A welding device for aluminum profiles

Abstract

The present invention discloses a welding device for aluminum profiles, which relates to the field of aluminum profile processing and includes a welding torch, a main frame and welding electrodes. The welding torch is fixed on the main frame; a welding electrode conveying mechanism for intermittently conveying the welding electrodes; a grinding mechanism, which includes a first grinding wheel, a second grinding wheel and a grinding belt. Sleeves are rotatably connected to both sides of the first grinding wheel, and the sleeves are slidably connected to the main frame. The second grinding wheel is rotatably connected to the main frame, and both ends of the grinding belt are respectively sleeved on the first grinding wheel and the second grinding wheel; an adjusting member, the output end of which is fixedly connected to the sleeve; by respectively installing the welding electrodes and the grinding mechanism on both sides of the welding torch, during the welding process, the grinding mechanism performs real-time grinding on the next welding point, while the welding electrodes intermittently contact the welding torch to weld the current welding point, solving the problem of needing to grind in advance and improving the overall welding efficiency and welding quality.

Description

Technical Field

[0001] The present invention relates to the field of aluminum profile processing, and particularly to a welding device for aluminum profiles. Background Art

[0002] Aluminum profiles are profiles processed mainly with aluminum, and are mainly used for the construction of some non-standard equipment and the use of door and window frames. For example, for the construction of non-standard equipment, aluminum profiles need to be reprocessed according to the actual requirements of non-standard equipment, such as secondary processing like cutting, punching or welding.

[0003] For example, a synchronous rotation welding device for aluminum profile processing disclosed in the publication number CN117260152A includes a workbench. A square placement groove is provided at the center of the workbench surface. At the placement groove, there are two symmetrically arranged fixed clamps in the front and back. Each fixed clamp includes a symmetrically arranged upper part and a lower part. The lower part is fixed inside the placement groove, and the upper part can be locked and vertically lifted. Inside both the upper part and the lower part of the fixed clamp, there is a fixed mold monomer rotatably connected. Inside each fixed mold monomer, there is a fixed sub-groove. The two fixed sub-grooves form a complete fixed groove, and the fixed groove has the same shape as the multi-variant aluminum profile. On the workbench surface on one side of the placement groove, there is a welding torch, and on one side of the welding torch, there is a positioning plate for positioning the welding torch.

[0004] This patent fixes the aluminum profile through the fixed mold monomer and welds the aluminum profile with the cooperation of the welding torch. However, due to the special material property of the aluminum profile, an oxide layer is easily formed on its surface, and the oxide layer will affect the welding quality of the aluminum profile. Therefore, at present, the aluminum profile will be polished before welding. However, the current welding equipment cannot perform polishing treatment on the welding point in real time during the welding process. If polished in advance and then welded, the timeliness needs to be grasped, otherwise a new oxide layer will be formed again, affecting the welding quality. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a welding device for aluminum profiles to achieve real-time polishing treatment on the next welding point during the welding process and improve the welding quality.

[0006] To achieve the above technical purpose, the present invention provides a welding device for aluminum profiles:

[0007] It includes a welding torch, a main frame and welding electrodes. The welding torch is fixed on the main frame, and further includes:

[0008] An electrode conveying mechanism, located above the welding torch and fixed on the main frame, for intermittently conveying welding electrodes;

[0009] The grinding mechanism is installed under the main frame. The grinding mechanism includes a first grinding wheel, a second grinding wheel and a grinding belt. Sleeves are respectively rotatably connected to both sides of the first grinding wheel. The sleeves are slidably connected to the main frame. The second grinding wheel is rotatably connected to the main frame. Both ends of the grinding belt are respectively sleeved on the first grinding wheel and the second grinding wheel;

[0010] An adjusting member, the output end of which is fixedly connected to the sleeve;

[0011] A driving component, the output end of which is respectively linked with the electrode wire conveying mechanism and the second grinding wheel, and is respectively used for driving the electrode wire conveying mechanism and the second grinding wheel.

