An automatic graphite paper pressing and replacement device

Abstract

The application is suitable for the technical field of powder metallurgy sintering equipment, and provides an automatic graphite paper pressing and replacing device, which comprises a sintering platform containing a sintering die; further comprises a graphite paper winding module, a graphite paper group replacing module, a graphite paper hollow punching module and a conveying mechanism; the graphite paper winding module comprises a graphite paper winding working unit and a graphite paper winding standby unit, the graphite paper winding working unit comprises a graphite paper recovery winding drum for conveying new graphite paper between the graphite paper hollow punching module and the sintering die; the graphite paper hollow punching module comprises a hollow punch for punching graphite paper sheets of fixed specifications and a graphite paper push rod for pressing the graphite paper sheets to a set depth of the sintering die, the application realizes the full-process automation of graphite paper from feeding, punching, pressing to waste recovery and unit replacement, effectively solves the problems of low efficiency, poor quality consistency and safety risks of manual operation, and is suitable for continuous sintering production lines.

Description

Technical Field

[0001] This invention relates to the field of powder metallurgy sintering equipment technology, specifically an automatic graphite paper pressing and replacement device, which is particularly suitable for the automatic conveying, precise cutting, pressing and positioning, and waste recycling of graphite paper between the mold and the pressing head in continuous and automated sintering production lines. Background Technology

[0002] Spark plasma sintering (SPS), as an advanced powder metallurgy sintering technology, has been widely used in the preparation of high-performance ceramics, metal composites, and functionally graded materials. During the SPS process, graphite paper is typically placed between the sintering mold and the pressure head to prevent adhesion, conduct current, and ensure uniform heat transfer.

[0003] Currently, the placement and replacement of graphite paper largely rely on manual operation: operators pre-cut the graphite paper according to the mold cavity dimensions and then manually place it into the mold. This traditional method has many drawbacks: First, manual operation is inefficient and difficult to match the pace of continuous sintering production; second, the consistency of manual cutting and placement is poor, and misalignment or wrinkles can easily affect the quality of sintered samples; third, frequent manual work near high-temperature equipment also poses certain safety risks. In addition, each graphite paper replacement requires interrupting the sintering process, severely restricting the improvement of the automation level of the entire production line.

[0004] Therefore, there is an urgent need to develop a fully automated device that can be integrated into a continuous sintering production line to achieve automatic feeding, precise cutting, pressing, and waste recycling of graphite paper, so as to improve production efficiency, ensure process consistency, and ensure operational safety. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic graphite paper pressing and replacement device, which aims to solve the problems mentioned in the background art.

[0006] The present invention is implemented as follows: an automatic graphite paper pressing and changing device includes a sintering platform, wherein the sintering platform includes a sintering mold;

[0007] It also includes a graphite paper winding module, a graphite paper pack replacement module, a graphite paper hollow punching module, and a conveying mechanism;

[0008] The graphite paper winding module includes a graphite paper winding working unit and a graphite paper winding spare unit. The graphite paper winding working unit includes a graphite paper recycling roll for conveying new graphite paper between the graphite paper hollow punching module and the sintering mold.

[0009] The graphite paper hollow punching module includes a hollow punch for punching graphite paper sheets of a fixed specification and a graphite paper pusher for pressing the graphite paper sheets into the sintering mold at a set depth.

[0010] When the graphite paper in the graphite paper winding unit is used up, the conveying mechanism will transport the graphite paper winding unit to the graphite paper replacement module for replacement.

[0011] As a further aspect of the present invention: the graphite paper winding unit includes a graphite paper storage roll, a guide roller, a first L-shaped support base, and a second L-shaped support base.

[0012] The first L-shaped support base supports the graphite paper storage roll, and the bottom of the first L-shaped support base is fixedly connected to the magnetic switch base;

[0013] The second L-shaped support base supports the graphite paper recycling roll and the guide roller, and the second L-shaped support base is fixedly connected to the first L-shaped support base;

[0014] The graphite paper storage roll is guided by the guide roller to supply new graphite paper to the graphite paper recycling roll.

[0015] As a further aspect of the present invention: the graphite paper replacement module includes a first replacement guide rail and a second replacement guide rail;

[0016] The first replacement guide rail and the second replacement guide rail are respectively fixedly provided with a first support slider and a second support slider.

[0017] The first and second support sliders alternately receive the graphite paper winding working unit and the graphite paper winding standby unit.

[0018] As a further aspect of the present invention: the conveying mechanism includes a first conveying module and a second conveying module, and the graphite paper winding unit is magnetically connected to the second conveying module through a magnetic switch base.

