Aero-engine stator blade paint spraying special tool

Abstract

The utility model discloses an aero-engine stator blade paint spraying special frock, including platform and clamping component, and the workpiece is taken after the paint spraying is finished to the transfer subassembly setting in clamping component, including transfer piece, and the non -machining area of workpiece is formed clamping by means of the clamping force of clamping component along vertical direction sliding installation in the inside of clamping component, extrusion piece sets up on the sliding path of transfer piece, and when the transfer piece is relative to clamping component and slides upward to with extrusion piece and resist the contact, the secondary extrusion clamping of workpiece is formed, through the pull transfer piece, can be after the coating is finished with the vertical take -out of workpiece from clamping component, avoids the direct contact of operator and unsolidified coating, eliminates the idle time of station caused by waiting for coating solidification, through setting extrusion piece, can increase the lateral pre -tension of workpiece in the process of pulling, ensures that workpiece is firmly caught when separating from the clamping plate restraint, prevents the coating scratch caused by the slide or the shaking.

Description

Technical Field

[0001] This utility model relates to the field of aerospace parts processing technology, specifically to a special tooling for painting aero-engine stator blades. Background Technology

[0002] As a core hot-end component, the stator blades of an aero-engine directly affect the engine's reliability, efficiency, and lifespan. To improve the blades' high-temperature resistance, corrosion resistance, and erosion resistance, a uniform, complete, and strongly bonded special protective coating must be prepared on their surface. This coating is typically achieved through high-precision processes such as plasma spraying and high-speed oxygen fuel spraying.

[0003] Reference publication number: CN220969558U. This utility model discloses a tooling for processing water pump blades, including an operating table. A first clamping structure and a second clamping structure are respectively provided on both sides of the upper surface of the operating table. The first clamping structure includes a movable plate and a fixed plate fixed to the surface of the operating table. The top edges of adjacent sides of the fixed plate and the movable plate are respectively provided with a first clamping plate and a second clamping plate. In this utility model, an operating table is provided, and the first clamping structure and the second clamping structure are respectively provided on both sides of the operating table surface. The first clamping structure uses the first clamping plate and the second clamping plate to press and fix the blade from the side, and the clamping plate can rotate. After the blade is fixed using the first clamping structure, it can be painted. The second clamping structure includes a support plate and a U-shaped plate. The pressure plate inside the U-shaped plate can clamp a local part of the blade, which facilitates polishing and grinding of the blade. This tooling can meet the clamping and fixing needs of different processing times, and has stronger versatility.

[0004] Although the above-mentioned device can fix the blades, the operation of the device causes all exposed parts of the blades to be sprayed, and both sides to abut against the clamping plate, which can easily lead to the following problems: after the spraying is completed, if we wait for the coating to fully cure, it will take a long time to occupy the main tooling, which will seriously affect the production efficiency; if the material is forcibly unloaded before the coating is dry, the operator's hands or tools will inevitably come into contact with and damage the uncured coating. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, this utility model provides a special tooling for painting stator blades of aero engines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special tooling for painting stator blades of aero engines, comprising: a platform and a clamping assembly, wherein the clamping assembly is disposed above the platform; A transfer assembly, disposed within the clamping assembly and used to retrieve the workpiece after painting, includes: The transfer component is slidably installed on the inside of the clamping assembly in the vertical direction, and clamps the non-machined area of ​​the workpiece by means of the clamping force of the clamping assembly; The extrusion component is positioned on the sliding path of the transfer component. When the transfer component slides upward relative to the clamping assembly until it comes into contact with the extrusion component, it forms a secondary extrusion clamping on the workpiece.

[0007] Preferably, the clamping assembly includes: A lead screw, wherein the lead screw is inserted into the platform and its rear end is fixedly connected to the platform via a bearing seat; The clamps are provided in two symmetrically distributed on both sides above the platform. The interior of one clamp is connected to the lead screw through a threaded sleeve, and the lower end of the other clamp is fixedly connected to the platform. The guide rail is set on the platform and is slidably connected to the guide rail via a slide block below the clamp plate on the surface of the lead screw.

