Home / Product / Door and Window Frame Roll Forming Line / Inner Window Frame Roll Forming Machine
Door and Window Frame Roll Forming Line
Inner Window Frame Roll Forming Machine
Inner Window Frame Roll Forming Machine
Inner Window Frame Roll Forming Machine
Inner Window Frame Roll Forming Machine
Inner Window Frame Roll Forming Machine

Inner Window Frame Roll Forming Machine

The Inner Window Frame Roll Forming Machine is a specialized piece of equipment for producing interior window frames, partition window frames, and decorative window frame profiles. The machine features specially designed rollers for different window frame cross-sectional structures, enabling continuous, efficient, and stable production. The products offer advantages such as good dimensional consistency and easy installation, and are widely used in interior decoration, office partitions, and building door and window systems.

Inner Window Frame Roll Forming Machine — Professional manufacturer, fully automated intelligent production line, high efficiency and stability, versatile multi-purpose machine.

PREV: Outer Window Frame Roll Forming Machine
NEXT: No next product

Equipment Introduction

Parameter

Flowchart

Process Flow

Contact

I. Equipment Overview

The Inner Window Frame Roll Forming Machine is a specialized cold-roll forming production line designed for manufacturing steel inner window frame profiles. The inner window frame constitutes the structural border surrounding the sides and top of a window opening; the precision of its cross-section and its structural integrity directly determine the window's installation quality, sealing performance, and service life. Utilizing a continuous cold-roll forming process, the equipment transforms metal coils into finished inner window frame profiles through an integrated workflow comprising uncoiling, guided feeding, roll forming, hydraulic cutting, and discharge.
The entire line features fully automated PLC control and a touchscreen HMI, ensuring a continuous, automated operation from uncoiling to the discharge of finished products. The equipment utilizes a wall-plate structure with a double-row chain drive, offering high rigidity, precision, and durability. It is compatible with various metal sheets—such as galvanized steel and low-carbon steel (e.g., Q235)—ranging from 0.8 mm to 1.1 mm in thickness. It operates at a forming line speed of 0–15 m/min (excluding cutting time) and employs approximately 14 forming stations. Requiring only one operator, this machine is essential equipment for door and window manufacturers aiming to achieve large-scale, standardized, and intelligent production. The window frame profiles produced by this machine feature optimized cross-sectional shapes, high dimensional precision, and lightweight construction.


II. Core Advantages and Selling Points

(1) Wall-plate style dual-chain drive for smooth, reliable operation
The forming machine utilizes a wall-plate style dual-chain drive structure. The wall-plate frame offers high rigidity and excellent resistance to deformation, while the dual-chain design delivers greater transmission torque and enhanced operational stability. Compared to single-chain systems, this dual-chain configuration ensures a lower failure rate and a longer service life during prolonged, high-load operation, guaranteeing stable performance under intensive use. Powered by a 7.5 kW motor, the machine provides ample power to ensure stable and efficient processing of 0.8–1.1 mm thick sheet metal through the 14-stage forming sequence.

(2) 14-stage precision roll forming for accurate, stable cross-sectional dimensions
The machine employs a progressive cold-roll forming process comprising approximately 14 stages to gradually shape the metal sheet into the standard cross-section of an inner window frame. This scientifically optimized 14-stage layout effectively minimizes material stress concentration, ensuring consistent cross-sectional dimensions and precise angles. Unlike traditional segmented processing using press brakes, this cold-roll forming process enables the production of profiles featuring complex details and multiple bends in a single, continuous operation. Shaft Material: 40Cr steel, quenched and tempered (HB 220–260), offering excellent comprehensive mechanical properties.
Shaft Diameter: Large-diameter (Φ60 mm) forming shaft, providing high load-bearing capacity.
Shaft Processing: CNC turning followed by precision cylindrical grinding to ensure dimensional accuracy and superior surface finish.
Roll Tooling: 2 sets (enabling rapid production of various window frame specifications).
Roll Material: GCr15 steel, quenched (HRC 58–60), offering high hardness and excellent wear resistance.
Roll Processing: CNC turning to ensure precise radial and axial runout control.
Spacers: Machined from thick-walled tubing to minimize shaft runout and ensure strict form and position tolerances; designed to maximize contact area with the rolls, with a clearance fit between the inner bore and the shaft.

