A polishing device for aluminum alloy door and window frame cutout

Abstract

This application provides a grinding device for the cut edges of aluminum alloy door and window frames, belonging to the field of window frame grinding technology. It includes a machine body, with a bracket hinged to one side of the machine body. A second linear actuator is disposed between the bracket and the machine body, driving the bracket to rotate around its hinge point with the machine body. A support plate is disposed on the bracket, and a clamping assembly is rotatably connected to the upper surface of the support plate for clamping and positioning the workpiece. A second motor is disposed at the bottom of the support plate for rotating the clamping assembly. A displacement assembly is disposed on the bracket, driving the support plate to move linearly along the length of the bracket. After grinding one end of the workpiece's cut edge, this device can switch to grinding the other end's cut edge without requiring secondary disassembly and repositioning of the workpiece, thus improving overall processing efficiency.

Description

Technical Field

[0001] This application relates to the field of window frame grinding technology, specifically to a grinding device for the cut edges of aluminum alloy door and window frames. Background Technology

[0002] Aluminum alloy doors and windows are a new type of building doors and windows made of high-strength aluminum alloy profiles as frames, precisely processed, sealed, and assembled with hardware accessories. They have core advantages such as lightweight, high strength, and corrosion resistance. They can achieve excellent thermal insulation and sound insulation effects by combining thermally broken aluminum structures with double-glazed windows, reducing energy consumption. They can also present rich colors and textures with different surface treatment processes, making them suitable for various architectural styles. Their structural design is flexible, allowing for multiple opening methods such as casement windows, sliding windows, and casement doors. They also feature waterproof sealing, strong wind pressure resistance, long service life, and convenient maintenance, and are used in various types of buildings such as residential buildings, office buildings, and commercial complexes.

[0003] The cutting process of aluminum alloy door and window frames is the core step in profile processing. First, the aluminum alloy profiles must be straightened, positioned, and marked according to the design dimensions of the doors and windows. Then, high-precision equipment such as CNC double-head saws and angle saws are used to complete fixed-length and fixed-angle cuts along the marked lines (commonly 45° splicing angles and 90° right-angle cuts). Edge grinding is a crucial follow-up process after cutting, its core purpose being to remove burrs and sharp edges from the cut. Currently, edge grinding of aluminum alloy door and window frames mainly relies on manual handheld angle grinders, flap wheels, or sandpaper for rough and fine grinding, sometimes supplemented by simple mechanical grinding. This method suffers from low grinding efficiency, high labor intensity, and the potential for over-grinding or incomplete grinding due to variations in manual operation.

[0004] Referring to Chinese patent document CN218904664U, entitled "A Grinding Device for Cutting Edges of Aluminum Alloy Door and Window Frames," the device includes a support plate. A first electric push rod is fixedly connected to both the front and rear ends of the top right side of the support plate. A movable plate is fixedly connected to the output end of the first electric push rod. A movable frame is slidably connected to the top of the movable plate, and a fixing block is fixedly connected to the right side of the top of the movable plate. This patent document, by setting the first electric push rod, adjusts the height of the movable plate, thereby adjusting the height of the first and second clamping blocks. This facilitates control of the grinding position of the window frame, replacing manual grinding of the workpiece and improving the stability of the workpiece during grinding.

[0005] Aluminum alloy door and window frames are typically assembled from multiple aluminum alloy profile components, and both ends of each component require grinding. Regarding the aforementioned technical solution, after one end of the component's cut is positioned and ground, the workpiece must be disassembled from the equipment, flipped, and then repositioned before the other end can be ground. This process requires secondary disassembly and repositioning of the workpiece, which not only consumes considerable time but also easily leads to cumulative errors due to repeated positioning. This reduces overall processing efficiency and may affect the component assembly accuracy and product consistency. Summary of the Invention

[0006] In view of this, this application provides a grinding device for the cutting edge of aluminum alloy door and window frame, which is mainly used to solve the problem that in the prior art, after grinding one end of the aluminum alloy door and window frame cutting edge grinding device, it is necessary to disassemble, flip the workpiece and reposition it twice before grinding the other end. This is not only time-consuming, but also prone to cumulative errors, affecting processing efficiency.