[0012] Preferably, a control unit is assembled on the main frame. The control unit includes:

[0013] A first acquisition module, which is used to acquire i groups of solder joint images in chronological order, where i is an integer greater than 1;

[0014] A second acquisition module, which is used to acquire the real-time pressure value applied by the grinding mechanism to the solder joint;

[0015] An image processing module, which calculates a grinding difference value based on i groups of solder joint images;

[0016] A grinding recognition module, which is used to input the real-time pressure value and the grinding difference value as grinding feature data into the trained grinding recognition model and output a grinding pressure value;

[0017] A control module, which controls the adjusting member to adjust the grinding pressure of the grinding mechanism based on the grinding pressure value.

[0018] Preferably, the method for the image processing module to calculate the grinding difference value includes:

[0019] Step 1: Obtain n gray values of n pixels in the solder joint image, establish an analysis set with the n gray values, and calculate the average value of the analysis set, where n is an integer greater than 1;

[0020] Step 2: Repeat Step 1 in chronological order to obtain m average values, where m is an integer greater than 1;

[0021] Step 3: Calculate the absolute value of the difference between m and m - 1 as the grinding difference value.

[0022] Preferably, the method for the grinding recognition module to train the grinding recognition model is:

[0023] Pre-collect g groups of historical grinding feature data and the corresponding grinding pressure values, where g is an integer greater than 1;

[0024] Use the historical grinding feature data and the corresponding grinding pressure values as a sample set. Divide the sample set into a training set and a test set. Use the historical grinding feature data in the training set as the input of the grinding recognition model, and use the grinding pressure values in the training set as the output of the grinding recognition model. Train the grinding recognition model to output a grinding recognition model that meets the preset accuracy. The grinding recognition model is a Naive Bayes model or a Support Vector Machine model.

[0025] Preferably, the electrode conveying mechanism includes:

[0026] Conveyor wheels, at least two are provided. The two conveyor wheels are respectively distributed on both sides of the electrode, and both conveyor wheels are rotatably connected to the main frame;

[0027] The first driving bevel gear is rotatably connected to the main frame;

[0028] The driven sprocket wheel is coaxially and rotatably connected to one of the conveyor wheels and the main frame; the drive chain is sleeved on the first driving bevel gear and the driven sprocket wheel at both ends respectively.

[0029] Preferably, the driving component includes:

[0030] The motor is fixed on the main frame;

[0031] The driving bevel gear is fixedly connected to the output end of the motor;

[0032] The second driving bevel gear meshes with the driving bevel gear, and the second driving bevel gear is fixedly connected coaxially with the axis of the second grinding wheel.

[0033] Preferably, the driving component further includes a synchronizing member. The driving bevel gear is linked with the first driving bevel gear through the synchronizing member. The synchronizing member includes:

[0034] The synchronizing shaft is rotatably connected to the main frame;

[0035] The synchronizing bevel gear is fixed to one end of the synchronizing shaft, and the synchronizing bevel gear meshes with the driving bevel gear;

[0036] The intermittent bevel gear is fixed to the other end of the synchronizing shaft, and the intermittent bevel gear intermittently meshes with the first driving bevel gear.

[0037] Preferably, a driving sprocket wheel is coaxially and fixedly connected to the axis of the first driving bevel gear, and the end of the drive chain far from the driven sprocket wheel is sleeved on the driving sprocket wheel.

[0038] Preferably, the grinding mechanism further includes a tensioning component. The tensioning component includes:

[0039] The pulling frame is slidably connected to the main frame;

[0040] The pressure roller is rotatably connected to the pulling frame, and the grinding belt abuts against the outer surface of the pressure roller;

[0041] The spring abuts against the main frame and the pulling frame at both ends respectively, and is used to apply elastic force to the pulling frame.

[0042] Preferably, the electrode conveying mechanism further includes a guide plate, the guide plate is fixed on the main frame, and the electrode is slidably connected to the guide plate.

