CN114406858B

CN114406858B - 3D prints grinding machine for product

Info

Publication number: CN114406858B
Application number: CN202210089184.8A
Authority: CN
Inventors: 谢大权; 唐飞; 王勋
Original assignee: Nanjing Chenglian Laser Technology Co Ltd
Current assignee: Nanjing Chenglian Laser Technology Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-11-25
Anticipated expiration: 2042-01-25
Also published as: CN114406858A

Abstract

The invention provides a grinding machine for a 3D printed product, which belongs to the technical field of 3D printing and comprises a working frame, wherein the top of the right side of the working frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a threaded rod, the outer side of the threaded rod is in threaded connection with two symmetrically distributed moving blocks, and the bottoms of the two moving blocks are fixedly connected with a moving plate. The invention solves the problems that the polishing efficiency of the product is lower, and the labor intensity of workers who manually polish the product printed by 3D by using a polisher is high and the safety is low, and the hands are easy to hurt, and the invention eliminates the tortuosity generated when the polishing paper is driven by a rubber pressing block to be attached to the surface of the product, so that the polishing paper is completely attached to the product, can polish cylindrical bodies with smooth surfaces, can also polish cylindrical bodies with curvature surfaces, can be used more flexibly, does not need manual polishing, and can improve the safety of the workers.

Description

3D prints grinding machine for product

The technical field is as follows:

the invention belongs to the technical field of 3D printing, and particularly relates to a grinding machine for a 3D printed product.

Background art:

3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using an adhesive material such as powdered metal or plastic and the like in a layer-by-layer printing manner on the basis of a digital model file.

Many 3D print the product of making all relatively more crude, consequently need polish to the product that 3D printed, generally adopt the manual work to polish the product at present, so the efficiency of polishing of product is lower, and the manual work uses the polisher to polish workman's intensity of labour big to the product that 3D printed out to easily hurt the hand, the security is low, provides a 3D from this and prints grinding machine for the product.

The invention content is as follows:

the invention provides a grinding machine for 3D printed products, and aims to solve the problems that the grinding efficiency of the products is low when the products are ground by manpower, the labor intensity of workers who grind the products printed by 3D by using a grinding machine by manpower is high, and the safety of damaging hands is low.

The invention provides a grinding machine for a 3D printed product, which comprises a working frame, wherein the top of the right side of the working frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a threaded rod, the outer side of the threaded rod is in threaded connection with two symmetrically-distributed moving blocks, the bottoms of the two moving blocks are both fixedly connected with a moving plate, a clamping rotating assembly is arranged between the two moving plates, the inner side of the working frame is fixedly connected with a bearing bracket, the middle of the bearing bracket is fixedly connected with a scrap box, the top of the scrap box is fixedly connected with a fan, the air inlet end of the fan is fixedly connected with a four-way pipe head, the pipe opening at the top of the four-way pipe head is in threaded connection with a first scrap suction cover, the inner top wall of the working frame is fixedly connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is provided with a grinding assembly, and the bottom of the grinding assembly is provided with second scrap suction covers which are symmetrically distributed front and back;

the polishing component comprises a cover body, an air box, a supporting rod, an auxiliary roller, a third motor, a winding roller, a fixing block, an emitting roller, a groove, a disk spring, polishing paper, a bottom block, a sliding cavity, a piston block, a push rod, a rubber pressing block and an air pump, the cover body is fixedly connected with the telescopic end of the electric telescopic rod, the air box is fixedly connected with the inner top wall of the cover body, the number of the supporting rods is four, the four supporting rods are divided into two groups, the two groups of supporting rods are symmetrically distributed on the left side and the right side of the air box and are fixedly connected with the air box, the two auxiliary rollers are respectively connected with the corresponding group of supporting rods in a rotating way, the third motor is fixedly connected with the right side of the air box, the wind-up roll is fixedly connected with the output end of the third motor, the two fixing blocks and the two disk springs are arranged and fixedly connected with the left side of the air box, the two grooves are respectively arranged on the corresponding fixed blocks, the two ends of the discharging roller extend into the grooves and are rotationally connected with the fixed blocks, the two disc springs are respectively sleeved at the two ends of the discharging roller and are positioned in the grooves, one end of the polishing paper is wound on the outer side of the pay-off roller, the other end of the polishing paper is wound on the outer side of the wind-up roller, the bottom block is fixedly connected with the inner bottom wall of the air box, a plurality of sliding cavities, the piston block, the ejector rod and the rubber pressing block are arranged, the plurality of sliding cavities are uniformly arranged in the bottom block, the plurality of piston blocks are positioned in the corresponding sliding cavities, the plurality of ejector rods are fixedly connected with the bottoms of the corresponding piston blocks, the plurality of rubber pressing blocks are fixedly connected with the bottoms of the corresponding ejector rods, and the air pump is fixedly connected with the inner wall of the right side of the working frame.

