Mold shell transferring mechanism for aircraft engine blade precision casting furnace

Abstract

The utility model discloses a mold shell transferring mechanism for an aircraft engine blade precision casting furnace. The transfer mechanism comprises a base, a sliding rail fixedly arranged on the base, a sliding block slidably arranged on the sliding rail, a mounting plate fixedly arranged on the sliding block, a mechanical arm fixedly mounted on the mounting plate, a grabbing device mounted on the mechanical arm and used for grabbing a mold shell, and a rack fixedly arranged on the base and parallel to the sliding rail. The servo motor is fixedly arranged on the mounting plate, the gear is mounted on an output shaft of the servo motor, and the gear is meshed with the rack. During use, the servo motor drives the gear to rotate, the gear rotates and is matched with the rack to push the sliding block and the mounting plate to move on the sliding rail until the mechanical arm and the grabbing device are moved to the position corresponding to the mold shell, then the mechanical arm drives the grabbing device to clamp the mold shell, and the servo motor drives the gear to rotate again. And the mounting plate, the mechanical arm, the grabbing device and the mold shell are driven to move to the next station.

Description

Technical Field

[0001] The utility model relates to the field of casting, and more specifically, to a mold shell transfer mechanism for an aero-engine blade precision casting furnace. Background Art

[0002] The main function of an aero-engine blade precision casting furnace is to melt alloy steel bar stock, pour it into a specialized mold, and then cool and solidify it into a blade. The mold is designed with casting channels and a blade shaping cavity. The molten metal cools and solidifies into the blade. The mold primarily consists of a pouring gate, a mold ring, a blade cavity, and a base. The mold is made of alumina, which is characterized by its high-temperature resistance but is also brittle and easily broken.

[0003] In precision casting furnaces for aero-engine blades, after molten metal is poured into the mold, a fork is manually used to remove the mold and insert a new one into the furnace. This process involves inserting the fork into the gap between the mold's upper ring and the blade cavity to lift the mold, effectively transferring the mold. However, this manual forking method is inefficient and places a heavy burden on workers. Therefore, a transfer mechanism that can automatically transfer molds in precision casting furnaces for aero-engine blades is urgently needed. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the present utility model provides a mold shell transfer mechanism for an aero-engine blade precision casting furnace.

[0005] The technical solution adopted by the utility model to solve its technical problems is: constructing a mold transfer mechanism for an aero-engine blade precision casting furnace, the transfer mechanism including a base, a slide rail fixed on the base, a slider slidably set on the slide rail, a mounting plate fixed on the slider, a mechanical arm fixedly mounted on the mounting plate, a grabbing device mounted on the mechanical arm for grabbing the mold, a rack fixed on the base and parallel to the slide rail, a servo motor fixed on the mounting plate, and a gear mounted on the output shaft of the servo motor, the gear being engaged with the rack.

[0006] In the mold transfer mechanism for an aero-engine blade precision casting furnace described in the present invention, the gripping device includes a clamping cylinder, a connecting seat fixed to the back of the clamping cylinder, a first clamping jaw fixed to the first clamping arm of the clamping cylinder, and a second clamping jaw fixed to the second clamping arm of the clamping cylinder. The first clamping jaw is provided with a first arc-shaped portion for clamping the first side of the mold upper ring, and the inner side wall of the first arc-shaped portion is provided with a first arc-shaped groove for the first side of the mold upper ring to be embedded. The second clamping jaw is provided with a second arc-shaped portion for clamping the second side of the mold upper ring, and the inner side wall of the second arc-shaped portion is provided with a second arc-shaped groove for the second side of the mold upper ring to be embedded.

[0007] In the mold shell transfer mechanism for an aircraft engine blade precision casting furnace described in the present utility model, the first clamping jaw further includes a first connecting portion fixedly connected to the first arc-shaped portion, the first connecting portion is provided with a first connecting hole, and the first clamping arm is provided with a second connecting hole at a position corresponding to the first connecting hole;

[0008] The second clamping jaw further includes a second connecting portion fixedly connected to the second arc-shaped portion, a third connecting hole is provided on the second connecting portion, and a fourth connecting hole is provided on the second clamping arm at a position corresponding to the third connecting hole.

[0009] In the mold transfer mechanism for an aero-engine blade precision casting furnace described in the utility model, the connecting seat includes an annular connecting portion, a first connecting block fixed to the first side of the annular connecting portion, and a second connecting block fixed to the second side of the annular connecting portion. The first connecting block is provided with a plurality of fifth connecting holes, the second connecting block is provided with a plurality of sixth connecting holes, a center hole is provided in the middle of the annular connecting portion, and the annular connecting portion is provided with a plurality of seventh connecting holes.

[0010] In the mold transfer mechanism for the precision casting furnace of aero-engine blades described in the utility model, the gripping device also includes a pressure sensor arranged in the clamping cylinder for detecting the output force of the clamping cylinder, and a controller arranged outside the clamping cylinder and electrically connected to the pressure sensor and used to control the output force of the clamping cylinder.

