Numerical control sanding device

Abstract

The invention relates to the technical field of sanding equipment, in particular to a numerical control sanding device which comprises a base, a mounting table is arranged at the top end of the base, a driving motor and a sanding tank are arranged on the mounting table, a stirring shaft is arranged in the sanding tank, and one end of the stirring shaft penetrates through the side wall of the sanding tank and extends out of the outer side of the sanding tank. According to the device, the threaded rod is controlled to rotate, so that the two sleeving plates get close to each other or get away from each other, in the process that the two sleeving plates get close to each other, the two second partition plates can be attached to the surface of the dynamic separator, and in the process that the two sleeving plates get away from each other, the two second partition plates can be attached to the surface of the dynamic separator. When the sand milling tank needs to be detached, the triangular inserting plate moves downwards and is attached to the top ends of the partition plates, the triangular inserting plate can separate the two partition plates from the surface of the dynamic separator under pushing of the reset spring, and the situation that the partition plates can be detached from the dynamic separator only when the sand milling tank needs to be detached is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sand grinding equipment, in particular to a numerically controlled sand grinding device. Background Art

[0002] CNC sand mills can be subdivided into horizontal sand mills, basket sand mills, vertical sand mills, etc. They are widely used in the wet ultrafine grinding process of coatings, dyes, medicines, magnetic powders and other products. Among them, the horizontal sand mill has higher working efficiency and lower production cost during the operation process.

[0003] During the working process of some existing CNC sand mills (such as horizontal sand mills), materials are placed in the CNC sand mill and mixed with grinding media for stirring and grinding. The ground and dispersed materials are then separated by a dynamic separator in the CNC sand mill. In order to prevent excessive materials and grinding media from clogging the periphery of the dynamic separator, a partition screen and a scraper are installed on the surface of the dynamic separator. The scraper moves on the outer wall of the partition screen to scrape off excess materials or grinding media. During long-term use, the CNC sand mill needs to be disassembled to repair and replace the partition screen and scraper. Since the overall structure of the CNC sand mill is relatively fixed, it is not convenient to quickly disassemble the CNC sand mill to repair and replace the partition screen and scraper, which needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a numerically controlled sanding device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC sanding device, comprising a base, a mounting platform is arranged on the top of the base, a driving motor and a sanding tank are arranged on the mounting platform, a stirring shaft is arranged in the sanding tank, and one end of the stirring shaft passes through the side wall of the sanding tank and extends out of the sanding tank, a synchronous belt is jointly provided between the stirring shaft and the driving motor, a plurality of sanding discs are arranged on the outer wall of the stirring shaft located in the sanding tank, a feeding pipe is arranged on the sanding tank, a dynamic separator is arranged on the stirring shaft, two partitions are attached to the dynamic separator, an air pump is arranged on the dynamic separator, a discharge pipe is arranged on the air pump, and a maintenance component is arranged on the top of the sanding tank.

[0006] Three installation openings are arranged on the outer wall of the sand grinding tank, and sliding cover plates and installation frames are arranged in the installation openings.

[0007] The maintenance component includes a fixed frame and a U-shaped block. A rotating motor is arranged on the fixed frame. A threaded rod is connected to the rotating motor. Two set plates are set on the outer wall of the threaded rod. Insertion rods and cross bars are arranged on the two set plates. Triangular blocks are arranged on the two cross bars. Arc plates are arranged on the insertion rods. Second partitions are movably installed on the arc plates. Several reset springs are arranged on the U-shaped block. The bottom ends of the several reset springs are commonly connected to a separation component.

[0008] The arc-shaped plates are each provided with two grooves, and a rotating shaft is provided in each groove. A toggle plate is provided on one of the rotating shafts, and a fitting plate and a linkage plate are provided on the outer wall of the other rotating shaft.

[0009] The arc plate is provided with a hidden groove, a telescopic connecting rod is provided in the hidden groove, and an arc-shaped fitting plate is provided on the telescopic connecting rod.

[0010] The separation component comprises a lifting plate, on which two protrusions are arranged, on which both protrusions are arranged a toggle block and a threaded through hole, and in which the threaded through holes on the protrusions are arranged a limiting screw.

[0011] A groove is provided at the bottom end of the lifting plate, and a fixing rod is provided in the groove. A triangular plug plate is provided at the bottom end of the fixing rod. Two L-shaped connecting plates are also provided on the outer wall of the fixing rod. A sleeve plate is provided between the two L-shaped connecting plates, and a roller is provided on the sleeve plate.

