Aluminum profile surface treatment device and method

Abstract

The invention relates to the technical field of aluminum profile machining, in particular to an aluminum profile surface treatment device and method. An aluminum profile surface treatment device comprises a rack, a conveying mechanism for forcing an aluminum profile to advance and a polishing mechanism for polishing treatment. The double guide rails comprise two guide rails arranged in the length direction of the conveying channel, each guide rail comprises a first grinding section, a torsion section, a second grinding section and an avoiding section which are sequentially connected, and the second grinding sections of the two guide rails achieve 90-degree space pose conversion relative to the first grinding sections through the torsion sections; the grinding assembly comprises a grinding wheel making contact with the edge of the section of the aluminum profile and conducting grinding. And the tension adjusting mechanism comprises a coil spring assembly, and the coil spring assembly applies elastic tension to the sliding block through a coil spring traction rope. The aluminum profile polishing device has the advantage that the probability that burrs on the edge of the section of the aluminum profile are attached to the bristles, and then the polished surface is scratched in the polishing process is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aluminum profile processing, and in particular to a device and method for surface treatment of aluminum profiles. Background Art

[0002] Aluminum profiles are used in the fields of construction, automobiles, electronics, etc. due to their lightweight, corrosion-resistant and easy processing characteristics. In the surface treatment of aluminum profiles, the polishing process is the key link to improve the surface finish, remove processing burrs and oxide layers. Traditional mechanical polishing is prone to scratches or deformation of the profile surface due to rigid contact, while flexible polishing technology can maintain the geometric accuracy of the profile while completing surface finishing through elastic contact and low-pressure grinding, and has gradually become the mainstream process for high-end aluminum processing.

[0003] The core of flexible polishing is to use flexible polishing tools (such as nylon brush rollers, fiber grinding heads, etc.) to work together with abrasives, and achieve adaptive fit with the curvature of the profile surface through the elastic deformation of the bristles to avoid hard friction damage. In a typical process, the polishing roller drives the flexible bristles and abrasive particles (such as silicon carbide and aluminum oxide) to micro-cut the aluminum surface through high-speed rotation, which has both deburring and polishing functions.

[0004] Referring to the Chinese patent application document with publication number CN114589611A and publication date June 7, 2022, entitled "A sliding type follow-cooling polishing device for aluminum profile processing", the polishing device comprises a fixed frame, a carrier plate is installed on the inner side of the fixed frame, a limit member is provided on the surface of the carrier plate, and a polishing member is arranged above the carrier plate. The polishing member comprises a polishing motor and a polishing wheel, and bristles are provided on the surface of the polishing wheel. When the surface of the aluminum profile needs to be polished, the surface of the aluminum profile is ground and polished by the polishing wheel.

[0005] Based on the existing technology, it can be seen that burrs are very likely to be generated on the cross-section of aluminum profiles during the cutting process. When the polishing wheel grinds the surface of the aluminum profile, the burrs at the edge of the cross-section of the aluminum profile are easily absorbed by the bristles and embedded in the gaps between the bristles, forming hard residues in the bristles. These hard residues will not only scratch the surface of the profile and cause secondary defects during the subsequent polishing process, but will also cause the elasticity of the bristles to fail, thereby causing local over-polishing and destroying the consistency of the surface roughness of the aluminum profile. Summary of the invention

[0006] In view of this, the present application provides an aluminum profile surface treatment device and method, which are mainly used to reduce the probability of burrs at the edge of the aluminum profile section adhering to the bristles, thereby scratching the polished surface during the polishing process and destroying the consistency of the profile surface roughness.

[0007] In order to solve the above technical problems, in a first aspect, the present application provides an aluminum profile surface treatment device.

[0008] An aluminum profile surface treatment device includes a frame, a conveying mechanism for forcing the aluminum profile to travel along a conveying channel provided on the frame, and a polishing mechanism for polishing the circumferential side wall of the aluminum profile. The aluminum profile surface treatment device further includes: a double guide rail, which includes two guide rails arranged along the length direction of the conveying channel. Both guide rails include a first grinding section, a twisting section, a second grinding section, and an avoidance section connected in sequence. Among them, the first grinding sections of the two guide rails are symmetrically distributed outside two opposite circumferential side walls of the aluminum profile to be polished. The second grinding sections of the two guide rails achieve a 90° spatial pose conversion relative to the first grinding section through the twisting section and are symmetrically distributed outside the other two opposite circumferential side walls of the aluminum profile to be polished. The avoidance sections of the two guide rails are connected to the end of the second grinding section and extend to form an avoidance structure for the aluminum profile to pass through; a grinding assembly, which is slidably arranged on the double guide rail through a slider and includes at least a pair of grinding wheels that contact and grind the edge of the cross-section of the aluminum profile when the aluminum profile travels to the conveying channel; and a tension adjusting mechanism, which includes a spring assembly fixed to the feeding end of the frame, and the spring assembly applies an elastic pulling force to the slider through a spring traction rope.

