Quick bottle removing structure of bottom die

Abstract

The utility model discloses a quick bottle releasing structure of a bottom die, and relates to the technical field of bottle blowing dies. According to the structure, through a dual demolding mechanism of mechanical ejection and gas injection, the demolding efficiency of a complex bottle type is remarkably improved. The bottom die specifically comprises a bottom die body, an ejector pin sleeve, a ventilation ejector pin and a high-pressure air supply system, the ventilation ejector pin is slidably arranged in an ejector pin telescopic hole of the bottom die body, the tail of the ventilation ejector pin is in dynamic sealing fit with the ejector pin sleeve, and a head pipe opening extends to the working face of the bottom die; the high-pressure gas supply system drives the ventilation ejector pin to eject a bottle blank through the ejector pin sleeve, meanwhile, high-pressure gas directly acts on the bottom of the bottle through an inner channel of the ventilation ejector pin, and collaborative demolding of ejector pin mechanical ejection and gas expansion separation is achieved. The mold is particularly suitable for bottle types with complex bottle bottom curving wrinkles or deep cavity structures, and has the double advantages of efficient demolding and bottle integrity protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottle demoulding technology field, specifically, relate to a bottom mould quick bottle demoulding structure. BACKGROUND

[0002] In the bottle blowing process, the traditional demoulding structure depends on single mechanical ejection, and has the following defects: when the complex bottle is demoulded (such as multi-curl bottle bottom, deep cavity structure), only the mechanical pushing force of the ejector pin can easily cause the deformation of the bottle body or surface scratch; when the adsorption force between the bottle blank and the bottom mould is strong, repeated ejection operation is needed, which prolongs the production cycle; the existing ejector pin structure cannot adapt to the demoulding requirements of high-precision or special-shaped bottle bottom. Therefore, a dual-action demoulding scheme integrating mechanical ejection and directional gas injection is needed to break through the bottleneck of the prior art. SUMMARY

[0003] The utility model provides a bottom mould quick bottle demoulding structure, through the deep integration of mechanical and pneumatic, the industry problem of low demoulding efficiency and high damage rate of complex bottle type is solved.

[0004] In order to solve the above problems, the technical scheme adopted by the utility model is as follows:

[0005] A bottom mould quick bottle demoulding structure, comprising a bottom mould body;

[0006] The bottom mould body is provided with an axial through top pin telescopic hole in the center;

[0007] The top pin sleeve is fixedly installed on the inner side of the bottom mould body, and the tail portion is provided with a high-pressure gas interface;

[0008] The vented ejector pin is in a through pipe structure and is slidably arranged in the top pin telescopic hole, the tail portion pipe opening is communicated with the inner cavity of the top pin sleeve, and the head portion pipe opening is communicated with the front end of the top pin telescopic hole; the vented ejector pin has a retraction station in which the head end is retracted into the top pin telescopic hole, and an ejection station in which the head end protrudes from the front end of the top pin telescopic hole;

[0009] The tail portion outer wall of the vented ejector pin is in dynamic sealing cooperation with the top pin sleeve;

[0010] The high-pressure gas supply system is communicated with the inner cavity of the top pin sleeve through the high-pressure gas interface;

[0011] The axial limiting structure comprises a first limiting portion arranged at the front end of the top pin sleeve and a second limiting portion arranged at the tail portion, and is used for limiting the movement stroke of the vented ejector pin.

[0012] As a further description of the above technical scheme, the base is also included, the pipeline of the high-pressure gas supply system is installed in the base, and the bottom mould body and the top pin sleeve are installed on the top surface of the base.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1) The vented ejector pin is ejected under the drive of high-pressure gas, directly breaking the initial adhesion between the bottle blank and the bottom mold; the internal channel of the ejector pin precisely guides the high-pressure gas to the bottle bottom contact surface, rapidly separates the residual adsorption area through gas expansion; the two synergistically greatly improve the demolding efficiency and avoid damage to the bottle body.

[0015] 2) The vented ejector pin has dual functions of mechanical ejector rod and airflow channel, simplifies the structure and ensures that the gas path and the movement of the ejector pin are synchronized, dynamic sealing design reduces gas leakage, maintains stable gas pressure, and adapts to the needs of bottle blanks of different materials.

[0016] 3) For a crimped bottle bottom, the airflow can diffuse in multiple directions along the nozzle of the ejector pin, uniformly acting on the complex curved surface, and the axial limiting structure accurately controls the ejection stroke to avoid excessive ejection causing deformation of the bottle body.

[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following will be an embodiment of the utility model, and the accompanying drawings will be described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as a limitation on the scope, for those skilled in the art, on the premise of not paying creative labor, other related drawings can also be obtained according to these drawings.

