Sample inlaying mold assembly convenient for taking out sample

Abstract

The utility model provides a sample inlaying mould assembly convenient for taking out a sample, which belongs to the technical field of metal grinding and polishing appliances and comprises a sample inlaying mould and a sample separating mould, the sample inlaying mould is a cylinder, and the central area of the sample inlaying mould is provided with a first through hole penetrating through two ends; the first end face of the sample separation mold is used for bearing a sample and an insert formed outside the sample in a surrounding mode, a sample ejection piece is arranged in the first through hole in a penetrating mode and can be driven to linearly reciprocate in the axial direction of the sample ejection piece, and a second through hole is formed in the central area of the sample separation mold. The sample inlaying mold and the sample separating mold have a combined use state, in the combined use state, the second end face and the top side end face of the sample separating mold are attached up and down so that the first through hole and the second through hole can be in butt joint up and down, and the hole diameter of the second through hole is not smaller than that of a hole opening, located in the first end face, of the first through hole. According to the utility model, the sample and the insert can be conveniently separated, time and labor are saved, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of metal sample polishing tool design technology, specifically relating to a sample mounting mold assembly that facilitates sample removal. Background Technology

[0002] Mechanical grinding and metallographic polishing are fundamental operations in the microstructure analysis of metallic materials. Commonly used characterization techniques, such as optical microscopy, scanning electron microscopy, and electron backscattering diffraction, all require characterization on polished, mirror-like samples. Early mechanical grinding and polishing were primarily performed manually by laboratory personnel. However, in the last decade or so, thanks to advancements in mechanical automation, automatic grinding and polishing machines have emerged. These machines can prepare multiple samples at once, eliminating the need for manual labor and significantly improving experimental efficiency.

[0003] However, the emergence of automatic polishing machines has also brought new problems. Currently, the fixtures of general-purpose automatic polishing machines are designed for cylindrical samples with a diameter of 30 mm. Metallographic samples of metallic materials often cannot meet this size and shape requirement. A common solution to this problem is to use resin inserts embedded in a cylindrical mold, and then place it in the automatic polishing machine for polishing. Because resin is relatively soft, the debris that falls off during the polishing process along with the metal sample will not damage the surface quality of the sample.

[0004] However, while resin mounting solves the polishing problem, it often fails to meet the requirements for further sample preparation and characterization. For example, for electron backscatter diffraction analysis, mechanically polished samples require electrolytic polishing, but the physicochemical properties of the resin mounting material differ significantly from those of the metal sample, making electrolytic polishing impossible. Furthermore, during scanning electron microscopy, volatile substances such as resin are often not allowed in the sample chamber to protect the electron gun filament. In these cases, the mounted metal sample must be removed from the resin for further preparation and characterization. Current methods for removing the sample involve breaking the resin mounting material or sanding it off, both of which are time-consuming, labor-intensive, and inefficient, and can easily contaminate or damage the polished sample surface during the sampling process. Utility Model Content

[0005] Therefore, this utility model provides a sample mounting mold assembly that facilitates sample removal, which can overcome the technical problems in related technologies where the mounting material needs to be broken or sanded off when removing the sample after polishing after mounting, which is time-consuming, labor-intensive, and has low operating efficiency.

[0006] To address the aforementioned problems, this utility model provides a sample mounting mold assembly that facilitates sample removal. The assembly includes a sample mounting mold and a sample separation mold separately disposed from the sample mounting mold. The sample mounting mold is cylindrical, and a first through-hole is provided in the central region of the cylinder, penetrating its first and second end faces. The first end face is used to hold the sample and surround the insert formed outside the sample. A sample ejector is disposed within the first through-hole and can be driven to reciprocate linearly along its axial direction. A second through-hole is formed in the central region of the sample separation mold. The sample mounting mold and the sample separation mold are used in a combined configuration. In this combined configuration, the second end face and the top side end face of the sample separation mold are vertically aligned so that the first and second through-holes are vertically aligned. The diameter of the second through-hole is not less than the diameter of the opening of the first through-hole on the first end face.

[0007] In some embodiments, the first through hole includes a large-diameter section and a small-diameter section arranged sequentially along its axial direction, the large-diameter section being located on the side of the small-diameter section closer to the first end face, the sample ejector having a top plate within the large-diameter section and a push rod within the small-diameter section, the top plate having a portion that protrudes radially from the small-diameter section along the first through hole.

