摘要:
Provided is an injection nozzle and a molding apparatus which ensure injection pressure by suppressing resin leakage even when a resin material having a low viscosity is used. In injection molding, it is especially important that the injection nozzle and a fixed die are excellently kept in contact with each other and that the resin is not leaked. Resin leakage from between the injection nozzle and the fixed die lowers molding pressure, increases molding shrinkage of the resin, and directly affects the qualities of a molded product resulting in generation of a sink, transfer failure and the like. Since an O-ring in a circumferential groove of the nozzle closely comes in contact with a concave spherical surface while elastically transforming on the entire circumference, leakage is effectively suppressed even the resin is a heat-curable resin having a low viscosity.
摘要:
Provided are a structure of molding tools and an injection molding device that can easily perform molding of an optical element even from a resin of low velocity or the like and can suppress any negative effects by air. The structure of the molding tools includes between the molding tools (61, 62) a fixed molding tool (61) and a movable molding tool (62) and an O-ring (63a) for keeping air tightness and a resin seal (63b) for preventing any resin leakage. The O-ring (63a) performs decreasing of the pressure in a cavity (CV) formed by joining the molding tools (61, 62), whereby the vacuum molding in which resin supply and resin curing is carried out under a decreased pressure can be performed. Accordingly, the effects such as prevention of air bubbling due to air trapping by injected resin within the cavity (CV) can be attained. Furthermore, the resin seal (63b) can prevent any resin leakage from the molding tools (61, 62) even when the resin having a low viscosity is used.
摘要:
Provided is an injection nozzle and a molding apparatus which ensure injection pressure by suppressing resin leakage even when a resin material having a low viscosity is used. In injection molding, it is especially important that the injection nozzle and a fixed die are excellently kept in contact with each other and that the resin is not leaked. Resin leakage from between the injection nozzle and the fixed die lowers molding pressure, increases molding shrinkage of the resin, and directly affects the qualities of a molded product resulting in generation of a sink, transfer failure and the like. Since an O-ring in a circumferential groove of the nozzle closely comes in contact with a concave spherical surface while elastically transforming on the entire circumference, leakage is effectively suppressed even the resin is a heat-curable resin having a low viscosity.
摘要:
Provided are a structure of molding tools and an injection molding device that can easily perform molding of an optical element even from a resin of low velocity or the like and can suppress any negative effects by air. The structure of the molding tools includes between the molding tools (61, 62) a fixed molding tool (61) and a movable molding tool (62) and an O-ring (63a) for keeping air tightness and a resin seal (63b) for preventing any resin leakage. The O-ring (63a) performs decreasing of the pressure in a cavity (CV) formed by joining the molding tools (61, 62), whereby the vacuum molding in which resin supply and resin curing is carried out under a decreased pressure can be performed. Accordingly, the effects such as prevention of air bubbling due to air trapping by injected resin within the cavity (CV) can be attained. Furthermore, the resin seal (63b) can prevent any resin leakage from the molding tools (61, 62) even when the resin having a low viscosity is used.
摘要:
It is possible to provide a camera module manufacturing method and a camera model which can improve performance of a camera module without complicating the manufacturing method. A light shield is formed on the side surface of each lens body (11) and a lens support member (12). Thus it is possible to obtain the diaphragm function for regulating the incident light flux transmission area and the function for suppressing the intrusion of stray light without using a separate diaphragm or a light shielding member.
摘要:
In repeating strokes for injecting a resin material, a piston (13) is slid to an inlet position (P2) within a cylinder (12). Accordingly, when the piston (13) is moved backward further, the resin near the piston (13) is replaced with a fresh resin supplied from a resin reservoir section (RT). Therefore, in the subsequent injection stroke, only the fresh resin can be always injected. Thus, there is no possibility that the rein stays beyond the pot-life and starts to cure or causes an increase in viscosity within the cylinder (12). Further, any foreign matter such as a semi-cured resin is not produced. Therefore, clogging of the resin passage and the flow of the foreign matter into a molding cavity can be suppressed. As a result, given molding conditions can be always ensured, and, thus, highly accurate molding products can be produced with high reproducibility.
摘要:
It is possible to provide a camera module manufacturing method and a camera model which can improve performance of a camera module without complicating the manufacturing method. A light shield is formed on the side surface of each lens body (11) and a lens support member (12). Thus it is possible to obtain the diaphragm function for regulating the incident light flux transmission area and the function for suppressing the intrusion of stray light without using a separate diaphragm or a light shielding member.
摘要:
Provided are a wafer lens production method, an intermediate die, an optical component, a molding die, and a molding die production method. The production method of a wafer lens (1) includes a first intermediate die production step using a die (7), a second intermediate die production step using the first intermediate die (8), and a wafer lens production step using the second intermediate die (9). A first intermediate-die substrate (80) is provided with a depressed section (85) on the surface facing the die (7). When photo-curable resin (84A) is pressed, at least a portion closer to the first intermediate-die substrate (80) among the top (71a) and the peripheral section (77) of the die (7) is arranged in the depressed section (85), and a gap is provided so that the die (7) does not contact with a depressed plane (85a) of the depressed section (85).
摘要:
The aim is to regulate thickness on the optical axis in the production of wafer lenses. Disclosed is a wafer lens production method that is equipped with a dispensing process for dropping resin onto a molding die (64), an imprinting process for pressing either the molding die (64) or a glass substrate (2) toward the other, and a releasing process for releasing the glass substrate (2) from the molding die (64), and that repeats the processing from the dispensing process to the releasing process as a single cycle and successively forms resin lenses (4) on the glass substrate 2); wherein the height (A) of the non-lens area (6) surrounding the lenses (4) and the heights (B and C) of the glass substrate (2) are measured between the releasing process of a first cycle and the dispensing process of a second cycle, and the position of the molding die (64) is corrected for imprinting processes of the second cycle, on the basis of the heights (A-C).
摘要:
Provided are a wafer lens production method, an intermediate die, an optical component, a molding die, and a molding die production method. The production method of a wafer lens (1) includes a first intermediate die production step using a die (7), a second intermediate die production step using the first intermediate die (8), and a wafer lens production step using the second intermediate die (9). A first intermediate-die substrate (80) is provided with a depressed section (85) on the surface facing the die (7). When photo-curable resin (84A) is pressed, at least a portion closer to the first intermediate-die substrate (80) among the top (71a) and the peripheral section (77) of the die (7) is arranged in the depressed section (85), and a gap is provided so that the die (7) does not contact with a depressed plane (85a) of the depressed section (85).