Apparatus for injection-molding plastic material articles consisting of a plurality of components
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-045/40
B29C-045/42
출원번호
US-0904937
(2001-07-12)
우선권정보
DE-0033759 (2000-07-12)
발명자
/ 주소
Herbst, Richard
출원인 / 주소
Richard Herbst GmbH
대리인 / 주소
Knobbe, Martens, Olson & Bear, LLP
인용정보
피인용 횟수 :
3인용 특허 :
7
초록▼
A method and an apparatus for injection-molding plastic material articles, in particular articles consisting of a plurality of components, are disclosed. An injection molding machine has a mold, e.g. a stack mold. The mold is adapted to be temperature-controlled differently in different areas of the
A method and an apparatus for injection-molding plastic material articles, in particular articles consisting of a plurality of components, are disclosed. An injection molding machine has a mold, e.g. a stack mold. The mold is adapted to be temperature-controlled differently in different areas of the mold. A center platen of the stack mold on a first side thereof cooperates with a first mold portion via a first separation plane and, on a second side thereof cooperates with a second mold portion via a second separation plane. The stack mold is provided with a plurality of first, smaller cavities as well as with a plurality of second, larger cavities. A device are provided for injection-molding the first components of the plastic material article in first cavities located in the first separation plane and injection-molding the second components on the first components within the second cavities. A handling system unmolds the first components from the first cavities, transfers same from the first to the second separation plane, places same into the second cavities, and unmolds the plastic material articles from the second cavities. The handling system is provided with e.g. two arms adapted to be inserted into the first and into the second separation plane, respectively, independently one from the other.
대표청구항▼
1. An apparatus for injection-molding plastic material articles having at least first and second components, the apparatus having open and closed configurations and the apparatus comprising:a center platen having a first and an opposite second side;a first mold portion cooperating with the first sid
1. An apparatus for injection-molding plastic material articles having at least first and second components, the apparatus having open and closed configurations and the apparatus comprising:a center platen having a first and an opposite second side;a first mold portion cooperating with the first side of the center platen thereby defining a first separation plane;a second mold portion cooperating with the second side of the center platen thereby defining a second separation plane wherein the open configuration is defined by the center platen and the first and second mold portions being distanced from each other along a separation axis thereby defining gaps therebetween and wherein the closed configuration is defined by the center platen and the first and second mold portions being positioned adjacent each other;a plurality of first, cavities positioned adjacent the first separation plane;a plurality of second, larger cavities positioned adjacent the second separation plane;a first temperature control element positioned adjacent the first separation plane and regulating at a first temperature;a second temperature control element positioned adjacent the second separation plane and regulating at a second temperature;a first injector assembly providing plastic material to the first cavities so as to form the first components;a second injector assembly providing plastic material to the second cavities so as to form the second components on the first components thereby forming the plastic material articles; anda handling system, the handling system removing the first components from the first cavities, transferring the first components to the second separation plane, placing the first components in the second cavities, and unmolding the plastic material articles from the second cavities. 2. The apparatus of claim 1, wherein the handling system comprises a robot having arms wherein the arms are extensible along an extension axis into the gaps between the center platen and the first and the second mold portions when the apparatus is in the open configuration wherein the arms extend substantially along the extension axis and wherein the extension axis is substantially perpendicular to the separation axis. 3. The apparatus of claim 2, wherein the arms comprise a first arm extensible into the first separation plane wherein the first arm is provided with seats for the first components and a second arm having two sides extensible into the second separation plane wherein the second arm is provided with seats on the two sides for the plastic material articles wherein one of the sides of the second arm faces the first arm and the other side of the second arm is opposite the first arm. 4. The apparatus of claim 3, wherein the second arm comprises two sub-arms each having opposing sides wherein the seats of the second arm are positioned on the opposing sides of the two sub-arms. 5. The apparatus of claim 3, further comprising a transfer station having a rest position wherein the transfer station transfers the first components from the seats of the first arm to the seats of the second arm. 6. The apparatus of claim 5, wherein the transfer station is displaceable along a transfer axis the transfer axis being substantially perpendicular to the extension axis. 7. The apparatus of claim 6, wherein the transfer station in the rest position is located adjacent the first arm so as to transfer the first components from the first arm to the transfer station. 8. The apparatus of claim 7, wherein, following the transfer of the first components from the first arm to the transfer station, the first arm is displaced away from the transfer axis and the transfer station is displaced so as to be adjacent the second arm. 9. The apparatus of claim 3, wherein the robot is rotatable about the extension axis such that, following rotation of the robot, the first arm is adjacent the second separation plane and the second arm is adjacent the first separation plane. 10. The apparatus of claim 9, wherein the second arm is rotatable about the extension axis. 11. The apparatus of claim 3, further comprising a conveyor, the conveyor removing the plastic material articles from adjacent the second arm. 12. The apparatus of claim 11, wherein the plastic material articles are transferred to the conveyor from the side of the second arm opposite the first arm. 13. The apparatus of claim 11, wherein the plastic material articles are transferred to the conveyor from the side of the second arm facing the first arm. 14. An apparatus for injection-molding plastic material articles having at least first and second components, the apparatus comprising:a center platen having a first and an opposite second side;a first mold portion cooperating with the first side of the center platen thereby defining a first separation plane;a second mold portion cooperating with the second side of the center platen thereby defining a second separation plane;a plurality of first, cavities positioned adjacent the first separation plane;a plurality of second, larger cavities positioned adjacent the second separation plane;a first injector assembly providing plastic material to the first cavities so as to form the first components;a second injector assembly providing plastic material to the second cavities so as to form the second components on the first components thereby forming the plastic material articles; anda handling system comprising at least two arms independently extendable into the first and second separation planes, the handling system removing the first components from the first cavities, transferring the first components to the second separation plane, placing the first components in the second cavities, and unmolding the plastic material articles from the second cavities. 15. The apparatus of claim 14, further comprising:a first temperature control element positioned adjacent the first separation plane and regulating at a first temperature; anda second temperature control element positioned adjacent the second separation plane and regulating at a second temperature. 16. An injection molding machine for injection molding plastic material articles comprising at least a first and a second mold portion wherein the first and the second mold portions cooperate thereby defining a separation plane and further comprising a temperature controller for temperature regulating different areas of the separation plane at different temperatures. 17. The injection molding machine of claim 16, further comprising a center platen having a first and a second side the center platen being arranged in a stack mold configuration with the at least first and second mold portions such that the first side of the center platen cooperates with the first mold portion thereby defining a first separation plane and the second side of the center platen cooperates with the second mold portion thereby defining a second separation plane and said temperature controller adapted to temperature regulate the first and the second separation planes at different temperatures. 18. The injection molding machine of claim 17, wherein the injection molding machine is provided with a plurality of first, smaller cavities adjacent the first separation plane and a plurality of second, larger cavities adjacent the second separation plane.
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