Sample clamping tool accurate in positioning

Abstract

The sample clamping tool comprises a bottom frame, a clamping cover is connected to the outer side of a convex ring part of the bottom frame in a sleeved mode, a detachable fixing assembly is arranged between the clamping cover and the bottom frame, a plurality of springs are fixedly connected to the inner wall of the bottom of the bottom frame, the tops of the springs are fixedly connected with limiting pipes, and the limiting pipes are fixedly connected to the outer side of the convex ring part of the bottom frame. A base plate is movably connected to the inner space of the convex ring part of the bottom frame, the base plate is fixed to the limiting pipe, a plurality of sliding grooves are formed in the convex ring part of the top of the bottom frame, trapezoidal blocks are movably connected into the sliding grooves, a plurality of inserting grooves are formed in the upper surfaces of the trapezoidal blocks, and a plurality of first magnetic strips are fixedly connected to the circumferential outer wall of the clamping cover. According to the utility model, samples placed on the cushion plate can be kept stable by fixing the cushion plate, meanwhile, the samples with different thicknesses can be stably placed, and the trapezoidal block can be prevented from moving out of the bottom frame through the baffle plate.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a sample clamping tool with precise positioning. Background Art

[0002] Sample clamping is widely used in optical machinery. When placing samples, they need to be positioned and clamped to ensure accuracy and sample stability.

[0003] After searching, a sample clamping device disclosed with announcement number CN220807001U is found. It positions the working surface by pressing the edge, and can uniformly position the working surfaces of samples of different thicknesses, making the positioning of the sample working surface more convenient and consistent, and has excellent practicality. However, the support of the sample pad is supported by a spring, which is unstable and easy to shrink, thereby changing the position of the sample pad, and then causing the position of the sample to change, which is not conducive to scanning the sample. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a sample clamping tool with precise positioning.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The top of the fixing plate is fixedly mounted on the fixing plate, and the fixing plate is fixedly mounted on the fixing plate, wherein the fixing plate is fixedly mounted on the fixing plate

[0007] As a further solution of the present invention, the connecting assembly includes multiple threaded holes, which are opened on the circular ring at the bottom of the base frame. The outer walls of multiple sides of the clamping cover are fixedly connected to connecting blocks, and connecting holes are opened in the connecting blocks. A plug-in rack is inserted into the connecting holes. A screw is movably connected to one side of the plug-in rack, and the screw is threadedly connected to its corresponding threaded hole.

[0008] As a further solution of the present invention, a plurality of baffles are fixedly connected to the bottom circular ring portion of the base frame.

[0009] As a further solution of the present invention, the baffle is in contact with the groove at the bottom of the trapezoidal block.

[0010] As a further solution of the present invention, a plurality of rolling grooves are provided on the bottom of the trapezoidal block.

[0011] As a further solution of the present invention, balls are movably connected in the plurality of rolling grooves, and the balls are in contact with the base frame.

[0012] As a further solution of the present invention, a push handle is fixedly connected to the outer wall of one side of the trapezoidal block.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can not only assist in clamping the position of the pad by using the combination of the trapezoidal block and the insert plate, but also limit and fix the top of the pad by the clamping cover, thereby keeping the position of the sample placed on the pad stable, avoiding the pad from easily shifting and causing abnormal sample scanning, and improving the use effect of the device.

[0015] 2. The utility model adopts a movable trapezoidal block design, so that the trapezoidal block can adapt to pads of different heights, thereby enabling the device to stably place samples of different thicknesses, and is easy to operate, thereby improving the flexibility of the device.

[0016] 3. The utility model limits the moving distance of the trapezoidal block by providing a baffle, thereby preventing the trapezoidal block from moving out of the chassis. At the same time, the ball bearings make the trapezoidal block move more smoothly, thereby preventing the trapezoidal block from getting stuck during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a sample clamping tool with precise positioning proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of a sample clamping tool with precise positioning proposed by the utility model;

[0019] Figure 3 This is a partial cross-sectional structural diagram of a sample clamping tool with precise positioning proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the enlarged structure of part A of a sample clamping tool with precise positioning proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the enlarged structure of the trapezoidal block of a sample clamping tool with precise positioning proposed by the utility model.