[0009] By adopting the above technical solution, by symmetrically distributing one end of the double guide rail outside two opposite side walls of the aluminum profile to be polished, and rotating the other end by 90° and then symmetrically distributing it outside the other two opposite side walls, a guiding path surrounding the aluminum profile is formed, so that the grinding wheel can pre-grind the edge of the cross-section of the aluminum profile (i.e., the burr concentration area), and remove the root of the burr and loose debris in advance, reducing the possibility of the burrs at the edge of the cross-section of the aluminum profile being sheared and pressed into by the roller brush during the subsequent polishing process from the source. And the grinding wheel is slidably arranged on the double guide rail and performs the grinding action synchronously with the movement of the aluminum profile. This makes the grinding wheel always maintain a constant contact with the edge of the profile cross-section, reducing the probability of insufficient grinding or over-cutting caused by fluctuations in the conveying speed of the profile. On the other hand, it can also reduce the probability of the ground powder re-adsorbing to the edge of the cross-section of the aluminum profile, further improving the polishing efficiency.

[0010] Both guide rails are configured to be composed of a first grinding section, a second grinding section, a twisting section, and an avoidance section that are connected in sequence, which has many positive effects. The twisting section adopts a spiral curved surface geometric configuration to achieve a 90° spatial pose conversion of the slider. This enables the grinding wheel to smoothly transition from grinding the outer sides of two opposite side walls of the aluminum profile to grinding the outer sides of the other two opposite side walls during the advancement of the aluminum profile, ensuring the coherence and smoothness of the grinding process. This smooth conversion of the spatial pose avoids situations such as jamming and jitter when the grinding wheel switches the grinding position, thereby ensuring the precision and quality of grinding the edge of the aluminum profile cross-section and further improving the burr removal effect. The avoidance section is connected to the end of the second grinding section and extends to form an avoidance structure, which can provide sufficient space for the aluminum profile to pass smoothly, preventing interference and collision with the guide rail during the advancement of the aluminum profile and ensuring the smoothness of the aluminum profile transportation.

[0011] Optionally, the tension adjustment mechanism further includes a winch assembly fixed to the discharge end of the frame. The winch assembly is connected to the slider through a winch traction rope. The aluminum profile surface treatment device further includes a control mechanism that is electrically connected to the winch assembly and is used to dynamically adjust the contact pressure between the grinding wheel and the edge of the aluminum profile cross-section.

[0012] By adopting the above technical solution, a winch assembly is provided at the discharge end of the frame and connected to the slider through a winch traction rope, and then combined with a control mechanism electrically connected to the winch assembly, the contact pressure between the grinding wheel and the edge of the aluminum profile cross-section can be dynamically adjusted. On the one hand, the control mechanism can adjust the action of the winch assembly in real time according to different characteristics such as the material and hardness of the aluminum profile, and then accurately change the contact pressure between the grinding wheel and the edge of the aluminum profile cross-section, making the grinding process more suitable for different aluminum profiles and improving the quality and effect of grinding; on the other hand, this dynamic adjustment mechanism can adapt to the small position changes of the aluminum profile during transportation, always maintaining a good contact state between the grinding wheel and the edge of the aluminum profile cross-section, further reducing the influence of unstable factors during the profile transportation on the grinding effect and ensuring the stability and consistency of the grinding process.

[0013] Optionally, the winch assembly includes a winch body, which is installed at the bottom of the discharge end of the frame; a traction rope guide wheel group, which is composed of at least two fixed pulleys and is used to guide the winding and unwinding direction of the winch traction rope; the control mechanism includes: a tension sensor, which is arranged on the winch traction rope and is used to detect the tension value of the winch traction rope in real time; a controller, which receives the signal of the tension sensor and calculates the tension difference; a servo motor, which drives the winch body to wind and unwind the traction rope to make the tension difference of the winch traction rope stable within the range of ±10N; an alarm module, which triggers an audible and visual warning when the tension difference exceeds ±15N.

[0014] The tension sensor in the control mechanism detects the tension value of the coil spring traction rope in real time and transmits the signal to the controller. By calculating the tension difference, the controller can accurately grasp the change of the contact pressure between the grinding wheel and the edge of the aluminum profile section. The servo motor drives the winch body to take in and release the traction rope according to the instructions of the controller, so that the tension difference of the coil spring traction rope is stabilized within the range of ±10N. This can ensure that the contact pressure between the grinding wheel and the edge of the aluminum profile section is always within an appropriate range, neither causing insufficient grinding due to too small pressure nor causing surface damage to the profile or excessive wear of the grinding wheel due to too large pressure, greatly improving the grinding quality and efficiency, and ensuring the stability and consistency of the grinding process.

