Aluminum alloy door and window profile special-shaped section processing equipment and control method

Abstract

The present application relates to profile cutting technical field. The purpose is to provide a kind of aluminium alloy door and window profile special-shaped section processing equipment, including cutting table and the conveying roller group being arranged in the both sides of cutting table;It also includes two sets of internal air support device being symmetrically arranged on the side of cutting rotary table and support frame, the internal air support device includes cavity sealing mechanism, pressure detection component and inflation assembly, the inflation assembly can inject compressed gas into support cavity according to the real-time pressure data of feedback, to make support cavity maintain preset constant pressure;The compressed gas can apply the compression force of guiding surface on support frame to profile while supporting profile side wall.The present application solves the industry pain points of support failure, cutting deformation and insufficient precision when processing open inner groove profile by traditional equipment, through the innovative design of internal constant pressure air support+external accurate positioning+attitude collaborative constraint, realizes high-precision, high versatility and high-efficiency profile cutting.

Description

Technical Field

[0001] This invention relates to the field of profile cutting technology, specifically to a processing equipment and control method for irregular cross-sections of aluminum alloy door and window profiles. Background Technology

[0002] In the processing of aluminum profiles, PVC profiles, and irregular steel components for doors and windows, rotary arbitrary angle cutting saws have become core equipment for profile end face cutting and corner cutting due to their ability to flexibly perform beveling and corner cutting within the range of 0° to 180°. They are especially widely used in profile processing scenarios that require splicing into right-angle, acute-angle, and obtuse-angle frame structures. For open asymmetrical cross-section profiles with internal groove structures such as U-shaped, C-shaped, channel-shaped, and mountain-shaped profiles, it is necessary to ensure accurate end face angles and flat cut surfaces during arbitrary angle cutting to meet the sealing and perpendicularity requirements of subsequent assembly corner cutting.

[0003] Currently, traditional rotary arbitrary angle cutting saws generally use single-sided backing positioning, external clamping, or top pressing for fixation, which can only achieve the limiting constraint of the outer contour of the profile. When processing open grooved profiles, there are significant technical defects. Because this type of profile has structures such as cantilevered thin walls, concave cavities, and open grooves, the stiffness distribution of different areas of the cross section is extremely uneven. Under the action of the saw blade cutting force, thin walls and cantilevered parts are prone to blade deflection, elastic deformation, lateral wobble, and end face warping. This directly leads to cutting angle deviation, end face tilting, and insufficient dimensional accuracy, making it difficult to meet the requirements of high-precision corner assembly.

[0004] In existing technologies, external clamping and pressing mechanisms can only constrain the overall displacement of the profile, and cannot effectively support weak areas within the inner groove cavity. Discrete ejector pins or rigid support blocks are difficult to adapt to groove structures with different contours and sizes, and are prone to problems such as inadequate support, interference with cutting, or poor versatility. In addition, traditional positioning methods lack adaptive constraints on the profile's posture. During the cutting process, the profile is prone to shifting away from the positioning support, further aggravating angular deviations and end face defects.

[0005] In summary, traditional rotary cutting equipment at arbitrary angles struggles to balance the support effectiveness, posture stability, and angular accuracy of open-grooved profiles, failing to meet the demands for multi-specification, high-precision, and high-efficiency arbitrary angle cutting processing. This has become a pressing technical challenge in the field. Summary of the Invention

[0006] The purpose of this invention is to provide a processing equipment for irregular cross-sections of aluminum alloy door and window profiles that can improve cutting accuracy and effect.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by this invention is: an aluminum alloy door and window profile irregular section processing equipment, including a cutting table and conveying roller groups arranged on both sides of the cutting table; the cutting table includes a base, a cutting turntable arranged on the base that can adjust the cutting angle and realize profile cutting, and a support frame fixedly arranged on the base and located above the cutting turntable for guiding the profile; the support frame is provided with a pressing and positioning mechanism for pressing the profile onto the cutting turntable;

[0008] It also includes two sets of internal air support devices symmetrically arranged on the support frames on both sides of the cutting turntable. The internal air support device includes a cavity sealing mechanism, a pressure detection component, and an inflation component. The cavity sealing mechanism can seal the section of the profile near the saw blade on the cutting turntable to form a relatively closed support cavity inside the profile. The pressure detection component can collect real-time pressure data in the support cavity. The inflation component can inject compressed gas into the support cavity according to the feedback real-time pressure data to maintain a preset constant pressure in the support cavity. The compressed gas can apply a clamping force to the profile towards the guide surface on the support frame while supporting the side wall of the profile.

[0009] Preferably, the sealing mechanism includes an L-shaped substrate and a mounting frame for mounting the substrate and driving the substrate to move in the up-down and back-forward directions; an extension plate is provided on both sides of the substrate, and the extension plate can be adjusted in position along the length direction of the two sides of the substrate under the drive of the telescopic drive member, so as to adjust the length of the two closed sides of the substrate.