[0022] In the figure: 1. Base frame; 2. Screw; 3. Clamping cover; 4. Pad; 5. Limiting tube; 6. Slide groove; 7. Baffle; 8. Threaded hole; 9. Trapezoidal block; 10. Insert rack; 11. Spring; 12. First magnetic strip; 13. Fixed block; 14. Second magnetic strip; 15. Limiting groove; 16. Insert plate; 17. Slot; 18. Push handle; 19. Ball; 20. Rolling groove. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. The embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] Reference Figure 1-Figure 5 , a sample clamping tool with precise positioning, including a base frame 1 and a connecting component, a clamping cover 3 is sleeved on the outer side of the convex ring part of the base frame 1, a detachable fixing component is provided between the clamping cover 3 and the base frame 1, a plurality of springs 11 are welded on the bottom inner wall of the base frame 1, and a limiting tube 5 is welded on the top of the spring 11, and a pad 4 is slidably connected to the inner space of the convex ring part of the base frame 1, and the pad 4 is fixed to the limiting tube 5, the sample is placed on the pad 4, and then the clamping cover 3 is sleeved on the outer side of the convex ring at the top of the base frame 1, and the clamping cover 3 is squeezed to move downward, and the spring 11 contracts, a plurality of slide grooves 6 are provided on the convex ring part at the top of the base frame 1, and a plurality of trapezoidal blocks 9 are slidably connected in the plurality of slide grooves 6, and a plurality of slots 17 are provided on the upper surface of the trapezoidal block 9, and the clamping cover 3 is A plurality of first magnetic strips 12 are fixed to the circumferential outer wall by bolts, and two fixed blocks 13 are fixed to the circumferential inner wall of the clamping cover 3 by bolts. The outer side of the fixed block 13 is slidably connected with an insert plate 16 through a limiting groove 15, and the insert plate 16 is plugged into the slot 17. The top of the insert plate 16 is fixed with a second magnetic strip 14 by bolts, and the magnetic poles of the corresponding surfaces of the first magnetic strip 12 and the second magnetic strip 14 are opposite. At the same time, the pad 4 moves downward and pushes the trapezoidal block 9 to move outward until the bottom of the clamping cover 3 contacts the upper surface of the bottom disc part of the base frame 1. Under the repulsive force of the first magnetic strip 12 and the second magnetic strip 14, the insert plate 16 moves along the fixed block 13 and is inserted into the limiting groove 15 at the corresponding position, so that the position of the pad 4 is clamped and positioned.

[0025] In the present invention, it should be noted that the connecting assembly includes a plurality of threaded holes 8, which are opened on the circular ring at the bottom of the base frame 1. The outer walls of the multiple sides of the clamping cover 3 are welded with connecting blocks, and a connecting hole is opened in the connecting block. A plug-in frame 10 is inserted into the connecting hole. A screw rod 2 is rotatably connected to one side of the plug-in frame 10, and the screw rod 2 is threadedly connected to its corresponding threaded hole 8. The plug-in frame 10 is inserted into the connecting hole, and the screw rod 2 is rotated to insert it into the threaded hole 8 at the corresponding position, thereby fixing the base frame 1 and the clamping cover 3. The bottom circular ring part of the fixed base frame 1 is fixed with bolts. Multiple baffles 7 are provided, and the baffles 7 are in contact with the grooves at the bottom of the trapezoidal block 9. The baffles 7 can limit the distance that the trapezoidal block 9 moves, and prevent the trapezoidal block 9 from moving out of the base frame 1. A plurality of rolling grooves 20 are provided at the bottom of the trapezoidal block 9, and balls 19 are rotatably connected in the plurality of rolling grooves 20, and the balls 19 are in contact with the base frame 1. The balls 19 can make the trapezoidal block 9 move more smoothly along the base frame 1, and prevent the trapezoidal block 9 from getting stuck easily during the movement. A push handle 18 is fixed to the outer wall of one side of the trapezoidal block 9 by bolts, and the push handle 18 facilitates the staff to push and pull the trapezoidal block 9.

