Assembly type graphite sagger

Abstract

The utility model discloses an assembly type graphite sagger which comprises a rectangular bottom plate and four rectangular side plates, the peripheral edge of the bottom plate is concavely provided with a step part, and the step part comprises a first plane, a second plane and a vertical retaining wall for connecting the first plane and the second plane. The four corners of the bottom plate are each provided with a right-angle-shaped chamfer, the height of the outer side wall of each chamfer is larger than that of the second plane, and each chamfer and the step portion where the chamfer is located form a positioning groove. Four rectangular side plates are respectively arranged on the step parts and limited in the positioning grooves, adjacent side plates are fixed through bolts, and the side plates and the bottom plate are fixed through bolts. The side plates are limited through the step parts at the edges of the bottom plate and the chamfers at the corner positions, the utilization rate of the internal space is high, meanwhile, powder leakage can be prevented, and the sealing performance is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy, and in particular relates to an assembled graphite sagger. Background Art

[0002] Graphite sagger is a bowl-shaped container made of graphite material, which has good thermal conductivity and high temperature resistance. In the sintering process of lithium iron phosphate and lithium battery negative electrode materials, the chemical properties of lithium iron phosphate itself and the high temperature required for the sintering of the two materials are difficult for common materials to bear. Therefore, graphite, as a relatively cheap material, plays an irreplaceable role in this field. Graphite saggers in the prior art are divided into two types: one-piece and spliced. The one-piece graphite sagger is a whole piece of graphite selected according to the outline size of the graphite sagger, and the whole piece of graphite is cut on this basis. A large amount of cutting of the parent material is required, and the processing time is long, the workload is large, and the parent material loss rate is high. Once damage or cutting errors occur, the whole bowl needs to be scrapped. The physical properties of graphite materials determine that it is difficult to process using additive manufacturing, so the cost is relatively high. The existing spliced ​​saggers are connected to each other by arranging convex strips on various plates, and corresponding threaded holes are provided on the convex strips. Since the bosses and the side plates need to be formed in one piece, a large amount of material still needs to be cut from each parent material to process a side plate, which does not fundamentally solve the problem of wasting parent materials in traditional one-piece graphite saggers.

[0003] Therefore, in view of the above technical problems, it is necessary to provide an improved graphite sagger to solve the problem of material waste.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a graphite sagger, which has reduced manufacturing cost and higher parent material utilization rate.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides an assembled graphite sagger, comprising a rectangular bottom plate and four rectangular side plates, wherein the edges of the bottom plate are recessed to form a step portion, the step portion comprises a first plane and a second plane to connect the vertical retaining wall of the first plane and the second plane, the four corners of the bottom plate are respectively provided with right-angled chamfers, the outer side wall height of the chamfer is greater than the height of the second plane, and each chamfer forms a positioning groove with the step portion where the chamfer is located; the four rectangular side plates are respectively arranged on the step portions and limited in the positioning grooves, and the adjacent side plates, as well as the side plates and the bottom plate are respectively fixed by bolts.

[0007] In one or more embodiments of the present invention, an inclined guide surface is formed between each chamfer and the side edge of the bottom plate.

[0008] In one or more embodiments of the present invention, the height of the outer side wall of the chamfer is greater than the height of the first plane of the bottom plate.

[0009] In one or more embodiments of the present invention, the chamfer is integrally formed on the bottom plate.

[0010] In one or more embodiments of the present invention, adjacent side plates, and side plates and bottom plates are fixed respectively by graphite bolts.

[0011] In one or more embodiments of the present invention, the side panels include two first side panels and two second side panels that are oppositely disposed, and two ends of the second side panels are abutted between the two first side panels.

[0012] In one or more embodiments of the present invention, a plurality of first screw holes are formed on the end of the second side plate abutting against the first side plate, and a plurality of first countersunk holes coaxial with the first screw holes are formed on the second side plate.

[0013] In one or more embodiments of the present invention, grooves matching with the end portions of the second side plate are formed at both ends of the first side plate, and the width of the grooves is the same as the thickness of the second side plate.

[0014] In one or more embodiments of the present invention, a plurality of second screw holes are respectively formed on the end of each side plate in contact with the bottom plate, and a plurality of second countersunk holes respectively coaxial with the second screw holes are formed on the bottom plate.

[0015] Compared with the prior art, the graphite sagger of the utility model positions the surrounding side plates by digging positioning grooves on the bottom plate, which has fewer processing positions and lower processing costs. The interior is more regular without protruding parts, so more powder can be loaded and the space utilization rate is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of a graphite sagger in one embodiment of the utility model;

[0018] Figure 2 This is a partial disassembly diagram of a graphite sagger in one embodiment of the utility model;

[0019] Figure 3 A top view of a bottom plate in one embodiment of the utility model;

[0020] Figure 4 It is a front view of the first side plate in one embodiment of the utility model;

[0021] Figure 5 It is a side view of the second side plate in one embodiment of the utility model;

[0022] Figure 6 It is an enlarged view of the chamfer in one embodiment of the utility model;

[0023] Figure 7 The present invention is a flowchart of a method for manufacturing a graphite sagger in one embodiment of the present invention.

