Automatic polishing device for sheet metal parts

Abstract

The invention relates to an automatic polishing device for sheet metal parts, and relates to the technical field of sheet metal part polishing. The sheet metal part polishing device comprises a polishing table, a positioning assembly arranged on the polishing table and a polishing assembly, and the positioning assembly is used for fixing a sheet metal part to the polishing table; the polishing assembly is used for polishing the sheet metal part; the sheet metal part polishing device further comprises a scanning module and a control module, the scanning module is electrically connected to the control module, the positioning assembly and the polishing assembly are both controlled by the control module, the scanning module is used for scanning the surface of a sheet metal part, and the control module is used for obtaining a scanning result obtained through scanning of the scanning module and determining a polishing area of the surface of the sheet metal part. The control module is further used for controlling the grinding assembly to grind the grinding area. According to the sheet metal part polishing device, the polishing precision of the sheet metal part can be improved, and the polishing effect of the sheet metal part is optimized.

Description

Technical Field

[0001] The present application relates to the technical field of sheet metal grinding, and in particular to an automatic sheet metal grinding device. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates, including shearing, punching, cutting, compounding, folding, welding, riveting, splicing and forming, etc. The products processed by sheet metal technology are called sheet metal parts. Sheet metal parts need to be polished during the production process. The polishing tool is generally a frosted block with a frosted surface and an electric device for driving the frosted block to move. The electric device can be a motor, and the frosted block is installed on the motor. When polishing, the operator fixes the sheet metal with one hand and holds the polishing tool with the other hand, and makes the frosted surface contact the position on the surface of the sheet metal that needs to be polished, and then starts the electric device to drive the polishing tool to move relative to the surface of the sheet metal, thereby utilizing the friction between the frosted surface and the surface of the sheet metal to achieve the polishing of the sheet metal.

[0003] Regarding the above-mentioned related technologies, the above-mentioned grinding process is to manually control the contact position and grinding area between the sheet metal part and the frosted surface, which may easily cause deviation in the grinding position, affect the grinding accuracy and grinding effect, and needs to be improved. Summary of the invention

[0004] In order to improve the grinding accuracy of sheet metal parts and optimize the grinding effect of sheet metal parts, the present application provides an automatic grinding device for sheet metal parts.

[0005] The present application provides an automatic sheet metal polishing device, comprising a polishing table, a positioning component and a polishing component arranged on the polishing table, wherein the positioning component is used to fix the sheet metal on the polishing table; the polishing component is used to polish the sheet metal; the device also includes a scanning module and a control module, wherein the scanning module is electrically connected to the control module, and the positioning component and the polishing component are both controlled by the control module. The scanning module is used to scan the surface of the sheet metal, and the control module is used to obtain the scanning results obtained by the scanning module and determine the polishing area on the surface of the sheet metal, and is also used to control the polishing component to polish the polishing area.

[0006] By adopting the above technical solution, the sheet metal part is fixed on the polishing table using the positioning component to realize automatic positioning of the sheet metal part, and then the scanning module and the control module are used to automatically scan and determine the polishing area of ​​the sheet metal part. Finally, the polishing component is controlled to polish the polishing area in a targeted manner, thereby achieving precise polishing of the sheet metal part. The entire process reduces human participation, realizes automated polishing, and improves polishing efficiency.

[0007] Preferably, the grinding assembly is located above the grinding table and the sheet metal part, and the grinding assembly includes a bracket, a driving member, and arranged on the bracket: two rollers, a rotating member, sanding paper, a pressure plate, and a movable member; the roller is rotatably connected to the bracket through the rotating member, the sanding paper is wound between the two rollers, and there are sanding sections of different widths in the length direction of the sanding paper, the pressure plate is attached to the upper surface of the sanding paper, and the movable member is used to drive the pressure plate to rise and fall or move; the driving member is used to drive the bracket to move back and forth, so that the sanding paper moves back and forth relative to the sheet metal part; the rotating member, the driving member and the movable member are all controlled by the control module.

