WO2020124904A1 - Base mould with octagonal water channel - Google Patents

Base mould with octagonal water channel Download PDF

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Publication number
WO2020124904A1
WO2020124904A1 PCT/CN2019/083559 CN2019083559W WO2020124904A1 WO 2020124904 A1 WO2020124904 A1 WO 2020124904A1 CN 2019083559 W CN2019083559 W CN 2019083559W WO 2020124904 A1 WO2020124904 A1 WO 2020124904A1
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Prior art keywords
water channel
bottom mold
cooling
octagonal
mold body
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Ceased
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PCT/CN2019/083559
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French (fr)
Chinese (zh)
Inventor
姜晓平
卢佳
韦显合
吴裕光
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GDXL Precise Machinery Co Ltd
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GDXL Precise Machinery Co Ltd
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Publication of WO2020124904A1 publication Critical patent/WO2020124904A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould

Definitions

  • the invention belongs to the technical field of mold manufacturing, and particularly relates to a bottom mold with an octagonal water channel.
  • blow molding plastic preforms In the process of blow molding plastic preforms, it is generally divided into four steps: mold clamping, blow molding, cooling, and demolding.
  • the preform cooling step takes the largest proportion of time, and the bottle
  • the cooling effect of the billet directly affects the quality of the preform.
  • the bottom of the billet In order to improve the cooling effect of the bottom of the billet, the bottom of the billet is not easy to whiten, dent, avoid gate drawing, and cracking.
  • the existing improvements to improve cooling efficiency are roughly divided into For the two major categories of structural improvement and temperature control improvement, the uniformity of the temperature distribution of the mold is a key factor to ensure the quality and dimensional stability of the product.
  • the shortcomings of the existing mold structure are:
  • the present invention provides a bottom mold with an octagonal water channel with a large cooling area and simple processing.
  • a bottom mold with an octagonal water channel the lower end of the bottom mold body is provided with an injection section docked with the output end of the injection molding machine, and the upper end of the bottom mold body is provided with a cavity for forming a bottle bottom, the bottom
  • the middle part of the mold body is provided with an injection channel connecting the cavity and the injection section, characterized in that: the middle part of the bottom mold body is provided with a cooling water channel structure, and the cooling water channel structure includes 4 cooling grooves and 4 communication holes.
  • Four cooling grooves are equally distributed on the side wall of the bottom mold body, and the four communication holes connect the cooling grooves to form an octagon-shaped cooling water channel.
  • the four cooling grooves and the four communication holes are alternately distributed and connected, and the center axes of the two adjacent communication holes are perpendicular to each other.
  • the bottom of the bottom mold body is provided with a screw hole for fixed installation, and the screw hole is provided outside the injection section.
  • the pouring channel and the cooling water channel structure are isolated from each other.
  • the diameter of the communication hole is set to be between 6 mm and 12 mm.
  • the surface roughness of the cooling channel structure is less than or equal to 1.6 ⁇ m.
  • the bottom mold body is an integrally formed structure.
  • the beneficial effects of the present invention are: a bottom mold with an octagonal water channel of the present invention, by providing 4 cooling grooves, 4 communication holes alternately distributed and connected in the middle of the bottom mold body, and 4 cooling grooves and Four communication holes communicate with each other to form an octagonal cooling water channel, which increases the cooling area of the billet bottom and improves the cooling effect of the billet bottom; further by sequentially injecting injection sections and pouring on the central axis of the bottom mold body
  • the channel and the cavity are provided with a large-area octagonal cooling water channel under the cavity, so that the forming efficiency of the billet bottom is faster and the forming quality is higher.
  • Figure 1 is a perspective view of this embodiment
  • FIG. 3 is a cross-sectional view of section A-A in FIG. 2;
  • FIG. 4 is a cross-sectional view of section B-B in FIG. 2.
  • This embodiment discloses a bottom mold with an octagonal water channel.
  • the bottom end of the bottom mold body 1 is provided with an injection section 2 that is connected to the output end of the injection molding machine.
  • the top end of the bottom mold body 1 is provided with a bottle bottom
  • an injection channel 4 connecting the cavity 3 and the injection section 2 is provided in the middle of the bottom mold body 1, characterized in that: a cooling water channel structure 5 is provided in the middle of the bottom mold body 1, the cooling
  • the water channel structure 5 includes four cooling grooves 51 and four communication holes 52, the four cooling grooves 51 are equally distributed on the side wall of the bottom mold body 1, the four communication holes 52 communicate the cooling groove 51 to form an octagon
  • a water inlet and a water outlet for connecting cooling water are provided on the outside of the cooling tank 51, and the structure of the water inlet and the water outlet matches the interface of the cooling water pipe, which is convenient for the installation of the bottom mold body 1 through the bottom.
  • Four cooling grooves 51 and four communication holes 52 are alternately distributed and connected in the middle of the mold body 1, and the four cooling grooves 51 and the four communication holes 52 communicate with each other to form an octagon-shaped cooling water channel, so that the cooling area of the billet bottom Increase the cooling effect of the bottom of the billet.
  • the four cooling slots 51 and the four communication holes 52 are alternately distributed and connected, and the center axes of the two adjacent communication holes 52 are perpendicular to each other.
  • the bottom of the bottom mold body 1 is provided with threaded holes 6 for fixed installation, and the threaded holes 6 are disposed outside the injection section 2.
  • the injection channel 4 and the cooling water channel structure 5 are isolated from each other, which makes the installation of the bottom mold body 1 easier, and the bottom mold body 1 matches the injection port of the injection molding machine, which facilitates the injection molding process.
  • the diameter of the communication hole 52 is set to 10 mm.
  • the surface roughness of the cooling water channel structure 5 is 1.6 ⁇ m.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Dislcosed is a bottom mould with an octagonal water channel. A lower end of a base mould body (1) is provided with an injection section (2) abutting against an output end of an injection moulding machine; an upper end of the bottom mould body (1) is provided with a cavity (3) for moulding a bottle bottom; and a pouring channel (4) connecting the cavity (3) and the injection section (2) is provided in the middle of the base mould body (1), and a water cooling channel structure is provided in the middle of the base mould body (1). The water cooling channel structure comprises four cooling slots (51) and four communication holes (52), wherein the four cooling slots (51) are uniformly distributed in a side wall of the base mould body (1), and the four communication holes (52) communicate with the cooling slots (51) to form an octagonal water cooling channel.

