Press fitting device

Abstract

This utility model relates to a pressing device, which includes a pressing bracket, a pressing mechanism, a rotary positioning mechanism, and a feeding mechanism. The rotary positioning mechanism is located on one side of the pressing bracket and is used to place X-ray fluorescence analysis sample boxes and to rotate and position the X-ray fluorescence analysis sample boxes. The pressing mechanism includes a pressing cylinder and a pressing claw. The pressing cylinder is located on the pressing bracket, and the pressing claw is located on the telescopic rod of the pressing cylinder. The pressing mechanism is used to extend the pressing claw to press the X-ray fluorescence analysis sample box into a material-moving state, and to retract the pressing claw to place the sample box into the X-ray fluorescence analysis sample box after placing the sample box in the sample box, so that it is in a material-loading state. The feeding mechanism is located on the other side of the pressing bracket and is used to push the sample box on the conveyor belt into the X-ray fluorescence analysis sample box, and to push the sample box in the X-ray fluorescence analysis sample box onto the conveyor belt. The pressing device provided by this utility model can realize the automatic loading and unloading of X-ray fluorescence analysis sample boxes, saving manpower and improving the degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and more specifically, to a pressing device. Background Technology

[0002] In the field of X-ray fluorescence spectroscopy, sample pretreatment typically involves placing molten glass slides in a dedicated analytical sample container for analysis. Currently, the industry commonly uses a two-part analytical sample container, mainly composed of a base, a flexible clamping structure, and a top cover. Traditionally, the sample container assembly process requires removing the cover, placing the sample on the sample tray above the flexible clamping structure, and then closing the cover. The cover is usually screwed on or secured by a flexible component when rotated to a designated position. In automated testing lines, the success rate of automatic capping using robotic arms is low. If thread misalignment or failure to clamp causes the cover to spring open inside the equipment, it can directly lead to mechanical failure and potentially damage the equipment. To ensure successful fully automated X-ray fluorescence analysis of the sample, it is necessary to place the sample in a tray and position it in a suitable location. Figure 1 After being placed in the X-ray fluorescence analysis sample box as shown, the outer circumference of the X-ray fluorescence analysis sample box is then gripped by the claws of the transfer mechanism, and the X-ray fluorescence analysis sample box is moved into the X-ray fluorescence spectrometer.

[0003] like Figure 1 The X-ray fluorescence analysis sample box shown includes a cylindrical hollow main frame 01. The main frame includes a top plate 01a, a bottom plate 01b, and two symmetrically arranged support plates 01c connecting the top plate and the bottom plate. An elastic element 02 is provided on the bottom plate of the main frame, and a bearing plate 03 is connected to the top of the elastic element. Through two slots 01d opened on the top plate and the support plate, an external force can be applied to press the bearing plate downward. The tray box 04 containing the sample fused sheet can then be pushed laterally into the bearing plate inside the main frame. After the tray box is placed, the bearing plate is no longer pressed, and the bearing plate can press the tray box tightly against the top plate under the action of the elastic force of the elastic element.

[0004] In existing sample melting sheet detection lines, operators need to manually place the tray box into the X-ray fluorescence analysis sample box at the end of the conveyor line before sending it into the X-ray fluorescence spectrometer for detection. This process requires a lot of repetitive work from the operators and is quite labor-intensive. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a pressing device, which aims to solve the problems existing in the prior art.

[0006] This utility model provides a pressing device, which includes a pressing bracket, a pressing mechanism, a rotary positioning mechanism, and a feeding mechanism; wherein...

[0007] The rotation positioning mechanism is located on one side of the press-fit bracket and is used to place the X-ray fluorescence analysis sample box and to rotate and position the X-ray fluorescence analysis sample box.

[0008] The pressing mechanism includes a pressing cylinder and a pressing claw. The pressing cylinder is mounted on the pressing bracket, and the pressing claw is mounted on the telescopic rod of the pressing cylinder. The pressing mechanism is used to extend the pressing claw to press the X-ray fluorescence analysis sample box so that the X-ray fluorescence analysis sample box is in a material transfer state, and to retract the pressing claw after placing the tray box in the X-ray fluorescence analysis sample box so that the X-ray fluorescence analysis sample box is in a material loading state.