[0007] To address the aforementioned technical problems, this application provides a grinding device for the cut edges of aluminum alloy door and window frames, comprising a machine body, a bracket hinged to one side of the machine body, a second linear actuator disposed between the bracket and the machine body, the second linear actuator driving the bracket to rotate around its hinge point with the machine body; a support plate disposed on the bracket, a clamping assembly rotatably connected to the upper surface of the support plate, the clamping assembly being used to clamp and position the workpiece; a second motor disposed at the bottom of the support plate for driving the clamping assembly to rotate; a displacement assembly disposed on the bracket, the displacement assembly driving the support plate to move linearly along the length direction of the bracket; an angle adjustment assembly disposed between the clamping assembly and the support plate, the angle adjustment assembly being used to adjust the angle of the clamping assembly so that the workpiece's cut surface to be processed remains parallel to the machine body.

[0008] By adopting the above technical solution, the angle of the clamping component can be adjusted using the angle adjustment component to keep the cut surface of the workpiece parallel to the machine body. Then, the workpiece is fixed by the clamping component, and the displacement component drives the carrier plate to move the workpiece linearly, completing the grinding operation on one end of the workpiece. After grinding one end is completed, the second linear actuator drives the bracket to flip downwards, tilting the carrier plate and workpiece to expand the working space. Then, the second motor drives the workpiece to rotate 180° through the clamping component, switching the other end of the cut to the processing station. Finally, the bracket returns to its original position, allowing for direct grinding of the other end. This solution eliminates the need for secondary disassembly and assembly of the workpiece, making operation convenient and labor-saving. It not only helps improve processing efficiency but also reduces processing errors caused by repeated disassembly and assembly, ensuring component processing accuracy and product consistency.

[0009] Optionally, the machine body is fixedly connected to two ends on the side near the bracket. The stop bars are inclined on the machine body and located below the bracket. When the bracket is flipped downward to a preset angle, the end of the stop bar abuts against the bracket to limit the flipping of the bracket.

[0010] By adopting the above technical solution, when the bracket is flipped downward to the preset angle, it will abut against the end of the stop bar and generate an impact, thereby generating vibration; this vibration can cause the residual debris inside the workpiece to fall off and fall, eliminating the need for manual secondary dumping and cleaning, effectively improving the ease of use and labor-saving operation.

[0011] Optionally, the bracket is internally fitted with a flap, which is coaxially hinged to the bracket on the machine body; a support block is provided at the bottom of the bracket, and an electromagnet is provided on the support block; the displacement component and the bearing plate are both provided on the flap, and the flap has movable holes to provide clearance space for the movement of the second motor.

[0012] By adopting the above technical solution, the flap and the bracket can rotate relative to each other. In the initial state, the two rotate synchronously with the second linear drive until the flap comes into contact with the stop bar. At this time, the bracket continues to rotate, while the flap separates from the bracket due to the blocking effect of the stop bar. After the flap comes into contact with the stop bar, it bounces under the impact force, further amplifying the vibration intensity, thereby ensuring that the residual debris inside the workpiece is fully dislodged and discharged.

[0013] Optionally, the end of the stop bar is provided with an insertion hole, a movable rod is movably inserted into the insertion hole, one end of the movable rod is fixedly connected to a contact block, and a second spring is sleeved on the outside of the movable rod, with the two ends of the second spring abutting against the stop bar and the contact block respectively.

[0014] By adopting the above technical solution, when the flap and the contact block come into contact, the second spring is compressed and stores elastic potential energy; when the flap flips to the maximum preset angle, the second spring releases elastic potential energy, pushes the contact block to drive the flap to reset in the opposite direction, thereby further enhancing the vibration intensity of the flap and the workpiece, and ensuring that the internal debris of the workpiece is discharged more thoroughly.

[0015] Optionally, the clamping assembly includes a clamping plate, a kit, a pressure plate, a rod, a side plate, and a first linear driver; two kits are provided, symmetrically arranged on both sides of the clamping plate; two rods are provided, symmetrically arranged on both sides of the pressure plate, with the end of the rod away from the pressure plate passing through the kit and fixedly connected to the side plate; the first linear driver is located in the middle of the clamping plate, and its output end is fixedly connected to the side plate.

[0016] Optionally, a positioning block is fixedly connected to the top of the side of the pressure plate near the material clamping plate, and the bottom surface of the positioning block is an inclined surface.

[0017] By adopting the above technical solution, as the pressure plate moves closer to the clamping plate, the inclined bottom surface of the positioning block will gradually come into contact with the top of the workpiece and form a squeezing force; the inclined structure can apply clamping force to the workpiece from multiple dimensions, effectively improving the stability and reliability of workpiece clamping and preventing workpiece displacement during processing.

