Sheet metal part polishing device and method

Abstract

The application discloses sheet metal polishing equipment and a method thereof, and belongs to the technical field of polishing, and comprises a multistage polishing module; the multistage polishing module comprises a rough polishing vibration tank, a fine polishing vibration tank and a polishing vibration tank, and further comprises a grinding material grading treatment mechanism; the grinding material grading treatment mechanism comprises a first vibration screen, a second vibration screen, a third vibration screen, a grinding material backflow assembly and a grinding material forward flow conveyor; through the multistage polishing module and the grinding material grading treatment mechanism, the fine grading and recycling of the grinding material are realized, the rough polishing, fine polishing and polishing processes are distributed to independent vibration tanks, and the grinding material with decreasing sizes is correspondingly used; through the layer-by-layer progressive mode, the surface treatment inconsistency caused by mixed grinding is avoided, and the uniformity and quality of the sheet metal surface grinding are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, specifically to a sheet metal polishing device and method. Background Technology

[0002] For large quantities of sheet metal parts, continuous grinding operations are usually carried out using a production line vibratory grinding machine.

[0003] Chinese patent CN115519465B discloses a through-type vibratory polishing machine, including a polishing machine body, which includes a left support base and a right support base. A front support plate and a rear support plate are respectively fixed to the upper surfaces of the left and right support bases. The lower ends of several first springs are fixed to the upper surfaces of the front and rear support plates, and the upper ends of the first springs are fixed to the bottom surface of the grinding groove. The grinding groove has an arc-shaped cross-section. A fixing plate is fixed between the left ends of the front and rear support plates. A motor is fixed to the fixing plate. Several vibrators are connected in series on the rotating shaft of the motor via universal joints. Eccentric blocks are fixed to both ends of the vibrator shaft, and fixing blocks are fixed to the vibrators. Connecting blocks are fixed to the left and right sides of the upper end of the fixing blocks, and the upper ends of the connecting blocks are fixedly connected to the bottom surface of the grinding groove. A discharge port is provided at the right end of the grinding groove. The machine also includes a sorting machine and an abrasive return conveyor belt, which greatly improves the polishing effect. However, this polishing machine still has the following technical problems:

[0004] 1. After long-term use, the size of abrasives will gradually decrease. When abrasives of different sizes are mixed, the smaller abrasives will fill the gaps between the larger abrasives, resulting in an increase in the overall packing density of the abrasives. This will cause the abrasives to tumble and flow poorly in the vibrating trough, reducing the grinding efficiency of sheet metal parts and making it difficult to ensure the consistency of grinding on the surface of sheet metal parts.

[0005] 2. After grinding, sheet metal parts will have metal shavings and grinding particles adhering to their surface. The conventional cleaning method is to spray the surface of the sheet metal parts, which is not only inefficient, but also makes it easy to have cleaning dead corners on the sheet metal parts. After drying, the residual shavings will adhere to the surface of the sheet metal parts, affecting the subsequent processing of the sheet metal parts.

[0006] Based on this, the present invention designs a sheet metal grinding equipment and method to solve the above problems. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a sheet metal grinding equipment and method.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A sheet metal grinding device, comprising a multi-stage polishing module;

[0010] The multi-stage polishing module includes a coarse grinding vibration tank, a fine grinding vibration tank, and a polishing vibration tank. The multi-stage polishing module also includes an abrasive grading and processing mechanism, which includes a first vibrating screen, a second vibrating screen, a third vibrating screen, an abrasive return component, and an abrasive forward flow conveyor. The first vibrating screen is installed between the discharge end of the coarse grinding vibration tank and the feed end of the fine grinding vibration tank. The second vibrating screen is installed between the discharge end of the fine grinding vibration tank and the feed end of the polishing vibration tank. The third vibrating screen is installed at the discharge end of the polishing vibration tank. The first, second, and third vibrating screens are used to screen out abrasive and allow the sheet metal parts to pass through the three screens and flow sequentially along the coarse grinding vibration tank, the fine grinding vibration tank, and the polishing vibration tank.

