咨询热线:

0531-88771136

您的当前位置: 首页 > 新闻中心 > 正文

山东模具:注塑模具的内部你了解吗?

来源:http://www.jnhjgs.cn     发布时间:2019-06-17 17:59:16    点击:

  模具的构造固然由于塑料种类和性能、塑料制品的外形和构造以及注射机的类型等不同而可能千变万化,但是根本构造是分歧的。模具主要由浇注系统、调温系统、成型零件和构造零件组成。其中浇注系统和成型零件是与塑料直接接触局部,并随塑料和制品而变化,是塑模中比较复杂,变化比较大,请求加工光亮度和精度比较高的局部。
  Although the structure of moulds may vary greatly due to the different types and properties of plastics, the shape and structure of plastics products and the types of injection machines, the fundamental structure is different. The die is mainly composed of pouring system, temperature regulating system, forming parts and structural parts. Among them, the casting system and the moulding parts are directly in contact with the plastics, and change with the plastics and products. They are the most complex parts in the moulds, which require the highest processing brightness and accuracy.
  1、浇注系统
  1. Gating system
  浇注系统是指塑料从射嘴进入型腔前的流道局部,包括主流道、冷料穴、分流道和浇口等。
  The gating system refers to the part of the runner before the plastic enters the cavity from the nozzle, including the main runner, the cold material hole, the shunt runner and the gate, etc.
  浇注系统又称流道系统,它是将塑料熔体由注射机喷嘴引向型腔的一组进料通道,通常由主流道、分流道、浇口和冷料穴组成。它直接关系到塑料制品的成型质量和消费效率。
  Gating system, also known as runner system, is a group of feeding channels that lead plastic melt from injector nozzle to cavity, usually composed of main runner, shunt runner, gate and cold hole. It is directly related to the forming quality and consumption efficiency of plastic products.
  2、主流道
  2. Main Street
  它是模具中衔接注塑机射嘴至分流道或型腔的一段通道。主流道顶部呈凹形以便与喷嘴衔接。主流道进口直径应略大于喷嘴直径(0.8mm)以防止溢料,并避免两者因衔接不准而发作的堵截。进口直径依据制品大小而定,普通为4-8mm。主流道直径应向内扩展呈3°到5°的角度,以便流道赘物的脱模。
  It is a passage connecting the injection moulding machine nozzle to the shunt channel or cavity in the mould. The top of the main channel is concave to connect with the nozzle. The inlet diameter of the main channel should be slightly larger than that of the nozzle (0.8mm) to prevent spills and to avoid blocking due to improper connection between the two. Import diameter depends on the size of the product, usually 4-8 mm. The diameter of the main passage should be extended inward at an angle of 3 to 5 degrees in order to release the excess of the passage.
山东模具
  3、冷料穴
  3. Cold Material Points
  它是设在主流道末端的一个空穴,用以捕集射嘴端部两次注射之间所产生的冷料,从而避免分流道或浇口的梗塞。假如冷料一旦混入型腔,则所制制品中就容易产生内应力。冷料穴的直径约8-10mm,深度为6mm。为了便于脱模,其底部常由脱模杆承当。脱模杆的顶部宜设计成迂回钩形或设下陷沟槽,以便脱模时能顺利拉出主流道赘物。
  It is a hole located at the end of the main channel to trap the cold material produced between the two injections at the end of the nozzle, thus avoiding the obstruction of the diversion channel or gate. If the cold material is mixed into the cavity, the internal stress will easily occur in the product. The diameter of the cold material hole is about 8-10 mm and the depth is 6 mm. In order to facilitate demoulding, the bottom of the demoulding rod is usually supported by the demoulding rod. The top of the demoulding rod should be designed as a circuitous hook or a sinking groove, so as to pull out the main stream of redundancy smoothly when demoulding.
  4、分流道
  4. Shunt Channel
  它是多槽模中衔接主流道和各个型腔的通道。为使熔料以等速度充溢各型腔,分流道在塑模上的排列应成对称和等间隔散布。分流道截面的外形和尺寸对塑料熔体的活动、制品脱模和模具制造的难易都有影响。
  It is the channel connecting the main channel and each cavity in the multi-groove die. In order to make the melt fill the cavity at the same speed, the shunts should be arranged symmetrically and dispersed at equal intervals on the plastic mould. The shape and size of the shunt section have an effect on the activity of the plastic melt, the demoulding of the products and the manufacturing of the die.
  假如按相等料量的活动来说,则以圆形截面的流道阻力比较小。但因圆柱形流道的比外表小,对分流道赘物的冷却不利,而且这种分流道必需开设在两半模上,既费工又不易对准。
  If the flow resistance of the circular section is the smallest according to the activity of the same amount of material. However, because the cylindrical channel is smaller than the external surface, it is not conducive to cooling of the diversion channel, and the diversion channel must be set on the two-half die, which is labor-intensive and difficult to align.
  因而,经常采用的是梯形或半圆形截面的分流道,且开设在带有脱模杆的一半模具上。流道外表必需抛光以减少活动阻力提供较快的充模速度。流道的尺寸决议于塑料种类,制品的尺寸和厚度。对大多数热塑性塑料来说,分流道截面宽度均不超越8m,特大的可达10-12m,特小的2-3m。在满足需求的前提下应尽量减小截面积,以增加分流道赘物和延长冷却时间。
  As a result, trapezoidal or semi-circular cross-section dividers are often used, and they are arranged on half of the die with a demoulding rod. The runner surface must be polished to reduce moving resistance and provide faster filling speed. The size of the runner depends on the type of plastic, the size and thickness of the product. For most thermoplastics, the cross-section width of the shunt is not more than 8m, the super-large can reach 10-12m, and the super-small can reach 2-3m. On the premise of meeting the demand, the section area should be reduced as far as possible to increase the shunt redundancy and prolong the cooling time.
  山东模具:注塑模具的内部您现在了解吗,如果您有购买山东模具的需求,欢迎来电咨询,我们的网站是http://www.jnhjgs.cn
  Shandong Mould: Do you know the inside of injection mould now? If you have the need to buy Shandong Mould, please call us for consultation. Our website is http://www.jnhjgs.cn.
联系我们 contact

山东济南模具_铝合金压铸厂-济南宏捷模具有限公司

电话1:13173017488

电话2:18615459955

传真:0531-88771136

邮箱:hlm369@126.com

地址:山东省济南市大桥镇大王村北跨商务中心后三层白楼

山东济南模具_铝合金压铸厂-济南宏捷模具有限公司 手机: 13173017488 咨询热线: 0531-88771136 咨询热线:18615459955 邮箱:hlm369@126.com

公司地址: 山东省济南市大桥镇大王村北跨商务中心后三层白楼