Flat grinding machine with lifting type clamping mechanism

Abstract

The utility model discloses a flat grinding machine with a lifting type clamping mechanism, which comprises a rack, and one or more grinding mechanisms are connected onto the rack; the grinding mechanism comprises a millstone motor vertically fixed on the rack, and a horizontal millstone is fixed at the top end of a main shaft of the millstone motor; the rack is slidably connected with one or two mounting seats which are arranged on the grinding mechanisms in a portal frame shape in a striding mode, the sliding path of the mounting seats on the rack passes through all the grinding mechanisms, and driving parts are connected between the mounting seats and the rack; fixing blocks are vertically and slidably connected to the two sides of the top of the mounting base, and a vertical electric telescopic rod is connected between at least one fixing block and the mounting base; a horizontal clamping row seat is rotationally connected between the two fixing blocks, and a clamping row used for clamping a grinding piece is fixedly connected to the clamping row seat. The automatic polishing machine not only can improve the polishing precision, but also has the advantages of being high in equipment operation stability, convenient in feeding clamping and discharging ejection control operation and good in environmental protection property.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment, and in particular to a flat grinder with a lifting clamping mechanism. Background Technology

[0002] In crystal processing, the entire surface of the crystal needs to be polished. With the development of the crystal industry, mechanized production methods have gradually replaced the traditional manual polishing process. Existing crystal polishing machines are similar to the energy-saving automatic crystal polishing machine with a double aluminum bar spindle disclosed in ZL202420831911.8. This machine has a polishing drive device connected to the frame that drives the grinding disc to rotate and rise. Two sliding tables are slidably connected to the frame, spanning the grinding disc. Aluminum clamping bars for holding multiple crystals in a row are also connected to the sliding tables, enabling the equipment to complete loading, clamping, polishing, and unloading operations, greatly improving processing efficiency. However, when using this type of equipment, the polishing drive device needs to control the distance between the grinding disc and the crystals held on the clamping bars while controlling the rotation of the grinding disc, in order to control the crystal polishing depth. This control process is easily affected by the rotating grinding disc, leading to a decrease in polishing accuracy.

[0003] Therefore, existing grinding machines suffer from poor grinding precision. Utility Model Content

[0004] The purpose of this utility model is to provide a flat mill with a lifting clamping mechanism.

[0005] This invention has the advantage of high grinding precision.

[0006] The technical solution of this utility model is as follows: A flat grinder with a lifting clamping mechanism includes a frame, on which one or more grinding mechanisms are connected; the grinding mechanism includes a grinding disc motor fixed vertically on the frame, and a horizontal grinding disc is fixedly connected to the top of the grinding disc motor spindle; one or two mounting seats in a gantry shape are slidably connected to the frame and span across the grinding mechanisms, the sliding path of the mounting seats on the frame passes through all the grinding mechanisms, and a driving part for driving the mounting seats to slide relative to the frame is connected between the mounting seats and the frame; fixed blocks are vertically slidably connected to both sides of the top of the mounting seats, and a vertical electric telescopic rod is connected between at least one fixed block and the mounting seat; a horizontal clamping row is rotatably connected between the two fixed blocks, and a clamping row for clamping the grinding workpiece is fixedly connected to the clamping row.

[0007] In the aforementioned flat mill with a lifting clamping mechanism, the main shaft of the grinding disc motor is externally rotatably sleeved with a bushing, and a fixing plate fixed on the frame is fixedly sleeved on the outside of the bushing; a horizontal mounting plate is fixed at the top of the bushing, and the mounting plate is detachably fixedly connected to the grinding disc.

[0008] In the aforementioned surface mill with a lifting clamping mechanism, a worm gear is rotatably connected to the clamping row and is arranged horizontally through the clamping row. Multiple clamp seats are meshed on the worm gear, and each clamp seat is rotatably connected to the clamping row in a vertical position. A clamp is sleeved and fixed to the bottom end of each clamp seat. A rotary motor for driving the worm gear to rotate is fixed on one of the fixed blocks, and a drive motor for driving the clamping row seats to rotate is fixed on the other fixed block.