[0011] The first and second vibrating screens are double-outlet vibrating screens, and the third vibrating screen is a single-outlet vibrating screen. Each of the outlets of the third vibrating screen and one outlet of the first and second vibrating screens is equipped with an abrasive return assembly. The abrasive return assembly is used to return abrasive A, abrasive B, and abrasive C, which are separated from the sheet metal parts, to the coarse grinding vibrating tank, the fine grinding vibrating tank, and the polishing vibrating tank, respectively. Each of the other outlets of the first and second vibrating screens is equipped with an abrasive forward flow conveyor. The abrasive forward flow conveyor is used to transport abrasive B generated by the wear of abrasive A in the coarse grinding vibrating tank to the fine grinding vibrating tank, and to transport abrasive C generated by the wear of abrasive B in the fine grinding vibrating tank to the polishing vibrating tank.

[0012] Furthermore, it also includes a cleaning and drying module, which includes an all-around cleaning mechanism and a tunnel drying oven. The feed end of the all-around cleaning mechanism is connected to the discharge end of the third vibrating screen, and the discharge end of the all-around cleaning mechanism is connected to the feed end of the tunnel drying oven.

[0013] Furthermore, the all-around cleaning mechanism includes a frame, a cover, and a conveying assembly. The cover is fixedly installed on the upper end of the frame, and the conveying assembly is installed between the frame and the cover. Two sets of conveying assemblies are arranged vertically, and the two sets of conveying assemblies form a conveying channel for cleaning sheet metal.

[0014] Furthermore, the conveying assembly includes sprockets, chains, mounting blocks, rotating rods, and brush rollers. Two sets of sprockets are symmetrically rotated and mounted on both sides of the frame. The sprockets on opposite sides are fixedly mounted on the drive rod. A chain is wound around the two sprockets on the same side, and the sprockets and chains are meshed together. A support rail is fixedly mounted on the frame to support the mounting blocks and enable them to move in a directional manner. Multiple mounting blocks are evenly fixedly mounted at equal intervals along the chain's movement trajectory on the inner side of the chain. A rotating rod is rotatably mounted between the mounting blocks on both sides via bearings, and the brush rollers are sleeved on the outer side of the rotating rods.

[0015] Furthermore, the brush roller is connected to the rotating rod via a key, allowing the brush roller to rotate synchronously with the rotating rod and slide along the axial direction of the rotating rod.

[0016] Furthermore, the all-around cleaning mechanism also includes a rotary brush washing assembly, a shaking brush washing assembly, and a spraying device. Each conveying assembly has a rotary brush washing assembly and a shaking brush washing assembly installed on both sides. The rotary brush washing assembly and the shaking brush washing assembly are used to make the brush roller rotate and the brush roller reciprocate along the rotating rod, respectively, during the process of the chain driving the brush roller to move to transport the sheet metal parts. Two sets of spraying devices are fixedly installed on the frame, and the spraying ends of the spraying devices are arranged opposite each other to rinse the upper and lower surfaces of the sheet metal parts.

[0017] Furthermore, the rotary brushing assembly includes a first rubber wheel and a rolling track. The first rubber wheel is fixedly installed at the end of the rotating rod, and the rolling track is fixedly connected to the frame and tumbledly connected to the first rubber wheel. The rolling track is located between two conveying assemblies, so that when the first rubber wheels on the two conveying assemblies roll on the rolling track, the brush rollers of the two conveying assemblies roll in opposite directions.

[0018] Furthermore, the vibrating brush washing assembly includes a second rubber wheel, a vibrating track, and a connecting plate. The connecting plate is slidably connected to the mounting block along the axial direction of the rotating rod via a limiting component. One end of the connecting plate is rotatably connected to the end of the brush roller via a bearing, and the other end of the connecting plate is rotatably connected to the second rubber wheel. The vibrating track is fixedly connected to the frame and is rotatably connected to the second rubber wheel.

[0019] Furthermore, the contact surface between the vibrating track and the second rubber wheel is set in a wave shape, and the vibrating tracks on both sides of the rotating rod are arranged opposite to each other, so that the second rubber wheel and the vibrating track cooperate to achieve the reciprocating vibrating effect of the brush roller; the concave and convex structures of the vibrating tracks of the two conveying components are opposite, so that the vibrating tracks of the two conveying components can vibrate synchronously in opposite directions.