[0024] Description of main reference numerals:

[0025] 100-graphite sagger, 10-bottom plate, 101-first plane, 102-second plane, 103-blocking wall, 104-side, 11-positioning groove, 12-chamfer, 13-guide surface, 14-second countersunk hole, 20-side plate, 201-second screw hole, 21-first side plate, 211-first countersunk hole, 212-groove, 22-second side plate, 221-first screw hole. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] like Figure 1-6 As shown, a graphite sagger 100 in an embodiment of the utility model comprises a substantially rectangular bottom plate 10 and four rectangular side plates 20 . The four side plates 20 are arranged at the edges of the bottom plate 10 , thereby enclosing the inner space of the graphite sagger 100 .

[0028] Specifically, see Figure 6As shown, the bottom plate 10 is sunken at the edges around it, so the bottom plate 10 includes a first plane 101 located in the middle and a second plane 102 at the periphery, which are connected by a vertical retaining wall 103, and the first plane 101 is higher than the second plane 102, and the height of the second plane 102 is limited by the side 104. Therefore, at the edges around the bottom plate 10, the first plane 101, the retaining wall 103 and the second plane 102 form a step portion. At the same time, a right-angled chamfer 12 is respectively provided at each corner position on the bottom plate 10 to increase the overall rigidity. The height of the chamfer 12 is greater than the minimum height of the bottom plate 10 (that is, the height of the outer side wall of the chamfer 12 is greater than the height of the side 104), so the bottom plate 10 is formed with a right-angled positioning groove 11 (the inner side wall of the chamfer 12, the second plane 102 and the retaining wall 103) at the four corner positions, and the side plate 20 is limited between adjacent positioning grooves 11.

[0029] In this embodiment, when the side panel 20 is installed on the bottom plate 10, the bottom surface of the side panel 20 is attached to the second plane 102 of the bottom plate 10, the corner of the side panel 20 is inserted into the positioning groove 11, and the inner side surface of the bottom of the side panel 20 is attached to the retaining wall 103. After the side panel 20 is inserted into the positioning groove 11, the two adjacent side panels can be fixed with bolts, which is more convenient for the staff to operate. At the same time, the graphite sagger 100 in this embodiment can realize the fixing of the side panel 20 through the step portion and the positioning groove 11 at the edge of the bottom plate 10, so there is no need to set a reinforcement structure in the internal storage space, avoiding the occupation of the internal space. Secondly, after the side panel 20 is fixed, the design of the edge step portion can prevent the powder from leaking from the gap, and the overall sealing is high.

[0030] Preferably, the height of the chamfer 12 is greater than the maximum height of the bottom plate 10, that is, the top of the chamfer 12 is higher than the plane where the first plane 101 is located, so as to further improve the limiting and fixing effect of the side plate 20 and improve stability.

[0031] In this embodiment, the positioning groove 11 is used to provide a positioning function for the side plate 20, and during the processing, after cutting out 5 plates, it is only necessary to continue processing on the bottom plate 10. At the same time, the design of the above step portion and chamfer 12 has fewer processing steps, and the processing time and cost are lower. In addition, after the above setting and fixing, the interior of the sagger is more neat and has no other protruding parts, so it can store more powder and the internal space utilization rate is higher.

[0032] Preferably, the chamfer 12 is integrally formed on the base plate 10 , so that the chamfer 12 can be cut synchronously when the positioning groove 11 is excavated. Compared with adding similar components, the one-piece molding method in this embodiment reduces the processing steps and has higher strength.

[0033] In actual use, saggers are generally used in multiple rows and columns at the same time. The friction and collision between adjacent saggers can easily cause the right-angle edges to collapse and damage, which is not conducive to the integrity of the saggers. In addition, during the transmission process, adjacent saggers will enter the area between each other's transition angles, making it difficult to reset. To avoid this situation, Figure 3 As shown, an inclined guide surface 13 is formed between each chamfer 12 and the bottom plate 10. Figure 5 and 6 It can be seen that by providing the guide surface 13, the transition between the chamfer 12 and the side surface 104 of the bottom plate 10 is made smoother. Therefore, when the adjacent graphite saggers 100 are in contact, they can move along the guide surface 13 at the corresponding position without collision, thereby reducing the probability of damage to the chamfer 12. At the same time, the adjacent graphite saggers 100 can still move along the guide surface 13 after displacement and then reset, further reducing the probability of damage to the chamfer 12.

[0034] In this embodiment, the bolts used for assembly are also made of graphite material (such as CFC), so they are less affected by temperature, are not prone to thermal expansion and contraction, and are relatively simple to process.

[0035] like Figure 2 As shown, the side panel 20 is divided into two first side panels 21 and two second side panels 22 that are oppositely arranged, and the second side panels 22 are shorter than the first side panels 21 . When assembled, both ends of the second side panels 22 abut between the first side panels 21 .

