Protective tool and spraying device
By designing protective fixtures and using interlocking structures and seals to precisely mask the valve plate shaft workpiece, the problems of low tape adhesion efficiency and poor precision in existing technologies are solved, achieving efficient and precise spraying results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BGRIMM ADVANCED MATERIALS SCI & TECH CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, when using high-temperature resistant tape to protect the parts of parts that do not need to be sprayed, the operation efficiency is low, the adhesion accuracy is difficult to guarantee, and the spraying effect is affected.
A protective fixture was designed, including a first shielding component and a second shielding component. It achieves precise shielding of the valve plate shaft workpiece through a snap-fit structure and a sealing component, ensuring that the surface to be protected is completely covered. Metal materials such as aluminum alloy are used to improve sealing performance and accuracy.
It improves the coating effect and precision, reduces thermal shock and dust ingress, improves coating quality, and is simple and efficient to install, suitable for valve plate shafts of various specifications.
Smart Images
Figure CN224280417U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thermal spraying technology, and more particularly to a protective tooling and spraying device. Background Technology
[0002] With the continuous operation of the robotic arm, the spraying method of moving the spray gun will make the overall coating on the surface of the parts uniform, making it difficult to achieve the intermittent coating of the parts. Therefore, it is necessary to protect the surface parts of the parts that do not need to be coated to ensure that the sprayed parts of the workpiece can meet the requirements of precise control.
[0003] Currently, the main method for protecting components that require intermittent spraying is to apply high-temperature resistant tape to the areas to be protected. This method is inefficient, has difficulty in ensuring adhesion accuracy, and is prone to dimensional deviations that affect the spraying effect. Utility Model Content
[0004] In view of this, this application provides a protective tooling and spraying device, which aims to solve one of the technical problems in the prior art.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] In a first aspect, this application provides a protective tooling for spray coating protection of valve plate shaft workpieces, comprising:
[0007] The first shielding component includes a first enclosure wall and a first side wall. The first enclosure wall surrounds the periphery of the first side wall and is connected to the first side wall. The first side wall is provided with a first through hole.
[0008] The second shielding component includes a second enclosure and a second sidewall. The second enclosure is disposed around the periphery of the second sidewall and connected to the second sidewall. The second sidewall has a second through hole. The end of the first enclosure away from the first sidewall and the end of the second enclosure away from the second sidewall are sealed together.
[0009] In an optional embodiment, the first enclosure wall is provided with a first engaging structure at the end away from the first side wall, and the second enclosure wall is provided with a second engaging structure at the end away from the second side wall, and the first engaging structure and the second engaging structure are connected in cooperation.
[0010] In an optional embodiment, the protective tooling further includes a first sealing element, which is disposed at the connection between the first enclosure and the second enclosure;
[0011] And / or, the protective fixture further includes two second seals, which are disposed at the first through hole or the second through hole.
[0012] In an optional embodiment, the protective fixture is further provided with a plurality of overlapping holes, which are disposed on the first enclosure and the second enclosure. The protective fixture also includes a plurality of fasteners, with one fastener corresponding to one of the overlapping holes.
[0013] In an optional embodiment, the stacked hole includes a first hole segment and a second hole segment. The first hole segment is a through hole provided in the first enclosure wall, and the second hole segment is a blind hole provided in the second enclosure wall. The protective tooling also includes a plurality of baffles. One baffle is removably provided in one of the stacked holes. The baffle is provided in the enclosure wall and is located at the end of the first hole segment away from the second hole segment.
[0014] In an optional embodiment, a first groove is provided on the side of the first sidewall near the first enclosure wall, and the first groove communicates with the first through hole;
[0015] A second groove is provided on the side of the second sidewall near the second enclosure wall, and the second groove communicates with the second through hole.
[0016] In an optional embodiment, the cross-sections of the first enclosure, the first sidewall, the first groove, the second enclosure, the second sidewall, and the second groove are circular.
[0017] In an optional embodiment, the inner diameter of the first enclosure is D1, the inner diameter of the first groove is D2, and the diameter of the first through hole is D3, satisfying: 0.45≤D2 / D1≤0.55; 0.2≤D3 / D2≤0.3.
[0018] In an optional embodiment, the inner diameter of the second enclosure is D4, the inner diameter of the second groove is D5, and the diameter of the second through hole is D6, satisfying: 0.45≤D5 / D4≤0.55; 0.2≤D6 / D5≤0.3.