[0019] As a further aspect of the present invention: the first transmission module includes a first transmission guide rail and an L-shaped guide rail support plate disposed on the first transmission guide rail.

[0020] As a further aspect of the present invention: the second transmission module includes a second transmission guide rail fixedly connected to the L-shaped guide rail support plate.

[0021] As a further aspect of the present invention: the second conveying module further includes a movable slider, which moves laterally along the second conveying guide rail, the first replacement guide rail and the second replacement guide rail.

[0022] As a further embodiment of the present invention: the magnetic switch base includes a fixed platform, a magnetic switch lever, and a support groove;

[0023] The upper surface of the fixed platform is fixedly connected to the first L-shaped support base, and the lower surface is magnetically connected to the movable slider through output magnetic force.

[0024] The magnetic switch lever controls the presence or absence of magnetic force on the lower surface of the fixed platform.

[0025] The support groove is slidably connected to the first support slider and the second support slider.

[0026] As a further aspect of the present invention: a return spring is provided between the hollow punch and the graphite paper push rod;

[0027] The two ends of the return spring are fixedly connected to the hollow punch and the graphite paper push rod, respectively. The return spring transmits the pressing force output by the graphite paper push rod to the hollow punch.

[0028] As a further embodiment of the present invention: the first replacement guide rail and the second replacement guide rail are respectively fixedly provided with a first push rod and a second push rod.

[0029] The first push rod and the second push rod alternately control the graphite paper winding unit and the magnetic switch lever.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. The integrated hollow punching and elastic pressing design adopts a graphite paper hollow punching module that integrates punching and pressing functions. Combined with the return spring to transmit and adjust the pressure, it realizes the continuous and precise punching and deep pressing in one set of actions, ensuring the forming quality and positional accuracy of graphite paper sheets, and significantly improving the quality stability and repeatability of sintered samples.

[0032] 2. The magnetic coupling quick-change module enables rapid connection and separation between the working unit and the conveying module through the magnetic switch base. Combined with the dual guide rail replacement module and push rod control system, it realizes automatic and rapid switching between the graphite paper winding working unit and the standby unit, ensuring the continuity of production.

[0033] 3. Modular and space-optimized layout: Through L-shaped support base, irregular structure design and guide roller arrangement, a large number of functional components are integrated in a limited space, avoiding interference with the sintering platform and realizing the miniaturization and efficient integration of the device.

[0034] 4. The fully automated graphite paper processing flow has constructed a complete automated system that includes automatic paper feeding, punching, pressing, waste recycling and unit replacement, truly realizing unmanned operation of graphite paper processing. Attached Figure Description

[0035] 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.

[0036] Figure 1 This is a schematic diagram of the overall and partial structure of the automatic graphite paper laying process of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall and partial structure of the automatic graphite paper replacement process of the present invention;

[0038] Figure 3 This is a schematic diagram of the transmission module of the present invention;

[0039] Figure 4 This is a schematic diagram of the graphite paper winding unit of the present invention;

[0040] Figure 5 This is a schematic diagram of the graphite paper hollow punching module of the present invention (a: preparation diagram; b: working diagram).

[0041] Figure 6 This is a schematic diagram of the magnetic switch base of the present invention.

[0042] In the attached diagram: 1-Sintering platform, 11-Sintering mold, 2-Graphite paper winding module, 21-Graphite paper winding working unit, 211-Graphite paper, 212-Graphite paper recycling roll, 213-Graphite paper storage roll, 214-Guide roller, 215-First L-shaped support base, 216-Second L-shaped support base, 217-Magnetic switch base, 2171-Fixed platform, 2172-Magnetic switch lever, 2173-Support slide, 22-Graphite paper winding spare unit 3-Graphite paper replacement module, 31-First replacement guide rail, 311-First support slider, 312-First push rod, 32-Second replacement guide rail, 321-Second support slider, 322-Second push rod, 4-Graphite paper hollow punch module, 41-Hollow punch, 42-Graphite paper push rod, 43-Reset spring, 5-First conveying module, 51-First conveying guide rail, 52-L-shaped guide rail support plate, 6-Second conveying module, 61-Second conveying guide rail, 62-Moving slider. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The present invention will be further explained below with reference to specific embodiments.

[0047] Please see Figures 1-6 The present invention provides an automatic graphite paper pressing and replacement device, which includes a sintering platform 1, a graphite paper winding module 2, a graphite paper group replacement module 3, a graphite paper hollow punching module 4, and a conveying mechanism. The conveying mechanism includes a first conveying module 5 and a second conveying module 6.