[0018] Optionally, the angle adjustment assembly includes a disc, a base post, limiting holes, and a locking element; the clamping plate is rotatably connected to the upper surface of the disc, the base post is fixed to the bottom surface of the disc, and the output shaft of the second motor is drivenly connected to the base post; the disc is rotatably mounted on a support plate, a fixing frame is fixedly connected to the bottom of the support plate, and the second motor is fixedly mounted on the bottom of the fixing frame; there are multiple limiting holes, which are opened on the disc along an arc-shaped trajectory; the locking element is set on the clamping plate and is used to cooperate with the limiting holes to lock and fix the angle of the clamping assembly after adjustment.

[0019] Optionally, the locking component includes a positioning rod, a first spring, and an end block; the positioning rod is movably inserted through one side of the clamping plate, the first spring is sleeved on the outside of the positioning rod, the end block is fixedly connected to the top of the positioning rod, and the positioning rod is adapted to the limiting hole.

[0020] Optionally, the displacement assembly includes a slide rail, a lead screw, a first motor, a slider, and a base block; there are two slide rails, which are symmetrically arranged on the flip plate, and the slider is fixedly connected to the bottom of the support plate and slides in cooperation with the slide rail; the lead screw is rotatably connected to the flip plate, the output end of the first motor is drivenly connected to the lead screw, and the base block is fixedly connected to the bottom of the support plate, with the lead screw threadedly connected to the base block.

[0021] Optionally, there are four sliders, which are rectangularly distributed at the bottom of the support plate; the four sliders are divided into two groups, each group containing two sliders, and each group of sliders corresponds to a slide rail for sliding cooperation.

[0022] By adopting the above technical solution, the force distribution at the bottom of the bearing plate can be made more uniform, effectively offsetting the eccentric load generated during the movement, improving the stability and guiding accuracy of the bearing plate when running along the slide rail, and thus ensuring the processing accuracy of the workpiece cutting grinding.

[0023] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Through the coordinated operation of the flip-up bracket, clamping components, and the second motor, after grinding one end of the workpiece's cut, there is no need for secondary disassembly and repositioning of the workpiece. Simply rotating the workpiece 180° via the second motor switches to grinding the other end's cut. This design is convenient and labor-saving, not only shortening process changeover time and improving overall processing efficiency, but also avoiding cumulative positioning errors caused by repeated disassembly and assembly. This ensures the cutting accuracy of the aluminum alloy door and window frame components, thereby guaranteeing the splicing accuracy and product quality consistency of the door and window frames.

[0024] 2. Through the cooperation between the flip-up bracket, the flip plate and the stop bar, the flip plate and the stop bar collide and generate vibration during the process of switching the processing end of the workpiece. This vibration can cause the grinding debris remaining inside the workpiece to fall off and be discharged quickly, eliminating the need for manual secondary cleaning. This simplifies the operation process and improves the convenience of using the equipment and the continuity of processing.

[0025] 3. By setting the angle adjustment component, the installation angle of the clamping component can be flexibly adjusted according to the preset angle requirements of the aluminum alloy door and window frame component cut. This ensures that the cut of the component to be processed is always parallel to the grinding mechanism of the machine body. Without changing the special fixture or adjusting the overall layout of the equipment, it can adapt to the grinding needs of door and window frame components with different cut angles, thus broadening the scope of application and improving the versatility and practicality of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a grinding device for cutting edges of aluminum alloy door and window frames according to this application; Figure 2 This is a top view of the bracket, flap, and clamping components in this application. Figure 3 This is a schematic diagram of the left-side structure of the bracket and clamping assembly in this application; Figure 4 This is a schematic diagram of the overall structure of the clamping components and the carrier plate in this application; Figure 5 This is a cross-sectional structural diagram of the material handling plate and the disc in this application; Figure 6 This is a cross-sectional structural diagram of the bearing plate, the clamping plate, and the disc in this application; Figure 7 This is a cross-sectional structural diagram of the stop bar and the movable rod in this application; Figure 8 This is a schematic diagram of the structure of the disk and the limiting hole in this application; Figure 9 This is a schematic diagram of the flap and bracket structure for tilting chip removal in this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Bracket; 21. Flip plate; 211. Slide rail; 212. Lead screw; 213. First motor; 214. Movable hole; 22. Support block; 3. Bearing plate; 31. Disc; 311. Bottom column; 312. Limiting hole; 32. Material clamping plate; 321. Kit; 33. Pressure plate; 331. Insert rod; 332. Side plate; 333. First linear actuator; 334. Positioning block; 34. Slider; 35. Bottom block; 36. Fixing frame; 361. Second motor; 37. Positioning rod; 371. First spring; 372. End block; 4. Second linear actuator; 5. Stop bar; 51. Movable rod; 52. Contact block; 53. Second spring; 54. Insertion hole; 6. Electromagnet. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 1-9 The technical solutions of the embodiments of this application are clearly and completely described herein. All other embodiments obtained by those skilled in the art based on the described embodiments are within the scope of protection of this application.

