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SHE258B Bakelite Injection Molding Machine

SHE258B Bakelite Injection Molding Machine

Series :Bakelite Injection Molding Machine

Brand :SANSHUN

Model :SHE258B

Applications : For making bakelite

SANSHUN Machinery is one of the top 10 Chinese injection molding machinery manufacturer. We are manufacturing different types of injection molding machines, injection blow molding machine, and Auxiliary equipment. Our machines had been exported to more than 60 countries.

Characteristics
Sanshun Machinery manufacturing special Injection molding machines for Bakelite products. Bakelite has a number of important properties. It can be molded very quickly, decreasing production time. Moldings are smooth, retain their shape and are resistant to heat, scratches, and destructive solvents. It is also resistant to electricity and prized for its low conductivity. It is not flexible. These characteristics made Bakelite particularly suitable as a molding compound. For Bakelite injection molding, the barrel temperature is set to 70-90'C to heat (with screw shear) the raw materials flowing. The screw is only for compressing and delivering the material into the mold, without melting it. Mold is heated to a temperature (180'C, for instance) to cure the raw materials
Screw configuration - The compression ratio of the screw for bakelite is 1:1 whereas for thermoplastics it's about 1:3-1:4.5
Process - Molding of thermoplastics involve melting whereas in the molding of bakelite only the fusing takes place between particles and no melting is involved.

Advantages
Specially designed Screw & Barrel, High Efficiency, Automatic Mould adjustment, Energy Saving, Easy processing operations, Less production time.

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Technical Parameters

MODEL	SHE258B
INJECTION UNIT	UNIT	A	B
Screw diameter	mm	50	52
Shot size(theoretical)	Cm³	610	660
Shot weight	g	730	790
Injection pressure	Mpa	221	204
Injection rate	g/s	171	185
Screw L/D ratio	L/D	16	15.3
Screw speed	r.p.m	0-180
Nozzle Diameter	Srmm	20
CLAMPING UNIT
Clamp tonnage	KN	2580
Toggle stroke	mm	570
Mould Thickness	mm	220-580
Space between tie-bars	mm	580x580
Ejector stroke	mm	160
Ejector tonnage	KN	70
Ejector number	Piece	9
Hole Diameter	mm	160
OTHERS
Max. pump pressure	MPa	16
Pump motor power	KW	25
Machine dimension	m	6.3X1.8X2.0
Machine weight	t	8
Oil tank capacity	L	350

Platen Dimensions

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Advantages & Features

.Specially designed screw & barrel for Bakelite, which is made by high strength bi-metallic steel with special treatment, with the characteristic of good corrosion resistance & good abrasion resistance
.Oil cooling device in the Bakelite screw & barrel ensure the precision of the temperature control
.According to Bakelite material features, the machine can exhaust while opening the mold
.It can be converted into thermoplastics injection molding machine after replacing the screw and barrel group
.Upgraded size of the hydraulic motor improves the injection rate and achieves a better plasticization
.Specially designed heat resolution plate in the mould platens to meet the Bakelite mold temperature requirements
.Two sets of mold temperature control interface, controlled by the PLC with high precision
.Using high-precision linear transducer to achieve high-precision position control. Position setting precision can reach 0.1mm
.Automatic mold adjustment function can directly input locking pressure and automatically complete mold thickness adjusting by PLC
.Double cylinder balanced injection unit
.Nitride Hardened Screw and Barrel for wear resistance and long life
.High Torque Hydraulic motor for driven plasticizing Screw Counter
.Multi-stage injection speed, refilling speed and the pressure setting
.Modular injection unit design offering a wide choice for shot weights
.Precise Screw System with optimized design
.Injection device control position
.Hopper Sliding Arrangement for material removal
.PID temperature control with a high precision electronic ruler
.Robust & Rugged 5 points toggle clamp with large mould opening stroke
.High Wear Resistance & High Strength Characters Gear Nut (Tie bar Nut) gives Rigid & Positive Clamping force
.Hard-Chrome Plated High-Tensile Steel Tie-Bars with Stress-Relieve-Design
.Low-pressure mold protection device
.Progressive Type auto grease lubrication system
.Mechanical, electrical, hydraulic triple chain security protection ( large, medium machine)
.High strength mould platen
.Anti-vibrating pads with stronger dampening
.Heavy-duty toggle design give trouble free precise clamping force for long period
.High precision suction filter
.Shaking ejector for multi-cavity mold
.Machine motor stop whiling rear gates opening
.Hydraulic tank low oil level alarming
.High-efficiency oil filter device to extend the normal life of the hydraulic oil
.High-performance and Large colour LCD display screen
.PID Temperature Controller for Accurate Control
.Abnormal errors alarm function with motor safety protection device
.Linear transducer controls Clamping, Injection, and Ejection