WO2020181401A1 - 一种注塑机的锁模机构 - Google Patents

一种注塑机的锁模机构 Download PDF

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Publication number
WO2020181401A1
WO2020181401A1 PCT/CN2019/000125 CN2019000125W WO2020181401A1 WO 2020181401 A1 WO2020181401 A1 WO 2020181401A1 CN 2019000125 W CN2019000125 W CN 2019000125W WO 2020181401 A1 WO2020181401 A1 WO 2020181401A1
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Prior art keywords
linear guide
movable template
injection molding
molding machine
sliding
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PCT/CN2019/000125
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English (en)
French (fr)
Inventor
邓俊钧
高林
董毅
蔡跃霖
何学妃
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宁波双马机械工业有限公司
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Publication of WO2020181401A1 publication Critical patent/WO2020181401A1/zh

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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
    • 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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/68—Mould opening, closing or clamping devices hydro-mechanical

Definitions

  • the invention relates to an injection molding machine, in particular to a clamping mechanism of the injection molding machine.
  • Injection molding machine also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make thermoplastic or thermoset plastics into various shapes of plastic products.
  • injection molding machine due to the high pressure when the plastic is taken into the mold for molding, the mold may be opened. Therefore, the injection molding machine is equipped with a mold clamping mechanism.
  • the Chinese invention patent No. 201110250342.5 discloses a clamping mechanism of a plastic injection molding machine, which includes a base, a thrust base, a movable template and a fixed template arranged in sequence and the centers of which are on the same central axis.
  • the base is fixed
  • a guide rod is provided, the thrust seat and the movable template are sleeved on the guide rod, the fixed template is fixedly connected to the end of the guide rod, the movable template and the base
  • a connecting rod group is arranged in between, at least one oil cylinder is fixedly arranged inside the thrust seat, and the piston rod of the oil cylinder is fixedly connected with the movable template.
  • the sliding positioning of the movable template mainly relies on the guide rod as the positioning reference. Because the guide rod is under its own weight, the middle part of the guide rod will sag, and using it as the positioning reference will easily lead to a decrease in positioning accuracy. Affect the clamping effect
  • the technical problem to be solved by the present invention is to provide a mold clamping mechanism of an injection molding machine with simple structure and accurate positioning.
  • a mold clamping mechanism of an injection molding machine includes a base, a thrust base, a movable template, and a fixed template that are arranged in sequence from front to back and whose centers are on the same central axis.
  • the base is fixedly provided with a guide rod, and the thrust
  • the seat and the movable template are sleeved on the guide rod
  • the fixed template is fixedly connected to the end of the guide rod
  • the movable template is provided below the movable template for moving the movable template forward and backward.
  • a linear guide rail mechanism providing a positioning reference is provided on the frame of the injection molding machine.
  • the linear guide mechanism includes a linear guide horizontally arranged along the forward and backward movement direction of the moving template, the linear guide is fixedly arranged on the frame of the injection molding machine, and the linear guide can slide forward and backward.
  • a sliding block is arranged on the ground, and the sliding block is fixedly arranged at the lower part of the movable template.
  • the sliding block includes a mounting part, the mounting part is fixedly arranged at the lower part of the movable template, two vertical sliding arms are arranged side by side at an interval on both sides of the mounting part, and the sliding arm Protruding sliding parts are provided on the inner end surface of the linear guide rail, sliding grooves that cooperate with the sliding parts are provided on both sides of the linear guide, and the sliding parts are slidably arranged in the corresponding positions of the In the sliding groove.
  • the structure of the above-mentioned slider and linear guide is simple.
  • the mounting part on the slider is used for fixed connection with the mobile template.
  • the cooperation of the two sliding arms and the sliding part ensures that the slider can be stably installed on the linear slide.
  • the sliding groove and sliding The cooperation of the parts realizes the forward and backward sliding of the slider.
  • the linear guide rails are two parallel and spaced apart, and each linear guide rail is provided with two sliding blocks that can slide back and forth. Two linear guide rails and four sliding blocks make the sliding of the movable template more stable and the positioning more accurate.
  • the movable template is provided with a mounting hole for allowing the guide rod to pass through, the mounting hole is coaxial with the guide rod, and the inner diameter of the mounting hole is larger than the outer diameter of the guide rod. path.