[0012] A lifting rod is arranged on the installation frame at the bottom end of the sand grinding tank, a disc is arranged at the bottom end of the lifting rod, a plurality of lifting springs are arranged between the disc and the installation frame, a fixed platform is arranged on the top end of the lifting rod, four movable grooves and two rotating rods are arranged on the fixed platform, translation rods are arranged in the movable grooves, and arc-shaped support plates and pry plates are arranged on the outer walls of the rotating rods.

[0013] The movable grooves are all provided with translational slide grooves, and the diameter of the translational slide grooves is the same as the diameter of the translational rods. The translational slide grooves are provided with springs, and the two ends of the springs are respectively fixedly connected to the inner wall of the translational slide grooves and the outer wall of the translational rods.

[0014] A circular ring is fixedly mounted on each of the translation rods, and the inner diameter of the circular ring is the same as the diameter of the rotating rod, and the inner wall of the circular ring and the outer wall of the rotating rod are connected via a volute spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention controls the rotation of the threaded rod to make the two set plates approach each other or move away from each other. When the two set plates approach each other, the two second partitions can be attached to the surface of the dynamic separator. When the two set plates move away from each other, the triangular plug plate will move downward and fit to the top of the partition. The triangular plug plate is pushed by the reset spring to separate the two partitions from the surface of the dynamic separator, thereby avoiding the need to disassemble the sanding tank before the partition can be removed from the dynamic separator.

[0017] After the two partitions are pried open by the prying plate, the prying plate will drive the rotating rod to rotate, and the rotating rod can simultaneously drive the arc-shaped supporting plate to rotate upward to lift the partition, so as to prevent the removed partition from being displaced and moving during the falling process and unable to enter the installation frame at the bottom of the sand mill tank.

[0018] When the insertion rod follows the translational movement of the set plate, the arc plate will be driven into the sanding tank. When the two arc plates are close to each other, the toggle plate on one arc plate will contact the fitting plate on the other arc plate, and drive the fitting plate and the rotating shaft connected to it to rotate, so that the linkage plate on the rotating shaft is disconnected from the second partition plate, and the arc fitting plate and the second partition plate are pushed to move by the telescopic connecting rod, so that the two second partition plates can be fitted and fixed on the outer wall of the dynamic separator, avoiding the need to disassemble the sanding tank for replacing the partitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the grinding jar of the present invention.

[0021] Figure 3 It is a schematic diagram of the local structure of the grinding jar of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the maintenance component of the present invention.

[0023] Figure 5 It is a schematic diagram of the partial structure of the maintenance component of the present invention.

[0024] Figure 6 It is a schematic diagram of the curved plate structure of the present invention.

[0025] Figure 7 For the present invention Figure 4 A schematic diagram of the enlarged structure in FIG.

[0026] Figure 8 It is a schematic diagram of the separation component structure of the present invention.

[0027] Fig. 9 It is a schematic diagram of the lifting rod structure of the present invention.

[0028] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at point B in FIG.

[0029] Fig.11 It is a schematic diagram of the partition structure of the present invention.

