Supporting-point-free tool and graphite piece coating method applying same

Abstract

The invention relates to the technical field of graphite piece coating tools, in particular to a supporting-point-free tool and a graphite piece coating method applying the supporting-point-free tool. The supporting-point-free tool comprises a machining platform, a rotatable fixing plate is arranged on the machining platform, and three first connecting arms are arranged on the peripheral side of the fixing plate; a movable plate capable of vertically moving in the axis direction of the fixed plate is further arranged in the middle of the fixed plate, and three second connecting arms are arranged on the outer side of the movable plate. According to the graphite piece coating device, by arranging the fixing plate capable of rotating, when a graphite piece is placed on the fixing plate, the graphite piece can be coated without dead angles through rotation of the fixing plate, and the coating thickness of the graphite piece is more uniform; the movable plate capable of being separated from the fixed plate is arranged on the fixed plate, when the movable plate ascends and drives the graphite piece to synchronously ascend, the bottom end face of the graphite piece is separated from the connecting arm on the fixed plate, then vapor deposition can be carried out on a separation point, and graphite of a supporting point on the connecting arm and the graphite piece cannot be exposed.

Description

Technical Field

[0001] The invention relates to the technical field of graphite part coating tooling, and in particular to a tooling without supporting points and a graphite part coating method using the tooling. Background Art

[0002] Graphite and carbon products have excellent performance and are increasingly widely used. Their production capacity and benefits are growing rapidly. However, because carbon atoms in graphite carbon products are very easy to combine with oxygen atoms for oxidation or reaction at high temperatures to generate other substances, they have a great impact on the structure, use, characteristics and other properties of the material. Therefore, it is necessary to maintain the sealing of graphite at high temperatures to prevent high-temperature air oxygen from diffusing into graphite, which requires high-temperature graphite anti-oxidation coatings for protection.

[0003] In the prior art, there is a Chinese utility model patent with announcement number CN218083313U and patent name "A tool for depositing surface coating on a graphite cover plate", which specifically discloses a support seat for supporting the front side of the graphite cover plate and a graphite cover for shielding the back side of the graphite cover plate. The support seat is evenly arranged along the circumference, and the support seat includes a graphite base and graphite support pins. The graphite support pins are placed at the upper end of the graphite base to support the graphite cover plate.

[0004] The above scheme can ensure that the deposition of the coating surface is dense and uniform when depositing the pyrolytic carbon coating on the graphite cover plate, and can also ensure that the roughened surface is protected from contamination by the coating and process gas, thereby solving the problem of damage and contamination to the product and coating caused by secondary sandblasting, reducing costs and greatly improving the processing efficiency of the finished graphite cover plate.

[0005] However, in the actual vapor deposition process, there will be certain contact points between the graphite support pins used to support the graphite cover plate to be vapor deposited and the graphite cover plate, and the contact points will cause the contact parts to not be vapor deposited, so that the graphite will be exposed at the contact points and the graphite will be exposed to the air environment. The graphite will react with oxygen and affect the quality of the graphite parts.

[0006] Therefore, a tooling without supporting points is proposed to solve the above-mentioned problems. Summary of the invention

[0007] Technical issues solved

[0008] In view of the above-mentioned shortcomings of the prior art, the present invention provides a support point-free tooling, which can effectively solve the problem that the vapor deposition method in the prior art causes uneven vapor deposition of graphite parts and thus deteriorates in quality.

[0009] Technical Solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0011] The present invention provides a support point-free tooling, comprising a processing platform, wherein a rotatable fixed plate is arranged on the processing platform, three first connecting arms are arranged on the outer peripheral side of the fixed plate, a movable plate which can be vertically moved along its axial direction is also arranged in the middle of the fixed plate, and three second connecting arms are arranged on the outer side of the movable plate; wherein at least one supporting cone is detachably provided at the upper end of the first connecting arm and the second connecting arm respectively, and the plurality of supporting cones on the first connecting arm and the second connecting arm are arranged in a circle.

[0012] Furthermore, the top end of the supporting cone is prismatic or dot-shaped.

[0013] Furthermore, a clamping column is provided at the bottom end of the support cone, and a plurality of first clamping holes for clamping the clamping column are provided at the upper ends of the first connecting arm and the second connecting arm, and the plurality of first clamping holes are distributed at intervals along the extension direction of the connecting arm.

