Mechanical part grinding and polishing device

Abstract

The invention relates to the technical field of polishing devices, in particular to a mechanical part grinding and polishing device. Comprising a rack which is provided with a mounting groove; the controller is mounted on the side surface of the rack; the conveyor is mounted in the mounting groove; the fixing plates are symmetrically connected to the top of the rack; the lifting frame is connected to the fixed plate in a sliding manner; the electric push rod is installed on the side face of the fixing plate, and a telescopic rod of the electric push rod is connected with the lifting frame; the sliding blocks are symmetrically connected to the lifting frame at intervals in a sliding manner; the electric roller is mounted on the sliding block; and the abrasive paper is connected to the electric roller. A plurality of abrasive paper with gradually increased meshes and a matched electric roller are arranged and matched with a conveyor and a supporting wheel to achieve automatic transferring and positioning of workpieces among rough grinding, medium grinding and accurate grinding procedures, and meanwhile, a liquid storage tank, a connecting cylinder and a spray pipe in the feeding assembly move in the movement process of a lifting frame; polishing oil is automatically and evenly sprayed to the surface of abrasive paper through relative displacement of the piston plate and the connecting cylinder, and manual intervention is not needed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing devices, and particularly relates to a mechanical part grinding and polishing device. BACKGROUND

[0002] In the field of mechanical manufacturing and processing, the surface quality of mechanical parts directly affects their performance, service life and appearance, so grinding and polishing are indispensable key processes in the production process. At present, the surface treatment of mechanical parts generally uses sandpaper for step-by-step grinding to remove burrs, scratches and surface unevenness, and then polishing is performed to obtain smooth or even mirror surface effect.

[0003] The conventional grinding and polishing process usually relies on multiple independent or segmented devices, each equipped with sandpaper of a specific mesh, for completing different stages of processing tasks such as rough grinding, medium grinding and fine grinding. In actual operation, in order to achieve the ideal surface finish, multiple sandpapers from low mesh to high mesh must be used to process the parts in sequence, which means that the operator needs to repeatedly transfer the workpiece between different devices and manually replace the sandpaper or adjust the device parameters, and the whole process is tedious and time-consuming. Especially when entering the fine polishing stage, in order to improve the polishing effect and reduce friction heat, it is often necessary to manually add polishing oil and other auxiliary media in a timely manner. This manual intervention not only increases the labor intensity, but also easily affects the final polishing quality due to uneven addition or improper timing, and even causes defects such as burns or scratches on the surface of the parts. In addition, frequent manual operation also reduces the degree of automation of the production line, making it difficult to achieve continuous and batch production, resulting in low overall processing efficiency and prolonged production cycle. SUMMARY

[0004] Therefore, the present application provides a mechanical part grinding and polishing device, which can overcome the shortcomings of the prior art that the operator needs to repeatedly transfer the workpiece between different devices and manually add polishing oil and other auxiliary media when grinding and polishing the workpiece, which is troublesome and has low work efficiency.

[0005] The technical scheme of the present application is as follows: a mechanical part grinding and polishing device, comprising: a rack, the rack is provided with a mounting groove; a controller installed on the side of the rack; a conveyor installed in the mounting groove; a fixed plate symmetrically connected to the top of the rack; a lifting frame slidingly connected to the fixed plate; an electric push rod installed on the side of the fixed plate, and the extension rod of the electric push rod is connected with the lifting frame; a sliding block symmetrically and spacedly slidingly connected to the lifting frame; an electric roller installed on the sliding block; sandpaper connected to the electric roller; a supporting assembly provided on the rack for stably supporting the workpiece; and a feeding assembly provided on the lifting frame for adding polishing oil to the sandpaper.

[0006] As a further preferred scheme, the supporting assembly comprises a supporting plate connected to the inner wall of the mounting groove, and the conveying belt of the conveyor slides through the upper part of the supporting plate; connecting blocks are connected to the outer side of the conveying belt of the conveyor in a circumferential interval; and supporting wheels are rotatably connected to the connecting blocks.

[0007] As a further preferred scheme, the feeding assembly comprises a liquid storage tank symmetrically connected to the top of the lifting frame; a connecting cylinder symmetrically connected to the inside of the liquid storage tank, and a plurality of circular holes are circumferentially spaced apart on the connecting cylinder; a spray pipe symmetrically mounted on the lifting frame; a connecting pipe having two ends respectively connected to the spray pipe and the bottom of the connecting cylinder and keeping communication; and a pushing mechanism arranged on the fixed plate for pushing the polishing oil in the connecting cylinder to the spray pipe.