[0029] Reference Figure 1 , Figure 2 and Figure 3 This embodiment provides a grinding device for the cut edges of aluminum alloy door and window frames, including a body 1, a bracket 2, a second linear actuator 4, a bearing mechanism, and a displacement component. The body 1 serves as the core bearing and control base of the device, including a shell, a grinding mechanism, and a control system: the shell is the basic bearing structure of the device, used to provide a stable installation reference for the other functional components, and has a processing opening on one side, through which the cut edge of the workpiece to be ground is connected to the working end of the grinding mechanism; the grinding mechanism is used to perform grinding processing on the cut edge of the workpiece; the control system is used to program and control the motion trajectory, grinding speed, feed rate, and other processing parameters and process sequence of the device to achieve automated grinding operation. The bracket 2 is hinged to the side of the housing near the machining opening. Both the bearing mechanism and the displacement assembly are mounted on the bracket 2. Two second linear actuators 4 are symmetrically arranged between the bracket 2 and the machine body 1. The tail of the actuator's cylinder is hinged to the machine body 1, and the end of its output shaft is hinged to the bottom of the bracket 2, used to drive the bracket 2 to rotate around its hinge point with the machine body 1. The core function of the bearing mechanism is to bear, position, and switch the end of the workpiece. Specifically, after grinding one end of the workpiece, it drives the workpiece to rotate 180°, switching the un-grinded end to the machining station. The displacement assembly drives the bearing mechanism to perform linear feed motion along the length of the bracket 2, cooperating with the grinding action of the grinding mechanism to complete the grinding of the workpiece end cut. It should be noted that the grinding mechanism and control system both adopt conventional existing technology in this field, and their specific structures, transmission relationships, and working principles will not be described in detail here.

[0030] Among them, reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 The supporting mechanism includes a support plate 3, a clamping assembly, a second motor 361, and an angle adjustment assembly. The support plate 3 is mounted on top of the displacement assembly. The clamping assembly is rotatably mounted on the upper surface of the support plate 3 via bearings, and its core function is to achieve reliable clamping and precise positioning of the workpiece. The second motor 361 is located at the bottom of the support plate 3, and its output shaft is connected to the clamping assembly for transmission. After the cut end of the workpiece is ground, it drives the clamping assembly to rotate the workpiece 180°, so that the unground cut end is switched to the processing position. The angle adjustment assembly is set between the clamping assembly and the support plate 3, and is used to flexibly adjust the installation angle of the clamping assembly to ensure that the cut surface of the workpiece to be processed always remains parallel to the machine body 1, thus ensuring grinding accuracy.

[0031] Specifically, the clamping assembly includes a clamping plate 32, a kit 321, a pressure plate 33, a insertion rod 331, a side plate 332, and a first linear actuator 333. The clamping plate 32 has an L-shaped plate structure. There are two kits 321, which are symmetrically fixedly connected to both sides of the clamping plate 32. The top surface of the kits 321 is flush with the upper surface of the clamping plate 32. This design can increase the contact area with the workpiece and improve the clamping stability without interfering with the workpiece's load-bearing and positioning. There are two insertion rods 331, which are symmetrically fixedly connected to both sides of the pressure plate 33. The end of the insertion rod 331 away from the pressure plate 33 passes through the kit 321 and is fixedly connected to the side plate 332. The first linear actuator 333 is fixedly installed in the middle of the side of the clamping plate 32 away from the pressure plate 33. Its output end is fixedly connected to the side plate 332 and is used to drive the pressure plate 33 to move along the axial direction of the insertion rod 331.