[0030] In the figure: 1, base; 2, mounting table; 3, drive motor; 4, sanding tank; 5, stirring shaft; 6, sanding disc; 7, synchronous belt; 8, feed pipe; 9, vacuum pump; 10, discharge pipe; 11, dynamic separator; 12, partition; 13, mounting frame; 14, plug-in rod; 15, mounting port; 16, sliding cover; 17, maintenance assembly; 18, fixed frame; 19, rotating motor; 20, threaded rod; 21, set plate; 22, cross bar; 23, triangular block; 24, arc plate; 25, rotating shaft; 26, toggle plate; 27, fitting Plate; 28, linkage plate; 29, second partition; 30, telescopic connecting rod; 31, arc-shaped fitting plate; 32, U-shaped block; 33, separation assembly; 34, reset spring; 35, lifting plate; 36, bump; 37, toggle block; 38, limit screw; 39, fixing rod; 40, triangular plug plate; 41, L-shaped connecting plate; 42, sleeve plate; 43, roller; 44, lifting rod; 45, disc; 46, lifting spring; 47, fixing table; 48, moving groove; 49, rotating rod; 50, translation rod; 51, arc-shaped support plate; 52, pry plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 11 The present invention provides a technical solution: a CNC sanding device, comprising a base 1, such as Figure 1 , Figure 2 , Figure 3 , Fig.11As shown in the figure, a mounting platform 2 is fixedly installed on the top of the base 1, a groove is provided on the front end surface of the mounting platform 2, and a driving motor 3 is installed in the groove, and a sanding jar 4 is provided in front of the mounting platform 2, an opening is provided on the top of the sanding jar 4, and a feeding pipe 8 is installed in the opening, and a support plate is provided at the bottom end of the sanding jar 4, and the bottom end of the support plate is fixedly connected to the base 1, so as to provide support for the sanding jar 4, and a stirring shaft 5 is provided in the sanding jar 4, and a circular insertion hole is provided on the front end surface of the mounting platform 2, and the rear side wall of the stirring shaft 5 passes through the rear side wall of the sanding jar 4 and is inserted into the circular insertion hole on the mounting platform 2, and the stirring shaft 5 is located outside the sanding jar 4. A synchronous belt 7 is provided between the driving motor 3 and the stirring shaft 5. The driving motor 3 can drive the stirring shaft 5 to rotate through the synchronous belt 7 during operation. A plurality of sanding discs 6 are fixedly installed on the outer wall of the stirring shaft 5 located in the sanding tank 4. A dynamic separator 11 is fixedly installed on the front end surface of the stirring shaft 5. Two partitions 12 are movably installed on the outer wall of the dynamic separator 11. A plurality of anti-slip folds are provided on the inner walls of the partition 12 and the second partition 29. By increasing the friction between the partition 12 or the second partition 29 and the dynamic separator 11, it is convenient to drive the partition 11 to rotate in the process of the dynamic separator 11 following the rotation of the stirring shaft 5. 2 or the second partition plate 29 rotates, the front end face of the dynamic separator 11 is provided with an air pump 9, and the rear back of the air pump 9 extends into the inner cavity of the dynamic separator 11, that is, the dynamic separator 11 is movably sleeved on the outer wall of the air pump 9 to prevent the dynamic separator 11 from driving the air pump 9 to rotate during the rotation of the stirring shaft 5, and the front end face of the air pump 9 is installed with a discharge pipe 10, the discharge pipe 10 passes through the front end face side wall of the sand mill 4 and extends out of the inner cavity of the sand mill 4, and the outer wall of the sand mill 4 is provided with three mounting openings 15, the three mounting openings 15 are respectively located on the left and right side walls and the bottom side wall of the sand mill 4, and the mounting openings 15 are all slidable A sliding cover plate 16 is installed, and sliding grooves are provided on the front and rear side walls of the installation opening 15, and sliding blocks are provided in the sliding grooves, and the sliding blocks are fixedly installed on the front and rear side walls of the sliding cover plate 16 in the installation opening 15, and sealing strips are fixedly installed on the outer walls of the sliding blocks and the sliding cover plate 16, and a mounting frame 13 is fixedly installed in the installation opening 15, and a movable plate is provided on the side of the installation frame 13 away from the sanding tank 4, and the movable plate is fixed to the installation frame 13 by snapping, and it is convenient to remove the movable plate later, open the installation frame 13 and take out the material therein, and a maintenance component 17 is installed on the top of the sanding tank 4.