  • a connecting rod mechanism is arranged between the movable template and the base, at least one oil cylinder is fixedly arranged inside the thrust seat, and the piston rod of the oil cylinder is fixedly connected with the movable template.
  • the oil cylinder is used to provide thrust
  • the linkage mechanism is used to amplify the thrust provided by the oil cylinder, so that the clamping force acts on the center of the moving template, and the utilization rate of the clamping force is improved.
  • the present invention has the advantages that the linear guide mechanism provided under the movable mold plate provides a positioning basis for the front and rear movement of the movable mold plate, and the structure is simple, and the linear guide mechanism is set on the frame of the injection molding machine. Therefore, the positioning basis is determined by the accuracy of the machined frame. Compared with the traditional structure, the positioning accuracy is effectively improved and the positioning is more accurate.
  • Figure 1 is a schematic diagram of the overall structure of the present invention.
  • Figure 2 is a schematic structural diagram of the linear guide mechanism of the present invention.
  • Figure 3 is a schematic diagram of the structure of the slider in the present invention.
  • Fig. 4 is a schematic cross-sectional structure diagram of the movable template and the guide rod in the present invention.
  • a clamping mechanism of an injection molding machine includes a base 1, a thrust base 2, a movable template 3, and a fixed template 4 arranged in sequence from front to back and whose centers are on the same central axis.
  • a guide rod 5 is fixed on the upper part, the thrust seat 2 and the movable template 3 are sleeved on the guide rod 5, the fixed template 4 is fixedly connected to the end of the guide rod 5, and the movable template 3 is provided with the front and back of the movable template 3.
  • the linear guide rail mechanism that provides the positioning reference is moved, and the linear guide rail mechanism is set on the frame of the injection molding machine (not shown in the figure).
  • the linear guide mechanism includes a linear guide 6 arranged horizontally along the forward and backward movement direction of the movable template 3.
  • the linear guide 6 is fixedly arranged on the frame of the injection molding machine, and the linear guide 6 is slidably arranged back and forth.
  • the sliding block 7 is fixedly arranged at the lower part of the movable template 3.
  • the linear guide 6 has a simple structure and low cost. The cooperation of the linear guide 6 and the slider 7 provides a precise positioning basis for the front and rear movement of the movable template 3, which effectively ensures the positioning accuracy.
  • the slider 7 includes a mounting portion 71, which is fixedly arranged at the lower part of the movable template 3. On both sides of the mounting portion 71, two vertical sliding arms 72 are arranged at intervals. A protruding sliding portion 73 is provided on the inner end surface, and sliding grooves 61 matched with the sliding portion 73 are provided on both sides of the linear guide 6, and the sliding portions 73 are slidably arranged in the sliding grooves 61 at corresponding positions.
  • the above-mentioned slider 7 and linear guide 6 have a simple structure.
  • the mounting portion 71 on the slider 7 is used for fixed connection with the movable template 3.
  • the cooperation of the two sliding arms 72 and the sliding portion 73 ensures that the slider 7 can be stably installed on the linear On the sliding rail, the cooperation of the sliding groove 61 and the sliding portion 73 realizes the forward and backward sliding movement of the slider 7.
  • the linear guides 6 are two parallel and spaced apart, and each linear guide 6 is provided with two sliding blocks 7 which can slide back and forth.
  • the two linear guides 6 cooperate with the four sliding blocks 7 to make the sliding of the movable template 3 more stable and the positioning more accurate.
  • the movable template 3 is provided with a mounting hole 31 for the guide rod 5 to pass through.
  • the mounting hole 31 is coaxial with the guide rod 5, and the inner diameter of the mounting hole 31 is larger than the outer diameter of the guide rod 5.
  • a link mechanism 8 is provided between the movable template 3 and the base 1, at least one oil cylinder (not shown in the figure) is fixedly provided inside the thrust base 2, and the piston rod of the oil cylinder is fixedly connected to the movable template 3. .
  • the oil cylinder is used to provide thrust
  • the connecting rod mechanism 8 is used to amplify the thrust provided by the oil cylinder, so that the clamping force acts on the center of the moving template 3, and the utilization rate of the clamping force is improved.

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

Abstract

一种注塑机的锁模机构，包括自前向后依次排列且其中心位于同一中心轴线上的底座(1)、推力座(2)、移动模板(3)和固定模板(4)，底座(1)上固定设置有导杆(5)，推力座(2)和移动模板(3)套设在导杆(5)上，固定模板(4)固定连接在导杆(5)的端部，移动模板(3)的下方设置有用于给移动模板(3)的前后移动提供定位基准的直线导轨机构，直线导轨机构设置在注塑机的机架上。优点是通过设置在移动模板(3)下方的直线导轨机构给移动模板(3)的前后移动提供定位基础，结构简单，且该直线导轨机构设置在注塑机的机架上，因此该定位基础便由加工后的机架的精度决定，与传统结构相比，有效提高了定位精度，使得定位更为精准。