[0010] Preferably, the two sides of the substrate are provided with slots relative to the back of the support cavity, and the telescopic plate is installed in the slots and forms a sliding fit with the two sides of the substrate; the telescopic drive is an electric telescopic rod or a pneumatic telescopic rod provided on the back of the two sides of the substrate and whose telescopic end is connected to the extension plate.

[0011] Preferably, the end of the elongated plate on the side of the substrate perpendicular to the length direction of the profile is provided with a groove adaptive part made of flexible bristles.

[0012] Preferably, the inner surface of the side of the substrate parallel to the length direction of the profile is provided with a first mounting groove and a second mounting groove; the pressure detection component is a pressure sensor disposed in the first mounting groove; the inflation assembly includes an inflation head disposed in the second mounting groove and perpendicular to the length direction of the profile, and a high-pressure gas cylinder mounted on the support frame and communicating with the inflation head; the outlet of the high-pressure gas cylinder is connected to the inflation head through an inflation pipe, and an air inlet solenoid valve is provided on the inflation pipe; the air replenishment port of the high-pressure gas cylinder is connected to an air compressor through an air replenishment pipe.

[0013] Preferably, the mounting frame includes front and rear telescopic frames arranged in the front-to-back direction and fixedly mounted on the top of the support frame, and lifting screw pairs disposed at the cantilever ends of the front and rear telescopic frames; the front and rear telescopic frames are driven by linear motors, and the lifting screw pairs are driven by lifting motors; the base plate is detachably connected to the lifting block of the lifting screw pairs via a connecting platform.

[0014] Preferably, the profile is a profile with an open inner groove, and the profile is a U-shaped profile, a C-shaped profile, or a mountain-shaped profile.

[0015] Preferably, the cutting turntable is a bottom-out cutting turntable.

[0016] Preferably, the base is provided with a flip-top protective cover, the rear side of which is hinged to the base.

[0017] Furthermore, the present invention also discloses a method for controlling the processing equipment, comprising the following steps:

[0018] S1 Equipment Initialization and Parameter Preset: Start the equipment and complete the power-on self-test of each mechanism to confirm normal operation and communication; according to the specifications, wall thickness and preset cutting angle of the profile to be processed, set the core parameters in the control system, including the motion stroke of the sealing mechanism, the constant pressure value of the support cavity, the pressing pressure of the pressing and positioning mechanism, the rotation speed and feed speed of the cutting turntable, and simultaneously complete the cutting angle adjustment and locking of the cutting turntable.

[0019] S2 Profile Conveying and Station Alignment: Place the profile to be processed on the conveyor roller assembly, start the roller assembly to convey the profile to the cutting turntable processing station, so that the end of the profile to be cut is precisely aligned with the saw blade cutting position, and complete the initial alignment.

[0020] S3 internal air support device sealing operation: Start the internal air support devices on both sides of the cutting turntable, control the system to drive the mounting frame of the sealing mechanism to move the base plate, complete the spatial fine adjustment in the front-back and up-down directions, so that the base plate is initially attached to the inner groove cavity wall of the profile; then start the telescopic drive, adjust the extension length of the extension plate, fill the gap with the end flexible bristles, and seal the cutting section of the profile near the saw blade to form a relatively sealed support cavity.

[0021] S4 support cavity constant pressure air inflation support: After the cavity is sealed, the air inflation component is activated to open the air intake solenoid valve and inject compressed gas into the support cavity; the pressure detection component collects the cavity pressure in real time and feeds it back to the control system. The pressure loss in the cavity is replenished by continuous air replenishment, so that the pressure in the support cavity is always maintained at a preset constant value. The air pressure is used to achieve flexible support of the thin wall of the profile and form a lateral clamping force towards the guide surface of the backrest.

[0022] S5 Press Positioning Mechanism Locking: After the pressure inside the support cavity stabilizes to the preset value, the press positioning mechanism on the backrest is activated, and the profile is slowly pressed down onto the bearing surface of the cutting turntable, completing the triple posture locking of the profile: external pressing + internal constant pressure support + lateral adhesion.

[0023] S6 profile precision cutting and process pressure holding: When a cutting command is issued, the cutting turntable is started, and the saw blade is driven to cut the profile according to preset parameters; during the cutting process, the air inflation component is continuously replenished with air, the pressure detection is monitored in real time, and the pressing positioning mechanism is kept in a tight state to ensure that the profile is not deformed or moved.

[0024] S7 Processing Completion and Mechanism Reset: After the saw blade finishes cutting, it resets and stops. First, the inflation component is turned off, allowing the support cavity to naturally depressurize to normal pressure. Then, the extension plate of the sealing mechanism is driven to retract, the base plate returns to its position, and it separates from the inner groove of the profile. Subsequently, the downward positioning mechanism resets upward, releasing the external pressure. The conveyor roller group is started to transport the cut profile to the unloading station, completing one processing cycle.

[0025] S8 Cyclic Processing and Equipment Cleaning: When processing profiles of the same specification continuously, repeat steps 2-7 directly; when changing profile specifications, return to step 1 to reset the preset parameters; after each processing cycle, clean the saw blade, cutting turntable, and sealing mechanism of debris in a timely manner to ensure smooth subsequent operation of the equipment.

