Transparent plastic integrally molded goblet

A transparent plastic integrally molded goblet has a cup-shaped part, a columnar first leg and a disc-shaped first base integrally molded from transparent plastics. The bottom edge of the cup-shaped part extends downwards to form the first leg. The bottom end of the first leg integrally forms the first base. The cup-shaped part has a circumferential wall which encloses the circumference of a first space. The top edge of the circumferential wall forms an annular first ring frame, and the central part of bottom edge of the first base downwards forms a first convex pin. The integral molding of transparent plastics can enhance the appearance integrity of the goblet, the manufacture of the goblet is easy and the product yield is increased.

CROSS-REFERENCE TO RELATED U.S. APPLICATIONS

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a goblet, and more particularly to the disclosure of an innovative structural type of a transparent plastic integrally molded goblet.

The goblet is a ware for drinking, comprising a cup, a slender columnar leg and a base, wherein the cup is a container with the top edge forming the rim of the cup, the top end of the leg is connected to the bottom edge of the cup, and the bottom of the leg is connected to the top edge of the base. The goblet can be made of glass, crystal or plastics. When a goblet made of glass is impacted or tilted, the cup or the leg is likely to be damaged due to the fragility of glass. The goblet made of crystal is unlikely to be popularized for high cost, while the goblet made of plastics is low cost and unbreakable.

In terms of the known goblet made of plastics, the cup, the leg and the base are formed in molds respectively, and then the cup, the leg and the base are combined by connection structures or high frequency heating.

In terms of the goblet bonded by using connection structures, the connection structures are likely to ruin the integrity of appearance, which is adverse to forming a transparent goblet. Different ornamental shapes are formed outside in general, so that said connection structures are unlikely to be visually detected. In terms of the goblet bonded by using high frequency heating means, as the operational technique of high frequency heating is insufficient, there are joint marks formed at the interfaces of the cup, the leg and the base. If the goblet is made of transparent material, said joint marks are likely to be visually detected, forming an adverse effect on the integrity of appearance. The overall process of the known goblet made by using connection structures or high frequency heating means to bond the cup, the leg and the base which are molded respectively is complex.

BRIEF SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a transparent plastic integrally molded goblet. The technical problem to be solved is to break through how to develop a novel transparent plastic integrally molded goblet with more ideal practicability.

Based on said object, the present invention provides a transparent plastic integrally molded goblet, which comprises a cup-shaped part, a columnar first leg and a disc-shaped first base integrally molded from transparent plastics, wherein the bottom edge of the cup-shaped part extends downwards to form the first leg, and the bottom end of the first leg integrally forms the first base. A first space is formed inside the cup-shaped part. The first space communicates with the exterior of the cup-shaped part through the top edge of the cup-shaped part. The cup-shaped part has a circumferential wall which encloses the circumference of the first space. The inside diameter of the circumferential wall at the top end is smaller than the maximum inside diameter of the circumferential wall. The top edge of the circumferential wall forms an annular first ring frame. The annular inner edge and outer edge of the first ring frame protrude from the inner circumference and outer circumference of the circumferential wall respectively. The central part of the bottom edge of the first base downwards forms a first convex pin. The bottom edge of the first base rises upwards to form a first arch face. The first arch face surrounds the circumference of the first convex pin, and the bottom end of the first convex pin is located between the outer circumference of the first arch face and the inner circumference of the first arch face, so that the first base is stably configured on a plane.

Based on the innovative structure type and technical characteristics, as compared to the prior art, the present invention can enhance the integrity of appearance, the manufacture of the goblet is easy and the product yield is increased, and practical progressiveness is achieved.

DETAILED DESCRIPTION OF THE INVENTION

The figures show the preferred embodiments of the transparent plastic integrally molded goblet of the present invention, but the embodiments are for illustration only, the patent application is not limited to this structure.

The preferred embodiment of said transparent plastic integrally molded goblet01comprises a cup-shaped part10, a columnar first leg20and a disc-shaped first base30integrally molded from transparent plastics. The bottom edge of the cup-shaped part10extends downwards to form the first leg20. The bottom end of the first leg20integrally forms the first base30. A first space11is formed inside the cup-shaped part10. The first space11communicates with the exterior of the cup-shaped part10through the top edge of the cup-shaped part10. The cup-shaped part10has a circumferential wall12which encloses the circumference of the first space11. The inside diameter D1of the circumferential wall12at the top end is smaller than the maximum inside diameter D2of the circumferential wall12. The top edge of the circumferential wall12forms an annular first ring frame13. The annular inner edge and outer edge of the first ring frame13protrude from the inner circumference and outer circumference of the circumferential wall12respectively. The central part of the bottom edge of the first base30downwards forms a first convex pin32. The bottom edge of the first base30rises upwards to form a first arch face34. The first arch face34surrounds the circumference of the first convex pin32, and the bottom end of the first convex pin32is located between the outer circumference of the first arch face34and the inner circumference of the first arch face34, so that the first base30is stably configured on a plane90. The first convex pin32forms a first bearing face36.

