plurality of parts can be obtained, and the designed sections of the knobs 8 are positioned inside further than the runners 9 and the pins 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-cavity molded body of molded parts.

Products that have a design function, such as knobs for operating switches in consumer electronic devices, need to be treated with decorative processing to avoid scratches, stains, damage, etc., and maintain their aesthetic appearance. When processing design parts using plastic materials using the molding method, there may be scratches on the appearance of the molded parts during the handling, packaging, transportation, and assembly of individual parts up to the assembly process after molding. Particular care should be taken when handling the parts to avoid possible contamination, damage, etc., and special consideration should be given to the packaging contents when transporting parts. Unfortunately, it costs more than the structure, mechanical parts, etc. The present invention aims to protect the appearance of parts and facilitate easy packaging in handling and packaging. This is based on the premise that the mold is removed from the mold in this state, and used before the product assembly process or by cutting the assembly process tube.

FIG. 1 shows the shape of a single operating knob as an example. 1
2 is the tip of the knob that you press with your finger, 2 is the lever insertion part that is inserted into the switch lever (not shown), and has a square hole for press-fitting. It becomes the design part.

Conventionally, when molding multiple pieces using a plastic material for the operation knob as described above, the layout was as shown in Figures 2 and 3, with the material washed out from the spool 3 placed in the center. The runner 4 is molded in a shape with knobs on both sides, and if many of the same knobs are used in a device, the dart opening 5 should not be cut immediately after molding to reduce assembly man-hours. , a method is used in which the Gutoro 5 is cut before the assembly process or after a plurality of simultaneous assembly processes.

In such a case, it is necessary to package and transport the product with a runner gate, and since it is necessary to protect the design area near the knob tip 1, various packaging contents have been considered (not shown). The contents are complex and increase costs, and when handling parts, care must be taken to avoid scratches, dirt, and damage to the designed parts.

The present invention is an attempt to improve the above-mentioned problems. FIGS. 4 and 5 show the multi-cavity molding shape of the present invention. In the conventional configuration in which the knobs 8 are arranged on both sides of the spool 6 and the nut 7, by providing runners 9 extending outside the row of knobs 8 at right angles from both ends of the runner 70, an H-shaped runner is created. In shaping the runner, a bottle 10 is provided near both ends of the runner so as to be higher than the tip 11 of the knob 8, and a pin 12 which is one step thinner than the bottle 10 is provided on top of the pin 10.

There is also a bottle 12 on the back side of the runner where the pin 10 is provided.
Each hole 13 is longer than the pier 12 and into which a hole can be inserted.

By adopting the structure as described above, by cutting the spool 6 at a position lower than the pin 10, it is possible to stack and connect multiple pieces as shown in FIG. Design Department Hau/Chi9. Pin] will be located inside from 0.

With the above configuration, packaging for resin plating and transportation to the next process, etc. can be stacked in a box, making it possible to avoid packaging using partitions made of different materials inside the box, as in conventional packaging. This has the effect of eliminating the need for materials, reducing packaging work, reducing packaging man-hours, reducing packaging material costs, and increasing the number of packaging storage personnel.
Because the design part of the is protected by the runner and pin,
It is possible to reduce the risk of scratches, stains, and damage to the design area.

[Brief explanation of the drawing]

Fig. 1 is a sketch showing an example of an operating knob, Fig. 2 is a sketch showing a conventional multi-cavity molding state, Fig. 3 is a side view of the state shown in Fig. 2, and Fig. 4 is a sketch of the present invention. FIG. 5 is a side view of the state shown in FIG. 4, and FIG. 6 is a side view of the molded products shown in FIGS. 3 and 4 stacked together. ■...Knob tip, 2...Lever insertion part, 6...
・Spool, 7...Runner, 8...Knob, 9・
...Runner, 10...Bin, 11...Tip, 12
...Bin, 13...Long hole. Patent applicant: Matsushita Electric Industrial Co., Ltd. Agent Hisashi Hoshino (5) Figure 1 Figure 3 Figure 2

Claims (1)

[Claims] When molding parts that require an aesthetically pleasing appearance, such as operating knobs for switches in equipment, using plastic materials in multi-cavity υ,
The runner is configured in an H-shape, and protrusions are provided in the vicinity of each of the four tips of the H-shape in a direction perpendicular to the runner. A feature is that by providing thinner protrusions and forming holes on the back side of the runner of each of the protrusions into which the one step narrower protrusions can be inserted, it is possible to stack and connect multiple pieces. A molded object with a large number of molded parts.