[0026] The beneficial effects of this invention are mainly reflected in: it specifically solves the industry pain points of support failure, cutting deformation, and insufficient precision when processing open grooved profiles with traditional equipment. Through an innovative design of internal constant pressure air support + external precise positioning + attitude coordination constraint, it achieves high-precision, high-versatility, and high-efficiency profile cutting. The specific beneficial effects are as follows:

[0027] 1. The inner groove constant pressure flexible support completely eliminates cutting deformation.

[0028] A relatively sealed support cavity is formed by the sealing mechanism. The constant pressure inside the cavity is maintained by continuous air supply. The compressed gas fits the weak areas of the profile, such as the cantilever thin wall and the cantilever groove wall, in all directions to accurately offset the cutting force. This prevents the profile from deflecting, warping, or wobble from the source, ensuring a flat cut surface and accurate angles, and meeting the requirements of high-precision corner assembly.

[0029] 2. Posture constraints ensure cutting stability and precision.

[0030] By constructing a constraint system that combines internal air pressure lateral contact with the mountain and external downward pressure positioning and fixing, the problem of lateral movement during profile cutting is completely solved, ensuring that the profile position and angle are not offset, and significantly improving the dimensional and angular accuracy of cutting.

[0031] 3. Compatible with various profile specifications, highly versatile and low cost

[0032] The retractable extension plate and flexible bristle adaptive part of the sealing mechanism can flexibly match open inner groove profiles with different cross-sectional sizes and contours. The support cavity pressure, cutting parameters and other parameters can be preset with one click through the control system. There is no need to replace rigid support accessories. It can adapt to multiple specifications of processing needs and reduce the cost of equipment use and maintenance.

[0033] 4. The coordinated control design makes it easy to operate and highly efficient in processing.

[0034] Each mechanism operates in an orderly manner according to the logic of "first sealing the cavity with constant pressure, then externally pressing, and cutting with pressure throughout the process". The cutting angle is initialized and locked in advance to avoid pre-deformation of the profile. The equipment supports continuous cycle processing. When changing the profile, only the parameters need to be preset again, which simplifies the operation process and improves the efficiency of industrialized batch processing.

[0035] 5. The design is user-friendly, balancing processing safety and ease of maintenance.

[0036] The flip-top protective cover effectively blocks flying cutting debris, improving operational safety; the internal air support device adopts a modular, open structure, which facilitates cleaning and component disassembly and assembly; the inflation and pressure detection components are standard parts, making subsequent maintenance convenient and reducing equipment failure rate.

[0037] 6. Significant overall benefits and high industrial application value.

[0038] Compared with traditional equipment, this invention significantly improves the processing quality of open groove profiles and reduces the scrap of profiles due to defects; at the same time, it reduces the intensity of manual operation, balances processing accuracy and production efficiency, and provides a high-precision solution for the processing of irregular cross-section profiles for doors and windows, with broad market prospects. Attached Figure Description

[0039] Figure 1 This is a top view of the structure of the present invention;

[0040] Figure 2 This is a top view schematic diagram of the sealing mechanism;

[0041] Figure 3 This is a schematic diagram of the substrate structure;

[0042] Figure 4 This is a schematic diagram of the mounting structure of the mounting bracket.

[0043] Figure label:

[0044] 1-Conveying roller assembly, 2-Base, 3-Cutting turntable, 4-Mountain support frame, 5-Pressing positioning mechanism, 6-Internal air support device, 7-Base plate, 8-Extension plate, 9-Telescopic drive component, 10-Slot, 11-Cavity self-adaptive part, 12-First mounting slot, 13-Second mounting slot, 14-Pressure sensor, 15-Inflation head, 16-High-pressure gas cylinder, 17-Front and rear telescopic frames, 18-Lifting screw pair, 19-Connecting platform, 20-Linear motor, 21-Lifting motor. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-4 The present invention provides a more detailed description of the aluminum alloy door and window profile irregular section processing equipment and its control method. This embodiment is only used to explain the present invention and is not intended to limit the scope of protection of the present invention.

[0046] The aluminum alloy door and window profile irregular section processing equipment disclosed in this invention is mainly used for cutting aluminum alloy door and window profiles with open internal groove structures such as U-shaped, C-shaped, and mountain-shaped profiles at any angle. It addresses the technical pain points of traditional cutting equipment when processing this type of profile, such as support failure, cutting deformation, and insufficient precision. Through an innovative structural design of internal constant pressure gas support + external precise positioning + posture coordination constraint, it achieves high precision, high versatility, and high efficiency in profile cutting. At the same time, it is equipped with standardized control methods to allow the various mechanisms to work in a coordinated and orderly manner, which greatly improves the overall operation quality and industrial production efficiency of profile processing.

