Floating type sintering platform demolding and sampling device

Abstract

The invention is suitable for the technical field of material sintering, and provides a floating type sintering platform demolding and sampling device which comprises a sintering platform, a floating lower electrode module, a floating mold module, a lifting mold frame, a demolding and mold cleaning module and a sample collecting and electrode cleaning module. The lifting mold frame is provided with a first platform and a second platform, and the first platform penetrates through the floating lower electrode module through a first limiting groove to jack the floating mold module to a set height; the sample collecting and electrode cleaning module slides to the position below the mold module through the second limiting groove, and sample receiving and electrode cleaning are achieved. High-temperature online demolding can be achieved, the sample breaking risk is reduced, and the breaking problem caused by the difference of thermal expansion coefficients is avoided; the device integrates demolding, mold cleaning, electrode cleaning and sample collecting functions, is compact in structure, reduces the occupied area and complexity of equipment, prolongs the service life of the mold and the electrode, and improves the sample quality.

Description

Technical Field

[0001] This invention relates to the field of material sintering technology, specifically a floating sintering platform demolding and sampling device. Background Technology

[0002] Spark plasma sintering (SPS) technology has been widely used in materials research and new material development due to its advantages such as high efficiency, speed, and ability to prepare high-performance materials. In the SPS process, powder is loaded into a mold and placed in a sintering chamber. Pulsed direct current and pressure are applied through upper and lower electrodes to achieve rapid densification and sintering of the powder. After sintering, the sintered sample needs to be removed from the mold (demolding) and collected. Simultaneously, the used mold and electrodes are cleaned to prepare for the next experiment.

[0003] In the process of continuous development of spark plasma sintering (SPS) technology, the demolding and sampling process has gradually become a key bottleneck restricting the efficiency and quality of the production line. Traditional SPS equipment requires manual intervention for demolding, cleaning, and sampling after sintering. Manual demolding often adopts an offline demolding method at room temperature (such as a device for demolding hot-pressed sintered products disclosed in Chinese patent CN217573708U). This is not only inefficient, making the demolding and sampling process a bottleneck in continuous production, but also causes the sample to be damaged during demolding and rapid cooling due to the difference in the coefficient of thermal expansion between the sample and the mold. Chinese patent CN118391921A discloses a feeding system and feeding method for continuous SPS, which achieves temperature diversion and coordinated control between various stations. However, demolding, cleaning, and sampling are still scattered in different stations, which not only increases the equipment footprint and failure rate, but also increases the sample transfer distance, making it easy to cause secondary damage to the green body.

[0004] Therefore, in view of the above situation, there is an urgent need to provide a floating sintering platform demolding and sampling device to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a floating sintering platform demolding and sampling device, which aims to overcome the shortcomings of existing SPS sintering devices, such as the easy damage to samples and low efficiency of offline demolding at room temperature, and the increased footprint and failure rate caused by the decentralized control of demolding, cleaning and sampling in continuous production.

[0006] This invention is implemented as follows: a floating sintering platform demolding and sampling device, comprising: The sintering platform, the floating lower electrode module, and the floating mold module are provided with a guiding mechanism. The floating lower electrode module and the floating mold module are slidably mounted on the sintering platform through the guiding mechanism. The sintering platform also includes: Lifting mold frame, demolding and mold cleaning module, and sample collection and electrode cleaning module; The lifting mold frame includes a first platform and a second platform for lifting the floating lower electrode module, with the first platform located on the second platform. The first platform is provided with a first limiting groove for passing through the floating lower electrode module and lifting the floating mold module upward. The first platform is also provided with a second limiting groove. The sample collection and electrode cleaning module includes a sample collection chute and a cleaning sand belt. The sample collection chute and the cleaning sand belt can slide through the second limiting groove to below the floating mold module, so that the sample collection chute receives the target sample output by the demolding and mold cleaning module, and the cleaning sand belt cleans the upper surface of the floating lower electrode module lifted by the second platform.

[0007] As a further aspect of the present invention: the guiding mechanism includes an upper guide column and a lower guide column fixedly installed on both sides of the sintering platform.

[0008] As a further aspect of the present invention: multiple sets of the upper guide post and the lower guide post are provided, and the floating lower electrode module and the lower guide post, as well as the floating mold module and the upper guide post, are slidably connected by lubricated bearings.

