Abstract

The BU3300-V is a two platens injection molding machine of the BU Series produced by for the production of large size plastic parts such as car bumper, plastic pallets, dustbin etc. with a clamping force of 33000kN. The robotic arm recommended for this machine is the SW7730DS which is a heavy duty robotic arm with payload up to 75kg and is open to be equipped with A/C servo axis for complex picking application.

The Features of BORCHE BU Series Two-Platens Injection Molding Machine

• Super Long Lasting Tie Bar: During high pressure locking, four tie bars are under equal forcde, no unbalanced load occurred, avoiding tie bar broken theoretically.
• Moving Platen Clamping: Tie bars move across clamping cylinder, no contact with seals, less leakage risk; Module type clamping cylinder, can be assembled and diassembled together, easy for maintenance Pistons of four cylinders are controlled separately, which can adjust the locking position precisely, and assure fast and precise locking.
  Clamping cylinder assembled in the moving platen can balance the load of mold, avoiding forward tilt, improve stability of mold open and clamping movement.
• Tie Bar Guiding: Borche BU machine adopts the structure of fixing two bottom tie bars, assures platen moving guiding.
  Machine frame works as the support during platen moving, bottom tie bars work as guiding and auxiliary support.
  Above new guiding structure can guarantee mold movement stability and reliability, avoiding unbalanced force on tie bars and mold jiggling motion, and can load heavier mold.
• Innovated Injection Structure: Both carriage cylinder and injection adopt linear guides, which guarantee stable and fast movement, injection supporting made by one piece casting, is rigid and compact.
  Double carriage cylinder assures injection unit better centering and stable movement.
• Shorter Cycle Time: High performance and response controller with 12" touch screen and Intel 1.1G CPU, better applications scalability meets complicated production requirements. With special hydraulic circuit, optimized movement calculation, dry cycle time of the machine is less.
• Intelligent Interconnection: The Human-computer interface from IMM enables the Intelligent Interconnection of IMM, peripheras (cooling machine, mold temperature controller etc.) and robot. All equipments are under close loop control and all data is corresponding with each other, thus product quality is improved, and production cost is decreased.

The Dimensional Drawing of BORCHE BU3300-V Two-platens Injection Molding Machine

The selection of a robotice arm for the injection molding machine would be according to the structure of it together with the parts of which to be produced with the machine, the robotic arm chosed would be:

• With sufficient payload to install the EOAT for parts picking, the payload of SW7730DS is up to 75kg.
• With the robotic arm long enough to pick the parts from the mold center, of which the arm length of SW7730DS is 3000mm.
• With a cross wise stroke to enable the robotic arm free moving inside the mold area, of which the SW7730DS is 2250mm.
• With a traverse stroke to move the parts outside the mold area and place it on the conveyor, of which the SW7730DS is 4000mm.

Dimensional drawing of SW7730DS

Other than a standard robot, SWITEK will also provide a customization service of the robot for special injection molding project such as increase the length of the axis X, Y, and Z etc. or even make it a longitudinal robot to have the parts dropped to the end of the injection molding machine instead of the traditional operator side or non-operational side parts dropping.