The present disclosure provides an injection machine for a recycled plastic injection molding system. The injection machine comprises a supplying system configured to drive plastics from an entry end to downstream of receiving route, a heating system disposed to downstream of the supplying system and configured to melt plastics and drive plastics to the downstream of receiving route, and a buffer system disposed to downstream of the heating system and configured to be a receiving state and a supplying state. When the buffer system is in the receiving state, the buffer system is configured to receiving plastics from the heating system. When the buffer system is in the supplying state, the buffer system is configured to drive plastics to downstream of the receiving route.

The present disclosure provides an injection machine for a recycled plastic injection molding system. The injection machine comprises a supplying system configured to drive plastics from an entry end to downstream of receiving route, a heating system disposed to downstream of the supplying system and configured to melt plastics and drive plastics to the downstream of receiving route, and a buffer system disposed to downstream of the heating system and configured to be a receiving state and a supplying state. When the buffer system is in the receiving state, the buffer system is configured to receiving plastics from the heating system. When the buffer system is in the supplying state, the buffer system is configured to drive plastics to downstream of the receiving route.

A joining member configured to join a temperature-controlled member and a temperature control jacket includes a temperature control jacket attachment part attached to the temperature control jacket, and a temperature-controlled member attachment part attached to the temperature-controlled member. The temperature control jacket attachment part includes a temperature control jacket-side opening into which a first bolt is insertable, and the temperature-controlled member attachment part includes a temperature-controlled member-side opening into which a second bolt is insertable. The temperature control jacket-side opening and/or the temperature-controlled member-side opening are configured to allow change in positions where the first and second bolts are inserted.

A joining member configured to join a temperature-controlled member and a temperature control jacket includes a temperature control jacket attachment part attached to the temperature control jacket, and a temperature-controlled member attachment part attached to the temperature-controlled member. The temperature control jacket attachment part includes a temperature control jacket-side opening into which a first bolt is insertable, and the temperature-controlled member attachment part includes a temperature-controlled member-side opening into which a second bolt is insertable. The temperature control jacket-side opening and/or the temperature-controlled member-side opening are configured to allow change in positions where the first and second bolts are inserted.

A protective cover for a plasticising cylinder of a shaping machinehas an elongate internal space which is enclosed by at least one wall and in which the plasticising cylinder can be arranged. A terminal box for heating strips arranged on the plasticising cylinder projects into the internal space, and one of the walls of the protective cover has an opening which is closed by an openable cover member. In the opened condition, the opening allows access to the terminal box or the interior of the terminal box.

A protective cover for a plasticising cylinder of a shaping machinehas an elongate internal space which is enclosed by at least one wall and in which the plasticising cylinder can be arranged. A terminal box for heating strips arranged on the plasticising cylinder projects into the internal space, and one of the walls of the protective cover has an opening which is closed by an openable cover member. In the opened condition, the opening allows access to the terminal box or the interior of the terminal box.

A plasticizing unit for a molding machine, comprising a plasticizing cylinder, wherein the plasticizing cylinder comprises a feed zone and a filling opening for material to be plasticized, said filling opening being arranged adjacent to the feeding zone, wherein a thermal separating device is arranged between the feed zone and the filling opening and wherein an active tempering device for the filling opening is provided, characterized in that the active tempering device comprises at least one tempering conduit and in that a tempering medium turbulent flows through the tempering conduit during operation of the active tempering device.

A plasticizing unit for a molding machine, comprising a plasticizing cylinder, wherein the plasticizing cylinder comprises a feed zone and a filling opening for material to be plasticized, said filling opening being arranged adjacent to the feeding zone, wherein a thermal separating device is arranged between the feed zone and the filling opening and wherein an active tempering device for the filling opening is provided, characterized in that the active tempering device comprises at least one tempering conduit and in that a tempering medium turbulent flows through the tempering conduit during operation of the active tempering device.

A temperature control method includes: a step of obtaining, by means of PID control, a first energization rate based on a first temperature difference between an actually measured temperature and a target temperature; a step of obtaining a second energization rate based on a second temperature difference between the ambient temperature of the environment in which a heating barrel is disposed and the target temperature; a step of obtaining a corrected energization rate on the basis of the result of comparison of the first energization rate and the second energization rate; and a step of controlling the electrical power to be supplied to a heater on the basis of the corrected energization rate. The corrected energization rate is set to any of predetermined first, second, and third conditions on the basis of the comparison result.

A temperature control method includes: a step of obtaining, by means of PID control, a first energization rate based on a first temperature difference between an actually measured temperature and a target temperature; a step of obtaining a second energization rate based on a second temperature difference between the ambient temperature of the environment in which a heating barrel is disposed and the target temperature; a step of obtaining a corrected energization rate on the basis of the result of comparison of the first energization rate and the second energization rate; and a step of controlling the electrical power to be supplied to a heater on the basis of the corrected energization rate. The corrected energization rate is set to any of predetermined first, second, and third conditions on the basis of the comparison result.