(3) Turkish-style straightening head ensures product straightness
Equipped with a Turkish-style straightening head, the machine performs in-line straightening on the formed inner window frame profiles, effectively eliminating longitudinal bending and twisting deformations caused during the forming process. The cold-rolled products exhibit excellent straightness, free from twisting or bending. Meeting straightness standards ensures effective sealing and smooth operation during the subsequent installation of window sashes.

(4) Drive-side safety guard for safety and reliability
A safety guard is installed on the drive side, fully enclosing moving parts such as chains and transmission components. This effectively prevents accidental operator contact with moving parts, ensuring safe production. Additionally, the guard is dust- and oil-resistant, protecting transmission components from external contamination and extending the equipment's service life.

(5) Versatile, flexible production
Equipped with two sets of roll tooling, the machine enables rapid production of inner window frame profiles in various specifications. By simply changing the roll tooling, a single machine can produce window frames with diverse cross-sectional shapes to meet varying architectural standards. Operators can perform these changeovers without the need for specialized technical personnel, significantly increasing equipment utilization and drastically shortening lead times for small-batch, customized orders.

(6) Fully Automated PLC Control for Intelligent Production
Features fully automated PLC control and a touchscreen HMI, enabling comprehensive digital process management. Operators can configure parameters—such as production speed, cut length, and output quantity—with a single touch. Supports the pre-programming of multiple production tasks for continuous, automated operation. Equipped with real-time monitoring and fault warning systems, the machine automatically alerts operators to anomalies and displays the specific cause of the fault. Operators can become proficient and work independently after just 1–2 days of training, significantly reducing skill requirements.

(7) Robust, Durable, Stable, and Reliable
The forming frame utilizes a wall-plate structure, offering high rigidity and excellent resistance to deformation.
GCr15 quenched rollers (HRC 58–60) ensure high hardness, superior wear resistance, and a long service life.
40Cr quenched and tempered shafts (HB 220–260) provide excellent comprehensive mechanical properties.
Precision machining via CNC turning and cylindrical super-finishing guarantees accuracy regarding circular and radial runout.
Key electrical components are sourced from internationally renowned brands, ensuring low failure rates and long-term reliability.


III. Technical Parameters

Item Parameter
Applicable materials: Galvanized sheet, low-carbon steel (e.g., Q235), etc.
Material thickness: 0.8–1.1 mm
Machine structure: Wall-plate type with chain drive (double-row)
Number of forming stations: Approx. 14 stations
Shaft material: 40Cr steel, quenched and tempered (HB 220–260)
Shaft diameter: Φ60 mm
Shaft processing: CNC turning followed by precision cylindrical grinding
Forming machine motor power: 7.5 kW
Line speed 0–15 m/min (excluding punching and cutting)
Roll sets: 2 sets
Roller material: GCr15 steel, quenched (HRC 58–60)
Roller processing: CNC turning (ensuring control of circular and radial runout)
Spacer sleeves: Machined from thick-walled tubing (ensuring geometric tolerances)
Straightening mechanism: Turkish-style straightening head
Safety guards: Protective cover installed on the drive side
Control system: Fully automatic PLC control
Operators 1 person


IV. Production Process

Uncoiling → Guided Feeding → Roll Forming (14 Stations) → Hydraulic Shearing → Discharge

Process Description
Uncoiling: Manual or hydraulic uncoiler supports the metal coil and ensures stable feeding; maximum load capacity is customizable.
Guided Feeding: Lateral roller guides ensure the strip enters the main forming unit in the correct position.
Roll Forming: 14-station progressive cold-roll forming using GCr15 quenched rollers to gradually form the standard inner window frame profile
Hydraulic Shearing: Hydraulic fixed-length cutting; offers high precision and clean, smooth cuts.
Discharge: Output of finished products; orderly discharge.