[0008] By adopting the above technical solution, the pressure plate is moved to the top of the grinding area by the movable part, and sanding sections of different widths are selected according to the size of the corresponding grinding area, so that the sanding sections of corresponding widths move to between the sheet metal and the pressure plate during the rotation of the roller, and then the pressure plate is driven downward by the lifting movable part to press the sandpaper against the sheet metal, and then the bracket is driven to move by the driving part, so that the sanding paper and the pressure plate move relative to the sheet metal as a whole as the bracket moves, thereby achieving friction grinding of the sheet metal.

[0009] Preferably, the positioning component is used to drive the sheet metal to rotate, move and flip so that the scanning module can scan the entire surface of the sheet metal; the scanning module is used to scan the surface of the sheet metal, and the control module is used to obtain the scanning area scanned by the scanning module, and determine whether there is a grinding area consistent with the preset reference area in the scanning area; if not, the positioning component is controlled to drive the sheet metal to perform movement, flipping and rotation operations until there is a grinding area consistent with the preset reference area in the scanning area; if so, the positioning component is controlled to drive the sheet metal to perform movement, flipping and rotation operations so that the grinding area faces the frosted surface of the sandpaper.

[0010] By adopting the above-mentioned technical solution, when the present application uses the control module to determine the grinding area, it is limited that the grinding area must be consistent with the preset reference area. The preset reference area here can be understood as a position that is pre-defined and stored in the control module, and the corresponding sheet metal part should be scanned. It is limited that the determined grinding area must be consistent with the preset reference area, that is, it includes the boundary position, rather than one of the local areas of the preset reference area, so as to ensure that the entire grinding area is polished during subsequent grinding, thereby improving the integrity of the determined grinding area.

[0011] Preferably, the scanning module comprises a forward scanning unit and a lateral scanning unit, the forward scanning unit is used to scan a side surface of the sheet metal part facing the sandpaper, and the lateral scanning unit is used to scan the surface of the sheet metal part outside the scanning range of the forward scanning unit; the control module is used to determine whether there is a grinding area consistent with a preset reference area in the first scanning area scanned by the forward scanning unit, and if not, control the positioning component to drive the sheet metal part to perform movement, flipping, and rotation operations until there is a grinding area consistent with the preset reference area in the first scanning area; If there is a grinding area, a second scanning area obtained by the lateral scanning unit is obtained, and based on the second scanning area, it is analyzed whether the sheet metal surface corresponding to the grinding area is in the same plane, and the analysis result is output so that the operator can be informed; wherein the analysis result at least includes a judgment result of whether they are in the same plane, and a pressure plate structure that can adapt and fit with the grinding area.

[0012] By adopting the above technical solution, the surface of the sheet metal scanned by the forward scanning unit can be considered as the position of the sheet metal that can directly come into contact with the sandpaper for polishing. When a polishing area appears in the first scanning area scanned by the forward scanning unit, the side scanning unit will also be used to determine whether the polishing area is flat. This operation is to find a pressure plate that fully fits the surface of the polishing area, so that the pressure plate can polish the entire polishing area, thereby further improving the polishing accuracy.

[0013] Preferably, a collecting chamber is provided at the bottom of the grinding table, and a blanking port for communicating with the collecting chamber is provided on the surface of the grinding table facing the sheet metal part. An adsorption part is connected to the side wall of the collecting chamber, and the adsorption part is used to evacuate the interior of the collecting chamber to form a negative pressure at the blanking port. A filter is provided at the adsorption end of the adsorption part, and a purge pipe is connected to the air outlet end of the adsorption part, and the mouth of the purge pipe faces the sheet metal part.

[0014] By adopting the above-mentioned technical solution, debris is easily generated during the grinding process of sheet metal parts. In this regard, the present application provides an adsorption member for adsorbing and collecting the debris in a collection chamber, and uses the purge pipe of the adsorption member to purge the surface of the sheet metal part to help the debris fall into the collection chamber, thereby achieving clean and environmentally friendly processing of the sheet metal parts.