[0043] From the above technical solutions, it can be seen that the present application has the following beneficial effects:

[0044] 1: By installing an electrode and a grinding mechanism on both sides of the welding torch respectively, during the welding process, the grinding mechanism polishes the next welding point in real time, while the electrode intermittently contacts the welding torch to weld the current welding point, solving the problem of needing to polish in advance and improving the overall welding efficiency and welding quality.

[0045] 2: By obtaining the solder joint image in real time and comparing and analyzing the solder joint images on the front and back time lines, and adjusting the grinding force of the next solder joint in real time according to the analysis results, avoiding the problems of over-grinding or under-grinding, and further improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0047] Figure 1 It is a schematic diagram of the overall structure of a welding device for aluminum profiles provided by the present invention;

[0048] Figure 2 It is a front view structure schematic diagram of a welding device for aluminum profiles provided by the present invention;

[0049] Figure 3 It is a cross-sectional structure schematic diagram of a welding device for aluminum profiles provided by the present invention;

[0050] Figure 4 It is a partial structure schematic diagram of a welding device for aluminum profiles provided by the present invention;

[0051] Figure 5 It is a schematic diagram of the synchronizer structure of a welding device for aluminum profiles provided by the present invention;

[0052] Figure 6 It is a schematic diagram of the control unit structure of a welding device for aluminum profiles provided by the present invention.

[0053] Description of the Drawings: 1. Welding torch; 2. Electrode conveying mechanism; 21. Conveying wheel; 22. Guide plate; 23. First driving bevel gear; 231. Driving sprocket; 24. Driven sprocket; 25. Transmission chain; 3. Grinding mechanism; 31. First grinding wheel; 311. Second grinding wheel; 312. Sleeve; 32. Grinding belt; 33. Tensioning component; 331. Pulling frame; 332. Belt pressing roller; 333. Spring; 4. Adjusting part; 5. Motor; 51. Driving bevel gear; 52. Second driving bevel gear; 53. Synchronizing part; 531. Synchronizing shaft; 532. Synchronizing bevel gear; 533. Intermittent bevel gear; 6. Main frame; 7. Electrode. Detailed Implementation Modes

[0054] The following description is merely exemplary in nature and is not intended to limit the present disclosure, its application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the embodiments of the present disclosure, and does not necessarily show the specific dimensions and their ratios of the embodiments of the present disclosure. Specific parts in a specific drawing may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0055] Embodiment 1

[0056] Referring to Figure 1 as shown, a welding device for aluminum profiles includes a welding torch 1, an electrode conveying mechanism 2, a grinding mechanism 3, a main frame 6, and an electrode 7. The electrode conveying mechanism 2 and the grinding mechanism 3 are respectively distributed on both sides of the welding torch 1. The welding torch 1, the electrode conveying mechanism 2, and the grinding mechanism 3 are all fixed on the main frame 6. The electrode conveying mechanism 2 is used for intermittently conveying the electrode 7 to the output part of the welding torch 1, and the welding torch 1 is used to generate heat to melt the electrode 7 for welding. The grinding mechanism 3 is used for grinding the next welding point. Generally, the weld seam is about 1 mm. In this embodiment, the width of the grinding mechanism is 2 cm, which can better grind the area to be welded. In addition, the welding torch 1 and the main frame 6 can be used in cooperation with multi-axis manipulators, sliding tables, linear modules, etc. to form an automatic welding robot to solve the problem of the grinding area and achieve comprehensive grinding.

[0057] Exemplarily, in this embodiment, the welding direction during welding is starting from the grinding mechanism 3 and moving along the welding path, that is, the grinding mechanism 3 always grinds the point to be welded first, hereinafter collectively referred to as the next welding point, and then the welding torch 1 moves to the next welding point, and the electrode 7 intermittently contacts the output part of the welding torch 1 to melt the electrode 7 for welding the next welding point.

[0058] The aim is to avoid the situation where all welding points need to be polished first and then welded. By polishing and welding simultaneously, if the polishing path is long and all welding points are polished in advance before welding, the aluminum profile may re-oxidize due to excessive time consumption, which will affect the polishing quality.

