Sample clamping tool for spectrum sample grinding machine

Abstract

The utility model relates to a sample clamping tool for a spectrum sample grinding machine, which effectively solves the problems that a test sample is manually pressed downwards and is very inconvenient to operate and the like. Which comprises a sample grinding machine main body and a grinding sheet arranged at the top of the sample grinding machine main body, and is characterized in that a fan-shaped grinding hole is formed in the top of the sample grinding machine main body, a mounting seat is arranged at the top of the sample grinding machine main body, the mounting seat and the fan-shaped grinding hole are coaxial, and a rotating shaft is coaxially and rotatably connected to the mounting seat; the grinding device is ingenious in structure and convenient to use, through the arrangement of the pressing rod, the motor, the arc-shaped rod and the like, the pressing rod is pressed by the arc-shaped rod and continuously moves downwards, after a test sample makes contact with the grinding piece, the rotating speed of the motor is reduced, the test sample has an extremely slow downward displacement process, and the downward displacement distance is related to the grinding degree of the test sample; therefore, the effect of automatically controlling the grinding degree of the test sample is achieved, direct manual participation is reduced, and the use safety of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping equipment for spectral sample grinding machines, in particular to a sample clamping tooling for a spectral sample grinding machine. Background Technique

[0002] A spectral sample grinding machine is a device specifically used for preparing samples for spectral analysis, and it plays a crucial role in the sample preparation stage before spectral analysis. This device is mainly used for finely grinding and polishing solid materials to obtain a flat, pollution-free sample surface suitable for spectral analysis. Spectral analysis usually requires a highly smooth and flat sample surface to ensure the accuracy and repeatability of the analysis results.

[0003] Chinese Patent with application number CN202222463403.2 discloses a semi-automatic sample clamping device for a spectral sample grinding machine, which includes two mounting columns. A pushing plate is arranged at the top of one mounting column. The pushing plate includes a pressing plate, and a movable plate is movably connected to one side of the pressing plate. A fixing plate is arranged at the top of the other mounting column. Springs are arranged on the front and back of the top ends of one side of the movable plate and the fixing plate. Erection plates are arranged on one side of the fixing plate and the movable plate. A V-shaped clamping plate is connected to one side of the erection plate. The top end of one side of the pressing plate is fixedly connected to a portal frame, and a threaded rod is threadedly connected inside the portal frame. The bottom end of the threaded rod is movably connected to a pushing block. After the specimen is fixed between the two V-shaped clamping plates in the utility model, the specimen can be pressed downward to make the erection plate move along the path of the longitudinal movable rod moving inside the fixing plate or the movable plate, thereby overcoming the resistance of the spring, which is beneficial to keep the bottom end of the specimen in continuous contact with the grinding part of the spectral sample grinding machine and ensure the grinding degree of the bottom end of the specimen.

[0004] However, the existing clamping tooling for spectral sample grinding machines still has the following problems:

[0005] 1. There are too many places that require manual participation. To ensure the grinding degree of the bottom of the test sample, it is also necessary to manually press down the test sample, which is very inconvenient to operate.

[0006] 2. This device can only operate on relatively large test samples. When the test sample is small, pressing down manually is likely to make the worker's fingers directly contact the grinding disc, causing safety problems. Content of the Utility Model

[0007] In view of the above situation, to overcome the defects of the prior art, the purpose of the utility model is to provide a sample clamping tooling for a spectral sample grinding machine, which effectively solves the problems mentioned in the background technique.

[0008] The technical solution it adopts is that the utility model includes a sample grinding machine main body and a grinding disc placed on the top of the sample grinding machine main body. It is characterized in that a fan-shaped grinding hole is opened at the top of the sample grinding machine main body, and a mounting seat is arranged on the top of the sample grinding machine main body. The mounting seat is coaxial with the fan-shaped grinding hole. A rotating shaft is rotatably connected to the mounting seat coaxially. A support plate is fixed to the end of the rotating shaft away from the mounting seat. A flap is rotatably connected to the end of the support plate away from the rotating shaft. A clamping assembly that slides up and down is arranged at the end of the flap away from the support plate. A test sample is clamped on the clamping assembly.

[0009] A secondary bevel gear is coaxially fixed on the rotating shaft. A speed reducer is fixed to the top of the sample grinding machine main body. A primary bevel gear is coaxially arranged at the output end of the speed reducer. The primary bevel gear meshes with the secondary bevel gear. A motor is coaxially arranged at the input end of the speed reducer.