Through adopting above-mentioned technical scheme, utilize the subassembly of polishing to polish the product that 3D printed to can laminate the surface of product, can polish the cylinder that the surfacing is smooth, also can polish the cylinder that the surface has the curvature, use that can be comparatively nimble.

Further, centre gripping runner assembly includes dwang, first gear, grip disc, second motor, head rod, second connecting rod and second gear, dwang, first gear, grip disc and second gear all are provided with two, two the dwang rotates with the movable plate that corresponds respectively to be connected, two the outside at the dwang that corresponds, two are cup jointed respectively to the first gear the grip disc respectively with the tip fixed connection of the dwang that corresponds, the second motor with be located left the outside fixed connection of movable plate, the output fixed connection of head rod and second motor, second connecting rod and head rod sliding connection are located the outside at the head rod of left second gear cup joint, are located the right side the outside at the second connecting rod of second gear cup joint.

Through adopting above-mentioned technical scheme, utilize centre gripping runner assembly to carry out the centre gripping to the product of printing to both ends rotate simultaneously and prevent to appear rotating asynchronous 3D printing product dislocation that leads to, the influence is polished.

Furthermore, the threaded rod is rotatably connected with the working frame, a limiting groove matched with the moving block is formed in the inner top wall of the working frame, threads are arranged on the outer side of the threaded rod, the number of the threads is two, the directions of the threads are opposite, and the front pipe orifice and the rear pipe orifice of the four-way pipe head are respectively communicated with the corresponding second scrap suction covers through two second hoses.

Through adopting above-mentioned technical scheme, utilize the threaded rod to rotate the removal that drives the movable block and then make two movable plates keep away from each other or be close to each other, polish the product to utilize the fan to produce the piece that suction will polish the production and absorb through the second hose.

Furthermore, the first connecting rod is rotatably connected with the moving plate, the second connecting rod is rotatably connected with the moving plate on the right side, the second gear is in transmission connection with the first gear through a chain, and the first connecting rod, the second connecting rod and the clamping disc are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, utilize head rod and the synchronous rotation of second connecting rod and then make two clamping disks synchronous rotations, and then make the product rotate, the phenomenon that the asynchronous influence product was polished of rotation can not appear.

Furthermore, a sliding groove is formed in the inner side of the first connecting rod and matched with the second connecting rod, a limiting sliding block is fixedly connected to the outer side of the second connecting rod, and a sliding groove matched with the sliding block is formed in the inner side of the first connecting rod.

Through adopting above-mentioned technical scheme, utilize spacing slider can make head rod and second connecting rod synchronous revolution.

Furthermore, the air outlet end of the air pump is communicated with the inner side of the air box through a first hose, the piston block is connected with the bottom block in a sliding mode, and the top of the air box is fixedly connected with an air outlet valve.

Through adopting above-mentioned technical scheme, utilize the air pump to aerify to the gas tank through first hose and can make the piston piece remove and drive the rubber briquetting and then make the paper laminating of polishing at the surface of product.

Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:

1. according to the automatic polishing machine, the output end of the first motor drives the threaded rod to rotate so as to move the two moving blocks, the threaded rod is driven to move by the output end of the first motor, the moving blocks are driven to move by the threaded rod, the moving blocks are close to each other so as to move so as to clamp a product, the second motor drives the first connecting rod, the second connecting rod and the second gear to rotate, the clamping discs on two sides are driven to synchronously rotate through the chain, so that the product is polished, the 3D printed product is prevented from being misplaced due to asynchronous rotation and affecting polishing, and scraps can be collected through the second hose, the second scrap suction cover and the first scrap suction cover, so that the automatic polishing machine is convenient to process.