[0015] When the tension difference exceeds ±15N, the alarm module triggers an audible and visual warning, which can timely remind the operator that the equipment is operating abnormally, enabling the operator to quickly take measures for adjustment and repair, avoiding continuous quality problems caused to the aluminum profile due to abnormal contact pressure, reducing production losses, and ensuring the stable and reliable operation of the entire aluminum profile surface treatment device.

[0016] Optionally, the elastic coefficient of the coil spring assembly is 300N / m to 800N / m, which is used to dynamically adjust the contact pressure between the grinding wheel and the edge of the section during the movement of the aluminum profile, and the length of the conveying channel of the conveying mechanism is 5 - 10m.

[0017] Optionally, the polishing mechanism includes two sets of modular polishing units: the first polishing component, which is detachably connected to the first mounting end and includes two sets of first polishing roller groups with bristles for processing two opposite side walls of the aluminum profile; the second polishing component, which is detachably connected to the second mounting end and includes two sets of second polishing roller groups with bristles for processing the remaining two opposite side walls of the aluminum profile.

[0018] Optionally, the first polishing component is distributed along the length direction of the first grinding section, and the second polishing component is distributed along the length direction of the second grinding section.

[0019] Optionally, the control mechanism further includes a travel switch provided at the initial position of the avoidance structure. When the travel switch is triggered, the controller drives the winch to tighten the traction rope, so that the grinding wheel is separated from the aluminum profile.

[0020] By adopting the above technical solution, when the aluminum profile passes through the avoidance structure, the grinding wheel is disengaged from the aluminum profile, which can avoid unnecessary collisions or frictions between the grinding wheel and the aluminum profile caused by small changes in the position or posture of the aluminum profile during the avoidance process, thereby preventing damage to the grinding wheel, extending the service life of the grinding wheel, and also avoiding accidental scratches on the surface of the aluminum profile, improving the product quality. This design realizes automatic action switching, enables the equipment to automatically adjust the working state of the grinding wheel at different advancing stages of the aluminum profile, optimizes the production process, reduces manual intervention, and improves production efficiency.

[0021] Optionally, the bristles of the first polishing roller set and the bristles of the second polishing roller set are both woven from silicon carbide fibers and polyester composite filaments.

[0022] In a second aspect, the present application provides a method for surface treatment of an aluminum profile, which is applied to the surface treatment device for an aluminum profile described in the first aspect, and the surface treatment method is as follows: S1. Force the aluminum profile to continuously travel along the conveying channel on the rack through the conveying mechanism; S2. When the aluminum profile enters the conveying channel, the coil spring assembly applies an initial elastic tension to the grinding assembly through the coil spring traction rope, so that the grinding wheel grinds two opposite edges of the cross-section of the aluminum profile; S3. When the aluminum profile pushes the grinding assembly to move along the double guide rails to the torsion section, the grinding assembly rotates 90° around the axis of the aluminum profile through the geometric configuration of the spiral surface to complete the spatial pose conversion; S4. When the grinding assembly completes the spatial pose conversion, the coil spring assembly applies an elastic tension to the grinding assembly through the coil spring traction rope, so that the grinding wheel grinds the other two opposite edges of the cross-section of the aluminum profile; S5. When the edges of the cross-section of the aluminum profile are ground, the polishing mechanism polishes the circumferential side wall of the aluminum profile; S6. After the aluminum profile completely passes through the conveying channel, the coil spring assembly applies an elastic tension to the grinding assembly through the coil spring traction rope to pull the grinding assembly back to the initial position.

[0023] By adopting the above technical solution, the conveying mechanism conveys the aluminum profile into the conveying channel, and the coil spring assembly applies an initial elastic tension to the grinding assembly through the coil spring traction rope, so that the grinding wheel grinds two opposite edges of the cross-section of the aluminum profile. The aluminum profile pushes the grinding assembly to move along the double guide rails and complete the spatial pose conversion. The coil spring assembly applies an elastic tension to the grinding assembly through the coil spring traction rope, so that the grinding wheel grinds the other two opposite edges of the cross-section of the aluminum profile. When the edges of the cross-section of the aluminum profile are ground, the polishing mechanism polishes the circumferential side wall of the aluminum profile. Thus, the possibility of burrs at the edges of the cross-section of the aluminum profile being sheared and pressed into by the roller brush during the subsequent polishing process is reduced from the source, improving the polishing effect.