V. Application Areas

The inner window frame profiles produced by this cold-roll forming equipment are widely used in the following sectors:
Residential and civil buildings: Inner window frames for doors and windows in offices, retail stores, private homes, hotels, etc.
UPVC window and door components: Capable of producing steel reinforcements (liners) for UPVC windows; a key piece of auxiliary equipment for UPVC window and door manufacturing.
Commercial and public buildings: Inner window frame systems for shopping malls, hotels, hospitals, schools, and similar structures.
Industrial buildings: Inner window frame profiles for industrial plants, warehouses, and other industrial facilities.
Customized window and door projects: Production of window frame profiles with special dimensions and complex cross-sections based on original customer drawings.
Export-oriented projects: Suitable for producing window and door frame profiles destined for international markets, such as Europe.


VI. Market Outlook

Driven by the continuous development of the global construction industry and steady growth in the door and window market, the market for cold-roll forming equipment for interior window frames is showing a positive growth trend.
Sustained growth in the construction industry: The construction industry is one of the primary sectors for cold-roll forming equipment applications, accounting for over 40% of the total cold-roll forming market share. As urbanization progresses and the construction industry expands, steel interior window frames—valued for their high strength, corrosion resistance, and dimensional precision—are being widely adopted in residential, commercial, and public infrastructure projects.
Significant advantages of the cold-roll forming process: Cold-roll forming offers high material utilization, excellent forming precision, high production efficiency, and low costs. Compared to traditional bending methods, cold-roll forming ensures superior consistency in long profiles and faster production speeds, while enabling the creation of profiles with complex details and multiple bends in a single continuous operation. The resulting products feature optimized cross-sectional shapes, uniform hardness distribution, high dimensional accuracy, and lightweight characteristics.
Trends toward automation and intelligence: Equipment is evolving toward full automation and intelligent operation. PLC systems centrally control the entire line—including uncoiling, forming, cutting, and discharge—allowing for automated production based on pre-set parameters for multiple product specifications. The market penetration of fully automated, intelligent window frame forming equipment continues to rise.
Demand for customization and flexible production: As the door and window market demands a wider variety of product types and specifications, there is growing demand for flexible window frame forming equipment capable of rapid tooling changes and multi-purpose functionality. With the modern construction industry increasingly requiring special dimensions and complex cross-sections, customized cold-roll forming solutions are becoming a key industry trend.

VII. Service and Support

Solution Design: We provide personalized equipment selection and production line layout based on customer product drawings, capacity requirements, and target markets.
Custom Manufacturing: We support non-standard customization; orders can be placed using cross-sectional drawings or samples, with full oversight from roll design to complete machine manufacturing.
Installation and Commissioning: Engineers provide on-site installation, commissioning, and operator training to ensure rapid production startup.
After-Sales Support: We offer long-term technical consultation and spare parts supply; our engineers hold all necessary visas and are available for on-site service worldwide at any time.
Continuous Optimization: We provide equipment modification and capacity upgrade services to adapt to changing production needs.


VIII. Why Choose Us

Nearly 20 years of manufacturing experience: Mature technology, refined processes, and reliable quality
Wall-plate style double-row chain drive: Smooth and reliable operation, high rigidity, high torque, and long service life
14-stage precision forming: GCr15 quenched rollers (HRC 58–60), 40Cr heat-treated shafts (Φ60mm), processed via CNC and ultra-precision grinding
2 sets of roller tooling: Rapid profile switching and multi-purpose capability to meet diverse production needs
Turkish-style straightening head: Precise straightening ensures window frame straightness and guarantees a tight seal for sash installation
Drive-side protective cover: Safe and reliable; dust- and oil-proof to extend equipment lifespan
High-precision manufacturing: Consistent product dimensions and stable quality
High-efficiency production: Line speed of 0–15 m/min; the entire line can be operated by a single person
Intelligent control: Fully automatic PLC with touchscreen interface; one-touch settings and automatic counting
Direct manufacturer: No middlemen, offering excellent value for money
Global service network: Engineers hold all necessary visas, ensuring rapid response