[0020] To better achieve the objectives of this invention, this invention also provides a method for using a sheet metal grinding device, comprising the following steps:

[0021] Step 1: The sheet metal part will be placed into the rough grinding vibration groove;

[0022] Step 2: The sheet metal parts flow sequentially along the coarse grinding vibration groove, the first vibrating screen, the fine grinding vibration groove, the second vibrating screen, the polishing vibration groove, and the third vibrating screen. The abrasive material that has been ground is screened. The abrasive forward flow conveyor replenishes the small-sized abrasive material after wear to its downstream vibration groove, and the abrasive return component returns the remaining abrasive material to its upstream vibration groove.

[0023] Step 3: After the sheet metal parts have undergone rough grinding, fine grinding and polishing in sequence, they enter between two conveying components. The brush rollers of the two conveying components work together to transport the sheet metal parts towards the tunnel drying oven.

[0024] Step 4: During the conveying process, the spraying device washes the upper and lower surfaces of the sheet metal parts. The rotating brush washing component drives the brush roller to rotate, and the shaking brush washing component drives the lower brush roller to slide back and forth along the axis of the rotating rod. The brush rollers of the two conveying components rotate in opposite directions and slide in opposite directions, so as to efficiently wash the upper and lower surfaces of the sheet metal parts, and fully remove the metal debris and abrasive debris adhering to the surface of the sheet metal parts during the grinding process.

[0025] Step 5: The sheet metal parts are dried in the tunnel drying oven and then discharged.

[0026] Compared with the prior art, the beneficial effects of this invention are as follows: 1. By setting up a multi-level polishing module and an abrasive grading and processing mechanism, the abrasive is finely graded and recycled. The coarse grinding, fine grinding and polishing processes are assigned to independent vibration tanks, and abrasives with decreasing size are used accordingly. This step-by-step approach avoids the inconsistency of surface treatment caused by mixed grinding, and significantly improves the uniformity and quality of surface grinding of sheet metal parts.

[0027] 2. The cleaning channel is formed by two sets of upper and lower conveying components. During the conveying of the sheet metal parts, the brush rollers rotate due to the rotation of the brushing component, while the brush rollers reciprocate axially due to the shaking component. Under the combined motion of rotation and axial reciprocating shaking, and with the opposite motion patterns of the upper and lower sets of brush rollers, the upper and lower surfaces and edges of the sheet metal parts are cleaned in a multi-dimensional and high-intensity manner, which greatly improves cleaning efficiency and cleanliness, and provides a good surface foundation for subsequent processing of the sheet metal parts. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a sheet metal grinding device according to the present invention. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of a sheet metal grinding device according to the present invention. Figure 2 ;

[0031] Figure 3 The three-dimensional structure of the all-around cleaning mechanism of the present invention Figure 1 ;

[0032] Figure 4 This is a top view of the all-around cleaning mechanism of the present invention;

[0033] Figure 5 The three-dimensional structure of the all-around cleaning mechanism of the present invention Figure 2 ;

[0034] Figure 6 The three-dimensional structure of the all-around cleaning mechanism of the present invention Figure 3 ;

[0035] Figure 7 A perspective view of the all-around cleaning mechanism of the present invention with a portion cut away;

[0036] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0037] Figure 9 This is a schematic diagram of the structure of the brush roller and its accessories of the present invention.

[0038] The labels in the diagram represent:

[0039] 10. Coarse grinding vibrating trough; 11. Fine grinding vibrating trough; 12. Polishing vibrating trough; 2. Abrasive grading and processing mechanism; 21. First vibrating screen; 22. Second vibrating screen; 23. Third vibrating screen; 24. Abrasive cleaning machine; 25. Abrasive return conveyor; 26. Abrasive unloading trough; 27. Abrasive forward flow conveyor; 3. All-around cleaning mechanism; 31. Frame; 32. Cover; 33. Conveying assembly; 331. Sprocket; 332. Chain; 333. Mounting block; 334. Rotating rod; 335. Brush roller; 336. Support rail; 34. Rotary brushing assembly; 341. First rubber wheel; 342. Rolling rail; 35. Shaking brushing assembly; 351. Second rubber wheel; 352. Shaking rail; 353. Connecting plate; 354. Limiting assembly; 36. Spraying device; 4. Tunnel drying oven. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] In some embodiments, please refer to the accompanying drawings. Figures 1-9 A sheet metal grinding equipment, comprising a multi-stage polishing module and a cleaning and drying module;

[0042] The multi-stage polishing module includes a coarse grinding vibration tank 10, a fine grinding vibration tank 11, and a polishing vibration tank 12. The coarse grinding vibration tank 10, the fine grinding vibration tank 11, and the polishing vibration tank 12 contain abrasives A, abrasives B, and abrasives C, respectively. Abrasives A, abrasives B, and abrasives C are made of the same material and their particle size decreases sequentially.