[0008] Preferably, the clamping component further includes: A corrugated tube is located between two clamping plates and sleeved on the surface of the lead screw. Its two ends are fixedly connected to the bearing seat of the lead screw and the clamping plate on the surface of the lead screw, respectively, to prevent the lead screw from contacting the paint.

[0009] Preferably, the transport component includes: Insert plates, wherein two insert plates are provided and are respectively inserted into the opposite sides of two clamping plates; A connecting block, which is located above the insert plate and is fixedly connected to the insert plate by a vertical rod; The rack consists of two racks with their tooth surfaces facing each other. The two racks are fixed to opposite sides of two connecting blocks and are used to engage with each other when the two clamping plates are close together and clamp the workpiece. A handle, wherein the handle is located on the lower tooth side; A baffle, which is movable on the rear side of the lower rack via a rotating shaft, is used to block the upper rack; A latch is provided on the front side of the lower rack and is fixed to the front end of the baffle.

[0010] Preferably, the transport component also includes: The compensation strip has a groove on the side of one of the connecting blocks, and the end of the rack on the same side is inserted into the groove. The compensation strip is fixed to the upper end of the rack and to the inner wall of the groove. A compensation hole is provided in the middle of the strip to provide movement space for the upper rack when the two racks are pressed against each other.

[0011] Preferably, the extrusion component includes: The upright plate is fixed above the clamping plate. Its upper end is designed with a bend, and the upper ends of the two connecting blocks on opposite sides are both designed with chamfers. When the transfer component lifts the workpiece, the chamfers of the connecting blocks and the oblique pressure of the inner side of the upright plate can compress the two racks to move relative to each other.

[0012] Preferably, the extrusion component further includes: A sliding groove is formed on the surface of the vertical plate; A crossbar is fixed to the side of the connecting block near the vertical plate and inserted horizontally into a sliding groove, for sliding within the groove when the connecting block rises.

[0013] Compared with the prior art, this utility model provides a special tooling for painting stator blades of aero engines, which has the following beneficial effects: (1) By using the lifting and transfer component, the workpiece can be vertically removed from the clamping assembly immediately after the spraying is completed, which completely avoids direct contact between the operator's hands or tools and the uncured coating, and completely eliminates the idle time of the workstation caused by waiting for the coating to cure. (2) By setting up the extrusion component, the lateral pre-tightening force on the workpiece can be increased during the lifting process, ensuring that the workpiece is firmly gripped the moment it is released from the clamp, preventing the coating from being scratched due to slippage or shaking. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure in the embodiment; Figure 2 This is a schematic diagram of the transfer component in the embodiment; Figure 3 This is a partial structural breakdown diagram of the transfer component in the embodiment; Figure 4 This is a schematic diagram of the disassembled structure of the extrusion component in the embodiment; Figure 5 As in the embodiments Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the side structure of the extrusion member in the embodiment; Figure 7 This is a schematic diagram of the structure of the baffle and buckle in the embodiment.

[0015] In the diagram: 100, platform; 110, lead screw; 111, bellows; 120, clamp; 200, transfer assembly; 210, insert plate; 211, connecting block; 212, rack; 213, handle; 214, compensation strip; 215, baffle; 216, buckle; 220, upright plate; 221, crossbar. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] like Figure 1-7 As shown, this embodiment proposes a special tooling for painting stator blades of aero-engines, including: a platform 100 and a clamping assembly, with the clamping assembly disposed above the platform 100; like Figure 1 and Figure 2 As shown, the clamping assembly includes: The lead screw 110 is inserted into the platform 100 and its rear end is fixedly connected to the platform 100 through a bearing seat; Clamping plate 120, two clamping plates 120 are provided and symmetrically distributed on both sides above the platform 100. The interior of one clamping plate 120 is threadedly connected to the lead screw 110 through a threaded sleeve, and the lower end of the other clamping plate 120 is fixedly connected to the platform 100. The guide rail is set on the platform 100 and is slidably connected to the guide rail via a slide block below the clamping plate 120 on the surface of the lead screw 110.