Item Specification
Forming machine structure Wall-plate style with double-row chain drive
Shaft material 40Cr steel, quenched and tempered (HB 220–260)
Shaft diameter Φ60 mm
Shaft processing method CNC turning followed by precision cylindrical grinding
Forming machine motor power 7.5 kW
Forming speed 0–15 m/min (excluding punching and cutting)
Number of forming stations Approx. 14
Rolling thickness 0.8–1.1 mm
Material developed width Subject to the actual width used during machine testing
Roller sets 2 sets
Roller material GCr15 steel, quenched (HRC 58–60)
Roller processing method CNC turning to ensure precise circular and radial runout tolerances
Spacers Machined from thick-walled tubing to minimize shaft runout and ensure form and position tolerances; designed to maximize contact area with rollers, with a clearance fit between the inner bore and the shaft
Straightening mechanism Turkish-style straightening head
Safety device Protective guard installed on the drive side

EbTVH

Uncoiling — Guided Feeding — Roll Forming — Hydraulic Shearing — Discharge

We can provide you with a satisfactory plan!

What's your name?

What's your email address?

What's your telephone?

Your message

SEND
About
Wuxi Yanwu Xinhui Technology Co., Ltd.

Established in 2012, Wuxi Yanwu Machinery Co., Ltd., is a professional manufacturer specializing in the R&D, design, manufacturing, and servicing of cold roll forming equipment. The company is dedicated to providing global customers with integrated solutions for automated cold roll forming production lines.

Our main products include cable tray forming machines, racking forming machines, C/Z purlin machines, solar mounting bracket forming machines, floor deck machines, door frame machines, automotive profile equipment, and cut-to-length/slitting lines.

These products are widely used in the construction, electrical power, logistics and warehousing, automotive manufacturing, new energy, and infrastructure sectors.

