|7 Pittsburgh Ave Nashua, New Hampshire 03062, USA|
|Phone (603) 889-7233 Fax (603) 889-7300 Call Ed Makepeace|
Close This Window
Extrusion Screw Diameter
Single - 3 layer
Co-extrusion, 3 layer, LIKE NEW - FROM LAB!
JUST PURCHASED! 1989 BEKUM H121S 3-LAYER COEXTRUSION BLOWMOLDER! USED IN LAB! IMMACULATE - LIKE NEW CONDITION!! USED BEKUM MODEL H121S SINGLE SIDED BLOW MOLDER PRESS WITH CO-EXTRUSION CAPABILITY. SYSTEM INCLUDES (2) 60 MM EXTRUDERS, 24/1 L/D WITH MULTI SPEED GEARBOX FOR PVC EXTRUSION CAPABILITY. (1) 38 MM 24/1 L/D EXTRUDER WITH MULTI SPEED GEARBOX FOR PVC EXTRUSION CAPABILITY. EACH OF THE EXTRUDERS EQUIPPED WITH BI-METALLIC BARRELS WITH X101 LINERS (INSTEAD OF NITRIDED BARREL) FOR OPERATING TEMPERATURES UP TO 750 DEGREES F. SYSTEM INCLUDES MODEL BKSCV-55 3-LAYER CO-EX HEAD DESIGNED FOR OPERATING TEMPERATURES UP TO 750 DEGREES F. OR SINGLE PARISON HEAD FOR PVC and HDPE, TYPE BKD51 WITH MAXIMUM 47 MM DIE DIAMETER. INCLUDES HUNKAR MODEL DAT SPC MACHINE MONITORING SYSTEM, IBM PC COMPATIBLE SOFTWARE PACKAGE FOR DAT SPC MONITORED DATA POINTS, AND MACO 8000 MICROPROCESSORS SEQUENCE CONTROLLER FOR PARISON PROFILE DISPLAY ETC., INCLUDING TOUCH SCREEN CONTROL. MACHINE EQUIPPED WITH HOT CUT DEVICE, ELECTRO-HYDRAULIC CONTROL FOR MOLD PRE-CLOSING AND REPEATED BLOW PIN MOVEMENT, STERLCO HIGH TEMPERATURE UNIT MODEL F2016 FOR HEATING/COOLING OF EXTRUDER BARRELS FOR TEMPERATURES UP TO 650 DEGREES F., AND 45 KVA AUTO TRANSFORMER. NEW 1989 AND UTILIZED IN LAB USE ONLY. REPLACEMENT COST $650,000 USD! ----------- EXPANDED SPECIFICATION DETAILS: CLAMP: * H-121S, single-sided blow molding press with mold close delay, extruder height adjustment, visual and audible mold system for top blowing of up to two(2) parisons with 3-step sequence, safety gate system with electric/hydraulic/pneumatic interlocks, and electro-pneumatic controls for automatic detabbing. PRIMARY EXTRUDER: * Type S633S, 60mm, 24:1 L/D smooth barrel extruder, complete with 40HP Reliance DC drive motor, 460/3/60, and five(5) heating zones. * One(1) 60mm, 24:1 L/D feedscrew for Hytrel. * Electro-magnetic valves for barrel cooling. 4 zones. * Manually actuated pneumatic blocking device with twin hopper for purging. CONTROL PANEL: * Barber Colman Maco 8000 microprocessor machine sequence controller with integrated single channel parison programming station, parison profile display, ten(10) integrated temperature controllers, SCR DC drive controls, and AC/DC power panel. Including air conditioner and high temperature controls of up to 750 degrees F. EXTRUSION HEADS AND PARISON CUTTING DEVICES: * Single-parison head for HDPE, type BKD51, with a maximum die diameter of 47mm. Three(3) heating zones. * One(1) parison programming adaptor for single channel programming. * Single channel 6" programming cylinder kit with Hunkar servo valve. * Basic equipment for hot cutting (electrical equipment). * One(1) hot cut device. Hot cut basic equipment required. PARISON PROGRAMMING:: * Separate electro-hydraulic parison programming power pack unit for single and multi-channel parison programming. ACCESSORIES: * Electro-hydraulic control for mold pre-closing and repeated blow pin movement. Single-sided. * Sterlco oil cooling unit for mold cooling. Complete with hoses and fittings to platen manifold and 5 gallon of oil. * Temperature indicator (Doric) for melt temperature measuring. * Pressure indicator (Dynisco) for melt pressure measuring. * Electro-pneumatic control for pre-blowing with reduced blowing air. Single-sided. Additional equipment: * One(1) 60mm, 24:1 L/D PVC feedscrew. * One(1) 60mm, 24:1 L/D HDPE feedscrew with mixing tip. * One(1) set of PVC conversion parts for the BKD51 extrusion head. Including one(1) 60mm extruder adaptor and one(1) integrated pin-holder with three(3) legged spider. * Extended die diameter from 47 to 60mm for the BKD51 head. * Origa linear cold knife. * 45 KVA auto transformer. 