Description

一种带有八边形水道的底模Bottom mold with octagonal water channel 技术领域Technical field

本发明属于模具制造的技术领域，具体涉及一种带有八边形水道的底模。The invention belongs to the technical field of mold manufacturing, and particularly relates to a bottom mold with an octagonal water channel.

背景技术Background technique

在塑料瓶坯吹塑成型过程中，一般分为合模、吹塑、冷却、脱模四个步骤，而在此过程中，瓶坯冷却这一步骤所占的时间比例是最大的，同时瓶坯的冷却效果优劣直接影响瓶坯的品质，为了改善坯底的冷却效果，使坯底不易发白、凹陷、避免浇口拉丝、拉裂等，现有的提高冷却效率的改进方式大致分为结构改进和温控改进两大类，模具的温度分布的均匀性是保证制品的质量和尺寸稳定的一个关键性因素，现有的模具结构的不足之处在于：In the process of blow molding plastic preforms, it is generally divided into four steps: mold clamping, blow molding, cooling, and demolding. In this process, the preform cooling step takes the largest proportion of time, and the bottle The cooling effect of the billet directly affects the quality of the preform. In order to improve the cooling effect of the bottom of the billet, the bottom of the billet is not easy to whiten, dent, avoid gate drawing, and cracking. The existing improvements to improve cooling efficiency are roughly divided into For the two major categories of structural improvement and temperature control improvement, the uniformity of the temperature distribution of the mold is a key factor to ensure the quality and dimensional stability of the product. The shortcomings of the existing mold structure are:

(1)冷却水道的设计成型面积小，冷却效果差；(1) The design area of the cooling channel is small, and the cooling effect is poor;

(2)冷却水道的加工不方便，冷却水道在加工时容易钻破；(2) The processing of the cooling water channel is inconvenient, and the cooling water channel is easily drilled during processing;

(3)冷却水道的尺寸测量不方便，需要使用三坐标检测仪进行测量。(3) The measurement of the size of the cooling water channel is inconvenient, and a three-coordinate detector is required for measurement.

