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自封袋的注塑挤出怎么使用?

发布日期:2021-09-23 作者:www.jnsuliao.com 点击:

自封塑模具的温度,要比型坯模具的温度低10~30℃左右。压力。注射压力及保压压力。注射压力可在注射机额外压力范围内调整。注射压力缺乏,型坯外表不平坦,熔体充模量缺乏,易造成型坯缺口、漏底、螺纹尺度缺乏等缺点;注射压力过高,易呈现型坯芯棒偏斜,型坯呈现飞边。注射压力可控制在(2.0~2.5)X105Pa。熔体被注射充模后,注射机仍需坚持满足的保压压力,才干得到尺度准确、外表平坦光亮、比容值较低的型坯。
The temperature of self sealing plastic mold is about 10 ~ 30 ℃ lower than that of parison mold. Pressure. Injection pressure and holding pressure. The injection pressure can be adjusted within the additional pressure range of the injection machine. Lack of injection pressure, uneven surface of parison, lack of melt filling modulus, easy to create parison gap, bottom leakage, lack of thread size and so on; If the injection pressure is too high, it is easy to show parison mandrel deflection and parison flash. The injection pressure can be controlled at (2.0 ~ 2.5) x105pa. After the melt is injected and filled, the injection machine still needs to adhere to the pressure holding pressure to obtain the parison with accurate scale, flat and bright appearance and low specific volume value.
与此同时,锁模设备亦需要坚持满足的锁模力,以防胀模。模具的锁模力与注射压力及型腔投影面积有关。吹胀气压。吹胀气压是指在吹塑模具内将型坯吹胀成容器的压缩空气压力。 阴阳自封袋?压缩空气压力,通常控制在0.8~1.OMPa范围内。进步吹胀气压,可削减型坯吹胀缺乏、肩部变形、瓶身洼陷等缺点;进步压缩空气的体积流量(充气速度)可进步出产功率,改进容器的外表光泽度和壁厚均匀性。
At the same time, the mold locking equipment also needs to adhere to the mold locking force to prevent mold expansion. The clamping force of the mold is related to the injection pressure and the projected area of the cavity. Inflation pressure. The blowing pressure refers to the compressed air pressure that blows the parison into a container in the blow mold. Yin Yang self sealing bag? The compressed air pressure is usually controlled within the range of 0.8 ~ 1.ompa. Improving the blowing pressure can reduce the defects such as lack of parison blowing, shoulder deformation and bottle body depression; Increasing the volume flow (inflation speed) of compressed air can improve the production power and improve the surface gloss and wall thickness uniformity of the container.
济南自封口袋
时刻。注射吹塑成型周期是各段技术进程所需时刻的归纳。它包含物料混炼塑化时刻、注射时刻、模具等待时刻、吹塑时刻、模具启闭间隔时刻,通常为10-20s。成型周期是在确保容器质量的条件下,获得高出产功率的归纳平衡成果。加速物料塑化时刻,可缩短成型周期,但以不影响物料塑化质量为条件;延伸注射时刻、保压时刻、吹胀时刻,有利于改进容器的质量,却会下降出产功率。 自封袋注射吹塑成型的开车操作应按照以下过程进行。
Moment. Injection blow molding cycle is the induction of the time required for each technical process. It includes material mixing and plasticizing time, injection time, mold waiting time, blow molding time and mold opening and closing interval, usually 10-20s. Forming cycle is the inductive balance result of obtaining high production power under the condition of ensuring container quality. Accelerating the plasticizing time of materials can shorten the forming cycle, but it does not affect the plasticizing quality of materials; Extending the injection time, pressure holding time and inflation time is conducive to improving the quality of the container, but will reduce the production power. The start-up operation of self sealing bag injection blow molding shall be carried out according to the following process.
接通电源,按技术需求对料筒进行加热,到达设定温度后,应恒温lh,使各点温度均匀共同。翻开料斗座冷却水开关,对料斗座进行冷却,以防加料口呈现“架桥”表象。选用手动对空注射,调查物料塑化状况,若物料塑化均匀即可出产开端。通过几个循环操作,芯棒、型腔和吹塑模的温度趋于合适,就可以发动注射机的主动操作。
Turn on the power supply and heat the barrel according to the technical requirements. After reaching the set temperature, keep the temperature constant for 1h to make the temperature of each point uniform and common. Turn on the cooling water switch of the hopper base to cool the hopper base to prevent the feeding port from showing the appearance of "bridging". Select manual air injection to investigate the plasticization of materials. If the materials are plasticized evenly, the production can start. Through several cycle operations, the temperature of the mandrel, cavity and blow mold tends to be appropriate, and the active operation of the injection machine can be started.
脱模工位要对制品进行抽检,看其质量、尺度是不是符合需求,有无飞边、缺料和破洞。芯棒上恣意部位若是黏附有塑料,容器的壁厚就会发生不均匀,故应从每个芯棒取样,送至质量查验部分进行查验,若是合格,即可正常出产。注射吹塑成型的泊车操作应按照以下过程进行。把操作方法选择开关转变到手动方位。
The demoulding station shall conduct sampling inspection on the products to see whether their quality and scale meet the requirements, and whether there are flash, material shortage and holes. If any part of the mandrel is attached with plastic, the wall thickness of the container will be uneven. Therefore, each mandrel shall be sampled and sent to the quality inspection part for inspection. If it is qualified, it can be produced normally. The parking operation of injection blow molding shall be carried out according to the following process. Change the operation method selection switch to manual position.
封闭加料挡板,中止持续向料筒供料。将模具置于半合模状况。注射座推回。整理料筒中的余料,对加工中易分化的树脂如PVC等,应选用螺杆清洁专用料清洁洁净。把一切操作开关和按钮置于断开方位,断电、断水、断气。泊车后要擦洗机器部位,并清扫环境卫生。
Close the feeding baffle and stop the continuous feeding to the barrel. Place the mold in the semi closed state. Push the injection seat back. For the remaining materials in the finishing barrel, the resin that is easy to differentiate in processing, such as PVC, shall be cleaned with special materials for screw cleaning. Put all operation switches and buttons in the off position to cut off power, water and gas. After parking, scrub the machine parts and clean the environment.