[0015] Preferably, a guide plate and a first linkage member are provided on the upper surface of the grinding table near the blanking port, the guide plate is arranged corresponding to the blanking port, and the first linkage member is used to drive one end of the guide plate near the blanking port to tilt downward.

[0016] By adopting the above technical solution, the debris on the grinding table is accelerated and guided into the material drop opening by utilizing the inclination of the guide plate, so as to improve the speed of collecting and processing the debris.

[0017] Preferably, the first linkage member includes a roller, a docking slide, and a gear set; the guide plate is hinged to the surface of the grinding table, the roller and the guide plate are arranged in a one-to-one correspondence, and the roller is rotatably connected to the side of the guide plate away from the corresponding blanking port, and the roller surface is provided with a convex surface, and the outer diameter of the roller at the convex surface is larger than the outer diameter of the roller away from the convex surface; all the roller ends are provided with a first gear, the side wall of the docking slide is provided with a first tooth groove for meshing with the first gear, and the docking slide and the side wall of the bracket are also provided with a second tooth groove, and the gear set is used to mesh with the second tooth groove, so that when the bracket is driven by the driving member to move back and forth, it drives the docking slide to move back and forth along the grinding table, thereby making the convex surface on the roller rotate to a position in contact with the guide plate.

[0018] By adopting the above technical solution, when the support plate is reciprocated by the driving member to drive the sandpaper to frictionally grind the grinding area of ​​the sheet metal, the roller rotates forward and reversely under the drive of the docking ring plate and the gear set, and the convex device contacts the guide plate during the rotation. Since the roller is located between the guide plate and the grinding table, and the outer diameter of the roller at the convex surface is larger than the outer diameter of other parts of the roller, the convex surface of the roller can push the guide plate to tilt the guide plate, thereby guiding the debris.

[0019] Preferably, a scraper is rotatably connected in the collection chamber, and the position directly below the drop-out port is located on the rotation path of the scraper, and the second linkage is used to drive the scraper to rotate.

[0020] By adopting the above technical solution, the scraper is arranged to reduce the accumulation of debris just below the drop opening, thereby affecting the smoothness with which the adsorbent sucks subsequent debris into the collection chamber.

[0021] Preferably, there are a plurality of scrapers, which are rotatably connected to the collection chamber via a rotating shaft, and the second linkage member includes a second gear sleeved on each rotating shaft, and the second gear is meshed with a second tooth groove of the docking slide.

[0022] By adopting the above technical solution, the movement of the docking slide is used to further drive the scraper to swing back and forth, and the scraper scrapes directly below the material drop opening during the reciprocating swing process to reduce the amount of debris accumulation directly below the material drop opening.

[0023] Preferably, at least one scraper has an end wall provided with bristles, and the filter screen is located on a rotation path where the scraper with the bristles is driven to rotate by the second linkage.

[0024] By adopting the above technical solution, when the scraper swings back and forth and scrapes just below the material drop port, its end can scrape the surface of the filter screen through the bristles to clean the filter screen and reduce the clogging of the filter screen, thereby optimizing the adsorption effect of the adsorbent on debris.

[0025] In summary, this application includes the following beneficial technical effects: The positioning component is used to fix the sheet metal part on the polishing table to achieve automatic positioning of the sheet metal part. The scanning module and the control module are then used to automatically scan and determine the polishing area of ​​the sheet metal part. Finally, the polishing component is controlled to polish the polishing area in a targeted manner, ultimately achieving precise polishing of the sheet metal part. The entire process reduces human participation, realizes automated polishing, and improves polishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a sheet metal automatic grinding device disclosed in an embodiment of the present application.

[0027] Figure 2 yes Figure 1 Cross-section view from medium AA perspective.

[0028] Figure 3 It is a structural block diagram of a sheet metal automatic grinding device disclosed in an embodiment of the present application.