[0011] The implementation of the mold transfer mechanism for an aero-engine blade precision casting furnace of the present invention has the following beneficial effects: when using the mold transfer mechanism of an aero-engine blade precision casting furnace of the present invention, the gear is driven to rotate by a servo motor, and the gear rotates and pushes the slider and the mounting plate to move on the slide rail through cooperation with the rack until the robotic arm and the grabbing device are moved to the position corresponding to the mold, and then the robotic arm drives the grabbing device to clamp the mold, and the servo motor drives the gear to rotate again, driving the mounting plate, robotic arm, grabbing device and mold to move to the next workstation, thereby realizing the automated transfer of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0013] Figure 1 This is a structural schematic diagram of the mold shell transfer mechanism used in the precision casting furnace for aircraft engine blades of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the gripping device in the mold shell transfer mechanism of the precision casting furnace for aircraft engine blades in the utility model in the open state;

[0015] Figure 3The utility model is a schematic structural diagram of the clamping state of the grasping device in the mold shell transfer mechanism of the precision casting furnace for aero-engine blades. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] like Figure 1 As shown, in the first embodiment of the mold transfer mechanism for an aero-engine blade precision casting furnace of the present invention, the transfer mechanism 100 includes a base 101, a slide rail 102 fixed on the base 101, a slider 103 slidably arranged on the slide rail 102, a mounting plate 104 fixed on the slider 103, a robotic arm 105 fixedly mounted on the mounting plate 104, a grasping device 10 mounted on the robotic arm 105 for grasping the mold, a rack 106 fixed on the base 101 and parallel to the slide rail 102, a servo motor 107 fixed on the mounting plate 104, and a gear 108 mounted on the output shaft of the servo motor 107, and the gear 108 is engaged with the rack 106.

[0018] When using the mold transfer mechanism 100 of the aero-engine blade precision casting furnace of the utility model, the servo motor 107 drives the gear 108 to rotate, and the gear 108 rotates and pushes the slider 103 and the mounting plate 104 to move on the slide rail 102 through cooperation with the rack 106 until the robotic arm 105 and the grasping device 10 are moved to the position corresponding to the mold, and then the robotic arm 105 drives the grasping device 10 to clamp the mold, and the servo motor 107 drives the gear 108 to rotate again, driving the mounting plate 104, the robotic arm 105, the grasping device 10 and the mold to move to the next workstation, thereby realizing the automatic transfer of the mold.

[0019] Specifically, such as Figure 2 、 3 As shown, the gripping device 10 includes a clamping cylinder 11, a connecting seat 12 fixed to the back of the clamping cylinder 11, a first clamping jaw 15 fixed to the first clamping arm 13 of the clamping cylinder 11, and a second clamping jaw 16 fixed to the second clamping arm 14 of the clamping cylinder 11. The first clamping jaw 15 is provided with a first arc-shaped portion for clamping the first side of the mold upper ring 31, and the inner side wall of the first arc-shaped portion is provided with a first arc-shaped groove 17 for the first side of the mold upper ring 31 to be embedded. The second clamping jaw 16 is provided with a second arc-shaped portion for clamping the second side of the mold upper ring 31, and the inner side wall of the second arc-shaped portion is provided with a second arc-shaped groove 18 for the second side of the mold upper ring 31 to be embedded.

[0020] When using the mold shell grasping device of the present invention, the grasping device 10 is fixedly installed on the robot arm through the connecting seat 12 as a whole. When the mold shell needs to be clamped, the robot arm is controlled to drive the first clamping jaw 15 and the second clamping jaw 16 of the clamping device to align with the two sides of the mold shell respectively, and the first clamping jaw 15 and the second clamping jaw 16 of the clamping cylinder 11 are controlled to move toward each other until the first side of the mold shell upper ring 31 is completely embedded in the first arc-shaped groove 17 and the second side of the mold shell upper ring 31 is completely embedded in the second arc-shaped groove 18, so that the first clamping jaw 15 and the second clamping jaw 16 completely clamp the mold shell upper ring 31. Then the robot arm is controlled to drive the grasping device 10 to move to realize the grasping of the mold shell. In this application, by setting the first arc-shaped groove 17 and the second arc-shaped groove 18, the clamping is achieved by relying on the cooperation of the first arc-shaped groove 17, the second arc-shaped groove 18 and the mold shell upper ring 31, so that the mold shell position will not move during the transfer process, and the grasping is stable and reliable.

[0021] In this embodiment, the first clamping jaw 15 further includes a first connecting portion 19 fixedly connected to the first arc-shaped portion. The first connecting portion 19 is provided with a first connecting hole 21 . The first clamping arm 13 is provided with a second connecting hole 22 at a position corresponding to the first connecting hole 21 .