Description

一种注塑机的锁模机构 技术领域
本发明涉及一种注塑机，尤其是涉及一种注塑机的锁模机构。
背景技术
注塑机又名注射成型机或注射机，它是将热塑性塑料或热固性塑料利用塑料成型模具制成各种形状的塑料制品的主要成型设备。在注塑机的注射成型作业过程中，由于塑料摄入模具内成型时的压力很高，可能使模具开启，因此注塑机上都设置有锁模机构。
专利号为201110250342.5的中国发明专利公开了一种塑料注射成型机的锁模机构，包括依次排列且其中心位于同一中心轴线上的底座、推力座、移动模板和固定模板，所述的底座上固定设置有导杆，所述的推力座和移动模板套设在所述的导杆上，所述的固定模板固定连接在所述的导杆的端部，所述的移动模板与所述的底座之间设置有连杆组，所述的推力座的内部固定设置有至少一个油缸，所述的油缸的活塞杆与所述的移动模板固定连接。上述公开的锁模机构，移动模板的滑动定位主要依靠导杆作为定位基准，由于导杆在自重作用下，导杆的中间部位会发生下垂，将其作为定位基准容易导致定位精度的下降，从而对锁模效果造成影响
发明内容
本发明所要解决的技术问题是提供一种结构简单、定位精准的注塑机的锁模机构。
本发明解决上述技术问题所采用的技术方案为：
一种注塑机的锁模机构，包括自前向后依次排列且其中心位于同一中心轴线上的底座、推力座、移动模板和固定模板，所述的底座上固定设置有导杆，所 述的推力座和移动模板套设在所述的导杆上，所述的固定模板固定连接在所述的导杆的端部，所述的移动模板的下方设置有用于给所述的移动模板的前后移动提供定位基准的直线导轨机构，所述的直线导轨机构设置在注塑机的机架上。
所述的直线导轨机构包括沿所述的移动模板的前后移动方向水平设置的直线导轨，所述的直线导轨固定设置在所述的注塑机的机架上，所述的直线导轨上可前后滑移地设置有滑块，所述的滑块固定设置在所述的移动模板的下部。上述直线导轨机构结构简单，成本低，通过直线导轨和滑块的配合，给移动模板的前后移动提供了精准的定位基础，有效确保了定位精度。
所述的滑块包括安装部，所述的安装部固定设置在所述的移动模板的下部，所述的安装部的两侧并列间隔设置有两个竖向的滑行臂，所述的滑行臂的内侧端面上设置有凸起的滑行部，所述的直线导轨的两侧设置有与所述的滑行部相配合的滑行槽，所述的滑行部可滑动地设置在对应位置的所述的滑行槽内。上述滑块和直线导轨的结构简单，滑块上的安装部用于与移动模板固定连接，两个滑行臂和滑行部的配合确保了滑块能够稳定安装在直线滑轨上，滑行槽和滑行部的配合实现了滑块的前后滑移。
所述的直线导轨为并列间隔设置的两条，每条所述的直线导轨上可前后滑移地设置有两个所述的滑块。两条直线导轨配合四个滑块，使得移动模板的滑动更为稳定，且定位更为精准。
所述的移动模板上设置有用于使所述的导杆穿过的安装孔，所述的安装孔与所述的导杆同轴，所述的安装孔的内径大于所述的导杆的外径。上述设计，使得移动模板在滑动过程中，全程与导杆为不接触状态，因此导杆和移动模板之间不需要进行润滑处理，从而提高了模板模区的清洁度。
所述的移动模板与所述的底座之间设置有连杆机构，所述的推力座的内部固定设置有至少一个油缸，所述的油缸的活塞杆与所述的移动模板固定连接。油缸用于提供推力，连杆机构用于将油缸提供的推力放大，使合模力作用在移动模板的中心，提高锁模力的使用率。
与现有技术相比，本发明的优点在于：通过设置在移动模板下方的直线导轨机构给移动模板的前后移动提供定位基础，结构简单，且该直线导轨机构设置在注塑机的机架上，因此该定位基础便由加工后的机架的精度决定，与传统结构相比，有效提高了定位精度，使得定位更为精准。
附图说明
图1为本发明的整体结构示意图；
图2为本发明中直线导轨机构的结构示意图；
图3为本发明中滑块的结构示意图；
图4为本发明中移动模板与导杆配合连接的剖视结构示意图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图1至图4所示，一种注塑机的锁模机构，包括自前向后依次排列且其中心位于同一中心轴线上的底座1、推力座2、移动模板3和固定模板4，底座1上固定设置有导杆5，推力座2和移动模板3套设在导杆5上，固定模板4固定连接在导杆5的端部，移动模板3的下方设置有用于给移动模板3的前后移动提供定位基准的直线导轨机构，直线导轨机构设置在注塑机的机架(图中未显示)上。
在此具体实施例中，直线导轨机构包括沿移动模板3的前后移动方向水平设置的直线导轨6，直线导轨6固定设置在注塑机的机架上，直线导轨6上可前 后滑移地设置有滑块7，滑块7固定设置在移动模板3的下部。上述直线导轨6机构结构简单，成本低，通过直线导轨6和滑块7的配合，给移动模板3的前后移动提供了精准的定位基础，有效确保了定位精度。
在此具体实施例中，滑块7包括安装部71，安装部71固定设置在移动模板3的下部，安装部71的两侧并列间隔设置有两个竖向的滑行臂72，滑行臂72的内侧端面上设置有凸起的滑行部73，直线导轨6的两侧设置有与滑行部73相配合的滑行槽61，滑行部73可滑动地设置在对应位置的滑行槽61内。上述滑块7和直线导轨6的结构简单，滑块7上的安装部71用于与移动模板3固定连接，两个滑行臂72和滑行部73的配合确保了滑块7能够稳定安装在直线滑轨上，滑行槽61和滑行部73的配合实现了滑块7的前后滑移。
在此具体实施例中，直线导轨6为并列间隔设置的两条，每条直线导轨6上可前后滑移地设置有两个滑块7。两条直线导轨6配合四个滑块7，使得移动模板3的滑动更为稳定，且定位更为精准。
在此具体实施例中，移动模板3上设置有用于使导杆5穿过的安装孔31，安装孔31与导杆5同轴，安装孔31的内径大于导杆5的外径。上述设计，使得移动模板3在滑动过程中，全程与导杆5为不接触状态，因此导杆5和移动模板3之间不需要进行润滑处理，从而提高了模板模区的清洁度。
在此具体实施例中，移动模板3与底座1之间设置有连杆机构8，推力座2的内部固定设置有至少一个油缸(图中未显示)，油缸的活塞杆与移动模板3固定连接。油缸用于提供推力，连杆机构8用于将油缸提供的推力放大，使合模力作用在移动模板3的中心，提高锁模力的使用率。