2. According to the invention, the air pump charges air into the air box through the first hose, the piston block can be moved to drive the ejector rod and the rubber press block to move along with the charging of the air, the rubber press block drives the polishing paper to downwards adhere to the surface of a product, the discharging roller rotates to discharge the polishing paper when the rubber press block drives the polishing paper, the disc spring contracts at the moment, the polishing paper can completely match with the movement of the rubber press block, and after the rubber press block drives the polishing paper to adhere to the surface of the product, the third motor can be started to drive the winding roller to rotate at the moment, the polishing paper can be tightened, the bending generated when the rubber press block drives the polishing paper to adhere to the surface of the product is eliminated, the polishing paper can completely adhere to the product, a columnar body with a smooth surface can be polished, a columnar body with a curved surface can be polished, the columnar body with a curved surface can be flexibly used, manual polishing is not needed, and the safety of workers can be improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Description of the drawings:

the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

fig. 4 is a schematic view of a connection structure of a first connecting rod and a second connecting rod according to the present invention.

Reference numerals are as follows: 1. a working frame; 2. a first motor; 3. a threaded rod; 4. a moving block; 5. moving the plate; 6. clamping the rotating assembly; 601. rotating the rod; 602. a first gear; 603. a clamping plate; 604. a second motor; 605. a first connecting rod; 606. a second connecting rod; 607. a second gear; 7. a scrap box; 8. a fan; 9. a four-way pipe head; 10. a first crumb absorbing cover; 11. an electric telescopic rod; 12. a second chip suction cover; 13. polishing the assembly; 131. a cover body; 132. a gas tank; 133. a support bar; 134. an auxiliary roller; 135. a third motor; 136. a wind-up roll; 137. a fixed block; 138. a pay-out roller; 139. a groove; 1310. a disc spring; 1311. polishing paper; 1312. a bottom block; 1313. a sliding cavity; 1314. a piston block; 1315. a top rod; 1316. pressing rubber blocks; 1317. an air pump; 14. a support bracket.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the technical solutions 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 drawings of the specific embodiments of the present invention. Like reference numerals in the drawings denote like elements. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention.

As shown in fig. 1-4, the invention provides a grinding machine for 3D printed products, which comprises a work frame 1, wherein a first motor 2 is fixedly connected to the top of the right side of the work frame 1, a threaded rod 3 is fixedly connected to the output end of the first motor 2, two symmetrically distributed moving blocks 4 are in threaded connection with the outer side of the threaded rod 3, moving plates 5 are fixedly connected to the bottoms of the two moving blocks 4, a clamping rotating assembly 6 is arranged between the two moving plates 5, a support bracket 14 is fixedly connected to the inner side of the work frame 1, a scrap box 7 is fixedly connected to the middle of the support bracket 14, a fan 8 is fixedly connected to the top of the scrap box 7, a cross pipe head 9 is fixedly connected to the air inlet end of the fan 8, a first scrap suction cover 10 is in threaded connection with the pipe orifice at the top of the cross pipe head 9, an electric telescopic rod 11 is fixedly connected to the inner top wall of the work frame 1, a grinding assembly 13 is installed at the telescopic end of the electric telescopic rod 11, and second scrap suction covers 12 are symmetrically distributed at the bottom of the grinding assembly 13;

