摘要:
A core-pin assembly composed of a primary core-pin and at least one secondary core-pin. The primary core-pin has a primary core-pin body defining at least one element for coupling with a mating end of at least one secondary core-pin. The secondary core-pin has a mating end and a secondary core-pin body. The mating end is configured to fit with the element defined in the primary core-pin body such that the primary core-pin and the secondary core-pin(s) reversibly join together to form a branching structure. The assembly may further include at least one tertiary core-pin and the secondary core-pin body may define at least one element for coupling with a mating end of at least one tertiary core-pin. The mating end of the tertiary core pin is configured to fit with the secondary core-pin body such that the primary core-pin, secondary and tertiary core-pin(s) reversibly join together forming a branching structure.
摘要:
[Object] To suppress variations in the filling rate of molten resin in a cavity and suppress the occurrence of burrs in the opening of a filter portion. [Solution] Four gates 18 are provided in one end surface 14a of the inner cylinder cavity section 14 of an injection molding die 10 along the circumferential direction of an inner cylinder cavity section 14. The gates 18 are disposed in intermediate parts between a first central line 20 and a second central line 21 when the first central line 20 passes through the center of the inner cylinder cavity section 14 in parallel to the X-axis and the second central line 21 passes through the center of the inner cylinder cavity section 14 in parallel to the Y-axis on an X-Y plane orthogonal to a central axis 17 of the inner cylinder cavity section 14. The gates 18 are opened in the positions in which the filling rate is apt to reduce in the filter portion cavity section 16 and the gates 18 are not opened in the positions in which the filling rate is apt to increase in the filter portion cavity section 16.
摘要:
The present invention relates to a mesh filter including a filter unit 4 configured to connect an outer peripheral surface 2a of an inner cylinder 2 and an inner peripheral surface 3a of an outer cylinder 3, in which the inner cylinder 2, the outer cylinder 3, and the filter unit 4 are integrally molded by injecting a thermoplastic resin in a melted state into a cavity of a mold, a portion of the filter unit 4 other than a connecting portion between the inner cylinder 2 and the outer cylinder 3 is provided with a plurality of square-shaped openings 8 formed by a plurality of vertical ribs 6 formed equidistantly so as to be orthogonal to an X-axis and in parallel to a Y-axis, and a plurality of lateral ribs 7 formed equidistantly so as to be orthogonal to the vertical ribs 6 and in parallel with the X-axis, and the vertical ribs 6 and the lateral ribs 7 have rib widths (L2, L3) in a range from 0.07 to 0.1 mm and thicknesses (L4, L5) along a center axis 5 of the inner cylinder 2 in a range from 0.2 to 0.4 mm.
摘要:
Die Erfindung betrifft einen Verschlussdeckel (1) und eine Spritzgießform zu dessen Herstellung. Der Verschlussdeckel (1) besitzt einen Deckelboden (2) zum Verschluss einer Behälteröffnung (21) und eine Umfangswand (3). An der Umfangswand (3) ist ein Innengewinde (11) ausgebildet. Das Innengewinde (11) besitzt eine Gewindeachse (16) und ist durch mindestens zwei in Umfangsrichtung des Verschlussdeckels (1) voneinander beabstandete Gewindeabschnitte (14) gebildet. Der Verschlussdeckel (1) weist am Deckelboden (2) mindestens eine Entformungsöffnung (6) auf. Mindestens ein Gewindeabschnitt (14) ist in Richtung der Gewindeachse (16) des Innengewindes (11) gesehen von der Entformungsöffnung (6) am Deckelboden (2) des Verschlussdeckels (1) überdeckt. Die Spritzgießform (30) weist eine erste Formhälfte (31) und eine zweite Formhälfte (32) auf. Die erste Formhälfte (31) besitzt eine erste Formwand (35), die eine Außenseite (43) der Umfangswand (3) des Verschlussdeckels (1) abformt. An der ersten Formhälfte (31) ist mindestens ein Steg (33) angeordnet, der sich in einem radialen Abstand (d) zur Formwand (35) in Richtung der Gewindeachse (16) erstreckt. Zwischen der ersten Formhälfte (31) und der zweiten Formhälfte (32) ist ein Hohlraum (40) gebildet. Der mindestens eine Steg (33) ragt durch den Hohlraum (40) und besitzt eine bezogen auf die Gewindeachse (16) radial außenliegende Außenfläche (39) und eine bezogen auf die Gewindeachse (16) radial innenliegende Innenfläche (45), die beide den Hohlraum (40) begrenzen.
摘要:
Methods and systems for co-injection molding multilayer articles having one or more molded apertures disposed between a gate region and a peripheral region of the article are disclosed. The articles include an interior layer disposed between an inner layer and an outer layer. An article has interior layer coverage over at least 98% of a perimeter of a cross-section of the article downstream of the one or more molded apertures. A method includes modifying fluid flowing past an aperture-forming region of a mold cavity to compensate for the drag of the aperture-forming region on the velocity of the fluid flowing proximal to the aperture-forming region.