[0024] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. The grinding wheel can pre-grind the edges of the aluminum profile cross-section (i.e., the burr concentration area), removing the burr roots and loose debris in advance, reducing the possibility of burrs being sheared and pressed into the subsequent polishing process from the source. And the grinding wheel is slidably arranged on the double guide rails and performs the grinding action synchronously with the movement of the aluminum profile. This design makes the grinding wheel always maintain a constant contact with the profile cross-section edge on the one hand, reducing the probability of insufficient grinding or over-cutting caused by fluctuations in the profile conveying speed, and on the other hand, also reducing the probability of the ground powder re-adsorbing to the aluminum profile cross-section edge, further improving the polishing efficiency; 2. The coil spring assembly applies a continuous pulling force to the grinding assembly in the feeding direction, and the winch assembly dynamically adjusts the tension balance by winding and unwinding the cable at the other end. The synergistic effect of the two makes the grinding assembly always receive a stable traction force when moving on the double guide rails, avoiding problems such as offset and jitter of the grinding assembly caused by inertia or the undulation of the profile surface. The constant tension control ensures a stable contact pressure between the grinding wheel and the profile edge, which can not only efficiently remove burrs but also prevent over-grinding from damaging the substrate; 3. Through the linkage control of the tension sensor and the servo motor, real-time compensation of the tension difference of the coil spring traction rope is achieved, stabilizing the contact pressure fluctuation between the grinding wheel and the aluminum profile cross-section edge, thus solving the problem of inconsistent grinding depth caused by the change of the traditional mechanical spring pressure with the stroke; 4. The grinding wheel first grinds the two opposite edges of the aluminum profile cross-section in the first grinding section, and then the first polishing roller group polishes the two opposite side walls of the aluminum profile with the ground edges. After the grinding wheel completes the spatial pose conversion, the grinding wheel grinds the other two opposite edges of the aluminum profile cross-section in the second grinding section, and then the second polishing roller group polishes the other two opposite side walls of the aluminum profile with the ground edges. Further reducing the probability of the debris after grinding adhering to the aluminum profile cross-section edge, and then reducing the probability of the debris adhering to the first polishing roller group and the second polishing roller group and scratching the polished surface in the subsequent polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of an aluminum profile surface treatment device according to an embodiment of the present application; Figure 2 is Figure 1 the three-dimensional structural schematic diagram of the double guide rails in Figure 3 is Figure 1 the two-dimensional structural schematic diagram of the double guide rails in Figure 4 is the two-dimensional structural schematic diagram of the polishing mechanism according to an embodiment of the present application; Figure 5 is the sectional view of the double guide rails; Figure 6 Flow chart of the control mechanism for adjusting the tension adjusting mechanism; Figure 7 Schematic structural diagram of the aluminum profile being transported to the first grinding section on the double guide rails; Figure 8 Schematic structural diagram of the aluminum profile being transported to the twisting section on the double guide rails; Figure 9 Schematic structural diagram of the aluminum profile being transported to the second grinding section on the double guide rails.

[0026] Explanation of reference numerals: 1. Conveyor channel; 11. Conveyor mechanism; 2. Polishing mechanism; 21. First polishing assembly; 211. First polishing roller group; 22. Second polishing assembly; 221. Second polishing roller group; 3. Double guide rails; 31. Avoidance structure; 32. First grinding section; 33. Second grinding section; 34. Twisting section; 35. Avoidance section; 4. Grinding assembly; 41. Grinding wheel; 5. Tension adjusting mechanism; 51. Spring assembly; 511. Spring traction rope; 52. Hoisting assembly; 521. Hoist body; 522. Hoisting traction rope; 100. Processing device; 101. Frame; 102. First mounting end; 103. Second mounting end; 104. Aluminum profile. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the Figures 1-9 of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

[0028] In a first aspect, the embodiments of the present application provide a surface treatment device for aluminum profiles.

[0029] Figure 1 Shows a three-dimensional structural diagram of a surface treatment device for aluminum profiles according to an embodiment of the present application. Figure 2 and Figure 3 are respectively the three-dimensional stereogram and two-dimensional plan view of the double guide rails 3; Figure 4It is a schematic diagram of the two-dimensional structure of the polishing mechanism 2. After the aluminum profile 104 is formed, it needs to be cut to form a standard length. Burrs are easily generated on the cross-section of the cut aluminum profile 104, and the burrs on the edge of the cross-section of the aluminum profile 104 are likely to scratch the polished surface during the subsequent polishing stage. Therefore, by grinding the burrs on the edge of the cross-section of the aluminum profile 104 and then polishing the circumferential side wall of the aluminum profile 104, the polishing effect during the polishing stage can be greatly enhanced.