[0032] Specifically, the angle adjustment assembly includes a disc 31, a base post 311, limiting holes 312, and a locking element. A clamping plate 32 is rotatably connected to the upper surface of the disc 31 via bearings. The base post 311 is coaxially and fixedly connected to the bottom surface of the disc 31. The output shaft of the second motor 361 is drively connected to the base post 311. The disc 31 is rotatably mounted on a support plate 3. A fixing frame 36 is fixedly connected to the bottom of the support plate 3, and the second motor 361 is fixedly mounted on the bottom of the fixing frame 36. Five limiting holes 312 are evenly distributed along an arc-shaped trajectory on the disc 31. The locking element is located on the clamping plate 32 and is used to cooperate with the limiting holes 312 to lock and fix the angle of the clamping assembly after adjustment. The locking mechanism includes a positioning rod 37, a first spring 371, and an end block 372. The positioning rod 37 is movably inserted through one side of the clamping plate 32. The first spring 371 is sleeved on the outside of the positioning rod 37. The end block 372 is fixedly connected to the top of the positioning rod 37. The positioning rod 37 is adapted to the limiting hole 312. One end of the first spring 371 is fixedly connected to the end block 372, and the other end is fixedly connected to the clamping plate 32. The positioning rod 37 is driven to insert into the limiting hole 312 by the spring force to achieve locking. It should be noted that the number of limiting holes 312 can be flexibly adjusted according to actual processing needs to adapt to different angle cutting and grinding scenarios.

[0033] Due to the differences in the structural form of aluminum alloy door and window frames, the cutting angles of their components also vary. During grinding operations, it is necessary to ensure that the workpiece cutting edge remains parallel to the grinding mechanism of machine body 1 to guarantee grinding accuracy. In actual operation, the locking device is released from locking the clamping plate 32, and then the angles of the clamping plate 32 and pressure plate 33 are adjusted around the axis of disc 31. After adjusting to the angle suitable for the workpiece cutting edge, the locking device is used to position the adjusted clamping assembly.

[0034] The workpiece to be processed is placed between the clamping plate 32 and the pressure plate 33. The first linear actuator 333 is activated, and its output pushes the side plate 332 to move the insertion rod 331 and the pressure plate 33 toward the clamping plate 32, reducing the distance between them to clamp and fix the workpiece. Then, driven by the displacement component, the bearing plate 3 drives the workpiece to make a linear feed motion along the bracket 2, and cooperates with the grinding mechanism to complete the grinding operation of one end of the workpiece. After the grinding of one end of the workpiece is completed, the second linear actuator 4 drives one side of the bracket 2 to flip downward to expand the rotation space of the workpiece. Then, the second motor 361 drives the bottom column 311 to drive the disc 31, the clamping component and the workpiece to rotate 180° synchronously, so that the other end of the workpiece is switched to the processing position. Finally, the second linear actuator 4 drives the bracket 2 to reset, and the grinding mechanism can be started to grind the other end of the workpiece. This processing flow eliminates the need for secondary disassembly and repositioning of the workpiece, avoiding time losses caused by secondary disassembly and repositioning, effectively improving overall processing efficiency, while avoiding cumulative errors caused by repeated positioning, ensuring the processing accuracy of the workpiece cut and product consistency.

[0035] Among them, reference Figure 1 , Figure 2 and Figure 4 The displacement assembly includes a slide rail 211, a lead screw 212, a first motor 213, a slider 34, and a base block 35. Two slide rails 211 are provided, symmetrically arranged. The slider 34 is fixedly connected to the bottom of the support plate 3 and slides in cooperation with the slide rail 211. The output end of the first motor 213 is connected to the lead screw 212 via a coupling. The base block 35 is fixedly connected to the bottom of the support plate 3, and the lead screw 212 is threadedly connected to the base block 35. Notably, four sliders 34 are provided, arranged in a rectangular array on the bottom of the support plate 3. The four sliders 34 are divided into two groups, each group containing two sliders 34. Each group of sliders 34 slides in cooperation with a corresponding slide rail 211, making the force distribution on the bottom of the support plate 3 more uniform and improving its operational stability.

[0036] After the workpiece is clamped and fixed, the first motor 213 is started, and its output shaft drives the lead screw 212 to rotate around its own axis through the coupling. Since the bottom block 35 is threadedly engaged with the lead screw 212, and the slider 34 and the slide rail 211 form a cooperative guiding and limiting effect, the rotational motion of the lead screw 212 can be converted into the linear feed motion of the support plate 3. During this process, the cooperation structure between the slide rail 211 and the slider 34 can constrain the movement trajectory of the support plate 3, ensuring that the support plate 3 moves smoothly along the slide rail 211.

[0037] Among them, reference Figure 1 and Figure 3 Both ends of the machine body 1 near the bracket 2 are fixedly connected to a stop bar 5. The stop bar 5 is installed obliquely on the machine body 1 and located below the bracket 2. When the bracket 2 is flipped downward to a preset angle, the end of the stop bar 5 abuts against the bracket 2 to limit the flipping stroke of the bracket 2.