[0018] When it is necessary to clamp the workpiece, firstly, the baffle 215 on the back of the upper rack 212 is flipped forward, and then the buckle 216 is connected so that the baffle 215 can maintain the posture of blocking the upper rack 212. The workpiece is placed in a specific posture between the insert plates 210 of the two clamping plates 120. Then, the operator rotates the lead screw 110. Since one of the clamping plates 120 is fixed and the other clamping plate 120 is restricted by the guide rail through the slide and can only move in a straight line, when the lead screw 110 rotates, the threaded sleeve on its surface will drive the movable clamping plate 120 to move in a straight line relative to the fixed clamping plate 120. As the distance between the two clamping plates 120 gradually decreases, the two ends of the workpiece will eventually contact the two insert plates 210, thereby being pressed by the clamping plates 120 and clamped by the insert plates 210.

[0019] Once the clamping is complete, personnel can use a handheld spray painting device to spray the surface of the stator blades.

[0020] The clamping components also include: The bellows 111 is located between the two clamping plates 120 and sleeved on the surface of the lead screw 110. Its two ends are fixedly connected to the bearing seat of the lead screw 110 and the clamping plate 120 on the surface of the lead screw 110, respectively, to prevent the lead screw 110 from contacting the paint. During the spraying process, the bellows 111 is placed on the surface of the lead screw 110, which can effectively prevent paint from splashing onto the surface of the lead screw 110 during the spraying process, avoid the paint from hardening and causing transmission jamming, and ensure the long-term operating accuracy and reliability of the tooling. The transfer component 200 is disposed in the clamping component and is used to pick up the workpiece after it has been painted.

[0021] like Figures 2-5 As shown, the transfer component 200 includes: The transfer component is slidably installed on the inside of the clamping assembly in the vertical direction, and clamps the non-machined area of ​​the workpiece by means of the clamping force of the clamping assembly; The transshipment items include: Insert plate 210, there are two insert plates 210, which are respectively inserted into the opposite side of the two clamping plates 120; Connecting block 211 is located above insert plate 210 and is fixedly connected to insert plate 210 via upright; Two racks 212 are provided, with their tooth surfaces facing each other. Each rack 212 is fixed to one side of one of the two connecting blocks 211. This allows them to engage with each other when the two clamping plates 120 are close together and clamping the workpiece, ensuring preload during lifting. Baffle 215, which is movable on the rear side of the lower rack 212 via a rotating shaft, is used to block the upper rack 212; The buckle 216 is disposed on the front side of the lower rack 212 and is fixed to the front end of the baffle 215; When the workpiece is finished being painted and the next workpiece needs to be processed, the connecting block 211 above the insert plate 210 moves relative to the insert plate 210 via the upright rod, so the two racks 212 are engaged with each other, thus locking the distance between the two insert plates 210. Also, since rubber pads are attached to the opposite sides of the two insert plates 210, the flexible rubber pads abut against the side of the workpiece, providing clamping force to the workpiece. It should be noted that a baffle 215 is provided on the upper part of the upper rack 212. The baffle 215 is an inverted U-shaped design. When the upper rack 212 and the lower rack 212 are pressed against each other, the inner wall of the baffle 215 does not contact the upper end face of the upper rack 212. Therefore, the upper rack 212 will not cause path obstruction when it avoids the upper part. At this time, the staff only needs to hold the handle 213 and lift the connecting block 211, the insert plate 210 and the workpiece between the two insert plates 210 upwards through the rack 212 below. The painted workpiece can be quickly taken out, and the whole operation will not cause any contact with the workpiece and will not affect the paint surface of the freshly painted workpiece.