[0019] Secondly, this application provides a spraying apparatus, including the protective fixture described in any of the foregoing embodiments.
[0020] Compared to existing technologies, the beneficial effects of this application are as follows: This application proposes a protective fixture, including a first shielding member and a second shielding member. The first shielding member includes a first enclosure wall and a first side wall. The first enclosure wall surrounds the periphery of the first side wall and is connected to the first side wall. The first side wall has a first through hole. The second shielding member includes a second enclosure wall and a second side wall. The second enclosure wall surrounds the periphery of the second side wall and is connected to the second side wall. The second side wall has a second through hole. The end of the first enclosure wall away from the first side wall and the end of the second enclosure wall away from the second side wall are sealed together. This allows the portion of the valve plate shaft workpiece that needs to be shielded to be completely contained within the protective fixture, and the surface to be protected is completely covered by the protective fixture. It provides high dimensional accuracy for the portion of the valve plate shaft that needs to be shielded, improving the spraying effect and spraying accuracy of the valve plate shaft. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 The following are schematic diagrams illustrating the structure of the valve plate shaft in some embodiments of this application;
[0023] Figure 2 The diagram shows the assembly structure of the protective tooling and valve plate shaft in some embodiments of this application;
[0024] Figure 3 It shows Figure 2 Schematic diagram of the cross-sectional structure at point AA;
[0025] Figure 4 A schematic cross-sectional view of the first shielding member in some embodiments of this application is shown;
[0026] Figure 5 A cross-sectional structural schematic diagram of the second shielding member in some embodiments of this application is shown.
[0027] Explanation of main component symbols: 200-valve plate shaft; 100-protective fixture; 110-first shielding component; 111-first side wall; 1111-first through hole; 1112-first groove; 112-first enclosure wall; 1121-first engaging structure; 120-second shielding component; 121-second side wall; 1211-second through hole; 1212-second groove; 122-second enclosure wall; 1221-second engaging structure; 130-overlapping hole; 131-first hole segment; 132-second hole segment; 140-fastener. Detailed Implementation
[0028] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0033] The valve plate shaft is used to drive the valve plate to rotate. For example... Figure 1 As shown, the surfaces of the two long shafts on both sides of the valve plate shaft need to be sprayed, while the short shaft in the middle of the two long shafts does not need to be sprayed. In the prior art, the spraying method of moving the spray gun will make the overall coating of the part surface uniform, making it difficult to achieve the intermittent coating of the part. Therefore, it is necessary to protect the surface parts of the part that do not need to be coated to ensure that the sprayed parts of the workpiece can meet the requirements of precise control.
[0034] Currently, the main method for protecting components that require intermittent spraying is to apply high-temperature resistant tape to the areas that need protection. However, tape application is inefficient, the application accuracy is difficult to guarantee, and dimensional deviations can easily occur, affecting the spraying effect.
[0035] In response to the above problems, such as Figure 2 and Figure 3 As shown, an embodiment of this application provides a protective fixture 100, mainly used for thermal spray protection of various types of valve plate shafts 200 workpieces in the petrochemical industry. The protective fixture 100 includes a first shielding member 110 and a second shielding member 120.
[0036] The first shielding member 110 includes a first enclosure wall 112 and a first side wall 111. The first enclosure wall 112 surrounds the periphery of the first side wall 111 and is connected to the first side wall 111. The first side wall 111 is provided with a first through hole 1111. The second shielding member 120 includes a second enclosure wall 122 and a second side wall 121. The second enclosure wall 122 surrounds the periphery of the second side wall 121 and is connected to the second side wall 121. The second side wall 121 is provided with a second through hole 1211. The end of the first enclosure wall 112 away from the first side wall 111 and the end of the second enclosure wall 122 away from the second side wall 121 are sealed together.
[0037] The first shielding member 110 and the second shielding member 120 are made of metal. For example, copper alloy, aluminum alloy, iron alloy, etc., with aluminum alloy being preferred.