[0022] The second clamping jaw 16 further includes a second connecting portion 20 fixedly connected to the second arc-shaped portion. A third connecting hole 23 is defined on the second connecting portion 20 . A fourth connecting hole is defined on the second clamping arm 14 at a position corresponding to the third connecting hole 23 .

[0023] The first connecting hole 21 and the second connecting hole 22 are used to fix the first connecting portion 19 and the first clamping arm 13 through bolts and nuts, and the third connecting hole 23 and the fourth connecting hole are used to fix the second connecting portion 20 and the second clamping arm 14 through bolts and nuts.

[0024] Furthermore, the connecting seat 12 includes an annular connecting portion 24, a first connecting block 25 fixed to the first side of the annular connecting portion 24, and a second connecting block 26 fixed to the second side of the annular connecting portion 24. The first connecting block 25 is provided with a plurality of fifth connecting holes 27, the second connecting block 26 is provided with a plurality of sixth connecting holes 28, a center hole 29 is provided in the middle of the annular connecting portion 24, and the annular connecting portion 24 is provided with a plurality of seventh connecting holes 30.

[0025] Preferably, the fifth connecting hole 27 and the sixth connecting hole 28 can be used to achieve a fixed connection between the connecting base 12 and the back of the grabbing cylinder, and the seventh connecting hole 30 and the center hole 29 can be used to achieve a fixed connection between the connecting base 12 and the robotic arm.

[0026] Furthermore, in order to accurately control the output force of the clamping cylinder 11 when clamping the upper ring 31 of the mold shell and prevent the mold shell from being damaged or not being clamped tightly, the gripping device 10 also includes a pressure sensor disposed inside the clamping cylinder 11 for detecting the output force of the clamping cylinder 11, and a controller disposed outside the clamping cylinder 11 and electrically connected to the pressure sensor for controlling the output force of the clamping cylinder 11.

[0027] In the process of the clamping cylinder 11 gradually clamping the mold shell upper ring 31, the pressure sensor detects the output force of the clamping cylinder 11 and feeds the output force back to the controller, which further accurately controls the output force of the clamping cylinder 11.

[0028] Furthermore, in this utility model, unless otherwise expressly specified or limited, terms such as "connected," "connected," and "stacked" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integration; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mold shell transfer mechanism for an aircraft engine blade precision casting furnace, characterized in that: The transfer mechanism includes a base, a slide rail fixed on the base, a slider slidably arranged on the slide rail, a mounting plate fixed on the slider, a robotic arm fixedly mounted on the mounting plate, a grabbing device mounted on the robotic arm for grabbing the mold shell, a rack fixed on the base and parallel to the slide rail, a servo motor fixed on the mounting plate, and a gear mounted on the output shaft of the servo motor, wherein the gear is engaged with the rack.

2. The mold shell transfer mechanism for an aircraft engine blade precision casting furnace according to claim 1, characterized in that: The gripping device includes a clamping cylinder, a connecting seat fixed on the back of the clamping cylinder, a first clamping jaw fixed on the first clamping arm of the clamping cylinder, and a second clamping jaw fixed on the second clamping arm of the clamping cylinder. The first clamping jaw is provided with a first arc-shaped portion for clamping the first side of the upper ring of the mold shell, and the inner side wall of the first arc-shaped portion is provided with a first arc-shaped groove for the first side of the upper ring of the mold shell to be embedded. The second clamping jaw is provided with a second arc-shaped portion for clamping the second side of the upper ring of the mold shell, and the inner side wall of the second arc-shaped portion is provided with a second arc-shaped groove for the second side of the upper ring of the mold shell to be embedded.

3. The mold shell transfer mechanism for an aircraft engine blade precision casting furnace according to claim 2, characterized in that: The first clamping jaw further includes a first connecting portion fixedly connected to the first arc-shaped portion, the first connecting portion is provided with a first connecting hole, and the first clamping arm is provided with a second connecting hole at a position corresponding to the first connecting hole; The second clamping jaw further includes a second connecting portion fixedly connected to the second arc-shaped portion, a third connecting hole is provided on the second connecting portion, and a fourth connecting hole is provided on the second clamping arm at a position corresponding to the third connecting hole.

4. The mold shell transfer mechanism for an aircraft engine blade precision casting furnace according to claim 2, characterized in that: The connecting seat includes an annular connecting portion, a first connecting block fixed to a first side of the annular connecting portion, and a second connecting block fixed to a second side of the annular connecting portion. The first connecting block is provided with a plurality of fifth connecting holes, the second connecting block is provided with a plurality of sixth connecting holes, a center hole is provided in the middle of the annular connecting portion, and the annular connecting portion is provided with a plurality of seventh connecting holes.

5. The mold shell transfer mechanism for an aircraft engine blade precision casting furnace according to claim 2, characterized in that: The gripping device further includes a pressure sensor disposed in the gripping cylinder for detecting the output force of the gripping cylinder, and a controller disposed outside the gripping cylinder and electrically connected to the pressure sensor for controlling the output force of the gripping cylinder.

Images