[0009] In the aforementioned surface mill with a lifting clamping mechanism, the clamp includes a mold sleeve fixed on a clamping base. The mold sleeve has a funnel-shaped mold cavity, and a clamping block is fitted inside the mold cavity. The bottom surface of the clamping block has a clamping cavity, and the clamping block has multiple spaced elastic flaps corresponding to the edges of the clamping cavity. Each clamping block has a hollow support rod connected to its top, extending upwards through the mold sleeve and the clamping row. Horizontal support blocks and top blocks are sequentially spaced above the clamping row. Multiple vertically arranged top cylinders and support cylinders are connected to the clamping row base. The bottom end of the telescopic rod of each top-feeding cylinder is in contact with the top-feeding block, and the bottom end of the telescopic rod of each support cylinder passes through the top-feeding block and is fixedly connected to the support block; a circular piece is fixedly attached to the top of the hollow support rod and engaged with it inside the support block; a first spring is provided on the outer sleeve of the hollow support rod between the circular piece and the clamping plate; a top-feeding rod is connected to the top-feeding block at the position corresponding to each hollow support rod, and the top-feeding rod is slidably disposed inside the hollow support rod; a second spring is provided on the outer sleeve of the top-feeding rod between the top-feeding block and the support block.

[0010] In the aforementioned flat mill with a lifting clamping mechanism, both sides of the mounting base are C-shaped, and the C-shaped openings on both sides of the mounting base face the same direction; the clamping row is located between the C-shaped openings on both sides of the mounting base.

[0011] In the aforementioned flat mill with a lifting clamping mechanism, guide blocks are fixedly connected to the bottom of both sides of the mounting base, and the guide blocks are distributed in a Z-shape; a slider is connected to the bottom surface of the top of the guide block, and a slide rail fixed on the frame is slidably connected to the slider.

[0012] In the aforementioned flat mill with a lifting clamping mechanism, a protective cover is connected to the frame to cover the guide block.

[0013] In the aforementioned flat grinder with a lifting clamping mechanism, a splash guard is connected to the frame, which surrounds all the grinding mechanisms.

[0014] In the aforementioned flat mill with a lifting clamping mechanism, the drive unit includes a servo motor fixed on one side of the mounting base, a drive gear connected to the main shaft of the servo motor, and a rack fixed on the frame meshing with the drive gear.

[0015] Compared with the prior art, this utility model fixes the grinding disc motor in the grinding mechanism vertically on the frame, and fixes a horizontal grinding disc to the top of the grinding disc motor spindle. At the same time, two mounting seats in the shape of a gantry frame are slidably connected to the frame and span the grinding mechanism. Fixing blocks are vertically slidably connected to both sides of the top of the mounting seats. At least one fixing block and the mounting seat are connected by a vertical electric telescopic rod. A clamping plate seat for fixing the clamping plate is rotatably connected between the two fixing blocks. The electric telescopic rod fixed on the mounting seat drives the clamping plate to rise and fall, so that the distance between the grinding workpiece and the grinding disc on the clamping plate is not affected by the rotating grinding disc, thus improving the control accuracy and grinding accuracy.

[0016] In addition, in this utility model, the main shaft of the grinding disc motor is externally rotated and sleeved with a bushing. The bushing is fixed to the frame by a fixing plate. A horizontal mounting plate is fixed to the top of the bushing. The grinding disc is detachably and fixedly connected to the top surface of the mounting plate. By setting the mounting plate and bushing, wastewater and impurities during grinding are less likely to enter the main shaft of the grinding disc motor, thus making the equipment more stable in operation.