Certificate Of Honor
News
  • The new generation of slot-type cable tray cold bending machine has been launched with great success.
    The new generation of slot-type cable tray cold bending forming machine has been officially launched. It is targeted at cable tray manufacturing enterprises and focuses on the profile production requirements of power infrastructure, data centers, and new energy supporting projects. With an integrated continuous cold bending process, it addresses the industry pain points of traditional split bending processes, such as poor accuracy, low efficiency, and high labor costs. It provides cable tray manufacturers with automated and highly stable profile production equipment solutions. With the continuous construction of new power systems, data centers, factory and municipal distribution projects, slot-type cable trays, as protective support components for cables, have higher requirements for profile size consistency, forming strength, and delivery cycle. The traditional processing mode often involves individual bending of plates and secondary punching, with multiple process flows, which are prone to bending deviations, hole misalignment, and incomplete jointing, resulting in high material loss and high dependence on skilled workers. This slot-type cable tray cold bending machine integrates opening, leveling, online punching, continuous roller pressing cold bending, servo fixed-length cutting, and material stacking. After the galvanized steel strip is sent to the production line, it is formed into a complete slot-type cable tray in one step, without the need for secondary processing. The equipment uses multiple precision rolling rollers for progressive cold bending forming, with a forming size error controlled within ±0.5mm, good slot body straightness, regular bending edges, strong finished product rigidity, and effectively guarantees the later cable tray jointing and installation accuracy. It is equipped with a PLC touch control intelligent system, allowing parameters to be set quickly, and it can quickly switch between various cable tray specifications, suitable for different width and height slot-type cable tray production. It is multi-purpose in one machine. The production line operates stably, forms quickly, significantly reduces the number of workers, reduces material loss, and improves production capacity. The equipment is compatible with various raw materials such as galvanized plates and color steel plates, and the produced slot-type cable trays are widely used in data centers, factory distribution, rail transit, photovoltaic and wind power, building construction, etc., meeting the requirements for the protection of strong and weak wire cables. The equipment adopts a modular structure design, is convenient for maintenance, supports customized functional upgrades, and can be connected to the existing automation production lines. Based on mature equipment research and manufacturing capabilities, it can provide customers with equipment debugging, technical training, and integrated after-sales operation and maintenance services, helping cable tray manufacturing enterprises achieve automation upgrades, reduce costs, increase efficiency, and empower the high-quality development of domestic and foreign power infrastructure supporting industries.
    READ MORE
  • L-edge Angle Steel Profile Machine: Cold bending forming technology empowers the new infrastructure of architectural decoration.
    Product Positioning and Core FunctionThe L-edge angle steel profile machine is a cold bending forming equipment specifically designed for manufacturing L-shaped cross-section steel profiles. The L-shaped profiles, as an important component of the steel profile system, are mainly used for connecting the ceiling and walls and reinforcing the corners of partition walls. In practical applications, this product can effectively solve problems such as warping of the edges and corners of the sheet material and unsightly gaps, thereby enhancing the overall decorative effect. Steel profiles are classified by cross-sectional form into various specifications such as V-type, C-type, T-type, L-type, and U-type. Among them, the L-type profiles, due to their unique right-angle structure, play an irreplaceable role in detailed construction processes such as edge finishing and corner sealing. Technical Features and Performance AdvantagesThe modern L-edge angle steel profile machine adopts the cold bending forming process. The galvanized steel strip is continuously bent and deformed through a group of gradually changing profile surfaces during the process at room temperature, ultimately forming an accurate L-shaped cross-section. This process route has significant advantages such as high material utilization rate, fast production efficiency, and good product consistency. In terms of automation control, the advanced L-type profile production line has achieved full-process automation operations. A typical production line configuration includes: an automatic two-in-one unwinding and leveling machine, a fully automatic servo tracking rolling system, high-precision and high-speed forming equipment, a fully automatic servo tracking shearing system, and core modules such as the support frame. Through the computer control system for tracking rolling and shearing, the equipment can simultaneously complete punching and cutting operations during the forming process, effectively replacing the traditional post-forming punching process, which saves labor and ensures product consistency. In terms of forming accuracy, the rollers made of high-strength mold steel such as Cr12MoV, after vacuum heat treatment, can reach a hardness of HRC58-62, ensuring long-term stable operation. Combined with the servo-driven feeding system, the feeding accuracy can be controlled within ±0.5mm, meeting the strict requirements of architectural decoration for the size accuracy of the profiles. Trend of Intelligent UpgradeCurrently, the L-edge angle steel profile machine is accelerating its evolution towards intelligence and flexibility. The PLC control system is equipped with a user-friendly touch screen interface, supporting multi-language operation and formula storage functions. Operators can quickly call up the production parameters of different specifications of products to achieve rapid model change. It is worth noting that the integration of laser cutting technology with the profile machine is becoming a new industry trend. Compared with traditional