[0008] In some embodiments, the thickness of the top plate is less than the depth of the large-diameter section, and when the sample ejector is placed in the first through hole, a groove is formed between the top surface of the top plate and the first end face to accommodate the sample.

[0009] In some embodiments, when projected along the depth direction of the first through hole, the shape of the large-diameter section and the top plate are both rectangular, and the shape of the small-diameter section and the top rod are both circular.

[0010] In some embodiments, the top plate and the large-diameter section, as well as the small-diameter section and the top rod, are clearance-fitted, and the clearance between the top plate and the large-diameter section is smaller than the clearance between the small-diameter section and the top rod, and the clearance between the top plate and the large-diameter section is no greater than 0.1 mm.

[0011] In some embodiments, the second through hole is a circular hole with a diameter of D. When the shape of the large-diameter section is rectangular, the length of the diagonal of the rectangle is L, and D = (1.1~1.3)L.

[0012] In some embodiments, a flexible protective element is provided in the opening on the side of the second through hole away from the first through hole.

[0013] In some embodiments, the flexible protective element is a cotton felt.

[0014] In some embodiments, the outer edge of the end face of the sample separation mold near the first through hole is formed with an annular flange concentric with the second through hole, and the inner ring wall of the annular flange matches the shape of the outer edge of the second end face so that the second end face of the sample embedding mold is fitted into the annular flange.

[0015] In some embodiments, the diameter of the cylinder is 30 mm.

[0016] The sample mounting mold assembly provided by this utility model, which facilitates sample removal, has the following beneficial effects:

[0017] The sample mounting mold in the assembly is equipped with a sample ejector that can apply axial force to the end face of the sample. The sample separation mold can cooperate with the first end face of the sample mounting mold. In the combined use state, the sample on the sample mounting mold can move along the depth direction of the second through hole under the force of the sample ejector, while the insert remains stationary due to the obstruction of the sample separation mold. This achieves convenient separation of the sample and the insert after sample mounting and polishing, eliminating the need to break the insert or use sandpaper to separate the insert as in the prior art. This saves time and effort and improves operating efficiency. In addition, the mold assembly in this utility model has a simple structure, low manufacturing cost, and convenient operation. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a top view of the sample mounting mold in the sample mounting mold assembly for easy sample removal in this embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle;

[0021] Figure 3 This is a top view of the sample separation mold in the sample embedding mold assembly for easy sample removal in this embodiment of the present invention;

[0022] Figure 4 yes Figure 3 Cross-sectional schematic diagram of BB;

[0023] Figure 5 yes Figure 1The diagram shows the state of the sample mounting mold after it has secured the sample and mounted the insert around the sample. The top plate in the diagram is supported on the bottom side end face of the sample, and the insert is formed on the first end face.

[0024] Figure 6 This is a schematic diagram of the sample embedding mold and sample separation mold in the sample embedding mold assembly of this utility model in a combined use state. In the figure, the sample is ejected by the sample ejector and separated from the insert.

[0025] The attached figures are labeled as follows:

[0026] 1. Sample inlay mold; 11. Groove; 2. Sample ejector; 21. Top plate; 22. Ejector rod; 3. Sample separation mold; 31. Second through hole; 100. Sample; 200. Insert. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0031] See also Figures 1 to 6 As shown, according to an embodiment of the present invention, a sample mounting mold assembly for easy sample removal is provided, including a sample mounting mold 1 and a sample separation mold 3 separately disposed from the sample mounting mold 1. The aforementioned separate disposal means that the two can be assembled as one unit or separated into two relatively independent components. The sample mounting mold 1 is a cylinder, and a first through hole (not indicated in the figure) is provided in the central region of the cylinder, penetrating its first end face and second end face. The first end face is used to hold the sample 100 and the insert 200 formed around the sample 100. See [reference needed]. Figure 5 As shown, in specific use, the outer circumferential wall of the insert 200 is flush with the outer cylindrical surface of the sample insert mold 1, so as to facilitate reliable clamping of the sample insert mold 1 by the automatic polishing machine. A sample ejector 2 is disposed in the first through hole, and the sample ejector 2 can be driven to reciprocate linearly along its axial direction, that is, it can be driven to slide along the axial direction of the first through hole. A second through hole 31 is formed in the central region of the sample separation mold 3. The sample insert mold 1 and the sample separation mold 3 can be used in combination. The aforementioned combined use state is, for example... Figure 6As shown, the sample mounting mold 1 is inverted on the top surface of the sample separation mold 3. In the combined use state, the second end face is vertically abutted against the top side end face of the sample separation mold 3 so that the first through hole and the second through hole 31 are vertically aligned. The diameter of the second through hole 31 is not less than the diameter of the opening of the first through hole on the first end face. It is understood that when the sample mounting mold 1 is used to mount the sample 100, the sample 100 should be placed within the coverage area of ​​the opening of the first through hole on the first end face, while the mounting material 200 should be at least partially outside the coverage area of ​​the opening of the first through hole on the first end face, that is, outside the outer region of the edge of the opening. At this time, in the combined use state, force is applied to the top of the sample ejector 2 to move it from top to bottom along the axial direction of the first through hole. The sample ejector 2 will apply force to the top surface of the sample 100 (to... Figure 6 (The orientation shown is for reference only), while the insert 200 surrounding the sample 100 is obstructed by the top side face of the sample separation mold 3, thus achieving easy separation of the sample 100 and the insert 200. The aforementioned sample 100 is generally a sample made of metal material, and the aforementioned insert 200 can be, for example, a suitable material such as resin or charcoal powder, which can be reasonably selected according to actual needs.

[0032] In this technical solution, the sample mounting mold 1 in the component is equipped with a sample ejector 2 that can apply axial force to the end face of the sample 100. The sample separation mold 3 can cooperate with the first end face of the sample mounting mold 1. In the combined use state, the sample 100 on the sample mounting mold 1 can move along the depth direction of the second through hole under the force of the sample ejector 2, while the insert 200 remains stationary due to the obstruction of the sample separation mold 3. This achieves convenient separation of the sample 100 and the insert 200 after sample mounting and polishing. It eliminates the need to break the insert or use sandpaper to polish the insert in the prior art, saving time and effort and improving operating efficiency. In addition, the mold component in this utility model has a simple structure, low manufacturing cost, and convenient operation.

[0033] It is understood that the sample mounting mold 1 and the sample separation mold 3 also have a mounting and polishing state. In the mounting and polishing state, the sample 100 and the insert 200 are formed on the first end face of the sample mounting mold 1, and the first end face faces upward so that the automatic polishing machine can polish the exposed end face of the sample 100. The sample separation mold 3 is in an independent placement state. That is, in this state, there is no connection (combination) between the sample separation mold 3 and the sample mounting mold 1. In this state, in some embodiments, the sample ejector 2 has a part protruding from the second end face so that the operator can apply force to the protruding part of the sample ejector 2. That is, the displacement drive of the sample ejector 2 can be achieved by manually applying force.

[0034] In some embodiments, the first through hole includes a large-diameter section arranged sequentially along its axial direction (i.e., Figure 2 The upper section shown in the orientation) and the small-diameter section (i.e. Figure 2 (The lower section shown in the orientation) The large-diameter section is located on the side of the small-diameter section near the first end face. The sample ejector 2 has a top plate 21 in the large-diameter section and a push rod 22 in the small-diameter section. The top plate 21 has a portion that protrudes radially from the small-diameter section along the first through hole.

[0035] In this technical solution, the first through hole is designed with a structure that is larger at the top and smaller at the bottom. At the same time, the sample ejector 2 also forms a structure that is larger at the top and smaller at the bottom. This can ensure the positional stability of the sample ejector 2 when the sample embedding mold 1 is in the embedding and polishing state. There is no need to design a fixing structure for the relative position of the sample ejector 2 and the sample embedding mold 1 separately, which further simplifies the component structure design.

[0036] See further Figure 2 As shown, in some embodiments, the thickness of the top plate 21 is less than the depth of the large-diameter section, and when the sample ejector 2 is placed in the first through hole, a groove 11 is formed between the top surface of the top plate 21 and the first end face to accommodate the sample 100.

[0037] In this technical solution, when the sample mounting mold 1 is in the mounting and polishing state, a groove 11 is formed on the top surface of the top plate 21 to accommodate the bottom part of the sample 100, thereby enabling the positioning of the relative position of the sample 100 and the sample mounting mold 1, and thus ensuring the positional reliability of the sample 100 during the polishing process.

