Thermal barrier auxiliary tool for workpiece coating

Abstract

The utility model discloses a workpiece coating thermal barrier auxiliary tool which comprises a hub and an installation cylinder and further comprises a protection assembly which is arranged on the installation cylinder and used for shielding and protecting installation holes and bolt connecting holes when the hub is subjected to thermal barrier coating. The protection assembly comprises a first protection cylinder and second protection cylinders which are fixedly connected to the side, close to the hub, of the mounting cylinder, the first protection cylinder and the second protection cylinders are matched with the mounting holes and the bolt connecting holes correspondingly, and mounting grooves are formed in the side walls of the first protection cylinder and the second protection cylinders correspondingly; and each mounting groove is provided with a rubber air bag. Through the arrangement of the protection assembly, under the matching action of the gas injection assembly and the limiting assembly, shielding protection on the mounting holes and the bolt connecting holes during thermal barrier coating of the hub is achieved, and meanwhile the convenience of shielding protection operation on the mounting holes in the surface of the hub and all the bolt connecting holes is improved.

Description

Technical Field

[0001] This utility model relates to the field of workpiece thermal barrier coating technology, specifically to an auxiliary tooling for workpiece thermal barrier coating. Background Technology

[0002] Thermal barrier coating is a special type of coating mainly used to improve the heat resistance of materials in high-temperature environments. Therefore, in order to improve the performance of workpieces in high-temperature environments, thermal barrier coatings can be applied to the surface of the workpieces to extend their service life in high-temperature environments.

[0003] Taking wheel hub thermal barrier coating as an example, during the thermal barrier coating process, the mounting holes and bolt connection holes of the wheel hub are important installation parts with high surface precision and dimensional requirements. Therefore, it is necessary to shield these mounting holes and bolt connection holes during the thermal barrier coating process. Existing shielding methods usually use rubber plugs to block them. At the same time, due to the requirement of good sealing performance, the plugs fit tightly with the mounting holes and bolt connection holes. Although the tight fit of the plugs ensures the shielding effect of the mounting holes and bolt connection holes, it is necessary to overcome the deformation force of the rubber material of the plugs when installing and removing them. This increases the resistance to the installation and removal of the plugs, thereby reducing the ease of installation and removal. In addition, repeated compression and deformation can easily cause the surface of the plugs to crack due to long-term compression and deformation, thus reducing the long-term service life of the plugs.

[0004] Therefore, there is an urgent need for a workpiece thermal barrier coating auxiliary tooling to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention provides the following technical solution: a workpiece coating thermal barrier auxiliary tooling, including a hub and a mounting cylinder, wherein the hub is provided with a mounting hole and a plurality of bolt connection holes are provided in a ring around the mounting hole, and further includes a protective component provided in the mounting cylinder for shielding and protecting the mounting hole and each bolt connection hole during the coating of the hub thermal barrier.

[0006] The protective assembly includes a first protective cylinder and several second protective cylinders fixedly connected to the mounting cylinder near the wheel hub. The first protective cylinder and several second protective cylinders are respectively matched with mounting holes and bolt connection holes. The side walls of the first protective cylinder and several second protective cylinders are provided with mounting grooves. Each mounting groove is provided with a rubber airbag. The side walls of each mounting groove are provided with multiple through holes, and each through hole is connected to the rubber airbag. The mounting cylinder is provided with an inflation assembly for inflating each rubber airbag.

[0007] Each of the rubber airbags is made of silicone rubber or fluororubber.

[0008] The air injection assembly includes an air injection rod slidably connected to the side of the mounting cylinder away from the first protective cylinder. An air injection plate is fixedly connected to one end of the air injection rod located on the mounting cylinder, and a pressing plate is fixedly connected to the other end of the air injection rod. The mounting cylinder is provided with a limiting component for limiting the air injection plate and a resetting component for resetting the mounting cylinder after the limiting is released. The bottom wall of the mounting cylinder has multiple air inlets, and each air inlet is respectively connected to the first protective cylinder and each second protective cylinder.

[0009] The limiting component includes a fixing plate fixedly connected to the side of the mounting cylinder near the pressing plate. The fixing plate has a fixing hole on the side near the air injection rod. A limiting plate is slidably connected to the fixing hole. An inclined surface is provided on the side of the limiting plate away from the mounting cylinder. A baffle is fixedly connected to the side of the pressing plate near the limiting plate. The fixing plate is provided with a driving component for driving the limiting plate.

[0010] The driving assembly includes a driving hole opened on the side of the fixing plate away from the mounting cylinder. A driving plate is slidably connected to the driving hole. One end of the driving plate is connected to a limiting plate. A first spring is fixedly connected to the bottom wall of the fixing hole. The other end of the first spring is connected to the limiting plate.

