Filling mold and system for emission spectrum electrode

Abstract

The invention provides a filling mold and system for an emission spectrum electrode, and the mold comprises an upper mold which is provided with a plurality of pressing rod middle molds and a plurality of pressing channels, and each pressing channel is used for allowing a powder sample to pass through; the lower die is provided with a plurality of mounting holes, and each mounting hole is used for assembling a graphite electrode; wherein the pressing rods, the pressing channels and the mounting holes are in one-to-one correspondence in position, and one side, facing the mounting holes, of each pressing channel is blocked by the corresponding graphite electrode; a powder sample is piled and filled into the groove of the graphite electrode in each corresponding mounting hole through each pressing channel, each pressing rod penetrates through each corresponding pressing channel to extrude the powder sample, and the pressing channels limit the powder sample from leaking out of the groove so as to compact the powder sample in the groove of the graphite electrode. By means of the mold, the problems that an existing filling device is complex in structure, high in cost, poor in flexibility, limited in filling number and poor in filling uniformity are solved.

Description

Technical Field

[0001] The present application relates to the technical field of emission spectroscopy analysis, and particularly to a loading mold and system for an emission spectroscopy electrode. Background Art

[0002] During the emission spectroscopy analysis process, it is necessary to fill powder samples into graphite electrodes. The traditional operation method mainly relies on manual filling of powder samples, but manual filling of powder samples is time-consuming and laborious, and the filling efficiency is low. In order to solve the many drawbacks existing in manual filling of powder, a device for automatically mixing and filling powder samples into the cavities of graphite electrodes has been proposed. When in use, a plurality of graphite electrodes containing powder are placed on a placing plate and moved through a transmission mechanism (transmission table, transmission roller, transmission belt). During the filling process, the motor drives the transmission mechanism to operate, and the powder is filled into the filling mechanism. When the electrode carrier moves below the filling mechanism, the electric push rod is activated to drive the clamping plate to fix the electrode carrier to ensure the stability of the filling process. Subsequently, the compaction mechanism compacts the filled powder to achieve an assembly line operation and improve the filling efficiency.

[0003] However, the composition structure of this device is complex and the structure is fixed, the input maintenance cost is high, the number of powder samples filled at one time is limited, and it cannot flexibly match graphite electrodes with inconsistent specifications and quantities; at the same time, the powder is easily affected by vibration before and after filling, resulting in the powder in the cavities of the graphite electrodes being disturbed and overflowing, and the filling uniformity is poor. Summary of the Invention

[0004] Aiming at the above problems, one of the purposes of the present invention is to provide a loading mold for an emission spectroscopy electrode to solve the problems of complex structure, high cost, poor flexibility, limited filling quantity, and poor filling uniformity of the existing filling device. The second purpose of the present invention is to provide a loading system for an emission spectroscopy electrode to achieve uniform filling of sample powder in multiple batches and large quantities.

[0005] To achieve the first purpose, in the first aspect, the present invention provides a loading mold for an emission spectroscopy electrode, and the technical solution adopted is: A loading mold for an emission spectroscopy electrode, the mold comprising: An upper mold provided with a plurality of pressure rods; A middle mold provided with a plurality of pressing channels, each of the pressing channels being used to allow the powder sample to pass through; A lower mold provided with a plurality of mounting holes, each of the mounting holes being used to assemble a graphite electrode; Wherein, the positions of each of the pressure rods, each of the pressing channels and each of the mounting holes correspond to each other one by one, and one side of each of the pressing channels facing the mounting hole is blocked by the corresponding graphite electrode; The powder sample is stacked into the groove of the graphite electrode in each corresponding mounting hole through each pressing channel. Each pressing rod passes through each corresponding pressing channel to squeeze the powder sample. The pressing channel restricts the powder sample from leaking out of the groove so as to compact the powder sample in the groove of the graphite electrode.

[0006] As one of the preferred solutions, each of the pressing channels includes: a sample loading hole, opposite to the position of each of the pressure rods; a compacting hole, connected to the sample addition hole; A plugging hole is connected to the compacting hole, and the shape and size of the plugging hole are adapted to the shape and size of the graphite electrode; Wherein, at least a portion of each of the graphite electrodes extends out of the mounting hole, and the extended portion of the graphite electrode is embedded in the blocking hole.

[0007] As one of the preferred solutions, the inner diameter of the sample addition hole gradually decreases in the direction approaching the compaction hole.

[0008] As one of the preferred solutions, the lower mold further includes a plurality of anti-blocking holes, each of which is connected to the bottom of each of the mounting holes.

[0009] As one of the preferred solutions, the upper mold includes: The fixing plate is provided with a plurality of through holes, each of which is provided with a pressing head of each pressing rod, and the rod body of the pressing rod extends out of the through hole; wherein the shape and size of the rod body are adapted to the shape and size of the compacting hole; A backing plate is covered and fixed on a side of the fixing plate facing away from the shaft.

[0010] As one of the preferred solutions, at least one guide sleeve is provided on the lower die, and at least one guide post is provided on the middle die, and each guide sleeve is positioned opposite to each guide post.

[0011] As one of the preferred solutions, handles are respectively provided on opposite sides of the upper mold, the middle mold and the lower mold.

[0012] To achieve the second objective, in a second aspect, the present invention provides a filling system for an emission spectroscopy electrode, which adopts the following technical solution: A filling system for an emission spectrum electrode, the system comprising the filling mold for an emission spectrum electrode provided by the first aspect of the present invention, wherein the upper mold, the middle mold and the lower mold of the mold are arranged in sequence; the system also comprises a body, and; A power output mechanism is connected to the upper mold of the mold and is used to apply the same or different pressures to the molds of different batches; the power output mechanism includes: A driving electric cylinder, located in the body, for outputting electric power and converting the electric power into linear reciprocating motion of the power shaft; The base is located outside the machine body, is connected to the power shaft of the driving electric cylinder, and is connected to the upper mold, and is used to drive the upper mold to approach or move away from the middle mold.