mechanical shearing, laser cutting has advantages such as smooth and hairless cutting edges, no contact with molds, and low noise. The cutting edge width can be controlled within 0.1- 0.3 mm. This technological breakthrough not only improves product accuracy but also enables economic small-batch and multi-variety customized production, providing a new solution for the processing of irregular components in prefabricated buildings. Market Prospects and Industry OpportunitiesFrom the investment dynamics of the steel profile equipment industry, the market for steel profile equipment remains active. For example, Guangdong Quan Tan Jing Gong Technology Co., Ltd. has a new project with a total investment of 150 million yuan, mainly engaged in the production of fully automatic universal steel profile machine production lines and conventional steel profile machines. After the project is completed, it is expected to produce 300 conventional steel profile machines annually. This investment scale reflects the continuous demand for steel profile equipment in the market. Industry analysis indicates that with the deepening of the concepts of prefabricated buildings and green construction, steel profiles, as a lightweight, high-strength, fire-resistant, and easy-to-install new type of building material, their application fields will continue to expand. From hotels, airports, shopping malls to office buildings and old building renovations, the steel profile system is playing an increasingly important role in various building scenarios. For the L-edge angle steel profile machine, the continuous expansion of the downstream application market will directly drive the growth of equipment demand. Advanced equipment with high precision, high efficiency, and intelligence will occupy a competitive advantage in this round of industrial upgrading.
    READ MORE
  • Technological innovation drives industrial upgrading and promotes the development of automotive lightweighting.
    Technical upgrades lead industry development.The modern cold bending forming machine for automotive profiles has undergone a comprehensive upgrade from traditional hydraulic drive to servo drive technology. The servo motor-driven forming equipment not only improves positioning accuracy but also significantly reduces energy consumption and noise levels, with maintenance costs dropping sharply. In terms of forming accuracy, the axial repeat positioning accuracy of advanced equipment can reach -0.01 mm, and the upper wheel positioning accuracy reaches 0.02mm, which can meet the strict dimensional tolerance requirements of automotive structural components. The half-diameter bending capability is a significant technological breakthrough in current automotive profile cold bending forming machines. Through the four-axis positioning system and ball screw closed-loop variable frequency motor control system, the equipment can achieve one-time forming of irregular shapes such as egg-shaped and elliptical, minimizing deformation during the forming process to the greatest extent. This technological breakthrough makes it possible to achieve efficient production of complex structural components such as car window frames and body reinforcement beams. Intelligentization and automation are deeply integrated.Against the background of Industry 4.0, automotive profile cold bending forming machines are accelerating their evolution towards intelligence. The PLC control system is equipped with a user-friendly touch screen interface, supports multi-language operation, can store multiple product formulas, and enables rapid switching of different specifications of profiles. The intelligent parameter storage system significantly reduces the changeover time, and some advanced equipment can complete the mold change in 30 minutes, with an efficiency increase of 70% compared to traditional equipment. Full-process automation operations have become the industry standard. From feeding, guiding, and forming to welding, cutting, and packaging, the entire production line can operate without human intervention, with only 1-2 people on duty per production line. The integration of the automatic stacking system further reduces manual intervention, ensuring the neat stacking and efficient turnover of finished profile products. Continuous breakthroughs in lightweight material processing capabilitiesFacing the increasing demand for high-strength steel and aluminum alloy materials in the automotive industry, the technical adaptability of cold bending forming equipment is constantly improving. Modern equipment can handle materials such as strengthened steel and galvanized steel with thickness ranges of 0.3-5.0mm. The rollers use Cr12MoV mold steel after vacuum heat treatment, with a hardness of HRC58-62, ensuring no cracking during high-strength steel forming. To address the industry pain point of high-strength steel forming prone to rebound and cracking, equipment manufacturers have optimized the roller curve design and adopted multi-pass progressive roller pressing technology to effectively solve this technical problem. The section size tolerance can be stably controlled within ±0.2mm, the hole position accuracy is fine to ±0.1mm, and the product qualification rate can reach over 99.5%. The market prospect is broad.According to industry research, the cold bending forming machine market is experiencing a rapid growth period. In the automotive manufacturing field, with the explosive growth of the new energy vehicle industry, the production demand for core structural components such as battery trays and body reinforcement beams has significantly increased. The widespread application of lightweight materials and the increase in complex pipe component structures continue to drive the demand for advanced cold bending forming equipment. Industry insiders point out that in the future, cold bending forming technology will evolve towards multi-axis linkage and flexible manufacturing. The implementation of artificial intelligence and machine vision technologies will give equipment the ability to perform online quality inspection, and digital twin technology will be applied to forming process simulation, further reducing trial-and-error costs and accelerating new product development speed. Equipment manufacturers with the ability to provide customized solutions will gain a competitive advantage in this round of industrial upgrading.
    READ MORE
Door and Window Frame Roll Forming Line Industry knowledge
phone Contact
Product News