[0010] The clamping assembly includes a circular plate. A plurality of chutes that are circumferentially evenly distributed are opened on the circular plate. Clamping claws are slidably connected in the chutes. A limiting groove is opened in the chutes. A limiting block that matches the limiting groove is fixed on the clamping claws. The test sample is located between the plurality of clamping claws. A sliding rod that penetrates the flap is coaxially fixed to the top of the circular plate. A connecting plate is coaxially fixed on the sliding rod. The connecting plate and the flap are connected by a spring.

[0011] A pressing rod is fixed to one side of the connecting plate. Two symmetrically distributed mounting blocks are fixed to the top of the sample grinding machine main body. An inclined arc-shaped rod is rotatably connected between the two mounting blocks. The arc-shaped rod is concentric with the mounting seat.

[0012] Preferably, a limiting plate is fixed to the bottom of the support plate. The end of the limiting plate away from the support plate is located below the flap. A same turning spring is fixed to the top of the support plate and the flap. A positioning block is fixed to one side of the top of the flap. A positioning hole is opened in the positioning block. A mounting plate is fixed to one side of the support plate. A pull rod is slidably connected to the top of the mounting plate. A positioning column is coaxially fixed to one end of the pull rod. A tapered block is coaxially fixed to the end of the positioning column away from the pull rod. The cross-section of the tapered block is a right triangle. A spring plate is coaxially fixed to the end of the pull rod away from the positioning column. The spring plate and the mounting plate are connected by a spring.

[0013] Preferably, stepped grooves are opened on the plurality of clamping claws.

[0014] Preferably, an adjusting plate is fixed to the end of the arc-shaped rod close to the mounting block. A plurality of adjusting holes that are circumferentially evenly distributed are opened on the adjusting plate. A through hole is opened on one of the mounting blocks. An adjusting pin is inserted into the through hole. The diameter of the adjusting pin is the same as that of the adjusting hole. A connecting rope is fixed to the end of the adjusting pin away from the adjusting hole. The end of the connecting rope away from the adjusting pin is fixed to the mounting block.

[0015] Preferably, a protective shell is fixed on the top of the grinding machine main body, and the motor, the reducer, the main bevel gear, the sub-bevel gear and the mounting seat are all located inside the protective shell.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. Through the settings of the pressing rod, the motor and the arc-shaped rod, etc., when the motor starts to drive the clamping assembly to rotate, the pressing rod contacts the arc-shaped rod. As the motor drives the flap and the like to continue rotating, the pressing rod is pressed by the arc-shaped rod and moves downward continuously. When the test sample contacts the grinding disc, the motor speed decreases, so that the test sample has a very slow downward displacement process. The downward displacement distance is related to the grinding degree of the test sample, thereby realizing the effect of automatically controlling the grinding degree of the test sample, reducing the direct participation of people, and improving the use safety of the equipment.

[0018] 2. Through the settings of the positioning hole, the positioning column and the conical block, etc., during the flipping process of the flap, the positioning block first contacts the inclined surface of the conical block. The conical block and the positioning column slide to one side under the extrusion of the positioning block until the conical block coincides with the positioning hole. The conical block and the positioning column are inserted into the inside of the positioning hole under the action of the spring. At this time, the conical block limits the flap in a state, and there is no need for workers to continuously hold the flap, reducing the labor intensity of workers and facilitating the installation of test samples. Description of the Drawings

[0019] Figure 1 is a perspective view of the utility model.

[0020] Figure 2 is a schematic structural view of the mounting seat in the utility model.

[0021] Figure 3 is a schematic structural view of the flipping spring in the utility model.

[0022] Figure 4 is a schematic structural view of the clamping assembly in the utility model.

[0023] Figure 5 is a schematic structural view of the stepped groove in the utility model.

[0024] Figure 6 is a schematic structural view of the conical block in the utility model.

[0025] Figure 7 is a schematic structural view of the connecting rope in the utility model.

[0026] Explanation of the reference numerals in the schematic diagram:

[0027] 1. Grinding machine main body; 2. Grinding disc; 3. Grinding hole; 4. Mounting seat; 5. Rotating shaft; 6. Support plate; 7. Flap; 8. Test sample; 9. Sub-bevel gear; 10. Reducer; 11. Main bevel gear; 12. Motor; 13. Circular plate; 14. Chute; 15. Clamping jaw; 16. Limit block; 17. Slide bar; 18. Connecting plate; 19. Pressing rod; 20. Mounting block; 21. Arc-shaped rod; 22. Limit plate; 23. Torsion spring; 24. Positioning block; 25. Positioning hole; 26. Mounting plate; 27. Pull rod; 28. Positioning column; 29. Tapered block; 30. Spring plate; 31. Step groove; 32. Adjusting plate; 33. Adjusting hole; 34. Adjusting pin; 35. Connecting rope; 36. Protective shell. Detailed implementation manner

