Product Overview
High-precision servo-hydraulic injection molding system engineered for high-volume, continuous production of industrial paint buckets and matching seals (1L to 30L capacity). Optimized for 100% virgin PP/HDPE and up to 70% recycled HDPE blends. Delivers heavy-duty packaging containers matching international chemical safety and drop-test standards.
Engineering Core
Zero-Leakage Rim Control: Proportional pressure valves control melt transition, ensuring less than 0.1mm ovality deviation on bucket rims for airtight lid sealing.
Recycled Material Armor: Bimetallic screw and barrel with tungsten carbide coating resists abrasive wear from post-consumer recycled (PCR) plastics, extending barrel lifespan by 45%.
Reinforced Lug Zones: Multi-stage injection velocity profiling increases density at the bucket handle lugs, passing international 3-meter drop tests when fully loaded.
Machine Parameters
|
ITEM |
UNIT |
SZ-5500A |
||
|
INJECTION UNIT |
||||
|
SCREW DIAMETER |
mm |
80 |
85 |
90 |
|
SCREW LID RATIO |
L/D |
22.3 |
21 |
19.8 |
|
THEORETICAL SHOT VOLUME |
CM3 |
2141 |
2418 |
2710 |
|
SHOT WEIGHT(PS) |
g |
1948 |
2200 |
2466 |
|
INJECTION PRESSURE |
Mpa |
188 |
167 |
149 |
|
THEORETICAL INJECTION RATE(PS) |
g/s |
427 |
482 |
541 |
|
PLASTICISING CAPACITY |
g/s |
80 |
100 |
118 |
|
SCREW TORQUE |
N.m |
5170 |
||
|
MAX.SCREW ROTATE SPEED |
r/min |
150 |
||
|
INJECTION STROKE |
mm |
425 |
||
|
CLAMPING UNIT |
||||
|
MAX.CLAMPING FORCE K |
KN |
5500 |
||
|
MAX.OPENING STROKE |
mm |
820 |
||
|
SPACE BETWEEN TIE BARS |
mm |
810×810 |
||
|
MOULD HEIGHT |
mm |
350-820 |
||
|
MAX.DAYLIGHT |
mm |
1640 |
||
|
EJECTOR FORCE |
KN |
150 |
||
|
EJECTOR STROKE |
mm |
210 |
||
|
EJECTOR QUANTITY |
13 |
|||
|
OTHER |
||||
|
PUMP MOTOR POWER |
KW |
55 |
||
|
PUMP PRESSURE |
Mpa |
16 |
||
|
HEATING POWER |
KW |
33 |
||
|
HEATING ZONE |
6 |
|||
|
SIZE |
m |
8.4×2.2×2.6 |
||
|
NET WEIGHT |
t |
23.5 |
||
|
OIL TANK CAPACITY |
L |
1000 |
||
|
INTERNATIONAL DESIGNATION |
5500-4040 |
|||
Manufacturing Validation and Quality Standards
Platen Parallelism: Checked via dial indicators, maintaining deviation under 0.05 mm under maximum clamping tonnage to eliminate uneven mold wear.
48-Hour Full-Load Stress Test: Continuous dry-cycle operation at maximum speed before sign-off to ensure hydraulic oil temperature stabilization below 55 degrees Celsius.
100-Cycle Injection Repeatability: Mass-flow sensors validate shot weight variance within plus or minus 0.3 percent.
Ultrasonic Weld Inspection: Applied to the heavy-duty clamping toggle and moving platens to guarantee zero internal micro-cracks.
Advanced Automation and Downstream Integration
Robot Interfacing: Pre-wired Euromap 67 and SPI protocols for quick integration with 3-axis or 5-axis servo take-out robots.
IML (In-Mold Labeling) Ready: High-precision signal synchronization allows direct interface with external IML systems for premium paint bucket decoration.
Downstream Compatibility: Integrated control loops for synchronizing with automatic leak testers, handle-assembling stations, and robotic palletizers.
Configuration Options
Base Screw and Barrel: Nitrided Alloy Steel (38CrMoAlA)
Premium Screw Upgrade: Bimetallic Tungsten Carbide (For High-ratio Recycled / PCR processing)
Drive System Options: High-Response Servo Hydraulic OR All-Electric Injection Unit (For ultra-fast cycle times under 15s)
Electricals: Schneider and Omron Components (Standard) OR Siemens PLC and 15-inch HMI (Premium upgrade)
Voltage Standards: 380V/50Hz/3P Standard. Customizable to 220V, 415V, or 460V (60Hz) for global grid compatibility (US, Mexico, KSA).