[0017] A drive motor for rotating the clamping seat is fixed on a fixed block, allowing the clamping seat, clamping row, and clamping parts to rotate and adjust the grinding angle of the clamping parts. A rotary motor for rotating the worm gear is fixed on another fixed block, allowing the worm gear to drive the clamping seat to rotate, enabling the clamping fixture and clamping parts to rotate, thereby allowing the entire outer surface of the bottom of the clamping parts to be ground.

[0018] Multiple support cylinders on the clamping seat can synchronously extend and retract to drive the support block to rise and fall. When the support block descends, it can drive the hollow support rod to descend through the disc, pushing the clamping block out of the mold cavity of the mold sleeve, so that the multiple elastic petals on the clamping block open, allowing the clamping part to be placed into the clamping cavity. When the support block rises, the No. 1 spring can lift the disc, causing the hollow support rod to move upward and reset, and drive the clamping block to retract into the trumpet-shaped mold cavity. The multiple elastic petals retract, so that the clamping cavity positions and clamps the clamping part, making the clamping operation of the clamping part more convenient.

[0019] Multiple top-loading cylinders on the clamping row can extend and push the top-loading block downwards simultaneously. When the top-loading block descends, it can drive the top-loading rod to slide inside the hollow support sleeve rod and push the clamping parts downwards, which facilitates the transfer of clamping parts between the two clamping rows and the unloading of clamping parts. After the multiple top-loading cylinders retract upwards to reset, the top-loading rod is fitted with a No. 2 spring located between the top-loading block and the support sleeve block, which can stably drive the top-loading rod to move vertically upwards to reset. The reset of the top-loading block has a high degree of smoothness.

[0020] By setting the two sides of the mounting base in a C-shape and placing the clamping row between the C-shaped openings on both sides of the mounting base, the gravity on the clamping row can be better applied to the mounting base, improving the stability of the equipment during operation.

[0021] By fixing Z-shaped guide blocks to the bottom of both sides of the mounting base, the sliders on the top and bottom surfaces of the guide blocks cooperate with the slide rails on the frame, making the mounting base highly stable in sliding. By fixing a servo motor to one side of the mounting base, the servo motor drives the drive gear to rotate on the rack parallel to the slide rail, and the mounting base can slide stably along the rack.

[0022] The frame is equipped with a protective cover that covers the guide blocks, which prevents wastewater and impurities during grinding from affecting the cooperation between the slider and the slide rail, thus improving the stability of the equipment during operation. The frame is also equipped with a splash guard that surrounds all the grinding mechanisms, which prevents wastewater and impurities during grinding from splashing outwards, thus improving environmental protection.

[0023] Therefore, this utility model not only improves grinding accuracy, but also has the advantages of high equipment operation stability, convenient feeding, clamping and unloading control, and good environmental protection. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural diagram showing the frame section when the protective cover is removed;

[0026] Figure 3 This is a sectional view of the frame section;

[0027] Figure 4 This is a structural diagram of the mounting base.

[0028] Figure 5 This is a structural schematic diagram from the other side of the mounting bracket.

[0029] Figure 6 This is a sectional view of the clamping section;

[0030] Figure 7 yes Figure 6 A magnified view of region A in the middle.