460V-230V, 3-phase, 60hz, and NEMA 1 enclosure. MOLD AND TOOLING: * One(1) single cavity blow mold for the production of a similar Hytrel part as currently produced on a Bekum. Including one (1) set of head tooling and one(1) blow pin. EXTRUDERS: * Two(2) 60mm, 24:1 L/D, bi-metallic barrel with x101 liner's (instead of nitrided barrel) for operating temperatures of up to 750 degrees F. Extruder barrels are to be equipped with one(1) rupture disc- in each compression zone. * One(1) 38mm, 24:1 L/D, bi-metallic extruder barrel with x101 liner (instead of nitrided barrel) for operating temperatures of up to 750 degrees F. Extruder barrel is to be equipped with one(1) rupture disc- in the compression zone. * Hytrel feedscrews, 15-5 steel, hard faced with Stellite 12, for operating temperatures up to 750 degrees F. * 2 x 60mm, 24:1 L/D * 1 x 38mm, 24:1 L/D * Two(2) sets of Aluminum cast heater bands with high temperature tubing and hoses for the 60mm, 24:1 L/D extruder barrel. Instead of mica heater bands and coiled barrel cooling. Thermocouples are to have special leads for operating temperatures of up to 750 degrees F. * One(1) set of Aluminum cast heater bands with high temperature tubing and hoses for the 38mm, 24:1 L/D extruder barrels. Instead of mica heaters and fan cooling. Thermocouples are to have special leads for operating temperatures of up to 750 degrees F. * Two(2) special electrically actuated valve packages for the 60mm, 24:1 L/D extruder's for barrel cooling control with manifold for operating temperatures of up to 650 degrees F. * One(1) special electrically actuated valve package for the 38mm, 24:1 L/D extruder for barrel cooling control with manifold for operating temperatures of up to 650 degrees F. HEADS: Your choice of heads: * BKSCV-55, 3-layer co-extrusion head designed for operating temperatures of up to 750 degrees F. * or BKD51 extrusion head designed for operating temperatures of up to 570 degrees F. * Three(3) Dynisco melt pressure indicators and three(3) Doric digital melt temperature indicators mounted into control cabinet. * Units are suitable for computer hook-up via RS-232 interface. * Breaker plates for the BKD and BKCSV55-3 heads mounted between the extrusion head adapters and extruders. --------------------------------------------- BEKUM H-121 SPECIFICATIONS: (single station shuttle clamp) * 1, 2, 3, 4 cavity molds * Maximum part dimensions (a Bekum 121 can produce bottles up to 5 liters. The actual part dimensions will be determined by the specific part design) 375mm maximum bottle length 200mm maximum bottle diameter * Maximum usable mold area (HxV inches) 13.4 x 18.7 * Clamp force 7.8 tons * Maximum open daylight 18.9 inches * dry cycle time: sec. 1.7 * max. number of cycles per minute: 26 * operating pressure, pneumatic: bar(psi) 8-10(100-125) * hydraulic pump motor rating: 11.2kW, 15HP PRIMARY EXTRUDERS (2) 60mm, 40HP, 24:1: * smooth barrel, type/ratio: S831S, 24:1 L/D * screw diameter: 60mm * screw speed range: HDPE 0-98 rpm, PVC 0-62 rpm * screw power requirement: 30kW, 40HP * maximum output: HDPE 75kg/hr (165lb/hr); PVC 63kg/hr (140lb/hr) ELECTRICAL, AIR, AND COOLING WATER CONSUMPTION DATA: * heating capacity extruder: 16.3kW * connected load of complete unit, max. possible (smooth barrel): 73.5kW * hydraulic tank cooling, max.: 15300kJ/hr (14500BTU/hr) * compressed air requirement (intake), max.: 2400NL/min (85scfm) * NOTE: Actual air, cooling water and power consumption are approximate and will vary with bottle type(s) and production set-up. Actual consumption approximately 60% of the maximums listed. 12000BTU/HR.