[0033] See also Figure 4-Figure 10The maintenance component 17 includes a fixed frame 18, which is fixedly installed on the top of the sanding tank 4, and a through hole is provided on the right side wall of the fixed frame 18, and a rotating motor 19 is installed in the through hole, and a threaded rod 20 is fixedly connected to the left side of the rotating motor 19, and the left side of the threaded rod 20 is connected to the inner wall of the fixed frame 18 through a rotating connecting ring, so that the threaded rod 20 can be driven to rotate by the rotating motor 19, and two sets of mirror-image threads are provided on the outer wall of the threaded rod 20, and two set plates 21 are movably set on the outer wall of the threaded rod 20, and the two set plates 21 are respectively movably set on the two sets of threads on the threaded rod 20, and the set plates 21 are provided with thread grooves matching the threads, so that the two sets can be driven during the rotation of the threaded rod 20. The mounting plates 21 are far away from or close to each other, and the set plates 21 are fixedly installed with cross bars 22 and plug-in rods 14, the cross bars 22 are located above the plug-in rods 14, and the side walls on which the two cross bars 22 are close to each other are fixedly connected with triangular blocks 23, and the two plug-in rods 14 are fixedly installed with arc plates 24, and the mounting frames 13 on the left and right sides of the sanding tank 4 are provided with through holes matching the diameter of the plug-in rods 14, and the plug-in rods 14 extend into the mounting frames 13 through the through holes, ensuring that the set plates 21 can only move in translation during the rotation of the threaded rods 20, and the side walls on which the two arc plates 24 are close to each other are provided with hidden grooves, and telescopic connecting rods 30 are installed in the hidden grooves, and the telescopic connecting rods 30 are composed of a positioning rod and a telescopic rod, and the positioning rods 14 are provided with a telescopic connecting rod. One side of the rod is fixedly connected to the inner wall of the hidden groove, and the other end is provided with a groove, the diameter of the groove is the same as the diameter of the telescopic rod, one end of the telescopic rod extends into the groove on the positioning rod, and a spring is provided in the groove on the positioning rod, and the two ends of the spring are respectively fixedly connected to the inner wall of the groove and the telescopic rod, and the side of the telescopic rod away from the positioning rod is fixedly connected to an arc-shaped fitting plate 31, and a second partition 29 is movably fitted on the arc-shaped fitting plate 31. After the second partition 29 is placed on the arc plate 24, the arc-shaped fitting plate 31 will enter the hidden groove on the arc plate 24 to avoid affecting the placement of the second partition 29. The second partition 29 and the partition 12 are both provided with a plurality of holes to facilitate filtering of the ground material, and the partition 12 and the second partition 29 are both provided with a plurality of insertion holes , plug-in column, by inserting the plug-in column on one partition 12 or the second partition 29 into the plug-in hole on the other partition 12 or the second partition 29, the two partitions 12 or the two second partitions 29 outside the dynamic separator 11 can be easily assembled together, and the upper and lower ends of the partition 12 or the second partition 29 are provided with triangular grooves, which are convenient for inserting the pry plate 52 and the triangular plug plate 40 into them later to separate the two partitions 12 or the two second partitions 29, and two grooves are provided on the side where the two arc plates 24 are close to each other, and the grooves are provided with a rotating shaft 25, and a toggle plate 26 is fixedly installed on the outer wall of one of the rotating shafts 25 on the single arc plate 24, and the rotating shaft 25 connected to the toggle plate 26 is fixedly connected to the arc plate 24,A linkage plate 28 and a fitting plate 27 are fixedly connected to the outer wall of the other rotating shaft 25, and the rotating shaft 25 is rotatably connected to the arc plate 24 through a torsion spring, so that after the second partition plate 29 is placed on the arc plate 24, the linkage plate 28 can be used to support the second partition plate 29 to prevent the second partition plate 29 from falling off the arc plate 24. The toggle plate 26 on the arc plate 24 on the left side of the dynamic separator 11 is located directly above the fitting plate 27 and the linkage plate 28, and the toggle plate 26 on the arc plate 24 on the right side of the dynamic separator 11 is located directly below the fitting plate 27 and the linkage plate 28, so that when the two arc plates 24 are close to each other, the toggle plate 26 on one arc plate 24 will contact the fitting plate 27 on the other arc plate 24, and during the rotation of the threaded rod 20, the two arc plates 24 can be driven into the sanding tank. 4, when the two second partitions 29 are attached to the outer wall of the dynamic separator 11, the toggle plate 26 on one arc plate 24 will contact the attaching plate 27 on the other arc plate 24, and the attaching plate 27 will drive the rotating shaft 25 and the linkage plate 28 to rotate, disconnecting the contact between the linkage plate 28 and the second partition 29, and at this time, the spring installed in the telescopic connecting rod 30 pushes the arc attaching plate 31 and the second partition 29 to move, so that the two second partitions 29 are attached together and located on the outer wall of the dynamic separator 11, and the maintenance component 17 also includes a U-shaped block 32, which is fixedly installed on the top side wall of the sanding tank 4 and located in front of the fixed frame 18, and a plurality of return springs 34 are fixedly installed on the top inner wall of the U-shaped block 32, and the bottom ends of the plurality of return springs 34 are commonly connected to the separation component 33.