[0029] Figure 4 yes Figure 1 Cross-section view from the perspective of the middle BB.

[0030] Figure 5 yes Figure 2 A schematic diagram for reflecting the positional relationship between the pressure plate and the bracket.

[0031] Figure 6 It is a schematic diagram used to illustrate the distribution positions of the forward scanning unit and the side scanning unit relative to the sheet metal part in the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram for illustrating the position of a grinding area on a sheet metal part in a first scanning area in a second scanning area in an embodiment of the present application.

[0033] Figure 8 It is a cross-sectional view used to reflect the positional relationship between the bracket and the docking slide in the embodiment of the present application.

[0034] Description of reference numerals: 1. grinding table; 11. collecting chamber; 12. material drop opening; 13. adsorption member; 131. filter screen; 132. purge pipe; 14. guide plate; 15. first linkage member; 151. roller; 1511. convex surface; 1512. first gear; 152. docking slide plate; 153. gear set; 1531. first tooth groove; 1532. second tooth groove; 16. scraper; 161. bristle; 17. second linkage member; 171. second gear; 2. positioning assembly; 21. substrate; 22. Positioning motor; 23. First slide plate; 24. Second slide plate; 25. First sliding part; 3. Grinding assembly; 31. Bracket; 32. Driving part; 33. Roller; 34. Rotating part; 35. Sanding paper; 351. Sanding section; 36. Pressure plate; 37. Moving part; 371. Lifting part; 372. Sliding block; 373. Third slide plate; 374. Second sliding part; 4. Sheet metal part; 5. Scanning module; 51. Forward scanning unit; 52. Side scanning unit; 6. Control module. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The present application embodiment discloses a sheet metal automatic grinding device. Figure 1 , Figure 2 and Figure 3 The automatic sheet metal grinding device includes a grinding table 1, a positioning component 2 and a grinding component 3 located above the grinding table 1, wherein the positioning component 2 is used to fix the sheet metal 4 and drive the sheet metal 4 to move and flip relative to the grinding table 1; the grinding component 3 is used to grind the sheet metal 4. It also includes a scanning module 5 and a control module 6, wherein the scanning module 5 is electrically connected to the control module 6 and is used to scan the surface of the sheet metal 4; the positioning component 2 and the grinding component 3 are both controlled by the control module 6, and the control module 6 is used to obtain the scanning structure obtained by scanning the scanning module 5, and determine the grinding area on the surface of the sheet metal 4, and is also used to control the grinding component 3 to grind the grinding area.

[0037] Reference Figure 1 and 2The positioning assembly 2 includes at least two symmetrically arranged positioning members, each of which includes a base plate 21, a positioning motor 22, a first slide plate 23, a second slide plate 24 and a first sliding component 25. The positioning motor 22 is installed above the grinding table 1, and the driving shaft of the positioning motor 22 is connected to the base plate 21 to drive the base plate 21 to rotate; the first slide plate 23 and the second slide plate 24 correspond to a first sliding component 25 respectively, and the first sliding component 25 can be specifically a motor screw rod combination structure, the first slide plate 23 is slidingly connected to the base plate 21 through the first sliding component 25, and the second slide plate 24 is slidingly connected to the first slide plate 23 through the first sliding component 25, and the sliding direction of the first slide plate 23 is parallel to the length direction of the grinding table 1, and the sliding direction of the second slide plate 24 is parallel to the width direction of the grinding table 1. The second slide plate 24 is perpendicular to the first slide plate 23, the sheet metal part 4 is mounted on the upper surface of the first slide plate 23, and the end wall of the sheet metal part 4 abuts against the side wall of the second slide plate 24.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The grinding assembly 3 is located above the positioning assembly 2 and the sheet metal part 4. The grinding assembly 3 includes a bracket 31, a driving member 32, and two rollers 33, a rotating member 34, a sandpaper 35, a pressing plate 36 and a moving member 37 arranged on the bracket 31. The driving member 32 can be specifically a cylinder. The driving end of the driving member 32 is connected to the bracket 31, and the length direction of the driving shaft of the driving member 32 and the length direction of the bracket 31 are parallel to the length direction of the grinding table 1, so as to drive the bracket 31 to slide back and forth through the driving member 32. The rollers 33 are rotatably connected to the bracket 31, and each end of the roller 33 corresponds to a rotating member 34. The rotating member 34 can be specifically a motor. The rotating member 34 is installed on the bracket 31, and the driving end of the rotating member 34 is connected to the corresponding end wall of the roller 33, so as to drive the roller 33 to rotate. The two rollers 33 are commonly wound with sandpaper 35 , and the sandpaper 35 includes a plurality of sanding sections 351 along its length direction, and different sanding sections 351 have different widths. The rollers 33 are driven to rotate by the rotating member 34 to achieve the conveyance of sanding sections 351 of different widths to the top of the sheet metal part 4 .