[0009] The feeding mechanism is located on the other side of the pressing bracket and is used to push the tray box on the conveyor belt into the X-ray fluorescence analysis sample box, and to push the tray box in the X-ray fluorescence analysis sample box onto the conveyor belt.

[0010] Preferably, the front end of the telescopic rod of the press-fit cylinder is provided with a press-fit claw fixing plate, and two press-fit claws are fixed on the press-fit claw fixing plate.

[0011] Preferably, a pressing cylinder mounting plate is vertically provided on one side of the upper end of the pressing bracket, and the pressing cylinder is fixedly connected to the pressing cylinder mounting plate.

[0012] Preferably, the pressing claw is equipped with a detection sensor for detecting the presence or absence of a tray box.

[0013] Preferably, the feeding mechanism includes a feeding mounting plate, a pushing cylinder, a pushing horizontal plate, an ejecting cylinder, and an ejecting horizontal plate; wherein,

[0014] The feeding mounting plate is horizontally fixed on the pressing bracket;

[0015] The pushing cylinder is fixed on the upper surface of the feeding mounting plate, and the front end of the telescopic rod of the pushing cylinder is provided with a pushing mounting plate. The pushing horizontal plate is horizontally fixed on the side of the pushing mounting plate facing the pushing cylinder.

[0016] The ejection cylinder is fixed to the lower surface of the feeding mounting plate, and the front end of the telescopic rod of the ejection cylinder is provided with an ejection mounting plate. The ejection cross plate is horizontally fixed to the side of the ejection mounting plate facing the ejection cylinder.

[0017] The push-in horizontal plate and the push-out horizontal plate are arranged opposite to each other, and the push-in horizontal plate and the push-out horizontal plate are located on the same plane.

[0018] Preferably, the pushing-in horizontal plate and the pushing-out horizontal plate are respectively provided with arc-shaped grooves that match the shape of the tray box at their opposite ends.

[0019] Preferably, the rotary positioning mechanism includes a rotary disk and a positioning cylinder;

[0020] The rotating disk is connected to a rotating disk drive motor, which drives the rotating disk to rotate. The sample cassette for X-ray fluorescence analysis is placed on top of the rotating disk.

[0021] The positioning cylinder is located on one side of the rotating disk. The extension rod of the positioning cylinder extends and blocks the support plate on the side of the X-ray fluorescence analysis sample box to achieve positioning of the X-ray fluorescence analysis sample box.

[0022] Preferably, the rotary positioning mechanism further includes a proximity switch, which is disposed on one side of the rotary disk and is set at a preset angle to the positioning cylinder in the circumferential direction. When the proximity switch detects the support plate of the X-ray fluorescence analysis sample box, the telescopic rod of the positioning cylinder extends.

[0023] Preferably, the positioning cylinder is mounted on a positioning cylinder mounting bracket, and the proximity switch is mounted on a proximity switch mounting bracket.

[0024] Preferably, the top of the rotating disk is provided with a placement slot for placing a sample box for X-ray fluorescence analysis, and the diameter of the placement slot matches the diameter of the sample box for X-ray fluorescence analysis.

[0025] The pressing device provided by this utility model can position the X-ray fluorescence analysis sample box through a rotary positioning mechanism, and then press the X-ray fluorescence analysis sample box through a pressing mechanism to put the X-ray fluorescence analysis sample box into a material transfer state. Then, the pallet box can be pushed from the conveyor belt into the X-ray fluorescence analysis sample box through the feeding mechanism, or the pallet box in the X-ray fluorescence analysis sample box can be pushed onto the conveyor belt, realizing the automatic loading and unloading of the X-ray fluorescence analysis sample box, saving manpower and improving the degree of automation. Attached Figure Description

[0026] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings.

[0027] Figure 1 A three-dimensional structural schematic diagram of a sample cassette for X-ray fluorescence analysis according to an embodiment of the present invention is shown.

[0028] Figure 2 and 3 These are three-dimensional structural schematic diagrams of the pressing device according to embodiments of the present invention, viewed from different directions.

