JP3026267B1 - Variable number molds for injection molding machines - Google Patents

Abstract

An object of the present invention is to make a plurality of molds used in a bottle injection molding machine, and to make a mold whose number can be changed depending on the quantity and size of a product to be produced. SOLUTION: A core mold table having a plurality of core mold holes on both side surfaces thereof, an injection hole mold table having the same number of injection hole holes as the core mold holes, a bottle mold table, a plurality of core molds, Injection hole mold,
A plurality of bottle holes provided in the bottle mold table, a bottle bottom mold attached to the bottom of each bottle hole, and a micro adjustment tool that holds each core mold and is inserted into each core mold hole and is stable A lid that closes each core mold hole after pulling out each micro-adjustment tool assembled with each core mold, a lid that closes each injection hole after pulling out each injection hole type from the injection hole, and a bottle bottom die that fits each bottle It consists of a lid that closes the bottom of each bottle hole after being removed from the bottom of the hole, a swivel seat that is connected to the core mold base and is supported by a support frame, and an air pressure cylinder that rotates the core mold base by 180 degrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for use in an injection molding machine for plastic bottles.

[0002]

2. Description of the Related Art Conventionally, injection molding machines for plastic bottles all use a single injection hole type injection hole, which is formed by injection-coating a plastic material melted by heat around a single core mold. Further, the single-core mold and the material thereabove are rotated 180 degrees together so as to be opposed to the bottle mold, and then inserted into the bottle mold and blown into the bottle to form the bottle. . For this reason, only one product can be molded in one operation, so that the maximum injection capacity of the injection molding machine cannot be fully utilized, and the efficiency of the machine cannot be maximized. In addition, when making bottles having different dimensions, all of the core mold table, the injection mold table, the bottle mold table, and the like must be replaced, and the process is complicated and time-consuming.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a bottle having different dimensions by replacing only the injection hole mold and the bottle bottom mold without replacing the core mold base, the injection hole mold, the core mold and the injection hole mold. It is an object of the present invention to provide a mold capable of producing the same. It is another object of the present invention to increase the production speed by mounting a plurality of molds, for example, three or five molds, instead of a single mold.

[0004]

A mold according to the present invention is mainly used in a bottle injection molding machine, and has a core mold table placed at an intermediate portion of the injection molding machine and a plurality of molds formed on both sides of the core mold table. The bottom of each bottle hole with a core mold hole, a plurality of core molds to be inserted into the mold hole, and an injection hole mold base having the same number of injection hole holes as the core mold. A pivot mold connected to the core mold table and supported by a support table, and simultaneously rotating the core mold table and the pivot seat in the forward and reverse directions by 180 degrees. The pressure cylinder to change.

[0005] Each of the core molds installed in the holes on both sides of the core mold base is fixed by an independent micro-adjustment tool,
The micro-adjustment tool can be attached to or removed from a core mold hole of the core casting stand by a plug-in type. Thereby, when necessary, the micro-adjustment tool and the core mold are removed, and the core mold hole is closed with a closing lid instead. The injection hole mold of the injection mold base is also a plug-in type. When necessary, the injection hole mold is removed with a closing lid, and then the hole is sealed. Further, the bottle mold and the bottle bottom mold of the bottle mold table are also closed. Can be replaced and sealed, the size of the bottle to be produced is larger or smaller,
The number of the core mold holes, the injection hole mold holes, the bottle molds, and the bottle bottom molds is changed to a required number by the closing lid depending on medium or small-volume production. This eliminates the need to replace the injection hole mold table, the bottle mold table, and the core mold table when making bottles of different sizes. The core mold table, the injection hole mold table, and the bottle mold all have a plurality of holes, and the core mold, the injection hole mold, and the bottle hole are inserted and the number is changed by the insertion type, and can be adjusted according to the production needs.

With the above-described structure, the mold according to the present invention is provided with a plurality of holes in the core mold base, the injection hole mold base, and the bottle mold in order to speed up bottle production. And the number of injection hole molds and bottle holes used can be changed as needed, so that when producing small, medium and large volume and different size bottles, injection hole mold and bottle bottom mold can be used. Can be replaced, and other parts do not need to be replaced, so that the operation can be performed quickly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The number of molds for an injection molding machine according to an embodiment of the present invention can be changed, as shown in FIG. A plurality of (for example, three or five) core molds 11 are assembled on both sides of the table 1. Also, the same number of injection hole molds 21 as the core mold 11 are assembled to one injection hole mold table 2 installed on the right side of the core mold table 1, and the bottle mold table 3 installed on the left side of the core mold table 1.
Is a bottle mold 31 into which the same number of bottle holes 32 as the core mold 11 are fitted.
have. The bottle hole 32 also has a bottle bottom mold 32 on its bottom surface, and the core mold stand 1 is connected to the one swivel seat 4 which is supported by an upper support. Further, the core mold base 1 is turned by 180 degrees by the operation of the air pressure cylinder 6, and the position is changed from the right side to the left side. Accordingly, when the core mold 11 is in the right position, it receives the material of the bottle from the injection hole 21 corresponding to the injection hole 21, and when it is turned to the left position, it faces the bottle mold 31. From the bottle mold table 3
The core mold 11 moves into the bottle hole 32 and then air is blown into the material of the core mold 11 to form a bottle in the bottle hole 32.