the grinding assembly 13 comprises a cover body 131, an air box 132, support rods 133, auxiliary rollers 134, a third motor 135, a take-up roller 136, fixed blocks 137, a discharge roller 138, grooves 139, disk springs 1310, grinding paper 1311, bottom blocks 1312, sliding cavities 1313, piston blocks 1314, ejector rods 1315, rubber pressing blocks 1316 and an air pump 1317, the cover body 131 is fixedly connected with the telescopic end of the electric telescopic rod 11, the air box 132 is fixedly connected with the inner top wall of the cover body 131, four support rods 133 are arranged, four support rods 133 are divided into two groups, the two groups of support rods 133 are symmetrically distributed on the left side and the right side of the air box 132 and are fixedly connected with the air box 132, two auxiliary rollers 134 are arranged, two auxiliary rollers 134 are respectively rotatably connected with the corresponding group of support rods 133, the third motor 135 is fixedly connected with the right side of the air box 132, the output ends of the take-up roller 136 and the third motor 135 are fixedly connected, the fixed blocks 137 and the disk springs 1310 are respectively arranged on the left side of the air box 132, two grooves 139 are respectively arranged on the corresponding fixed grooves 139, two grooves 139 are respectively arranged on the discharge roller 1314, the two ends of the discharge rollers 1313, the piston blocks 1313 are arranged in the bottom grooves 1311 and are respectively connected with the bottom of the bottom blocks 1311, the bottom blocks 1315, the bottom blocks 1311, the bottom blocks 1313, the grooves 139, air pump 1317 and the right side inner wall fixed connection of work frame 1 utilize the subassembly 13 of polishing to polish the product that 3D printed to can laminate the surface of product, can polish the cylinder of surfacing, also can polish the cylinder that the surface has the curvature, use that can be comparatively nimble.

The clamping rotating assembly 6 comprises a rotating rod 601, first gears 602, clamping discs 603, a second motor 604, a first connecting rod 605, a second connecting rod 606 and a second gear 607, the rotating rod 601, the first gears 602, the clamping discs 603 and the second gears 607 are both provided with two gears, the two rotating rods 601 are respectively rotatably connected with the corresponding moving plates 5, the two first gears 602 are respectively sleeved on the outer sides of the corresponding rotating rods 601, the two clamping discs 603 are respectively fixedly connected with the end portions of the corresponding rotating rods 601, the second motor 604 is fixedly connected with the outer side of the left moving plate 5, the first connecting rod 605 is fixedly connected with the output end of the second motor 604, the second connecting rod 606 is slidably connected with the first connecting rod 605, the second gear 607 on the left side is sleeved on the outer side of the first connecting rod 605, the second gear 607 on the right side is sleeved on the outer side of the second connecting rod 606, a printed product can be clamped by the clamping rotating assembly 6, and the two ends rotate simultaneously to prevent the 3D printed product from being misplaced due to asynchronous rotation, and polishing is influenced.

Threaded rod 3 rotates with the work frame 1 to be connected, the restriction groove that matches with movable block 4 is seted up to the interior roof of work frame 1, the outside of threaded rod 3 is provided with the screw thread, the screw thread is provided with two, two threaded opposite direction, preceding of cross-tube head 9, two back mouths of pipe are inhaled bits cover 12 with the second that corresponds respectively through two second hoses and are linked together, utilize 3 removal that rotate the drive movable block 4 of threaded rod and then make two movable plates 5 keep away from each other or be close to each other, polish the product, and utilize fan 8 to produce the piece that suction will polish the production and absorb through the second hose.

The first connecting rod 605 is rotatably connected with the moving plate 5, the second connecting rod 606 is rotatably connected with the moving plate 5 on the right side, the second gear 607 is in transmission connection with the first gear 602 through a chain, the first connecting rod 605 and the second connecting rod 606 are arranged in a staggered manner with the clamping discs 603, the first connecting rod 605 and the second connecting rod 606 are synchronously rotated to further enable the two clamping discs 603 to synchronously rotate, further, a product is rotated, and the phenomenon that the product is polished due to asynchronous rotation cannot occur.

The inner side of the first connecting rod 605 is provided with a sliding groove, the sliding groove is matched with the second connecting rod 606, the outer side of the second connecting rod 606 is fixedly connected with a limiting slide block, the inner side of the first connecting rod 605 is provided with a sliding groove matched with the slide block, and the first connecting rod 605 and the second connecting rod 606 can synchronously rotate by utilizing the limiting slide block.

The air outlet end of the air pump 1317 is communicated with the inner side of the air tank 132 through a first hose, the piston block 1314 is in sliding connection with the bottom block 1312, the top of the air tank 132 is fixedly connected with an air outlet valve, and the air pump 1317 is used for inflating the air tank 132 through the first hose to enable the piston block 1314 to move to drive the rubber pressing block 1316 so as to enable the polishing paper 1311 to be attached to the surface of a product.