[0014] Furthermore, the support cone comprises an extension arm, which is vertically arranged on the side end surface of the support cone and is detachably arranged with the support cone.

[0015] Furthermore, a plurality of second clamping holes for clamping the extension arm are provided on the side end surface of the extension arm, and the plurality of second clamping holes are arranged at intervals along the height direction of the support cone.

[0016] Furthermore, the extension arm may be provided with a detachable support column, and a plurality of third clamping holes clamped with the upper end of the support column are provided on the extension arm, and the lower end of the support column is clamped with the first clamping hole.

[0017] Furthermore, the support column is formed by a plurality of support blocks connected in an upper and lower manner, and a lower end of one side of the support block is provided with a recessed opening for easy grasping.

[0018] Furthermore, a groove is provided in the middle of the fixed plate, and the groove is engaged with at least one second connecting arm on the movable plate.

[0019] Furthermore, when the top end of the supporting cone is prismatic, a scraping groove is provided at the top end of the supporting cone along the direction of the rib at the top end of the supporting cone, and a scraping member that can move linearly or vertically in the scraping groove is provided in the scraping groove; when the top end of the supporting cone is point-shaped, a scraping member that can move vertically in the scraping groove is provided in the scraping groove.

[0020] This solution also proposes a coating method for graphite parts, which is applied to the above-mentioned tooling without support points, and includes the following steps:

[0021] Step 1: placing the graphite part to be coated on the support cone located on the first connecting arm and the second connecting arm;

[0022] Step 2: Rotate the fixed plate to perform vapor deposition on the graphite part;

[0023] Step 3: driving the movable plate to rise, so that the graphite piece is separated from the first connecting arm on the fixed plate, and at this time, vapor deposition is performed on the contact point between the lower end surface of the graphite piece and the supporting cone on the first connecting arm;

[0024] Step 4: The movable plate is driven downward, and when the lower end surface of the graphite piece and the supporting cone on the first connecting arm are separated, vapor deposition is performed on the contact point between the lower end surface of the graphite piece and the upper supporting cone.

[0025] Beneficial Effects

[0026] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0027] The present invention provides a rotatable fixing plate. When a graphite piece is placed on the fixing plate, the fixing plate can be rotated to coat the graphite piece without dead angles, and the coating thickness of the graphite piece is more uniform.

[0028] By arranging a movable plate that can be separated from the fixed plate on the fixed plate, when the movable plate rises and brings the graphite piece up synchronously, the bottom end surface of the graphite piece and the connecting arm on the fixed plate are separated, and then vapor deposition can be performed on the separation point, without exposing the graphite at the connecting arm and the supporting point on the graphite piece, thereby improving the coating quality and making the appearance of the graphite piece more beautiful;

[0029] The support cone can be adjusted to accommodate graphite parts of various sizes, and can be used as a universal tooling for most graphite parts.

[0030] By selecting support cones of different numbers and setting positions, multiple graphite parts can be supported at the same time, thereby improving the vapor deposition efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention 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 of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a structural schematic diagram of a fixed plate and a movable plate in an embodiment of the present invention in a fitted state;

[0033] Figure 2 It is a structural schematic diagram of a fixed plate and a movable plate in a separated state in an embodiment of the present invention;

[0034] Figure 3 is a schematic diagram of the support edge insertion structure in an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of the supporting rib assembly structure in an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of the supporting rib structure in an embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the exploded structure of the fixed plate and the movable plate in an embodiment of the present invention;

[0038] Figure 7 It is a schematic diagram of the assembly structure of the extension arm in an embodiment of the present invention;

[0039] Figure 8 is a schematic diagram of a notch structure in an embodiment of the present invention;

[0040] Fig. 9 The supporting cone in the embodiment of the present invention is a schematic diagram of a prismatic shape;

[0041] Fig.10 This is a schematic diagram of a structure in which the supporting cone in an embodiment of the present invention is prismatic and has grooves on the prismatic surface;

[0042] Fig.11 The supporting cone in the embodiment of the present invention is a schematic diagram of a conical structure.