[0059] Specifically, refer to Figure 2 As shown, the electrode conveying mechanism 2 includes conveying wheels 21, guide plates 22, first driving bevel gears 23 and driven sprockets 24. There are at least two conveying wheels 21, and the two conveying wheels 21 are respectively distributed on both sides of the electrode 7. Both of the two conveying wheels 21 are rotatably connected to the main frame 6. By rotating the conveying wheels 21, the electrode 7 can be driven to move by friction; the first driving bevel gear 23 is rotatably connected to the main frame 6; the driven sprocket 24 is coaxially rotatably connected to one of the conveying wheels 21 and the main frame 6. Both ends of the transmission chain 25 are respectively sleeved on the first driving bevel gear 23 and the driven sprocket 24. The guide plate 22 is fixed to the main frame 6, and the electrode 7 is slidably connected to the guide plate 22. The guide plate 22 is used to support the electrode 7; it should be noted that this embodiment includes but is not limited to using the guide plate 22. If there are four conveying wheels 21 and the four conveying wheels 21 are distributed in pairs opposite to each other, the guide plate 22 can also be replaced to achieve the function of supporting the electrode 7.

[0060] Exemplarily, by rotating the first driving bevel gear 23, the first driving bevel gear 23 can drive the driven sprocket 24 to rotate through the transmission chain 25, so that the driven sprocket 24 drives one of the conveying wheels 21 to rotate.

[0061] More specifically, refer to Figure 3 and Figure 4 As shown, an adjusting member 4 is fixed on the main frame 6. The polishing mechanism 3 includes a first polishing wheel 31, a second polishing wheel 311, a polishing belt 32 and a tensioning component 33. Sleeves 312 are respectively rotatably connected to both sides of the first polishing wheel 31, and the sleeves 312 are slidably connected to the main frame 6. The output end of the adjusting member 4 is fixedly connected to the sleeves 312. The second polishing wheel 311 is rotatably connected to the main frame 6. Both ends of the polishing belt 32 are respectively sleeved on the first polishing wheel 31 and the second polishing wheel 311; the tensioning component 33 is used to adjust the tension of the polishing belt 32; in this embodiment, the polishing belt 32 can be replaced, which is specifically determined according to the wear situation.

[0062] Exemplarily, by adjusting the position of the sleeve 312 sliding on the main frame 6 through the adjusting member 4, the position of the first grinding wheel 31 can be adjusted, thereby changing the distance between the grinding belt 32 and the grinding point, and thus changing the grinding pressure. For example, the closer the distance, the greater the grinding pressure, and vice versa. When adjusting the position of the first grinding wheel 31, the connection tension between the grinding belt 32 and the first grinding wheel 31 and the second grinding wheel 311 will change. By adjusting the tension of the grinding belt 32 through the tensioning component 33, the grinding belt 32 can be kept taut at all times, avoiding falling off from the first grinding wheel 31 and the second grinding wheel 311.

[0063] It is worth mentioning that the adjusting member 4 in this embodiment can adopt devices such as an oil cylinder or an electric push rod that can drive an object to move linearly, and no specific limitation is made here. Some dust generated by grinding the oxide layer will be blown away by the argon gas supplied by the welding torch 1 of the argon arc welding, and the argon gas can protect the position after grinding from re-oxidation.

[0064] Refer to Figure 3 and Figure 4 As shown, the tensioning component 33 includes a pulling frame 331, a pressure roller 332 and a spring 333. The pulling frame 331 is slidably connected to the main frame 6, the pressure roller 332 is rotatably connected to the pulling frame 331, and the grinding belt 32 abuts against the outer surface of the pressure roller 332. Both ends of the spring 333 abut against the main frame 6 and the pulling frame 331 respectively, and the spring 333 is used to apply an elastic force to the pulling frame 331. Exemplarily, by providing an elastic force to the pulling frame 331 through the spring 333, the pulling frame 331 can always press the grinding belt 32 with the pressure roller 332, so that the grinding belt 32 can be kept taut.

