Timberline Machinery Inc.
7 Pittsburgh Ave                           Nashua, New Hampshire 03062, USA
Phone (603) 889-7233         Fax (603) 889-7300        Call Ed Makepeace

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Bekum 121 CoEx Blow Molder! Like New! From Lab!

Ref #

Manufacturer

Model

Year

Extrusion Screw Diameter

Head Configuration

Comments

30060 

Bekum 

121 

1989 

60 

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!


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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.

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