[0038] In some embodiments, when projected along the depth direction of the first through hole, the shape of the large-diameter section and the top plate 21 is rectangular, and the shape of the small-diameter section and the top rod 22 is circular.

[0039] In this technical solution, the shape of the large-diameter section and the top plate 21 are both designed as rectangles to match the usual shape of the sample 100, making the structure more compact and allowing the rectangle to be used to limit the circumferential position of the sample 100.

[0040] In some embodiments, the top plate 21 and the large-diameter section, as well as the small-diameter section and the push rod 22, are all clearance-fitted. The clearance between the top plate 21 and the large-diameter section is smaller than the clearance between the small-diameter section and the push rod 22. The clearance between the top plate 21 and the large-diameter section is no greater than 0.1 mm. This ensures smooth sliding of the sample ejector 2 while minimizing the clearance between the top plate 21 and the large-diameter section, thereby reducing the amount of inlay material that seeps into the clearance between the top plate 21 and the large-diameter section when inlaying the inlay material 200.

[0041] In some embodiments, the second through hole 31 is a circular hole with a diameter of D. When the shape of the large-diameter section is rectangular, the diagonal length of the rectangle is L, and D = (1.1~1.3)L, to ensure that the diameter of the second through hole 31 is within a suitable range, preventing incomplete separation of the insert 200 from the sample 100 if it is too large, and interference with the sample 100 and hindering the extraction and separation of the sample 100 if it is too small. In a specific embodiment, D = 1.2L.

[0042] In order to prevent the sample 100 from falling directly after separation and potentially damaging the polished surface, in some embodiments, a flexible protective element is provided in the opening of the second through hole 31 on the side away from the first through hole. The aforementioned flexible protective element can be, for example, cotton felt. Specifically, the aforementioned flexible protective element can be tensioned in the bottom opening of the second through hole 31. Of course, in some embodiments, the flexible protective element can also be independently pressed under the bottom end face of the sample separation mold 3, that is, the sample separation mold 3 is placed on the flexible protective element.

[0043] In some embodiments, the outer edge of the sample separation mold 3 near the end face of the first through hole (i.e., the top side end face of the sample separation mold 3) is formed with an annular flange (not shown in the figure) concentric with the second through hole 31. The inner ring wall of the annular flange matches the shape of the outer edge of the second end face so that the second end face of the sample embedding mold 1 is fitted into the annular flange, thereby ensuring that the first through hole of the sample embedding mold 1 and the second through hole of the sample separation mold 3 are coaxially aligned, thereby ensuring the smooth separation of the sample 100.

[0044] In order to make the sample embedding mold 1 of this utility model compatible with the clamping size of the clamping components of conventional automatic grinding and polishing machines, the diameter of the cylinder is 30mm and the height can be designed to be 15mm. Generally speaking, the sample separation mold 3 is also a cylinder, and its diameter and height can be consistent with those of the sample embedding mold 1.

[0045] In other embodiments, the top plate 21 and the top rod 22 are an integral structure.

[0046] In use, first place the sample 100 in the groove 11 of the sample mounting mold 1, then use the insert 200 to mount the sample 100, filling the part of the sample 100 that protrudes from the first end face of the sample mounting mold 1, then place it in an automatic polishing machine for polishing, then place the sample mounting mold 1 with the polished sample upside down on the sample separation mold 3, push the sample ejector 2 toward the side closer to the sample separation mold 3 to eject the sample 100 into the second through hole 31 of the sample separation mold 3, and finally use sandpaper to polish away the remaining insert.

[0047] The following are two examples of using the sample embedding mold assembly of this utility model to separate polished samples.

[0048] Example 1

[0049] The nominal composition of 6111 aluminum alloy is Al-0.8Mg-0.9Si-0.7Cu. This alloy has excellent formability and good strength, and is a commonly used material for automotive sheet metal. A sample of 6111 aluminum alloy sheet was taken, with a length of 9 mm, a width of 7 mm, and a thickness of 5 mm. The sample was placed in groove 11, approximately 3 mm above the upper mold plane. Resin inserts were prepared into a paste and inserted into the raised parts of the sample at room temperature, filling the raised parts. The sample was then placed in an automatic polishing machine to obtain a smooth and bright mirror surface. The upper mold (i.e., the aforementioned sample insert mold 1, hereinafter the same) was then placed upside down on top of the lower mold (i.e., the aforementioned sample separation mold 3, hereinafter the same). The ejector rod (i.e., the aforementioned sample ejector 2, hereinafter the same) was actuated, and the sample was successfully ejected. Only a small amount of resin adhered to the edges, and the polished surface of the sample was good, without contamination or damage.

