Fully Automatic Silicone Seal Ring Lunch Box Assembly Machine

Fully Automatic Silicone Seal Ring Lunch Box Assembly Machine ES-138

The  Silicone Seal Ring Lunch Box Assembly Machine delivers full automatic assembling silicone gasket into square  and round lunch box lids of  less than 6s cycle time, single-operator operation and wide size compatibility for food container manufacturers.

For plastic food container factories struggling with slow manual silicone seal ring installation on lunch box lids, inconsistent quality and rising labor costs, our upgraded Silicone Seal Ring Lunch Box Assembly Machine provides a complete integrated automation solution. It directly connects to injection molding conveyors, fully automating silicone gasket feeding, expanding, precision press-fitting, lid tab folding and finished lid discharge, greatly cutting labor reliance while enabling stable high-volume production for square plastic lunch box covers.

Old version machine Of ES-138 before upgrading -Youtube video performance

Core Advantages of Our Silicone Seal Ring Lunch Box Assembly Machine

 

1,Ultra-Fast Cycle Speed & Minimal Labor Demand

Our Silicone Seal Ring Lunch Box Assembly Machine reaches a cycle time of less than 6 seconds per finished lid to support uninterrupted mass manufacturing. As a high-efficiency automatic lunch box lid gasket fitting machine, it only requires one operator for simply refilling silicone rings into dual magazines; all other production steps run fully automatic. Two magazines store 200 silicone rings total, delivering around 20 minutes of continuous production at standard operating parameters.

 

2,Wide Size Compatibility & Fast Product Changeover

This Silicone Seal Ring Lunch Box Assembly Machine fits mainstream square lunch box lids and silicone sealing rings without complicated fixture replacement:

Silicone seal ring: Diameter 100–250 mm, thickness 3–10 mm, height 3–10 mm

Square lunch box lid: Length 120–220 mm, width 90–150 mm, height 8–15 mm

Model switching only takes 5–30 minutes, maximizing workshop line utilization for mixed batch orders.

 

3, End-to-End Automation Linked Directly With Injection Molding

The front conveyor of the Silicone Seal Ring Lunch Box Assembly Machine seamlessly docks with injection molding equipment. Fresh molded lids automatically flow into the assembly station, removing manual intermediate transfer and lowering contamination risks for food-grade containers. This food container silicone seal assembly machine perfectly matches standardized food container production lines for stable and hygienic manufacturing.

Full Technical Specifications for ES-138 Silicone Seal Ring Lunch Box Assembly Machine

 

Parameter	Standard Value
Compatible silicone ring	Dia 100–250mm, Thickness 3–10mm, Height 3–10mm
Compatible square lunch box lid	L120–220 × W90–150 × H8–15mm
Production cycle	<6 seconds per piece
Required operator	1 person (silicone ring loading only)
Continuous runtime with full magazines	~20 mins (200 silicone rings)
Model changeover time	5–30 mins
Power supply	AC 220V, 50Hz
Rated power	4 kW
Machine weight	1,000 kg
Overall dimension	L6000 × W1750 × H2000 mm

Premium Brand Core Electrical Hardware

 

Our Silicone Seal Ring Lunch Box Assembly Machine adopts well-known industrial components to guarantee long-term stable performance and easy spare part sourcing worldwide:

PLC & Servo Motors: HCFA / Xinje

Air Cylinders: Xingchen

Touch Screen: FINE

Control Electrical Parts: YIJIA buttons, Chint relays & contactors, Meanwell switching power supply

Complete Automatic Working Flow of Silicone Seal Ring Lunch Box Assembly Machine

 

Every workstation of the Silicone Seal Ring Lunch Box Assembly Machine runs synchronously under unified PLC control for precise, repeatable assembly:

1,Injection-molded lids enter the machine via incoming conveyor

    2,Pneumatic sorting + servo motor flips lids 180° upward

3,Dual silicone ring feeding station for pre-storing gaskets

4,​Mechanical gripper picks up silicone rings and evenly expands them

5,expand the silicone seal ring

6,Electric cylinder precision press-fits silicone gaskets into lid cavities Lid ear folding mechanism shapes tabs with three reciprocating presses

7,Lid ear folding mechanism shapes tabs with three reciprocating presses

8,Finished lids with fitted seals output via discharge conveyor.

