Injection Pen Assembly Line — Pre-Assembly and Final Assembly Solutions
Product Introduction
Manufacturing an injection pen at commercial scale requires two distinct but interconnected production stages. Pre-assembly transforms molded plastic components — pen bodies, dose selectors, clutch mechanisms, and drive sleeves — into a structurally complete pen body. Final assembly integrates the drug-filled cartridge into that pen body, sets the dosing mechanism, performs force-controlled joining, and verifies device function through 100% inline testing.The engineering challenge is not building two separate machines.
It is ensuring that both stages share a unified control architecture, a common data backbone, and consistent process parameter management — so that a deviation detected at final assembly can be traced back to its root cause in pre-assembly without cross-referencing disconnected systems.
DROFEN provides both stages as a unified platform: Siemens S7-1500 controllers, Profinet communication backbone, electronic camming for motion synchronization, and a single audit trail architecture covering every station from first component pick to final functional test.
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![Automatic Insulin Injection Pen Final Assembly Machine]()
Automatic Insulin Injection Pen Final Assembly MachineAutomatic Injection Pen Final Assembly Line: High-speed integration of drug-filled cartridges into pre-assembled pen bodies at up to 160 pens per minute. Rexroth servo drives with electronic camming,read more -
![Automatic Insulin Injection Pen Pre-Assembly Machine]()
Automatic Insulin Injection Pen Pre-Assembly MachineAutomatic Injection Pen Pre-Assembly Machine: Servo-driven assembly of molded plastic components into structurally complete pen bodies at up to 160 ppm. Handles pen body shells, dose selectors,read more
Key Advantages & Features
Our pen injector equipment is designed to improve production stability, process coordination, and quality control across both pre-assembly and final assembly stages.
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Advantage
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Description
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Unified Control Platform
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Siemens S7-1500 + TIA Portal + WinCC across both pre-assembly and final assembly. One engineering environment, one validation package for the entire production chain.
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Production Speed
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Up to 160 pens per minute for both pre-assembly and final assembly stages (product-dependent).
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Servo-Driven Motion
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Rexroth IndraDrive servo axes with electronic camming. No pneumatic cylinders in quality-critical operations. Deterministic, repeatable motion profiles at every station.
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Inline Process Monitoring
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Burster Digiforce 9307 force-displacement monitoring and Keyence vision inspection at critical assembly points. 100% inline verification — no sampling.
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21 CFR Part 11 Data Integrity
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Five-element audit trail (timestamp, user ID, initial value, new value, mandatory comment) stored in tamper-proof database. Electronic signatures with dual authorization for critical parameter changes.
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Project-Specific Configuration
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Line length, station count, number of servo axes, and test depth are configured per pen platform and production volume. From pilot-scale to full commercial production.
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Product Types
Our Pen Injector Assembly Lines are categorized for versatile applications, from basic to advanced configurations:
Pen Injector Pre-assembly Equipment
Automated assembly of molded plastic components into structurally complete pen bodies. Servo-driven feeding, snap-fit insertion, ultrasonic welding, and force-controlled pressing at up to 160 ppm. Station count configured per pen platform.
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Pen Injector Final Assembly Lines
Cartridge integration, dose calibration, force-controlled joining, and 100% mechanical functional testing at up to 160 ppm. Rexroth servo drives with electronic camming — zero pneumatics in the critical assembly path.
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Inline Functional Testing Modules
Burster Digiforce 9307 force-displacement monitoring, Keyence vision inspection, and mechanical function verification — integrated into the assembly line as dedicated stations, not bolted on afterward.
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Downstream Packaging and Serialization Integration
Configurable connection to labeling, tray loading, serialization, and case packing. Unified Profinet backbone ensures traceability continuity from assembly through to logistics.
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Product Applications
Our Pen Injector Assembly Lines drive innovation across diabetes management and beyond, adapting to diverse therapeutic needs:
Insulin Pen Manufacturing Projects：Equipment solutions for automated assembly of insulin pen platforms, supporting improved production consistency and more efficient large-volume manufacturing.
GLP-1 Pen Device Production Expansion：Suitable for manufacturers expanding capacity for pen-based injectable products, with flexible configuration according to device structure and project scale.
Multi-component Pen Injector Assembly： Designed for pen injector products requiring coordinated handling of multiple plastic and functional components across pre-assembly and final assembly stages.
Pilot-to-Commercial Scale-up: Supports project transition from early production planning and pilot manufacturing to larger commercial deployment through modular equipment configuration.
Related Technical Resources
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As one of the leading pen injector assembly line manufacturers and suppliers in China, our products have good reputation in the market. We warmly welcome you to wholesale high quality pen injector assembly line from our factory. Also, custom service is available.
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