Die for machining lower skin of wing

Abstract

The utility model discloses a die for machining a wing lower skin, and relates to the field of dies for machining wing lower skins. The machining device comprises a machining die, the machining die comprises a lower die and an upper die, a limiting mechanism is arranged on the outer side of the lower die, the limiting mechanism, a first air cylinder, a limiting fence and a discharging slope plate are arranged, and the first air cylinder drives the limiting fence to ascend and descend to achieve working state switching. For example, when the fence rises, a rigid limiting boundary is formed to ensure accurate positioning of the skin, and after descending, a height difference is formed between the skin and the lower die groove to create an operation space for a pushing mechanism. Under the control of signals triggered by alignment of the photoelectric sensor and the receiving end, the push block is pushed by the second air cylinder to stably transfer the formed skin to the discharging slope plate with the pulley, the formed skin automatically slides out of a collecting area through the inclined angle of the slope, and the risks of skin scratching and the like caused by manual contact are thoroughly eliminated.

Description

Technical Field

[0001] This utility model relates to the field of molds for processing underwing skin, specifically a mold for processing underwing skin. Background Technology

[0002] A mold for processing underwing skin is a precision manufacturing tool specifically designed for forming aircraft underwing skin. It is designed and manufactured based on the complex curved shape, precise dimensional requirements, and specific material properties of the underwing skin to ensure that the final processed underwing skin meets the stringent standards for aerodynamic performance, structural strength, and lightweighting during aircraft flight.

[0003] Even though current molds for processing underwing skin have push blocks in the mold slots to facilitate demolding, the demolded skin pieces still need to be removed manually before the next one can be processed. This method not only increases the labor intensity of operators but also reduces production efficiency. Especially in batch processing, manual material handling can easily lead to longer cycle times and there is a risk of scratches or deformation of the skin surface due to improper operation. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a mold for processing the underwing skin, so as to solve the technical problems of low production efficiency, high labor intensity and easy damage to the skin surface caused by the reliance on manual material handling in existing molds.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold for processing the lower skin of an aircraft wing, comprising a processing mold, wherein the processing mold includes a lower mold and an upper mold, and a limiting mechanism is provided on the outer side of the lower mold;

[0006] The limiting mechanism includes a limiting fence, which is set around the lower mold. Four first cylinders are set at the four corners of the bottom of the limiting fence, and the four first cylinders are arranged in a rectangular array. A feeding ramp is set on one side of the limiting fence, and multiple pulleys are set on the feeding ramp.

[0007] By adopting the above technical solution, the limiting mechanism set on the outside is integrated with the limiting fence and the material feeding slope to realize the integration of positioning and conveying functions; the pulley reduces the sliding friction damage of the skin, and the four first cylinders improve the stability of the fence lifting and lowering.

[0008] Furthermore, when the limiting fence is higher than the lower mold groove, it is used to limit the skin sheet; when the limiting fence is lower than the lower mold groove, it facilitates rapid material unloading.

[0009] By adopting the above technical solution, the height of the limiting fence can be adjusted to switch between positioning and unloading functions: when raised, it constrains the skin boundary, and when lowered, it forms a pushing channel, avoiding manual intervention.

[0010] Furthermore, a receiving end is installed on the other side of the limiting fence, and a sensing mechanism is provided on one side of the processing mold. The sensing mechanism includes a second mounting frame on which a photoelectric sensor is installed.

[0011] By adopting the above technical solution, the receiving end and the photoelectric sensor are aligned with the trigger control signal to achieve accurate timing judgment of the demolding action.

[0012] Furthermore, after the photoelectric sensor is parallel to the receiving end, it sends an electrical signal to the central control equipment and controls the pushing mechanism to unload the formed skin sheet.

[0013] By adopting the above technical solution, the photoelectric sensor and the receiving end trigger signals in parallel to control the pushing mechanism, ensuring absolute synchronization between the pushing action and the lowering state of the fence.

[0014] Furthermore, a pushing mechanism is provided on the side of the sensing mechanism away from the processing mold, and the pushing mechanism includes a first mounting bracket.

