4 cavity cap mold

“The new breakthough”of hydraulic injection molding machine has achieved “pressure closed-loop control”,supply and demand of energy matching and lead the future development trend.
they are the same.
Supply and demand of energy matching:power system should provide the amount of energy when the injection molding machine needs in order to avoid much energy loss.

4 cavity cap mold
8 cavity cap mold
12 cavity cap mold
16 cavity cap mold
24 cavity cap mold
32 cavity cap mold
48 cavity cap mold
cold runner cap mold
hot runner cap mold

Super energy saving

campared with variable pump system,it can save 40% of the power.compared with constant flow pump and speed setter

it can save 60% of the power(the different kinds of products has diffient energy saving effects)

High precision high response

The pressure sensor and rotary encoder with high precision and high sensitivity achieve pressure,flow closed-loop control,allows the repeat precision error to be less than 1%. when servo motor reaches big quantity,the output power just needs 0.05 seconds

Low noise
The noise is below 78db,servo motor has almost no noise during no operation
Save the cooling water
No constant flow pump and speed set motor overflow heating,when the temperature of hydraulic oil is lower,the cooling water is reduced greatly.

4 8 cavity flip top cap mould

SCREW-BAR DRIVEN BY HIGH TORQUE HYDRAULIC MOTOR SCREW-BAR WITH NON-STEP SPEED VARIABLE AND DURABILITY FEATURES

-Double-guide pole,double cylinder balancing injection system
-Screw pre-plasticizing device with high torque motor driving screw-bar
-Charging barrel temperature is controlled by computer PID
-Storage back pressure adjustable system
-Micro adjustment device for nozzle center aiming
-Multi-level injection,pressure-keeping,speed,location control Protection function of screw cold start-up
-Injection positioning scale control
-Anti-skid aluminum patterns cover

CLAMPING PART
HZT standard series 65T-2000T:

Internal-rolling type five point toggle clamping structure,through finite-element analysis strengthened mold board,enhance the rigidity and precision of clamping unit greatly

Integral casting hydraulic supporting device of movable mold board reduce friction on pulling bar greatly

Automatic mould adjustment,when the replacement of different mould,realization the automatic adjustment of clamping by the parameters setting

-Ramp-row five support-point double crank web structure,mold board designed by the computer parameters optimizing
-Mechanism,electronic& hydraulic triple interlock safety protection function
-Sensitive low-voltage mold protection device
-Multiple stages control for mold opening and clamping pressure,speed,positioning
-Hdraulic motor-driving gear mold adjustment
-special technique treatment,reliable strengh
-Automatic centralized lubrication system
-Mold open and clamping,liftout position control
-Automatic mould adjustment function
-Robotic pincher mechanical installation positioning interface
-Core pulling and inserting system is suitable for the complicate structure mould
HYDRAULIC PART

cold runner cap mould
hot runner cap mould
8 cavity flip top cap mould
4 cavity preform mold
8 cavity preform mold
12 cavity preformmold
16 cavity preform mold
24 cavity preform mold
32 cavity preform mold
48 cavity preform mold

HYDRAULIC UNIT CONSIST OF WORLD FAMOUS BRANDS OIL PUMP AND CONTROL VALVES WITH MORE OUTSTANDING PERFORMANCE OF PRESSURE SUPPORTING ENSURE EFFECTIVELY THE MACHINE ACCURACY,RELIABILITY,STABILITY,AND DURABILITY AND LOW NOISE ENVIRONMENTAL FEATURES

*The manual plug valve hydraulic system make the machine having quick and smooth motion response
*Double proportional valve control pressure and flow
*Hydraulic oil cooling device
*High-performance imported hydraulic unit with optimizing allocation
*The fule tank has a big opening hole so can be cleanesed easily

4 8 12 cavity cap mould

Weld Line/ Material Flow Line-Injection Mould Defect Analysis

1, Appearance

Weld line often appears in the place which every fluid meet. Especially in the high-polished surface in mould, weld line in the plastic product just like a mark or slot, it is obviously in the plastic products with dark color or transparent plastic products. Weld line’s location is always depending on the material flow direction.

2, Physical reason

The location of weld line is where melt material separate but connect again area. It will form weld line and material flow line in the place two melt material meet again. The bigger core around melt material is, the more obvious the melt line will be. But the small weld line will not affect products quality and strength.

However, if the flow distance is too long or the pressure is not high enough, inadequate filling will lead to a slot. The quantity of gate and the location of gate also determine the weld line’s quantity and location. The smaller fluid -striker angle is, the more obvious the weld line will be.

4 cavity cap mould
8 cavity cap mould
12 cavity cap mould
16 cavity cap mould
24 cavity cap mould
32 cavity cap mould
48 cavity cap mould

In most circumstance, technology debugging cannot solve weld line or material flow line. We can reduce their brightness, or move them to invisible or inconspicuous place.

3, Reasons connecting to the machining parameter and improvement

4 8 12 16 24 32 48 cavity preform mould

Hole design for plastics includs though holes, blind holes, screwed holes, and irregular shaped holes. In principle, holes should be as simple as possible, A complex hole increase the difficulty of mold making; as shown in Table 1-4, a sufficient gap should be reserved between holes and the wall. The diameter of a hole also relates to its depth as shown in Table 1-5. When the distance between two holes or from the edge is smaller than the one specified in Table 1-4, please refer to the pattern design shown in Fig. 1-9.