发明内容Summary of the invention

为了克服现有技术的不足，本发明提供一种冷却面积大、加工简单的带有八边形水道的底模。In order to overcome the shortcomings of the prior art, the present invention provides a bottom mold with an octagonal water channel with a large cooling area and simple processing.

本发明解决其技术问题所采用的技术方案是：The technical solutions adopted by the present invention to solve its technical problems are:

一种带有八边形水道的底模，所述底模本体下端设有与注塑机输出端对接的注塑段，所述底模本体的上端设有用于瓶底成型的型腔，所述底模本体中部设有连接型腔和注塑段的注浇通道，其特征在于：所述底模本体中部设有冷却水道结构，所述冷却水道结构包括4个冷却槽、4个连通孔，所述4个冷却槽均分在底模本体侧壁上，所述4个连通孔将冷却槽连通形成八边形形状的冷却水道。A bottom mold with an octagonal water channel, the lower end of the bottom mold body is provided with an injection section docked with the output end of the injection molding machine, and the upper end of the bottom mold body is provided with a cavity for forming a bottle bottom, the bottom The middle part of the mold body is provided with an injection channel connecting the cavity and the injection section, characterized in that: the middle part of the bottom mold body is provided with a cooling water channel structure, and the cooling water channel structure includes 4 cooling grooves and 4 communication holes. Four cooling grooves are equally distributed on the side wall of the bottom mold body, and the four communication holes connect the cooling grooves to form an octagon-shaped cooling water channel.

作为本发明的进一步改进，所述4个冷却槽、4个连通孔分别交替分布连接，所述相邻的两个连通孔的中心轴线相互垂直。As a further improvement of the present invention, the four cooling grooves and the four communication holes are alternately distributed and connected, and the center axes of the two adjacent communication holes are perpendicular to each other.

作为本发明的进一步改进，所述底模本体的底部设有用于固定安装的螺纹孔，所述螺纹孔设置在注塑段的外侧。As a further improvement of the present invention, the bottom of the bottom mold body is provided with a screw hole for fixed installation, and the screw hole is provided outside the injection section.

作为本发明的进一步改进，所述注浇通道与冷却水道结构相互隔绝。As a further improvement of the present invention, the pouring channel and the cooling water channel structure are isolated from each other.

作为本发明的进一步改进，所述连通孔的直径设置为6mm～12mm之间。As a further improvement of the present invention, the diameter of the communication hole is set to be between 6 mm and 12 mm.

作为本发明的进一步改进，所述冷却水道结构的表面粗糙度小于或等于1.6μm。As a further improvement of the present invention, the surface roughness of the cooling channel structure is less than or equal to 1.6 μm.

作为本发明的进一步改进，所述底模本体为一体成型结构。As a further improvement of the present invention, the bottom mold body is an integrally formed structure.

本发明的有益效果是：本发明的一种带有八边形水道的底模，通过在底模本体的中部设置交替分布连接的4个冷却槽、4个连通孔，并且4个冷却槽和4个连通孔连通形成八边形形状的冷却水道，使坯底的冷却面积增大，提高坯底的冷却效果；进一步的通过在底模本体的中轴线上设置依次相互连通的注塑段、浇注通道和型腔，在型腔的下方设置大面积的八边形冷却水道，使坯底的成型效率更快，成型质量更高。The beneficial effects of the present invention are: a bottom mold with an octagonal water channel of the present invention, by providing 4 cooling grooves, 4 communication holes alternately distributed and connected in the middle of the bottom mold body, and 4 cooling grooves and Four communication holes communicate with each other to form an octagonal cooling water channel, which increases the cooling area of the billet bottom and improves the cooling effect of the billet bottom; further by sequentially injecting injection sections and pouring on the central axis of the bottom mold body The channel and the cavity are provided with a large-area octagonal cooling water channel under the cavity, so that the forming efficiency of the billet bottom is faster and the forming quality is higher.

附图说明BRIEF DESCRIPTION

下面结合附图和实施方式对本发明进一步说明：The present invention is further described below with reference to the drawings and embodiments:

图1为本实施例的立体图；Figure 1 is a perspective view of this embodiment;

图2为本实施例的主视图；2 is a front view of this embodiment;

图3为图2中剖面A-A的剖视图；3 is a cross-sectional view of section A-A in FIG. 2;

图4为图2中剖面B-B的剖视图。4 is a cross-sectional view of section B-B in FIG. 2.