[0031] The labels in the attached diagram are as follows: 1-Frame, 2-Grinding disc motor, 3-Grinding disc, 4-Mounting base, 5-Electric telescopic rod, 6-Fixing block, 7-Clamping row seat, 8-Clamping row, 9-Shaft sleeve, 10-Mounting plate, 11-Worm gear, 12-Clamping seat, 13-Clamping fixture, 14-Rotating motor, 15-Drive motor, 16-Mold sleeve, 17-Mold cavity, 18-Clamping block, 19-Clamping cavity, 20-Hollow support sleeve rod, 21-Support sleeve block, 22-Ejector block, 23-Ejector cylinder, 24-Support sleeve cylinder, 25-Circular piece, 26-Spring No. 1, 27-Ejector rod, 28-Spring No. 2, 29-Guide block, 30-Slider, 31-Slide rail, 32-Protective cover, 33-Splashproof frame, 34-Servo motor, 35-Drive gear, 36-Rack, 37-Fixing piece. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0033] Example. A surface mill with a lifting clamping mechanism, configured as follows: Figures 1 to 7 As shown, the device includes a frame 1, on which one or more grinding mechanisms are connected; each grinding mechanism includes a grinding disc motor 2 fixed vertically on the frame 1, with a horizontal grinding disc 3 fixedly connected to the top of the main shaft of the grinding disc motor 2; one or two mounting seats 4, arranged in a gantry shape and spanning the grinding mechanisms, are slidably connected to the frame 1, with the sliding path of the mounting seats 4 passing through all the grinding mechanisms; a driving part for driving the mounting seats 4 to slide relative to the frame 1 is connected between the mounting seats 4 and the frame 1; fixed blocks 6 are vertically slidably connected to both sides of the top of the mounting seats 4, and a vertical electric telescopic rod 5 is connected between at least one fixed block 6 and the mounting seat 4; a horizontal clamping row seat 7 is rotatably connected between the two fixed blocks 6, and a clamping row 8 for clamping the grinding workpiece is fixedly connected to the clamping row seat 7.

[0034] The main shaft of the grinding disc motor 2 is externally rotatably sleeved with a bushing 9, and a fixing plate 37 fixed on the frame 1 is fixedly sleeved on the outside of the bushing 9; a horizontal mounting plate 10 is fixed at the top of the bushing 9, and the mounting plate 10 is detachably fixedly connected to the grinding disc 3.

[0035] A worm gear 11 is rotatably connected to the clamping row 8 and is horizontally arranged through the clamping row 8. Multiple clamp seats 12 are meshed on the worm gear 11, and each clamp seat 12 is rotatably connected to the clamping row 8 in a vertical position. A clamp 13 is sleeved and fixed to the bottom end of each clamp seat 12. A rotary motor 14 for driving the worm gear 11 to rotate is fixed on one of the fixing blocks 6, and a drive motor 15 for driving the clamping row seat 7 to rotate is fixed on the other fixing block 6.

[0036] The clamp 13 includes a mold sleeve 16 fixed on the clamp base 12. The mold sleeve 16 has a funnel-shaped mold cavity 17. A clamping block 18 is fitted inside the mold cavity 17. A clamping cavity 19 is provided on the bottom surface of the clamping block 18. Multiple elastic flaps are spaced apart on the edge of the clamping cavity 19 corresponding to the edge of the clamping block 18. A hollow support rod 20 is connected to the top of each clamping block 18, extending upwards through the mold sleeve 16 and the clamping row 8. Horizontal support blocks 21 and ejector blocks 22 are sequentially spaced above the clamping row 8. Multiple vertically arranged ejector cylinders 23 and support cylinders 24 are connected to the clamping row base 7. Each ejector cylinder 23... The bottom ends of the telescopic rods are all in contact with the top material block 22, and the bottom end of the telescopic rod of each support sleeve cylinder 24 passes through the top material block 22 and is fixedly connected to the support sleeve block 21; the top of the hollow support sleeve rod 20 is fixed with a circular piece 25 that fits and is engaged in the support sleeve block 21, and the hollow support sleeve rod 20 is fitted with a first spring 26 located between the circular piece 25 and the clamping row 8; a top material rod 27 is connected to the top material block 22 at the position corresponding to each hollow support sleeve rod 20, and the top material rod 27 is slidably disposed in the hollow support sleeve rod 20; the top material rod 27 is fitted with a second spring 28 located between the top material block 22 and the support sleeve block 21.

[0037] Both sides of the mounting base 4 are C-shaped, and the C-shaped openings on both sides of the mounting base 4 face the same direction; the clamping row seat 7 is located between the C-shaped openings on both sides of the mounting base 4.