[0011] The reset component is a second spring, which is disposed inside the mounting cylinder and its two ends are respectively connected to the air injection plate and the bottom wall of the mounting cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the design of protective components, and with the cooperation of the air injection component and the limiting component, not only achieves shielding and protection of mounting holes and bolt connection holes during wheel hub thermal barrier coating, but also improves the convenience of shielding and protecting mounting holes and bolt connection holes on the wheel hub surface. Furthermore, during multiple connection processes, the first protective cylinder and each of the second protective cylinders experience relatively low compressive force, thus reducing the risk of damage to the first and second protective cylinders due to compression deformation. This further enhances the long-term effectiveness of shielding and protecting mounting holes and bolt connection holes on the wheel hub surface. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the hub structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the protective component, the air injection component, and the limiting component of this utility model;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0018] In the diagram: 101, hub; 102, mounting hole; 103, bolt connection hole; 104, mounting sleeve; 201, first protective sleeve; 202, second protective sleeve; 203, mounting groove; 204, rubber airbag; 205, through hole; 301, air injection plate; 302, air injection rod; 303, pressing plate; 304, air inlet; 401, fixing plate; 402, fixing hole; 403, limiting plate; 404, inclined surface; 405, baffle; 501, drive hole; 502, drive plate; 503, first spring; 6, second spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figures 1-4 The workpiece coating thermal barrier auxiliary tooling shown in the figure includes a hub 101 and a mounting cylinder 104. The hub 101 has a mounting hole 102 and a plurality of bolt connection holes 103 circumferentially formed around the mounting hole 102. It also includes a protective component disposed in the mounting cylinder 104 for shielding and protecting the mounting hole 102 and each bolt connection hole 103 during the thermal barrier coating of the hub 101.

[0022] The protective assembly includes a first protective cylinder 201 and various second protective cylinders 202 fixedly connected to the mounting cylinder 104 near the wheel hub 101. The outer diameter of the first protective cylinder 201 and various second protective cylinders 202 is slightly smaller than the inner diameter of the mounting hole 102 and various bolt connection holes 103. The first protective cylinder 201 and various second protective cylinders 202 are respectively matched with the mounting hole 102 and various bolt connection holes 103. The sidewalls of the first protective cylinder 201 and various second protective cylinders 202 are provided with mounting grooves 203. Each mounting groove 203 is provided with a rubber airbag 204. The sidewalls of each mounting groove 203 are provided with multiple through holes 205. Each through hole 205 communicates with the rubber airbag 204. The mounting cylinder 104 is provided with an inflation assembly for inflating each rubber airbag 204.

[0023] It should be noted that, through the design of the protective components, in conjunction with the air injection components and the limiting components, the mounting holes 102 and bolt connection holes 103 are shielded and protected during the thermal barrier coating of the wheel hub 101. This also improves the ease of operation for shielding and protecting the mounting holes 102 and bolt connection holes 103 on the surface of the wheel hub 101. Furthermore, during multiple connection processes, the first protective cylinder 201 and each of the second protective cylinders 202 experience less compressive force, thus reducing the risk of damage to the first protective cylinder 201 and each of the second protective cylinders 202 due to compression deformation. This further enhances the long-term effectiveness of shielding and protecting the mounting holes 102 and bolt connection holes 103 on the surface of the wheel hub 101.

[0024] It is worth noting that the thermal barrier coating process and working principle of the wheel hub 101 are existing technologies and will not be described in detail here.

[0025] Please see Figures 1-4 The rubber airbags 204 shown in the diagram are made of silicone rubber or fluororubber.

[0026] It should be noted that by using silicone rubber or fluororubber to make the rubber airbag 204, the temperature resistance of the rubber airbag 204 during use is improved. At the same time, the materials used to make the rubber airbag 204 include, but are not limited to, silicone rubber or fluororubber, and a better material can be selected according to the specific use environment.

[0027] Please see Figure 3 and Figure 4 The air injection assembly shown in the figure includes an air injection rod 302 slidably connected to the side of the mounting cylinder 104 away from the first protective cylinder 201. An air injection plate 301 is fixedly connected to one end of the air injection rod 302 located in the mounting cylinder 104, and a pressing plate 303 is fixedly connected to the other end of the air injection rod 302. The mounting cylinder 104 is provided with a limiting component for limiting the air injection plate 301 and a resetting component for resetting the mounting cylinder 104 after the limiting is released. A plurality of air inlets 304 are opened on the bottom wall of the mounting cylinder 104, and each air inlet 304 is respectively connected to the first protective cylinder 201 and each of the second protective cylinders 202.

[0028] It should be noted that the gas injection component is used to inject the gas in the mounting cylinder 104 into each rubber air bladder 204. During the injection process, due to the gas pressure, each rubber air bladder 204 can expand.