[0048] The sintering platform 1 includes a sintering mold 11. The graphite paper winding module 2 is equipped with a graphite paper winding working unit 21 and a graphite paper winding spare unit 22. The graphite paper winding working unit 21 conveys new graphite paper 211 between the graphite paper hollow punch module 4 and the sintering mold 11 through a graphite paper recycling roll 212. The graphite paper hollow punch module 4 is equipped with a hollow punch 41, a graphite paper push rod 42, and a return spring 43. The two ends of the return spring 43 are fixedly connected to the hollow punch 41 and the graphite paper push rod 42, respectively. The return spring 43 transmits the pressing force output by the graphite paper push rod 42 to the hollow punch 41. The hollow punch 41 punches graphite paper sheets of a fixed specification, and the graphite paper push rod 42 presses the graphite paper sheets into the sintering mold 11 to a set depth. Generally, there is one layer of graphite paper above and below the sintering powder, both of which need to extend into the sintering mold to a certain depth. By laying graphite paper sheets to prevent the sintered sample and electrode from sticking together, and by "optimizing the current / pressure distribution, isolating the sample from the mold, and improving the ease of demolding", the core problems in the SPS process such as "uneven temperature, large mold wear, and easy sample breakage" are solved. Ultimately, high density, high uniformity, and low defect sintered body preparation is achieved, while reducing process costs (extending mold life and reducing scrap rate).

[0049] The graphite paper winding unit 21 and the second conveying module 6 are magnetically connected through a magnetic switch base 217. When the graphite paper in the graphite paper winding unit 21 is used up, the first conveying module 5 conveys the second conveying module 6 to a set height. The second conveying module 6 then conveys the graphite paper winding unit 21 to the graphite paper replacement module 3. The graphite paper replacement module 3 completes the replacement of the graphite paper winding unit 21 and the graphite paper winding spare unit 22 by opening and closing the magnetic switch base 217.

[0050] In this embodiment, the sintering platform 1 is connected to a conveying system such as guide rails. When the sintering platform 1 operates to the graphite paper automatic pressing and changing station, the first conveying module 5 transports the graphite paper winding unit 21 to the top of the sintering mold 11 through the second conveying module 6. At this time, the new graphite paper 211 is close to the upper surface of the sintering mold 11. The graphite paper hollow punch module 4 located directly above the sintering mold 11 receives external pressure, causing the graphite paper push rod 42 to move towards the sintering mold 11. Under the action of the return spring 43, the hollow punch 41 moves together with the graphite paper push rod 42 until the lower edge of the hollow punch 41 contacts the new graphite paper 211, and drives the new graphite paper 211 to contact the sintering mold 11. At this time, the graphite paper pusher 42 continues to move towards the sintering mold 11, and transmits the pressing force to the hollow punch 41 through the return spring 43. The cutting edge at the end of the hollow punch 41 cuts out graphite paper sheets of the set specifications from the new graphite paper 211 based on the upper surface of the sintering mold 11. The graphite paper pusher 42 continues to move along the inner wall of the hollow punch 41, and presses the graphite paper sheet to the set depth of the sintering mold 11 after contacting it. Then the graphite paper pusher 42 moves in the opposite direction, driving the return spring 43 and the hollow punch 41 back to the initial position. At this time, the graphite paper recycling roll 212 winds up the old graphite paper, waiting for the next sintering platform 1 to run to the graphite paper automatic pressing and changing station. The graphite paper winding unit 21 and the second conveying module 6 are magnetically connected via a magnetic switch base 217. When all the new graphite paper in the graphite paper winding unit 21 is used up, the first conveying module 5 conveys the second conveying module 6 to a set height. The second conveying module 6 then conveys the graphite paper winding unit 21 to the graphite paper group replacement module 3. The graphite paper group replacement module 3 replaces the graphite paper winding unit 21 and the graphite paper winding spare unit 22 by opening and closing the magnetic switch base 217. At this time, the graphite paper winding spare unit 22 is converted into the graphite paper winding unit 21 to continue the graphite paper pressing work, while the old graphite paper winding unit 21 remains in the graphite paper group replacement module 3 waiting to be replaced. This set of components solves the shortcomings of the traditional SPS process, which requires manual pressing of graphite paper. It provides an automated solution for pressing and replacing graphite paper, which not only eliminates the need for manual intervention, but also allows for the customization of the shape and size of the graphite paper as needed. This improves the forming quality and positional accuracy of the graphite paper sheets, shortens the process flow, increases production efficiency, and significantly improves the quality stability and repeatability of sintered samples.