[0038] Guide blocks 29 are fixedly connected to the bottom of both sides of the mounting base 4. The guide blocks 29 are distributed in a Z-shape. A slider 30 is connected to the bottom surface of the top of the guide block 29. A slide rail 31 fixed on the frame 1 is slidably connected to the slider 30.

[0039] The frame 1 is connected to a protective cover 32 that covers the guide block 29.

[0040] The frame 1 is connected to a splash guard 33 that surrounds all the grinding mechanisms.

[0041] The drive unit includes a servo motor 34 fixed on one side of the mounting base 4, a drive gear 35 connected to the main shaft of the servo motor 34, and a rack 36 fixed on the frame 1 meshing with the drive gear 35.

[0042] Working principle: The servo motor 34 on one side of the mounting base 4 drives the drive gear 35 to rotate. Since the drive gear 35 meshes on the rack 36, and the rack 36 is fixed on the frame 1, the drive gear 35 rolls on the rack 36 and drives the servo motor 34 and the mounting base 4 to move synchronously along the rack 36. Z-shaped guide blocks 29 are connected to the bottom of both sides of the mounting base 4. Multiple sliders 30 are connected to the bottom surface of the top of the guide blocks 29. The sliders 30 are slidably equipped with slide rails 31 that are fixed on the frame 1 and parallel to the rack 36, which makes the stability of the mounting base 4 high when it moves.

[0043] Move the first mounting base 4 to the feeding position, and then control the multiple vertical support cylinders 24 on the clamping base 7 to extend downwards simultaneously, causing the support block 21 to move down and compress the first spring 26 through the disc 25, which in turn drives the hollow support rod 20 to move down simultaneously. After the hollow support rod 20 moves down, it can push the clamping block 18 out of the mold cavity 17 of the mold sleeve 16. The multiple elastic petals around the clamping cavity 19 lose the restraint of the mold cavity 17 and open outwards, allowing the clamping component to be placed into the clamping cavity 19. Subsequently, the multiple support cylinders 24 synchronously reset upwards, and drive the support block 21 to reset upwards. The first spring 26 pushes the disc 25 and the hollow support rod 20 upwards to reset upwards. After the hollow support rod 20 moves up, it drives the clamping block 18 to retract into the trumpet-shaped mold cavity 17 in the mold sleeve 16. The multiple elastic petals are restrained and tightened by the mold cavity 17 to fix and clamp the clamping component in the clamping cavity 19.

[0044] Subsequently, the mounting base 4 moves above the grinding disc 3 of the grinding mechanism, and the grinding disc motor 2 fixed on the frame 1 drives the grinding disc 3 to rotate. Then, the vertical electric telescopic rods 5 on both sides of the top of the mounting base 4 extend and drive the two fixed blocks 6 to rise and fall synchronously. The clamping row seat 7 rotatably connected between the two fixed blocks 6 can also rise and fall synchronously. The clamping row 8 fixed on the clamping row seat 7, the clamps 13 on the clamping row 8 and the clamping parts clamped on the clamps 13 can all rise and fall synchronously, thereby controlling the distance between the clamping parts and the grinding disc of the frame and controlling the grinding accuracy. The drive motor 15 on one of the fixed blocks 6 can drive the clamping row seat 7 to rotate, and the rotation motor 14 on the other fixed block 6 can drive the worm gear 11 to rotate, thereby causing the multiple clamping seats 12 meshing on the worm gear 11 to rotate, causing the clamps 13 fixed on the clamping seats 12 and the clamping parts clamped on the clamps 13 to rotate, so that the entire side of the bottom of the clamping parts can be ground.