[0026] Working principle: When the sample needs to be positioned, first place the sample on the pad 4, and then insert the clamping cover 3 into the outer side of the convex ring on the top of the base frame 1, so that the clamping cover 3 squeezes the pad 4 to move downward, and the spring 11 contracts. At the same time, the pad 4 moves downward and pushes the trapezoidal block 9 to move outward until the bottom of the clamping cover 3 contacts the upper surface of the bottom disc part of the base frame 1. Under the repulsive force of the first magnetic strip 12 and the second magnetic strip 14, the insert plate 16 moves along the fixed block 13 and is inserted into the limit groove 15 at the corresponding position, so that the position of the pad 4 is clamped and positioned. Then the inserting frame 10 is inserted into the connecting hole, and the screw 2 is rotated to insert it into the threaded hole 8 at the corresponding position, thereby fixing the base frame 1 and the clamping cover 3.

[0027] Finally, it should be noted that those skilled in the art may modify the technical solutions described in the aforementioned embodiments or replace some of the technical features with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A sample clamping fixture with precise positioning, comprising a base frame (1) and a connecting assembly, characterized in that: The outer side of the convex ring portion of the base frame (1) is sleeved with a clamping cover (3), and a detachable fixing component is provided between the clamping cover (3) and the base frame (1). The bottom inner wall of the base frame (1) is fixedly connected with a plurality of springs (11), and the top of the spring (11) is fixedly connected with a limiting tube (5). The inner space of the convex ring portion of the base frame (1) is movably connected with a pad (4), and the pad (4) is fixed to the limiting tube (5). The convex ring portion at the top of the base frame (1) is provided with a plurality of slide grooves (6), and the plurality of slide grooves (6) are movably connected with trapezoidal blocks. (9), a plurality of slots (17) are provided on the upper surface of the trapezoidal block (9), a plurality of first magnetic strips (12) are fixedly connected to the circumferential outer wall of the clamping cover (3), two fixed blocks (13) are fixedly connected to the circumferential inner wall of the clamping cover (3), an insert plate (16) is movably connected to the outer side of the fixed block (13) through a limiting groove (15), and the insert plate (16) is plugged into the slots (17), a second magnetic strip (14) is fixedly connected to the top of the insert plate (16), and the magnetic poles of the corresponding surfaces of the first magnetic strip (12) and the second magnetic strip (14) are opposite.

2. A sample clamping tool with precise positioning according to claim 1, characterized in that: The connecting assembly comprises a plurality of threaded holes (8), the plurality of threaded holes (8) being provided on a circular ring at the bottom of the base frame (1), the outer walls of multiple sides of the clamping cover (3) being fixedly connected with a connecting block, a connecting hole being provided in the connecting block, a plug-in frame (10) being inserted into the connecting hole, a screw rod (2) being movably connected to one side of the plug-in frame (10), and the screw rod (2) being threadedly connected to its corresponding threaded hole (8).

3. The sample clamping fixture with precise positioning according to claim 1, characterized in that: A plurality of baffles (7) are fixedly connected to the bottom circular ring portion of the base frame (1).

4. The sample clamping fixture with precise positioning according to claim 3, characterized in that: The baffle (7) contacts the groove at the bottom of the trapezoidal block (9).

5. The sample clamping fixture with precise positioning according to claim 1, characterized in that: A plurality of rolling grooves (20) are provided at the bottom of the trapezoidal block (9).

6. The sample clamping fixture with precise positioning according to claim 5, characterized in that: The plurality of rolling grooves (20) are movably connected with rolling balls (19), and the rolling balls (19) are in contact with the base frame (1).

7. The sample clamping fixture with precise positioning according to claim 1, characterized in that: A push handle (18) is fixedly connected to an outer wall of one side of the trapezoidal block (9).

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