[0047] like Figure 1 As shown, the main structure of the aluminum alloy door and window profile irregular section processing equipment includes a cutting table and conveyor roller groups 1 symmetrically arranged on both sides of the cutting table. The conveyor roller group 1 consists of multiple rotatable roller shafts arranged in parallel, serving as the conveying carrier for the profiles. It can realize the entire process of conveying the profiles to be processed, including loading, alignment of the processing station, and unloading after processing, ensuring that the profiles move smoothly along the preset trajectory during the conveying process without deviation or jamming, and adapting to the operational requirements of industrial continuous processing. The cutting table is the core processing station of the equipment and the main carrier for achieving precise cutting of the profiles. It includes a base 2, a cutting turntable 3, a support frame 4, and a pressing and positioning mechanism 5. All components work together to provide a stable processing foundation and external positioning constraints for profile cutting.

[0048] The base 2 is a one-piece metal frame structure, serving as the supporting foundation for the entire cutting table and equipment. Its bottom is fixedly connected to the ground, possessing sufficient structural strength and stability to offset vibrations generated during saw blade cutting, preventing equipment swaying from affecting the cutting accuracy of the profile. The cutting turntable 3 is rotatably mounted in the central processing area of ​​the base 2 via a rotary bearing. Driven by a dedicated drive mechanism, it can be adjusted to any angle within the range of 0° to 180° to meet different processing requirements such as beveling and angle cutting of profiles. In this embodiment, the cutting turntable 3 adopts a bottom-out blade design, with the saw blade feeding upwards from below the cutting turntable 3 to complete the cutting operation on the profile. This design effectively avoids contamination of the profile cut surface by flying debris during cutting, while also reducing the impact of flying debris on operators and improving the safety of the processing operation. The support frame 4 is an integrated metal bracket, fixedly mounted on the base 2 and located directly above the cutting turntable 3. Its side facing the profile has a smooth guide surface that fits against the outer wall of the profile to be processed, providing stable lateral guidance and positioning during the cutting process and preventing lateral swaying. The downward positioning mechanism 5 is installed on the crossbeam of the support frame 4 and can reciprocate vertically under hydraulic or pneumatic drive. Its downward pressing end is equipped with a flexible buffer pad, which can tightly press the profile onto the bearing surface of the cutting turntable 3 without damaging the profile surface, achieving external positioning and fixation of the profile.

[0049] To fundamentally solve the support problem of weak areas such as cantilevered thin walls and suspended groove walls in open grooved profiles, this invention symmetrically installs two sets of internal air support devices 6 on the support frames 4 on both sides of the cutting turntable 3. The two sets of internal air support devices 6 are of the same specification and structural design, and operate synchronously during operation. They can form a symmetrical and uniform closure and support for the inner groove of the profile cutting section, avoiding swaying and deformation of the profile due to unilateral force, and ensuring the uniformity and stability of the support. The internal air support device 6 includes three core parts: a cavity sealing mechanism, a pressure detection component, and an inflation component. The three are electrically connected and communicate with the control system signal of the equipment to work together to achieve the closure of the inner groove of the profile, real-time monitoring of the cavity pressure, and constant pressure air replenishment, ultimately forming flexible support and lateral compression for the inside of the profile.

[0050] The sealing mechanism, as the core sealing component of the internal air support device 6, primarily functions to seal the cutting section of the profile near the saw blade, creating a relatively sealed support cavity within the profile's inner groove, thus laying the foundation for subsequent air-supported inflation. This sealing mechanism includes an L-shaped base plate 7, a mounting bracket, an extension plate 8, and a telescopic drive component 9. The base plate 7 is formed by bending a rigid metal sheet, and its L-shaped inner surface is adapted to the contour of the cavity wall of the open-groove profile, allowing it to penetrate deep into the profile's inner groove and achieve initial contact with the cavity wall, providing a basis for the sealing operation. The mounting frame is used to carry the base plate 7 and can drive the base plate 7 to make precise spatial displacement in the vertical and horizontal directions and the front and back directions to adapt to the sealing requirements of the inner groove cavity of profiles of different specifications and positions. The mounting frame includes a front and rear telescopic frame 17 and a lifting screw pair 18. The front and rear telescopic frame 17 is fixedly set on the top of the backrest frame 4 along the width direction of the profile and is driven by a linear motor 20, which can realize the front and back fine adjustment of the base plate 7 along the width direction of the profile. The lifting screw pair 18 is set at the cantilever end of the front and rear telescopic frame 17 and is driven by a lifting motor 21, which can realize the precise vertical adjustment of the base plate 7. The base plate 7 is detachably connected to the lifting block of the lifting screw pair 18 through the connecting platform 19. This detachable connection design not only facilitates the installation and removal of the base plate 7, but also allows for the replacement of base plates 7 of different sizes according to the specifications of the profile, further improving the versatility of the equipment, and also providing convenience for later maintenance and replacement.