[0038] The installation method of the protective fixture 100 is as follows: one long shaft of the valve plate shaft 200 is passed through the first through hole 1111 of the first shielding member 110, so that the short shaft part of the valve plate shaft 200 is housed in the first shielding member 110; the other long shaft of the valve plate shaft 200 is passed through the second through hole 1211 of the second shielding member 120, so that the remaining part of the short shaft of the valve plate shaft 200 is housed in the second shielding member 120; and the end of the first enclosure wall 112 away from the first side wall 111 and the end of the second enclosure wall 122 away from the second side wall 121 are sealed together.
[0039] In this way, the short shaft portion of the valve plate shaft 200 workpiece that needs to be shielded is completely contained within the protective fixture 100, and the entire surface of the short shaft is completely covered by the protective fixture 100, reducing the thermal shock and impact of the sprayed flame and powder on the short shaft portion of the valve plate shaft 200 workpiece, reducing the generation of local thermal stress in the workpiece, and improving product yield.
[0040] Meanwhile, the protective fixture 100 of this application has a simple and efficient installation method, and provides high dimensional accuracy control for the parts of the valve plate shaft 200 that need to be shielded, thereby improving the spraying effect and accuracy of the valve plate shaft 200. Furthermore, the protective fixture 100 has good heat dissipation, is not easily deformed, is easy to assemble and disassemble, and can be reused.
[0041] In some embodiments, the first enclosure wall 112 is provided with a first engaging structure 1121 at the end away from the first side wall 111, and the second enclosure wall 122 is provided with a second engaging structure 1221 at the end away from the second side wall 121, and the first engaging structure 1121 and the second engaging structure 1221 are connected in cooperation.
[0042] See also Figure 3 In one embodiment, the first engaging structure 1121 and the second engaging structure 1221 of the first enclosure 112 are stepped, and the steps of the first engaging structure 1121 and the second engaging structure 1221 cooperate with each other to achieve a sealed connection. This structure makes the gap between the first engaging structure 1121 and the second engaging structure 1221 linear, reducing the amount of dust entering the protective fixture 100 through the gap during the spraying process, enhancing the sealing performance of the protective fixture 100, improving the spraying accuracy, and improving the spraying effect.
[0043] In one embodiment, multiple grooves may be machined on the end face of the first enclosure 112 away from the first sidewall 111, and these grooves serve as first engaging structures 1121. Correspondingly, multiple protrusions may be machined on the end face of the second enclosure 122 away from the second sidewall 121, and these protrusions serve as second engaging structures 1221. During installation, one protrusion is embedded into one corresponding groove. The first shielding member 110 and the second shielding member 120 are positioned and installed to reduce dust entering the protective fixture 100 through the gap between the first engaging structure 1121 and the second engaging structure 1221 during the spraying process, thereby enhancing the sealing performance of the protective fixture 100, improving the spraying accuracy, and enhancing the spraying effect.
[0044] In some embodiments, the protective fixture 100 further includes a first seal located at the junction of the first enclosure 112 and the second enclosure 122.
[0045] like Figure 3As shown, when both the first engaging structure 1121 and the second engaging structure 1221 are stepped, the first sealing element is an O-ring, which can be selected from UHSO O-rings, UHPO O-rings, UNO O-rings, DHO O-rings, high temperature resistant O-rings, high pressure resistant O-rings, or corrosion resistant O-rings.
[0046] like Figure 3 As shown, the first seal is disposed on the low-step surface of the first engaging structure 1121 or the low-step surface of the second engaging structure 1221. The low-step surface refers to the surface of the first engaging structure 1121 that is parallel to and closer to the first sidewall 111; or, the low-step surface refers to the surface of the second engaging structure 1221 that is parallel to and closer to the second sidewall 121.
[0047] In some embodiments, the protective fixture 100 further includes two second seals located at the first through hole 1111 or the second through hole 1211. The second seals are O-rings, specifically UHSO, UHPO, UNO, DHO, high-temperature resistant, high-pressure resistant, or corrosion-resistant O-rings. Thus, after the protective fixture 100 is assembled with the valve plate shaft 200, the connection between the long shafts on both sides of the valve plate shaft 200 and the protective fixture 100 is sealed, reducing the amount of dust entering the protective fixture 100 through the gaps between the first through hole 1111 or the second through hole 1211 and the valve plate shaft 200 during the spraying process. This enhances the sealing performance of the protective fixture 100, improves spraying accuracy, and enhances the spraying effect.
