1. Field of the Invention
This invention relates to a mold-conveying device for an plastic blow-molding machines, particularly to one matching with a plastic blow-molding machines for producing plastic products formed integral with labels in a mold, and for this purpose, the shaping mold of the plastic blow-molding machines is divided into a main mold and an auxiliary mold combined together. The mold conveying device positioned at the lower front side of the plastic blow-molding machines is composed of a machine base and an auxiliary mold base. The auxiliary mold base is provided with a transmitting device for driving the auxiliary mold base to move rightward and leftward, having the lower mold of the shaping mold located on the topside. A power member is provided under the auxiliary mold base for raising and lowering the auxiliary mold base to carry out mold conveying in accordance with the blow-molding and molding movements of the injection molding machine.
2. Description of the Prior Art
A conventional plastic blow-molding machines, as shown in
To solve the above-mentioned problem of the conventional plastic blow-molding machines, the shaping mold of an plastic blow-molding machines in the present invention is provided with an upper and a lower mold block combined together, and the upper mold block is composed of a left and a right small mold block, while the lower mold block is formed integrally. Thus, labels can be kept steady in the cavity of the shaping mold of the plastic blow-molding machines, and by means of the mold-conveying device of the plastic blow-molding machines and by using blow-molding technique, the plastic product formed integral with the label can be produced in the shaping mold.
The objective of this invention is to offer an blow-molding technique for producing plastic products formed integral with labels in a mold, able to insure the labels to be kept steady in the cavity of a shaping mold after they are deposited therein. Before the plastic products in the shaping mold are shaped, the labels will be properly heated by the high temperature in the shaping mold and completely attached on the surfaces of the plastic products after the plastic products are shaped.
The features of this invention are described as follows.
1. The plastic blow-molding machines of this invention is provided with a mold-conveying device composed of a machine base and an auxiliary mold base. The machine base is fixed under the main mold base of the plastic blow-molding machines, and the auxiliary mold base is provided with a transmitting device for driving the auxiliary mold base to move rightward and leftward.
2. The auxiliary mold base of the mold-conveying device is mounted on the machine base, and the lower mold of the shaping mold is located on the auxiliary mold base. A power member is installed under the auxiliary mold base for driving the auxiliary mold base to move up and down and convey the shaping mold in accordance with the blow-molding movements of the plastic blow-molding machines.
This invention will be better understood by referring to the accompanying drawings, wherein:
A first preferred embodiment of a mold-conveying device for an plastic blow-molding machines in the present invention, as shown in
The mold conveying device is installed under the front side of the plastic blow-molding machines 2 at a location corresponding with the main mold base 20 of the plastic blow-molding machines 2, which is fixed with the upper mold 30 of the shaping mold 3, as shown in
The machine base 4 positioned under the main mold base 20 of the plastic blow-molding machines 2 is provided with a dovetail rail 40 and a rack 41 engaged with the transmitting gear 541 of the auxiliary mold base 5 for driving the auxiliary mold base 5 to move rightward and leftward, as shown in
The auxiliary mold base 5 assembled on the machine base 4 is provided with a bottom base 50 bored with a dovetail rail groove 500 matching with the dovetail rail 40 of the machine base 4 for restricting the auxiliary mold base 5 to move in a definite direction, as shown in
In addition, a transmitting device 54 is assembled under the auxiliary mold base 5, provided with a transmitting member 540, as shown in
By so designing, the mold-conveying device provided at the lower front side of the plastic blow-molding machines can quickly convey the shaping mold 3 to a fixed point in accordance with the blow-molding movements of the plastic blow-molding machines. Therefore, the plastic blow-molding machines, making use of an blow-molding technique, can produce plastic products formed integral with labels in a mold. In addition, labels 6 can be conveniently put in the cavity of the shaping mold and kept steady therein, as shown in
While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
Number | Name | Date | Kind |
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1715896 | Bullard, Jr. | Jun 1929 | A |
3151193 | Thornton | Sep 1964 | A |
3496599 | Brown | Feb 1970 | A |
4303381 | Aoki | Dec 1981 | A |
4501548 | Jahnel | Feb 1985 | A |
5026266 | Takasaki et al. | Jun 1991 | A |
6994543 | Chang | Feb 2006 | B2 |
Number | Date | Country | |
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20080206387 A1 | Aug 2008 | US |