[0008] As a further preferred scheme, the pushing mechanism comprises a connecting plate connected to the top of the fixed plate; a connecting rod connected to the bottom of the connecting plate; and a piston plate connected to the lower end of the connecting rod, and the piston plate is located in the inside of the connecting cylinder.

[0009] As a further preferred scheme, it further comprises rotating plates symmetrically and intervally rotatably connected to the two sides of the lifting frame, and a sliding groove is formed on the rotating plate; a rubber roller is rotatably connected to the rotating plate; a circular plate is connected to the side surface of the sliding block; a horizontal plate is connected to the side surface of the circular plate; and short rods are symmetrically connected to the side surface of the horizontal plate, and the short rods are located in the sliding groove.

[0010] As a further preferred scheme, it further comprises a fixed block connected to the side surface of the rotating plate; a sliding rod slidably connected to the fixed block; a first scraper connected to the end of the sliding rod, and the first scraper is in contact with the rubber roller; and a connecting spring having two ends respectively connected to the fixed block and the sliding rod.

[0011] As a further preferred scheme, it further comprises a second scraper circumferentially and intervally connected to the outer side of the conveying belt of the conveyor, and the second scraper is in contact and cooperation with the top of the supporting plate; and a collecting frame connected to the side surface of the supporting plate.

[0012] As a further preferred scheme, it further comprises a discharging inclined plate connected to the rack.

[0013] The present application has the following advantages: 1. The present application sets a plurality of sandpapers with increasing mesh numbers and a matching electric roller, cooperates with a conveyor and a supporting wheel to realize automatic transfer and positioning of a workpiece between rough grinding, medium grinding and fine grinding processes, meanwhile, the relative displacement between the piston plate and the connecting cylinder in the liquid storage tank, the connecting cylinder and the spray pipe in the feeding assembly during the movement of the lifting frame automatically sprays the polishing oil uniformly to the surface of the sandpaper, without manual intervention, which can improve work efficiency, effectively improve polishing quality and avoid surface defects caused by uneven manual addition.

[0014] 2. The present invention utilizes a linkage mechanism consisting of a rotating plate, a rubber roller, and a short rod to automatically tighten the rubber roller to limit the workpiece when the sandpaper comes into contact with it, preventing the workpiece from shifting during the grinding process. At the same time, the rubber roller adheres to the workpiece surface debris during rotation, and the first scraper continuously scrapes away the impurities on the rubber roller surface under the action of the connecting spring, ensuring cleaning effect and processing stability.

[0015] 3. The present invention uses a second scraper set on the conveyor belt to cooperate with the support plate to automatically scrape the debris that falls during the grinding process into the collection frame, keeping the working area clean. At the same time, the discharge inclined plate is connected to the conveyor to realize the automatic sliding out of the polished workpiece, forming a continuous operation process, which significantly improves the efficiency of batch processing and reduces the intensity of manual operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram showing the installation of the slider, electric roller, and sandpaper of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the support component and the second scraper of the present invention.

[0019] Figure 4 This is a schematic diagram of the installation of the feeding component of the present invention.

[0020] Figure 5 This is a schematic diagram of the installation of the piston plate of the present invention.

[0021] Figure 6 This is a schematic diagram showing the installation of the rotating plate, rubber roller, circular plate, and horizontal plate of the present invention.

[0022] Figure 7 This is a schematic diagram showing the installation of the short rod, fixing block, sliding rod, first scraper, and connecting spring of the present invention.

[0023] Figure 8 This is a schematic diagram of the installation of the collection frame and the discharge ramp of the present invention.

[0024] Wherein: 1-Frame, 101-Mounting slot, 2-Controller, 3-Conveyor, 4-Fixing plate, 5-Lifting frame, 6-Electric push rod, 7-Slider, 8-Electric roller, 9-Sandpaper, 10-Support plate, 11-Connecting block, 12-Support wheel, 13-Liquid storage tank, 14-Connecting cylinder, 1401-Round hole, 15-Spray pipe, 16-Connecting pipe, 17-Connecting plate, 18-Connecting rod, 19-Piston plate, 20-Rotating plate, 2001-Slide groove, 21-Rubber roller, 22-Round plate, 23-Horizontal plate, 24-Short rod, 25-Fixing block, 26-Slide rod, 27-First scraper, 28-Connecting spring, 29-Second scraper, 30-Collection frame, 31-Discharge inclined plate. Detailed Implementation