[0029] In the diagram: 00, Sample box for X-ray fluorescence analysis; 01, Main frame; 01a, Top plate; 01b, Bottom plate; 01c, Support plate; 01d, Slot; 02, Elastic element; 03, Bearing plate; 04, Tray box; 1, Pressing bracket; 11, Pressing cylinder mounting plate; 2, Pressing mechanism; 21, Pressing cylinder; 22, Pressing claw; 221, Detection sensor; 23, Pressing claw fixing plate; 3, Rotary positioning mechanism; 31, Rotary disk; 32, Positioning cylinder; 33, Positioning cylinder mounting bracket; 34, Proximity switch; 35, Proximity switch mounting bracket; 4, Feeding mechanism; 41, Feeding mounting plate; 42, Push-in cylinder; 43, Push-out cylinder; 44, Push-in horizontal plate; 45, Push-out horizontal plate; 46, Push-in mounting plate; 47, Push-out mounting plate. Detailed Implementation

[0030] Various embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are indicated by the same or similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale.

[0031] This utility model provides a pressing device, see [link]. Figure 2 and Figure 3 The pressing device includes a pressing bracket 1, a pressing mechanism 2, a rotary positioning mechanism 3, and a feeding mechanism 4. The rotary positioning mechanism 3 is located on one side of the pressing bracket 1 and is used to place the X-ray fluorescence analysis sample box and to rotate and position it. The pressing mechanism 2 includes a pressing cylinder 21 and a pressing claw 22. The pressing cylinder 21 is located on the pressing bracket 1, and the pressing claw 22 is located on the telescopic rod of the pressing cylinder 21. The pressing mechanism 2 extends the pressing claw 22 to press the X-ray fluorescence analysis sample box, placing it in a material-transferring state, and retracts the pressing claw 22 after placing the tray box in the X-ray fluorescence analysis sample box, placing it in a material-loaded state. The feeding mechanism 4 is located on the other side of the pressing bracket 1 and is used to push the tray box on the conveyor belt into the X-ray fluorescence analysis sample box and to push the tray box in the X-ray fluorescence analysis sample box onto the conveyor belt.

[0032] Specifically, the structure of sample cartridge 00 for X-ray fluorescence analysis is as follows: Figure 1As shown, the X-ray fluorescence analysis sample box 00 includes a main frame 01, an elastic element 02, and a support plate 03. The main frame 01 includes a bottom plate 01b, a top plate 01a, and two support plates 01c. The bottom plate 01b and the top plate 01a are both circular structures. The two support plates 01c are symmetrically arranged on both sides of the bottom plate 01b and the top plate 01a in the radial direction, and the upper and lower ends of the two support plates 01c are connected to the top plate 01a and the bottom plate 01b, respectively. Two slots 01d are opened on the top plate 01a at positions corresponding to the two support plates 01c. The two slots 01d penetrate the top plate 01a and extend downwards by a predetermined distance on the two support plates 01c, respectively. The bottom of the elastic element 02 (specifically a tower-shaped spring) is set on the bottom plate 01b, and the support plate 03 is connected to the top of the elastic element 02. The top of the support plate 03 is used to place a tray box 04, and the elastic element 02 is used to abut the tray box 04 placed on the support plate 03 against the top plate 01a.

[0033] In practice, the clamping mechanism of the transfer device on the fused sheet detection line clamps the sample box for X-ray fluorescence analysis and places it on the rotary positioning mechanism 3. The rotary positioning mechanism 3 rotates and positions the sample box for X-ray fluorescence analysis so that the slot of the sample box for X-ray fluorescence analysis is aligned with the pressing claw 22 of the pressing mechanism 2. This allows the pressing claw 22 to enter the slot and press down on the support plate when the pressing cylinder 21 pushes the pressing claw 22 downward. When the pressing claw 22 presses down on the support plate of the X-ray fluorescence analysis sample box and moves it a certain distance downwards, it stops moving. At this time, the X-ray fluorescence analysis sample box is in the transfer state. If the X-ray fluorescence analysis sample box needs to unload the sample molten sheet that has been tested, the feeding mechanism 4 pushes the tray box containing the sample molten sheet placed above the support plate in the X-ray fluorescence analysis sample box onto the conveyor belt. If the X-ray fluorescence analysis sample box needs to load the sample molten sheet to be tested, the feeding mechanism 4 pushes the tray box containing the sample molten sheet to be tested on the conveyor belt laterally into the support plate of the X-ray fluorescence analysis sample box. When the pressing claw 22 retracts, the support plate in the X-ray fluorescence analysis sample box moves towards the top plate under the elastic force of the elastic element, and then the tray box placed above the support plate abuts against the top plate. At this time, the X-ray fluorescence analysis sample box is in the loading state, and the clamping mechanism of the transfer device can clamp the X-ray fluorescence analysis sample box and transfer it to the X-ray fluorescence spectrometer for detection.