具体实施方式detailed description

为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention.

实施例：Example:

本实施例公开了一种带有八边形水道的底模，所述底模本体1下端设有与注塑机输出端对接的注塑段2，所述底模本体1的上端设有用于瓶底成型的型腔3，所述底模本体1中部设有连接型腔3和注塑段2的注浇通道4，其特征在于：所述底模本体1中部设有冷却水道结构5，所述冷却水道结构5包括4个冷却槽51、4个连通孔52，所述4个冷却槽51均分在底模本体1侧壁上，所述4个连通孔52将冷却槽51连通形成八边形形状的冷却水道，在冷却槽51的外侧设置连接冷却水的进水口和出水口，所述进水口与出水口的结构与冷却水管的接口相匹配，便于底模本体1的安装，通过在底模本体1的中部设置交替分布连接的4个冷却槽51、4个连通孔52，并且4个冷却槽51和4个连通孔52连通形成八边形形状的冷却水道，使坯底的冷却面积增大，提高坯底的冷却效果。This embodiment discloses a bottom mold with an octagonal water channel. The bottom end of the bottom mold body 1 is provided with an injection section 2 that is connected to the output end of the injection molding machine. The top end of the bottom mold body 1 is provided with a bottle bottom In the molded cavity 3, an injection channel 4 connecting the cavity 3 and the injection section 2 is provided in the middle of the bottom mold body 1, characterized in that: a cooling water channel structure 5 is provided in the middle of the bottom mold body 1, the cooling The water channel structure 5 includes four cooling grooves 51 and four communication holes 52, the four cooling grooves 51 are equally distributed on the side wall of the bottom mold body 1, the four communication holes 52 communicate the cooling groove 51 to form an octagon In the shape of a cooling water channel, a water inlet and a water outlet for connecting cooling water are provided on the outside of the cooling tank 51, and the structure of the water inlet and the water outlet matches the interface of the cooling water pipe, which is convenient for the installation of the bottom mold body 1 through the bottom. Four cooling grooves 51 and four communication holes 52 are alternately distributed and connected in the middle of the mold body 1, and the four cooling grooves 51 and the four communication holes 52 communicate with each other to form an octagon-shaped cooling water channel, so that the cooling area of the billet bottom Increase the cooling effect of the bottom of the billet.

作为本发明的进一步改进，所述4个冷却槽51、4个连通孔52分别交替分布连接，所述相邻的两个连通孔52的中心轴线相互垂直。所述底模本体1的底部设有用于固定安装的螺纹孔6，所述螺纹孔6设置在注塑段2的外侧。所述注浇通道4与冷却水道结构5相互隔绝，使底模本体1的安装更简便，并且底模本体1与注塑机的注射口相匹配，便于注塑工艺的进行。As a further improvement of the present invention, the four cooling slots 51 and the four communication holes 52 are alternately distributed and connected, and the center axes of the two adjacent communication holes 52 are perpendicular to each other. The bottom of the bottom mold body 1 is provided with threaded holes 6 for fixed installation, and the threaded holes 6 are disposed outside the injection section 2. The injection channel 4 and the cooling water channel structure 5 are isolated from each other, which makes the installation of the bottom mold body 1 easier, and the bottom mold body 1 matches the injection port of the injection molding machine, which facilitates the injection molding process.

作为本发明的进一步改进，所述连通孔52的直径设置为10mm。所述冷却水道结构 5的表面粗糙度为1.6μm，通过合理设置的冷却水道的横截面积，以及其内壁的表面粗糙度，使冷却水流动更顺畅，冷却水道内不会积聚大量的污垢而导致堵塞，保证冷却水道的冷却效果不会降低。As a further improvement of the present invention, the diameter of the communication hole 52 is set to 10 mm. The surface roughness of the cooling water channel structure 5 is 1.6 μm. By reasonably setting the cross-sectional area of the cooling water channel and the surface roughness of its inner wall, the cooling water flows more smoothly, and a large amount of dirt will not accumulate in the cooling water channel. It will cause blockage and ensure that the cooling effect of the cooling water channel will not be reduced.

