Patent classifications
B29C45/73
Method and device for producing components or profiles
A method for producing components or profiles from at least one solidifiable plastic compound in an injection moulding facility, said method comprising stationary mould components and mould components which are movable with respect thereto. The method includes injection of solidifiable plastic compound into a channel formed in the movable mould components and, from there, via connections either in portions into one or more mould cavities. The channel is enclosed by at least one stationary, temperature-controlled mould component. A continuous channel compound strand is formed with attachment compound strands, which is transported away from the injection point with increasing cooling and solidification and increasing length, together with the filled mould cavities and mould cavity portions. The channel compound strand, together with the connection mass strands, after its solidification and after opening the mould cavity or the mould cavities is separated from the component(s), and the component or the components is/are ejected.
Method and device for the variothermal temperature control of injection moulds
A method for the variothermal temperature control of an injection mould using a temperature control device, the method including at least the following steps: in a learning phase, determining a temperature control characteristic of the temperature-controllable system including at least the injection mould and the temperature control device, in order to obtain individual reference values for the system, with which the temperature control device can be controlled in order to obtain a nominal temperature profile; and in a production phase: temperature control of the injection mould with the reference values determined during the learning phase; determining deviations of an actual temperature profile of the injection mould in relation to the nominal temperature profile during the production cycle and calculating corrected reference values from these deviations; and carrying out a resulting production process using the corrected reference values.
Method and device for the variothermal temperature control of injection moulds
A method for the variothermal temperature control of an injection mould using a temperature control device, the method including at least the following steps: in a learning phase, determining a temperature control characteristic of the temperature-controllable system including at least the injection mould and the temperature control device, in order to obtain individual reference values for the system, with which the temperature control device can be controlled in order to obtain a nominal temperature profile; and in a production phase: temperature control of the injection mould with the reference values determined during the learning phase; determining deviations of an actual temperature profile of the injection mould in relation to the nominal temperature profile during the production cycle and calculating corrected reference values from these deviations; and carrying out a resulting production process using the corrected reference values.
Injection Molding Systems and Methods
Techniques are described for injection molding. When material inside a cavity of a tool is solidified into a molded part, the tool imparts a finished surface onto the part, including sidewalls with a zero or low-draft angle. To allow separation from the cavity without using sleeves or sliders, the cavity is widened, just prior to the part being ejected. The tool is made from metal with a high coefficient of thermal expansion, so the size of the cavity can be manipulated using temperature control. Heat applied to an outer portion of the metal surrounding the cavity pulls the metal away from the part creating an air gap within the cavity. Carefully applied cooling to an inner portion of the metal blocks the heat and keeps the surface temperature under control, which preserves the finished surface on the part. When the air gap allows, the part releases from the cavity with the finished surface intact.
Injection Molding Systems and Methods
Techniques are described for injection molding. When material inside a cavity of a tool is solidified into a molded part, the tool imparts a finished surface onto the part, including sidewalls with a zero or low-draft angle. To allow separation from the cavity without using sleeves or sliders, the cavity is widened, just prior to the part being ejected. The tool is made from metal with a high coefficient of thermal expansion, so the size of the cavity can be manipulated using temperature control. Heat applied to an outer portion of the metal surrounding the cavity pulls the metal away from the part creating an air gap within the cavity. Carefully applied cooling to an inner portion of the metal blocks the heat and keeps the surface temperature under control, which preserves the finished surface on the part. When the air gap allows, the part releases from the cavity with the finished surface intact.
Material plasticizing device
The material plasticizing device includes a rotor having a material introduction portion open on an outer peripheral side surface, and a groove forming surface on which a scroll groove kneading a material introduced from the material introduction portion is formed; a case that surrounds an outer periphery of the groove forming surface; a facing portion having a facing surface that faces the groove forming surface, a heater that heats the material in the scroll groove, and a communication hole through which the material plasticized by a heat of the heater flows; and a material supply source that stores the material, in which a coupling pipeline is formed in the case, a material supply path is formed by the case and the outer peripheral side surface of the rotor, and the material flows into the material introduction portion through the coupling pipeline and the material supply path.
Material plasticizing device
The material plasticizing device includes a rotor having a material introduction portion open on an outer peripheral side surface, and a groove forming surface on which a scroll groove kneading a material introduced from the material introduction portion is formed; a case that surrounds an outer periphery of the groove forming surface; a facing portion having a facing surface that faces the groove forming surface, a heater that heats the material in the scroll groove, and a communication hole through which the material plasticized by a heat of the heater flows; and a material supply source that stores the material, in which a coupling pipeline is formed in the case, a material supply path is formed by the case and the outer peripheral side surface of the rotor, and the material flows into the material introduction portion through the coupling pipeline and the material supply path.
Temperature control device
A temperature control device is provided that is capable of making the temperature of a metallic mold speedily reach a target temperature. The temperature control device is provided with: a first medium circulating portion that circulates a medium via a first pipeline; a second medium circulating portion that circulates the medium via a second pipeline; a third medium circulating portion that circulates the medium via a third pipeline; a switching portion that switches the medium circulated through an object by selecting any one of the first pipeline, the second pipeline and the third pipeline; and a pressure supply portion that supplies a required pressure through a pressure pipe communicating with each of the first pipeline, the second pipeline and the third pipeline.
Temperature control device
A temperature control device is provided that is capable of making the temperature of a metallic mold speedily reach a target temperature. The temperature control device is provided with: a first medium circulating portion that circulates a medium via a first pipeline; a second medium circulating portion that circulates the medium via a second pipeline; a third medium circulating portion that circulates the medium via a third pipeline; a switching portion that switches the medium circulated through an object by selecting any one of the first pipeline, the second pipeline and the third pipeline; and a pressure supply portion that supplies a required pressure through a pressure pipe communicating with each of the first pipeline, the second pipeline and the third pipeline.
METHOD FOR PRODUCING FLOORBOARD FOR QUICK SIDESLIP INSTALLATION
A production method of a floor for quick side-slide installation includes the following steps: step 1: sorting of floor blanks; step 2: curing of the floor blanks; step 3: sanding of the floor blanks; step 4: cutting-to-thickness of the floor blanks; step 5: surface treatment of the floor blanks; step 6: cutting-to-length and molding of the floor blanks; step 7: spraying of anti-cracking oil on the floor blanks; step 8: plastic encapsulation of the floor blanks; step 9: application of a paint to back surfaces of the floor blanks; and step 10: application of the paint or vegetable oil to the floor blanks. A locking frame is hidden under bosses of a floor blank after being injection-molded, which achieves high locking accuracy and firm assembly.