Next, as shown in FIGS. 2 and 3, each core mold 11 further has an independent micro-adjustment tool 13 firmly attached thereto. The micro adjuster 13 is of an insertion type, and is inserted and positioned in the core mold hole 12. Each core mold 11
When the micro adjuster 13 is not used, the core mold hole 12 can be sealed by removing it together and attaching the closing lid 14. Also, as shown in FIG.
The same number of injection hole mold holes 21 as the core mold 11 are provided, and the injection hole mold 23 is positioned inside by the insertion type. When the injection hole mold 23 is not used, the injection hole mold 23 is detached, and the closed lid 22 is inserted to be sealed. As shown in FIGS. 5 and 6, the bottle mold table 3 is provided with two bottle molds 31 on the left and right sides. The bottle mold 31 has a plurality of bottle holes 32, and is attached to the bottom of each bottle hole 32 so that the bottle bottom mold 33 can be removed. When all the bottle holes 32 are not used, the bottle bottom mold 33 is removed, a lid 34 is attached, and the bottom surface of the bottle hole 32 is closed. If you want to mold bottles of different dimensions, just use injection hole mold 2
2 and the bottle bottom mold 33 only need to be replaced.

Further, the injection hole mold base 2, the bottle mold 31, and the core mold 1
Has a plurality of, for example, three mold holes A, B, C (see FIG. 7) or five mold holes A, B, C, D, E (see FIG. 8).

Thus, for example, when using each mold base having three mold holes, when only one hole B is used, the two holes A and C are closed, and the lids 14 and 23 are closed. Keep sealed at 34. In this case, large-sized and heavy-weight products are applied to small-quantity molding. When two holes A and C are used, the hole of B is closed and sealed with a lid. Used for medium quantity molding of dimensional and medium weight products. Further, when all three holes A, B and C are used, they are used for mass molding of small-sized and small-weight products.

When using one having five holes A, B, C, D, and E, a method using only one hole, a method using two holes B and D, and a method using five holes A, B, C, D, E
There is a way to use all of them. When only one hole C is used, the four outer holes A, B, D, and E are closed, sealed with a lid, and applied to the production of bottles with a diameter or weight larger than two holes, Reduce costs and use for small quantity production. When two holes B and D are used, outer A, C and E
The hole is closed with a closed lid and is used for the production of bottles with a diameter or weight larger than 5 holes, and used for medium volume production. When all five holes A, B, C, D and E are used, they are used for mass production.

[0012]

According to the present invention, the number of molds used in the injection molding machine of the present invention can be changed. Sealed, use one or two or three or five injection holes to maximize the use of the injection molding machine, thus reducing the cost required for the mold and reducing the cost. This has the effect of shortening the exchange time and reducing artificial costs.

[Brief description of the drawings]

FIG. 1 is a front view of a case where a variable number of molds for an injection molding machine according to an embodiment of the present invention are assembled on the injection molding machine.

FIG. 2 is a perspective view of a core mold base in the mold according to the embodiment of the present invention.

FIG. 3 is a perspective view of a closing lid that can be removed from the micro-adjustment tool of the core mold of the core mold base in the mold according to the embodiment of the present invention.

FIG. 4 is a perspective view of a removable lid of the injection hole type table according to the embodiment of the present invention.

FIG. 5 is a perspective view of a closing lid from which a bottle bottom mold of the bottle mold stand according to the embodiment of the present invention can be removed.

FIG. 6 is a front view of a removable lid for removing a bottle bottom mold of the bottle mold stand according to the embodiment of the present invention.

FIG. 7 is a schematic view when there are three core mold holes and only one of them is used in the embodiment of the present invention.

FIG. 8 is a schematic view of an embodiment of the present invention when there are three core mold holes and only two of them are used.

FIG. 9 is a schematic view when three core mold holes are used and all of them are used in the embodiment of the present invention.

FIG. 10 is a schematic view when five core mold holes are used and only one of them is used in the embodiment of the present invention.

FIG. 11 is a schematic view when five core mold holes are used and only two of them are used in the embodiment of the present invention.

FIG. 12 is a schematic view when five core mold holes are used and all of them are used in the embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 1 core mold base 11 core mold 12 core mold hole 13 core mold micro-adjustment tool 14 closing lid 2 injection hole mold base 21 injection hole 22 injection hole mold 23 closing lid 3 bottle mold table 31 bottle mold 32 bottle hole 33 bottle bottom mold 34 Closing lid 4 Swivel seat 5 Air pressure cylinder

Claims (1)

(57) [Claims] 1. A core mold table mainly used in an injection molding machine for bottles and placed at an intermediate portion of the injection molding machine; a plurality of core mold holes formed on both sides of the core mold table; A plurality of core molds installed in a plug-in manner, and a bottle mold attached to the bottom of each bottle hole with an injection hole mold base forming the same number of injection hole mold holes as the core mold, A swivel seat connected to the core mold base and supported by a support base, and a pressure cylinder configured to simultaneously rotate the core mold base and the swivel seat in the forward and reverse directions by 180 degrees to change the position thereof, Each of the core molds installed in the holes on both sides of the core mold stand is fixed by an independent micro-adjustment tool, and the micro-adjustment tool is inserted into the core mold hole of the core mold stand. The micro-adjustment tool and the core mold can be removed when necessary. Remove it and seal the core mold hole with a closing lid instead.The injection hole mold of the injection mold base is also a plug-in type. If necessary, remove the injection hole mold with the closing lid and then open the hole. The bottle mold and the bottle bottom mold of the bottle mold stand can also be replaced with a lid and sealed. Depending on the diameter of the bottle to be produced, a large, medium, or small quantity can be used. The core mold hole, the injection hole mold hole, the bottle mold, and the bottle bottom mold are changed to a required number with the closing lid, so that when making bottles of different sizes, the injection hole mold base and the bottle are changed. The number of molds for an injection molding machine can be changed, wherein there is no need to replace the entire mold table and the core mold table.