[0025] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: A grinding and polishing device for mechanical parts, such as Figures 1-5 As shown, the assembly includes a frame 1, a controller 2, a conveyor 3, a fixed plate 4, a lifting frame 5, an electric push rod 6, a slider 7, an electric roller 8, sandpaper 9, a support assembly, and a feeding assembly. The frame 1 has an installation slot 101. The controller 2 is installed on the upper left side of the front of the frame 1. The conveyor 3 is installed in the installation slot 101, and the conveyor 3 has a total of six conveyor belts. Fixed plates 4 are symmetrically connected to the front and rear sides of the top of the frame 1. The lifting frame 5 is slidably connected between the four fixed plates 4. Electric push rods 6 are installed on each of the four fixed plates 4, and the telescopic rods of the electric push rods 6 are connected to the lifting frame 5. Three sliders 7 are slidably connected at intervals on the front and rear sides of the lower part of the lifting frame 5. An electric roller 8 is installed between two corresponding front and rear sliders 7. Sandpaper 9 is connected to the electric roller 8, and the grit of the three sandpapers 9 increases sequentially from left to right. The frame 1 has a support assembly for stabilizing the workpiece, and the lifting frame 5 has a feeding assembly for adding polishing oil to the sandpaper 9.

[0027] like Figure 1 and Figure 3 As shown, the support assembly includes a support plate 10, connecting blocks 11, and support wheels 12. The inner wall of the mounting groove 101 is connected to the support plate 10. The support plate 10 is located directly below the three electric rollers 8, and the conveyor belt of the conveyor 3 slides through the upper part of the support plate 10. Each conveyor belt of the conveyor 3 is circumferentially connected to multiple connecting blocks 11, and each connecting block 11 is rotatably connected to a support wheel 12. The six support wheels 12 corresponding to each other at the front and back form a group.

[0028] like Figure 4 and Figure 5As shown, the feeding assembly includes a liquid storage tank 13, a connecting cylinder 14, a spray pipe 15, a connecting pipe 16, and a pushing mechanism. The top of the lifting frame 5 is symmetrically connected to the liquid storage tanks 13. The interiors of both liquid storage tanks 13 are symmetrically connected to the connecting cylinders 14. The top of each connecting cylinder 14 is open and maintains communication with the interior of the liquid storage tank 13. Each connecting cylinder 14 has circumferentially spaced circular holes 1401 on its upper part. The upper part of the lifting frame 5 is symmetrically connected to the spray pipes 15. The two spray pipes 15 are located on the right side of the two electric rollers 8. Above, a connecting pipe 16 is connected between the bottom of the connecting cylinder 14 and the nozzle 15 and keeps them in communication. The fixing plate 4 is provided with a pushing mechanism for pushing the polishing oil in the connecting cylinder 14 to the nozzle 15. The pushing mechanism includes a connecting plate 17, a connecting rod 18 and a piston plate 19. The top of each of the four fixing plates 4 is connected to a connecting plate 17, the bottom of the connecting plate 17 is connected to a connecting rod 18, and the lower end of the connecting rod 18 is connected to a piston plate 19. The piston plate 19 corresponds to the connecting cylinder 14 one by one and is located inside the connecting cylinder 14.

[0029] Initially, each storage tank 13 contains an appropriate amount of polishing oil. When the device is needed, the controller 2 first controls the conveyor 3 and electric roller 8 to start working. The electric roller 8 drives the sandpaper 9 to rotate, and the conveyor 3 drives the connecting block 11 and support wheel 12 to rotate intermittently. Then, cylindrical workpieces are placed one by one between two adjacent sets of support wheels 12. The support wheels 12 can intermittently transport the cylindrical workpieces to the right. When the cylindrical workpiece moves to directly below the leftmost electric roller 8, the cylindrical workpiece will stop moving. Then, the controller 2 controls the electric push rod 6 to drive the lifting frame 5 to move downward. The lifting frame 5 drives the slider 7, electric roller 8, sandpaper 9, and storage tank 13. 3. The connecting cylinder 14 moves downward, causing it to move downward relative to the piston plate 19. When the height of the circular hole 1401 on the connecting cylinder 14 is lower than the bottom height of the piston plate 19, the polishing oil in the reservoir 13 will enter the connecting cylinder 14 through the circular hole 1401. Then, the leftmost sandpaper 9 will come into contact with the cylindrical workpiece. At this time, the leftmost sandpaper 9, through the friction between itself and the cylindrical workpiece, can drive the cylindrical workpiece to rotate. The cylindrical workpiece, through the friction between itself and the support wheel 12, can drive the support wheel 12 to rotate. At the same time, the leftmost sandpaper 9 can fully polish the surface of the cylindrical workpiece. After polishing is completed, the controller 2 will control the electric push rod. The lifting frame 5 moves upward and resets, driving the slider 7, electric roller 8, sandpaper 9, liquid tank 13, and connecting cylinder 14 to move upward and reset. The leftmost sandpaper 9 will detach from the cylindrical workpiece, and the connecting cylinder 14 will move upward relative to the piston plate 19. At this time, the piston plate 19 will squeeze the polishing oil in the connecting cylinder 14, causing the polishing oil to flow through the connecting pipe 16 to the spray pipe 15. The spray pipe 15 can evenly spray the polishing oil onto the surfaces of the two sandpapers 9 on the right, completing the automatic polishing oil spraying work. Then, the controller 2 will control the conveyor 3 to transport the polished cylindrical workpiece to the right to directly below the middle electric roller 8. At the same time, the conveyor 3 can transport the next... The cylindrical workpiece is conveyed to the leftmost electric roller 8. Then, the controller 2 controls the electric push rod 6 to drive the lifting frame 5 to move downward again. The lifting frame 5 drives the slider 7, electric roller 8 and sandpaper 9 to move downward, so that the middle sandpaper 9 contacts the cylindrical workpiece, thereby polishing the cylindrical workpiece after grinding. At the same time, the leftmost sandpaper 9 can grind the next cylindrical workpiece. Then, the above operation is repeated so that the right sandpaper 9 contacts the cylindrical workpiece after the first polishing to polish the cylindrical workpiece again. When the right sandpaper 9 separates from the polished cylindrical workpiece, the conveyor 3 can convey the polished cylindrical workpiece to the right for discharge.