Packaging and Global Logistics
Anti-Corrosion: All bare metal surfaces treated with heavy-duty rust preventive oil before vacuum wrapping.
Sea-Freight Packing: Secured on heavy steel skids inside export-grade, fumigated wooden crates.
Modular Loading: Disassembled components marked for standard 40ft HQ container loading to minimize ocean freight costs.
After-sales service
We provide free accessories to keep the machine running without any problems
Company Profile
Buyer evaluation
We are 20 years manufacturer of the injection molding machine in China, more than 1500 customers all over the world.
Packaging & Shipping
Certifications
FAQ
Q: How does the machine ensure a 100% leak-proof seal between the bucket rim and the lid?
A: Leakage is caused by platen deflection and shifting clamp pressure. Our machines utilize a rigid five-point double-toggle clamp design and proportional closed-loop pressure control. This maintains platen parallelism within ≤0.05mm, ensuring perfectly round bucket rims (ovality deviation under 0.1mm) for a precise snap-fit with the lid.
Q: Can this system handle high ratios of Recycled HDPE (PCR) without damaging the screw?
A: Yes. For recycled materials, we equip the machine with a bimetallic screw and barrel infused with a tungsten carbide alloy layer (0.3mm thickness). This prevents abrasion from impurities, maintaining stable melt viscosity and extending component life under high-ratio (up to 70%) PCR processing.
Q: What is the actual cycle time for a standard 20L paint bucket?
A: For a standard 20L bucket (approx. 900g weight, PP material), the production cycle is 28 to 34 seconds. This is achieved using our high-response servo-hydraulic system combined with a dual-circuit independent mold cooling manifold. Note: Actual times vary slightly based on your mold's cooling channel layout.
Q: Can we produce the bucket and the lid simultaneously on the same machine?
A: Yes. For buckets under 5L, we support family molds (1 bucket + 1 lid per cycle) within our 400T–550T range. For larger buckets (10L–30L), we recommend separate dedicated machines or sequential runs to ensure balanced injection pressure and optimized cooling for each component.
Q: What automation interfaces are pre-installed for European/North American factory integration?
A: All machines come standard with Euromap 67 robotic interfaces, SPI communication protocols, and integrated signal lines for automated take-out robots, in-mold labeling (IML) systems, and down-stream automatic lid-pressing conveyors.
Q: What is your quality verification process before global shipment?
A: Every machine undergoes a rigorous 48-hour continuous full-load dry-run test, a 100-cycle continuous injection repeatability inspection, and ultrasonic hydraulic pressure stabilization checks. We welcome third-party factory audits (SGS, TÜV) or live-video mold trials with your tooling prior to dispatch.
|
ITEM |
UNIT |
SZ-1300A |
||
|
INJECTION UNIT |
||||
|
SCREW DIAMETER |
mm |
35 |
40 |
45 |
|
SCREW LID RATIO |
L/D |
24 |
21 |
18.7 |
|
THEORETICAL SHOT VOLUME |
CM3 |
173 |
226 |
286 |
|
SHOT WEIGHT(PS) |
g |
158 |
206 |
260 |
|
INJECTION PRESSURE |
Mpa |
235 |
180 |
142 |
|
THEORETICAL INJECTION RATE(PS) |
g/s |
110 |
143 |
181 |
|
PLASTICISING CAPACITY |
g/s |
13.8 |
19.7 |
27.1 |
|
SCREW TORQUE |
N.m |
740 |
||
|
MAX.SCREW ROTATE SPEED |
r/min |
250 |
||
|
INJECTION STROKE |
mm |
180 |
||
|
CLAMPING UNIT |
||||
|
MAX.CLAMPING FORCE K |
KN |
1300 |
||
|
MAX.OPENING STROKE |
mm |
400 |
||
|
SPACE BETWEEN TIE BARS |
mm |
420×420 |
||
|
MOULD HEIGHT |
mm |
160-440 |
||
|
MAX.DAYLIGHT |
mm |
840 |
||
|
EJECTOR FORCE |
KN |
31.4 |
||
|
EJECTOR STROKE |
mm |
100 |
||
|
EJECTOR QUANTITY |
5 |
|||
|
OTHER |
||||
|
PUMP MOTOR POWER |
KW |
13 |
||
|
PUMP PRESSURE |
Mpa |
16 |
||
|
HEATING POWER |
KW |
9.2 |
||
|
HEATING ZONE |
4 |
|||
|
SIZE |
m |
4.7×1.25×1.85 |
||
|
NET WEIGHT |
t |
4.3 |
||
|
OIL TANK CAPACITY |
L |
360 |
||
|
INTERNATIONAL DESIGNATION |
1300-410 |
|||
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