[0039] Reference Figure 2 , Figure 4 and Figure 5The pressing plate 36 is located above the sandpaper 35, and the moving part 37 includes a lifting part 371, a slider 372, a third slide plate 373 and a second sliding part 374; the slider 372 is located above the pressing plate 36, and the lifting part 371 is arranged between the slider 372 and the pressing plate 36. The lifting part 371 can be a combination structure of a motor screw rod to drive the pressing plate 36 to move up and down, and when the pressing plate 36 is lowered, the pressing plate 36 can press down the sandpaper 35 located directly below it to abut against the surface of the sheet metal part 4. The length direction of the third slider 372 is parallel to the width direction of the grinding table 1, and the slider 372 is slidably connected to the third slide plate 373 through the second sliding part 374. The third slide plate 373 is slidably connected to the bracket 31 along a direction parallel to the length direction of the grinding table 1 through the second sliding part 374.

[0040] Reference Figure 2 , Figure 3 and Figure 6 , the present application assumes that the scanning range of the scanning module 5 is much larger than the size of the sheet metal part 4, that is, the scanning area covers the entire sheet metal part 4. Specifically, the scanning module 5 includes a forward scanning unit 51 and a lateral scanning unit 52. Both the forward scanning unit 51 and the lateral scanning unit 52 can be camera devices. The forward scanning unit 51 is used to scan the upper surface of the sheet metal part 4 and generate a first scanning area; multiple lateral scanning units 52 can be arranged along the circumference of the sheet metal part 4, such as one at each end of the length direction and both sides of the width direction of the grinding table 1, to scan the side wall of the sheet metal part 4 and generate a second scanning area. Both the first scanning area and the second scanning area can be embodied in the form of images. Figure 6 The direction indicated by the dotted arrow is the scanning direction of the forward scanning unit 51 and the side scanning unit 52 .

[0041] Refer to 3. Figure 6 and Figure 7 The control module 6 is used to determine whether there is a polishing area consistent with the preset reference area in the first scanning area scanned by the forward scanning unit 51 (i.e. Figure 7 ), the preset reference area here may be an image of the surface of the sheet metal part 4 that needs to be polished, which is pre-entered into the control module 6; the control module 6 determines whether there is a polishing area by comparing the image.

[0042] Refer to 3. Figure 6 and Figure 7If it does not exist, the control module 6 can obtain the second scanning areas scanned by all the lateral scanning units 52 to determine whether there is any second scanning area containing a corresponding grinding area. If so, the positioning component 2 is controlled to drive the sheet metal part 4 to flip so that the surface of the sheet metal part 4 corresponding to the second scanning area is flipped to a vertically upward state. If so, the control module 6 obtains all the second scanning areas to determine whether the upper surface of the sheet metal part 4 at the grinding area photographed by the lateral scanning unit 52 is flat, that is, through the position of the grinding area in the length direction and width direction of the first scanning area, the position of the grinding area on the upper surface of the sheet metal part scanned by all the second scanning areas (that is, Figure 7 In the second scanning area, the line segment where the sheet metal part and the dotted line intersect is captured, and the position of the polishing area is respectively captured in the first scanning area and the second scanning area to generate an analysis result with the aforementioned captured images.