[0013] As one of the preferred solutions, the system further includes: A carrier, arranged below the body corresponding to the base, and the mold is placed on the carrier; Wherein, a plurality of universal balls are provided on the carrier, guide rails are provided on opposite sides of the carrier, and the plurality of universal balls are located between two guide rails; The bottom of the lower die is in sliding contact with the universal ball, and the opposite sides of the lower die are in movably contact with the two guide rails.

[0014] As one of the preferred solutions, the carrier is provided with a button, and the body is provided with a display screen; the button and the display screen are both electrically connected to the driving electric cylinder.

[0015] Compared with the prior art, this application has the following advantages: The mold provided by the embodiment of the present application is characterized in that the bottom of the hole of the pressing channel is aligned with the mounting hole, the mounting hole is filled with the graphite electrode, and the groove end of the graphite electrode blocks the bottom of the hole of the pressing channel. During the compaction process, the pressing pipe guides the powder to fall directionally into the groove to form a filling area. Therefore, when extruding in the filling area, the surrounding area is a closed extrusion environment. Due to the shape and size restrictions of the pressing channel, the powder is limited to being squeezed in the electrode groove and will not leak out. Since the powder enters directly from the top of the hole of the pressing channel and is in the filling area, the powder is pressed by the pressure rod after filling, so the powder after filling will not be affected by vibration and fall into other areas. When the powder is fully compacted, the pressure rod of the upper mold returns to the initial position, and then the middle mold and the lower mold are disassembled, and the filled graphite electrode can be taken out for subsequent analysis.

[0016] This mold prevents powder from leaking out during the filling process and also prevents leakage from squeezing during compaction, improving filling uniformity. This overcomes the problems of powder spillage, uneven filling, and poor adaptability found in traditional automatic filling devices, improving equipment applicability, cost-effectiveness, and filling uniformity, providing an efficient, stable, and repeatable filling solution for emission spectroscopy analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the present application, the accompanying drawings required for the description of the present application will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a composition structure diagram of a loading mold for an emission spectrum electrode provided by an embodiment of the present application; Figure 2 It is an overall structure diagram of an upper mold provided by an embodiment of the present application; Figure 3 It is a top view of a fixing plate provided by an embodiment of the present application; Figure 4 [[ID=1३]]It is a cross-sectional view of a fixing plate provided by an embodiment of the present application; Figure 5 It is a front view of a pressure rod provided by an embodiment of the present application; Figure 6 It is a top view of a middle mold provided by an embodiment of the present application; Figure 7 It is a cross-sectional view of a middle mold provided by an embodiment of the present application; Figure 8 It is a top view of a lower mold provided by an embodiment of the present application; Figure 9 It is a cross-sectional view of a lower mold provided by an embodiment of the present application; Figure 10 It is an overall structure diagram of a loading system for an emission spectrum electrode provided by an embodiment of the present application.

[0019] Explanation of reference numerals: 1. Upper mold; 101. Fixing plate; 1011. Through hole; 102. Cushion plate; 103. Pressure rod; 1031. Pressure head; 1032. Rod body; 2. Middle mold; 201. Pressing channel; 2011. Sampling hole; 2012. Compacting hole; 2013. Sealing hole; 3. Lower mold; 301. Mounting hole; 4. Graphite electrode; 5. Guide post; 6. Guide sleeve; 7. Handle; 8. Electric cylinder; 9. Power shaft; 10. Base; 11. Carrier table; 12. Universal ball; 13. Guide rail; 14. C-shaped combined frame; 15. Cabinet; 16. Display screen; 17. Electric cylinder controller; 18. Start button; 19. Emergency stop button. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0021] It should be explained that the current mainstream method for manually loading powder samples into the graphite electrode 4. The graphite electrode 4 usually adopts a bowl-shaped electrode or a groove-shaped electrode. For example, it has a diameter of 6 mm, a height of 45 mm, and a cylindrical groove with a diameter of 4 mm and a depth of 5 mm at the top. During the loading process, the sample is manually loaded into the groove at the top of the electrode, and it is required to be filled and compacted evenly. After compaction, two drops of sucrose solution are dripped, and then the sample is dried to make the sample stick together. There are many drawbacks to this manual filling method: First of all, the manual filling speed is extremely slow. The operator needs to carefully fill the powder into the graphite electrode 4 little by little, which takes a long time. Especially when facing a large number of samples to be analyzed, it seriously affects the work efficiency. Secondly, it is very difficult to ensure the uniformity of the powder sample in the graphite electrode 4 by manual filling. Since the operation methods of the operators are difficult to be completely consistent, local accumulation or sample spilling is likely to occur during the filling process, resulting in inconsistent filling of the powder sample in different electrodes. And inconsistent sample filling will have a negative impact on the measurement results of the emission spectrum, reducing the accuracy and reliability of the measurement. According to statistics, a worker can only complete the filling of 200 samples in a day. Since the filled electrodes still need to be dried, the overall efficiency is very low.

[0022] Although there are currently some methods for automatically loading powder samples into the graphite electrode 4, such as the device for automatically loading sample powder mentioned in the background technology, there are also the following several disadvantages: After the powder is unloaded, it is transmitted to the compaction mechanism by the transmission mechanism without being compacted first. The powder leaks out of the electrode groove under the influence of mechanical vibration. Therefore, the filling density is not uniform during the subsequent formal compaction. During the formal compaction process, since there is no closed compaction environment, when the compaction rod presses down, the powder continues to be extruded from the edge of the groove. Therefore, it is impossible to ensure that the powder after unloading can be completely filled into the electrode interior, which in turn causes the powder filling density of multiple graphite electrodes 4 to be different again. After being compacted by the compaction mechanism, the powder continues to be transmitted to the picking position by the transmission mechanism, and it is easy to be affected by vibration again, resulting in local collapse / looseness of the compacted powder. Therefore, the existing device ultimately leads to non-uniform powder loading density before, during, and after compaction, which in turn affects the accuracy of the spectral analysis results.

