Metering and mixing modular system for liquid silicone rubber.The application field for LSR 1. (networking) LSR - Label Switching Router. 2. (operating system) LSR - Local Shared Resources. injection molding injection molding n. A manufacturing process for forming objects, as of plastic or metal, by heating the molding material to a fluid state and injecting it into a mold. is continuously widening. Standard technologies available from 2KM to date cover a large spectrum of applications with exacting precision at very competitive price to performance ratios. However, some technical limitations exist that restrict the long-term feasibility of certain applications. It is for this reason 2KM developed the PFM-LSR high-precision metering system. Advantages of the PFM-LSR technology PFM-LSR technology offers such advantages as exact metering directly onto the injection screw to eliminate pressure losses; the variable shortest mixing distance eliminates the need for a material pressure reduction valve; variable material feed (1 liter/1/4 gal.; 20 liters/5 gal.; 200 liters/55 gal.; central feed); and a modular concept with simple expansion possibilities. Exact metering directly onto the injection screw The PFM metering module is a very compact dosing unit that unifies all functional elements into one mechanically installed unit. The material feed is controlled with individual dosing pistons. Before each feed of the injection screw, each material component is pressurized pres·sur·ize tr.v. pres·sur·ized, pres·sur·iz·ing, pres·sur·iz·es 1. To maintain normal air pressure in (an enclosure, as an aircraft or submarine). 2. to a pre-programmable pressure. In this way, the result is an exactly controlled and reproducible mix ratio. Since the feeding pressures are always controlled and constant before the material flows into the injection screw, the prerequisite for very small shot sizes is achieved and the shot can be metered at an exact mix ratio. The actual filling of the screw ensues thereby through control of material velocity. This is an important factor for significantly improving accuracy, especially for very small shot sizes. The result is a slow, even flowing fill of the injection screw at low pressure. On the other hand, larger material flows with higher pressures can also be injected with exacting accuracy. This means the minimum and maximum dosing tolerances of standard units Standard units may refer to:
adv. 1. Along with this. 2. By this means; hereby. herewith Adverb Formal together with this: significantly expanded. The PFM-LSR metering and mixing unit is available for various sizes. Maximum shot sizes up to 16 ccm, 34 ccm and 50 ccm are available. Shortest variable mixing distance The mixing distance for the PFM-LSR is reduced to the actual mixing block and the static mixer A static mixer is a device for blending (mixing) two liquid materials. The device consists of mixer elements contained in a cylindrical (tube)or squared housing. The static mixer elements consist of a series of baffles that are made from metal or a variety of plastics. . A material pressure reduction valve is not necessary, due to the uniquely controlled dosing concept of the system. The benefits are said to include reduced flushing and maintenance requirements; simple adaptation of the mixing distance to individual needs; and eliminated mechanical parts such as material pressure reduction valves and material on/off needle valves needle valve n. A valve having a slender point fitting into a conical seat, used to regulate accurately the flow of a liquid or gas. which are not required to maintain performance accuracy due to pressure losses. Variable material feed The PFM-LSR module allows the automatic filling pressure of the injection screw to be pre-programmed by the operator. This means the module is independent of the original material feeding system, and therefore the system's required pressures. Using an adapter block, the module can at any time be converted to cartridge feeding when, for example, customers wish to perform trials with other silicone varieties without the use of the original material feeding system, or to clean/flush the feeding system. Modular concept with simple expansion possibilities Each PFM-LSR dosing module is supplied with an operator console. The accompanying software incorporates all possible configurations, like central feeding systems, feeding with existing pumping units and adaptation to cartridge systems. The dosing pistons are hydraulically driven by either a unit system supplied by 2KM, or, in cases of production using cartridges, it is possible to tap the hydraulic system Noun 1. hydraulic system - a mechanism operated by the resistance offered or the pressure transmitted when a liquid is forced through a small opening or tube of the injection molding machine Injection molding machine (also known as injection press) - a machine for making plastic parts. Manufacturing products by injection molding process. Consist of two main parts, an injection unit and a clamping unit. . Outlook The modular concept of the PFM-LSR system with the flexible, exchangeable software and hardware is an existing 2KM dosing technology with a long term future growth potential. The PFM-LSR system sets new boundaries in LSR injection molding developments and empowers a leading role for the metering and mixing possibilities within this industry. Gary Bauer Gary L. Bauer (born May 4 1946, Covington, Kentucky)[1] is a conservative American politician notable for his ties to several evangelical Christian groups and campaigns. In 1973, Bauer received a Juris Doctor degree from Georgetown University. 2KM North America North America, third largest continent (1990 est. pop. 365,000,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. |
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