[0043] The numbers in the figure represent respectively: 1. processing platform; 10. first clamping hole; 11. second clamping hole; 12. turntable; 121. limit hole; 122. telescopic push rod; 123. fixed plate; 2. fixed plate; 20. first connecting arm; 21. groove; 211. notch; 3. movable plate; 30. second connecting arm; 4. supporting cone; 41. clamping column; 42. extension arm; 421. supporting column; 422. third clamping hole; 423. clamping hole; 43. scraping groove; 44. scraping member. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above, obliquely above, or on the surface of the second feature, the second feature being supported and fixed by the first feature, or simply indicating that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0048] The present invention will be further described below in conjunction with the embodiments.

[0049] Example:

[0050] See attached Figure 1-11 , this embodiment proposes a tooling without support points.

[0051] The processing platform 1 comprises a turntable 12 which is rotatably mounted on the processing platform 1 and a fixing plate 2 which is detachably connected to the bottom end of the fixing plate 2 and the turntable 12.

[0052] Specifically, a plurality of limiting holes 121 are provided at the upper end of the turntable 12, and a locking pin that can be inserted into the limiting holes 121 is provided on the bottom end surface of the fixed plate 2 at a position corresponding to the limiting holes 121. When processing is required, the fixed plate 2 can be installed on the turntable 12, and the fixed plate 2 can be rotated by rotating the turntable 12.

[0053] A movable plate 3 which can be vertically moved along its axial direction is also provided in the middle of the fixed plate 2. Specifically, a telescopic push rod 122 is fixed at the lower end of the processing platform 1. The output shaft end of the telescopic push rod 122 passes through the middle of the turntable 12 and is connected to a fixed plate 123. A circular cavity for abutting the fixed plate 123 is provided at the bottom end of the movable plate 3. The shapes of the cavity and the fixed plate 123 are not specifically limited, and can be circular or non-circular. A circular shape is adopted in this case.

[0054] When the turntable 12 rotates, it drives the fixed plate 2 and the movable plate 3 to rotate synchronously. It should be noted that in this case, a rectangular groove 21 is opened in the middle of the fixed plate 2, and a rectangular outline matching the shape of the groove 21 is provided in the middle of the movable plate 3 and extends downward and is stuck in the groove 21. The cavity opened at the bottom end of the movable plate 3 is opened on the rectangular outline.

[0055] Three first connecting arms 20 are arranged on the outer peripheral side of the fixed plate 2, and three second connecting arms 30 are arranged on the outer side of the movable plate 3. Notches 211 are arranged at the positions of the grooves 21 corresponding to the second connecting arms 30. When the movable plate 3 is completely embedded in the fixed plate 2, the second connecting arms 30 are just located at the notches 211. Optionally, the groove 21 is engaged with at least one second connecting arm 30 on the movable plate 3.

[0056] At least one supporting cone 4 is detachably provided at the upper end of the first connecting arm 20 and the second connecting arm 30 , respectively, and the plurality of supporting cones 3 on the first connecting arm 20 and the second connecting arm 30 are arranged in a circle.

[0057] In this embodiment, the support cones 4 are used to place the graphite piece to be vapor deposited. Before processing, the graphite piece is first placed above a plurality of support cones 4, and the entire graphite piece is vapor deposited by rotating the fixing plate 2.

[0058] It should be noted that this solution can be applied to graphite parts of various sizes and can be used as a universal tooling for most coated parts. In addition, the height and setting position of the support ribs can be selected accordingly according to the size of the graphite parts. Figure 3 As shown in FIG. 1 , there are supporting edges 4 with a smaller volume and supporting edges 4 with a certain height.

[0059] After the vapor deposition is completed, the rotation of the fixed plate 2 is stopped, and the movable plate 3 is driven to rise until the rectangular outline in the middle of the movable plate 3 is completely separated from the groove 21. At this time, the second connecting arm 30 on the movable plate 3 will support the graphite part and rise synchronously. At this time, the contact area between the lower end face of the graphite part and the top of the first connecting arm 20 will be exposed. Since the contact area between the lower end face of the graphite part and the top of the first connecting arm 20 was not vapor deposited during the previous stage of vapor deposition, it is normally necessary to perform secondary vapor deposition after the graphite part is vapor deposited. This not only makes the process cumbersome, but also causes the vapor deposition on the surface of the graphite part to be uneven, affecting the appearance.

[0060] In this embodiment, when the movable plate 3 rises, after the vapor deposition process of the contact point between the first connecting arm 21 and the lower end surface of the graphite piece is completed, the movable plate 3 is driven to move downward.