[0029] Working principle: When applying thermal barrier coating to the wheel hub 101, first hold the mounting cylinder 104 and align the first protective cylinder 201 and each of the second protective cylinders 202 with the mounting holes 102 and bolt connection holes 103 of the wheel hub 101. Then push the mounting cylinder 104 closer to the wheel hub 101. With the continuous pushing of the mounting cylinder 104, the first protective cylinder 201 and each of the second protective cylinders 202 are inserted into the mounting holes 102 and bolt connection holes 103 respectively.

[0030] After the first protective cylinder 201 and each of the second protective cylinders 202 are inserted into the mounting holes 102 and the bolt connection holes 103 respectively, the pressure plate 303 is pushed to cause the air injection plate 301 at one end of the air injection rod 302 to slide inside the mounting cylinder 104. The sliding of the air injection plate 301 within the mounting cylinder 104 forces the gas inside the mounting cylinder 104 through the air inlets 304 to the first protective cylinder 201 and each of the second protective cylinders 202, and finally through the through holes 205 into the rubber airbag 204, causing the rubber airbag 204 to inflate. The inflated rubber airbag 204... 4 will abut against the inner walls of the mounting hole 102 and each bolt connection hole 103, and thus utilize the pressing action of the rubber airbag 204 to shield and protect the mounting hole 102 and each bolt connection hole 103 during the heat barrier coating of the wheel hub 101, thereby reducing the probability of paint entering the mounting hole 102 and each bolt connection hole 103. Furthermore, when the air injection plate 301 is squeezed and pushed, it will be limited by the limiting component when pushed to a certain extent, thus ensuring the continuity and stability of each rubber airbag 204 after being inflated by air.

[0031] After shielding and protecting the mounting holes 102 and bolt connection holes 103 on the hub 101, the coating material can be heated to a molten or semi-molten state using high-temperature plasma. Then, these molten particles are sprayed onto the workpiece surface by high-speed airflow. These particles cool down and accumulate rapidly to form a coating.

[0032] After the thermal barrier coating of the wheel hub 101 is completed, the limiting position of the air injection plate 301 is released using the drive assembly. At this time, under the action of the reset assembly, the air injection plate 301 is pushed to move in the reverse direction within the mounting cylinder 104, thereby drawing the gas from each rubber airbag 204 back into the mounting cylinder 104. This prevents the rubber airbags 204 from abutting against the inner walls of the mounting holes 102 and bolt connection holes 103. At this point, the first protective cylinder 201 and each of the second protective cylinders 202 can be easily pulled out of the mounting holes 102 and bolt connection holes 103 by pulling the mounting cylinder 104. Furthermore, due to the... The outer diameter is slightly smaller than the inner diameter of the mounting hole 102 and each bolt connection hole 103, which reduces the resistance to insertion and removal of the first protective cylinder 201 and each second protective cylinder 202. This improves the convenience of shielding and protecting the mounting hole 102 and each bolt connection hole 103 on the surface of the wheel hub 101. At the same time, the first protective cylinder 201 and each second protective cylinder 202 are subjected to less compressive force during multiple connection processes, thus reducing the risk of damage to the first protective cylinder 201 and each second protective cylinder 202 due to compression deformation. This further improves the long-term effectiveness of shielding and protecting the mounting hole 102 and each bolt connection hole 103 on the surface of the wheel hub 101.

[0033] Example 2

[0034] Please see Figure 3 and Figure 4 This embodiment further illustrates Example 1. The limiting component shown in the figure includes a fixing plate 401 fixedly connected to the side of the mounting cylinder 104 near the pressing plate 303. The fixing plate 401 has a fixing hole 402 on the side near the air injection rod 302. The fixing hole 402 is slidably connected to a limiting plate 403. The limiting plate 403 has an inclined surface 404 on the side away from the mounting cylinder 104. A baffle 405 is fixedly connected to the side of the pressing plate 303 near the limiting plate 403. The fixing plate 401 is provided with a driving component for driving the limiting plate 403.

[0035] It should be noted that, through the setting of the limiting component, when the pressing plate 303 is pressed down, it will simultaneously drive the baffle 405 to move down. When the baffle 405 abuts against the limiting plate 403, under the interaction force of the inclined surface 404 and the guiding action of the fixing hole 402, the limiting plate 403 will be pushed to retract into the fixing hole 402. When the baffle 405 passes the limiting plate 403, under the reset action of the driving component, the limiting plate 403 will be pushed out of the fixing hole 402, thereby blocking the baffle 405 and thus limiting the inflation plate 301, thereby ensuring the continuity and stability of each rubber airbag 204 after inflation.