[0050] Example 2

[0051] The sample material and dimensions used were the same as in Example 1. The difference was that charcoal powder was used as the inlay material, and the sample was heat-mounted at approximately 150 degrees Celsius, resulting in a harder and denser inlay effect than in Example 1. The upper mold with the inlaid sample was placed in an automatic polishing machine for polishing to obtain a smooth and bright mirror surface. Then, the upper mold with the inlaid sample was placed upside down on top of the lower mold to push the sample down. Because the heat-mounted sample was relatively hard, the push rod was not easy to push by hand. A screwdriver and a small wooden hammer were used to tap the push rod, and the sample was successfully pushed down. Only a small amount of inlay material adhered to the edges, and the polished surface of the sample was good, without contamination or damage.

[0052] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A sample mounting mold assembly for easy sample removal, characterized in that, The sample includes a sample mounting mold (1) and a sample separation mold (3) separately disposed from the sample mounting mold (1). The sample mounting mold (1) is a cylinder, and a first through hole is provided in the central region of the cylinder, which passes through its first end face and second end face. The first end face is used to carry the sample (100) and the insert (200) formed around the sample (100). A sample ejector (2) is disposed in the first through hole. The sample ejector (2) can be driven to move linearly back and forth along its axial direction. A second through hole (31) is formed in the central region of the sample separation mold (3). The sample mounting mold (1) and the sample separation mold (3) are used in combination. In the combined use state, the second end face and the top side end face of the sample separation mold (3) are fitted together so that the first through hole and the second through hole (31) are connected vertically. The diameter of the second through hole (31) is not less than the diameter of the opening of the first through hole on the first end face.

2. The sample mounting mold assembly according to claim 1, characterized in that, The first through hole includes a large-diameter section and a small-diameter section arranged sequentially along its axial direction. The large-diameter section is located on the side of the small-diameter section close to the first end face. The sample ejector (2) has a top plate (21) located in the large-diameter section and a push rod (22) located in the small-diameter section. The top plate (21) has a portion that protrudes radially from the small-diameter section along the first through hole.

3. The sample mounting mold assembly according to claim 2, characterized in that, The thickness of the top plate (21) is less than the depth of the large-diameter section. When the sample ejector (2) is placed in the first through hole, a groove (11) is formed between the top surface of the top plate (21) and the first end face to accommodate the sample (100).

4. The sample mounting mold assembly according to claim 2, characterized in that, Projecting along the depth direction of the first through hole, the shape of the large-diameter section and the top plate (21) are both rectangular, while the shape of the small-diameter section and the top rod (22) are both circular.

5. The sample mounting mold assembly according to claim 2, characterized in that, The top plate (21) and the large-diameter section, as well as the small-diameter section and the top rod (22), are all clearance fits. The clearance between the top plate (21) and the large-diameter section is smaller than the clearance between the small-diameter section and the top rod (22). The clearance between the top plate (21) and the large-diameter section is no greater than 0.1 mm.

6. The sample mounting mold assembly according to claim 2, characterized in that, The second through hole (31) is a circular hole with a diameter of D. When the shape of the large-diameter section is rectangular, the length of the diagonal of the rectangle is L, and D = (1.1~1.3)L.

7. The sample mounting mold assembly according to claim 1, characterized in that, A flexible protective element is provided in the opening of the second through hole (31) on the side away from the first through hole.

8. The sample mounting mold assembly according to claim 7, characterized in that, The flexible protective component is cotton felt.

9. The sample mounting mold assembly according to claim 1, characterized in that, The sample separation mold (3) has an annular flange concentric with the second through hole (31) formed on the outer edge of the end face near the first through hole. The inner ring wall of the annular flange matches the shape of the outer edge of the second end face so that the second end face of the sample embedding mold (1) is embedded in the annular flange.

10. The sample mounting mold assembly according to claim 1, characterized in that, The diameter of the cylinder is 30 mm.

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