[0051] Extension plates 8 are provided on both sides of the substrate 7. To enable flexible extension and retraction of the extension plates 8, slots 10 are provided on the back of both sides of the substrate 7 relative to the support cavity. The extension plates 8 are fitted into the slots 10 and slide against the sides of the substrate 7, allowing them to slide back and forth along the slots 10. The telescopic drive component 9 is an electric telescopic rod or a pneumatic telescopic rod, which is fixedly installed on the back of both sides of the substrate 7. Its telescopic end is fixedly connected to the end of the extension plate 8, enabling it to drive the extension plate 8 to slide along the slots 10. The extension length of the extension plate 8 is adjusted according to the actual cavity width and cavity depth of the profile groove, so as to achieve the adaptation and sealing of the cavity for open groove profiles of different specifications, and the substrate 7 and the extension plates 8 together form a closed enclosure for the profile cutting section. To ensure the relative airtightness of the cavity, a cavity adaptive part 11 is provided at the end of the extension plate 8 on the side of the substrate 7 perpendicular to the length direction of the profile. The cavity adaptive part 11 is made of flexible bristles. The flexible bristles have good deformation ability and can make close contact with the end inner wall of the profile groove as the extension plate 8 extends. It adaptively fills the gap between the cavity wall of different profiles and the extension plate 8, effectively improving the sealing of the support cavity and avoiding pressure loss caused by excessive air leakage after inflation.

[0052] The core function of the pressure detection component is to collect pressure data within the support cavity in real time and feed the collected pressure signal back to the equipment's control system, providing accurate data for constant pressure replenishment of the inflation assembly. This pressure detection component is a pressure sensor 14. A first mounting groove 12 is formed on the inner surface of the side of the substrate 7 parallel to the length direction of the profile. The pressure sensor 14 is embedded in the first mounting groove 12. This mounting method ensures that the pressure sensor 14 is connected to the inside of the support cavity for accurate pressure acquisition, while also preventing the pressure sensor 14 from protruding excessively from the inner surface of the substrate 7, thus avoiding interference with the cavity wall of the profile and affecting the sealing effect and pressure detection accuracy.

[0053] The inflation assembly is used to inject compressed gas into the sealed support cavity and, based on real-time pressure data fed back by the pressure detection component, continuously replenishes the pressure loss in the support cavity to maintain the pressure in the support cavity at a preset constant value. The inflation assembly includes an inflation head 15 and a high-pressure gas cylinder 16. A second mounting groove 13 is formed on the inner surface of the side of the base plate 7 parallel to the length direction of the profile, corresponding to the position of the first mounting groove 12. The inflation head 15 is fixedly installed in the second mounting groove 13, with its outlet direction perpendicular to the length direction of the profile, enabling it to uniformly deliver compressed gas into the support cavity and ensure uniform air pressure within the cavity. The high-pressure gas cylinder 16 is fixedly installed on the side of the support frame 4, storing high-pressure compressed gas. Its outlet is connected to the inflation head 15 via an inflation pipe. An inlet solenoid valve is installed on the inflation pipe to control the opening and closing of the inflation passage, which is automatically opened and closed by the equipment's control system based on feedback signals from the pressure sensor 14. To ensure the continuous operation of the inflation assembly, the air inlet of the high-pressure gas cylinder 16 is connected to the air compressor via an air inlet pipe. When the air pressure in the high-pressure gas cylinder 16 is insufficient, the air compressor can replenish the air into the high-pressure gas cylinder 16 through the air inlet pipe, ensuring that the inflation assembly can continuously provide compressed gas to the support cavity.

[0054] As a further optimization of the present invention, a flip-top protective cover is also provided on the base 2. The rear side of the protective cover is hinged to the base 2, enabling it to flip open and close around the hinge point. During profile cutting operations, closing the protective cover can effectively prevent profile debris generated during the cutting process from flying, protecting the personal safety of the operator and preventing debris from falling into the transmission components of the equipment and affecting its normal operation. After processing is completed or when the equipment needs to be cleaned or maintained, the protective cover can be opened, making it convenient for the operator to clean and maintain components such as the cutting turntable 3, saw blade, and base plate 7, thus improving the convenience of equipment maintenance.

[0055] This invention also discloses a control method adapted to the above-mentioned aluminum alloy door and window profile irregular section processing equipment. Based on the equipment's structural design, this method follows the core logic of first sealing the cavity with constant pressure, then external clamping, and finally pressure-maintaining cutting throughout the process. This achieves orderly and coordinated action of each mechanism, effectively avoiding deformation and movement during profile cutting and ensuring cutting accuracy. Specifically, it includes the following steps:

[0056] S1. Equipment Initialization and Parameter Preset: First, start the equipment. The equipment will automatically complete the power-on self-test of each mechanism, checking the operating status of moving parts such as the conveyor roller group 1, cutting turntable 3, internal air support device 6, and pressing positioning mechanism 5, as well as the communication status between pressure sensor 14, inflation component and control system. After confirming that all mechanisms are operating smoothly and communication is normal, the equipment enters the standby state. Then, the operator sets the core operating parameters in the equipment control system according to the specific specifications of the profile to be processed (U-shaped / C-shaped / mountain-shaped), profile wall thickness and preset cutting angle. These parameters include the movement stroke of the sealing mechanism, the preset constant pressure value of the support cavity, the clamping pressure of the pressing positioning mechanism 5, and the saw blade speed and feed speed of the cutting turntable 3. While setting the parameters, the cutting angle of the cutting turntable 3 is adjusted and locked simultaneously. There is no need to adjust the cutting angle again during the cutting process, ensuring the accuracy of the cutting angle.