[0045] After the entire side of the bottom of the clamping component is ground, the clamping rows 8 on the two mounting seats 4 are rotated to a horizontally facing position, and the clamping cavities 19 on the two clamping rows 8 are opened and connected. Subsequently, the multiple ejector cylinders 23 on the clamping row seat 7 on the first mounting seat 4 extend downward, causing the ejector block 22 to move downward, and the ejector rod 27 on the ejector block 22 extends downward within the hollow support sleeve rod 20. After the bottom end of the ejector rod 27 extends into the clamping cavity 19, it can eject the clamping component in the clamping cavity 19 out of the clamping cavity 14 and into the clamping cavity 19 on the second mounting seat 4. Inside, after the support cylinder 24 on the second mounting base 4 is reset, multiple top cylinders 23 are also reset upwards. The second spring 28, which is sleeved outside the top rod 27 and located between the support block 21 and the top block 22, can vertically drive the top block 22 and the top rod 27 to reset upwards, thus realizing the docking of the clamping parts. Subsequently, the two electric telescopic rods 5 on the second mounting base 4 begin to control the distance between the clamping parts on the clamp 13 and the grinding disc 3, and cooperate with the rotating motor 14 and the drive motor 15 to grind all the sides of the other end of the clamping parts.

[0046] After the clamping parts are completely ground, the second mounting base 4 is moved to the unloading position; the support cylinder 24 on the second mounting base 4 extends downward to open the clamping cavity 19, and then the ejector cylinder 23 extends downward to push the ejector rod 27 to push the clamping parts in the clamping cavity 19 downward, ensuring that the clamping parts can be smoothly removed from the reinforcing 19.

[0047] The main shaft of the grinding disc motor 2 is externally rotated and fitted with a bushing 9. The bushing 9 is fixed to the frame 1 by a fixing plate 37, which provides high stability. At the same time, a horizontal mounting plate 10 is fixed to the top of the bushing 9. The grinding disc 3 is detachably and fixedly connected to the top surface of the mounting plate 10. By setting the mounting plate 10 and the bushing 9, wastewater and impurities during grinding are less likely to enter the main shaft of the grinding disc motor 2, thus ensuring high operational stability of the equipment.

[0048] By setting the two sides of the mounting base 4 in a C-shape and placing the clamping row seat 7 between the C-shaped openings on both sides of the mounting base 4, the gravity on the clamping row seat 7 can be better applied to the mounting base 4, improving the stability of the equipment during operation.

[0049] A protective cover 32 is connected to the frame 1 to cover the guide block 29, so that the wastewater and impurities during grinding are less likely to affect the cooperation between the slider 30 and the slide rail 31, thus improving the stability of the equipment during operation; a splash guard 33 is connected to the frame 1 to surround all the grinding mechanisms, so that the wastewater and impurities during grinding are less likely to splash outward, thus improving environmental protection.

Claims

1. A flat grinder with a lifting clamping mechanism, comprising a frame (1) to which one or more grinding mechanisms are connected; characterized in that: The grinding mechanism includes a grinding disc motor (2) fixed in a vertical arrangement on the rack (1), and the top end of the main shaft of the grinding disc motor (2) is fixedly connected with a horizontal grinding disc (3); one or two mounting seats (4) in the form of a gantry are slidably connected to the rack (1) and span the grinding mechanism, the sliding path of the mounting seat (4) on the rack (1) passes through all the grinding mechanisms, and a driving portion for driving the mounting seat (4) to slide relative to the rack (1) is connected between the mounting seat (4) and the rack (1); two fixed blocks (6) are vertically and slidably connected to the top of the mounting seat (4), and at least one fixed block (6) and the mounting seat (4) are connected with a vertical electric telescopic rod (5); a horizontal clamping row seat (7) is rotatably connected between the two fixed blocks (6), and the clamping row seat (7) is fixedly connected with a clamping row (8) for clamping the polishing piece.

