Precision CNC Aluminum Spacer Bending Machine for Insulating Glass

Core Features

• Control system and drives: The CNC Aluminum Spacer Bending Machine for Insulating Glass is equipped with a Siemens PLC, Kinco touchscreen, Fuji servo drives, and Airtac pneumatic components. The host controller manages data storage and program selection, while a sub-controller handles real-time machine sequencing to prevent operator input errors.
• Milling and frame accuracy: A dedicated milling station flattens the spacer surface before bending and corner joining. Finished frame dimensions are held within ±0.5 mm of the programmed values, which helps maintain corner seal integrity in the final IGU.
• Integrated processing functions: The machine performs automatic bending, profile cutting, and seamless corner jointing in one continuous cycle. Thirty-two frame shapes can be stored in memory. Four material storage stations accommodate spacer widths from 6A to 30A, allowing quick changeover between different profiles.
• Dual bending and corner insertion: External and internal bending heads are both available. Corner joints can be made automatically for volume production or manually for small batches and custom shapes, giving the operator flexibility based on order type.
• Laser marking module: Three marking modes are selectable for adding logos, product codes, or text directly onto the spacer surface before or after bending, which can be configured to meet OEM labeling requirements.
• Machine construction and service interval: The frame and guide elements are built for industrial duty cycles. Planned maintenance follows daily, monthly, and annual checklists, with commonly accessed components arranged for straightforward inspection and replacement. The manufacturer provides a two-year warranty on the complete machine and one year of free replacement on wear parts.

Machine Structure & Working Principle

The CNC Aluminum Spacer Bending Machine for Insulating Glass is organized into six mechanical subsystems that move the aluminum strip from raw coil input to finished spacer frame output:

• Bending mechanism — Accepts external or internal bending heads depending on the configuration. The selected head forms the spacer profile to the programmed corner angle with the required bend radius.
• Milling mechanism — A precision milling unit flattens the profile surface prior to bending. This step removes irregularities that could cause corner deformation and helps achieve consistent seal contact in the finished unit.
• Transmission mechanism — Drives the aluminum strip from the loading station through each processing stage. Motion is synchronized with the servo feed to avoid strip buckling or misalignment.
• Auxiliary centering mechanism — Adjusts roller position to keep the strip centered as it enters the bending station, correcting minor lateral drift that could affect dimensional accuracy.
• Corner joint mechanism — Supports both automatic material splicing for high-output runs and manual splicing for lower-volume or prototype production.
• Automatic servo feeding mechanism — A servo-driven feed system advances the aluminum strip to the programmed length, with speed and position controlled through the PLC to match the selected spacer specification.

Product Technical Parameters

Key Components & Supplier Information

• PLC and touchscreen: Siemens main controller with a Kinco color touchscreen. Program selection and parameter settings are entered through the touchscreen; the PLC manages execution timing and interlocks.
• Servo drives: Fuji servo motors and drives control the feeding and bending axes, providing the positioning accuracy needed for ±0.5 mm frame tolerance.
• Pneumatic system: Airtac cylinders, valves, and fittings handle clamping, bending pressure, and corner insertion functions. The pneumatic circuit includes a filter-regulator-lubricator unit on the supply line.
• Milling spindle: Hardened steel milling cutters flatten the spacer surface. Spindle speed and feed rate are set to match aluminum strip thickness and width.
• Frame and guide rails: The welded steel base supports linear guide rails for the transmission and centering mechanisms, keeping strip alignment consistent during continuous operation.
• Laser marking unit: A dedicated laser module prints logos, batch numbers, or text in one of three configurable modes, positioned either before or after the bending station according to production needs.

Application Scope

This CNC Aluminum Spacer Bending Machine for Insulating Glass is deployed in insulating glass unit production lines where aluminum spacer frames are required in medium to high volumes. Typical users include:

• Insulating glass manufacturing plants producing double and triple glazed units for residential and commercial buildings.
• Architectural glass processors supplying energy-efficient glazing, safety glass, and acoustic insulation products.
• Specialist aluminum spacer processing workshops that supply pre-bent frames to other IGU producers.
• Window, door, and curtain wall manufacturers operating in-house glass processing departments.

Packaging & Shipping

The CNC Aluminum Spacer Bending Machine for Insulating Glass is shipped in a standard export-grade wooden crate with internal bracing and moisture-resistant wrapping. The crate dimensions are built around the machine's 10500×1300×1950 mm footprint, with additional space for accessory boxes containing spare cutters, seals, and printed documentation. A pre-shipment inspection video and machinery test report are provided before dispatch. Standard delivery terms are FOB Qingdao or Jinan, with typical lead time around 30 working days from order confirmation. Transport options can be selected to suit the destination port and local delivery requirements.

How It Works

Input Dimensions – Operator enters frame size and quantity on the touch screen.

Automatic Feeding – Servo motor feeds the aluminum spacer bar to the preset length.

Precision Bending – CNC-controlled bending arms form the spacer into the desired shape with seamless corners.

Cutting & Notching – Integrated cutter trims the spacer and creates corner notches automatically.

Frame Output – Finished frame is delivered, ready for the butyl coating process.

FAQ

Q1: Are you a factory or a trading company?

A: Lebulang Machine operates its own manufacturing facility in Jinan, China, where glass and window processing equipment has been produced since 1996. R&D, production, and sales are handled within the same organization.

Q2: Do you support customization?

A: Machine functions, processing parameters, and marking modes can be adjusted to customer production requirements under OEM or ODM agreements.

Q3: What is your delivery time?

A: Standard machines ship within 30 working days. Custom configurations may extend the lead time. Several freight options are available depending on the destination.

Q4: What about the warranty and service life?

A: The warranty covers the complete machine for two years and wear parts for one year. The machine structure is designed for industrial duty cycles, and the manufacturer maintains a long-term supply of replacement components.

Q5: How to maintain the machine?

A: An operation manual with daily, monthly, and annual maintenance checklists is provided with the machine. Remote technical support is available for troubleshooting and maintenance questions after installation.