[0057] S2. Profile Conveying and Station Alignment: The open-type recessed aluminum alloy door and window profile to be processed is placed stably on the conveyor roller group 1 on both sides of the cutting table. The conveyor roller group 1 is started, and the conveyor roller group 1 drives the profile to move along the preset trajectory to the processing station of the cutting turntable 3. The operator uses the positioning mark of the equipment to make the end of the profile to be cut accurately aligned with the cutting position of the saw blade, thus completing the initial alignment of the profile and ensuring the accuracy of the cutting position.

[0058] S3. Internal Air Support Device Sealing Operation: After the profile is aligned at the workstation, the internal air support devices 6 on both sides of the cutting turntable 3 are activated. The equipment's control system will drive the mounting frame of the sealing mechanism to move. First, the linear motor 20 drives the front and rear telescopic frames 17 to extend forward, causing the base plate 7 to move along the width direction of the profile towards the opening of the profile's inner groove, bringing the base plate 7 close to the profile's inner groove. Then, the lifting motor 21 drives the lifting screw pair 18 to make fine adjustments up and down, causing the base plate 7 to achieve vertical position adjustment, so that the L-shaped inner surface of the base plate 7 is aligned with the profile. The cavity wall of the groove in the profile is initially fitted; then the control system activates the telescopic drive 9, which drives the extension plate 8 to slide along the slot 10 on the back of the base plate 7. The extension length of the extension plate 8 is adjusted according to the actual size of the groove in the profile. The groove cavity adaptive part 11 at the end of the extension plate 8 extends out with the extension plate 8, and comes into close contact with the end inner wall of the groove in the profile and adaptively fills the gap. Finally, the base plate 7 and the extension plate 8 together form a closed enclosure for the profile near the saw blade cutting section, so that the groove in the profile forms a relatively sealed support cavity.

[0059] S4. Constant Pressure Inflation Support for Support Cavity: After the sealing operation of the profile's inner groove is completed, the control system starts the inflation assembly, opens the inlet solenoid valve on the inflation pipe, and the high-pressure compressed gas in the high-pressure gas cylinder 16 is transported to the inflation head 15 through the inflation pipe and evenly injected into the sealed support cavity by the inflation head 15. At the same time, the pressure sensor 14 installed in the first mounting slot 12 collects the pressure data in the support cavity in real time and continuously feeds the real-time pressure signal back to the control system of the equipment. The control system compares the received real-time pressure value with the preset constant pressure value in real time, and replenishes the pressure loss caused by the relative sealing of the support cavity by continuously replenishing air. When the real-time pressure value is lower than the preset constant pressure value, the inlet solenoid valve remains open, and the inflation assembly continuously replenishes air to the support cavity. When the real-time pressure value reaches the preset constant pressure value, the control system accurately controls the opening and closing of the inlet solenoid valve according to the feedback signal of the pressure sensor 14 to achieve micro-air replenishment, so that the pressure in the support cavity is always maintained at the preset constant value. The compressed gas forms a uniform air pressure in the support cavity. On the one hand, it can provide all-round flexible support for the weak areas of the profile, such as the cantilever thin wall and the cantilever groove wall, and accurately offset the cutting force and deformation force generated during the saw blade cutting process, so as to avoid elastic deformation and end face warping of the profile from the root. On the other hand, the uniform air pressure can form a lateral clamping force on the profile towards the guide surface of the backrest 4, so that the outer wall of the profile is always tightly attached to the guide surface of the backrest 4, preventing the profile from lateral swaying.

[0060] S5. Locking of the downward positioning mechanism: After the pressure in the support cavity stabilizes at the preset constant value, the control system of the equipment issues a command to start the downward positioning mechanism 5 on the support frame 4. The pressure rod of the downward positioning mechanism 5 moves slowly downward, and the flexible buffer pad at its downward end contacts the upper surface of the profile, and tightly and flexibly presses the profile onto the bearing surface of the cutting turntable 3. Combined with the internal constant pressure support formed by the air pressure inside the support cavity and the lateral clamping force, the triple posture locking of the profile is completed by external clamping + internal constant pressure support + lateral clamping, realizing all-round constraint on the profile from the inside out, and preventing the profile from moving and deforming during the cutting process.

[0061] S6. Precise Cutting and Pressure Holding of Profiles: After the profile completes triple attitude locking, the equipment's control system issues a cutting command, starts the cutting turntable 3, and drives the saw blade to feed towards the end of the profile to be cut at a preset speed and feed rate, completing the cutting process of the profile. Throughout the cutting process, the control system maintains the continuous air supply of the inflation component, and the pressure sensor 14 continuously collects and feeds back the pressure data in the support cavity in real time, ensuring that the pressure in the support cavity is maintained at a preset constant value. At the same time, the pressing and positioning mechanism 5 maintains a constant clamping force, maintaining triple attitude locking of the profile throughout the process, ensuring that the profile does not deform or move during the cutting process, and ensuring that the cut surface of the profile is flat and the cutting angle is accurate.