[0034] The pressing bracket 1 is a vertically arranged plate-like structure with a forward-extending end at its upper end, giving it an overall inverted L-shaped structure. A pressing cylinder mounting plate 11 is vertically arranged on one side of the upper end of the pressing bracket 1, and a pressing cylinder 21 is fixedly connected to the pressing cylinder mounting plate 11. Specifically, after the pressing cylinder 21 is installed on the pressing cylinder mounting plate 11, it is positioned directly above the rotary positioning mechanism 3, enabling the pressing of the X-ray fluorescence analysis sample box placed on the rotary positioning mechanism 3. In a specific implementation, the bottom of the pressing bracket 1 is fixedly connected to the top of an aluminum profile bracket (not shown in the figure) on one side of the conveyor belt.

[0035] Furthermore, a pressing claw fixing plate 23 is provided at the front end of the telescopic rod of the pressing cylinder 21, and two pressing claws 22 are fixedly mounted on the pressing claw fixing plate 23. Specifically, the pressing claw fixing plate 23 is a rectangular plate structure, and the two pressing claws 22 can be vertically fixed to the pressing claw fixing plate 23 by welding. The pressing claw fixing plate 23 can be detachably connected to the end plate at the front end of the telescopic rod of the pressing cylinder 21 by screw connection.

[0036] Furthermore, the pressing claw 22 is equipped with a detection sensor 221 for detecting the presence or absence of a tray box. Specifically, the detection sensor 221 is a reflective photoelectric sensor, which uses the reflection of a light beam to trigger a signal to determine whether a tray box is placed above the support plate of the X-ray fluorescence analysis sample box. When the detection sensor 221 detects that the tray box is in place above the support plate of the X-ray fluorescence analysis sample box, it sends a command to the feeding mechanism 4, and the feeding mechanism 4 resets.

[0037] Further, the feeding mechanism 4 includes a feeding mounting plate 41, a pushing cylinder 42, a pushing horizontal plate 44, an ejecting cylinder 43, and an ejecting horizontal plate 45; wherein, the feeding mounting plate 41 is horizontally fixed on the pressing bracket 1; the pushing cylinder 42 is fixed on the upper surface of the feeding mounting plate 41, and the front end of the telescopic rod of the pushing cylinder 42 is provided with a pushing mounting plate 46, and the pushing horizontal plate 44 is horizontally fixed on the side of the pushing mounting plate 46 facing the pushing cylinder 42; the ejecting cylinder 43 is fixed on the lower surface of the feeding mounting plate 41, and the front end of the telescopic rod of the ejecting cylinder 43 is provided with an ejecting mounting plate 47, and the ejecting horizontal plate 45 is horizontally fixed on the side of the ejecting mounting plate 47 facing the ejecting cylinder 43; the pushing horizontal plate 44 and the ejecting horizontal plate 45 are arranged opposite to each other, and the pushing horizontal plate 44 and the ejecting horizontal plate 45 are located on the same plane.

[0038] Specifically, the feeding mounting plate 41 is a horizontally arranged steel plate, and one side of the feeding mounting plate 41 in the horizontal direction can be fixedly connected to the pressing bracket 1 by screws. The pushing cylinder 42 and the pushing cylinder 43 can be fixedly connected to the upper and lower surfaces of the feeding mounting plate 41 by screws respectively. The pushing mounting plate 46 and the pushing mounting plate 47 are respectively fixedly connected to the front end plate of the telescopic rod of the pushing cylinder 42 and the front end plate of the telescopic rod of the pushing cylinder 43 by screws. The pushing mounting plate 46 and the pushing mounting plate 47 extend towards the side of the rotary positioning mechanism 3. The pushing horizontal plate 44 is fixedly connected to the end of the pushing mounting plate 46 near the rotary positioning mechanism 3 by screws, and the pushing horizontal plate 45 is fixedly connected to the end of the pushing mounting plate 47 near the rotary positioning mechanism 3 by screws.