[0034] See also Figure 7-Figure 8The separation assembly 33 includes a lifting plate 35, the top of which is fixedly connected to the tops of a plurality of return springs 34, and the U-shaped block 32 and the top side wall of the sand mill 4 are both provided with openings matching the length and width of the lifting plate 35, and the bottom end of the lifting plate 35 extends into the inner cavity of the sand mill 4 through the openings on the U-shaped block 32 and the top side wall of the sand mill 4 and is located directly above the partition 12, and the front and rear side walls of the lifting plate 35 are both fixedly installed with protrusions 36, and the bottom ends of the protrusions 36 are both fixedly installed with toggle blocks 37, and the bottom ends of the two toggle blocks 37 are respectively attached to the top of a triangular block 23, which is convenient for the threaded rod 20 In the process of rotating and driving the set plate 21, the cross bar 22, and the triangular block 23 to move in translation, the toggle block 37 will drive the lifting plate 35 to move up and down to adjust the height due to contacting different positions of the triangular block 23. Threaded through holes are provided on the two protrusions 36, and a limiting screw 38 is provided in the threaded through hole of the protrusion 36. The spacing between the bottom end of the limiting screw 38 and the inner wall of the bottom end of the U-shaped block 32 is adjusted by controlling the rotation of the limiting screw 38, which can facilitate the limitation of the activity space of the lifting plate 35, so as to prevent the lifting plate 35 from causing the triangular plug plate 40 to contact the partition 12 when it is not needed, and the limiting screw 38 is used to adjust the three The spacing between the bottom end of the corner plug plate 40 and the partition 12 can scrape off a part of the excessive grinding media and materials accumulated on the periphery of the partition 12, avoiding the inability to effectively remove the materials and grinding media by relying solely on the roller 43, and can prevent the triangular plug plate 40 from moving downward excessively and contacting the dynamic separator 11 when needed, causing the surface of the dynamic separator 11 to be scratched. A groove is provided at the bottom end of the lifting plate 35, and a fixing rod 39 is fixedly installed in the groove, and a triangular plug plate 40 is fixedly installed at the bottom end of the fixing rod 39, and the tip of the triangular plug plate 40 faces downward to the partition 12, and two circular sliding plates are provided on the outer wall of the fixing rod 39. Grooves, circular slide grooves are movably fitted with matching circular rings, L-shaped connecting plates 41 are fixedly installed on the outer walls of the two circular rings, a sleeve plate 42 is fixedly connected between the two L-shaped connecting plates 41, a roller 43 is provided on the left side of the sleeve plate 42, two circular ring grooves are provided on the outer wall of the roller 43, and circular grooves are movably fitted with circular rings, the circular rings on the two rollers 43 are also fixedly connected to the sleeve plate 42, and the sleeve plate 42 is located and rotated around the fixed rod 39, so that the roller 43 can fit to the outside of the partition 12 located on the outer wall of the dynamic separator 11, so that the grinding media and materials deposited on the outer periphery of the partition 12 during the rotation process can be scraped off.