= 1ton refrigeration --------------------------------------------- GENERAL INFORMATION: * Bekum continuous extrusion blow molding machines are amongst the most successful designs available, having sold more than 3500 high capacity blow molding machines throughout the world. This is convincing proof of the confidence placed by leading plastics processors in Bekum equipment. This confidence is based on the performance and reliability which characterize Bekum blow molding machines. Bekum have consistently improved their range of high capacity automatic blow molding machines, whilst maintaining the successful basic design features. This puts at your disposal blow molding systems that allow you to meet all requirements of a constantly changing market. * Up to 4 parisons can be fed from up to 5 extruders. * OPERATING PRINCIPLE OF BEKUM HIGH CAPACITY BLOW MOLDING MACHINES: * The plastic raw material is fed through a hopper to the extruder where it is plasticized and continuously extruded through a single or multiple diehead into one or more parisons. The parison length depends on the shape and size of the molding being produced. The parison length is controlled by adjusting the speed of the extruder screw. * The mold closing unit which hold the molds moves along an inclined track under the extrusion head where the mold closes around the parison. The parison is cut off between extrusion head and mold and is securely welded by the bottom of the mold. The mold then moves down to its blowing station where the blow pin (or blow pins in the case of multi-cavity molds) advances into the parison, inflating it to produce there hollow molding and accurately calibrating the neck shape. The finished moldings drop out (or optionally can be removed by one of various systems for aligned take-off). * Bekum high capacity blow molding machines consists of two main assemblies forming one complete unit: the extruder and the automatic blow molding unit with their electrical, electronic, hydraulic and pneumatic control systems. The blow molding unit forms the front part of the machine, and the mold closing system being carried in a separate welded steel frame. * Depending on the size, shape and material of the molding produced, each mold can have one, two, three, or four cavities producing from 1 to 4 finished moldings per machine cycle on a single sided machine. The calibrating stations can also be changed over simply and quickly to suit the different mold cavity combinations. BEKUM ADVANTAGES: * Versatile production with a high production and repetition rate. * Complete flash separation and removal. This eliminates subsequent finishing operations. * Rapid resetting for different products because of easy access to all essential components. * Reliability and efficiency owing to hydraulic drive system for mold carriage movement, clamping and calibrating system and special equipment. * Increased production rate and reduced material cost through use of the electronic parison programming system. * Positive control of all machine functions is ensured by the well laid out and clearly marked controls and instruments. * Wide range of technical features offers fully automatic production even of products with a complex geometry. * Long machine life due to rugged construction, using proven components and high-grade materials. * Minimum maintenance requirements. * Variable mold closing delay (inching) as standard equipment. * World-wide Bekum service. * Coextrusion and Bi-Extrusion possible with additional extruders and special heads. EXTRUDER: * EFFICIENT PLASTIFICATION IS ESSENTIAL FOR HIGH PRODUCT QUALITY. * Bekum extruders are capable of handling all known thermoplastic materials. All components of these extruders are easily accessible for inspection and maintenance. * The extruder barrels are electrically heated by resistance heater bands. Precision control units ensure that the correct processing temperature is maintained. * The machines are supplied with extruder lengths of 20D and 24D as standard. These are available either as PE screws up to 120mm or PVC screws up to 90mm depending on the properties of materials being processed. PVC screws include internal cooling of the screw tip area. * An efficient and closely controlled barrel cooling system ensures that even thermally sensitive materials, such as rigid PVC, can be processed. * Alternative cooling systems are available: * a) direct barrel cooling through a pressed-in coiled copper tube for oil or air