[0038] In the cutting and grinding process of aluminum alloy door and window frame components, grinding debris easily remains in the internal cavity of the workpiece, which traditionally requires manual emptying and cleaning. In this embodiment, the stop bar 5 is arranged on the flipping trajectory of the bracket 2. When the bracket 2 flips to a preset angle and abuts against the stop bar 5, the bracket 2 causes the workpiece to vibrate under the action of impact inertia. Combined with the tilted posture of the workpiece with one end facing down at this time, the residual debris in the internal cavity of the workpiece can be quickly dislodged and discharged. This design eliminates the need for secondary manual cleaning of the workpiece, simplifies the operation process, improves the convenience and labor-saving of equipment use, and avoids the impact of residual debris on subsequent processing.

[0039] Among them, reference Figure 1 , Figure 2 and Figure 9The bracket 2 has a hinged flap 21 inside, which is coaxially hinged to the bracket 2 on the body 1. Multiple support blocks 22 are fixedly connected to the bottom of the bracket 2 to support the bottom of the flap 21. Electromagnets 6 are mounted on the support blocks 22. The flap 21 is made of carbon steel. The displacement component and the support plate 3 are both mounted on the top surface of the flap 21. The flap 21 has a movable hole 214 to provide clearance for the movement of the second motor 361. Specifically, the slide rail 211 is fixedly installed on the top surface of the flap 21. The movable hole 214 on the flap 21 provides clearance for the second motor 361 as it moves with the support plate 3, ensuring uninterrupted movement. Specifically, the slide rail 211 of the displacement component is fixedly mounted on the top surface of the flap 21, the lead screw 212 is rotatably supported on the flap 21, and the first motor 213 is fixedly mounted on one end of the flap 21. In this embodiment, the bracket 2 adopts a rectangular frame structure, the flip plate 21 is adapted to be nested inside the bracket 2, and the support block 22 provides rigid support to the bottom of the flip plate 21, which can ensure that the bracket 2 and the flip plate 21 maintain consistent movement during synchronous flipping.

[0040] To further improve chip removal, during the workpiece grinding stage, the electromagnet 6 generates electromagnetic attraction after being energized. Under the action of electromagnetic attraction, the flap 21 fits tightly against the bottom of the bracket 2, ensuring the stability of the bearing mechanism during workpiece grinding and avoiding the impact of vibration on machining accuracy. When the workpiece needs to switch machining ends, the power supply to the electromagnet 6 is cut off, and the electromagnetic attraction disappears. During the process of the second linear actuator 4 driving the bracket 2 to rotate the flap 21 downward, the flap 21 first comes into contact with the stop bar 5 and stops rotating, while the bracket 2 continues to rotate downward under the driving force, causing the flap 21 to separate from the bracket 2. At this time, the flap 21 bounces slightly under the action of impact inertia, further enhancing the vibration intensity, thereby promoting the discharge of residual chips inside the workpiece.

[0041] Additionally, refer to Figure 3 and Figure 7 The end of the stop rod 5 is provided with an insertion hole 54, and a movable rod 51 is movably inserted into the insertion hole 54. One end of the movable rod 51 is fixedly connected to a contact block 52, and a second spring 53 is sleeved on the outside of the movable rod 51. The two ends of the second spring 53 abut against the stop rod 5 and the contact block 52 respectively.

[0042] In this embodiment, when the bracket 2 drives the flip plate 21 to flip downward to a preset position, the bottom of the flip plate 21 abuts against the contact block 52. As the bracket 2 continues to flip, the flip plate 21 pushes the movable rod 51 to move axially along the insertion hole 54 through the contact block 52. The second spring 53 is compressed and stores elastic potential energy. When the flip plate 21 flips with the bracket 2 to the maximum stroke angle, the second spring 53 releases the stored elastic potential energy, pushing the contact block 52 to drive the flip plate 21 to produce a reverse reset motion. During this process, the flip plate 21 drives the workpiece to form a small range of reciprocating swing, further enhancing the vibration effect and ensuring that the residual debris inside the workpiece is fully dislodged and discharged.

[0043] Reference Figure 4 and Figure 5 A positioning block 334 is fixedly connected to the top of the side of the pressure plate 33 near the material clamping plate 32, and the bottom surface of the positioning block 334 is an inclined surface.

[0044] As the pressure plate 33 moves closer to the clamping plate 32, the inclined bottom surface of the positioning block 334 gradually contacts the top of the workpiece and forms a squeezing force. This inclined structure can apply clamping force to the workpiece from multiple dimensions, effectively improving the stability and reliability of workpiece clamping, preventing the workpiece from shifting or shaking due to force during grinding, and ensuring grinding accuracy.