[0051] Please refer to Figure 1 , Figure 2 and Figure 4The graphite paper winding unit 21 is equipped with a graphite paper storage roll 213, a guide roller 214, a first L-shaped support base 215, and a second L-shaped support base 216. The first L-shaped support base 215 supports the graphite paper storage roll 213, and its bottom is fixedly connected to the magnetic switch base 217. The second L-shaped support base 216 supports the graphite paper recycling roll 212 and the guide roller 214, and is fixedly connected to the first L-shaped support base 215. The graphite paper storage roll 213 provides new graphite paper to the graphite paper recycling roll 212 through the guiding action of the guide roller 214.

[0052] In this embodiment, the graphite paper storage roll 213 is fixedly connected to the magnetic switch base 217 via the first L-shaped support base 215, and the graphite paper recycling roll 212 and the guide roller 214 are fixedly connected to the magnetic switch base 217 via the second L-shaped support base 216 and the first L-shaped support base 215. New graphite paper is wound on the graphite paper storage roll 213, while the old graphite paper with punched holes is wound on the graphite paper recycling roll 212. The first L-shaped support base 215 and the second L-shaped support base 216 not only provide a solid and stable support for the graphite paper pressing operation, but the irregular design of the second L-shaped support base 216 also avoids interference between the graphite paper winding module 2 and the sintering platform 1, achieving miniaturization and efficient integration of the device. When the graphite paper pressing operation is performed, the graphite paper recycling roll 212 rotates, driving the graphite paper 211, which in turn drives the graphite paper storage roll 213 to rotate, conveying the new graphite paper directly above the sintering mold 11. The guide roller 214 increases the bending radius of the graphite paper, preventing the graphite paper, especially the punched graphite paper, from breaking.

[0053] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 The graphite paper replacement module 3 is equipped with a first replacement guide rail 31 and a second replacement guide rail 32. A first support slider 311 and a second support slider 321 are fixedly mounted on the first and second replacement guide rails 31 and 32 respectively. The first support slider 311 and the second support slider 321 alternately receive the graphite paper winding working unit 21 and the graphite paper winding spare unit 22. The first conveying module 5 is equipped with a first conveying guide rail 51 and an L-shaped guide rail support plate 52. The L-shaped guide rail support plate 52 is fixedly connected to the second conveying guide rail 61 of the second conveying module 6. The second conveying module 6 is also equipped with a movable slider 62, which moves laterally along the second conveying guide rail 61, the first replacement guide rail 31, and the second replacement guide rail 32.

[0054] The magnetic switch base 217 is provided with a fixed platform 2171, a magnetic switch lever 2172, and a support groove 2173. The upper surface of the fixed platform 2171 is fixedly connected to the first L-shaped support base 215, and the lower surface is magnetically connected to the movable slider 62 through output magnetic force. The magnetic switch lever 2172 controls the presence or absence of magnetic force on the lower surface of the fixed platform 2171. The support groove 2173 is slidably connected to the first support slider 311 and the second support slider 321. The first replacement guide rail 31 and the second replacement guide rail 32 are respectively fixedly provided with a first push rod 312 and a second push rod 322. The first push rod 312 and the second push rod 322 alternately control the magnetic switch lever 2172 provided in the graphite paper winding working unit 21 and the graphite paper winding spare unit 22.

[0055] In this embodiment, when the new graphite paper wound on the graphite paper reserve roll 213 is used up, the first conveying guide rail 51 drives the second conveying guide rail 61 to move to be flush with the first replacement guide rail 31 via the L-shaped guide rail support plate 52. At this time, the moving slider 62 is magnetically connected to the entire graphite paper winding working unit 21, including the magnetic switch base 217. The moving slider 62 drives the graphite paper winding working unit 21 from the second conveying guide rail 61 to the first replacement guide rail 31. The graphite paper winding working unit 21 is slidably connected to the first support slider 311 fixedly installed on the first replacement guide rail 31 via the support slide groove 2173. The first support slider 311 is used to support the graphite paper winding working unit 21, such as... Figure 2 As shown. At this time, the first push rod 312 pushes the magnetic switch lever 2172 to disconnect the magnetic connection between the graphite paper winding unit 21 and the moving slider 62. The moving slider 62 moves back to the second conveying guide rail 61, and the graphite paper winding unit 21 remains on the first replacement guide rail 31. Next, the first conveying guide rail 51, through the L-shaped guide rail support plate 52, drives the second conveying guide rail 61 to move until it is flush with the second replacement guide rail 32. The moving slider 62 moves from the second conveying guide rail 61 to the second replacement guide rail 32 and is placed directly below the magnetic switch base 217 where the graphite paper winding spare unit 22 is fixedly installed. At this time, the second push rod 322 pushes the magnetic switch lever 2172 to make the graphite paper winding spare unit 22 magnetically connected to the moving slider 62. Next, the moving slider 62 and the graphite paper winding spare unit 22 return together to the second conveying guide rail 61 and participate in the next cycle of graphite paper pressing work with the assistance of the first conveying module 5. The magnetic switch base enables rapid connection and separation between the working unit and the conveying module. Combined with the dual-rail replacement module and push rod control system, it realizes automatic and rapid switching between the graphite paper winding working unit and the standby unit, ensuring the continuity of production.