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Given by Figures 1 to 6 It includes a grinding machine main body 1 and a grinding disc 2 placed on the top of the grinding machine main body 1. There are many types of grinding discs 2, such as grinding wheels, sandpapers or special grinding discs. In this embodiment, a grinding wheel is used. The grinding machine main body 1 and the grinding disc 2 are both prior arts and will not be elaborated here. A fan-shaped grinding hole 3 is opened at the top of the grinding machine main body 1. A mounting seat 4 is provided at the top of the grinding machine main body 1. The mounting seat 4 is coaxial with the fan-shaped grinding hole 3. A rotating shaft 5 is rotatably connected to the mounting seat 4 coaxially. One end of the rotating shaft 5 away from the mounting seat 4 is fixed with a support plate 6. One end of the support plate 6 away from the rotating shaft 5 is rotatably connected with a flap 7. A clamping assembly that slides up and down is provided at one end of the flap 7 away from the support plate 6. A test sample 8 is clamped on the clamping assembly. Through the settings of the clamping assembly, the support plate 6 and the flap 7, when grinding the test sample 8, turn the flap 7 over so that the clamping assembly faces upward, and then install the test sample 8 on the clamping assembly, eliminating the need for manual holding of the test sample 8 during grinding, thus improving the safety of grinding.

[0030] In order to reduce the manual operation process, improve the degree of automation and enhance the safety of workers, a secondary bevel gear 9 is coaxially fixed on the rotating shaft 5. A speed reducer 10 is fixed on the top of the grinding machine body 1. The output end of the speed reducer 10 is coaxially provided with a main bevel gear 11. The main bevel gear 11 meshes with the secondary bevel gear 9. The input end of the speed reducer 10 is coaxially provided with a motor 12. A control panel is arranged on the grinding machine body 1, and the control panel is electrically connected to the motor 12. Through the settings of the motor 12, the speed reducer 10, the main bevel gear 11, etc., when the motor 12 is started, it can drive the support plate 6, the flap 7 and the clamping assembly to rotate into the grinding hole 3;

[0031] In order to facilitate the clamping of test samples 8 with different diameters, the clamping assembly includes a circular plate 13. A plurality of circumferentially evenly distributed sliding grooves 14 are formed in the circular plate 13. In this embodiment, the number of sliding grooves 14 is three. A clamping jaw 15 is slidably connected in the sliding groove 14. A limiting groove is formed in the sliding groove 14. A limiting block 16 matching the limiting groove is fixed on the clamping jaw 15. The test sample 8 is located between a plurality of clamping jaws 15. A plurality of connecting blocks located on one side of the sliding groove 14 are fixed on the top of the circular plate 13. The connecting blocks are connected to one end of the clamping jaw 15 by springs. When installing the test sample 8, the test sample 8 is placed flat between the three clamping jaws 15. The three clamping jaws 15 perform central positioning on the test sample 8 under the action of the springs. A sliding rod 17 penetrating the flap 7 is coaxially fixed on the top of the circular plate 13. A connecting plate 18 is coaxially fixed on the sliding rod 17. The connecting plate 18 is connected to the flap 7 by a spring;

[0032] In order to facilitate the adjustment of the contact degree between the test sample 8 and the grinding disc 2 and ensure the grinding degree of the bottom surface of the test sample 8, a pressing rod 19 is fixed on one side of the connecting plate 18. Two symmetrically distributed mounting blocks 20 are fixed on the top of the grinding machine body 1. An inclined arc-shaped rod 21 is rotatably connected between the two mounting blocks 20. The arc-shaped rod 21 is concentric with the mounting seat 4. Through the settings of the pressing rod 19, the motor 12 and the arc-shaped rod 21, etc., when the motor 12 is started to drive the clamping assembly to rotate, the pressing rod 19 comes into contact with the arc-shaped rod 21. As the motor 12 drives the flap 7 and the like to continue to rotate, the pressing rod 19 is subjected to the pressure of the arc-shaped rod 21 and continuously moves downward. When the test sample 8 contacts the grinding disc 2, the rotation speed of the motor 12 decreases, so that the test sample 8 has a very slow downward displacement process. The downward displacement distance is related to the grinding degree of the test sample 8. In this way, the effect of automatically controlling the grinding degree of the test sample 8 is realized, reducing the direct participation of humans and improving the use safety of the equipment.