[0043] The multi-stage polishing module also includes an abrasive grading and processing mechanism 2. The abrasive grading and processing mechanism 2 includes a first vibrating screen 21, a second vibrating screen 22, a third vibrating screen 23, an abrasive return assembly, and an abrasive forward flow conveyor 27. The first vibrating screen 21 is installed between the discharge end of the coarse grinding vibrating trough 10 and the feed end of the fine grinding vibrating trough 11. The second vibrating screen 22 is installed between the discharge end of the fine grinding vibrating trough 11 and the feed end of the polishing vibrating trough 12. The third vibrating screen 23 is installed at the discharge end of the polishing vibrating trough 12. The first vibrating screen 21, the second vibrating screen 22, and the third vibrating screen 23 are used to screen out abrasive and allow sheet metal parts to pass through the three and flow sequentially along the coarse grinding vibrating trough 10, the fine grinding vibrating trough 11, and the polishing vibrating trough 12.

[0044] The first vibrating screen 21 and the second vibrating screen 22 are double-outlet vibrating screens, and the third vibrating screen 23 is a single-outlet vibrating screen. Each of the outlets of the third vibrating screen 23 and one outlet of the first vibrating screen 21 and the second vibrating screen 22 is equipped with an abrasive return assembly. The abrasive return assembly is used to return the abrasive A, abrasive B and abrasive C separated from the sheet metal parts to the coarse grinding vibrating tank 10, the fine grinding vibrating tank 11 and the polishing vibrating tank 12, respectively. Each of the other outlets of the first vibrating screen 21 and the second vibrating screen 22 is equipped with an abrasive forward flow conveyor 27. The abrasive forward flow conveyor 27 is used to convey the abrasive B generated in the coarse grinding vibrating tank 10 to the fine grinding vibrating tank 11 and the abrasive C generated in the fine grinding vibrating tank 11 to the polishing vibrating tank 12.

[0045] The cleaning and drying module includes an all-around cleaning mechanism 3 and a tunnel drying oven 4. The feed end of the all-around cleaning mechanism 3 is connected to the discharge end of the third vibrating screen 23, and the discharge end of the all-around cleaning mechanism 3 is connected to the feed end of the tunnel drying oven 4.

[0046] In this embodiment, the coarse grinding vibration tank 10, the fine grinding vibration tank 11, and the polishing vibration tank 12 all adopt a straight groove type vibration grinding machine. The sheet metal parts, grinding stones, and grinding fluid will make spiral rolling motions along the direction of the tank body. Through the continuous and high-frequency relative motion and friction between the sheet metal parts and the abrasive, the cutting of burrs on the surface of the sheet metal parts, the rounding of sharp edges, and the polishing of the surface are achieved.

[0047] In this embodiment, the lengths of the coarse grinding vibration groove 10, the fine grinding vibration groove 11, and the polishing vibration groove 12 increase sequentially, so that the dwell time of the sheet metal part in the three grooves gradually increases, ensuring the uniformity of the abrasive grinding on the surface of the sheet metal part.

[0048] In this invention, the sheet metal parts to be processed are first placed into the coarse grinding vibration tank 10, and automatically flow sequentially along the coarse grinding vibration tank 10, the first vibrating screen 21, the fine grinding vibration tank 11, the second vibrating screen 22, the polishing vibration tank 12, and the third vibrating screen 23. Thus, with the cooperation of the coarse grinding vibration tank 10, the fine grinding vibration tank 11, and the polishing vibration tank 12, the sheet metal parts undergo coarse grinding, fine grinding, and polishing processes in sequence. By assigning different stages of the sheet metal surface treatment to different vibration tanks, the grinding efficiency and grinding quality of the sheet metal parts are significantly improved. The consistency of the sheet metal surface treatment is ensured through a progressive process. At the same time, the abrasive is graded, and the abrasive that has become smaller due to wear is automatically separated and transported to its downstream process. This avoids the phenomenon of mixed abrasive of different sizes causing the medium in the vibration tank to tumble and flow poorly, thereby resulting in inconsistent grinding results on the surface of the sheet metal parts.