[0065] Furthermore, refer to Figure 4 and Figure 5 As shown, a driving component is fixed on the main frame 6. The driving component includes a motor 5. The output end of the motor 5 is linked with the electrode feeding mechanism 2 and the grinding mechanism 3 respectively. The motor 5 is used to drive the electrode feeding mechanism 2 and the grinding mechanism 3 respectively. A driving bevel gear 51 is fixed at the output end of the motor 5. The driving bevel gear 51 meshes with a second transmission bevel gear 52, and the second transmission bevel gear 52 is fixedly connected coaxially with the axis of the second grinding wheel 311. Exemplarily, the motor 5 drives the second transmission bevel gear 52 to rotate through the driving bevel gear 51, the second transmission bevel gear 52 can drive the second grinding wheel 311 to rotate, and the second grinding wheel 311 can drive the grinding belt 32 to roll, so as to grind the aluminum profile.

[0066] The driving bevel gear 51 is linked with the first transmission bevel gear 23 through a synchronizing member 53. The synchronizing member 53 includes a synchronizing shaft 531. Synchronizing bevel gears 532 and intermittent bevel gears 533 are respectively fixed at both ends of the synchronizing shaft 531. The synchronizing shaft 531 is rotatably connected to the main frame 6, and the synchronizing bevel gear 532 meshes with the driving bevel gear 51, and the intermittent bevel gear 533 intermittently meshes with the first transmission bevel gear 23. Refer toFigure 5 As shown, the intermittent bevel gear 533, that is, the surface tooth block, is not a complete circle. The purpose is that when the intermittent bevel gear 533 rotates one circle, the first driving bevel gear 23 only rotates less than one circle. In this way, it can ensure that the grinding mechanism 3 always works, and the welding rod 7 can approach the welding torch 1 intermittently.

[0067] More specifically, a driving sprocket 231 is coaxially and fixedly connected to the axis center of the first driving bevel gear 23, and one end of the transmission chain 25 far from the driven sprocket 24 is sleeved on the driving sprocket 231. The intermittent bevel gear 533 drives the first driving bevel gear 23 to rotate. The first driving bevel gear 23 can drive the transmission chain 25 to roll through the driving sprocket 231, so as to drive the driven sprocket 24 to rotate.

[0068] Embodiment 2

[0069] Based on the above embodiment, as shown in Fig. 6, a control unit is further assembled on the main frame 6. The control unit is used to control the adjusting member 4. The control unit includes a first acquisition module, a second acquisition module, an image processing module, a grinding recognition module and a control module. Among them, each module is connected through a wired and / or wireless network;

[0070] The first acquisition module is used to acquire i groups of solder joint images in chronological order. i is an integer greater than or equal to 1, that is, to acquire the solder joint images on the welding path in chronological order. In this embodiment, the first acquisition module uses a high-definition camera, and the shooting point coincides with the grinding point of the grinding mechanism 3. The specific installation position will not be elaborated here; it should be noted that in actual application, those skilled in the art can perform shading treatment in front of the lens or reduce the exposure at the system level for the influence of the strong light generated by welding on the first acquisition module. The acquired solder joint images can be preprocessed by noise reduction first, such as cropping to only take the image of the solder joint position. Image noise reduction is a known technology and will not be specifically elaborated here.

[0071] The second acquisition module is used to acquire the real-time pressure value applied by the grinding mechanism 3 to the solder joint; in this embodiment, the second acquisition module uses a pressure sensor or a sensor with a pressure detection function. Taking the pressure sensor as an example, the pressure sensor is installed at the sliding connection between the sleeve 312 and the main frame 6 or at a position where the real-time pressure value applied by the grinding mechanism 3 to the solder joint can be indirectly measured. The specific limitation is not made here. In this way, when the sleeve 312 moves, it can squeeze the pressure sensor, and the real-time pressure value applied by the grinding mechanism 3 to the solder joint can be indirectly measured.