[0039] Furthermore, the opposite ends of the push-in horizontal plate 44 and the push-out horizontal plate 45 are respectively provided with arc-shaped grooves that match the shape of the pallet box. By providing arc-shaped grooves that match the shape of the pallet box at the front ends of the push-in horizontal plate 44 and the push-out horizontal plate 45, the pallet box will not slide laterally to the outside of the push-in horizontal plate 44 or the push-out horizontal plate 45 when the pallet box is pushed.

[0040] Furthermore, the rotary positioning mechanism 3 includes a rotary disk 31 and a positioning cylinder 32; the rotary disk 31 is connected to a rotary disk drive motor, which drives the rotary disk 31 to rotate, and the X-ray fluorescence analysis sample box is placed on the top of the rotary disk 31; the positioning cylinder 32 is disposed on one side of the rotary disk 31, and the extension rod of the positioning cylinder 32 extends out to block the support plate on the side of the X-ray fluorescence analysis sample box to achieve positioning of the X-ray fluorescence analysis sample box.

[0041] Specifically, the rotary positioning mechanism 3 is mounted on an aluminum profile bracket (not shown in the figure) on one side of the conveyor belt. The rotary disk 31 is positioned directly below the pressing mechanism 2. The body of the rotary disk drive motor (not shown in the figure) for driving the rotary disk 31 is mounted on the lower surface of the aluminum profile bracket. The rotary disk 31 is located above the aluminum profile bracket. The output shaft of the rotary disk drive motor extends through the aluminum profile bracket to the upper surface of the aluminum profile bracket, and the rotary disk 31 is fixedly connected to the output shaft of the rotary disk drive motor. The top of the rotary disk 31 is provided with a placement slot for placing the X-ray fluorescence analysis sample box. The placement slot is concentrically arranged with the rotary disk 31, and the diameter of the placement slot matches the diameter of the X-ray fluorescence analysis sample box. After the X-ray fluorescence analysis sample box is placed in the placement slot, when the support plate of the X-ray fluorescence analysis sample box is blocked by the telescopic rod of the positioning cylinder 32 to position the X-ray fluorescence analysis sample box, the X-ray fluorescence analysis sample box will not shift and will remain coaxial with the center of the rotary disk 31.

[0042] Furthermore, the rotary positioning mechanism 3 also includes a proximity switch 34, which is disposed on one side of the rotary disk 31, and the proximity switch 34 and the positioning cylinder 32 are set at a preset angle along the circumference. When the proximity switch 34 detects the support plate of the X-ray fluorescence analysis sample box, the telescopic rod of the positioning cylinder 32 extends.

[0043] Specifically, the positioning cylinder 32 is mounted on the positioning cylinder mounting bracket 33, and the proximity switch 34 is mounted on the proximity switch mounting bracket 35. Both the positioning cylinder mounting bracket 33 and the proximity switch mounting bracket 35 are L-shaped structures. The bottom of the positioning cylinder mounting bracket 33 and the proximity switch mounting bracket 35 are fixedly connected to the aluminum profile bracket on one side of the conveyor belt by screws. The positioning cylinder 32 and the proximity switch 34 are respectively fixedly connected to the vertical plates of the positioning cylinder mounting bracket 33 and the proximity switch mounting bracket 35. In specific implementation, when the rotating disk 31 drives the X-ray fluorescence analysis sample box to rotate, the proximity switch 34 detects the support column of the X-ray fluorescence analysis sample box and sends a signal to the positioning cylinder 32. The positioning cylinder 32 extends its telescopic rod. When the rotating disk drive motor receives the signal from the proximity switch 34, it delays for a preset time (determined according to the rotation speed of the rotating disk 31, ensuring that the support column on the other side of the proximity switch 34 can rotate past the position of the positioning cylinder 32 within the preset time) and then stops rotating. Within the preset time, the opposite support column of the X-ray fluorescence analysis sample box will definitely be blocked by the telescopic rod of the positioning cylinder 32. At this time, the X-ray fluorescence analysis sample box is positioned, and the pressing mechanism 2 can perform the pressing action on the X-ray fluorescence analysis sample box.