[0043] Then, by determining whether the upper edge in the second scanning area corresponding to the grinding area is a horizontal straight line, a determination result of whether the grinding areas are in the same plane is generated. If it is not a horizontal straight line, it is considered that they are not in the same plane. If it is a horizontal straight line, it is considered that they are in the same plane. The determination result is added to the analysis result and displayed through a touch screen that is pre-electrically connected to the control module 6. At the same time, all three-dimensional structural diagrams of the pressure plates 36 pre-stored in the control module 6 are displayed, so that the operator can select the pressure plate 36 that matches the grinding area, and install the corresponding pressure plate 36 on the bracket 31 to realize the selection of the pressure plate 36.

[0044] Reference Figure 2 , Figure 4 and Figure 8 A collecting chamber 11 is provided at the bottom of the grinding table 1, and a blanking port 12 connected to the collecting chamber 11 is provided on the surface of the grinding table 1 facing the sheet metal part 4; an adsorption component 13 is connected to the side wall of the collecting chamber 11, and the adsorption component 13 can specifically be a suction fan. The air inlet end of the adsorption component 13 is connected to the end wall of the collecting chamber 11 through a pipeline, and a filter screen 131 is provided at the pipe mouth of the pipe connected to the collecting chamber 11; the air outlet end of the adsorption component 13 is connected to a purge pipe 132, and the pipe mouth of the purge pipe 132 faces the sheet metal part 4.

[0045] The upper surface of the grinding table 1 near the blanking port 12 is rotatably connected with a guide plate 14, and the side of the guide plate 14 near the blanking port 12 is tilted downward. The grinding table 1 is also provided with a first linkage member 15, which includes a roller 151, a docking slide plate 152 and a gear set 153; the rollers 151 and the guide plates 14 are arranged one by one, and the rollers 151 are rotatably connected between the corresponding guide plates 14 and the grinding table 1, and each roller 151 has a convex surface 1511 on its surface, and the outer diameter of the roller 151 with the convex surface 1511 is greater than the outer diameter of the roller 151 away from the convex surface 1511.

[0046] The docking slide 152 is located at the end of the roller 151, and the docking slide 152 is slidably connected to the grinding table 1 in a direction parallel to the width direction of the grinding table 1; the surface of the docking slide 152 is provided with a first tooth groove 1531 along its length direction, and each end of the roller 151 is respectively fixedly sleeved with a first gear 1512, and the first gear 1512 is meshed with the first tooth groove 1531. The side wall of the docking slide 152 and the side wall of the bracket 31 are respectively provided with a second tooth groove 1532, and the gear set 153 includes two gears coaxially connected to the grinding table 1, and one of the gears is meshed with the second tooth groove 1532 on the bracket 31, and the other gear is meshed with the second tooth groove 1532 on the docking slide 152. When the bracket 31 is driven by the driving member 32 to reciprocate, the roller 151 will rotate under the drive of the first linkage member 15, and the convex surface 1511 on the roller 151 rotates to a position in contact with the guide plate 14 to increase the inclination angle of the guide plate 14.

[0047] There are also several scrapers 16 connected to the collection chamber 11 by a rotating shaft. A second linkage 17 is provided in the collection chamber 11. The second linkage 17 includes a second gear 171 sleeved on the rotating shaft of each scraper 16. The second gear 171 is meshed with the second tooth groove 1532 of the docking slide 152, so as to drive the scraper 16 to swing back and forth in the collection chamber 11 during the reciprocating sliding of the docking slide 152. There are several scrapers 16, and the position directly below each drop port 12 is at least located on the reciprocating swing path of one of the scrapers 16. There is at least one end wall brush 161 of the scraper 16, and the surface of the filter 131 is arc-shaped, which is located on the reciprocating swing path of the scraper 16 with the brush 161, so as to scrape and dredge the mesh of the filter 131 with the help of the brush 161.