[0062] S7. Processing Completion and Mechanism Reset: After the saw blade completes the cutting of the profile, the cutting turntable 3 drives the saw blade to reset to the initial position and stop operating. The equipment control system first shuts off the inflation component, allowing the compressed gas in the support cavity to naturally depressurize to normal pressure, releasing the internal support and lateral pressure on the profile. Then, the telescopic drive 9 is activated, driving the extension plate 8 to retract and reset along the slot 10. Then, the linear motor 20 and the lifting motor 21 drive the front and rear telescopic frames 17 and the lifting screw pair 18 to move, causing the base plate 7 to move upward and backward, so that the base plate 7 is completely separated from the inner groove of the profile, completing the reset of the cavity sealing mechanism. After that, the pressure rod of the lower positioning mechanism 5 moves upward to reset, releasing the external pressure on the profile. Finally, the conveying roller group 1 is activated to transport the cut profile to the unloading station, completing one complete profile cutting cycle.

[0063] S8. Circular Processing and Equipment Cleaning: If continuous cyclic processing of profiles of the same specification is required, operators do not need to reset the equipment parameters. They can simply repeat steps S2-S7 above, effectively improving the efficiency of industrial batch processing. If different specifications of profiles need to be processed, operators return to step S1 above, reset the core operating parameters according to the new profile specifications, and complete the angle adjustment and locking of the cutting turntable 3 before proceeding with subsequent processing operations. After a single processing operation or continuous processing is completed, operators should promptly open the flip-top protective cover on the base 2 to clean the cutting debris from the saw blade, cutting turntable 3, base plate 7, extension plate 8, and other components, removing debris from the equipment surface to ensure the normal operation of the equipment and prepare for the next processing operation.

[0064] The aluminum alloy door and window profile irregular section processing equipment and its control method of the present invention achieve constant pressure flexible support for the weak rigidity area inside the openable inner groove profile through the internal gas support device. Combined with external downward positioning and lateral guiding constraints, it fundamentally solves the problems of support failure, cutting deformation and insufficient precision when processing this type of profile by traditional cutting equipment, which greatly improves the cutting accuracy and processing quality of the profile. At the same time, the structural design of the equipment is adapted to the processing needs of openable inner groove profiles of various specifications, without the need to replace a large number of rigid parts. It has strong versatility. The supporting control method has clear steps and is easy to operate. The various mechanisms work together in an orderly manner, which effectively improves the operation efficiency of profile processing. It takes into account both processing accuracy and production efficiency, and has significant industrial application value and market promotion prospects.

Claims

1. An aluminum alloy door and window profile irregular section processing equipment, comprising a cutting table and conveying roller groups (1) arranged on both sides of the cutting table; the cutting table includes a base (2), a cutting turntable (3) arranged on the base (2) capable of adjusting the cutting angle and realizing profile cutting, and a support frame (4) fixedly arranged on the base (2) and located above the cutting turntable (3) for guiding the profile; the support frame (4) is provided with a pressing positioning mechanism (5) for pressing the profile onto the cutting turntable (3); Its features are: It also includes two sets of internal air support devices (6) symmetrically arranged on the support frame (4) on both sides of the cutting turntable (3). The internal air support device (6) includes a sealing mechanism, a pressure detection component and an air inflation component. The sealing mechanism can seal the section of the profile close to the saw blade on the cutting turntable (3) so that a relatively closed support cavity is formed inside the profile. The pressure detection component can collect real-time pressure data in the support cavity, and the inflation component can inject compressed gas into the support cavity according to the feedback real-time pressure data so that the support cavity maintains a preset constant pressure; the compressed gas can apply a pressing force to the profile towards the guide surface on the backrest (4) while supporting the side wall of the profile.

2. The aluminum alloy door and window profile irregular section processing equipment according to claim 1, characterized in that: The sealing mechanism includes an L-shaped substrate (7) and a mounting frame for mounting the substrate (7) and driving the substrate (7) to move in the up-down and back-forward directions; an extension plate (8) is provided on both sides of the substrate (7), and the extension plate (8) can be adjusted in position along the length direction of both sides of the substrate (7) under the drive of the telescopic drive member (9) to form a length adjustment of the two closed sides of the substrate (7).

3. The aluminum alloy door and window profile irregular section processing equipment according to claim 2, characterized in that: The substrate (7) has slots (10) on both sides of the back of the support cavity. The extension plate (8) is installed in the slots (10) and slides with both sides of the substrate (7). The telescopic drive (9) is an electric telescopic rod or a pneumatic telescopic rod that is provided on the back of both sides of the substrate (7) and whose telescopic end is connected to the extension plate (8).

4. The aluminum alloy door and window profile irregular section processing equipment according to claim 3, characterized in that: The end of the elongated plate (8) on the side of the substrate (7) perpendicular to the length direction of the profile is provided with a groove adaptive part (11) made of flexible bristles.