[0044] In summary, the pressing device provided by this utility model can position the X-ray fluorescence analysis sample box through a rotary positioning mechanism, and then press the X-ray fluorescence analysis sample box through a pressing mechanism to put the X-ray fluorescence analysis sample box into a material transfer state. Then, the feeding mechanism can push the tray box from the conveyor belt into the X-ray fluorescence analysis sample box, or push the tray box in the X-ray fluorescence analysis sample box onto the conveyor belt, realizing the automatic loading and unloading of the X-ray fluorescence analysis sample box, saving manpower and improving the degree of automation.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A pressing device, characterized in that, It includes a pressing bracket, a pressing mechanism, a rotary positioning mechanism, and a feeding mechanism; among which, The rotation positioning mechanism is located on one side of the press-fit bracket and is used to place the X-ray fluorescence analysis sample box and to rotate and position the X-ray fluorescence analysis sample box. The pressing mechanism includes a pressing cylinder and a pressing claw. The pressing cylinder is mounted on the pressing bracket, and the pressing claw is mounted on the telescopic rod of the pressing cylinder. The pressing mechanism is used to extend the pressing claw to press the X-ray fluorescence analysis sample box so that the X-ray fluorescence analysis sample box is in a material transfer state, and to retract the pressing claw after placing the tray box in the X-ray fluorescence analysis sample box so that the X-ray fluorescence analysis sample box is in a material loading state. The feeding mechanism is located on the other side of the pressing bracket and is used to push the tray box on the conveyor belt into the X-ray fluorescence analysis sample box, and to push the tray box in the X-ray fluorescence analysis sample box onto the conveyor belt.

2. The pressing device according to claim 1, characterized in that, The front end of the telescopic rod of the press-fit cylinder is provided with a press-fit claw fixing plate, and two press-fit claws are fixed on the press-fit claw fixing plate.

3. The pressing device according to claim 1, characterized in that, A pressing cylinder mounting plate is vertically provided on one side of the upper end of the pressing bracket, and the pressing cylinder is fixedly connected to the pressing cylinder mounting plate.

4. The pressing device according to claim 1, characterized in that, The pressing claw is equipped with a detection sensor for detecting the presence or absence of the tray box.

5. The pressing device according to claim 1, characterized in that, The feeding mechanism includes a feeding mounting plate, a pushing cylinder, a pushing horizontal plate, an ejection cylinder, and an ejection horizontal plate; wherein... The feeding mounting plate is horizontally fixed on the pressing bracket; The pushing cylinder is fixed on the upper surface of the feeding mounting plate, and the front end of the telescopic rod of the pushing cylinder is provided with a pushing mounting plate. The pushing horizontal plate is horizontally fixed on the side of the pushing mounting plate facing the pushing cylinder. The ejection cylinder is fixed to the lower surface of the feeding mounting plate, and the front end of the telescopic rod of the ejection cylinder is provided with an ejection mounting plate. The ejection cross plate is horizontally fixed to the side of the ejection mounting plate facing the ejection cylinder. The push-in horizontal plate and the push-out horizontal plate are arranged opposite to each other, and the push-in horizontal plate and the push-out horizontal plate are located on the same plane.

6. The pressing device according to claim 5, characterized in that, The pushing-in horizontal plate and the pushing-out horizontal plate are respectively provided with arc-shaped grooves at their opposite ends that match the shape of the tray box.

7. The pressing device according to claim 1, characterized in that, The rotary positioning mechanism includes a rotary disk and a positioning cylinder; The rotating disk is connected to a rotating disk drive motor, which drives the rotating disk to rotate. The sample cassette for X-ray fluorescence analysis is placed on top of the rotating disk. The positioning cylinder is located on one side of the rotating disk. The extension rod of the positioning cylinder extends and blocks the support plate on the side of the X-ray fluorescence analysis sample box to achieve positioning of the X-ray fluorescence analysis sample box.

8. The pressing device according to claim 7, characterized in that, The rotary positioning mechanism also includes a proximity switch, which is disposed on one side of the rotary disk and is set at a preset angle to the positioning cylinder along the circumference. When the proximity switch detects the support plate of the X-ray fluorescence analysis sample box, the telescopic rod of the positioning cylinder extends.

9. The pressing device according to claim 8, characterized in that, The positioning cylinder is mounted on the positioning cylinder mounting bracket, and the proximity switch is mounted on the proximity switch mounting bracket.

10. The pressing device according to claim 7, characterized in that, The top of the rotating disk is provided with a placement slot for placing a sample box for X-ray fluorescence analysis, and the diameter of the placement slot matches the diameter of the sample box for X-ray fluorescence analysis.

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