[0048] When the size of the valve plate shaft 200 changes, the gap between the hole wall of the first through hole 1111 and the valve plate shaft 200 changes accordingly. A second sealing element of the corresponding size is selected based on the actual gap size to seal the gap, enabling the protective fixture 100 of this application to perform spray protection on valve plate shafts 200 of various specifications, thus improving the practicality of the protective fixture 100.
[0049] like Figure 2 and Figure 3 As shown, in some embodiments, the protective fixture 100 is further provided with a plurality of overlapping holes 130, which are disposed on the first enclosure 112 and the second enclosure 122. The protective fixture 100 also includes a plurality of fasteners 140, with one fastener 140 corresponding to one overlapping hole 130.
[0050] In one embodiment, when the fastener 140 is a double-ended bolt or a fastening bolt, the overlapping hole 130 is configured as a threaded hole.
[0051] In one embodiment, the fastener 140 is a pin, and the hole wall of the stacked hole 130 is a smooth hole wall.
[0052] like Figure 2As shown, in one embodiment, a plurality of stacked holes 130 are evenly spaced along the circumference of the first enclosure wall 112. The arrangement of the plurality of stacked holes 130 and the plurality of fasteners 140 makes the connection between the first shielding member 110 and the second shielding member 120 more stable.
[0053] When the fastener 140 is positioned within the stacked hole 130, the fastener 140 is completely recessed, effectively reducing the impact of the spraying process on the fastener 140 and extending its service life. Simultaneously, by ensuring the fastener 140 is fully contained within the stacked hole 130, spraying accuracy is improved, interference with the spraying trajectory is effectively avoided, continuous spraying operations are achieved, and production efficiency is increased.
[0054] like Figure 3 As shown, in some embodiments, the stacked hole 130 includes a first hole segment 131 and a second hole segment 132.
[0055] In one embodiment, the first hole segment 131 is a through hole provided in the first enclosure wall 112, and the second hole segment 132 is a blind hole provided in the second enclosure wall 122.
[0056] The protective fixture 100 also includes multiple baffles, one of which is removably disposed in a stacked hole 130. The baffle is located on the enclosure wall at the end of the first hole section 131 away from the second hole section 132. The baffle is used to reduce dust entering the stacked hole 130 and to protect the fastener 140.
[0057] For example, the baffle is a high-temperature resistant tape, which is attached to the first enclosure 112 and seals the opening of the stacked hole 130.
[0058] For example, the baffle is a sealing element provided in the stacked hole 130, and the sealing element is screwed into or out of the stacked hole 130 by means of a threaded connection.
[0059] In some embodiments, a first groove 1112 is provided on the side of the first sidewall 111 near the first enclosure wall 112, and the first groove 1112 communicates with the first through hole 1111. By providing the first groove 1112, the first shielding member 110 can be matched with valve plate shafts 200 of more specifications.
[0060] In some embodiments, a second groove 1212 is provided on the side of the second sidewall 121 near the second enclosure wall 122, and the second groove 1212 communicates with the second through hole 1211. By providing the second groove 1212, the second shielding member 120 can be matched with valve plate shafts 200 of more specifications.
[0061] In some implementations, such as Figure 2 and Figure 3 As shown, the cross-sections of the first enclosure wall 112, the first side wall 111, the first groove 1112, the second enclosure wall 122, the second side wall 121, and the second groove 1212 are circular.
[0062] See also Figure 4 In some embodiments, the inner diameter of the first enclosure 112 is D1, the inner diameter of the first groove 1112 is D2, and the diameter of the first through hole 1111 is D3, satisfying: 0.45≤D2 / D1≤0.55; 0.2≤D3 / D2≤0.3, so that the first shielding member 110 can be used for spray protection of valve plate shafts 200 of more specifications.
[0063] The outer diameter of the first enclosure 112 is 200-600mm, the inner diameter D1 of the first enclosure 112 is 180-540mm, and the depth of the first enclosure 112 is 36-120mm.
[0064] The inner diameter D2 of the first groove 1112 is 100-300mm, and the depth of the first groove 1112 is 18-60mm.
[0065] The diameter D3 of the first through hole 1111 is 25-75mm, and the depth of the first through hole 1111 is 6mm-20mm.
[0066] See also Figure 5 In some embodiments, the inner diameter of the second enclosure 122 is D4, the inner diameter of the second groove 1212 is D5, and the diameter of the second through hole 1211 is D6, satisfying: 0.45≤D5 / D4≤0.55; 0.2≤D6 / D5≤0.3, so that the second shielding member 120 can be used for spray protection of valve plate shafts 200 of more specifications.