[0030] like Figure 6 and Figure 7As shown, it also includes a rotating plate 20, a rubber roller 21, a circular plate 22, a horizontal plate 23, and a short rod 24. The lower parts of the front and rear sides of the lifting frame 5 are rotatably connected to three sets of rotating plates 20 at intervals. Each set of rotating plates 20 consists of two plates, and the two rotating plates 20 in the same set are arranged in an X-shape. Each rotating plate 20 has a groove 2001 on its upper part. The lower parts of the two corresponding rotating plates 20 are rotatably connected to a rubber roller 21. The opposite sides of the sliders 7 on the front and rear sides are connected to a circular plate 22. The opposite sides of the circular plates 22 on the front and rear sides are connected to a horizontal plate 23. The left and right sides of each horizontal plate 23 are connected to a short rod 24. The short rod 24 corresponds one-to-one with the groove 2001, and the short rod 24 is located in the groove 2001 corresponding to it.

[0031] When the lifting frame 5 moves the slider 7, electric roller 8, and sandpaper 9 downwards, the lifting frame 5 simultaneously moves the rotating plate 20 and rubber roller 21 downwards. Meanwhile, the slider 7 moves the circular plate 22, horizontal plate 23, and short rod 24 downwards synchronously. When the sandpaper 9 contacts the cylindrical workpiece, the slider 7, electric roller 8, sandpaper 9, circular plate 22, horizontal plate 23, and short rod 24 are all obstructed and stop moving downwards. The lifting frame 5 then moves the rotating plate 20 and rubber roller 21 downwards. At this time, the short rod 24 presses against the slide groove 2001, causing it to rotate away from the center of the circular plate 22, thus driving the rotating plate... The upper end of the rotating plate 20 rotates away from the center of the circular plate 22. At this time, the lower end of the rotating plate 20 rotates towards the center of the circular plate 22, driving the rubber roller 21 to rotate towards the center of the circular plate 22. This allows the two rubber rollers 21 to cooperate in limiting the cylindrical workpiece. During the grinding and polishing process of the cylindrical workpiece, it can prevent the cylindrical workpiece from shifting. At the same time, the rubber roller 21 will rotate due to the friction between it and the cylindrical workpiece, so it will not affect the rotation of the cylindrical workpiece. In addition, the rubber roller 21 can remove the debris remaining on the surface of the cylindrical workpiece.

[0032] like Figure 7 As shown, it also includes a fixing block 25, a sliding rod 26, a first scraper 27, and a connecting spring 28. The lower part of each rotating plate 20 is connected to a fixing block 25, and a sliding rod 26 is slidably connected to each fixing block 25. The lower ends of two corresponding sliding rods 26 are connected to a first scraper 27. The first scraper 27 corresponds to the rubber roller 21 one by one, and the first scraper 27 contacts the rubber roller 21. A connecting spring 28 is wrapped around the outside of each sliding rod 26. The two ends of the connecting spring 28 are respectively connected to the fixing block 25 and the sliding rod 26.

[0033] Under the elastic force of the connecting spring 28, the first scraper 27 will always be in contact with the surface of the rubber roller 21. During the rotation of the rubber roller 21, the first scraper 27 can scrape off the debris adhering to the surface of the rubber roller 21, ensuring that the rubber roller 21 can continuously remove the debris remaining on the surface of the cylindrical workpiece.