[0036] Further optimization: The limit height of the limit component can be adjusted according to the specific usage.

[0037] Please see Figure 3 and Figure 4 The driving assembly shown in the figure includes a driving hole 501 opened on the side of the fixed plate 401 away from the mounting cylinder 104. The driving hole 501 is slidably connected to a driving plate 502. One end of the driving plate 502 is connected to a limiting plate 403. A first spring 503 is fixedly connected to the bottom wall of the fixed hole 402. The other end of the first spring 503 is connected to the limiting plate 403.

[0038] It should be noted here that: by setting the drive component, the limiting plate 403 is pushed to retract into the fixing hole 402, thereby realizing the release of the limit on the air injection plate 301.

[0039] A further optimization is that a sealing expansion strip (not shown) is provided at the drive hole 501 to achieve a seal, thereby reducing the risk of coating material entering the fixing hole 402.

[0040] Example 3

[0041] Please see Figure 3 This embodiment is a further explanation of other embodiments. The reset component in the figure is the second spring 6. The second spring 6 is disposed in the mounting cylinder 104, and its two ends are respectively connected to the air injection plate 301 and the bottom wall of the mounting cylinder 104.

[0042] It should be noted here that the reset component is used to reset the gas injection plate 301 after the limit is released, thereby using the reset of the gas injection plate 301 to draw the gas in each rubber airbag 204 back into the mounting cylinder 104.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A workpiece thermal barrier coating auxiliary tooling, comprising: The wheel hub (101) and mounting sleeve (104), wherein the wheel hub (101) has a mounting hole (102) and a plurality of bolt connection holes (103) circumferentially formed around the mounting hole (102), characterized in that it further includes: A protective component installed in the mounting sleeve (104) to shield and protect the mounting holes (102) and various bolt connection holes (103) during the thermal barrier coating of the hub (101); The protective assembly includes a first protective cylinder (201) and a number of second protective cylinders (202) fixedly connected to the mounting cylinder (104) near the wheel hub (101). The first protective cylinder (201) and the number of second protective cylinders (202) are respectively matched with the mounting hole (102) and the bolt connection hole (103). The side wall of the first protective cylinder (201) and the number of second protective cylinders (202) are provided with mounting grooves (203). Each mounting groove (203) is provided with a rubber airbag (204). The side wall of each mounting groove (203) is provided with a plurality of through holes (205). Each through hole (205) communicates with the rubber airbag (204). The mounting cylinder (104) is provided with an air injection assembly for injecting air into each rubber airbag (204).

2. The workpiece coating thermal barrier auxiliary tooling according to claim 1, characterized in that: Each of the rubber airbags (204) is made of silicone rubber or fluororubber.

3. The workpiece coating thermal barrier auxiliary tooling according to claim 2, characterized in that: The air injection assembly includes an air injection rod (302) slidably connected to the side of the mounting cylinder (104) away from the first protective cylinder (201). An air injection plate (301) is fixedly connected to one end of the air injection rod (302) located in the mounting cylinder (104), and a pressing plate (303) is fixedly connected to the other end of the air injection rod (302). The mounting cylinder (104) is provided with a limiting component for limiting the air injection plate (301) and a resetting component for resetting the mounting cylinder (104) after the limiting is released. The bottom wall of the mounting cylinder (104) is provided with a plurality of air inlets (304), and each air inlet (304) is respectively connected to the first protective cylinder (201) and each second protective cylinder (202).

4. The workpiece coating thermal barrier auxiliary tooling according to claim 3, characterized in that: The limiting component includes a fixing plate (401) fixedly connected to the side of the mounting cylinder (104) near the pressing plate (303). The fixing plate (401) has a fixing hole (402) on the side near the air injection rod (302). The fixing hole (402) is slidably connected to a limiting plate (403). The limiting plate (403) has an inclined surface (404) on the side away from the mounting cylinder (104). The pressing plate (303) is fixedly connected to a baffle (405) on the side near the limiting plate (403). The fixing plate (401) is provided with a driving component for driving the limiting plate (403).

5. The workpiece coating thermal barrier auxiliary tooling according to claim 4, characterized in that: The drive assembly includes a drive hole (501) on the side of the fixed plate (401) away from the mounting cylinder (104). The drive hole (501) is slidably connected to a drive plate (502). One end of the drive plate (502) is connected to a limiting plate (403). A first spring (503) is fixedly connected to the bottom wall of the fixed hole (402). The other end of the first spring (503) is connected to the limiting plate (403).

6. The workpiece coating thermal barrier auxiliary tooling according to claim 5, characterized in that: The reset component is a second spring (6), which is disposed inside the mounting cylinder (104) and its two ends are respectively connected to the air injection plate (301) and the bottom wall of the mounting cylinder (104).

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