[0033] Reference Figure 3 and Figure 6As shown in the figure, considering that when installing the test sample 8, it is rather troublesome for workers to keep holding the flap 7 after it flips. A limiting plate 22 is fixed to the bottom of the support plate 6. One end of the limiting plate 22 away from the support plate 6 is located below the flap 7. The same flipping spring 23 is fixed to the top of the support plate 6 and the flap 7. A positioning block 24 is fixed to one side of the top of the flap 7. A positioning hole 25 is formed in the positioning block 24. The shape of the positioning hole 25 can be any one of a rectangle, a circle, a rhombus, etc. An installation plate 26 is fixed to one side of the support plate 6. A pull rod 27 is slidably connected to the top of the installation plate 26. One end of the pull rod 27 is coaxially fixed with a positioning column 28. One end of the positioning column 28 away from the pull rod 27 is coaxially fixed with a tapered block 29. The cross-section of the tapered block 29 is a right triangle. When the flap 7 flips, the movement trajectory of the positioning hole 25 coincides with that of the tapered block 29. One end of the pull rod 27 away from the positioning column 28 is coaxially fixed with a spring plate 30. The spring plate 30 is connected to the installation plate 26 by a spring. Through the settings of the positioning hole 25, the positioning column 28, the tapered block 29, etc., during the flipping process of the flap 7, the positioning block 24 first contacts the inclined surface of the tapered block 29. The tapered block 29 and the positioning column 28 slide to one side under the extrusion of the positioning block 24 until the tapered block 29 coincides with the positioning hole 25. The tapered block 29 and the positioning column 28 are inserted into the interior of the positioning hole 25 under the action of the spring. At this time, the tapered block 29 keeps the flap 7 in a limited state, eliminating the need for workers to continuously hold the flap 7, reducing the labor intensity of workers and facilitating the installation of the test sample 8.

[0034] Reference Figure 5 As shown in the figure, in order to facilitate the clamping assembly to clamp test samples 8 with different thicknesses, stepped grooves 31 are formed in multiple clamping claws 15.

[0035] Reference Figure 7 As shown in the figure, considering that the inclination angle of the arc-shaped rod 21 varies, in order to facilitate the adjustment of the arc-shaped rod 21, an adjustment plate 32 is fixed to one end of the arc-shaped rod 21 close to the installation block 20. Multiple adjustment holes 33 evenly distributed in a circumferential direction are formed in the adjustment plate 32. A through hole is formed in one of the installation blocks 20. An adjustment pin 34 is inserted into the through hole. The diameter of the adjustment pin 34 is the same as that of the adjustment hole 33. One end of the adjustment pin 34 away from the adjustment hole 33 is fixed with a connecting rope 35. One end of the connecting rope 35 away from the adjustment pin 34 is fixed to the installation block 20. The connecting rope 35 is used to prevent the adjustment pin 34 from being lost. Through the settings of the adjustment plate 32, the adjustment holes 33, and the adjustment pin 34, the worker first pulls out the adjustment pin 34 and then rotates the adjustment plate 32. After the arc-shaped rod 21 reaches the specified inclination angle, the adjustment pin 34 is inserted into the corresponding adjustment hole 33 to quickly adjust the arc-shaped rod 21.

[0036] ReferenceFigure 1 As shown, in order to prevent damage to the motor 12, the speed reducer 10, the secondary bevel gear 9 and the primary bevel gear 11, a protective housing 36 is fixed to the top of the sample grinder, and the motor 12, the speed reducer 10, the primary bevel gear 11, the secondary bevel gear 9 and the mounting base 4 are all located inside the protective housing 36.

[0037] When the present utility model is in use:

[0038] First, flip the flap 7 so that the clamping assembly faces upward, place the test sample 8 flat between the plurality of clamping claws 15, and place the test sample 8 at the corresponding stepped groove 31 position according to the thickness of different test samples 8;

[0039] Then, during the flipping process of the flap 7, the positioning block 24 first contacts the inclined surface of the tapered block 29. The tapered block 29 and the positioning post 28 slide to one side under the extrusion of the positioning block 24 until the tapered block 29 coincides with the positioning hole 25. The tapered block 29 and the positioning post 28 are inserted into the inside of the positioning hole 25 under the action of the spring. At this time, the tapered block 29 limits the state of the flap 7;

[0040] Secondly, during the process of the motor 12 starting to drive the clamping assembly to rotate, the pressure rod 19 contacts the arc-shaped rod 21. As the motor 12 drives the flap 7 and the like to continue to rotate, the pressure rod 19 is subjected to the pressure of the arc-shaped rod 21 and continues to move downward. When the test sample 8 contacts the grinding disc 2, the rotation speed of the motor 12 decreases, so that the test sample 8 has a very slow downward displacement process;

[0041] Finally, after the test sample 8 is polished, the motor 12 rotates in reverse. When the arc-shaped rod 21 and the pressing plate are disengaged from contact, the clamping assembly resets under the action of the spring, and then the test sample 8 can be removed.