[0061] It is worth noting that the thickness of the second connecting arm 31 in the present case is smaller than the height of the notch 211 extending from the side of the groove 21. After the vapor deposition at the contact point between the lower end of the graphite part and the first connecting arm 21 is completed, the downward movement of the movable plate 3 will increase slightly until the second connecting arm 31 on the movable plate 3 completes the contact with the fixed part 2. Since the height of the support cone 4 on the first connecting arm 21 is higher than the height of the support cone 4 on the second connecting arm 31 at this time, the graphite part will stay on the support cone 4 on the first connecting arm 21. At this time, vapor deposition is performed on the contact point between the support cone 4 on the second connecting arm 31 and the graphite part to complete the vapor deposition process of the entire graphite part.

[0062] That is, in the initial vapor deposition stage, the upper end planes of the fixed plate 2 and the movable plate 3 are on the same horizontal plane, and after the movable plate 3 moves downward, the upper end of the movable plate 3 is at a lower level than the upper end of the fixed plate 2.

[0063] In order to reduce the contact area between the top end of the support cone 4 and the graphite piece, the top end of the support cone 4 in this embodiment is prismatic or dot-shaped.

[0064] The support cone 4 and the connecting arm are detachably connected, and a clamping column 41 is provided at the bottom end of the support cone 4. The upper ends of the first connecting arm 20 and the second connecting arm 30 are provided with a plurality of first clamping holes 10 for clamping the clamping column 41. The plurality of first clamping holes 10 are spaced apart along the extension direction of the connecting arm.

[0065] This embodiment can also support simultaneous vapor deposition of multiple graphite parts. Specifically, the support cone 4 includes an extension arm 42 . The extension arm 42 is vertically disposed on the side end surface of the support cone 4 and is detachable from the support cone 4 .

[0066] A plurality of second clamping holes 11 for clamping the extension arm 42 are provided on the side end surface of the extension arm 42 , and the plurality of second clamping holes 11 are arranged at intervals along the height direction of the support cone 4 .

[0067] In order to improve the fixing strength of the extension arm 42 and prevent the extension arm 42 from bending under force, in this embodiment, a support column 421 is also removable on the extension arm 42, and a plurality of third clamping holes 422 are provided on the extension arm 42 to be clamped with the upper end of the support column 421, and the lower end of the support column 421 is clamped with the first clamping hole 10.

[0068] The support column 421 is formed by a plurality of support blocks 422 connected up and down. The stacking quantity of the support blocks 422 can be flexibly adjusted according to the height of the extension arm 42 at this time. It is worth mentioning that the height of the support block 422 is equal to the distance between adjacent second clamping holes 11.

[0069] A lower end of one side of the support block 422 is concavely provided with a clamping opening 423 for easy grasping, so as to facilitate the disassembly and assembly of the support block 422 .

[0070] Furthermore, after vapor deposition, some coatings will inevitably adhere to the contact area between the support cone 4 and the graphite part. These coatings will adhere to the support cone 4, and the degree of adhesion of each support cone 4 is different. If it is not cleaned, it will cause the subsequent graphite parts to be in a skewed state when placed. In this embodiment, a solution is proposed.

[0071] When the top of the support cone 4 is prismatic, a scraping groove 43 is provided at the top of the support cone 4 along the direction of the ridge of the top of the support cone 4. A scraping member 44 is provided in the scraping groove 43 and can move linearly or vertically in the scraping groove 43. When vapor deposition is performed, the top of the scraping member 44 serves as the upper end surface of the support cone 4. After the vapor deposition is completed, the scraping member 44 can be moved horizontally to the left or right or up and down to clean the adhered paint.

[0072] In addition, optionally, when the top end of the support cone 4 is prismatic, in order to reduce the contact area with the graphite piece, a plurality of slots arranged at intervals are opened on the top end of the support cone 4 .

[0073] When the top of the supporting cone 4 is in a dot shape, the scraping groove 43 is vertically arranged, and a scraping member 44 which can move vertically in the scraping groove 43 is arranged in the scraping groove 43 . The scraping member 44 is now in a columnar shape and moves up and down in the scraping groove 43 .