[0030] As Figure 1 shown, this embodiment provides a surface treatment device for aluminum profiles, which includes a frame 101, a conveying channel 1, a conveying mechanism 11, and a polishing mechanism 2. In this embodiment, the conveying mechanism 11 includes two independent material conveying roller units. Each material conveying roller unit includes two parallel material conveying rollers and a spring connecting the two material conveying rollers. A material passing cavity for the aluminum profile 104 to pass through is formed between the two material conveying rollers of each group. The conveying channel 1 is the space between two material passing cavities parallel to the length direction of the frame 101. As Figure 1 and Figure 4 shown, the two material conveying roller units form a 90° angle, so that the aluminum profile 104 can be kept in the middle position of the frame 101 during the conveying process of the aluminum profile 104, reducing the deviation of the aluminum profile 104 during the conveying process and thus affecting the polishing effect of the circumferential side wall of the aluminum profile 104.

[0031] The processing device 100 of the embodiment of the present application further includes a double guide rail 3 fixed on the frame 101 and located in the conveying channel 1, a grinding assembly 4 slidably arranged on the double guide rail 3 through a slider, and a tension adjusting mechanism 5. The grinding assembly 4 includes at least a pair of grinding wheels 41 that contact and grind the edge of the cross-section of the aluminum profile 104 when the aluminum profile 104 travels to the conveying channel 1. As an example, the grinding wheel 41 can be a black silicon carbide grinding wheel, a diamond grinding wheel, or a white corundum grinding wheel.

[0032] As Figure 2 and Figure 3 shown, and in combination with Figure 1 and Figure 5 , the double guide rail 3 includes two guide rails arranged along the length direction of the conveying channel 1. Both guide rails include a first grinding section 32, a torsion section 34, a second grinding section 33, and an avoidance section 35 that are connected in sequence. Among them, the first grinding sections 32 of the two guide rails are symmetrically distributed on the outer sides of two opposite circumferential side walls of the aluminum profile 104 to be polished along the length direction parallel to the conveying channel 1. The second grinding sections 33 of the two guide rails realize a 90° spatial pose conversion relative to the first grinding sections 32 through the torsion section 34 and are symmetrically distributed on the outer sides of the other two opposite circumferential side walls of the aluminum profile 104 to be polished along the length direction parallel to the conveying channel 1. The avoidance sections 35 of the two guide rails are connected to the end of the second grinding section 33 and extend to form an avoidance structure 31 for the aluminum profile 104 to pass through.

[0033] Figure 5 shows the segmentation of the double guide rail 3, as Figure 1 and Figure 5 shown. In the embodiment of the present application, the first grinding section 32 is detachably mounted on the first mounting end 102 of the frame 101 by means of bolts or flange connections, etc., and the second grinding section 33 is detachably mounted on the second mounting end 103 of the frame 101 by means of bolts or flange connections, etc. The torsion section 34 has a helical surface geometric configuration and is used to connect the adjacent ends of the first grinding section 32 and the second grinding section 33 to achieve a 90° spatial pose conversion of the slider. The 90° spatial pose conversion of the slider drives the grinding assembly 4 to synchronously complete a 90° spatial pose adjustment, so that the grinding assembly 4 can complete the grinding of the edge of the cross-section of the aluminum profile 104, thereby removing the burrs on the edge of the cross-section of the aluminum profile 104.

[0034] To facilitate understanding of the moving manner of the grinding wheel 41 along with the aluminum profile 104, Figure 7 、 Figure 8 and Figure 9 respectively provide schematic structural diagrams when the aluminum profile 104 is conveyed to the first grinding section 32, the torsion section 34, and the second grinding section 33 on the double guide rail 3. Through Figure 7 、 Figure 8 and Figure 9 it can be seen that the aluminum profile 104 is conveyed under the action of the conveying mechanism 11, and after contacting the grinding wheel 41, it pushes the grinding wheel 41 to pass through the first grinding section 32, the torsion section 34, and the second grinding section 33 in sequence, so that the grinding wheel 41 completes a 90° spatial pose adjustment while completing the grinding of the edge of the cross-section of the aluminum profile 104.

[0035] By symmetrically distributing the first grinding sections 32 of the two guide rails outside the two opposite side walls of the aluminum profile 104 to be polished, and at the same time rotating the second grinding sections 33 of the two guide rails by 90° and symmetrically distributing them outside the other two opposite side walls, a guiding path surrounding the aluminum profile 104 is formed, so that the grinding wheel 41 can pre-grind the edge of the cross-section of the aluminum profile 104 (i.e., the burr concentration area), remove the burr roots and loose debris in advance, and reduce the possibility of burrs being sheared and pressed into by the roller brush during the subsequent polishing process from the source. On the one hand, it makes the grinding wheel 41 always keep a constant contact with the edge of the cross-section of the aluminum profile 104, reducing the probability of insufficient grinding or over-cutting caused by fluctuations in the conveying speed of the profile. On the other hand, it can also reduce the probability of the ground powder re-adsorbing to the edge of the cross-section of the aluminum profile 104, further improving the polishing efficiency.