[0022] The transshipment also includes: The compensation strip 214 has a groove on the side of one of the connecting blocks 211, and the end of the rack 212 on the same side is inserted into the groove. The compensation strip 214 is fixed to the upper end of the rack 212 and fixed to the inner wall of the groove. A compensation hole is provided in the middle of the strip to provide room for the upper rack 212 when the two racks 212 are pressed against each other. By setting the compensation bar 214, when the two racks 212 are relatively close and squeezed by the inclined surface of the teeth between them, the upper rack 212 can have a certain upward space, ensuring the smooth operation of the whole device.

[0023] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the extrusion component is positioned on the sliding path of the transfer component. When the transfer component slides upward relative to the clamping assembly until it comes into contact with the extrusion component, it forms a secondary extrusion clamping on the workpiece.

[0024] Extrusions include: The upright plate 220 is fixed above the clamping plate 120. Its upper end is designed with a bend. The upper ends of the two connecting blocks 211 on opposite sides are both designed with chamfers. When the transfer component lifts the workpiece, the chamfer of the connecting block 211 and the oblique pressing of the inner side of the upright plate 220 can compress the two racks 212 to move relative to each other and increase the pre-tightening force on the workpiece. During the above-mentioned lifting operation, in order to ensure that the two insert plates 210 have sufficient pre-tightening force on the workpiece, the force between the two insert plates 210 can be further increased by the above-mentioned upright plate 220 and its upper end bend, in conjunction with the chamfer of the connecting block 211.

[0025] The specific operation is as follows: As the connecting block 211 rises, its chamfer begins to contact the bend of the upper end of the vertical plate 220 and generate pressure. The force of this oblique pressure will push the two connecting blocks 211 to move relative to the center, thereby further increasing the lateral pressure on the workpiece during the lifting process. At the same time, the position of the two racks 212 changes, and the pulling force transmitted to the insert plate 210 through the connecting block 211 will also increase. As a result, the workpiece is firmly clamped in the insert plate 210, so that it can be smoothly removed from the original clamping position and sent to the curing area, and the tooling can immediately start the next cycle of operation.

[0026] like Figure 2 As shown, each of the two clamping plates 120 has a protruding insertion part on its opposite side to accommodate the insertion of the insert plate 210. The height of the insertion part is the same as the distance between the connecting block 211 and the bent part of the upright plate 220. Therefore, when the insert plate 210 is lifted up, when the chamfered part of the connecting block 211 contacts the bent part of the upright plate 220, the upright plate 220 also moves out of the insertion part of the clamping plate 120. Therefore, there is no path interference.

[0027] When it is necessary to reset the insert plate 210, simply release the latch 216 and flip the baffle 215 backward. The baffle 215 will then release the obstruction of the upper rack 212. After the workpiece is placed, the upper rack 212 and the lower rack 212 can be separated. Then, the insert plate 210 can be re-inserted into the corresponding insertion parts of the two clamping plates 120 by the connecting block 211. The extrusion also includes: A chute is formed on the surface of the vertical plate 220. A crossbar 221 is fixed to the side of the connecting block 211 near the vertical plate 220 and is inserted horizontally into the slide groove. It is used to slide in the slide groove when the connecting block 211 rises to ensure the verticality of the lifting. The above design allows for vertical positioning of the connecting block 211, while also enabling the insert plate 210 to be vertically lifted.

[0028] In actual operation, when it is necessary to paint the stator blades of an aero-engine, the blade is first placed between two insert plates 210. The movable clamping plate 120 is driven to move towards the fixed clamping plate 120 by rotating the lead screw 110, thereby firmly clamping the blade between the two insert plates 210. At this time, the two racks 212 mesh and engage with each other to form a preliminary pre-tightening.

[0029] After the painting is completed, the operator lifts the transfer component by the handle 213. During the lifting process, the chamfer on the connecting block 211 interacts with the inclined structure at the top of the vertical plate 220, generating a centripetal squeezing force. This pushes the two insert plates 210 to further clamp the blade, achieving a force-increasing effect as the lifting becomes tighter. At the same time, the sliding of the crossbar 221 in the groove ensures the stability of the vertical lifting, allowing the blade to be safely removed before the coating dries. This avoids coating damage and enables rapid tooling turnover, effectively solving the technical problems of low production efficiency and easy coating damage in traditional tooling.