[0074] This embodiment also provides a coating method for graphite parts, which is applied to the above-mentioned tooling without support points, and includes the following steps:

[0075] Step 1: placing the graphite part to be coated on the support cone 4 located on the first connecting arm 20 and the second connecting arm 30;

[0076] Step 2: rotating the fixed plate 2 to perform vapor deposition on the graphite part;

[0077] Step 3: driving the movable plate 3 to rise, so that the graphite piece is separated from the first connecting arm 20 on the fixed plate 2, and at this time, vapor deposition is performed on the lower end surface of the graphite piece;

[0078] Step 4: The movable plate 3 is driven to move downward, and when the lower end surface of the graphite piece and the support cone 4 on the first connecting arm 20 are separated, vapor deposition is performed on the contact point between the lower end surface of the graphite piece and the upper support cone 4.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tool without supporting points, comprising a processing platform (1), characterized in that: The processing platform (1) is provided with a rotatable fixed plate (2), three first connecting arms (20) are provided on the outer peripheral side of the fixed plate (2), a movable plate (3) which can be vertically moved along the axial direction thereof is also provided in the middle of the fixed plate (2), and three second connecting arms (30) are provided on the outer side of the movable plate (3); Wherein, at least one support cone (4) is detachably provided at the upper end of each of the first connecting arm (20) and the second connecting arm (30), and the plurality of support cones (3) on the first connecting arm (20) and the second connecting arm (30) are arranged in a circular pattern.

2. A tool without supporting points according to claim 1, characterized in that: The top end of the supporting cone (4) is ridge-shaped or point-shaped.

3. A tooling without supporting points according to claim 2, characterized in that: A clamping column (41) is provided at the bottom end of the support cone (4), and a plurality of first clamping holes (10) for clamping the clamping column (41) are provided at the upper ends of the first connecting arm (20) and the second connecting arm (30), wherein the plurality of first clamping holes (10) are distributed at intervals along the extension direction of the connecting arms.

4. A tool without supporting points according to claim 3, characterized in that: The support cone (4) comprises an extension arm (42), wherein the extension arm (42) is vertically arranged on a side end surface of the support cone (4) and is detachably arranged from the support cone (4).

5. The tooling without supporting points according to claim 4, characterized in that: A plurality of second clamping holes (11) for clamping the extension arm (42) are provided on the side end surface of the extension arm (42), and the plurality of second clamping holes (11) are arranged at intervals along the height direction of the support cone (4).

6. A tooling without supporting points according to claim 5, characterized in that: The extension arm (42) is also provided with a detachable support column (421), a plurality of third clamping holes (422) clamped with the upper end of the support column (421) are provided on the extension arm (42), and the lower end of the support column (421) is clamped with the first clamping hole (10).

7. The tooling without supporting points according to claim 6, characterized in that: The support column (421) is formed by a plurality of support blocks (422) connected in an upper and lower manner, and a lower end of one side of the support block (422) is provided with a snap-on opening (423) that is concave inwards and is convenient for holding.

8. A tool without supporting points according to any one of claims 2 to 7, characterized in that: A groove (21) is provided in the middle of the fixed plate (2), and the groove (21) is engaged with at least one second connecting arm (30) on the movable plate (3).

9. A tool without supporting points according to claim 8, characterized in that: When the top end of the support cone (4) is prismatic, a scraping groove (43) is provided at the top end of the support cone (4) along the direction of the ridge of the top end of the support cone (4), and a scraping member (44) is provided in the scraping groove (43) and can move linearly or vertically in the scraping groove (43); When the top end of the supporting cone (4) is in a dot shape, a scraping member (44) capable of vertically moving in the scraping groove (43) is provided in the scraping groove (43).

10. A coating method for graphite parts, applied to a support-free tooling as claimed in any one of claims 1 to 9, characterized in that: The steps include: Step 1: placing a graphite part to be coated on a support cone (4) located on a first connecting arm (20) and a second connecting arm (30); Step 2: rotating the fixed plate (2) to perform vapor deposition on the graphite part; Step 3: driving the movable plate (3) to rise so that the graphite piece is separated from the first connecting arm (20) on the fixed plate (2), and at this time, vapor deposition is performed on the lower end surface of the graphite piece; Step 4: The movable plate (3) is driven to move downward, and when the lower end surface of the graphite piece and the support cone (4) on the first connecting arm (20) are separated, vapor deposition is performed on the contact point between the lower end surface of the graphite piece and the upper support cone (4).

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