CN104909037A - A kind of screw packing bottle - Google Patents

Abstract

The invention discloses a thread packaging bottle, which comprises a bottle body and a bottle cap, wherein a bottle opening of the bottle body is provided with bottle opening external threads, the bottle cap is provided with an inner cap extending into the bottle opening, bottle cap threads matched with the bottle opening external threads are arranged on the inner wall of the bottle cap, inner cap threads are arranged on the outer wall of the inner cap, thin wall parts are arranged between the bottle opening external threads, after the bottle cap is covered on the bottle opening, the thin wall parts are extruded inwards to form bottle opening internal threads corresponding to the inner cap threads, in the production process, threads do not need to be arranged on the inner wall of the bottle opening, the production difficulty can be reduced, and the.

Description

A kind of screw packing bottle

technical field

The invention relates to a packaging bottle, in particular to a plastic beverage packaging bottle.

Background technique

The thread packaging bottles in the prior art need to be equipped with more thread turns. In order to reduce the number of thread turns on the premise of ensuring safety, a method in the prior art is to set an intrusion on the top of the bottle cap. For the inner cap in the bottle mouth, set the thread on the inner cap and the inner wall of the bottle mouth, and set the thread on the bottle cap and the inner cap, which is equivalent to transferring a part of the thread on the outer wall of the bottle mouth to the inner wall of the bottle mouth, which can effectively reduce the screw thread of the bottle mouth. However, in the production process of beverage bottles with this structure, the internal thread of the bottle mouth is difficult to produce, and the difficulty is mainly reflected in the ejection of the mold during injection molding, which leads to a more complicated mold structure.

Contents of the invention

In order to overcome the deficiencies of the prior art, the invention provides a screw thread packaging bottle with simple production process.

The technical solution adopted by the present invention to solve its technical problems is:

A screw thread packaging bottle, comprising a bottle body and a bottle cap, the bottle mouth of the bottle body is provided with a bottle mouth external thread, the bottle cap is provided with an inner cap extending into the bottle mouth, and the inner wall of the bottle cap is provided with There is a bottle cap thread matching the external thread of the bottle mouth, the outer wall of the inner cap is provided with an inner cap thread, the part between the external threads of the bottle mouth is a thin-walled part, and the bottle cap is covered behind the bottle mouth , the thin-walled portion protrudes inwardly under extrusion to form an internal thread of the bottle mouth corresponding to the thread of the inner cap.

The beneficial effects of the present invention are: the portion between the external threads of the bottle mouth of the present invention is a thin-walled part, and after the bottle cap is placed on the bottle mouth, the thin-walled part is squeezed and protrudes inward, forming a corresponding inner thread of the bottle mouth. Thread, in the production process, there is no need to set threads on the inner wall of the bottle mouth, which can reduce the difficulty of production and improve production efficiency.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a bottle structure schematic diagram of the present invention;

Fig. 2 is a structural diagram of the bottle mouth of the present invention after the squeezed wall is protruded inward;

Fig. 3 is a sectional view of the bottle cap after being screwed on the bottle mouth.

Detailed ways

Referring to Fig. 1 to Fig. 3, a screw thread packaging bottle includes a bottle body 1 and a bottle cap 4, the bottle mouth of the bottle body 2 is provided with a bottle mouth external thread 2, and the bottle cap 4 is provided with a The inner cap 5 in the mouth, the inner wall of the bottle cap 4 is provided with the bottle cap thread 7 matching the outer thread 2 of the bottle mouth, the outer wall of the inner cap 5 is provided with an inner cap thread 6, and the outer thread 2 of the bottle mouth The part in between is the thin-walled part 3. After the bottle cap 4 is covered on the bottle mouth, the thin-walled part 3 is squeezed and protrudes inwardly to form the bottle mouth internal thread corresponding to the internal cap thread 6.

In the production process of the packaging bottle of the present invention, there is no need to set threads on the inner wall of the bottle mouth, but the compression when the cap is screwed is used to make the thin-walled part 3 protrude into the inner thread of the bottle mouth. After the bottle cap is tightened, the outer thread of the bottle mouth 2. Threaded connection with the bottle cap thread 7 can keep the thin-walled part 3 in a convex state, which can reduce the difficulty of production and improve production efficiency.

Claims (1)

1. A threaded packaging bottle, comprising a bottle body (1) and a bottle cap (4), the bottle mouth of the bottle body (2) is provided with a bottle mouth external thread (2), and the bottle cap (4) is provided with The inner cap (5) protruding into the bottle mouth, the inner wall of the bottle cap (4) is provided with the bottle cap thread (7) matching the outer thread (2) of the bottle mouth, the inner cap (5) The outer wall is provided with an inner cap thread (6), which is characterized in that the part between the outer threads (2) of the bottle mouth is a thin-walled part (3), and the bottle cap (4) is covered behind the bottle mouth, and the The thin-walled part (3) protrudes inwardly under extrusion, forming the inner thread of the bottle mouth corresponding to the inner cap thread (6).