[0023] Meanwhile, the compaction mechanism, loading mechanism, and graphite electrode 4 of the device are coupled to each other. The compaction mechanism is fixed on the transfer table, and the carrier of the graphite electrode 4 moves on the transfer table. The compaction mechanism can only match electrodes of specific specifications and quantities. Once the sample quantity or electrode specification changes, it cannot be flexibly adjusted unless the entire mechanical structure is modified or the entire device is directly replaced, resulting in high operation complexity. Therefore, it cannot meet the loading requirements of graphite electrodes 4 of different specifications and quantities, limiting the applicability of the device.

[0024] Then, due to the limitations of the transfer table and other components such as the loading mechanism, the loading quantity of the device is limited, making it difficult to meet the large-scale requirements of different batches. Moreover, the compaction mechanism can only rely on electric drive. Once power is cut off, the only option is the manual powder sample loading method mentioned above.

[0025] Finally, the powder leaking during the loading process will disperse and adhere to the surfaces of the device, conveyor belt, compaction mechanism, etc., affecting the normal operation of the device and requiring frequent cleaning.

[0026] In view of this, referring to Figure 1 as shown, Figure 1 is the overall structural composition diagram of the loading mold for emission spectral electrodes shown in the present invention. As Figure 1 shown, the present invention provides a loading mold for emission spectral electrodes. The mold includes: an upper mold 1 provided with a plurality of pressure rods 103; a middle mold 2 provided with a plurality of pressing channels 201, each of the pressing channels 201 being used to allow the powder sample to pass through; a lower mold 3 provided with a plurality of mounting holes 301, each of the mounting holes 301 being used to assemble the graphite electrode 4; wherein, the positions of each of the pressure rods 103, each of the pressing channels 201, and each of the mounting holes 301 correspond one by one, and one side of each of the pressing channels 201 facing the mounting hole 301 is blocked by the corresponding graphite electrode 4; the powder sample is filled into the grooves of the graphite electrode 4 in each of the corresponding mounting holes 301 through each of the pressing channels 201, and each of the pressure rods 103 penetrates through the corresponding pressing channel 201 to extrude the powder sample, and the pressing channel 201 restricts the powder sample from leaking out of the groove to compact the powder sample in the groove of the graphite electrode 4.

[0027] In this embodiment, the mold is composed of three parts: an upper mold 1, a middle mold 2, and a lower mold 3, and the precise loading and compaction of the powder sample are realized through the pressure rods 103, pressing channels 201, and mounting holes 301 provided on each mold. For the convenience of understanding, based on the use state of the present invention, the upper mold 1, middle mold 2, and lower mold 3 are arranged in sequence from top to bottom. Therefore, directly below the pressure rod 103 is the pressing channel 201, directly below the pressing channel 201 is the mounting hole 301, and the pressure rod 103 extends downward into the pressing channel 201.

[0028] Specifically, as Figure 5 shown in the front view of the pressing rod 103. A plurality of pressing rods 103 are mainly used to compact the powder sample so as to form a uniform and dense filling layer in the groove of the graphite electrode 4. The pressing rod 103 is refined from high-strength alloy materials and has excellent compressive resistance and wear resistance. Among them, the size of the pressing rod 103 can be designed according to the size of the groove of the graphite electrode 4, ensuring uniform and dense filling of each sample in the electrode, thus ensuring the consistency of experimental conditions and effectively avoiding interference of external factors on the experimental results.

[0029] As Figure 6 and Figure 7 shown respectively in the top view and cross-sectional view of the middle mold 2. The pressing channel 201 is a through hole penetrating from top to bottom, and the bottom of the through hole is aligned with the mounting hole 301 of the lower mold 3 and is also aligned with the graphite electrode 4 in the mounting hole 301 at the same time. The top of the through hole is aligned with the pressing rod 103 of the upper mold 1. The graphite electrode 4 is pre-fixed in the mounting hole 301 of the lower mold 3, and the groove of the graphite electrode 4 faces the bottom of the pressing channel 201. Pour the powder sample to be tested into the pressing channel 201 from the top of the hole, and the powder slides into the groove of the graphite electrode 4 below through the pressing channel 201. The pressing rod 103 can extend into the pressing channel 201 from top to bottom and gradually approach the groove of the graphite electrode 4. The pressing rod 103 of the upper mold 1 moves downward along the pressing channel 201 of the middle mold 2 under the action of an external force (such as manual or electric), and gradually squeezes the powder in the groove to compact the powder in the groove.

[0030] As Figure 8 and Figure 9 shown respectively in the top view and cross-sectional view of the lower mold 3. The mounting hole 301 is a slot hole with an upper opening and a hollow interior. The upper opening is aligned and communicated with the bottom of the pressing channel 201. The inner diameter of the mounting hole 301 is the same as the outer diameter of the graphite electrode 4, so that the graphite electrode 4 can just be embedded in the mounting hole 301.

[0031] Since the bottom of the pressing channel 201 is aligned with the mounting hole 301, the mounting hole 301 is filled with the graphite electrode 4, and the groove end of the graphite electrode 4 seals the bottom of the pressing channel 201. During the compaction process, the pressing pipeline guides the powder to fall into the groove directionally to form a loading area. Therefore, when squeezing in the loading area, the surrounding is a closed squeezing environment. Due to the shape and size limitations of the pressing channel 201, the powder is restricted from being squeezed in the electrode groove and will not leak outwards. It can be understood that the loading area is smaller than the area formed by the pressing channel 201.