[0015] By adopting the above technical solution, the feeding mechanism is independently set on the side of the mold through the first mounting bracket, which simplifies the transmission structure and facilitates maintenance.

[0016] Furthermore, a second cylinder is installed on the first mounting bracket, and a push block is fixedly connected to the output end of the second cylinder. After the second cylinder is started, it can be used to push the skin sheet onto the feeding ramp.

[0017] By adopting the above technical solution, the second cylinder drives the pusher block to horizontally push the skin to the unloading slope, avoiding the risk of deformation when manually handling the material.

[0018] Furthermore, the top of the lower mold is provided with a lower mold groove, the bottom of the lower mold groove is provided with a base, and the outer side of the base is fixedly connected to the first cylinder.

[0019] By adopting the above technical solution, the base integrates and fixes the first cylinder, which enhances the rigidity of the lifting mechanism and absorbs operational vibration.

[0020] Furthermore, an upper mold is provided above the lower mold, and an upper module is provided at the bottom of the upper mold. The upper module fits into the lower mold groove. Guide rods are provided on both sides of the upper mold, and side ears are provided on both sides of the limiting fence. Guide holes are opened on the side ears, and the guide rods pass through the guide holes for aligning the lower mold and the upper mold. A cylinder seat is provided on the top of the upper mold, and the cylinder seat is fixedly connected to an external pressing cylinder.

[0021] By adopting the above technical solution, the guide rod passes through the side ear to limit the displacement path of the fence, and simultaneously ensures the alignment accuracy of the mold closing.

[0022] In summary, the present invention has the following main advantages:

[0023] This utility model incorporates a limiting mechanism, a first cylinder, a limiting fence, a discharge ramp, pulleys, side ears, a receiving end, a pushing mechanism, a first mounting frame, a second cylinder, a pushing block, a sensing mechanism, a second mounting frame, and a photoelectric sensor. The first cylinder drives the limiting fence to rise and fall, switching between working states. For example, when the fence rises, it forms a rigid limiting boundary, ensuring precise positioning of the skin. When it falls, it creates a height difference with the lower mold groove, providing working space for the pushing mechanism. Under the signal control of the photoelectric sensor and the receiving end, the pushing block is pushed by the second cylinder to smoothly transfer the formed skin to the discharge ramp with pulleys, automatically sliding out of the collection area using the inclined surface angle. The guide rod's design, passing through the side ears of the limiting fence, simultaneously ensures the positioning accuracy of the upper and lower molds, forming a fully enclosed automated process of pressing, positioning, demolding, and conveying, completely eliminating the risk of skin scratches caused by manual contact. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the test cross-section of this utility model;

[0027] Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0028] In the diagram: 1. Processing mold; 101. Lower mold; 102. Lower mold groove; 103. Base; 104. Upper mold; 105. Cylinder seat; 106. Upper module; 107. Guide rod; 2. Limiting mechanism; 201. First cylinder; 202. Limiting fence; 203. Discharge ramp; 204. Pulley; 205. Side lug; 206. Receiving end; 3. Pushing mechanism; 301. First mounting frame; 302. Second cylinder; 303. Push block; 4. Sensing mechanism; 401. Second mounting frame; 402. Photoelectric sensor. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] A mold for processing the underwing skin, such as Figure 1-4As shown, it includes a processing mold 1, which includes a lower mold 101 and an upper mold 104. A limit mechanism 2 is provided on the outer side of the lower mold 101.

[0031] The limiting mechanism 2 includes a limiting fence 202, which is located around the lower mold 101. Four first cylinders 201 are located at the four corners of the bottom of the limiting fence 202 and are arranged in a rectangular array. A feeding ramp 203 is located on one side of the limiting fence 202, and multiple pulleys 204 are provided on the feeding ramp 203. The first cylinders 201 drive the limiting fence 202 to achieve dual-state switching of peripheral positioning and avoidance. The feeding ramp 203 and the fence are integrated to receive the formed skin output by the pushing mechanism. The pulleys 204 on it reduce the risk of scratches on the skin surface by using rolling friction instead of sliding friction. The rectangular array of four cylinders ensures the horizontality of the fence during the lifting process and avoids jamming caused by uneven load. The whole structure forms a pure mechanical linkage structure of positioning and conveying.