[0009] As a further aspect of the present invention: the demolding and mold cleaning module includes a pressure bar and a demolding punch disposed at the bottom of the pressure bar.

[0010] As a further aspect of the present invention, the demolding and mold cleaning module further includes a cleaning brush fixedly installed between the demolding punch and the pressure rod.

[0011] As a further aspect of the present invention: the demolding punch is connected to the pressure rod via a thread.

[0012] As a further aspect of the present invention: the diameter of the demolding punch is not greater than the inner diameter of the floating mold module; The outer diameter of the cleaning brush is larger than the inner diameter of the floating mold module.

[0013] As a further aspect of the present invention: the sample collection chute and the cleaning sand belt are fixedly connected together by a support column.

[0014] As a further aspect of the present invention: the sample collection and electrode cleaning module includes: Support frame; A guide bearing is slidably disposed between the sample collection chute and the cleaning sand belt, and the sample collection chute and the cleaning sand belt are rotatable around the guide bearing, which is disposed on the top of the support frame; A push rod applies a thrust to the end of the sample collection chute, so that the sample collection chute, relying on the guide bearing, drives the cleaning sand belt to complete the turning and translational movements. And a belt drive wheel for driving the cleaning belt to rotate.

[0015] As a further aspect of the present invention, the thrust applied by the push rod is a horizontal thrust.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The sintering platform is fixedly connected to the guide rail and other conveying systems to enable the sintering unit to quickly switch from the sintering station to the demolding and cleaning station, so that the sample can be quickly demolded at high temperature (high temperature online demolding treatment). This not only reduces the risk of sample breakage during demolding, but also avoids sample or mold breakage caused by the difference in expansion coefficient between the sample and the mold during rapid cooling. 2. An integrated demolding-cleaning-sampling design adapted to a floating platform is implemented, integrating demolding, mold cleaning, electrode cleaning, and sample collection within a minimal workstation. This not only reduces the equipment's footprint but also lowers the complexity of continuous equipment and reduces the failure rate. The addition of mold and electrode cleaning processes significantly improves the service life of molds and electrodes, reduces the probability of powder mixing, and significantly improves the quality of sintered samples. 3. The designed limiting and avoidance mechanism (such as the first limiting groove) allows the lifting mold frame to penetrate the floating lower electrode module and directly lift the floating mold module to the set height, avoiding mechanical interference and providing structural support for continuous production. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of this invention is prepared from a triaxial perspective. Figure 2 This is a schematic diagram of the overall structure of the present invention from a triaxial perspective. Figure 3 This is a schematic diagram of the lifting mold frame of the present invention; Figure 4 This is a schematic diagram of the demolding and mold cleaning module of the present invention (a: overall view; b: exploded view). Figure 5 This is a schematic diagram of the sample collection and electrode cleaning module of the present invention (a: preparation diagram; b: working diagram). Figure 6 This is a schematic diagram of the overall structure of the present invention on the right side.

[0019] In the diagram: 1-Sintering platform, 2-Floating lower electrode module, 3-Floating mold module, 4-Lower guide post, 5-Upper guide post, 6-Lifting mold frame, 61-First platform, 62-Second platform, 63-First limiting groove, 64-Second limiting groove, 7-Demolding and mold cleaning module, 71-Demolding punch, 72-Cleaning brush, 8-Sample collection and electrode cleaning module, 81-Sample collection chute, 82-Cleaning sanding belt, 83-Support frame, 84-Push rod, 85-Guide bearing, 86-Sanding belt drive wheel. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The present invention will be further explained below with reference to specific embodiments.

[0024] Please see Figures 1-6This invention provides a floating sintering platform demolding and sampling device, comprising a sintering platform 1, a floating lower electrode module 2, and a floating mold module 3, as well as a lifting mold frame 6, a demolding and mold cleaning module 7, and a sample collection and electrode cleaning module 8. The lifting mold frame 6 is provided with a first platform 61 and a second platform 62. The first platform 61, through a first limiting groove 63, passes through the floating lower electrode module 2 and lifts the floating mold module 3, which slides upwards along the upper guide post 5 to a set height. The sample collection and electrode cleaning module 8, with a sample collection chute 81 and a cleaning sand belt 82, passes through a second limiting groove 64 on the first platform 61 and slides below the floating mold module 3. The sample collection chute 81 receives the target sample output by the demolding and mold cleaning module 7, and the cleaning sand belt 82 cleans the upper surface of the floating lower electrode module 2, which is lifted by the second platform 62 and slides upwards along the lower guide post 4. The upper guide post 5 and the lower guide post 4 form a guiding mechanism.