[0067] The outer diameter of the second enclosure 122 is 200-600mm, the inner diameter D4 of the second enclosure 122 is 180-540mm, and the depth of the second enclosure 122 is 36-120mm.
[0068] The inner diameter D5 of the second groove 1212 is 100-300mm, and the depth of the second groove 1212 is 18-60mm. The diameter D6 of the second through hole 1211 is 25-75mm, and the depth of the second through hole 1211 is 6mm-20mm.
[0069] The dimensions of the protective fixture 100 in one embodiment are as follows:
[0070] The outer diameter of the first enclosure 112 is 315mm, the inner diameter is 284mm, and the depth is 57mm.
[0071] The inner diameter of the first groove 1112 is 140mm and the depth is 25mm.
[0072] The diameter of the first through hole 1111 is 35mm and the depth is 13mm.
[0073] The outer diameter of the second enclosure 122 is 315mm, the inner diameter is 284mm, and the depth is 57mm.
[0074] The inner diameter of the second groove 1212 is 140mm and the depth is 25mm.
[0075] The diameter of the second through hole 1211 is 35mm and the depth is 13mm.
[0076] This application also provides a spraying apparatus, including the protective fixture 100 in any of the above embodiments, and therefore has all the beneficial effects of the protective fixture 100 in any of the above embodiments, which will not be described in detail here.
[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0078] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A protective tooling for spray coating protection of valve plate shaft workpieces, characterized in that, include: The first shielding component includes a first enclosure wall and a first side wall. The first enclosure wall surrounds the periphery of the first side wall and is connected to the first side wall. The first side wall is provided with a first through hole. The second shielding component includes a second enclosure and a second sidewall. The second enclosure is disposed around the periphery of the second sidewall and connected to the second sidewall. The second sidewall has a second through hole. The end of the first enclosure away from the first sidewall and the end of the second enclosure away from the second sidewall are sealed together.
2. The protective tooling according to claim 1, characterized in that, The first enclosure wall has a first engaging structure at the end away from the first side wall, and the second enclosure wall has a second engaging structure at the end away from the second side wall. The first engaging structure and the second engaging structure are connected in cooperation.
3. The protective tooling according to claim 1, characterized in that, The protective tooling also includes a first sealing element, which is located at the connection between the first enclosure and the second enclosure. And / or, the protective fixture further includes two second seals, which are disposed at the first through hole or the second through hole.
4. The protective tooling according to claim 1, characterized in that, The protective fixture is also provided with a plurality of overlapping holes, which are provided on the first enclosure and the second enclosure. The protective fixture also includes a plurality of fasteners, with one fastener corresponding to one of the overlapping holes.
5. The protective tooling according to claim 4, characterized in that, The stacked hole includes a first hole segment and a second hole segment. The first hole segment is a through hole provided in the first enclosure wall, and the second hole segment is a blind hole provided in the second enclosure wall. The protective tooling also includes a plurality of baffles. One baffle is removably provided in one of the stacked holes. The baffle is provided in the enclosure wall and is located at the end of the first hole segment away from the second hole segment.
6. The protective tooling according to any one of claims 1 to 5, characterized in that, A first groove is provided on the side of the first sidewall close to the first enclosure wall, and the first groove communicates with the first through hole; A second groove is provided on the side of the second sidewall near the second enclosure wall, and the second groove communicates with the second through hole.
7. The protective tooling according to claim 6, characterized in that, The cross-sections of the first enclosure, the first sidewall, the first groove, the second enclosure, the second sidewall, and the second groove are circular.
8. The protective tooling according to claim 7, characterized in that, The inner diameter of the first enclosure is D1, the inner diameter of the first groove is D2, and the diameter of the first through hole is D3, satisfying: 0.45≤D2 / D1≤0.55; 0.2≤D3 / D2≤0.
3.
9. The protective tooling according to claim 7, characterized in that, The inner diameter of the second enclosure is D4, the inner diameter of the second groove is D5, and the diameter of the second through hole is D6, satisfying: 0.45≤D5 / D4≤0.55; 0.2≤D6 / D5≤0.
3.
10. A spraying device, characterized in that, The protective tooling includes any one of claims 1 to 9.