[0072] The image processing module calculates the grinding difference value based on i groups of solder joint images. The method for the image processing module to calculate the grinding difference value includes:

[0073] Step 1: Obtain the n gray values of n pixels in the solder joint image, establish an analysis set with the n gray values, and calculate the average value of the analysis set;

[0074] Step 2: Repeat Step 1 in chronological order to obtain m average values, where both n and m are integers greater than 1;

[0075] Step 3: Calculate the absolute value of the difference between m and m - 1 as the grinding difference value. Exemplarily, if two average values are measured in chronological order, which are 35 and 32 respectively, the difference between the first average value and the second average value is 35 - 32 = 3, and this value of 3 can be used as a parameter for evaluating the grinding effect. The specific evaluation criteria for the grinding difference value after grinding are determined by those skilled in the art according to specific circumstances and are not specifically limited herein.

[0076] The grinding recognition module is used to input the real-time pressure value and the grinding difference value as grinding feature data into the trained grinding recognition model and output the grinding pressure value. The method for the grinding recognition module to train the grinding recognition model is as follows:

[0077] Under experimental conditions, g sets of historical grinding feature data and the corresponding grinding pressure values are collected in advance, where g is an integer greater than 1; under experimental conditions, multiple groups of the same historical grinding feature data are simulated, and multiple groups of different grinding pressure values are used to grind multiple groups of the same historical grinding feature data. Those skilled in the art select the group with the best grinding effect after grinding as the grinding pressure value corresponding to the historical grinding feature data; by conducting experiments on multiple groups of different historical grinding feature data, g sets of historical grinding feature data and the corresponding grinding pressure values can be obtained;

[0078] The historical grinding feature data and the corresponding grinding pressure values are used as a sample set. The sample set is divided into a training set and a test set. The historical grinding feature data in the training set is used as the input of the grinding recognition model, and the grinding pressure value in the training set is used as the output of the grinding recognition model to train the grinding recognition model and output a grinding recognition model that meets the preset accuracy. It should be noted that the standard for meeting the preset accuracy is determined by those skilled in the art according to the actual situation. The grinding recognition model is a Naive Bayes model or a Support Vector Machine model.

[0079] The control module controls the adjusting member 4 to adjust the grinding pressure of the grinding mechanism 3 based on the grinding pressure value, that is, by controlling the telescopic length of the adjusting member 4, the position of the first grinding wheel 31 is changed, and thus the grinding pressure of the grinding mechanism 3 can be changed; in this embodiment, the control module can adopt a hardware device such as a PID controller or a PLC that can perform logical control, which is not specifically limited herein.

[0080] In this embodiment, by analyzing the image data before and after grinding the welding points, the grinding force is changed in real time, thereby avoiding over-grinding or under-grinding and preventing the impact on the welding of aluminum profiles, thus ensuring the welding quality of aluminum profiles.

[0081] The exemplary embodiments of the solution proposed by the present disclosure have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present disclosure can be made without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A welding device for aluminum profiles, comprising a welding gun (1), a main frame (6) and a welding rod (7), wherein the welding gun (1) is fixed to the main frame (6), and is characterized in that: Also includes: A welding rod conveying mechanism (2), located above the welding gun (1) and fixed to the main frame (6), is used for intermittently conveying welding rods (7); A grinding mechanism (3) is installed below the main frame (6), the grinding mechanism (3) comprising a first grinding wheel (31), a second grinding wheel (311) and a grinding belt (32), the first grinding wheel (31) being rotatably connected to sleeves (312) on both sides, the sleeves (312) being slidably connected to the main frame (6), the second grinding wheel (311) being rotatably connected to the main frame (6), and the two ends of the grinding belt (32) being respectively sleeved on the first grinding wheel (31) and the second grinding wheel (311); The adjusting member (4) has an output end fixedly connected to the sleeve (312); A drive assembly, the output end of which is respectively linked to the welding rod conveying mechanism (2) and the second grinding wheel (311), and is used to drive the welding rod conveying mechanism (2) and the second grinding wheel (311); The main frame (6) is equipped with a control unit, which includes: The first acquisition module is used to acquire i groups of welding point images in chronological order, where i is an integer greater than 1; the second acquisition module is used to acquire the real-time pressure value applied to the welding point by the grinding mechanism (3); and the image processing module is used to calculate and obtain the grinding difference value based on the i groups of welding point images; The grinding recognition module is used to input the real-time pressure value and the grinding difference value as grinding feature data into the trained grinding recognition model and output the grinding pressure value; A control module controls the regulating member (4) to adjust the grinding pressure of the grinding mechanism (3) based on the grinding pressure value; The method for calculating the polishing difference value by the image processing module includes: Step 1: Obtain n grayscale values of n pixels in the solder joint image, establish an analysis set based on the n grayscale values, and calculate the average value of the analysis set, where n is an integer greater than 1; Step 2: Repeat step 1 in chronological order to obtain m average values, where m is an integer greater than 1; Step 3: Calculate the absolute value of the difference between the mth average value and the m-1th average value as the polishing difference value; The method for training the polishing recognition model by the polishing recognition module is: Pre-collecting g groups of historical grinding characteristic data and grinding pressure values corresponding to the historical grinding characteristic data, where g is an integer greater than 1; The historical polishing feature data and the polishing pressure values corresponding to the historical polishing feature data are used as a sample set, and the sample set is divided into a training set and a test set. The historical polishing feature data in the training set is used as the input of the polishing recognition model, and the polishing pressure values in the training set are used as the output of the polishing recognition model. The polishing recognition model is trained and a polishing recognition model that meets the preset accuracy is output. The polishing recognition model is a naive Bayes model or a support vector machine model.