[0056] 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 graphite paper automatic pressing and replacing device, comprising a sintering platform (1), the sintering platform (1) comprises a sintering mold (11), characterized in that, It also includes graphite paper winding module (2), graphite paper group replacement module (3), graphite paper hollow punch module (4) and conveying mechanism; The graphite paper winding module (2) includes graphite paper winding working unit (21) and graphite paper winding standby unit (22), the graphite paper winding working unit (21) includes graphite paper recovery winding drum (212) for conveying new graphite paper (211) between graphite paper hollow punch module (4) and sintering mold (11); The graphite paper hollow punch module (4) includes hollow punch (41) for punching fixed specification graphite paper sheet and graphite paper push rod (42) for pressing graphite paper sheet to sintering mold (11) to set depth; When the graphite paper (211) in the graphite paper winding working unit (21) is used up, the conveying mechanism will convey the graphite paper winding working unit (21) to the graphite paper group replacement module (3) for replacement; The reset spring (43) is fixedly connected with the hollow punch (41) and the graphite paper push rod (42) at both ends, and the reset spring (43) transmits the pressing force output by the graphite paper push rod (42) to the hollow punch (41). The graphite paper winding working unit (21) includes graphite paper storage winding drum (213), guide roller (214), first L-shaped support base (215) and second L-shaped support base (216); 2. The automatic graphite paper pressing and replacing device according to claim 1, characterized in that, The first L-shaped support base (215) supports the graphite paper storage winding drum (213), and the first L-shaped support base (215) is fixedly connected with a magnetic switch base (217) at the bottom; The second L-shaped support base (216) supports the graphite paper recovery winding drum (212) and the guide roller (214), and the second L-shaped support base (216) is fixedly connected with the first L-shaped support base (215); The graphite paper storage winding drum (213) provides new graphite paper (211) to the graphite paper recovery winding drum (212) through the guiding action of the guide roller (214). The graphite paper group replacement module (3) includes first replacement guide rail (31) and second replacement guide rail (32); 3. The automatic graphite paper pressing and replacing device according to claim 2, characterized in that, The first replacement guide rail (31) and the second replacement guide rail (32) are fixedly provided with first support sliding block (311) and second support sliding block (321) respectively; The first support sliding block (311) and the second support sliding block (321) alternately receive the graphite paper winding working unit (21) and the graphite paper winding standby unit (22). The conveying mechanism includes first conveying module (5) and second conveying module (6), and the graphite paper winding working unit (21) is magnetically connected with the second conveying module (6) through the magnetic switch base (217).

4. The automatic graphite paper pressing and replacing device according to claim 3, characterized in that, The first conveying module (5) includes first conveying guide rail (51) and L-shaped guide rail support plate (52) arranged on the first conveying guide rail (51).

5. The automatic graphite paper pressing and replacing device according to claim 4, characterized in that, The second conveying module (6) includes second conveying guide rail (61) fixedly connected with the L-shaped guide rail support plate (52).

6. The automatic graphite paper pressing and replacing device according to claim 5, characterized in that, ​ 7. The automatic graphite paper pressing and replacing device according to claim 6, characterized in that, The second conveying module (6) further comprises a moving slider (62) which moves laterally along the second conveying rail (61), the first replacement rail (31) and the second replacement rail (32).

8. The automatic graphite paper pressing and replacing device according to claim 7, characterized in that, The magnetic switch base (217) comprises a fixed platform (2171), a magnetic switch lever (2172) and a support sliding groove (2173). The upper surface of the fixed platform (2171) is fixedly connected with the first L-shaped support base (215), and the lower surface is magnetically connected with the moving slider (62) through output magnetic force. The magnetic switch lever (2172) controls whether the lower surface of the fixed platform (2171) has magnetic force. The support sliding groove (2173) is slidably connected with the first support slider (311) and the second support slider (321).

9. The automatic graphite paper pressing and replacing device according to claim 8, characterized in that, The first replacement rail (31) and the second replacement rail (32) are respectively fixedly provided with a first push rod (312) and a second push rod (322). The first push rod (312) and the second push rod (322) alternately control the graphite paper roll collecting working unit (21) and the magnetic switch lever (2172).

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