Integrated forming process for manual blowing of concentric circle glass bottle

Abstract

The invention discloses an integral forming process for a manual blowing concentric circle glass bottle. The integral forming process comprises the following steps: step 1, heating and softening a bottle preform; 2, the softened bottle blank is put into a mold to be subjected to blowing forming, and a bottle body with a thin wall in a center hole is obtained; and thirdly, the thin wall in the center hole is removed, and the bottle body with the center hole is obtained. The bottle preform can be directly put into the mold after being heated and softened, bottle body forming and center hole forming are simultaneous forming, the position of the center hole can be reserved when the forming column is arranged for forming the bottle body, and a target glass bottle can be obtained only by removing redundant materials (thin walls) in the center hole after the bottle body is formed; in the forming process of the center hole, high production efficiency can be guaranteed while good roundness of the center hole is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of glass secondary processing, and in particular to a one-piece molding process of hand-blown concentric circle glass bottles. Background Art

[0002] The production process of glass bottles is generally as follows: after burning the tube, send it into the mold and blow it into shape. The steps for forming a bottle with a through hole (center hole) in the middle of the bottle body are as follows: Figure 1 As shown, firstly, the bottle body shape (i.e., bottle embryo) is fired, and then Figure 2 As shown in the figure, the center hole is formed by manually burning the position of the center hole with fire, and then the center hole is formed by a mold. The glass bottle with a center hole formed by this method has the following disadvantages: when the center hole is a round hole, the roundness of the center hole is poor and difficult to control, and the labor intensity is large and the production efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a one-piece forming process for hand-blown concentric circle glass bottles. After the bottle embryo is heated and softened, it can be directly placed in the mold. The bottle body and the center hole are formed simultaneously. The center hole position can be reserved when the forming column is formed during the bottle body forming. After the bottle body is formed, only the excess material in the center hole needs to be removed to obtain the target glass bottle. The center hole forming process can ensure good roundness while ensuring high production efficiency.

[0004] The objective of the present invention is achieved through the following technical solutions: A one-piece forming process of a hand-blown concentric circle glass bottle comprises the following steps: Step 1: Heat and soften the preform; Step 2: placing the softened preform into a mold and blow-molding it to obtain a bottle body with a thin wall in the center hole; In the step 2, the mold comprises a cavity for forming a bottle preform, a forming column is provided in the cavity, the forming column corresponds to the position of the central hole of the bottle body, and the forming column is used to squeeze the material of the bottle preform at the forming column when the bottle preform is formed in the cavity, and form a central hole with a thin wall; Step 3: remove the thin wall in the center hole to obtain a bottle body with a center hole.

[0005] Furthermore, the central hole is a circular hole, a regular polygonal hole or a special-shaped hole.

[0006] Furthermore, the mold includes a first module and at least one second module.

[0007] Furthermore, the molding column is an integral structure, and the molding column is arranged on the first module or the second module.

[0008] Furthermore, the forming column has a two-section split structure, and the two sections of the forming column are respectively arranged on a first module and a second module corresponding to the first module.

[0009] Furthermore, the thickness of the thin wall is smaller than the thickness of any position of the bottle body.

[0010] Furthermore, in the step three, the thin wall in the center hole is removed by manual knocking.

[0011] The beneficial effects of the present invention are: The preform of the present invention can be directly placed into the mold after being heated and softened. The bottle body and the center hole are formed simultaneously. The center hole position can be reserved when the forming column is formed during the bottle body forming. After the bottle body is formed, only the excess material (thin wall) in the center hole needs to be removed to obtain the target glass bottle. The center hole forming process can ensure good roundness while ensuring high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the bottle embryo structure in the prior art; Figure 2 It is a schematic diagram of the structure of a bottle preform after a center hole is burned out on the basis of the bottle preform in the prior art; Figure 3 Schematic diagram of the mold structure in an embodiment of the present invention; In the figure, 1, bottle embryo; 2, center hole; 3, mold; 4, cavity; 5, molding column. DETAILED DESCRIPTION