[0032] In some embodiments, the bottom of the hole of the pressing channel 201 is flush with the bottom surface of the middle die 2, and the groove end (top surface) of the graphite electrode 4 is flush with the top surface of the lower die 3. Therefore, when the middle die 2 and the lower die 3 are stacked, the bottom surface of the middle die 2 coincides with the top surface of the lower die 3 to form a face-to-face seal. Thus, the groove end of the graphite electrode 4 located in the mounting hole 301 seals the bottom of the pressing channel 201, and the powder enters the electrode groove along the pressing channel 201.

[0033] In some embodiments, the bottom of the hole of the pressing channel 201 is flush with the bottom surface of the middle die 2, and the groove end (top surface) of the graphite electrode 4 protrudes from the top surface of the lower die 3, that is, the graphite electrode 4 extends out of the mounting hole 301. Therefore, when the middle die 2 and the lower die 3 are stacked, the groove end of the graphite electrode 4 is snapped into the pressing channel 201, and the outer edge of the graphite electrode 4 is in close contact with the inner edge of the bottom of the pressing channel 201, and the two form a snap connection seal. Thus, the groove end of the graphite electrode 4 located in the mounting hole 301 seals the bottom of the pressing channel 201, and the powder enters the electrode groove along the pressing channel 201.

[0034] Preferably, the inner diameter of the compaction part where the pressing channel 201 contacts the pressing rod 103 (such as the compaction hole 2012 hereinafter) is slightly smaller than the inner diameter of the sealing part where the pressing channel 201 contacts the graphite electrode 4 (such as the sealing hole 2013 hereinafter). The pressing rod 103 is in close contact with the pressing channel 201, and at the same time, the pressing rod 103 is dimensionally adapted to the electrode groove. Therefore, a sealed filling area is formed among the pressing rod 103, the groove and the pressing channel 201. During each extrusion process, due to being in the sealed filling area, restricted by the pressing channel 201, the powder has no leakage channel, so that the powder can only be extruded along the vertical direction and will not spread outward, realizing a one-time uniform filling. Compared with the traditional filling method where the powder overflows, the powder introduced into the mold each time can completely fill the electrode groove, which not only reduces powder waste but also avoids the problem of uneven filling caused by inconsistent powder leakage.

[0035] Since the powder directly enters from the top of the hole of the pressing channel 201 and is in the filling area, and the powder is compacted by the pressing rod 103 after filling, the powder before filling will not fall into other areas due to vibration, ensuring the uniformity and stability of filling. When the powder is fully compacted, the pressing rod 103 of the upper die 1 returns to the initial position, and then the middle die 2 and the lower die 3 are disassembled, and the filled graphite electrode 4 can be taken out for subsequent analysis.

[0036] In summary, this mold can not only avoid the powder from being disturbed and leaking during the filling process before and after, but also avoid the extrusion leakage during the compaction process, ensuring that the filling amount and density of each sample are consistent, thereby improving the accuracy and repeatability of emission spectrum analysis. At the same time, the powder is filled with almost no loss, which is especially suitable for the filling of high-value materials (such as precious metal powders, special alloy powders), improving the economy.

[0037] As an extension of this embodiment, a gap can be formed between the pressing rod 103 and the channel wall in the pressing channel 201, and the graphite electrode 4 seals the bottom of the hole of the pressing channel 201. During the compaction process, the powder is surrounded by the channel wall of the pressing channel 201 and is mainly evenly distributed along the shape of the groove during the extrusion process. Even if a small part of the powder overflows from the groove, the overflowed powder is received by the gap between the pressing rod 103 and the pressing channel 201 and will not leak to the external environment. By lifting the pressing rod 103, the small part of the overflowed powder will continue to fall into the groove from the gap, and then pressing down the pressing rod 103 again, the powder is compacted again. Compared with the powder overflow in the traditional loading method, the powder introduced each time by the mold provided in this embodiment can be completely filled into the electrode groove after multiple presses, reducing powder waste and avoiding the problem of uneven filling caused by inconsistent powder leakage.

[0038] The embodiment of the present application is composed of an upper mold 1, a middle mold 2, and a lower mold 3. The mold structure is simple and the operation is intuitive, reducing the manufacturing and maintenance costs. The mold structure is simple and easy to manufacture, so upper molds 1, middle molds 2, and lower molds 3 of various specifications can be customized to achieve compatibility with different electrode models. The mounting holes 301 of the lower mold 3 are customized according to the electrode size, and electrodes of different specifications only need to replace the mold to complete the adaptation, and it can be easily extended to be applicable to graphite electrodes 4 of different specifications and quantities.

[0039] The traditional automatic loading device uses single or a small number of electrodes to load step by step. The present application can utilize the fixed multi-channel design provided by the mold according to the large-scale demand. For example, the upper mold 1 is provided with 45 pressing rods 103, the middle mold 2 is provided with 45 pressing channels 201, and the lower mold 3 is provided with 45 mounting holes 301, and powder can be loaded into 45 graphite electrodes 4 at the same time. Dozens to hundreds of samples can be compacted in each operation cycle, and the loading quantity is increased several times. Among them, the multi-channels are independently loaded to prevent cross-contamination of samples.

[0040] This embodiment can be completely manually compacted or combined with an electric or pneumatic pressure system. Since the manual / auto mode can be freely switched, when manually pressing down the upper mold 1, it is ensured that the loading can be completed even in the power-off state, improving the reliability and operation flexibility.

[0041] In this way, the embodiment of the present application overcomes the problems of easy powder overflow, uneven loading, and poor adaptability in the traditional automatic loading device, improves the equipment applicability, cost-effectiveness, and filling uniformity, and provides an efficient, stable, and repeatable loading solution for emission spectroscopy analysis.