[0035] See also Figure 9-10A through hole is provided on the side wall of the bottom end of the mounting frame 13 at the bottom end of the sand mill 4, and a lifting rod 44 is movably installed in the through hole, and a disc 45 is fixedly installed at the bottom end of the lifting rod 44, and the top end of the disc 45 is connected to the side wall of the bottom end of the mounting frame 13 through a plurality of lifting springs 46, and the lifting rod 44 can be pushed to move upward by contraction of the lifting springs 46, and a limiting block is installed at the bottom end of the mounting frame 13 installed at the bottom end of the sand mill 4, and the upward movement of the disc 45 is limited by the limiting block to prevent the disc 45 from moving upward excessively, causing the pry plate 52 to continue to move upward after prying open the two partitions 12 and extend into the dynamic separator 11 In the embodiment, a fixed platform 47 is fixedly installed on the top of the lifting rod 44, a groove is provided on the top of the fixed platform 47, and four moving grooves 48 and two rotating rods 49 are provided on the side wall of the groove, and a translation slide groove is provided on the inner wall of the moving groove 48, and the diameter of the translation slide groove is the same as the diameter of the translation rod 50, one side of the translation rod 50 extends into the translation slide groove, and a spring is provided in the translation slide groove, and the two ends of the spring are respectively fixedly connected to the inner wall of the translation slide groove and the translation rod 50, and a circular ring is fixedly installed on the four translation rods 50, and the inner diameter of the circular ring is the same as the diameter of the rotating rod 49, and a hidden groove is provided on the inner wall of the circular ring, and the hidden groove is provided on the inner wall of the circular ring. A spiral spring is provided in the groove, and both ends of the spiral spring are fixedly connected to the inner wall of the hidden groove and the rotating rod 49, and the rotating rod 49 is connected to the two circular rings, respectively. An arc-shaped supporting plate 51 is provided on the side of the two rotating rods 49 that are away from each other, and a prying plate 52 is provided on the side of the two rotating rods 49 that are close to each other. The sides of the two prying plates 52 that are close to each other are both pointed, which is convenient for prying the two partitions 12 apart by the two prying plates 52. After the two partitions 12 are pried apart by the two prying plates 52, the two partitions 12 are separated and fall on the top of the two prying plates 52. At this time, under the influence of the weight of the partition 12, the two prying plates 52 will drive the flat plate 12 to rotate downward. The shift rod 50 moves in translation into the translation slot, preventing the two pry plates 52 from fitting together and making it impossible for the rotating rod 49 to adjust their positions, thereby providing space for the pry plates 52 to rotate downward. When the two pry plates 52 rotate downward, the rotating rod 49 drives the two arc-shaped support plates 51 to rotate upward synchronously to fit the two partitions 12, clamping and limiting the two partitions 12, and then pulling the lifting rod 44 to move downward, so that the two partitions 12 on the pry plates 52 enter the installation frame 13 at the bottom end of the sanding tank 4, and then closing the opening on the installation frame 13 by the sliding cover plate 16, removing the movable plate on the installation frame 13, and taking out the partitions 12 therein.

[0036] When the present invention is used, the electrical appliances on the device are first started by an external power supply, and the material is fed into the sand mill 4 through the feed pipe 8 to be sand milled with the grinding medium. The sand milled material is separated from the grinding medium by the partition 12 and the dynamic separator 11, and then discharged from the discharge pipe 10 through the suction pump 9. When the partition 12 needs to be repaired or replaced, the sliding cover 16 is controlled to slide in the installation opening 15 to open the installation frame 13 to fit the opening on the side wall of the sand mill 4. At this time, the lifting spring 46 is pushed to drive the pry The plate 52 moves upward to fit the partition 12 on the outer wall of the dynamic separator 11, and then the rotary motor 19 is controlled to rotate, which drives the threaded rod 20 to rotate, so that the two set plates 21 first move to the side away from each other, so that the lifting plate 35 moves downward, so that the triangular plug plate 40 can fit the partition 12, and then the driving motor 3 is controlled to drive the stirring shaft 5 to rotate, and the stirring shaft 5 drives the dynamic separator 11 and the partition 12 to rotate slowly. During the rotation process, when the pry plate 52 and the triangular plug plate 40 contact the two partitions, After the plates 12 are fitted into the triangular grooves, the lifting spring 46 and the return spring 34 push the pry plate 52 and the triangular plug plate 40 to quickly insert into the triangular grooves of the fitting parts of the two partitions 12, separate the two partitions 12 and drop them on the top of the two pry plates 52 and are lifted by the two arc-shaped supporting plates 51, and then pull the lifting rod 44 into the installation frame 13 to bring the two removed partitions 12 into the installation frame 13. At this time, the control threaded rod 20 is reversed, and the two set plates 21 are close to each other. At this time, the insertion rod 14 will push the two second partitions 29 to fit onto the surface of the dynamic separator 11, and push the arc-shaped fitting plate 31 and the second partition 29 to move through the telescopic connecting rod 30, so that the two second partitions 29 fit onto the surface of the dynamic separator 11 and in the process of the two set plates 21 approaching each other, the cross bar 22 and the triangular block 23 will be driven to move. During the movement, the triangular block 23 will push the toggle block 37 and the triangular plug plate 40 to move upward to break the contact with the dynamic separator 11, so as to avoid affecting the installation of the second partition 29.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A numerically controlled sanding device, comprising a base (1), characterized in that: A mounting platform (2) is arranged at the top of the base (1), a driving motor (3) and a sand grinding tank (4) are arranged on the mounting platform (2), a stirring shaft (5) is arranged in the sand grinding tank (4), one end of the stirring shaft (5) penetrates the side wall of the sand grinding tank (4) and extends out of the sand grinding tank (4), a synchronous belt (7) is mounted between the stirring shaft (5) and the driving motor (3), a plurality of sand grinding discs (6) are arranged on the outer wall of the stirring shaft (5) located in the sand grinding tank (4), a feeding pipe (8) is arranged on the sand grinding tank (4), a dynamic separator (11) is arranged on the stirring shaft (5), two partitions (12) are attached to the dynamic separator (11), an air pump (9) is arranged on the dynamic separator (11), a discharge pipe (10) is arranged on the air pump (9), and a maintenance component (17) is arranged at the top of the sand grinding tank (4).