[0034] like Figure 3 and Figure 8 As shown, it also includes a second scraper 29 and a collection frame 30. Four second scrapers 29 are circumferentially connected to the outer side of the conveyor belt of the conveyor 3. When the second scraper 29 rotates with the conveyor belt of the conveyor 3 to the top of the support plate 10, the bottom of the second scraper 29 will contact the top of the support plate 10, thereby scraping the debris remaining on the top of the support plate 10 to the right. A collection frame 30 is connected to the right side of the support plate 10 for collecting debris.

[0035] like Figure 8 As shown, it also includes a discharge ramp 31. The right side of the frame 1 is connected to the discharge ramp 31. The discharge ramp 31 is located on the right side of the conveyor 3. The conveyor 3 can transport the polished workpiece to the right onto the discharge ramp 31 so that the workpiece rolls to the right along the top of the discharge ramp 31 for discharge.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A grinding and polishing device for mechanical parts, comprising: a frame (1), wherein a mounting groove (101) is formed on the frame (1); characterized in that, It also includes: a controller (2), installed on the side of the frame (1); a conveyor (3), installed in the mounting groove (101); a fixed plate (4), symmetrically connected to the top of the frame (1); a lifting frame (5), slidably connected to the fixed plate (4); an electric push rod (6), installed on the side of the fixed plate (4), and the telescopic rod of the electric push rod (6) is connected to the lifting frame (5); a slider (7), symmetrically and slidably connected to the lifting frame (5); an electric roller (8), installed on the slider (7); sandpaper (9), connected to the electric roller (8); a support assembly, set on the frame (1), used to provide stable support for the workpiece; and a feeding assembly, set on the lifting frame (5), used to add polishing oil to the sandpaper (9).

2. The mechanical parts grinding and polishing device according to claim 1, characterized in that, The support assembly includes: a support plate (10) connected to the inner wall of the mounting groove (101), and the conveyor belt of the conveyor (3) slides through the upper part of the support plate (10); a connecting block (11) circumferentially connected to the outer side of the conveyor belt of the conveyor (3); and a support wheel (12) rotatably connected to the connecting block (11).

3. The mechanical parts grinding and polishing device according to claim 1, characterized in that, The feeding assembly includes: a liquid storage tank (13), symmetrically connected to the top of the lifting frame (5); a connecting cylinder (14), symmetrically connected inside the liquid storage tank (13), and the connecting cylinder (14) has circumferentially spaced round holes (1401); a spray pipe (15), symmetrically installed on the lifting frame (5); a connecting pipe (16), with both ends connected to the bottom of the spray pipe (15) and the connecting cylinder (14) respectively and kept in communication; and a pushing mechanism, set on the fixed plate (4), used to push the polishing oil in the connecting cylinder (14) to the spray pipe (15).

4. The mechanical parts grinding and polishing device according to claim 3, characterized in that, The pushing mechanism includes: a connecting plate (17) connected to the top of the fixed plate (4); a connecting rod (18) connected to the bottom of the connecting plate (17); and a piston plate (19) connected to the lower end of the connecting rod (18), with the piston plate (19) located inside the connecting cylinder (14).

5. The mechanical parts grinding and polishing device according to claim 1, characterized in that, It also includes: a rotating plate (20), which is symmetrically and rotatably connected to both sides of the lifting frame (5), and the rotating plate (20) has a groove (2001); a rubber roller (21), which is rotatably connected to the rotating plate (20); a circular plate (22), which is connected to the side of the slider (7); a horizontal plate (23), which is connected to the side of the circular plate (22); and a short rod (24), which is symmetrically connected to the side of the horizontal plate (23), and the short rod (24) is located in the groove (2001).

6. The mechanical parts grinding and polishing device according to claim 5, characterized in that, It also includes: a fixed block (25) connected to the side of the rotating plate (20); a slide rod (26) slidably connected to the fixed block (25); a first scraper (27) connected to the end of the slide rod (26) and in contact with the rubber roller (21); and a connecting spring (28) connected at both ends to the fixed block (25) and the slide rod (26).

7. The mechanical parts grinding and polishing device according to claim 2, characterized in that, It also includes: a second scraper (29), which is circumferentially spaced on the outside of the conveyor belt of the conveyor (3), and the second scraper (29) is in contact with the top of the support plate (10); and a collection frame (30), which is connected to the side of the support plate (10).

8. The mechanical parts grinding and polishing device according to claim 1, characterized in that, It also includes: a discharge ramp (31), which is connected to the frame (1).

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