[0042] This embodiment is used to illustrate the preferred form of the pressing channel 201. Please refer to again Figure 7As shown, each of the pressing channels 201 includes: a sample loading hole 2011, which is opposite to the position of each pressing rod 103; a compaction hole 2012, which communicates with the sample loading hole 2011; and a plugging hole 2013, which communicates with the compaction hole 2012, and the shape and size of the plugging hole 2013 are adapted to the shape and size of the graphite electrode 4. Wherein, at least a part of each graphite electrode 4 extends out of the mounting hole 301, and the extending part of the graphite electrode 4 is embedded in the plugging hole 2013.

[0043] In this embodiment, the sample loading hole 2011, the compaction hole 2012 and the plugging hole 2013 constitute the above-mentioned through hole. The sample loading hole 2011 serves as the top of the pressing channel 201 and is the inlet for the powder sample, designed opposite to the pressing rod 103. After the powder sample is added, it slides from the sample loading hole 2011 into the compaction hole 2012, or the sample can be gently brushed in with the help of an auxiliary brush. The compaction hole 2012 provides a restricted space, and the powder drops from the compaction hole 2012 to the plugging hole 2013 and is compacted under the action of the pressing rod 103. Since the compaction hole 2012 just allows the pressing rod 103 to enter vertically, it ensures that the powder does not spread around but is directionally pressed into the electrode groove. The plugging hole 2013 matches the shape and size of the graphite electrode 4, so that the bottom of the pressing channel 201 is blocked by the groove of the graphite electrode 4, ensuring that the powder enters the electrode groove.

[0044] Wherein, the extending part of the graphite electrode 4 is embedded in the plugging hole 2013. On the one hand, it seals the outlet of the compaction hole 2012, and a sealed filling area is formed among the compaction hole 2012, the pressing rod 103 and the electrode groove. On the other hand, since the graphite electrode 4 protrudes from the mounting hole 301, it is convenient for the staff to directly pick up and place the graphite electrode 4 before and after filling.

[0045] Wherein, the height of the part of the graphite electrode 4 extending out of the mounting hole 301 should be the same as the hole depth of the plugging hole 2013. Therefore, when the graphite electrode 4 extends into the plugging hole 2013, it just blocks the plugging hole 2013, and at the same time, the middle die 2 and the lower die 3 overlap axially, that is, the lower surface of the middle die 2 coincides with the upper surface of the lower die 3.

[0046] In some embodiments, at least one guide bushing 6 is provided on the lower die 3, and at least one guide post 5 is provided on the middle die 2. The positions of each guide bushing 6 and each guide post 5 are opposite to each other. In this embodiment, the guide bushing 6 and guide post 5 structure is provided to provide an automatic alignment function when the middle die 2 is stacked on the lower die 3. During disassembly and assembly, alignment can be quickly completed, reducing the assembly time. During the compaction process, the guide post 5 is clamped in the guide bushing 6, restricting the horizontal offset of the middle die 2 relative to the lower die 3 under the action of pressure, ensuring that the upper and lower dies 3 are always aligned, enabling uniform distribution of pressure, and improving the filling quality. Among them, the heights of the guide post 5 and the guide bushing 6 are the same. When the guide post 5 is inserted into the guide bushing 6, the middle die 2 and the lower die 3 overlap axially, that is, the lower surface of the middle die 2 coincides with the upper surface of the lower die 3.

[0047] In this embodiment, please refer to again Figure 7 , the inner diameter of the sample adding hole 2011 is preferably larger than the inner diameter of the compaction hole 2012, which is convenient for the staff to add powder, and the powder then smoothly slides into the electrode groove through the compaction hole 2012. At the same time, the inner diameter of the compaction hole 2012 is the same as the outer diameter of the pressure rod 103, closing the external leakage channel. Since the inner diameter of the electrode groove is smaller than the inner diameter of the graphite electrode, the inner diameter of the compaction hole 2012 is slightly smaller than the inner diameter of the plugging hole 2013, but the inner diameter of the plugging hole 2013 is the same as the outer diameter of the graphite electrode. Therefore, the graphite electrode just fits into the plugging hole 2013, and at the same time, the powder is just compacted in the electrode groove by the pressure rod 103.

[0048] More preferably, the inner diameter difference between the compaction hole 2012 and the plugging hole 2013 is the same as the thickness between the groove wall of the electrode groove and the outer wall of the electrode. Therefore, when the graphite electrode 4 fits into the plugging hole 2013, the pressure rod 103 is in close contact with the pressing channel 201, and at the same time, the size of the pressure rod 103 is adapted to the electrode groove.

[0049] Preferably, the inner diameter of the sample adding hole 2011 gradually decreases along the direction close to the compaction hole 2012. More preferably, the narrow opening of the sample adding hole 2011 corresponding to the end point of the taper has the same aperture as the compaction hole 2012, forming a continuous channel wall. In this embodiment, the gradually shrinking inner diameter of the sample adding hole 2011 can form a structure similar to a funnel, enabling the powder to smoothly slide into the compaction hole 2012 under the action of gravity.

[0050] In some embodiments, the entire sample adding hole 2011 and the compaction hole 2012 are polished to a mirror smoothness, with the surface finish reaching below 1.6. When the powder sample is added, the sample slides into the compaction hole 2012 by means of the slope. The ultra-high surface finish design avoids the powder sample from sticking to the mold.

[0051] In another embodiment, the lower die 3 further includes multiple anti-blocking holes, each of which is connected to the bottom of each mounting hole 301. The connected anti-blocking holes and the mounting holes 301 are coaxial, and the inner diameter of the anti-blocking holes is smaller than the inner diameter of the mounting holes 301. The anti-blocking hole connected to the lower surface of the mounting holes 301 can prevent accidentally dropped powder samples from clogging the mounting position and causing damage to the electrode.

[0052] Among them, the anti-blocking hole and the mounting hole 301 are coaxial, and the inner diameter of the anti-blocking hole is smaller than the inner diameter of the mounting hole 301, so as to prevent the graphite electrode 4 from passing through the mounting hole 301 and being located in the anti-blocking hole, making the anti-blocking hole ineffective. Since the anti-blocking hole and the mounting hole 301 are coaxially arranged, they are consistent with the direction of powder falling, which facilitates the powder to flow to the anti-blocking hole.