The implementation mode is specifically as follows: placing a product between two clamping discs 603, starting a first motor 2 at the moment, driving a threaded rod 3 to rotate by an output end of the first motor 2 so as to move two moving blocks 4, enabling the threaded rod to approach to each other to drive a moving plate 5 to move so as to drive the clamping discs 603 to move so as to clamp the product, enabling a second connecting rod 606 to retract into a first connecting rod 605 at the moment so as to clamp the product, starting an air pump 1317 at the moment, inflating the air pump 1317 into an air box 132 through a first hose, enabling a piston 1314 to move downwards along with inflation, moving the piston 1314 to drive a mandril 5 and a rubber press block 1316 to move, enabling the rubber press block 1316 to drive polishing paper 1311 to downwards adhere to the surface of the product, stopping inflating the air pump 1317 into the air box 132 at the moment after the last rubber press block 1316 drives the polishing paper 1311 to adhere to the surface of the product, and enabling an outlet roller 138 to rotate to discharge the polishing paper 1311 when the rubber press block 1316 drives the polishing paper 1311, at the moment, the disc spring 1310 is contracted to enable the polishing paper 1311 to be completely matched with the movement of the rubber pressing block 1316, after the rubber pressing block 1316 drives the polishing paper 1311 to be attached to the surface of a product, the third motor 135 can be started to drive the winding roller 136 to rotate, the polishing paper 1311 can be tightened, the bending generated when the rubber pressing block 1316 drives the polishing paper 1311 to be attached to the surface of the product is eliminated, the polishing paper 1311 is completely attached to the product, then the second motor 604 is started, the second motor 604 rotates to drive the first connecting rod 605, the second connecting rod 606 and the second gear 607 to rotate, the clamping discs 603 on two sides are driven to synchronously rotate through the chain, the product is polished, the air outlet valve is opened after polishing is finished, the discharging roller 138 rotates under the condition that the disc spring 1310 is reset, the polishing paper 1311 is wound and automatically wound, the next use is facilitated, and during polishing, the fan 8 is started, and the chips can be collected through the second hose, the second chip suction cover 12 and the first chip suction cover 10, so that the processing is convenient.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A grinding machine for 3D printed products comprises a working frame (1) and is characterized in that a first motor (2) is fixedly connected to the top of the right side of the working frame (1), a threaded rod (3) is fixedly connected to the output end of the first motor (2), two symmetrically distributed moving blocks (4) are in threaded connection with the outer side of the threaded rod (3), moving plates (5) are fixedly connected to the bottoms of the two moving blocks (4), a clamping rotating assembly (6) is arranged between the two moving plates (5), a supporting bracket (14) is fixedly connected to the inner side of the working frame (1), a scrap box (7) is fixedly connected to the middle of the supporting bracket (14), a fan (8) is fixedly connected to the top of the scrap box (7), a cross pipe head (9) is fixedly connected to the air inlet end of the fan (8), a first scrap suction cover (10) is in threaded connection with the pipe orifice at the top of the cross pipe head (9), an electric telescopic rod (11) is fixedly connected to the inner top wall of the working frame (1), a telescopic end of the electric telescopic rod (11) is provided with a telescopic assembly (13), and second scrap suction covers (12) which are symmetrically distributed at the front and back of the bottom of the grinding assembly (13);