5. The aluminum alloy door and window profile irregular section processing equipment according to claim 4, characterized in that: The inner surface of the side of the substrate (7) parallel to the length direction of the profile is provided with a first mounting groove (12) and a second mounting groove (13); the pressure detection component is a pressure sensor (14) provided in the first mounting groove (12); the inflation assembly includes an inflation head (15) provided in the second mounting groove (13) and perpendicular to the length direction of the profile, and a high-pressure gas cylinder (16) installed on the support frame (4) and communicating with the inflation head (15); the outlet of the high-pressure gas cylinder (16) is connected to the inflation head (15) through an inflation pipe, and an air intake solenoid valve is provided on the inflation pipe; the air replenishment port of the high-pressure gas cylinder (16) is connected to the air compressor through an air replenishment pipe.

6. The aluminum alloy door and window profile irregular section processing equipment according to claim 5, characterized in that: The mounting frame includes a front and rear telescopic frame (17) fixedly mounted on the top of the support frame (4) and arranged in the front and rear direction, and a lifting screw pair (18) mounted on the cantilever end of the front and rear telescopic frame (17); the front and rear telescopic frame (17) is driven by a linear motor (20), and the lifting screw pair (18) is driven by a lifting motor (21); the base plate (7) is detachably connected to the lifting block of the lifting screw pair (18) via a connecting platform (19).

7. The aluminum alloy door and window profile irregular section processing equipment according to claim 6, characterized in that: The profile is a profile with an open inner groove, and the profile is a U-shaped profile, a C-shaped profile, or a mountain-shaped profile.

8. The aluminum alloy door and window profile irregular section processing equipment according to claim 1, characterized in that: The cutting turntable (3) is a bottom-out cutting turntable.

9. The aluminum alloy door and window profile irregular section processing equipment according to claim 1, characterized in that: The base (2) is provided with a flip-top protective cover, and the rear side of the protective cover is hinged to the base (2).

10. The control method for the aluminum alloy door and window profile irregular section processing equipment according to any one of claims 2-7, characterized in that, Includes the following steps: S1 Equipment Initialization and Parameter Preset: Start the equipment and complete the power-on self-test of each mechanism to confirm normal operation and communication; according to the specifications, wall thickness and preset cutting angle of the profile to be processed, set the core parameters in the control system, including the motion stroke of the sealing mechanism, the constant pressure value of the support cavity, the pressing pressure of the pressing positioning mechanism (5), the rotation speed and feed speed of the cutting turntable (3), and simultaneously complete the cutting angle adjustment and locking of the cutting turntable (3); S2 Profile Conveying and Station Alignment: Place the profile to be processed on the conveying roller group (1), start the roller group to convey the profile to the cutting turntable (3) processing station, so that the end of the profile to be cut is precisely aligned with the saw blade cutting position, and complete the initial alignment; S3 internal air support device sealing operation: Start the internal air support device (6) on both sides of the cutting turntable (3), control the system to drive the mounting frame of the sealing mechanism to drive the base plate (7), complete the spatial fine adjustment in the front-back and up-down directions, so that the base plate (7) is initially attached to the inner groove cavity wall of the profile; then start the telescopic drive (9), adjust the extension length of the extension plate (8), fill the gap through the groove self-adaptive part (11) of the end flexible brush, and seal the cutting section of the profile close to the saw blade to form a relatively sealed support cavity; S4 support cavity constant pressure air inflation support: After the cavity is sealed, start the inflation component to open the air intake solenoid valve and inject compressed gas into the support cavity; the pressure sensor (14) of the pressure detection component collects the cavity pressure in real time and feeds it back to the control system. The pressure loss in the cavity is replenished by continuous air replenishment, so that the pressure of the support cavity is always maintained at the preset constant value. The air pressure is used to realize the flexible support of the thin wall of the profile and form a lateral clamping force towards the guide surface of the backrest (4); S5 Press Positioning Mechanism Locking: After the pressure inside the support cavity stabilizes to the preset value, start the press positioning mechanism (5) on the backrest (4) and slowly descend to press the profile onto the bearing surface of the cutting turntable (3) to complete the triple posture locking of the profile external pressing + internal constant pressure support + lateral adhesion. S6 profile precision cutting and process pressure holding: issue a cutting command, start the cutting turntable (3), drive the saw blade to cut the profile according to the preset parameters; during the cutting process, keep the air filling component to continuously replenish air, the pressure detection component to monitor in real time, and the pressure positioning mechanism (5) to keep the pressure in a tight state to ensure that the profile is not deformed or moved. S7 Processing Completed and Mechanism Reset: After the saw blade finishes cutting, it resets and stops. First, the air-filling assembly is turned off, allowing the support cavity to naturally depressurize to normal pressure. Then, the extension plate (8) of the sealing mechanism is driven to retract, and the base plate (7) returns to its position, separating from the inner groove of the profile. Subsequently, the lower positioning mechanism (5) resets upward, releasing the external pressure. The conveying roller group (1) is started to transport the cut profile to the unloading station, completing one processing cycle. S8 Cyclic Processing and Equipment Cleaning: When processing profiles of the same specification continuously, repeat steps 2-7 directly; when changing profile specifications, return to step 1 to reset the preset parameters; after a single processing is completed, clean the saw blade, cutting turntable (3) and cavity sealing mechanism debris in time to ensure smooth subsequent operation of the equipment.

Images