[0036] In this embodiment, the screw hole includes two types: a common screw hole and a countersunk screw hole. Specifically, due to the different lengths, the first screw hole 221 (common screw hole) provided on the second side plate 22 is located on its side. At the same time, in order to prevent the bolt from being exposed, a first countersunk hole 211 (countersunk screw hole) is provided on the first side plate 21, and the bolt can be completely immersed in the first countersunk hole 211, so that the side of the entire graphite sagger 100 is relatively flat, and there is no protrusion, which prevents the bolt from protruding and scratching other adjacent saggers.

[0037] Preferably, grooves 212 are respectively provided at both ends of the first side panel 21, and the width of the groove 212 is the same as the thickness of the second side panel 22, so that the second side panel 22 can be positioned. When assembling, the second side panel 22 is fixed in position after being abutted against the side wall of the groove 212. At this time, the first screw hole 221 and the first countersunk hole 211 are already aligned, and the bolt can be screwed in, which is more convenient for the staff to operate.

[0038] It is easy to imagine that each side plate 20 is provided with a second screw hole 201 (ordinary screw hole) at the bottom thereof, and a second countersunk hole 14 (countersunk screw hole) is provided on the bottom plate 10 accordingly, so that the bolts used to fix the bottom plate 10 and the side plate 20 can be completely immersed in the bottom plate 10. Through the above arrangement, all the bolts used for fixing are completely immersed and will not be exposed on the surface, so the exterior of the graphite sagger 100 in this embodiment is relatively flat as a whole without protrusions.

[0039] like Figure 6 As shown, an embodiment of the utility model provides a method for manufacturing a graphite sagger 100, which mainly includes the following steps:

[0040] S1. Provide a graphite blank, and cut a bottom plate and four side plates from the graphite blank.

[0041] Specifically, the corresponding bottom plate 10 and side plates 20 are cut out from the graphite base material according to the preset shapes and sizes.

[0042] S2, cutting out the positioning grooves on the edges of the cut bottom plate.

[0043] Specifically, corresponding positioning grooves 11 are cut on the four edges of the bottom plate 10 according to the thickness of the side plate 20 .

[0044] S3. Insert the four side panels into the positioning grooves around the bottom panel respectively, and open matching screw holes on the side panels and the bottom panel, as well as between adjacent side panels.

[0045] Specifically, after the four side panels 20 are respectively inserted into the positioning grooves 11 at their corresponding positions, a first countersunk hole 211 and a second countersunk hole 14 are respectively dug on the first side panel 21 and the bottom panel 10, a first screw hole 221 is dug on the second side panel 22, and a second screw hole 201 is dug at the bottom of all the side panels 20.

[0046] S4. Insert bolts into all pairs of screw holes to secure the side panels to the bottom panel, and secure the adjacent side panels.

[0047] Specifically, graphite bolts are screwed into all pairs of screw holes (the first countersunk hole 211 and the first screw hole 221 , the second countersunk hole 14 and the second screw hole 201 ) to fix the adjacent first side plate 21 and the second side plate 22 , as well as all the side plates 20 and the bottom plate 10 .

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An assembled graphite sagger, characterized in that: include: A rectangular bottom plate, wherein the edges of the bottom plate are concavely formed with a step portion, wherein the step portion includes a first plane, a second plane and a vertical retaining wall connecting the first plane and the second plane, and the four corners of the bottom plate are respectively provided with right-angled chamfers, wherein the height of the outer side wall of the chamfer is greater than the height of the second plane, and each chamfer forms a positioning groove with the step portion where the chamfer is located; Four rectangular side plates are respectively arranged on the step portions and confined in the positioning grooves. Adjacent side plates, and the side plates and the bottom plate are fixed by bolts respectively.

2. The assembled graphite sagger according to claim 1, characterized in that: An inclined guide surface is formed between each chamfer and the side edge of the bottom plate.

3. The assembled graphite sagger according to claim 1, characterized in that: The height of the outer side wall of the chamfer is greater than the height of the first plane of the bottom plate.

4. The assembled graphite sagger according to claim 1, characterized in that: The chamfer is integrally formed on the bottom plate.

5. The assembled graphite sagger according to claim 1, characterized in that: The adjacent side plates, and the side plates and the bottom plate are fixed respectively by graphite bolts.

6. The assembled graphite sagger according to claim 5, characterized in that: The side plate comprises two first side plates and two second side plates which are arranged opposite to each other, and two ends of the second side plates are abutted between the two first side plates.

7. The assembled graphite sagger according to claim 6, characterized in that: A plurality of first screw holes are formed on the end of the second side plate abutting against the first side plate, and a plurality of first countersunk holes coaxial with the first screw holes are formed on the second side plate.

8. The assembled graphite sagger according to claim 7, characterized in that: Grooves matching with the ends of the second side plate are formed at both ends of the first side plate, and the width of the grooves is the same as the thickness of the second side plate.

9. The assembled graphite sagger according to claim 8, characterized in that: A plurality of second screw holes are respectively formed at the end of each side plate in contact with the bottom plate, and a plurality of second countersunk holes respectively coaxial with the second screw holes are formed on the bottom plate.

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