The present embodiments provide an apparatus for producing a pressure vessel blank, comprising at least one connection element, a multi-part blow-moulding tool, and at least one blowing pin. The present embodiments further provide a pressure vessel comprising at least one connection element, a pressure vessel blank, and a supporting shell connected to and supporting the pressure vessel blank. An aspect of the present embodiments provides a process for producing a pressure vessel blank using an apparatus comprising at least one connection element that enables a shortened time for producing a pressure vessel blank with increased stability under pressure.

The invention relates to a method for producing hollow bodies from thermoplastic material and to an apparatus for carrying out the method. The method comprises the molding of at least two sheet-like preforms in web form of thermoplastic material into two complementary shells in a multi-part tool, which in a closed position forms a mold impression, and the joining together of the shells to form an essentially closed hollow body, the preforms being brought between the parts of the tool in an opened receiving position of the parts of the tool and the preforms being placed into the part-cavities by applying differential pressure and being at least partially molded in them into shells. The shells are joined together to form an essentially closed hollow body by closing the tool to form a closed mold impression. The method is distinguished by the fact that the preforms are molded in the part-cavities while the parts of the tool are located in the opened receiving position.

A production device for a fuel tank, having two or more built-in components attached to an inside of a fuel tank body when the fuel tank body is formed, includes: jigs configured to have the built-in components placed thereon; and a feed robot, as a feed device, configured to feed the built-in components, along with the jigs having the built-in components placed thereon, to a position below molding dies. The feed device may feed the jig, having the built-in components placed thereon, to the position via a subsurface feed path leading to the position.

The hollow body molding aid includes a body, a connector, a first profiling assembly, a second profiling assembly, and a positioning mechanism. The connector is fixedly connected to the body. The first profiling assembly is fixedly disposed on one side of the body and is configured to position one half of a reinforced housing. The second profiling assembly is fixedly disposed on the other side of the body and is configured to position the other half of the reinforced housing. The positioning mechanism is disposed on the first profiling assembly and the second profiling assembly. The reinforced housing can be positioned, thus guaranteeing molding quality of the reinforced housing and blanks. In addition, the reinforced housing can be accurately positioned in a cavity of a mold through a manipulator, without the need to use a plurality of air cylinders for step-by-step driving.

A parison separation device (30) according to an embodiment includes a cutter (31) with a cutting edge (35), the cutting edge (35) extending in a one direction and facing upward, and a block (33), the cutter being attached to an upper part of the block (33), inclined surfaces (37) being formed on both sides of the block (33) in a thickness direction of the cutting edge (35), each of the inclined surfaces (37) including a component that is inclined increasingly downward as it gets closer to one direction side end, in which the parison separation device (30) is disposed on a discharging direction side of a discharging port of a parison and configured to cut the parison discharged from the discharging port.

A production device for a fuel tank, having two or more built-in components attached to an inside of a fuel tank body when the fuel tank body is formed, includes: jigs configured to have the built-in components placed thereon; and a feed robot, as a feed device, configured to feed the built-in components, along with the jigs having the built-in components placed thereon, to a position below molding dies. The feed device may feed the jig, having the built-in components placed thereon, to the position via a subsurface feed path leading to the position.

The present embodiments provide an apparatus for producing a pressure vessel blank, comprising at least one connection element, a multi-part blow-moulding tool, and at least one blowing pin. The present embodiments further provide a pressure vessel comprising at least one connection element, a pressure vessel blank, and a supporting shell connected to and supporting the pressure vessel blank. An aspect of the present embodiments provides a process for producing a pressure vessel blank using an apparatus comprising at least one connection element that enables a shortened time for producing a pressure vessel blank with increased stability under pressure.

A parison separation device (30) according to an embodiment includes a cutter (31) with a cutting edge (35), the cutting edge (35) extending in a one direction and facing upward, and a block (33), the cutter being attached to an upper part of the block (33), inclined surfaces (37) being formed on both sides of the block (33) in a thickness direction of the cutting edge (35), each of the inclined surfaces (37) including a component that is inclined increasingly downward as it gets closer to one direction side end, in which the parison separation device (30) is disposed on a discharging direction side of a discharging port of a parison and configured to cut the parison discharged from the discharging port.

A method for manufacturing a plastic fuel tank including: a) inserting a plastic parison including two distinct parts into an open two-cavity mold; b) inserting a core, bearing at least part of a reinforcing element configured to create a link between the two parison parts, inside the parison; c) pressing the parison firmly against the mold cavities, for example by blowing through the core and/or creating suction behind the cavities; d) fixing the part of the reinforcing element to at least one of the parison parts using the core; e) withdrawing the core; f) closing the mold, bringing its two cavities together to grip the two parison parts around their periphery to weld them together; g) injecting a pressurized fluid into the mold and/or creating a vacuum behind the mold cavities to press the parison firmly against the mold cavities; and h) opening the mold and extracting the tank.

A method for molding a two-piece blow molded hollow tank by using auxiliary male molds includes the following steps: 1) blanking two parisons; 2) closing mold halves of a mold and a pre-molding template; 3) pre-stretching the molten parisons by using auxiliary male molds in the pre-molding template; 4) performing internal high-pressure blow molding, and pre-molding two housing portions; 5) opening the mold, and withdrawing the pre-molding template; 6) moving in a component built-in mechanism to perform built-in component connection; 7) moving out the component built-in mechanism; 8) closing the mold for the second time and finally blow molding a hollow tank; and 9) opening the mold and taking out the product.