[0045] It should be noted that the first linear actuator 333 and the second linear actuator 4 used in the above embodiments can both be linear drive components such as cylinders or hydraulic cylinders.

[0046] The implementation principle of a grinding device for cutting edges of aluminum alloy door and window frames according to an embodiment of this application is as follows: For aluminum alloy door and window frame components with different cutting angles, the clamping posture is first calibrated by adjusting the angle: the end block 372 of the locking component is pulled upward, which drives the positioning rod 37 to disengage from the limiting hole 312 on the disc 31, releasing the angle lock on the clamping plate 32; the clamping plate 32 and the pressure plate 33 are rotated around the axis of the disc 31 to make the clamping surface of the clamping component match the cutting angle of the workpiece to be processed, ensuring that the cutting is parallel to the grinding mechanism of the machine body 1; after the end block 372 is released, the first spring 371 resets and drives the positioning rod 37 to insert into the corresponding limiting hole 312, completing the angle fixation of the clamping component.

[0047] The workpiece to be processed is placed between the clamping plate 32 and the pressure plate 33. The first linear driver 333 is started, and its output end pushes the side plate 332 to move the insertion rod 331 and the pressure plate 33 toward the clamping plate 32. During the movement of the pressure plate 33, the inclined bottom surface of the positioning block 334 contacts the top edge of the workpiece and generates progressive extrusion. Combined with the clamping action of the clamping plate 32 and the pressure plate 33, the workpiece is stably positioned, avoiding displacement or shaking during the grinding process.

[0048] After the workpiece is clamped and fixed, the displacement assembly is activated: the first motor 213 drives the lead screw 212 to rotate through the coupling. Since the bottom block 35 is threadedly engaged with the lead screw 212, and the slider 34 forms a sliding fit with the slide rail 211, the rotational motion of the lead screw 212 is converted into the linear feed motion of the support plate 3. The support plate 3 drives the workpiece to move smoothly along the slide rail 211, so that one end of the workpiece cut contacts the working end of the grinding mechanism through the processing opening of the machine body 1. The control system controls the grinding mechanism to run according to preset parameters to complete the grinding process of the cut end. During this process, the electromagnet 6 on the bottom support block 22 of the bracket 2 is energized to generate electromagnetic attraction, so that the flip plate 21 and the bracket 2 fit tightly together, ensuring the installation stability of the support mechanism and avoiding the impact of grinding vibration on the processing accuracy.

[0049] After the end of the cut is polished, the end switching process is started: First, the power supply to the electromagnet 6 is cut off, and the electromagnetic attraction disappears; the second linear actuator 4 drives the bracket 2 to rotate the flap 21 downward. When the flap 21 rotates with the bracket 2 to the preset angle, its bottom abuts against the contact block 52 at the end of the stop rod 5. The bracket 2 continues to rotate under the driving force, while the flap 21 stops moving due to the obstruction of the stop rod 5, and the two separate relative to each other; when the flap 21 abuts against the contact block 52, it pushes the movable rod 51 to move along the insertion hole 54 of the stop rod 5, so that the second spring 53 is compressed and stores elastic potential energy; then the second spring 53 releases elastic potential energy, pushes the contact block 52 to drive the flap 21 to move in the opposite direction, forming a small range of reciprocating swing. Combined with the tilted posture of one end of the workpiece facing down, the residual debris inside the workpiece is shaken off and discharged.

[0050] After the debris is discharged, the second motor 361 starts, and its output shaft drives the disc 31, clamping assembly and workpiece to rotate 180° synchronously through the bottom column 311, so that the other end of the workpiece that has not been polished is switched to the processing station; then the second linear driver 4 drives the bracket 2 to flip up and reset, completing the end switching.

[0051] After the bracket 2 is reset, the displacement component is restarted, driving the bearing plate 3 to feed the workpiece linearly along the slide rail 211. The grinding mechanism runs according to the preset parameters to grind the cut at the other end of the workpiece. After the processing is completed, the first linear driver 333 reverses its action, driving the pressure plate 33 away from the clamping plate 32, releasing the clamping of the workpiece, and the processed workpiece can be taken out.

[0052] The above description is the preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles described in this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A grinding device for cutting edges on aluminum alloy door and window frames, comprising a body (1), characterized in that: A bracket (2) is hinged to one side of the body (1), and a second linear actuator (4) is provided between the bracket (2) and the body (1). The second linear actuator (4) is used to drive the bracket (2) to rotate around the hinge point between it and the body (1). The bracket (2) is provided with a support plate (3), and a clamping assembly is rotatably connected to the upper surface of the support plate (3). The clamping assembly is used to clamp and position the workpiece. A second motor (361) is provided at the bottom of the support plate (3) to drive the clamping assembly to rotate. A displacement assembly is provided on the bracket (2) to drive the support plate (3) to move linearly along the length of the bracket (2). An angle adjustment component is provided between the clamping assembly and the carrier plate (3). The angle adjustment component is used to adjust the angle of the clamping assembly so that the workpiece's cut surface to be processed remains parallel to the machine body (1).