[0013] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0014] See also Figure 3 , the present invention provides a technical solution: Example: like Figure 3 As shown, a one-piece molding process for hand-blown concentric circle glass bottles, the one-piece molding process for hand-blown concentric circle glass bottles comprises the following steps: Step 1: heating and softening the preform 1; Step 2: placing the softened preform 1 into the mold 3 and blow-molding it to obtain a bottle body with a thin wall in the center hole 2; In the step 2, the mold 3 includes a cavity 4 for molding the preform 1, and a molding column 5 having a shape adapted to the center hole 2 is provided in the cavity 4. The molding column 5 corresponds to the position of the center hole 2 of the bottle body. When the preform 1 is molded in the cavity 4, the molding column 5 squeezes the material of the preform 1 at the molding column 5 and forms the center hole 2 with a thin wall therein; Step 3: remove the thin wall inside the central hole 2 to obtain a bottle body with the central hole 2.

[0015] In step three, the thin wall in the central hole 2 is removed by manual knocking.

[0016] The thickness of the thin wall is smaller than the thickness of any position of the bottle body.

[0017] The preparation of the bottle preform 1 is based on the prior art, which may be, but is not limited to, adsorbing the melted glass onto a glass fiber rod or a metal rod, rotating and stretching in the air to form glass fibers, and then shaping the glass fibers into a predetermined shape of the bottle preform 1, and cutting the bottle preform 1 after cooling.

[0018] The preform 1 of the present invention can be directly placed in the mold 3 after being heated and softened. The bottle body and the center hole 2 are formed simultaneously. The molding column 5 can reserve the position of the center hole 2 when the bottle body is formed. After the bottle body is formed, only the excess material (thin wall) in the center hole 2 needs to be removed to obtain the target glass bottle. The molding process of the center hole 2 can ensure good roundness while ensuring high production efficiency.

[0019] Furthermore, the central hole 2 is a circular hole, a regular polygonal hole or a special-shaped hole. In this embodiment, it is a circular hole.

[0020] The mold 3 includes a first module and at least one second module. When one second module is provided, the first module and the second module form a two-half structure, and the mold 3 can be double-opened or single-opened, which is a prior art (such as the patent with publication number CN219823994U), and will not be described here. When the second module is greater than or equal to two, the mold 3 is a multi-petal structure (such as the patent with publication number CN219567784U).

[0021] Furthermore, the molding column 5 is an integral structure, and the molding column 5 is arranged on the first module or the second module. In this arrangement, the thin wall is formed at one end close to the second module or the first module.

[0022] Furthermore, the forming column 5 has a two-stage split structure, and the two-stage forming column 5 is respectively arranged on the first module and the second module corresponding to the first module. In this arrangement, a thin wall is formed in the middle of the second module and the first module (i.e., the middle of the center hole 2), so that when the thin wall is knocked away, the center hole 2 can provide guidance for the knocking tool (rod).

[0023] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A one-piece forming process for hand-blown concentric glass bottles, characterized in that: The steps include: Step 1: Heat and soften the preform; Step 2: placing the softened preform into a mold and blow-molding it to obtain a bottle body with a thin wall in the center hole; In the step 2, the mold comprises a cavity for forming a bottle preform, a forming column is provided in the cavity, the forming column corresponds to the position of the central hole of the bottle body, and the forming column is used to squeeze the material of the bottle preform at the forming column when the bottle preform is formed in the cavity, and form a central hole with a thin wall; Step 3: remove the thin wall in the center hole to obtain a bottle body with a center hole.

2. The one-piece forming process of hand-blown concentric glass bottles according to claim 1, characterized in that: The central hole is a circular hole, a regular polygonal hole or a special-shaped hole.

3. The one-piece forming process of hand-blown concentric glass bottles according to claim 1, characterized in that: The mold includes a first module and at least one second module.

4. The one-piece forming process of hand-blown concentric glass bottles according to claim 3, characterized in that: The forming column is an integral structure, and the forming column is arranged on the first module or the second module.

5. The one-piece forming process of hand-blown concentric glass bottles according to claim 3, characterized in that: The forming column has a two-section split structure, and the two sections of the forming column are respectively arranged on a first module and a second module corresponding to the first module.

6. The one-piece forming process of hand-blown concentric glass bottles according to claim 1, characterized in that: The thickness of the thin wall is smaller than the thickness of any position of the bottle body.

7. The one-piece forming process of hand-blown concentric glass bottles according to claim 1, characterized in that: In the step three, the thin wall in the center hole is removed by manual knocking.

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