[0048] The implementation principle of the automatic sheet metal grinding device of the embodiment of the present application is as follows: the sheet metal part 4 is installed on the grinding table 1 through the positioning component 2, and then the sheet metal part 4 is driven to move and flip through the positioning component 2, and in this process, the surface of the sheet metal part 4 is scanned by the scanning module 5, and after the grinding area on the surface of the sheet metal part 4 is determined, the sheet metal part 4 is driven to move and flip through the positioning component 2 so that the grinding area faces the direction of the sandpaper 35, and then the moving part 37 is moved, and the pressing plate 36 is pressed against the sandpaper 35, and the pressing plate can be moved on the pressing plate A plurality of negative pressure holes are provided on the lower surface of 36, and all the negative pressure holes are connected to the air inlet of the fan by means of pipes, so that the pressure plate 36 can absorb and fix the sandpaper 35 directly below it, and drive the sandpaper 35 to press down on the upper surface of the sheet metal part 4 with the grinding area, and then drive the bracket 31 to reciprocate in a direction parallel to the length direction of the grinding table 1 through the driving part 32, so that the sandpaper 35 and the pressure plate 36 can reciprocate relative to the sheet metal part 4, thereby realizing the grinding of the grinding area, improving the grinding efficiency and accurately grinding the grinding area.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic sheet metal grinding device, Features: The invention comprises a grinding table (1), a positioning component (2) and a grinding component (3) arranged on the grinding table (1), wherein the positioning component (2) is used to fix a sheet metal part (4) on the grinding table (1); and the grinding component (3) is used to grind the sheet metal part (4); and further comprises a scanning module (5) and a control module (6), wherein the scanning module (5) is electrically connected to the control module (6), and the positioning component (2) and the grinding component (3) are both controlled by the control module (6), wherein the scanning module (5) is used to scan the surface of the sheet metal part (4), and the control module (6) is used to obtain the scanning result obtained by the scanning module (5), determine the grinding area on the surface of the sheet metal part (4), and control the grinding component (3) to grind the grinding area.

2. The automatic sheet metal grinding device according to claim 1, Features: The grinding assembly (3) is located above the grinding table (1) and the sheet metal part (4), and comprises a bracket (31), a driving part (32), and two rollers (33), a rotating part (34), sandpaper (35), a pressure plate (36), and a moving part (37) arranged on the bracket (31); The roller (33) is rotatably connected to the bracket (31) via a rotating member (34); the sandpaper (35) is wound between the two rollers (33), and there are sanding sections (351) of different widths in the length direction of the sandpaper (35); the pressure plate (36) is attached to the upper surface of the sandpaper (35); the moving member (37) is used to drive the pressure plate (36) to rise or fall or move; the driving member (32) is used to drive the bracket (31) to move back and forth, so that the sandpaper (35) moves back and forth relative to the sheet metal member (4); the rotating member (34), the driving member (32) and the moving member (37) are all controlled by a control module (6).

3. The automatic sheet metal grinding device according to claim 2, Features: The positioning component (2) is used to drive the sheet metal part (4) to rotate, move and flip, so that the scanning module (5) can scan the entire surface of the sheet metal part (4); the scanning module (5) is used to scan the surface of the sheet metal part (4), and the control module (6) is used to obtain the scanning area scanned by the scanning module (5) and determine whether there is a grinding area consistent with the preset reference area in the scanning area. If not, the positioning component (2) is controlled to drive the sheet metal part (4) to perform movement, flip and rotation operations until there is a grinding area consistent with the preset reference area in the scanning area; if so, the positioning component (2) is controlled to drive the sheet metal part (4) to perform movement, flip and rotation operations so that the grinding area faces the frosted surface of the sandpaper (35).