2. The aluminum profile welding device according to claim 1, characterized in that: The welding rod conveying mechanism (2) comprises: There are at least two conveying wheels (21), the two conveying wheels (21) are respectively distributed on both sides of the welding rod (7), and the two conveying wheels (21) are both rotatably connected to the main frame (6); A first transmission bevel gear (23) is rotatably connected to the main frame (6); The driven sprocket (24) is coaxially connected to one of the conveying wheels (21) and the main frame (6); the transmission chain (25) has two ends respectively sleeved on the first transmission bevel gear (23) and the driven sprocket (24).

3. The aluminum profile welding device according to claim 2, characterized in that: The drive components include: A motor (5) is fixed on a main frame (6); Active bevel gear (51), fixedly connected to the output end of the motor (5); The second transmission bevel gear (52) is meshed with the active bevel gear (51), and the second transmission bevel gear (52) is coaxially fixedly connected to the axis of the second grinding wheel (311).

4. The aluminum profile welding device according to claim 3, characterized in that: The drive assembly further includes a synchronizer (53), wherein the active bevel gear (51) is linked to the first transmission bevel gear (23) via the synchronizer (53), and the synchronizer (53) includes: A synchronization shaft (531) is rotationally connected to the main frame (6); A synchronous bevel gear (532) is fixed to one end of the synchronous shaft (531), and the synchronous bevel gear (532) is meshed with the active bevel gear (51); The intermittent bevel gear (533) is fixed to the other end of the synchronization shaft (531), and the intermittent bevel gear (533) intermittently meshes with the first transmission bevel gear (23).

5. The aluminum profile welding device according to claim 4, characterized in that: A driving sprocket (231) is coaxially and fixedly connected to the axis of the first transmission bevel gear (23), and one end of the transmission chain (25) away from the driven sprocket (24) is sleeved on the driving sprocket (231).

6. The aluminum profile welding device according to claim 1, characterized in that: The grinding mechanism (3) further comprises a tensioning assembly (33), wherein the tensioning assembly (33) comprises: A pulling frame (331) is slidably connected to the main frame (6); A belt pressing roller (332) is rotatably connected to the pulling frame (331), and the grinding belt (32) abuts against the outer surface of the belt pressing roller (332); The spring (333) has two ends respectively abutting against the main frame (6) and the pulling frame (331), and is used to apply elastic force to the pulling frame (331).

7. The aluminum profile welding device according to claim 1, characterized in that: The welding rod conveying mechanism (2) further comprises a guide plate (22), the guide plate (22) being fixed on the main frame (6), and the welding rod (7) being slidably connected to the guide plate (22).

Images