2. The grinding device for cutting edges of aluminum alloy door and window frames according to claim 1, characterized in that: Both ends of the body (1) near the bracket (2) are fixedly connected with a stop bar (5). The stop bar (5) is inclined on the body (1) and located below the bracket (2). When the bracket (2) is flipped downward to a preset angle, the end of the stop bar (5) abuts against the bracket (2) to achieve the flipping limit of the bracket (2).

3. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 2, characterized in that: The bracket (2) is fitted with a flap (21) inside, and the flap (21) is coaxially hinged to the bracket (2) on the body (1); the bottom of the bracket (2) is provided with a support block (22), and an electromagnet (6) is provided on the support block (22); the displacement component and the bearing plate (3) are both provided on the flap (21), and the flap (21) is provided with a movable hole (214) to provide clearance space for the movement of the second motor (361).

4. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 3, characterized in that: The end of the stop bar (5) is provided with a socket (54), and a movable rod (51) is movably inserted into the socket (54). One end of the movable rod (51) is fixedly connected to a contact block (52), and a second spring (53) is sleeved on the outside of the movable rod (51). The two ends of the second spring (53) abut against the stop bar (5) and the contact block (52) respectively.

5. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 4, characterized in that: The clamping assembly includes a clamping plate (32), a kit (321), a pressure plate (33), a insertion rod (331), a side plate (332), and a first linear actuator (333). There are two kits (321), which are symmetrically arranged on both sides of the clamping plate (32). There are two insertion rods (331), which are symmetrically arranged on both sides of the pressure plate (33), and the end of the insertion rod (331) away from the pressure plate (33) passes through the kit (321) and is fixedly connected to the side plate (332). The first linear actuator (333) is located in the middle of the clamping plate (32), and its output end is fixedly connected to the side plate (332).

6. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 5, characterized in that: The pressure plate (33) has a positioning block (334) fixedly connected to the top of the side of the platen (32) near the material clamping plate (32), and the bottom surface of the positioning block (334) is an inclined surface.

7. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 5, characterized in that: The angle adjustment assembly includes a disc (31), a base column (311), a limiting hole (312), and a locking component; the clamping plate (32) is rotatably connected to the upper surface of the disc (31), the base column (311) is fixed to the bottom surface of the disc (31), and the output shaft of the second motor (361) is connected to the base column (311) for transmission; the disc (31) is rotatably mounted on the bearing plate (3), and a fixing frame (36) is fixedly connected to the bottom of the bearing plate (3), and the second motor (361) is fixedly mounted on the bottom of the fixing frame (36); there are multiple limiting holes (312), and multiple limiting holes (312) are opened on the disc (31) along an arc-shaped trajectory; the locking component is set on the clamping plate (32) and is used to cooperate with the limiting holes (312) to lock and fix the angle of the clamping assembly after adjustment.

8. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 7, characterized in that: The locking component includes a positioning rod (37), a first spring (371), and an end block (372); the positioning rod (37) is movably inserted through one side of the clamping plate (32), the first spring (371) is sleeved on the outside of the positioning rod (37), and the end block (372) is fixedly connected to the top of the positioning rod (37). The positioning rod (37) is adapted to the limiting hole (312).

9. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 3, characterized in that: The displacement assembly includes a slide rail (211), a lead screw (212), a first motor (213), a slider (34), and a base block (35). There are two slide rails (211), which are symmetrically arranged on the flip plate (21). The slider (34) is fixedly connected to the bottom of the support plate (3) and slides with the slide rail (211). The lead screw (212) is rotatably connected to the flip plate (21). The output end of the first motor (213) is connected to the lead screw (212) for transmission. The base block (35) is fixedly connected to the bottom of the support plate (3). The lead screw (212) and the base block (35) are threadedly connected.

10. A grinding device for cutting edges on aluminum alloy door and window frames according to claim 9, characterized in that: There are four sliders (34), which are rectangularly distributed at the bottom of the support plate (3). The four sliders (34) are divided into two groups, each group containing two sliders (34), and each group of sliders (34) is in sliding cooperation with a slide rail (211).

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