[0049] The abrasive reflux assembly includes an abrasive cleaner 24, an abrasive reflux conveyor 25, and an abrasive discharge trough 26. The discharge end of the abrasive cleaner 24 is located above the feed end of the abrasive reflux conveyor 25, and the discharge end of the abrasive reflux conveyor 25 is located above the feed end of the abrasive discharge trough 26. The abrasive cleaner 24 is used to receive the abrasive after screening with the sheet metal parts, and through the cooperation of the abrasive reflux conveyor 25 and the abrasive discharge trough 26, the abrasive is sent back from the discharge end of the coarse grinding vibration trough 10, the fine grinding vibration trough 11, or the polishing vibration trough 12 to its feed end, so as to realize the recycling of the abrasive.

[0050] In this embodiment, the abrasive cleaning machine 24 adopts a shaftless drum screen with a spray structure, which efficiently separates the metal debris and abrasive fragments from the abrasive surface after the grinding operation.

[0051] In this embodiment, the abrasive return conveyor 25 is a continuous plate lifting conveyor with partitions, which can achieve stable lifting and return of the recycled abrasive.

[0052] In this embodiment, the abrasive forward conveyor 27 adopts a screw elevator, which enables the abrasive to be smoothly conveyed to the vibrating trough downstream.

[0053] The all-round cleaning mechanism 3 includes a frame 31, a cover 32 and a conveying assembly 33. The cover 32 is fixedly installed on the upper end of the frame 31. The conveying assembly 33 is installed between the frame 31 and the cover 32. Two sets of the conveying assembly 33 are arranged vertically, and the two sets of conveying assemblies 33 form a conveying channel for cleaning sheet metal.

[0054] The conveying assembly 33 includes sprockets 331, chains 332, mounting blocks 333, rotating rods 334, and brush rollers 335. Two sets of sprockets 331 are symmetrically rotated and mounted on both sides of the frame 31. The sprockets 331 on the opposite side are fixedly mounted on the drive rod. A chain 332 is wound between the two sprockets 331 on the same side, and the sprockets 331 and the chain 332 are meshed together. A support rail 336 is fixedly mounted on the frame 31. The support rail 336 is used to support the mounting blocks 333 and enable the mounting blocks 333 to move in a specific direction. A drive motor (not shown in the figure) for driving the drive rod to rotate is also fixedly mounted on the frame 31.

[0055] Multiple mounting blocks 333 are evenly and uniformly fixedly installed on the inner side of the chain 332 along the movement trajectory of the chain 332; a rotating rod 334 is rotatably installed between the mounting blocks 333 on both sides through bearings; a brush roller 335 is sleeved on the outside of the rotating rod 334, and the brush roller 335 is connected to the rotating rod 334 through a key, so that the brush roller 335 and the rotating rod 334 rotate synchronously and can slide along the axial direction of the rotating rod 334;

[0056] The all-around cleaning mechanism 3 also includes a rotary brush washing assembly 34, a shaking brush washing assembly 35, and a spraying device 36. Each conveying assembly 33 has a rotary brush washing assembly 34 and a shaking brush washing assembly 35 installed on both sides. The rotary brush washing assembly 34 and the shaking brush washing assembly 35 are used to make the brush roller 335 rotate and the brush roller 335 reciprocate along the rotating rod 334 respectively during the process of the chain 332 driving the brush roller 335 to move to transport the sheet metal parts. Two sets of spraying devices 36 are fixedly installed on the frame 31, and the spraying ends of the spraying devices 36 are arranged opposite each other to rinse the upper and lower surfaces of the sheet metal parts.

[0057] In this invention, the chains 332 of the two conveying components 33 move in opposite directions. After the polished sheet metal parts are moved between the two conveying components 33, they are conveyed towards the tunnel drying oven 4 by the brush rollers 335 of the two conveying components 33. During the conveying process, the brush rollers 335 rotate under the action of the rotating brushing component 34, and the brush rollers 335 of the two conveying components 33 rotate in opposite directions, forming a brushing effect on the upper and lower surfaces of the sheet metal parts without affecting the conveying effect of the sheet metal parts. At the same time, under the action of the shaking brushing component 35, the brush rollers 335 slide back and forth along the axis of the rotating rod 334, and the sliding directions of the brush rollers 335 of the two conveying components 33 are always opposite, further increasing the brushing effect on the sheet metal parts, so that the metal chips and abrasive chips adhering to the surface of the sheet metal parts during the polishing process are fully peeled off, which facilitates the subsequent operations after the sheet metal parts are dried in the tunnel drying oven 4.