Claims (6)

  1. 一种注塑机的锁模机构，包括自前向后依次排列且其中心位于同一中心轴线上的底座、推力座、移动模板和固定模板，所述的底座上固定设置有导杆，所述的推力座和移动模板套设在所述的导杆上，所述的固定模板固定连接在所述的导杆的端部，其特征在于所述的移动模板的下方设置有用于给所述的移动模板的前后移动提供定位基准的直线导轨机构，所述的直线导轨机构设置在注塑机的机架上。
  2. 如权利要求1所述的一种注塑机的锁模机构，其特征在于所述的直线导轨机构包括沿所述的移动模板的前后移动方向水平设置的直线导轨，所述的直线导轨固定设置在所述的注塑机的机架上，所述的直线导轨上可前后滑移地设置有滑块，所述的滑块固定设置在所述的移动模板的下部。
  3. 如权利要求2所述的一种注塑机的锁模机构，其特征在于所述的滑块包括安装部，所述的安装部固定设置在所述的移动模板的下部，所述的安装部的两侧并列间隔设置有两个竖向的滑行臂，所述的滑行臂的内侧端面上设置有凸起的滑行部，所述的直线导轨的两侧设置有与所述的滑行部相配合的滑行槽，所述的滑行部可滑动地设置在对应位置的所述的滑行槽内。
  4. 如权利要求2或3所述的一种注塑机的锁模机构，其特征在于所述的直线导轨为并列间隔设置的两条，每条所述的直线导轨上可前后滑移地设置有两个所述的滑块。
  5. 如权利要求1所述的一种注塑机的锁模机构，其特征在于所述的移动模板上设置有用于使所述的导杆穿过的安装孔，所述的安装孔与所述的导杆同轴，所述的安装孔的内径大于所述的导杆的外径。
  6. 如权利要求1所述的一种注塑机的锁模机构，其特征在于所述的移动模板与所述的底座之间设置有连杆机构，所述的推力座的内部固定设置有至少一个油缸，所述的油缸的活塞杆与所述的移动模板固定连接。
PCT/CN2019/000125 2019-03-13 2019-06-17 一种注塑机的锁模机构 WO2020181401A1 (zh)

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