[0053] In some embodiments, the anti-blocking hole can be a slot with a hollow interior at the upper opening, the upper opening being connected to the mounting hole 301, and the hollow interior cavity receiving accidentally dropped powder sample. In some embodiments, the anti-blocking hole is a through hole, and the accidentally dropped powder sample is directly discharged from the lower die 3 through the mounting hole 301.

[0054] like Figure 2 、 Figure 3 and Figure 4 As shown, Figure 2 1 is the overall structural diagram of the upper die 1; Figure 3 and Figure 4 They are respectively a top view and a cross-sectional view of the fixed plate 101. In a further technical solution, the upper die 1 comprises: a fixed plate 101, provided with a plurality of through-holes 1011, each of which is mounted with a pressing head 1031 of a pressing rod 103, with a shaft 1032 of the pressing rod 103 extending out of the through-hole 1011; wherein the shape and size of the shaft 1032 are adapted to the shape and size of the compacting hole 2012; and a backing plate 102, covering and fixed to the side of the fixed plate 101 facing away from the shaft 1032.

[0055] The pressure rod 103 includes an integrally formed pressure head 1031 and a rod body 1032. During installation, the pressure rod 103 is inserted from top to bottom through the through hole 1011 until the pressure head 1031 is located in the through hole 1011 of the fixed plate 101 and is just engaged by the through hole 1011. The rod body 1032 then extends out of the fixed plate 101. A pad 102 is then provided and fixed to the top surface of the fixed plate 101 to provide additional support for the pressure rod 103. After the pressure rod 103 is installed on the fixed plate 101, it can remain stable and not shake even under external pressure. Because the rod body 1032 matches the size of the compaction hole 2012, during the extrusion process, the powder can only be subjected to force in the compaction direction, with no leakage channel and will not diffuse to the surrounding area, thereby improving filling uniformity.

[0056] Combined with the above embodiments, the length of the rod body 1032 is close to the total length between the sample loading hole 2011 and the compaction hole 2012. Therefore, when the rod body 1032 enters the pressing channel 201, it can abut against the graphite electrode 4 located in the plugging hole 2013. At the same time, the upper die 1 and the middle die 2 overlap axially, that is, the lower surface of the upper die 1 coincides with the upper surface of the middle die 2. When manually applying pressure, when the upper die 1 and the middle die 2 overlap, it can be regarded that the powder in the groove has been compacted, ensuring a consistent pressing effect every time the sample is compressed.

[0057] Further, handles 7 are respectively arranged on opposite sides of the upper die 1, the middle die 2, and the lower die 3. During the compaction process, first stack the middle die 2 on the lower die 3, and then stack the upper die 1 on the middle die 2. The molds can be grasped through the handles 7 for disassembly, assembly, and transfer, greatly improving the loading and use efficiency.

[0058] Combined with the above embodiments, the mold of the present invention can apply extrusion force manually or electrically. When applying extrusion force manually, the loading uniformity of multiple graphite electrodes 4 located on the same mold under the same operation cycle can be ensured. If large-scale and multi-batch operations are required, it is difficult to ensure that the applied pressures between different batches are exactly the same. Therefore, the present invention proposes a loading system suitable for this mold, which uses an electric drive compaction mechanism (such as a drive electric cylinder 8) to achieve controllable pressure output, ensuring that the same extrusion force is applied to all batches, thereby ensuring consistency between batches and improving the reliability of test data. The extrusion force required for different batches can also be adjusted according to different test requirements.

[0059] The following provides preferred exemplary embodiments: The upper die 1 includes a backing plate 102, a fixing plate 101, and a pressing rod 103. Both the fixing plate 101 and the backing plate 102 are rectangular plates, and the two are axially overlapped to form a double-layer upper die structure. The fixing plate 101 is composed of 45 through holes. Insert the pressing heads 1031 of the 45 pressing rods 103 into the through holes 1011 of the fixing plate 101, and then fix the four corners of the backing plate 102 to the fixing plate 101 through 4 M4 screws.

[0060] The middle die 2 is in the shape of a rectangular plate, and 45 pressing channels 201 are opened on the rectangular plate. The 45 pressing channels 201 are aligned with the rod bodies 1032 of the 45 pressing rods 103. Each pressing channel 201 includes a circular funnel-shaped sample loading hole 2011, a longer cylindrical compaction hole 2012, and a shorter cylindrical plugging hole 2013. Four guide posts 5 are arranged at the four corners of the lower surface of the middle die 2.

[0061] The lower die 3 is a rectangular plate with 45 mounting holes 301 defined within it. Forty-five graphite electrodes 4 are mounted within these holes, aligned with the 45 blocking holes 2013 in the middle die 2. The graphite electrodes 4 extend through the mounting holes 301, their protruding portions just filling the blocking holes 2013. The mounting holes 301 are 6.2 mm in size, just enough to hold the graphite electrodes 4. Four guide sleeves 6 are positioned at the four corners of the upper surface of the middle die 2, accommodating the guide posts 5.

[0062] Correspondingly, for the second aspect, please refer to Figure 10 As shown, Figure 10 The figure shows the structure of the filling system for emission spectrum electrodes. The present invention also provides a filling system for emission spectrum electrodes, which is utilized in the filling mold for emission spectrum electrodes provided in the first aspect of the present invention, wherein the upper mold 1, middle mold 2, and lower mold 3 are arranged in sequence. The system also includes a body, and a power output mechanism connected to the upper mold 1 of the mold, for applying the same or different pressures to the molds of different batches. The power output mechanism includes: a driving cylinder 8 located within the body, for outputting electric power and converting the electric power into linear reciprocating motion of a power shaft 9; and a base 10 located outside the body, connected to the power shaft 9 of the driving cylinder 8 and to the upper mold 1, for driving the upper mold 1 toward or away from the middle mold 2.