[0019] Fig. 1 It is the first cross-sectional view schematic diagram of the bottom mold quick demolding structure described in the embodiment;

[0020] Fig. 2 It is the second cross-sectional view schematic diagram of the bottom mold quick demolding structure described in the embodiment;

[0021] Fig. 3 It is the structure schematic diagram of the bottom mold quick demolding structure described in the embodiment;

[0022] In the drawing: 1-bottom mold body, 2-ejector pin telescopic hole, 3-vented ejector pin, 4-ejector pin sleeve, 5-high-pressure gas supply system, 6-base. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the following will combine the drawings in the embodiments of the utility model, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.

[0024] Referring to Figs. 1-3 The embodiment provides a bottom mold quick bottle releasing structure, which comprises a bottom mold body 1, a ejector sleeve 4, a venting ejector pin 3, a high-pressure gas supply system 5 and a base 6.

[0025] The bottom mold body 1 is provided with an axial through ejector pin telescopic hole 2 in the center; the ejector sleeve 4 is fixedly installed on the inner side of the bottom mold body 1, and the tail portion of the ejector sleeve 4 is provided with a high-pressure gas interface; the venting ejector pin 3 is in a through pipe structure with a head and a tail and is slidably arranged in the ejector pin telescopic hole 2, the tail pipe opening of the venting ejector pin 3 is in communication with the inner cavity of the ejector sleeve 4, the head pipe opening of the venting ejector pin 3 is open to the front end of the ejector pin telescopic hole 2, the outer wall of the tail portion of the venting ejector pin 3 is in dynamic sealing cooperation with the ejector sleeve 4, the venting ejector pin 3 has a retraction position, as shown in Fig. 1 , in which the head end of the venting ejector pin 3 is retracted into the ejector pin telescopic hole 2, and an ejection position, as shown in Fig. 2 and Fig. 3 , in which the head end of the venting ejector pin 3 protrudes from the front end of the ejector pin telescopic hole 2; the high-pressure gas supply system 5 is in communication with the inner cavity of the ejector sleeve 4 through the high-pressure gas interface.

[0026] Further, the ejector sleeve 4 is provided with an axial limiting structure, which comprises a first limiting portion arranged at the front end of the ejector sleeve 4 and a second limiting portion arranged at the tail portion of the ejector sleeve 4 (the first limiting portion and the second limiting portion are not marked in the drawings, but one of the structure forms has been shown, that is, the tail portion of the ejector pin is provided with a shoulder portion with a diameter larger than that of the front portion, the shoulder portion is arranged in the ejector sleeve 4, and the diameters of the openings at both ends of the ejector sleeve 4 are smaller than the diameter of the shoulder portion), which is used for limiting the moving stroke of the venting ejector pin 3.

[0027] In the above structure, the venting ejector pin 3 is in sliding sealing cooperation with the ejector sleeve 4, the high-pressure gas supply system 5 drives the venting ejector pin 3 to move axially in the ejector pin telescopic hole 2. The venting ejector pin 3 is internally provided with a gas guide channel through the head and the tail, high-pressure gas enters the tail pipe opening of the venting ejector pin 3 from the inner cavity of the ejector sleeve 4, and is sprayed from the head pipe opening to the bottom of the bottle blank through the gas guide channel. The axial limiting structure (the first limiting portion and the second limiting portion) accurately controls the moving stroke of the venting ejector pin 3, and ensures that the ejection action is synchronous with the gas spraying.

[0028] In the embodiment, the pipeline of the high-pressure gas supply system 5 is installed in the base 6, the bottom mold body 1 and the ejector sleeve 4 are both installed on the top surface of the base 6, and a modular assembly structure is formed.

[0029] The above only describes preferred embodiments of the utility model and is not used for limiting the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bottom mold quick release structure, comprising a bottom mold body (1), characterized in that: an axial through pin telescopic hole (2) is arranged in the center of the bottom mold body (1); a pin sleeve (4) is fixedly installed on the inner side of the bottom mold body (1), and the tail portion of the pin sleeve (4) is provided with a high-pressure gas interface; an air-through pin (3) is in a through pipe structure and is slidably arranged in the pin telescopic hole (2), the tail portion of the air-through pin (3) is communicated with the inner cavity of the pin sleeve (4), the head portion of the air-through pin (3) is communicated with the front end of the pin telescopic hole (2), the air-through pin (3) has a retraction position in which the head portion is retracted into the pin telescopic hole (2), and a ejection position in which the head portion protrudes from the front end of the pin telescopic hole (2); the tail portion outer wall of the air-through pin (3) is dynamically sealed with the pin sleeve (4); a high-pressure gas supply system (5) is communicated with the inner cavity of the pin sleeve (4) through the high-pressure gas interface; an axial limiting structure, comprising a first limiting portion arranged at the front end of the pin sleeve (4) and a second limiting portion arranged at the tail portion, is used for limiting the moving stroke of the air-through pin (3).

2. The quick mold release structure of claim 1, wherein: a base (6) is further included, the pipeline of the high-pressure gas supply system (5) is installed in the base (6), and the bottom mold body (1) and the pin sleeve (4) are both installed on the top surface of the base (6).

Images