Plastic Crate Collapsible Making Injection Molding Machine
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Plastic Crate Collapsible Making Injection Molding Machine

Plastic Crate Collapsible Making Injection Molding Machine

This specialized high-tonnage injection molding machine is engineered specifically for manufacturing heavy-duty, foldable (collapsible) plastic crates used in agriculture, logistics, and retail.
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Description

Product Overview

 

This specialized high-tonnage injection molding machine is engineered specifically for manufacturing heavy-duty, foldable (collapsible) plastic crates used in agriculture, logistics, and retail. It features an optimized screw design and clamping mechanism to handle complex integrated hinges, thin-wall rib structures, and snap-lock systems without warping or flashing.

 

Core Advantages

 

Flawless Hinge Formation: Multi-stage injection speed and closed-loop pressure control prevent stress concentration, ensuring the integrated hinges withstand 10,000+ folding cycles.


Platen Rigidity & Mold Protection: Reinforced, high-rigidity platens with low-pressure mold protection prevent mold deformation and extend expensive collapsible mold lifespan.


High-Flow Plasticizing: Customized screw geometry guarantees 120–300 kg/h plasticizing capacity, optimizing the filling of thin-walled structural ribs using either 100% virgin or recycled HDPE/PP.


Fast Cycle Times: Optimized hydraulic circuit and high-flow valves achieve a 45 to 120-second cycle time (design-dependent), maximizing daily ROI.

 

Global Supply Chain & Component Standards

 

To ensure global maintenance compatibility and 24/7 production reliability, we utilize world-class components:


Control System: KEBA (Austria) / Gefran (Italy) dedicated injection PLC.


Hydraulic Valves: Yuken (Japan) / Rexroth (Germany) proportional valves.


Servo Drive: Phase (Italy) / Innovance servo system.


Sealing Elements: NOK (Japan) hydraulic seals to ensure zero leakage under continuous high pressure.

 

Quality Assurance & Testing Protocols

 

Every machine undergoes strict industrial verification before dispatch:


72-Hour Continuous Dry Run: Mechanical and hydraulic stability test.


Full-Load Shot Verification: Testing structural stability at maximum injection weight and pressure.


Platen Parallelism Check: Measured via dial indicators to ensure parallelism within ≤ 0.05mm under full clamping force.


CE & ISO9001 Compliance: Full documentation provided for European and American customs/factory audits.

 

Optional Automation Modules

High-speed 3-axis/5-axis servo robot for automatic crate demolding.

Integrated In-Mold Labeling (IML) system for logistics barcodes.

Post-molding automated folding, stacking, and palletizing line.

IoT remote diagnostics module for real-time OEE tracking.

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

 

202207191532579f5fdd6292c64cd4b95d709ecddd6525

2

Machine configuration

 

3(001)

 

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.

 

5(001)

Packaging & Shipping-Certifications-

FAQ

 

Q: Why does a collapsible crate require a higher-tonnage machine than a standard solid crate of the same volume?

A: Collapsible crates are molded as flat panels with extensive rib networks and integrated thin-wall hinge structures. This flat, large surface area creates a significantly higher projected area, requiring immense clamping force (500T-1000T) to prevent mold deflection and parting-line flash.

Q: How does the machine prevent the integrated hinges from becoming brittle or cracking during folding?

A: Hinge failure is usually caused by internal stress. Our machine utilizes highly precise multi-stage injection speed and closed-loop packing pressure control. This ensures high speed when filling the thin hinge zone to maintain melt temperature, followed by micro-controlled pressure to avoid over-packing, resulting in optimal molecular alignment and high fatigue resistance.

Q: Can your machine handle 100% recycled HDPE/PP materials for cost reduction?

A: Yes. The screw is engineered with a high flight-depth ratio and an optional bimetallic barrel, providing excellent mixing and wear resistance for recycled regrinds. For logistics crates, we recommend a maximum of 70% high-quality regrind mixed with 30% virgin material to maintain impact strength, which our control system stabilizes via adaptive pressure adjustment.

Q: How does the machine protect our expensive collapsible molds from damage?

A: We integrate a low-pressure mold protection system with high-response sensors. If a dropped part or foreign object (even as thin as a single plastic scrap) is detected during mold closing, the clamping action instantly stops within milliseconds, triggers an alarm, and opens the platen to prevent costly mold damage.

Q: What is the average lifespan of this injection molding machine under 3-shift continuous operation?

A: With standard preventative maintenance (oil filtering, toggle lubrication), the heavy-duty mechanical frame and platen have a design life of 10–15 years. Core electronics and hydraulic seals generally require routine replacement cycles every 5–7 years, backed by our global spare parts availability.

Q: Can this machine accommodate molds from different toolmakers?

A: Yes. The platen EUROMAP / SPI hole patterns can be fully customized to match your existing mold drawings. The hydraulic core-pulling sequences and ejector strokes are fully programmable via the KEBA controller to match varied mold mechanical actions.

Q: What is the lead time, and how is the massive machine shipped to our factory?

A: Standard manufacturing and testing time is 35 to 60 working days. For shipping, the machine is modularly disassembled: the injection unit, clamping unit, and power pack are separated, treated with anti-corrosion coating, secured onto heavy-duty steel skids, and loaded into standard 40FR (Flat Rack) or 40HQ containers.

Q: How do you handle installation and after-sales support for international buyers?

A: We provide a comprehensive service package: complete foundation layout drawings before delivery, standard English operation manuals, and video step-by-step guides. For commissioning, we can dispatch overseas field engineers for on-site installation and staff training, complemented by 24/7 remote IoT diagnostics to troubleshoot software or parameter issues instantly.

 

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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