[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sample clamping tool for a spectral sample grinder, comprising a sample grinder body (1), a grinding sheet (2) placed on the top of the sample grinder body (1), characterized in that: A fan-shaped grinding hole (3) is provided on the top of the sample grinding machine body (1), and a mounting seat (4) is provided on the top of the sample grinding machine body (1), the mounting seat (4) and the fan-shaped grinding hole (3) are coaxial, a rotating shaft (5) is coaxially connected to the mounting seat (4), a support plate (6) is fixed to the end of the rotating shaft (5) away from the mounting seat (4), a flap (7) is rotatably connected to the end of the support plate (6) away from the rotating shaft (5), and a clamping assembly that slides up and down is provided on the end of the flap (7) away from the support plate (6), and a test sample (8) is clamped on the clamping assembly; A secondary bevel gear (9) is coaxially fixed on the rotating shaft (5); a reducer (10) is fixed on the top of the sample grinding machine body (1); a main bevel gear (11) is coaxially arranged on the output end of the reducer (10); the main bevel gear (11) is meshed with the secondary bevel gear (9); and a motor (12) is coaxially arranged on the input end of the reducer (10); The clamping assembly comprises a circular plate (13), a plurality of circumferentially evenly distributed sliding grooves (14) are provided on the circular plate (13), a clamping claw (15) is slidably connected in the sliding groove (14), a limiting groove is provided in the sliding groove (14), a limiting block (16) matching the limiting groove is fixed on the clamping claw (15), the test sample (8) is located between the plurality of clamping claws (15), a sliding rod (17) penetrating the flap (7) is coaxially fixed on the top of the circular plate (13), a connecting plate (18) is coaxially fixed on the sliding rod (17), and the connecting plate (18) is connected to the flap (7) via a spring; A pressure rod (19) is fixed on one side of the connecting plate (18), and two symmetrically distributed mounting blocks (20) are fixed on the top of the sample grinding machine body (1). An inclined arc rod (21) is rotatably connected between the two mounting blocks (20), and the arc rod (21) is concentrically arranged with the mounting seat (4).

2. The sample clamping tool for a spectral sample grinding machine according to claim 1, characterized in that: A limiting plate (22) is fixed at the bottom of the support plate (6), and one end of the limiting plate (22) away from the support plate (6) is located below the flap (7). The support plate (6) and the flap (7) are fixed with the same flip spring (23) at the top, and a positioning block (24) is fixed on one side of the top of the flap (7). A positioning hole (25) is provided on the positioning block (24). A mounting plate (26) is fixed on one side of the support plate (6). A pull rod (27) is slidably connected to the top of the mounting plate (26). A positioning column (28) is coaxially fixed to one end of the pull rod (27). A conical block (29) is coaxially fixed to the end of the positioning column (28) away from the pull rod (27). The cross section of the conical block (29) is a right triangle. A spring plate (30) is coaxially fixed to the end of the pull rod (27) away from the positioning column (28). The spring plate (30) is connected to the mounting plate (26) through a spring.

3. The sample clamping tool for a spectral sample grinding machine according to claim 2, characterized in that: A plurality of the clamping claws (15) are each provided with a stepped groove (31).

4. The sample clamping tool for a spectral sample grinding machine according to claim 3 is characterized in that: An adjustment plate (32) is fixed to one end of the arc rod (21) close to the mounting block (20), and a plurality of adjustment holes (33) evenly distributed around the circumference are provided on the adjustment plate (32). A through hole is provided on one of the mounting blocks (20), and an adjustment pin (34) is inserted into the through hole. The diameter of the adjustment pin (34) is consistent with that of the adjustment hole (33). A connecting rope (35) is fixed to one end of the adjustment pin (34) away from the adjustment hole (33), and the end of the connecting rope (35) away from the adjustment pin (34) is fixedly connected to the mounting block (20).

5. The sample clamping tool for a spectral sample grinding machine according to claim 4, characterized in that: A protective shell (36) is fixed on the top of the sample grinding machine body (1), and the motor (12), the reducer (10), the main bevel gear (11), the auxiliary bevel gear (9) and the mounting seat (4) are all located inside the protective shell (36).

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