Why Food Container Factories Choose Our Silicone Seal Ring Lunch Box Assembly Machine

 

1,Sharp labor cost reduction: Replace 3–5 manual assembly workers with one loader

2,Consistent sealing quality: Eliminate human errors like missing, offset or damaged silicone gaskets

If your workshop manufactures square plastic food containers, lunch boxes or meal prep lids, our ES-138 Silicone Seal Ring Lunch Box Assembly Machine is the perfect automation upgrade to solve slow manual fitting, unstable sealing quality and excessive labor costs. This professional lunch box cover rubber gasket press machine helps manufacturers achieve standardized and high-speed gasket assembly production.

3,Flexible for small batches and multi-model orders with fast fixture switching

4,Full transparent safety enclosures for operator protection and clear running observation

5,Low maintenance downtime with standardized global spare parts supply

 

FAQ | Silicone Seal Ring Lunch Box Assembly Machine (10 Questions)

 

Q1: What products is the Silicone Seal Ring Lunch Box Assembly Machine designed for?

A1: It’s built exclusively for automatic silicone seal ring press-fitting on square or round  plastic lunch box lids. It can directly connect to injection molding machines to complete gasket assembly, tab folding and finished product output in one fully automatic line.

Q2: What size ranges of silicone rings and lids does the Silicone Seal Ring Lunch Box Assembly Machine support?

A2: Silicone ring: Dia 100–250mm, thickness/height 3–10mm; Square lid: L120–220mm × W90–150mm × H8–15mm. Custom fixtures are available for out-of-standard sizes.

Q3: How fast is the Silicone Seal Ring Lunch Box Assembly Machine’s production speed?

A3: Cycle time is less than 6 seconds per lid, with a stable theoretical output of 600 pieces per hour for continuous mass production.

Q4: How many operators are needed to run the whole Silicone Seal Ring Lunch Box Assembly Machine line?

A4: Only 1 worker is required, whose sole job is refilling silicone rings into the dual magazines. All other processing steps run fully automatically, replacing 3–5 manual assembly staff.

Q5: How long can the Silicone Seal Ring Lunch Box Assembly Machine run after fully loading silicone ring magazines?

A5: Two magazines hold 200 silicone rings total, supporting roughly 20 minutes of non-stop operation under standard working parameters before refilling.

Q6: How much time does product model changeover take on the Silicone Seal Ring Lunch Box Assembly Machine?

A6: Standard switching time is 5–30 minutes depending on product differences and operator familiarity. Quick-change press-fit modules greatly shorten mold replacement work.

Q7: Does this Silicone Seal Ring Lunch Box Assembly Machine work with injection molding machines without manual transfer?

A7: Yes. The front incoming conveyor seamlessly links with injection equipment; newly molded lids automatically flow into the assembly line to avoid manual handling and food contamination risks.

Q8: What brand core components are equipped on the Silicone Seal Ring Lunch Box Assembly Machine?

A8: All key parts adopt mature industrial brands for stable operation: HCFA/Xinje PLC & servo motors, Xingchen cylinders, FINE touch screen, Chint electric parts, Meanwell power supply. Spare parts are easy to source globally.

Q9: Is the Silicone Seal Ring Lunch Box Assembly Machine equipped with full safety protection?

A9: Yes. The whole assembly zone is covered with transparent full safety enclosures to prevent accidental contact with moving parts, complying with standard industrial safety regulations while allowing clear running observation.

Q10: What after-sales support can we get after purchasing the Silicone Seal Ring Lunch Box Assembly Machine?

A10: We provide on-site installation, commissioning and operator training; 1-year warranty for core electrical components; lifetime remote video technical support and fast global spare parts delivery. Custom fixture design is available for special product requirements.