2. A CNC sanding device according to claim 1, characterized in that: Three installation openings (15) are arranged on the outer wall of the sand grinding tank (4), and sliding cover plates (16) and installation frames (13) are arranged in the installation openings (15).

3. A CNC sanding device according to claim 1, characterized in that: The maintenance assembly (17) comprises a fixed frame (18) and a U-shaped block (32). A rotating motor (19) is arranged on the fixed frame (18). A threaded rod (20) is connected to the rotating motor (19). Two set plates (21) are set on the outer wall of the threaded rod (20). The two set plates (21) are each provided with an insertion rod (14) and a cross rod (22). A triangular block (23) is each provided on the two cross rods (22). An arc plate (24) is each provided on the insertion rod (14). A second partition plate (29) is movably mounted on the arc plate (24). A plurality of return springs (34) are arranged on the U-shaped block (32). The bottom ends of the plurality of return springs (34) are commonly connected to a separation assembly (33).

4. A numerically controlled sanding device according to claim 3, characterized in that: The arc-shaped plates (24) are each provided with two grooves, and a rotating shaft (25) is provided in each groove. A shifting plate (26) is provided on one of the rotating shafts (25), and a fitting plate (27) and a linkage plate (28) are provided on the outer wall of the other rotating shaft (25).

5. A numerically controlled sand grinding device according to claim 3, characterized in that: The arc-shaped plate (24) is provided with a hidden groove, a telescopic connecting rod (30) is provided in the hidden groove, and an arc-shaped fitting plate (31) is provided on the telescopic connecting rod (30).

6. A numerically controlled sand grinding device according to claim 3, characterized in that: The separation assembly (33) comprises a lifting plate (35), the lifting plate (35) being provided with two protrusions (36), both of the two protrusions (36) being provided with a toggle block (37) and a threaded through hole, and both of the threaded through holes on the protrusions (36) being provided with a limiting screw (38).

7. A numerically controlled sand grinding device according to claim 6, characterized in that: The bottom end of the lifting plate (35) is provided with a groove, and a fixing rod (39) is arranged in the groove. The bottom end of the fixing rod (39) is provided with a triangular plug plate (40). Two L-shaped connecting plates (41) are also arranged on the outer wall of the fixing rod (39). A sleeve plate (42) is arranged between the two L-shaped connecting plates (41), and a roller (43) is arranged on the sleeve plate (42).

8. A numerically controlled sand grinding device according to claim 2, characterized in that: A lifting rod (44) is arranged on the mounting frame (13) at the bottom end of the sanding tank (4), a disc (45) is arranged at the bottom end of the lifting rod (44), a plurality of lifting springs (46) are arranged between the disc (45) and the mounting frame (13), a fixed platform (47) is arranged at the top end of the lifting rod (44), four movable grooves (48) and two rotating rods (49) are arranged on the fixed platform (47), a translation rod (50) is arranged in each of the movable grooves (48), and an arc-shaped supporting plate (51) and a prying plate (52) are arranged on the outer wall of the rotating rod (49).

9. A numerically controlled sand grinding device according to claim 8, characterized in that: The movable groove (48) is provided with a translational slide groove, and the diameter of the translational slide groove is the same as the diameter of the translational rod (50). A spring is provided in the translational slide groove, and the two ends of the spring are respectively fixedly connected to the inner wall of the translational slide groove and the outer wall of the translational rod (50).

10. A numerically controlled sand grinding device according to claim 8, characterized in that: A circular ring is fixedly mounted on each of the translation rods (50), and the inner diameter of the circular ring is the same as the diameter of the rotating rod (49), and the inner wall of the circular ring and the outer wall of the rotating rod (49) are connected via a spiral spring.

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