[0030] In the description of this utility model, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A special tooling for painting stator blades of aircraft engines, characterized in that, include: Platform (100) and clamping assembly, the clamping assembly being disposed above platform (100); A transfer assembly (200), disposed within a clamping assembly and used for picking up a workpiece after painting, includes: The transfer component is slidably installed on the inside of the clamping assembly in the vertical direction, and clamps the non-machined area of ​​the workpiece by means of the clamping force of the clamping assembly; The extrusion component is positioned on the sliding path of the transfer component. When the transfer component slides upward relative to the clamping assembly until it comes into contact with the extrusion component, it forms a secondary extrusion clamping on the workpiece.

2. The special tooling for painting aero-engine stator blades according to claim 1, characterized in that: The clamping components include: A lead screw (110) is inserted into a platform (100) and its rear end is fixedly connected to the platform (100) through a bearing seat; Clamping plate (120), there are two clamping plates (120) and they are symmetrically distributed on both sides above the platform (100). The interior of one clamping plate (120) is threadedly connected to the lead screw (110) through a threaded sleeve, and the lower end of the other clamping plate (120) is fixedly connected to the platform (100). The guide rail is set on the platform (100) and is slidably connected to the guide rail via a slide block below the clamp (120) on the surface of the lead screw (110).

3. The special tooling for painting aero-engine stator blades according to claim 2, characterized in that: The clamping components also include: The bellows (111) is located between two clamps (120) and sleeved on the surface of the lead screw (110). Its two ends are fixedly connected to the bearing seat of the lead screw (110) and the clamp (120) on the surface of the lead screw (110) respectively, in order to prevent the lead screw (110) from contacting the paint.

4. The special tooling for painting aero-engine stator blades according to claim 2, characterized in that: The transshipment items include: Insert plate (210), there are two insert plates (210) and they are respectively inserted into the opposite side of the two clamps (120); Connecting block (211), the connecting block (211) is located above the insert plate (210) and is fixedly connected to the insert plate (210) by a vertical rod; The rack (212) has two racks (212), and the tooth surfaces of the two racks (212) are designed to face each other. The two racks (212) are fixed to opposite sides of the two connecting blocks (211) respectively, and are used to engage with each other when the two clamping plates (120) are close to each other and clamp the workpiece. Handle (213), the handle (213) is located on the lower tooth side; A baffle (215) is movable on the rear side of the lower rack (212) via a rotating shaft, and is used to block the upper rack (212); A buckle (216) is provided on the front side of the lower rack (212) and fixed to the front end of the baffle (215).

5. The special tooling for painting aero-engine stator blades according to claim 4, characterized in that: The transshipment also includes: The compensation strip (214) has a groove on the side of one of the connecting blocks (211), and the end of the rack (212) on the same side is inserted into the groove. The compensation strip (214) is fixed to the upper end of the rack (212) and fixed to the inner wall of the groove. The middle part has a compensation hole to provide movement space for the upper rack (212) when the two racks (212) are pressed against each other.

6. The special tooling for painting aero-engine stator blades according to claim 4, characterized in that: Extrusions include: The upright plate (220) is fixed above the clamping plate (120). Its upper end is designed with a bend. The upper ends of the two connecting blocks (211) on opposite sides are designed with chamfers. When the transfer component lifts the workpiece, the chamfer of the connecting block (211) and the oblique pressing of the inner side of the upright plate (220) can squeeze the two racks (212) to move relative to each other.

7. The special tooling for painting aero-engine stator blades according to claim 6, characterized in that: The extrusion also includes: The groove is formed on the surface of the vertical plate (220); A crossbar (221) is fixed to the side of the connecting block (211) near the vertical plate (220) and inserted horizontally into the slide groove, for sliding in the slide groove when the connecting block (211) rises.

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