以上所述仅为本发明的优选实施方式，只要以基本相同手段实现本发明目的的技术方案都属于本发明的保护范围之内。The above is only the preferred embodiment of the present invention, as long as the technical solutions for achieving the object of the present invention by basically the same means fall within the protection scope of the present invention.

Claims (7)

一种带有八边形水道的底模，所述底模本体(1)下端设有与注塑机输出端对接的注塑段(2)，所述底模本体(1)的上端设有用于瓶底成型的型腔(3)，所述底模本体(1)中部设有连接型腔(3)和注塑段(2)的注浇通道(4)，其特征在于：所述底模本体(1)中部设有冷却水道结构(5)，所述冷却水道结构(5)包括4个冷却槽(51)、4个连通孔(52)，所述4个冷却槽(51)均分在底模本体(1)侧壁上，所述4个连通孔(52)将冷却槽(51)连通形成八边形形状的冷却水道。A bottom mold with an octagonal water channel, the bottom end of the bottom mold body (1) is provided with an injection section (2) connected to the output end of the injection molding machine, and the top end of the bottom mold body (1) is provided with a bottle An under-molded cavity (3), an injection channel (4) connecting the cavity (3) and the injection section (2) is provided in the middle of the bottom mold body (1), characterized in that: the bottom mold body (3) 1) A cooling water channel structure (5) is provided in the middle, and the cooling water channel structure (5) includes 4 cooling grooves (51) and 4 communication holes (52), and the 4 cooling grooves (51) are evenly distributed at the bottom On the side wall of the mold body (1), the four communication holes (52) communicate the cooling groove (51) to form an octagon-shaped cooling water channel. 根据权利要求1所述的一种带有八边形水道的底模，其特征在于：所述4个冷却槽(51)、4个连通孔(52)分别交替分布连接，所述相邻的两个连通孔(52)的中心轴线相互垂直。The bottom mold with an octagonal water channel according to claim 1, wherein the four cooling grooves (51) and the four communication holes (52) are alternately distributed and connected, and the adjacent The central axes of the two communication holes (52) are perpendicular to each other. 根据权利要求1所述的一种带有八边形水道的底模，其特征在于：所述底模本体(1)的底部设有用于固定安装的螺纹孔(6)，所述螺纹孔(6)设置在注塑段(2)的外侧。The bottom mold with an octagonal water channel according to claim 1, characterized in that: the bottom of the bottom mold body (1) is provided with a screw hole (6) for fixed installation, and the screw hole ( 6) It is arranged outside the injection section (2). 根据权利要求1所述的一种带有八边形水道的底模，其特征在于：所述注浇通道(4)与冷却水道结构(5)相互隔绝。The bottom mold with an octagonal water channel according to claim 1, characterized in that the pouring channel (4) and the cooling water channel structure (5) are isolated from each other. 根据权利要求1或5任一所述的一种带有八边形水道的底模，其特征在于：所述连通孔(52)的直径设置为6mm～12mm之间。The bottom mold with an octagonal water channel according to any one of claims 1 or 5, wherein the diameter of the communication hole (52) is set to be between 6 mm and 12 mm. 根据权利要求1所述的一种带有八边形水道的底模，其特征在于：所述冷却水道结构(5)的表面粗糙度小于或等于1.6μm。The bottom mold with an octagonal water channel according to claim 1, wherein the surface roughness of the cooling water channel structure (5) is less than or equal to 1.6 μm. 根据权利要求1所述的一种带有八边形水道的底模，其特征在于：所述底模本体(1)为一体成型结构。The bottom mold with an octagonal water channel according to claim 1, characterized in that the bottom mold body (1) is an integrally formed structure.
PCT/CN2019/083559 2018-12-16 2019-04-20 Base mould with octagonal water channel Ceased WO2020124904A1 (en)

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CN201811538336.8A CN109732879A (en) 2018-12-16 2018-12-16 A bottom mold with an octagonal water channel
CN201811538336.8 2018-12-16

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Publication number Priority date Publication date Assignee Title
CN110142928A (en) * 2019-05-15 2019-08-20 佛山市康铂特精密机械有限公司 A mold cavity bottom for preform injection cooling and its processing technology

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