[0036] ​​The avoidance section 35 is connected to the end of the second grinding section 33 and extends to form an avoidance structure 31. That is, the first installation end 102 of the frame 101 is the same length as the first grinding section 32 of the double track, and the second installation end 103 of the frame 101 is in the same length direction as the second grinding section 33 of the double track. The tension adjustment mechanism 5 includes a spring assembly 51 fixed to the feeding end of the frame 101 and a hoisting assembly 52 fixed to the discharging end of the frame 101. The spring assembly 51 exerts an elastic pulling force on the slider through a spring traction rope 511. The hoisting assembly 52 is connected to the slider through a hoisting traction rope 522. The processing device 100 further includes a control mechanism electrically connected to the hoisting assembly 52 and used for dynamically adjusting the contact pressure between the grinding wheel 41 and the edge of the cross-section of the aluminum profile 104.

[0037] The spring assembly 51 exerts a continuous pulling force on the grinding assembly 4 in the feeding direction. The hoisting assembly 52 dynamically adjusts the tension balance on the spring traction rope 511 by taking in and releasing the hoisting traction rope 522. The combined action of the spring assembly 51 and the hoisting assembly 52 enables the grinding assembly 4 to always receive a uniform pulling force when moving on the double guide rails 3, thereby effectively suppressing the offset and vibration of the grinding assembly 4 caused by inertia or the undulation of the surface of the aluminum profile 104. Constant tension control ensures the stability of the contact pressure between the grinding wheel 41 and the edge of the profile, which can not only efficiently remove burrs but also prevent over-grinding from damaging the surface of the aluminum profile 104 and destroying the consistency of the surface roughness of the aluminum profile 104.

[0038] As Figure 4 shown, as an example, the polishing mechanism 2 includes two sets of modular polishing units: a first polishing assembly 21 and a second polishing assembly 22. The first polishing assembly 21 is detachably connected to the first installation end 102 and includes two sets of first polishing roller groups 211 with bristles and used for processing two opposite side walls of the aluminum profile 104. As an example, the bristles are composed of silicon carbide fibers and polyester composite filaments with a nano-aluminum oxide coating on the surface. The diameter of the silicon carbide fibers is 50 - 100 μm, accounting for 60 - 80 wt%, and the thickness of the nano-aluminum oxide coating on the surface of the polyester composite filaments is 2 - 5 μm. The bristles are wound around the polishing roller matrix in a spiral configuration, and the pitch is 1 / 3 to 1 / 2 of the effective length of the bristles. The tensile strength of a single bristle is ≥500 MPa, and the temperature resistance performance is ≥300 °C.

[0039] The second polishing assembly 22 is detachably connected to the second mounting end 103 and includes two sets of second polishing roller groups 221 having bristles and used for processing the remaining two opposite side walls of the aluminum profile 104. Preferably, the side walls of the aluminum profile 104 polished by the first polishing roller group 211 and the second polishing roller group 221 should be connected to the cross-section edges ground by the grinding wheel 41. That is, after the grinding wheel 41 grinds the cross-section edges at the first mounting section, the first polishing roller group 211 immediately grinds the side wall of the aluminum profile 104 connected to the edge. After the grinding wheel 41 completes a 90° spatial pose conversion and grinds the remaining two edges of the cross-section at the second mounting section, the second polishing roller group 221 grinds the side wall of the aluminum profile 104 connected to the edge. Through the above grinding and polishing methods, the probability of debris adhering to the cross-section edges of the aluminum profile 104 after grinding can be further reduced, and the probability of debris adhering to the first polishing roller group 211 and the second polishing roller group 221 and scratching the polished surface during subsequent polishing can be reduced.

[0040] Figure 6 The flowchart of the control mechanism for adjusting the tension adjustment mechanism 5 is shown, in combination with Figure 1 、 Figure 2 and Figure 4 , the hoisting assembly 52 includes a hoist body 521 installed at the bottom of the discharge end of the frame 101, and a traction rope guide wheel group composed of at least two fixed pulleys for guiding the winding and unwinding direction of the hoisting traction rope 522.