[0058] The rotary brushing assembly 34 includes a first rubber wheel 341 and a rolling track 342. The first rubber wheel 341 is fixedly installed at the end of the rotating rod 334, and the rolling track 342 is fixedly connected to the frame 31. The rolling track 342 is rotatably connected to the first rubber wheel 341. The rolling track 342 is located between two conveying assemblies 33, so that when the first rubber wheel 341 on the two conveying assemblies 33 rolls on the rolling track 342, the brush rollers 335 of the two conveying assemblies 33 roll in opposite directions.

[0059] The vibrating brush washing assembly 35 includes a second rubber wheel 351, a vibrating track 352, and a connecting plate 353. The connecting plate 353 is slidably connected to the mounting block 333 along the axial direction of the rotating rod 334 via a limiting assembly 354. One end of the connecting plate 353 is rotatably connected to the end of the brush roller 335 via a bearing, and the other end of the connecting plate 353 is rotatably connected to the second rubber wheel 351. The vibrating track 352 is fixedly connected to the frame 31 and is tactilely connected to the second rubber wheel 351. In this embodiment, the limiting assembly 354 adopts a sliding rod and sliding sleeve limiting structure.

[0060] The contact surface between the vibrating track 352 and the second rubber wheel 351 is set in a wave shape. The vibrating tracks 352 on both sides of the rotating rod 334 are arranged opposite to each other, so that the second rubber wheel 351 and the vibrating track 352 cooperate to achieve the reciprocating vibrating effect of the brush roller 335. The concave and convex structures of the vibrating tracks 352 of the two conveying components 33 are opposite, so that the vibrating tracks 352 of the two conveying components 33 can vibrate synchronously in opposite directions.

[0061] In this invention, when the chain 332 drives the brush roller 335 to move to transport sheet metal parts, the first rubber wheel 341 rolls on the rolling track 342 to rotate the rotating rod 334, which in turn causes the brush roller 335 to rotate. The brush rollers 335 of the two conveying components 33 rotate in opposite directions to perform brushing operations on the sheet metal parts. Meanwhile, the second rubber wheel 351 rolls on the shaking track 352, causing the connecting plate 353 to drive the brush roller 335 to shake under the limiting action of the limiting component 354. Thus, the brush roller 335 always performs a compound motion of rotation and axial shaking during the conveying of sheet metal parts, and the rotation direction and shaking direction of the brush rollers 335 of the upper and lower conveying components 33 are always synchronously opposite, achieving efficient brushing of sheet metal parts with the cooperation of the spray device 36.

[0062] In some embodiments, such as Figures 1-9 As shown, in a preferred embodiment of the present invention, the use of a sheet metal grinding device includes the following steps:

[0063] Step 1: Place the sheet metal part into the rough grinding vibration groove 10;

[0064] Step 2: The sheet metal parts flow sequentially along the coarse grinding vibration groove 10, the first vibrating screen 21, the fine grinding vibration groove 11, the second vibrating screen 22, the polishing vibration groove 12 and the third vibrating screen 23. The abrasive material that has been ground is screened. The abrasive forward flow conveyor 27 replenishes the small-sized abrasive material after wear to its downstream vibration groove. The abrasive return component returns the remaining abrasive material to its upstream vibration groove.

[0065] Step 3: After the sheet metal parts are subjected to coarse grinding, fine grinding and polishing in sequence, they enter between two conveying components 33. The brush rollers 335 of the two conveying components 33 cooperate to convey the sheet metal parts towards the tunnel drying oven 4.

[0066] Step 4: During the conveying process, the spraying device 36 washes the upper and lower surfaces of the sheet metal parts. The rotating brush washing component 34 drives the brush roller 335 to rotate. The shaking brush washing component 35 drives the lower brush roller 335 to slide back and forth along the axis of the rotating rod 334. The brush rollers 335 of the two conveying components 33 rotate in opposite directions and slide in opposite directions, so as to efficiently wash the upper and lower surfaces of the sheet metal parts and fully remove the metal debris and abrasive debris adhering to the surface of the sheet metal parts during the grinding process.