[0025] In this embodiment, the floating lower electrode module 2 and the floating mold module 3 are slidably connected to the sintering platform 1, and the sintering platform 1 is fixedly connected to the guide rail and other conveying systems. When the sintering platform 1 moves to the target station, the first platform 61 of the lifting mold frame 6 first contacts the lower surface of the floating mold module 3. To avoid interference between the first platform 61 and the floating lower electrode module 2 during the rising process, the first platform 61 is provided with a first limiting groove 63. The first limiting groove 63 allows the first platform 61 to pass through the floating lower electrode module 2, lift the floating mold module 3, and slide it up the upper guide column to a set height. At this time, the second platform 62 contacts the lower surface of the floating lower electrode module 2. Figure 2 As shown. The sample collection chute 81 and cleaning sand belt 82 of the sample collection and electrode cleaning module 8 are fixedly connected together by a support column. To avoid interference between the sample collection and electrode cleaning module 8 and the lifting mold frame 6, a second limiting groove 64 is machined into the lifting mold frame 6. After the floating mold module 3 slides up to the set height, the sample collection chute 81 and cleaning sand belt 82 slide through the second limiting groove 64 to the bottom of the floating mold module 3, as shown. Figure 2As shown. At this time, the cleaning sand belt 82 begins to rotate, and the second platform 62, which is in contact with the lower surface of the floating lower electrode module 2, continues to lift the floating lower electrode module 2 so that it slides up along the lower guide post 4 until it is in close contact with the cleaning sand belt 82 until cleaning is completed. At the same time, the demolding and mold cleaning module 7 slides down along the inner wall of the floating mold module 3, pressing the target sample into the sample collection groove 81. The sample is demolded quickly at high temperature (high temperature online demolding treatment), which not only reduces the risk of sample breakage during demolding, but also avoids sample or mold breakage caused by the difference in the coefficient of thermal expansion between the sample and the mold during rapid cooling. After sample collection and cleaning are completed, all components return to their initial positions. This process integrates demolding, sample collection and electrode cleaning into one compact structure with a high degree of automation. The synchronous cleaning of the electrodes improves the service life of the electrodes and ensures the quality of sample sintering.

[0026] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 The demolding and mold cleaning module 7 is equipped with a demolding punch 71 and a cleaning brush 72. The demolding punch 71 is connected to the pressure rod by a thread, and the cleaning brush 72 is fixed between the demolding punch 71 and the pressure rod. The diameter of the demolding punch 71 is equal to or slightly smaller than the inner diameter of the floating mold module 3.

[0027] In this embodiment, the demolding punch 71 directly contacts the target sample. Supported by the lifting mold frame 6, the floating mold module 3 allows the target sample to slide relative to the inner wall of the floating mold module 3, thus completing the demolding process. Simultaneously, the cleaning brush 72 slides relative to the inner wall of the floating mold module 3 to clean the inner surface of the mold. This component integrates demolding and mold cleaning, improving the mold's service life and further enhancing the quality of sample sintering.

[0028] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 The sample collection and electrode cleaning module 8 also includes a support frame 83, a push rod 84, a guide bearing 85, and a sanding belt drive wheel 86. The push rod 84 applies a horizontal thrust to the end of the sample collection chute 81. The sample collection chute 81, relying on the guide bearing 85 fixed to the upper end of the support frame 83, drives the cleaning sanding belt 82 to complete a turning and translational movement (i.e., the state of the sample collection and electrode cleaning module 8 changes from...). Figures 1 to 2 (Transformation). The sanding belt drive wheel 86 drives the cleaning sanding belt 82 to rotate; the push rod 84 can be a telescopic rod controlled by a servo motor, which is not specifically limited here.