The method to manufacture the goblet01demonstrated in the preferred embodiment comprises the following steps:

Blank manufacture: a blank02is made of transparent plastics by injection molding.

The blank02is integrally molded from a cup-shaped blank40, a columnar second leg50and a disc-shaped second base60. The bottom edge of the cup-shaped blank40extends downwards to form the second leg50. The bottom end of the second leg50integrally forms the second base60. A second space41is formed inside the cup-shaped blank40. The second space41communicates with the exterior of the cup-shaped blank40through the top edge of the cup-shaped blank40. The cup-shaped blank40has an annular wall42which encloses the circumference of the second space41. The top edge of the annular wall42forms an annular second ring frame43. The annular inner edge and outer edge of the second ring frame43protrude from the inner circumference and outer circumference of the annular wall42respectively. The inside diameter D3of the annular wall42decreases from the second ring frame43to the second leg50. The central part of bottom edge of the second base60downwards forms a second convex pin62. The bottom edge of the second base60rises upwards to form a second arch face64. The second arch face64surrounds the circumference of the second convex pin62, and the bottom end of the second convex pin62is located between the outer circumference of the second arch face64and the inner circumference of the second arch face64. The second convex pin62forms a second bearing face66. The second convex pin62is located in the axial extension of the second leg50, and the second convex pin62and the second leg50are coaxially aligned. The change in the inside diameter D3can be induced by the pattern draft of injection molding of the annular wall42, and the change in the inside diameter D3can be induced by the selection of specific shape of the cup-shaped part10.

The first ring frame13and the second ring frame43have the same inside diameter. The distance between the first ring frame13and the first leg20of the cup-shaped part10is defined as H1, the distance between the second ring frame43and the second leg50of the cup-shaped blank40is H2, and 0.9H1≤H2≤H1.

Cup-shaped part molding: the blank02is disposed in a blow mold03, the cup-shaped blank40is heated, and the compressed air is fed into the second space41, the cup-shaped blank40is shaped into the cup-shaped part10by blow molding to prepare the goblet01.

The blow mold03has a main body72, a fixing part74, a blowing part76and a propping part78. A molding cavity73is formed inside the main body72. The surface of the molding cavity73and the outer surface of the cup-shaped part10form male-female coordination, so that the cup-shaped blank40is inserted into the molding cavity73. The fixing part74is disposed at one end of the main body72, so that the fixing part74and the main body72oppositely cramp the second ring frame43to localize one end of the cup-shaped blank40. The blowing part76is disposed in the fixing part74, so as to feed compressed air into the second space41, and to form the cup-shaped blank40into the cup-shaped part10by blow molding. The propping part78is disposed at one end of the main body72far from the fixing part74. The propping part78axially props the second bearing face66, so that the propping part78and the fixing part74oppositely localize the blank02.

When the blank02is shaped into the goblet01, the second leg50becomes the first leg20, the second base60becomes the first base30.

FIG.8shows that the second bearing face66is a ring surface, and the second bearing face66surrounds a second bulge68, in combination with the formation of the second bulge68, the propping part78forms a dent79for holding the second bulge68. The second bulge68is the residue after the blank02is molded. The existence and specific shape of the second bulge68are optional implementation means of the molding of the blank02, they cannot be the explanation for limiting the present invention, hereby, the shape of the first bearing face36and a first bulge38surrounded by the first bearing face36shown inFIG.3cannot be the explanation for limiting the present invention.

The goblet01is integrally molded from transparent plastics, differing from prior art which molds the cup-shaped part10, the first leg20and the first base30respectively and combines them by using connection structures or high frequency heating. It is unnecessary to apply ornamental shapes to the appearance of the goblet01to cover the joint marks resulted from said connection structures or high frequency heating, favorable for using transparent plastics to prepare the goblet01, and the appearance is integral.

The blank02is prepared from transparent plastics by injection molding, and then the blank02is molded by blowing, so that the cup-shaped blank40changes into the cup-shaped part10. As such, goblet01with good transparency and appearance integrity is prepared.

The inside diameter D3of the annular wall42decreases from the second ring frame43to the second leg50. In the injection molding of the blank02, the cup-shaped blank40is easy to demold, the complexity of the injection mold for the blank02is reduced, and then the cup-shaped blank40is made into the cup-shaped part10by blow molding, even if the inside diameter D1of the circumferential wall12at the top end is smaller than the maximum inside diameter D2of the circumferential wall12, the cup-shaped part10can be molded easily and reliably.

In the process of blow molding the cup-shaped blank40into the cup-shaped part10, the main body72and the fixing part74oppositely cramp the second ring frame43. As such, the reliability of deformation of the cup-shaped blank40under the effect of the compressed air is enhanced, the manufacture of the goblet01is easy and the product yield is increased. In combination with the propping effect of the propping part78on the second bearing face66, in the process of transforming the cup-shaped blank40into the cup-shaped part10, the propping part78is provided for the second base60and the second leg50to resist the acting force formed by the compressed air. As such, in the process of shaping the blank02into the goblet01, the localization reliability of the blank02is high.