[0063] Specifically, the mold is first assembled and placed on the machine body. A drive cylinder 8 converts electric power into linear reciprocating motion. The base 10 is connected to the drive cylinder 8's power shaft 9 and the upper mold 1, ensuring that the pressure applied by the compression rod 103 is evenly transmitted to the powder, achieving uniform distribution of the powder sample and consistent compression depth.

[0064] Specifically, the driving electric cylinder 8 includes a motor, a ball screw structure and a synchronous pulley. The ball screw mechanism includes a screw and a nut connected in a transmission manner and a plurality of balls. The spiral grooves of the screw and the nut are respectively provided with spiral grooves. The spiral grooves of the screw and the nut together form a ball path, and the ball path is filled with a plurality of balls to form a ball screw mechanism. The screw is connected to the output shaft of the motor in a transmission manner, and the nut is driven by the screw. The nut is fixedly connected to the power shaft 9, and the power shaft 9 is fixedly connected to the base 10. When the motor rotates, it drives the screw to rotate, and transmits force to the nut through the balls. The nut moves along the axial direction of the screw, and the nut is connected to the power shaft 9, driving the base 10 to move axially, thereby converting the rotational motion of the motor into axial reciprocating motion of the base 10. The base 10 then drives the upper mold 1 to extrude downward.

[0065] In this embodiment, the motor is drivingly connected to the screw through a synchronous pulley. The driving pulley is connected to the output shaft of the motor, the driven pulley is connected to the driving pulley through a synchronous belt, and the driven pulley is drivingly connected to the screw. In this embodiment, except for the base 10 and a part of the power shaft 9 connecting the base 10, the rest is installed inside the fuselage. The motor drives the driving pulley to rotate, and the driving pulley and the driven pulley transmit power through the synchronous belt. One end of the screw of the ball screw mechanism is connected to the driven pulley, causing the screw to rotate, thereby realizing the reciprocating motion of the base 10.

[0066] Therefore, a driving electric cylinder 8 is used to replace manual application of the extrusion pressure. During multi-batch large-scale operations, the pressure applied in each operation cycle can be kept exactly the same, ensuring uniform powder filling density for all graphite electrodes 4 and improving the accuracy of spectral detection.

[0067] It can also be understood that the specifications and quantities of the molds in different batches of this application embodiment can be different, and the driving electric cylinder 8 can adjust suitable pressure values according to parameters such as the graphite electrodes 4 of different specifications, powder types, filling amounts, etc.

[0068] As an implementation manner of this embodiment, the upper mold 1 of the mold can be fixedly installed on the base 10. For the same mold, the middle mold 2 and the lower mold 3 can be pre-installed, and the stacked modules are placed below the base 10. The base 10 drives the upper mold 1 to move in the height direction, so that the pressing rod 103 of the upper mold 1 passes through the pressing channel 201 of the middle mold 2 to extrude the powder. In this embodiment, the base 10 and the upper mold 1 are detachably fixed. Therefore, when electrodes of different specifications and quantities need to be loaded, there is no need to modify the structure of the system, and the new upper mold 1 can be fixed on the base 10 again.

[0069] As another implementation manner of this embodiment, the base 10 can be separated from the upper mold 1. For the same mold, the middle mold 2 and the lower mold 3 can be pre-installed, then the upper mold 1 is preliminarily stacked on the middle mold 2, and finally the entire mold is placed below the base 10. Through the axial movement of the base 10, the upper mold 1 is gradually extruded, so that the pressing rod 103 of the upper mold 1 gradually extrudes the powder. In this embodiment, the top surface of the upper mold 1 is a surface structure, and the base 10 is in face-to-face contact with the upper mold 1, which can adapt to the pressing requirements of various molds with inconsistent specifications and quantities.

[0070] Specifically, the fuselage includes a cabinet 15 and a carrier 11. The cabinet 15 and the carrier 11 are connected by a C-shaped combined frame 14. The driving electric cylinder 8 is fixed inside the cabinet 15. The bottom of the cabinet 15 is open, so that the power shaft 9 extends out and is connected to the base 10. The rest of the supporting structures of the driving electric cylinder 8, such as the electric cylinder controller 17, power supply and various driver brackets and other parts are all located inside the cabinet 15. The carrier 11 is located below the cabinet 15 and is supported on the ground or other bases.

[0071] Specifically, the stage 11 is arranged below the fuselage corresponding to the base 10, and the mold is placed on the stage 11; wherein, a plurality of universal balls 12 are arranged on the stage 11, and guide rails 13 are arranged on opposite sides of the stage 11, and the plurality of universal balls 12 are located between the two guide rails 13; wherein, the bottom of the lower mold 3 is in sliding contact with the universal balls 12, and opposite sides of the lower mold 3 are in movable contact with the two guide rails 13.

[0072] In this embodiment, the bottom of the lower mold 3 is in sliding contact with the universal balls 12, so that the mold can be easily pushed to move on the stage 11 without being lifted or adjusted additionally, which can improve the operation efficiency in the case of large - batch sample loading. Since the filling quantity of this application is large and the weight of the whole mold is heavy, when the mold slides along the universal balls 12 to below the base 10, the guide rails 13 ensure that the mold can only move in a fixed direction, avoiding moving deviation.

[0073] In this embodiment, without modifying the structure of the mold, by setting the distance between the two guide rails 13 to be the same as the distance between the opposite sides of the lower mold 3 with handles, the two guide rails 13 limit the lower mold 3 within a fixed area and slide in the direction of the position where the base 10 is located, preventing left - right deviation or rotation during the operation, ensuring accurate positioning of the mold during filling, and improving the filling accuracy.