the polishing assembly (13) comprises a cover body (131), an air box (132), supporting rods (133), an auxiliary roller (134), a third motor (135), a winding roller (136), a fixing block (137), a discharging roller (138), a groove (139), a disc spring (1310), polishing paper (1311), a bottom block (1312), a sliding cavity (1313), a piston block (1314), a push rod (1315), a rubber pressing block (1316) and an air pump (1317), wherein the cover body (131) is fixedly connected with the telescopic end of the electric telescopic rod (11), the air box (132) is fixedly connected with the inner top wall of the cover body (131), the supporting rods (133) are provided with four supporting rods (133), the four supporting rods (133) are divided into two groups, the two groups of supporting rods (133) are symmetrically distributed on the left side and the right side of the air box (132) and are fixedly connected with the air box (132), the two auxiliary rollers (134) are respectively and rotatably connected with the corresponding group of supporting rods (133), the third motor (135) is fixedly connected with the right side of the air box (132), the supporting rods (1310) are fixedly connected with the air box (136), the output end of the three fixing block (137) and the two fixing block (137) is provided with the fixing block (132), the two grooves (139) are formed, the two grooves (139) are respectively formed in corresponding fixed blocks (137), two ends of the discharging roller (138) extend into the grooves (139) and are connected with the fixed blocks (137) in a rotating mode, the two disc springs (1310) are respectively sleeved at two ends of the discharging roller (138) and are located in the grooves (139), one end of the polishing paper (1311) is wound on the outer side of the discharging roller (138), the other end of the polishing paper (1311) is wound on the outer side of the winding roller (136), the bottom block (1312) is fixedly connected with the inner bottom wall of the air box (132), the sliding cavities (1313), the piston blocks (1314), the ejector rods (1315) and the rubber pressing blocks (1316) are respectively provided with a plurality of blocks, the sliding cavities (1313) are uniformly formed in the bottom block (1316), the plurality of piston blocks (1312) are located in the corresponding sliding cavities (1313), the ejector rods (1315) are fixedly connected with the bottoms of the corresponding piston blocks (1314), the plurality of the ejector rods (1315) are fixedly connected with the right side of the air pump (1315), and the air pump (1316) is fixedly connected with the inner wall of the ejector rod (1316).

2. The grinding machine for 3D printed products according to claim 1, characterized in that: the clamping rotating assembly (6) comprises a rotating rod (601), a first gear (602), a clamping disc (603), a second motor (604), a first connecting rod (605), a second connecting rod (606) and a second gear (607), the rotating rod (601), the first gear (602), the clamping disc (603) and the second gear (607) are arranged in two numbers, the two rotating rods (601) are respectively and rotatably connected with corresponding moving plates (5), the two first gears (602) are respectively sleeved on the outer sides of the corresponding rotating rods (601), the two clamping discs (603) are respectively and fixedly connected with the end portions of the corresponding rotating rods (601), the second motor (604) is fixedly connected with the outer side of the moving plate (5) on the left side, the first connecting rod (605) is fixedly connected with the output end of the second motor (604), the second connecting rod (606) is in sliding connection with the first connecting rod (605), the second gear (607) on the left side is sleeved on the outer side of the first connecting rod (607), and the second gear (605) on the right side is sleeved on the outer side of the second connecting rod (606).

3. The grinding machine for 3D printed products according to claim 1, characterized in that: the threaded rod (3) is rotatably connected with the working frame (1), a limiting groove matched with the moving block (4) is formed in the inner top wall of the working frame (1), threads are arranged on the outer side of the threaded rod (3), the threads are arranged in two and in two opposite directions, and the front pipe orifice and the rear pipe orifice of the four-way pipe head (9) are respectively communicated with the corresponding second scrap suction covers (12) through two second hoses.

4. The grinding machine for 3D printed products according to claim 2, characterized in that: the clamping device is characterized in that the first connecting rod (605) is rotationally connected with the moving plate (5), the second connecting rod (606) is rotationally connected with the moving plate (5) on the right side, the second gear (607) is in transmission connection with the first gear (602) through a chain, and the first connecting rod (605) and the second connecting rod (606) are arranged in a staggered mode with the clamping disc (603).

5. The grinding machine for 3D printed products according to claim 2, characterized in that: the inner side of the first connecting rod (605) is provided with a sliding groove, the sliding groove is matched with the second connecting rod (606), the outer side of the second connecting rod (606) is fixedly connected with a limiting sliding block, and the inner side of the first connecting rod (605) is provided with a sliding groove matched with the sliding block.

6. A grinding machine for 3D printed products as claimed in claim 3, characterized in that: the air outlet end of the air pump (1317) is communicated with the inner side of the air box (132) through a first hose, the piston block (1314) is in sliding connection with the bottom block (1312), and the top of the air box (132) is fixedly connected with an air outlet valve.