Table 1-4 Hole’s pitch, space to wall and diameter of thermoset plastics

Hole diameter/mm <1.5 1.5~3 3~6 6~10 10~18 18~30
Holes’ pitch, space to wall/mm 1~1.5 1.5~2 2~3 3~4 4~5 5~7

Table 1-5 Relations of hole’s diameters and depths

Molding types Hole depth
Though hole Blind hole
Compression molding Horizontal hole 2.5d <1.5d
Vertical hole 5d <2.5d
Extrusion or injection molding 10d (4~5)d

4 cavity preform mould
8 cavity preform mould
12 cavity preform mould
16 cavity preform mould
24 cavity preform mould
32 cavity preform mould
48 cavity preform mould

The holes design for plastic products as well as other holes under stress should be reinforced with a convex edge designed thereon, as indicated in Fig. 1-10. The fixing hole can be designed in the form of a screw hole with sinking head as illustrated in Fig. 1-19left, whereas that in Fig. 1-19 center is generally not recommended. The form as shown in Fig.1-19 right

rotary bottle mould

Six and seven layers extrusion blow molding machine HZU-M-120,HZU-M-280

The extrusion system of six to seven layers co-extrusion blow molding machine consists of 6-7 sets of extrusion and composition, machine parts and screws adopt high quality nitride alloy steel, have high surface hardness, long service life and good quality of plasticizing, which is suitable for processing high molecular weight polyethylene. The pressure sets on the extrusion system can make sure the stability of material base of the continuous co-extruding die. Ensuring six or seven layers of resin completely melt, and using the latest international composite superimposed multilayer flow design, make the flow smooth and has no dead angle, the material and color piece can be changed, the material base is of good quality.

Advantages of automatic extrusion blow molding machine:

rotary bottle mould
full automatically blowing bottle mould
full automatically blowing bottle mold
shut-off nozzle preform mould
shut-off nozzle preform mold

In the auto industry, plastic seat box has the advantage that the metal fuel tank can’t take place.Plastic fuel tank is with high safety, against the impact, corrosion, explosion, which the metal fuel tank can’t be compared to. The plastic fuel tank is 30%-50% lighter than that of the same specification. The machine processes HMWHDPE as the grass roots. EVoH is such plastic fuel tank with versatile layer,high barrer, complex shape which is six-seven layer, can produce varies hollow products requested as high barrier .

Advanced processing equipment:

Introducing advanced technology form Germany,Italy,Japan etc.

Involving advanced design and production of super large-scale blow-molding machine and engineering management capability.

Holding over 40 items Patent Technologies.

After sales service:

With good brand reputation and attitude of customer-centric, we invite special technologists responsible for after sales.

Service hotline is 24-hour on call.

Fast response: domestic call is handled within 12 hours.

International call is handled within 20 hours.

5 gallon preform mould

* Injection unit
1. Special screw L/D ratio for PET prefrom molding.
2. Nitrided screw & barrel ensure lasting service life.
3. Screw made by CNC thread grinder achieves powerful plasticizing capacity and homogeneous mixing.
4 High precision pressure gauges indicate injection pressure timely.
5. Adjustable pressure and flow proportional valve increase reliability and sensitivity.
6. High quality linear potentiometer for screw stroke control
7. Balanced double cylinder injection system ensures smooth movement.
8. Easily adjustable multi-step injection pressure and speed of injection & hold pressure.
9. Injection screw driven directly by a high hydraulic motor
injection molding machines, plastic molding, plastic machine, Injection molder, plastic injector

5 gallon preform mould
5 gallon preform mold
cosmetic mould
hot filling bottle mould
hot filling bottle mold

* Clamping unit
1. Computer optimized international standard toggle mechanism.
2. Platen and toggle in accuracy machined by CNC machine with large open stroke design, smooth and reliable movement.
3. Automatic tools-height adjustment by hydraulic motor through a planetary gears system ensures fast and constant settings.
4. Four high tensile strength tie-bars produced by CNC lathe and matched with anti-friction bushes to ensure the long service life.
5. Low-pressure mold protection.
6. Multi-eject functions with adjustable pressure, speed, position and delay time fit for various molding conditions.
7. Linear potentiometer for clamping and ejection position control.
8. Adjustable multi-stage speed for mold open and close.

* Control unit
1. Adopting Micro-processor Controller with large LCD display..
2. Alarm display indicates error during operation.
3. Screen display in numerous languages.
4. Clamping, injection and ejection are controlled by high precision linear transducer.
5. High capacity memory to store more than 60 sets of all molding parameters.
6. Self Locking function to protect the data from unauthorized modification.
7. Manual, semi-auto, auto mode available

PE (polyethylene) materials, plastic molding process

The commonest plastic that can be found in daily life is polyethylene (PE) which is polymerized from ethylene industrially fractionated from petroleum.

Polymerized of low density added with a small quantity of oxygen is heated to 200℃ under a high pressure of approximately 2000 air pressure, white wax like PE can there be obtained, and the method is called high pressure ethylene PE. With special organic metal catalyzer, the ethylene can be polymerized under normal temperature into PE is generally a milk white, translucent or opaque substance which is higher than water and can fall drop by drop like olefin when being burnt. It has sound water resistance, electric insulation, acid and alkali resistance. The substance can dissolve in hot toluene yet is quite stable against most chemicals and therefore it can be easily molded. The melt index indicates the fusion viscosity of polyethylene; the smaller the index is, the large the molecular weight and the higher the mechanical strength, although the fluidity is lower.

gate preform mould
gate preform mold
general preform mould
general preform mold

The low heart resistance and the inactive chemical property of PE result in bad printing and bonding.

PE can be used to manufacture all kinds of bottles, fishnet, ropes, cables, telephone wire stringing, chopping boards as well as dustbins etc.