[0067] Step 5: The sheet metal parts are dried inside the tunnel drying oven 4 and then discharged.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sheet metal grinding device, comprising a multi-stage polishing module, characterized in that: The multi-stage polishing module includes a coarse grinding vibration tank (10), a fine grinding vibration tank (11), and a polishing vibration tank (12). The multi-stage polishing module also includes an abrasive grading and processing mechanism (2). The abrasive grading and processing mechanism (2) includes a first vibrating screen (21), a second vibrating screen (22), a third vibrating screen (23), an abrasive return assembly, and an abrasive forward flow conveyor (27). The first vibrating screen (21) is installed between the discharge end of the coarse grinding vibration tank (10) and the feed end of the fine grinding vibration tank (11). The second vibrating screen (22) is installed between the discharge end of the fine grinding vibration tank (11) and the feed end of the polishing vibration tank (12). The third vibrating screen (23) is installed at the discharge end of the polishing vibration tank (12). The first vibrating screen (21), the second vibrating screen (22), and the third vibrating screen (23) are used to screen out abrasive and allow sheet metal parts to pass through the three and flow sequentially along the coarse grinding vibration tank (10), the fine grinding vibration tank (11), and the polishing vibration tank (12). The first vibrating screen (21) and the second vibrating screen (22) are double-outlet vibrating screens, and the third vibrating screen (23) is a single-outlet vibrating screen. The outlet of the third vibrating screen (23) and one outlet of the first vibrating screen (21) and the second vibrating screen (22) are each equipped with an abrasive return assembly. The abrasive return assembly is used to return the abrasive A, abrasive B and abrasive C separated from the sheet metal parts to the coarse grinding vibrating tank (10), the fine grinding vibrating tank (11) and the polishing vibrating tank (12) respectively. The other outlet of the first vibrating screen (21) and the second vibrating screen (22) are each equipped with an abrasive forward flow conveyor (27). The abrasive forward flow conveyor (27) is used to transport the abrasive B generated in the coarse grinding vibrating tank (10) to the fine grinding vibrating tank (11) and the abrasive C generated in the fine grinding vibrating tank (11) to the polishing vibrating tank (12).

2. The sheet metal grinding equipment according to claim 1, characterized in that, It also includes a cleaning and drying module, which includes an all-around cleaning mechanism (3) and a tunnel drying oven (4). The feed end of the all-around cleaning mechanism (3) is connected to the discharge end of the third vibrating screen (23), and the discharge end of the all-around cleaning mechanism (3) is connected to the feed end of the tunnel drying oven (4).

3. The sheet metal grinding equipment according to claim 2, characterized in that, The all-around cleaning mechanism (3) includes a frame (31), a cover (32) and a conveying assembly (33). The cover (32) is fixedly installed on the upper end of the frame (31). The conveying assembly (33) is installed between the frame (31) and the cover (32). There are two sets of conveying assemblies (33) arranged vertically. The two sets of conveying assemblies (33) form a conveying channel for cleaning sheet metal.

4. The sheet metal grinding equipment according to claim 3, characterized in that, The conveying assembly (33) includes sprockets (331), chains (332), mounting blocks (333), rotating rods (334), and brush rollers (335). Two sets of sprockets (331) are symmetrically rotated and installed on both sides of the frame (31). The sprockets (331) on the opposite side are fixedly installed on the drive rod. A chain (332) is wound around the two sprockets (331) on the same side. The sprockets (331) and the chain (332) are meshed and connected. A support rail (336) is fixedly installed on the frame (31). The support rail (336) is used to support the mounting blocks (333) and enable the mounting blocks (333) to move in a directional manner. Multiple mounting blocks (333) are evenly fixedly installed on the inner side of the chain (332) along the movement trajectory of the chain (332). A rotating rod (334) is rotatably installed between the mounting blocks (333) on both sides through bearings. The brush rollers (335) are sleeved on the outer side of the rotating rods (334).