[0041] The control mechanism includes a tension sensor, a controller, a servo motor, and an alarm module. The tension sensor is arranged on the spring traction rope 511. The tension sensor can detect the tension value F1 of the spring traction rope 511 in real time, and then detect the state of the entire grinding process of the grinding assembly 4. The controller receives the signal from the tension sensor and calculates the tension difference ΔF from the target tension F0. The servo motor is used to drive the hoist body 521 to wind and unwind the traction rope. Specifically: based on the PID algorithm (proportional coefficient Kp = 0.8, integral time Ti = 0.1 s, derivative time Td = 0.05 s), the controller outputs a servo motor speed correction instruction in real time according to ΔF, and realizes the control of the tension difference ΔF within ±10 N through PWM duty cycle adjustment (resolution 0.1%), where the control period ≤ 10 ms. When the tension difference exceeds ±15 N, the audible and visual alarm of the alarm module is triggered, and subsequent manual intervention inspection is carried out. At the same time as the audible and visual alarm is triggered, the controller controls the emergency braking of the conveying mechanism 11. Specifically, in implementation, the controller sends a trigger instruction to the alarm module through the RS485 bus. The alarm module includes an LED strobe light (strobe frequency 5 Hz) and a piezoelectric buzzer (sound pressure level ≥ 85 dB).

[0042] The control mechanism further includes a travel switch disposed at the initial position of the avoidance structure 31. The travel switch can be triggered by the aluminum profile 104 or by the slider mounted on the double guide rail 3. When the travel switch is triggered, the controller drives the winch to tighten the traction rope, so that the grinding wheel 41 is disengaged from the aluminum profile 104.

[0043] The implementation principle of the aluminum profile surface treatment device according to the embodiment of the present application is as follows: The conveying mechanism 11 forces the aluminum profile 104 to continuously travel along the conveying channel 1 on the frame 101. When the aluminum profile 104 enters the first grinding section 32, the coil spring assembly 51 applies an initial elastic tension to the grinding assembly 4 through the coil spring traction rope 511, so that the grinding wheel 41 grinds the two opposite edges of the cross section of the aluminum profile 104. The two opposite side walls of the aluminum profile 104 with the ground edges are polished by the first polishing roller group 211. When the aluminum profile 104 then pushes the grinding assembly 4 to move along the double guide rail 3 to the torsion section 34, the grinding assembly 4 is rotated 90° around the axis of the aluminum profile 104 through the spiral surface geometric configuration, completing the spatial pose conversion of the grinding assembly 4. When the grinding assembly 4 completes the spatial pose conversion, the coil spring assembly 51 applies an elastic tension to the grinding assembly 4 through the coil spring traction rope 511, so that the grinding wheel 41 grinds the other two opposite edges of the cross section of the aluminum profile 104, and the other two opposite side walls of the aluminum profile 104 with the ground edges are polished by the second polishing assembly 22. When the aluminum profile 104 completely passes through the conveying channel 1, the coil spring assembly 51 applies an elastic tension to the grinding assembly 4 through the coil spring traction rope 511, and pulls the grinding assembly 4 back to the initial position.

[0044] In a second aspect, the embodiment of the present application provides a method for surface treatment of aluminum profiles, which is applied to an aluminum profile surface treatment device described in the first aspect.

[0045] A method for surface treatment of aluminum profiles, and the treatment method is as follows: S1. The conveying mechanism 11 forces the aluminum profile 104 to continuously travel along the conveying channel 1 on the frame 101; S2. When the aluminum profile 104 enters the conveying channel 1, the coil spring assembly 51 applies an initial elastic tension to the grinding assembly 4 through the coil spring traction rope 511, so that the grinding wheel 41 grinds the two opposite edges of the cross section of the aluminum profile 104; S3. When the aluminum profile 104 pushes the grinding assembly 4 to move along the double guide rail 3 to the torsion section 34, the grinding assembly 4 is rotated 90° around the axis of the aluminum profile 104 through the spiral surface geometric configuration, completing the spatial pose conversion; S4. When the grinding assembly 4 completes the spatial pose conversion, the coil spring assembly 51 applies an elastic tension to the grinding assembly 4 through the coil spring traction rope 511, so that the grinding wheel 41 grinds the other two opposite edges of the cross section of the aluminum profile 104; S5. When the grinding of the edge of the cross-section of the aluminum profile 104 is completed, the polishing mechanism 2 polishes the circumferential side wall of the aluminum profile 104; S6. When the aluminum profile 104 completely passes through the conveying channel 1, the coil spring assembly 51 applies an elastic pulling force to the grinding assembly 4 through the coil spring traction rope 511, and pulls the grinding assembly 4 back to the initial position.