2. A flat grinder with a lifting clamping mechanism according to claim 1, characterized in that: The main shaft of the grinding disc motor (2) is rotatably sleeved with a shaft sleeve (9), and the shaft sleeve (9) is fixedly sleeved with a fixed sheet (37) fixed on the rack (1); the top end of the shaft sleeve (9) is fixedly connected with a horizontal mounting disc (10), and the mounting disc (10) is detachably fixedly connected with the grinding disc (3).

3. A flat grinder with a lifting clamp mechanism according to claim 1, characterized in that: The clamping row (8) is rotatably connected with a horizontal worm (11) arranged through the clamping row (8), the worm (11) is meshingly connected with a plurality of clamp seats (12), each clamp seat (12) is rotatably connected to the clamping row (8) in a vertical manner; the bottom end of each clamp seat (12) is fixedly sleeved with a clamp (13); one of the fixed blocks (6) is fixedly connected with a rotating motor (14) for driving the worm (11) to rotate, and the other fixed block (6) is fixedly connected with a driving motor (15) for driving the clamping row seat (7) to rotate.

4. A flat grinder with a lifting clamp mechanism according to claim 3, characterized in that: The clamp (13) includes a die sleeve (16) fixed on the clamp seat (12), a trumpet-shaped die cavity (17) is arranged in the die sleeve (16), a clamp block (18) is arranged in the die cavity (17) in a matched mode, a clamp cavity (19) is arranged on the bottom surface of the clamp block (18), a plurality of elastic petals are arranged on the edge of the clamp cavity (19) in a spaced mode; the top end of each clamp block (18) is connected with a hollow supporting sleeve rod (20) penetrating through the die sleeve (16) and the clamping row (8) in an upward mode; a horizontal supporting sleeve block (21) and a material lifting block (22) are arranged on the clamping row (8) in a spaced mode; a plurality of material lifting cylinders (23) and supporting sleeve cylinders (24) are connected to the clamping row seat (7) in a vertical mode, the bottom end of the telescopic rod of each material lifting cylinder (23) is in contact with the material lifting block (22), the bottom end of the telescopic rod of each supporting sleeve cylinder (24) penetrates through the material lifting block (22) and is fixedly connected to the supporting sleeve block (21); the top of the hollow supporting sleeve rod (20) is fixed with a disc (25) which is clamped in the supporting sleeve block (21), the hollow supporting sleeve rod (20) is sleeved with a first spring (26) between the disc (25) and the clamping row (8); the position corresponding to each hollow supporting sleeve rod (20) on the material lifting block (22) is connected with a material lifting rod (27), the material lifting rod (27) is arranged in the hollow supporting sleeve rod (20) in a matched sliding mode; the material lifting rod (27) is sleeved with a second spring (28) between the material lifting block (22) and the supporting sleeve block (21).

5. A flat grinder with a lifting clamp mechanism according to claim 1, characterized in that: The two sides of the mounting seat (4) are arranged in a C-shaped mode, and the C-shaped openings on the two sides of the mounting seat (4) face the same direction.

6. A flat grinder with a lifting clamp mechanism according to claim 1, characterized in that: The bottom of each side of the mounting seat (4) is fixedly connected with a guide block (29), and the guide blocks (29) are arranged in a Z-shaped mode.

7. A flat grinder with a lifting clamp mechanism according to claim 6, characterized in that: The top of the guide block (29) is connected with a sliding block (30), and the sliding block (30) is slidingly connected with a sliding rail (31) fixed on the rack (1).

8. A flat grinder with a lifting clamp mechanism according to claim 1, characterized in that: The rack (1) is connected with a protective cover (32) covering the guide blocks (29).

9. A flat grinder with a lifting clamp mechanism according to claim 1, characterized in that: The rack (1) is connected with a splash-proof frame (33) surrounding all the grinding mechanisms. The driving part includes a servo motor (34) fixed on one side of the mounting seat (4), a driving gear (35) connected to the main shaft of the servo motor (34), and a rack (36) fixed on the rack (1) and engaged with the driving gear (35).

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