[0074] In some embodiments, the height of the guide rail 13 can be set to be equal to the distance between the handle and the upper surface of the stage 11. Therefore, during the movement, the lower surface of the lower mold 3 is in contact with the universal balls 12, and at the same time, the two handles can be in contact with the two guide rails 13, providing additional guidance and support to prevent the mold from shaking or tilting. After the filling of the mold is completed, it can quickly slide out along the stage 11, facilitating the filling of the next batch.

[0075] In some embodiments, keys are arranged on the stage 11, and a display screen 16 is arranged on the fuselage; both the keys and the display screen 16 are electrically connected to the driving electric cylinder 8. In this embodiment, the display screen 16 is arranged on the cabinet 15, which can real - time feedback parameters such as the currently applied pressure, motor speed, output current, and output voltage, facilitating the operator to adjust at any time and improving the process controllability. By arranging keys on the stage 11, the driving electric cylinder 8 can be directly controlled through the keys, and the start and stop of the electric cylinder 8 can be controlled. Preferably, a start button 18 and an emergency stop button 19 can be arranged on the stage 11.

[0076] In summary, by combining multiple functional modules such as molds, power output mechanisms, intelligent controls, and stages 11, this system has high integration, strong automation, wide compatibility, convenient operation, and low maintenance costs. It significantly improves the efficiency and consistency of powder sample loading, reduces the workload of operators, and greatly shortens the sample preparation time, thereby improving the overall work efficiency of the sample loading process in emission spectroscopy analysis and enhancing the accuracy of emission spectroscopy measurement results.

[0077] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0078] It should also be noted that in this text, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Nor should they be construed as indicating or implying relative importance. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article, or terminal device.

[0079] The above provides a detailed introduction to a loading mold and system for emission spectroscopy electrodes provided by this application. Specific examples are used in this text to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only for helping to understand this application. The content of this specification should not be construed as a limitation to this application. At the same time, for those of ordinary skill in the art, based on this application, there will be various forms of changes in the specific implementation manner and application scope. It is not necessary and impossible to enumerate all the implementation manners here, and the obvious changes or variations derived therefrom are still within the protection scope of this application.

Claims

1. A loading mold for an emission spectrum electrode, characterized in that The mold includes: An upper die is provided with a plurality of pressing rods; a middle die, provided with a plurality of pressing channels, each of the pressing channels being used to allow a powder sample to pass through; The lower die is provided with a plurality of mounting holes, each of the mounting holes is used for assembling a graphite electrode; Wherein, each of the pressing rods, each of the pressing channels and each of the mounting holes have a one-to-one correspondence in position, and a side of each of the pressing channels facing the mounting hole is blocked by the corresponding graphite electrode; The powder sample is stacked into the groove of the graphite electrode in each corresponding mounting hole through each pressing channel. Each pressing rod passes through each corresponding pressing channel to squeeze the powder sample. The pressing channel restricts the powder sample from leaking out of the groove so as to compact the powder sample in the groove of the graphite electrode.

2. The loading mold for an emission spectral electrode according to claim 1, wherein Each of the pressing channels comprises: a sample loading hole, opposite to the position of each of the pressure rods; a compacting hole, connected to the sample addition hole; A plugging hole is connected to the compacting hole, and the shape and size of the plugging hole are adapted to the shape and size of the graphite electrode; Wherein, at least a portion of each of the graphite electrodes extends out of the mounting hole, and the extended portion of the graphite electrode is embedded in the blocking hole.

3. The loading mold for an emission spectrum electrode according to claim 2, characterized in that, The inner diameter of the sample adding hole gradually decreases along the direction approaching the compacting hole.

4. A loading mold for an emission spectrum electrode according to claim 1, characterized in that, The lower mold further includes a plurality of anti-blocking holes, each of which is connected to the bottom of each of the mounting holes.

5. A loading mold for an emission spectrum electrode according to claim 2, characterized in that, The upper mold comprises: The fixing plate is provided with a plurality of through holes, each of which is provided with a pressing head of each pressing rod, and the rod body of the pressing rod extends out of the through hole; wherein the shape and size of the rod body are adapted to the shape and size of the compacting hole; A backing plate is covered and fixed on a side of the fixing plate facing away from the shaft.

6. The filling mold for an emission spectral electrode according to claim 2, characterized in that, At least one guide sleeve is provided on the lower die, and at least one guide post is provided on the middle die. Each guide sleeve is positioned opposite to each guide post.

7. A loading mold for an emission spectral electrode according to any one of claims 1-6, characterized in that, Handles are respectively provided on opposite sides of the upper mold, the middle mold and the lower mold.

8. A loading system for an emission spectroscopy electrode, characterized in that, The system comprises a filling mold for an emission spectrum electrode according to any one of claims 1 to 7, wherein an upper mold, a middle mold and a lower mold of the mold are arranged in sequence; the system further comprises a body, and; a power output mechanism connected to the upper die of the mold, for applying the same or different pressures to the molds of different batches; The power output mechanism includes: A driving electric cylinder, located in the body, for outputting electric power and converting the electric power into linear reciprocating motion of the power shaft; The base is located outside the machine body, is connected to the power shaft of the driving electric cylinder, and is connected to the upper mold, and is used to drive the upper mold to approach or move away from the middle mold.

9. A loading system for an emission spectral electrode according to claim 8, characterized in that, The system further comprises: A carrier, arranged below the body corresponding to the base, and the mold is placed on the carrier; Wherein, a plurality of universal balls are provided on the carrier, guide rails are provided on opposite sides of the carrier, and the plurality of universal balls are located between two guide rails; The bottom of the lower die is in sliding contact with the universal ball, and the opposite sides of the lower die are in movably contact with the two guide rails.

10. The filling system for an emission spectral electrode according to claim 9, characterized in that, A button is provided on the carrier stage, and a display screen is provided on the body; both the button and the display screen are electrically connected to the driving electric cylinder.

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