cooling. * b) indirect cooling by fans coupled with the barrel heater bands - this method is preferred for PVC processing with screw diameters of up to 60mm and for PE processing with screw of 80mm and more. EXTRUSION HEADS: * Single or multiple extrusion heads are available for twin or multiple parison production. Different types of extrusion heads are available, depending on the rheologic values of the resin, which guarantee optimum parison quality. The different head sizes lead to best results. HYDRAULIC DRIVE SYSTEM: ECONOMICAL AND RELIABLE. * Mold opening and closing, carriage movements, calibration, automatic parison wall thickness control and a variety of ancillaries are controlled by hydraulic drives. Due to its high efficiency this type of drive is very economical and extremely dependable. The high wear resistance of hydraulic drive components minimizes maintenance requirements. Long service life and little need for spares are added advantages. * The clamp has a hydraulically operated toggle system which offers high clamping pressure and fast movements at low power consumption. Quick mold changes are made possible without need for resetting. As the toggle levers are never fully extended, the clamping pressure cannot increase to uncontrollable levels. * The complete hydraulic control system- incl. any options - is contained in a tank - in the extruder base. The tank offers complete safety against oil leakage. A directional control block houses all oil ducts for controlling the various machine movements. The corresponding control valves are mounted direct on the directional control block. The connections between hydraulic tank and cylinders are made by high pressure hoses. A switchable pressure guage checks the various hydraulic pressures. * A temperature controller on the heat exchanger controls the flow of water and assures a constant operating temperature of the hydraulic oil. * The accumulator of the hydraulic power pack includes a pressure relief and shutoff valve block. PNEUMATIC SYSTEM * In addition to blowing, the following operations are pneumatically controlled: Parison cutting and optional equipment, such as in-mold cutting or systems for neck and bottom flash trimming. All pneumatic control valves are neatly arranged on directional control blocks on the frame of the blow molding machine. The blowing and operating pressures can be preset on pressure control valves and are indicated on pressure guages. ELECTRICAL EQUIPMENT * The electrical equipment is housed in a separate control cabinet. All switches and indicating lamps required to operate the machine are located on a swivel-mounted control panel at the machine. The control panel contains the electrical equipment for the extruder drive, the heater controls, the programmer, and all controls for the various machine movements. AUTOMATIC PARISON PROGRAMMING HELPS TO SAVE COSTS. * By adding a parison thickness control it is possible to program the wall thickness of the extruded parison and to determine the distribution of material throughout the product. This improves the quality of the molding whilst at the same time saving material because the material is distributed exactly where it is needed to combine maximum strength with minimum weight. And a smaller volume of material, in addition to saving costs, also reduces the cooling time and consequently increases productivity. The parison thickness control operates electrically.
----------------------------------- NOTE: Although machinery descriptions are believed to be accurate and are from sources deemed reliable, they are not guaranteed and we invite your inspection prior to purchase.
We are one of the largest stocking dealers of plastics molding machinery in the United States, and have been selling plastics machinery worldwide for over 35 years. Our inventory is constantly changing, and we are often liquidating complete plants. Please keep in contact with us so that we can keep you informed of our latest purchases.
Close This Window