[0029] In this embodiment, the guide bearing 85, fixed to the upper end of the support frame 83, is located between the sample collection chute 81 and the cleaning sand belt 82. When the push rod 84 begins to output horizontal thrust towards the sintering platform 1, the sample collection chute 81 rotates preferentially due to the guide bearing 85 until the sample collection chute 81 and the cleaning sand belt 82 reach a horizontal state. Then, the sample collection chute 81 and the cleaning sand belt 82 continue to move under the push of the push rod 84 to the bottom of the floating mold module 3. At this time, the sand belt drive wheel 86 drives the cleaning sand belt 82 to rotate and clean the electrode surface. This component integrates sample collection and electrode cleaning, and the rotating and folding design reduces the floor space.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating sintering platform demolding and sampling device, comprising a sintering platform (1), a floating lower electrode module (2), and a floating mold module (3), wherein a guiding mechanism is provided on the sintering platform (1), and the floating lower electrode module (2) and the floating mold module (3) are slidably mounted on the sintering platform (1) through the guiding mechanism, characterized in that, Also includes: Lifting mold frame (6), demolding and mold cleaning module (7) and sample collection and electrode cleaning module (8); The lifting mold frame (6) includes a first platform (61) and a second platform (62) for lifting the floating lower electrode module (2), and the first platform (61) is located on the second platform (62). The first platform (61) is provided with a first limiting groove (63) for passing through the floating lower electrode module (2) and lifting the floating mold module (3) upward. The first platform (61) is also provided with a second limiting groove (64). The sample collection and electrode cleaning module (8) includes a sample collection chute (81) and a cleaning sand belt (82). The sample collection chute (81) and the cleaning sand belt (82) can slide through the second limiting groove (64) to the bottom of the floating mold module (3) so that the sample collection chute (81) receives the target sample output by the demolding and mold cleaning module (7), and the cleaning sand belt (82) cleans the upper surface of the floating lower electrode module (2) lifted by the second platform (62).

2. The floating sintering platform demolding and sampling device according to claim 1, characterized in that, The guiding mechanism includes an upper guide column (5) and a lower guide column (4) fixedly installed on both sides of the sintering platform (1).

3. The floating sintering platform demolding and sampling device according to claim 2, characterized in that, The upper guide post (5) and the lower guide post (4) are provided in multiple sets, and the floating lower electrode module (2) and the lower guide post (4) and the floating mold module (3) and the upper guide post (5) are slidably connected by lubricating bearings.

4. The floating sintering platform demolding and sampling device according to claim 1, characterized in that, The demolding and mold cleaning module (7) includes a pressure bar and a demolding punch (71) located at the bottom of the pressure bar.

5. The floating sintering platform demolding and sampling device according to claim 4, characterized in that, The demolding and mold cleaning module (7) also includes a cleaning brush (72) fixedly installed between the demolding punch (71) and the pressure bar.

6. The floating sintering platform demolding and sampling device according to claim 5, characterized in that, The demolding punch (71) is connected to the pressure bar by a thread.

7. The floating sintering platform demolding and sampling device according to claim 5, characterized in that, The diameter of the demolding punch (71) is not greater than the inner diameter of the mold of the floating mold module (3); The outer diameter of the cleaning brush (72) is larger than the inner diameter of the floating mold module (3).

8. The floating sintering platform demolding and sampling device according to claim 1, characterized in that, The sample collection chute (81) and the cleaning sand belt (82) are fixedly connected together by a support.

9. The floating sintering platform demolding and sampling device according to claim 8, characterized in that, The sample collection and electrode cleaning module (8) includes: Support frame (83); A guide bearing (85) is slidably disposed between the sample collection chute (81) and the cleaning sand belt (82), and the sample collection chute (81) and the cleaning sand belt (82) are rotatable around the guide bearing (85), which is disposed on the top of the support frame (83); Push rod (84), the push rod (84) applies a thrust to the end of the sample collection chute (81) so that the sample collection chute (81) drives the cleaning sand belt (82) to complete the turning and translational movement by means of the guide bearing (85); And a belt drive wheel (86) for driving the cleaning belt (82) to rotate.

10. The floating sintering platform demolding and sampling device according to claim 9, characterized in that, The push rod (84) applies a horizontal thrust.

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