4. The automatic sheet metal grinding device according to claim 3, Features: The scanning module (5) comprises a forward scanning unit (51) and a lateral scanning unit (52), wherein the forward scanning unit (51) is used to scan a side surface of the sheet metal part (4) facing the sandpaper (35), and the lateral scanning unit (52) is used to scan the surface of the sheet metal part (4) outside the scanning range of the forward scanning unit (51); the control module (6) is used to determine whether there is a grinding area consistent with a preset reference area in the first scanning area scanned by the forward scanning unit (51), and if not, control the positioning component (2) to drive the sheet metal part (4) to perform movement, flipping, and rotation operations until there is a grinding area consistent with the preset reference area in the first scanning area; If there is a grinding area, a second scanning area obtained by scanning the lateral scanning unit (52) is obtained, and based on the second scanning area, it is analyzed whether the surface of the sheet metal part (4) corresponding to the grinding area is in the same plane, and the analysis result is output so that the operator can know it; wherein the analysis result at least includes a determination result of whether it is in the same plane, and a pressure plate (36) structure that can be adapted to fit the grinding area.

5. The automatic sheet metal grinding device according to claim 2, Features: A collecting chamber (11) is provided at the bottom of the grinding table (1); a material drop opening (12) for communicating with the collecting chamber (11) is provided on the surface of the grinding table (1) facing the sheet metal part (4); a suction piece (13) is connected to the side wall of the collecting chamber (11); the suction piece (13) is used to evacuate air inside the collecting chamber (11) so as to form a negative pressure at the material drop opening (12); a filter screen (131) is provided at the suction end of the suction piece (13); a purge pipe (132) is connected to the air outlet end of the suction piece (13); and the nozzle of the purge pipe (132) faces the sheet metal part (4).

6. The automatic sheet metal grinding device according to claim 5, Features: A guide plate (14) and a first linkage member (15) are provided on the upper surface of the grinding table (1) near the blanking opening (12); the guide plate (14) is arranged corresponding to the blanking opening (12); and the first linkage member (15) is used to drive one end of the guide plate (14) near the blanking opening (12) to tilt downward.

7. The automatic sheet metal grinding device according to claim 6, Features: The first linkage member (15) comprises a roller (151), a docking slide plate (152), and a gear set (153); the guide plate (14) is hinged to the surface of the grinding table (1); the roller (151) and the guide plate (14) are arranged in a one-to-one correspondence, and the roller (151) is rotatably connected to a side of the guide plate (14) away from the corresponding blanking port (12); and a convex surface (1511) is provided on the surface of the roller (151); and the outer diameter of the roller (151) at the convex surface (1511) is larger than the outer diameter of the roller (151) at a point away from the convex surface (1511); The ends of all the rollers (151) are provided with a first gear (1512); the side wall of the docking slide plate (152) is provided with a first tooth groove (1531) for meshing with the first gear (1512); the side walls of the docking slide plate (152) and the bracket (31) are also provided with a second tooth groove (1532); the gear set (153) is used to mesh with the second tooth groove (1532) so as to drive the docking slide plate (152) to reciprocate along the grinding table (1) when the bracket (31) is driven by the driving member (32) to move back and forth, thereby causing the convex surface (1511) on the roller (151) to rotate to a position in contact with the guide plate (14).

8. The automatic sheet metal grinding device according to claim 7, Features: A scraper (16) is rotatably connected in the collection chamber (11), and the position directly below the drop opening (12) is located on the rotation path of the scraper (16), and the second linkage member (17) is used to drive the scraper (16) to rotate.

9. The automatic sheet metal grinding device according to claim 8, Features: There are a plurality of scrapers (16) which are rotatably connected to the collection chamber (11) via a rotating shaft. The second linkage member (17) comprises a second gear (171) sleeved on each rotating shaft. The second gear (171) is meshed with a second tooth groove (1532) of the docking slide plate (152).

10. The automatic sheet metal grinding device according to claim 8, Features: At least one scraper (16) has an end wall provided with bristles (161), and the filter screen (131) is located on a rotation path where the scraper (16) with the bristles (161) is driven by a second linkage (17) to rotate.

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