[0046] The above is the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An aluminum profile surface treatment device, comprising a frame, a conveying mechanism for forcing the aluminum profile to move along a conveying channel provided on the frame, and a polishing mechanism for polishing the circumferential side wall of the aluminum profile, characterized in that: The aluminum profile surface treatment device also includes: A double guide rail, comprising two guide rails arranged along the length direction of the conveying channel, both guide rails comprising a first polishing section, a torsion section, a second polishing section and an avoidance section connected in sequence, wherein the first polishing sections of the two guide rails are symmetrically distributed on the outside of two opposite circumferential side walls of the aluminum profile to be polished, the second polishing sections of the two guide rails achieve a 90° spatial posture conversion relative to the first polishing section through the torsion section, and are symmetrically distributed on the outside of the other two opposite circumferential side walls of the aluminum profile to be polished, and the avoidance sections of the two guide rails are connected to the end of the second polishing section and extend to form an avoidance structure for the aluminum profile to pass through; A grinding assembly is slidably disposed on the double guide rails through a slider and includes at least one pair of grinding wheels for contacting and grinding the edges of the aluminum profile sections when the aluminum profiles travel to the conveying channel; and The tension regulating mechanism comprises a coil spring assembly fixed to the feeding end of the frame, and the coil spring assembly applies elastic tension to the slide block through a coil spring traction rope.

2. The aluminum profile surface treatment device according to claim 1, characterized in that: The tension adjustment mechanism also includes a winch assembly fixed to the discharge end of the frame, the winch assembly is connected to the slider through a winch traction rope, and the aluminum profile surface treatment device also includes a control mechanism electrically connected to the winch assembly and used to dynamically adjust the contact pressure between the grinding wheel and the edge of the aluminum profile section.

3. The aluminum profile surface treatment device according to claim 2, characterized in that: The hoist assembly comprises: The hoist body is installed at the bottom of the discharging end of the frame; The traction rope guide wheel group is composed of at least two fixed pulleys and is used to guide the retraction and release direction of the winch traction rope; the control mechanism includes: A tension sensor is provided on the coiled spring traction rope and is used to detect the tension value of the coiled spring traction rope in real time; A controller that receives a signal from the tension sensor and calculates a tension difference; The servo motor drives the winch body to retract and release the traction rope, so that the tension difference of the coil spring traction rope is stabilized within the range of ±10N; Alarm module, triggers sound and light alarm when the tension difference exceeds ±15N.

4. The aluminum profile surface treatment device according to claim 3, characterized in that: The elastic coefficient of the coil spring assembly is 300N / m to 800N / m, and is used to dynamically adjust the contact pressure between the grinding wheel and the edge of the section during the movement of the aluminum profile. The conveying channel length of the conveying mechanism is 5-10m.

5. The aluminum profile surface treatment device according to claim 1, characterized in that: The polishing mechanism comprises two sets of modular polishing units: A first polishing assembly, detachably connected to the first mounting end, comprising two sets of first polishing rollers with bristles, for processing two opposite side walls of the aluminum profile; The second polishing assembly is detachably connected to the second mounting end and comprises two sets of second polishing rollers with bristles for processing the remaining two opposite side walls of the aluminum profile.

6. The aluminum profile surface treatment device according to claim 5, characterized in that: The first polishing components are distributed along the length direction of the first polishing section, and the second polishing components are distributed along the length direction of the second polishing section.

7. The aluminum profile surface treatment device according to claim 3, characterized in that: The control mechanism also includes a travel switch arranged at the initial position of the avoidance structure. When the travel switch is triggered, the controller drives the winch to tighten the traction rope to make the grinding wheel break away from contact with the aluminum profile.

8. The aluminum profile surface treatment device according to claim 5, characterized in that: The bristles of the first polishing roller group and the bristles of the second polishing roller group are both woven from silicon carbide fibers and polyester composite yarns.

9. A method for surface treatment of aluminum profiles, characterized in that: The surface treatment device for aluminum profiles according to any one of claims 1 to 8, wherein the surface treatment steps are as follows: S1, forcing the aluminum profile to move continuously along the conveying channel on the frame through the conveying mechanism; S2. When the aluminum profile enters the conveying channel, the coil spring assembly applies an initial elastic tension to the grinding assembly through the coil spring traction rope, so that the grinding wheel grinds the two opposite edges of the aluminum profile section; S3, when the aluminum profile pushes the grinding assembly to move along the double guide rails to the torsion section, the grinding assembly is rotated 90° around the axis of the aluminum profile through the spiral surface geometry to complete the spatial posture conversion; S4. When the grinding assembly completes the spatial posture conversion, the coil spring assembly applies elastic tension to the grinding assembly through the coil spring traction rope, so that the grinding wheel grinds the other two opposite edges of the aluminum profile section; S5. When the edge of the aluminum profile section is polished, the polishing mechanism polishes the circumferential side wall of the aluminum profile; S6. After the aluminum profile has completely passed through the conveying channel, the coil spring assembly applies elastic tension to the grinding assembly through the coil spring traction rope to pull the grinding assembly back to the initial position.

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