A core (14) which is typically held in front of the mold (13) is required for producing hollow plastic objects (10). This does not allow for a transverse reinforcement (11) which is formed from a prefabricated reinforcement tube to be pulled over the core (14). A method and device is provided for th
A core (14) which is typically held in front of the mold (13) is required for producing hollow plastic objects (10). This does not allow for a transverse reinforcement (11) which is formed from a prefabricated reinforcement tube to be pulled over the core (14). A method and device is provided for the core (14) to be held behind the mold (14) when viewed in the production direction (17). In this case, the front end (15) of the core (14), which is located in front of the mold (13), remains free, such that a transverse reinforcement (11) that has been formed from a prefabricated reinforcement tube can be pulled over the free front end (15) of the core (14).
대표청구항▼
1. A method for producing a hollow plastic object (10) having at least one transverse reinforcement (11), wherein the plastic object (10) is formed by a mold (13) and a core (14), and the transverse reinforcement (11) is guided over the core (14), and wherein the mold (13) forms the outer cross-sect
1. A method for producing a hollow plastic object (10) having at least one transverse reinforcement (11), wherein the plastic object (10) is formed by a mold (13) and a core (14), and the transverse reinforcement (11) is guided over the core (14), and wherein the mold (13) forms the outer cross-section of the hollow plastic object (10), the method comprising: mechanically holding the core (14) on at least one end region which is downstream of the mold (13), when viewed in the production direction (17), by at least one core holder (19), wherein the core holder (19) is configured to be selectively released from the core (14);collectively moving the mold (13) and the core (14) in a periodic manner, or an intermittent manner, in relation to the hollow plastic object (10) to be produced; andcollectively moving the mold (13) and the core (14), with the hollow plastic object (10) produced, in the production direction (17). 2. The method as claimed in claim 1, further comprising holding the core (14) on at least the rear end (16, 29) thereof, which is leading when viewed in the production direction, and which lies downstream of the mold (13) when viewed in the production direction (17). 3. The method as claimed in claim 1, further comprising retaining the plastic object (10), on a rear end region which lies downstream of the mold (13), when viewed in the production direction (17), when the mold (13) and the core (14) are being moved back counter to the production direction (17). 4. The method as claimed in claim 1, wherein the plastic object (10) is occasionally or periodically held by a gripper (20, 31) downstream of the mold (13) when viewed in the production direction (17). 5. The method as claimed in claim 1, wherein the plastic object (10), downstream of the mold (13), is pulled through the mold (13) over the core (14) by at least one displaceable gripper, and wherein the plastic object (10) is continuously pulled over the core (14) and through the mold (13) by the at least one displaceable gripper. 6. A method for producing a hollow plastic object (10) having at least one transverse reinforcement (11), wherein the plastic object (10) is formed by a mold (13) and a core (14), and the transverse reinforcement (11) is guided over the core (14), and wherein the mold (13) forms the outer cross-section of the hollow plastic object (10), the method comprising: mechanically holding the core (14) on at least one end region which is downstream of the mold (13), when viewed in the production direction (17), by at least one mechanical core holder (19), wherein the mechanical core holder (19) is configured to be selectively released from the core (14);collectively moving the mold (13) and the core (14) in a periodic manner, or an intermittent manner, in relation to the hollow plastic object (10) to be produced; andcollectively moving the mold (13) and the core (14), with the hollow plastic object (10) produced, in the production direction (17). wherein the core (14) is held in a non-contacting manner, via a magnetic force, on the end region downstream of the mold (13) by the at least one core holder (27), and wherein the core (14) is held in a non-contacting manner, via a magnetic force, on a front region, opposite the end region of the mold (13), by a second core holder (26).
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이 특허에 인용된 특허 (21)
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