5. The sheet metal grinding equipment according to claim 4, characterized in that, The brush roller (335) is connected to the rotating rod (334) by a key, so that the brush roller (335) and the rotating rod (334) rotate synchronously and can slide along the axial direction of the rotating rod (334).

6. The sheet metal grinding equipment according to claim 5, characterized in that, The all-around cleaning mechanism (3) also includes a rotating brush washing assembly (34), a shaking brush washing assembly (35), and a spraying device (36). Each conveying assembly (33) is equipped with a rotating brush washing assembly (34) and a shaking brush washing assembly (35) on both sides. The rotating brush washing assembly (34) and the shaking brush washing assembly (35) are used to make the brush roller (335) rotate and the brush roller (335) reciprocate along the rotating rod (334) respectively during the process of the chain (332) driving the brush roller (335) to move to transport the sheet metal parts. Two sets of spraying devices (36) are fixedly installed on the frame (31), and the spraying ends of the spraying devices (36) are arranged opposite each other to rinse the upper and lower surfaces of the sheet metal parts.

7. The sheet metal grinding equipment according to claim 6, characterized in that, The rotating brushing assembly (34) includes a first rubber wheel (341) and a rolling track (342). The first rubber wheel (341) is fixedly installed at the end of the rotating rod (334). The rolling track (342) is fixedly connected to the frame (31) and is tactilely connected to the first rubber wheel (341). The rolling track (342) is located between two conveying assemblies (33), so that when the first rubber wheel (341) on the two conveying assemblies (33) rolls on the rolling track (342), the brush rollers (335) of the two conveying assemblies (33) roll in opposite directions.

8. The sheet metal grinding equipment according to claim 7, characterized in that, The vibrating brush washing assembly (35) includes a second rubber wheel (351), a vibrating track (352), and a connecting plate (353). The connecting plate (353) is slidably connected to the mounting block (333) along the axial direction of the rotating rod (334) via a limiting assembly (354). One end of the connecting plate (353) is rotatably connected to the end of the brush roller (335) via a bearing, and the other end of the connecting plate (353) is rotatably connected to the second rubber wheel (351). The vibrating track (352) is fixedly connected to the frame (31), and the vibrating track (352) is rotatably connected to the second rubber wheel (351).

9. The sheet metal grinding equipment according to claim 8, characterized in that, The contact surface between the vibrating track (352) and the second rubber wheel (351) is set to a wave shape. The vibrating tracks (352) on both sides of the rotating rod (334) are arranged opposite to each other, so that the second rubber wheel (351) and the vibrating track (352) cooperate to achieve the reciprocating vibrating effect of the brush roller (335). The concave and convex structures of the vibrating tracks (352) of the two conveying components (33) are opposite, so that the vibrating tracks (352) of the two conveying components (33) can vibrate synchronously in opposite directions.

10. A method for grinding sheet metal parts, using the sheet metal grinding equipment described in claim 9, characterized in that, Includes the following steps: Step 1: The sheet metal part will be placed into the rough grinding vibration groove (10); Step 2: The sheet metal parts flow sequentially along the coarse grinding vibration groove (10), the first vibrating screen (21), the fine grinding vibration groove (11), the second vibrating screen (22), the polishing vibration groove (12), and the third vibrating screen (23). The abrasive material that has been ground is screened. The abrasive forward flow conveyor (27) replenishes the small-sized abrasive material after wear to its downstream vibration groove. The abrasive return component returns the remaining abrasive material to its upstream vibration groove. Step 3: After the sheet metal parts are subjected to coarse grinding, fine grinding and polishing in sequence, they enter between two conveying components (33). The brush rollers (335) of the two conveying components (33) work together to convey the sheet metal parts toward the tunnel drying oven (4). Step 4: During the conveying process, the spraying device (36) washes the upper and lower surfaces of the sheet metal parts. The rotating brush washing component (34) drives the brush roller (335) to rotate. The shaking brush washing component (35) drives the lower brush roller (335) to slide back and forth along the axis of the rotating rod (334). The brush rollers (335) of the two conveying components (33) rotate in opposite directions and slide in opposite directions, so as to efficiently wash the upper and lower surfaces of the sheet metal parts, so that the metal chips and abrasive chips adhering to the surface of the sheet metal parts during the grinding process are fully removed. Step 5: The sheet metal parts are dried in the tunnel drying oven (4) and then discharged.

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