[0032] See Figure 1 , Figure 2 When the limiting fence 202 is higher than the lower mold groove 102, it is used to limit the skin sheet. When the limiting fence 202 is lower than the lower mold groove 102, it facilitates rapid material unloading. When the limiting fence 202 is raised to be higher than the lower mold groove 102, it forms a rigid positioning boundary to ensure that the skin does not shift during the pressing process. When it is lowered to be lower than the lower mold groove 102, it forms a height difference with the edge of the mold groove, creating a horizontal pushing space for the push block 303, eliminating the operation of manually removing obstructions required by traditional molds, and directly avoiding contact damage from a physical level.

[0033] See Figure 1 , Figure 4 A receiver 206 is installed on the other side of the limiting fence 202, and a sensing mechanism 4 is provided on one side of the processing mold 1. The sensing mechanism 4 includes a second mounting frame 401, on which a photoelectric sensor 402 is installed. After the receiver 206 installed on the limiting fence 202 and the photoelectric sensor 402 on the second mounting frame 401 are spatially aligned, a closed-loop signal path is formed. The state of the fence descending to the preset position is determined in a non-contact manner, triggering the action signal of the pushing mechanism 3, thus avoiding mechanism interference or empty action caused by human judgment error.

[0034] See Figure 3 , Figure 4 After the photoelectric sensor 402 is parallel to the receiver 206, it sends an electrical signal to the central control equipment and controls the pushing mechanism 3 to unload the formed skin sheet. When the photoelectric sensor 402 transmitter and receiver 206 are parallel and aligned, an electrical signal is generated. Based on this, the central control equipment accurately controls the start-up sequence of the second cylinder 302 to ensure that the push block 303 only performs the pushing action after the limit fence 202 has completely descended and left the interference area, thus preventing the risk of mechanical collision from the source of control logic.

[0035] See Figure 1 , Figure 2 A pusher mechanism 3 is provided on the side of the sensing mechanism 4 away from the processing mold 1. The pusher mechanism 3 includes a first mounting frame 301. The pusher mechanism 3, which is located at the far end of the sensing mechanism 4, is based on the first mounting frame 301 as a mounting platform, so that moving parts such as cylinders and push blocks are separated from the mold body, reducing the impact of mold closing vibration on the pusher accuracy. The modular layout avoids the design of oil circuit / electrical circuit through the mold, improving maintainability.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A second cylinder 302 is installed on the first mounting bracket 301. A push block 303 is fixedly connected to the output end of the second cylinder 302. After the second cylinder 302 is started, it can be used to push the skin sheet onto the unloading slope plate 203. The push block 303, which is rigidly connected to the output end of the second cylinder 302, pushes the formed skin at a constant speed along the direction parallel to the lower mold groove 102, so that the skin is moved as a whole to the inclined surface of the unloading slope plate 203 with pulley 204. The equal thrust pushing mechanism avoids the micro deformation of the skin caused by local stress concentration and completely replaces manual operation.

[0037] See Figure 1 The lower mold 101 has a lower mold groove 102 at its top and a base 103 at its bottom. The outer side of the base 103 is fixedly connected to the first cylinder 201. The base 103 connected to the bottom of the lower mold groove 102 provides a mounting base for the first cylinder 201. Its wide contact surface suppresses the micro-vibration of the mold caused by the reaction force of the cylinder. The mechanical transmission chain of cavity-base-cylinder improves the stability of the lifting process of the fence 202 and ensures the positioning accuracy.

[0038] See Figure 1 , Figure 4 An upper mold 104 is provided above the lower mold 101, and an upper module 106 is provided at the bottom of the upper mold 104. The upper module fits into the lower mold groove 102. Guide rods 107 are provided on both sides of the upper mold 104, and side ears 205 are provided on both sides of the limiting fence 202. The side ears 205 have guide holes, and the guide rods 107 pass through the guide holes to align the lower mold 101 and the upper mold 104. A cylinder seat 105 is provided on the top of the upper mold 104, and the cylinder seat 105 is fixedly connected to an external pressing cylinder. The guide rods 107 on both sides of the upper mold 104 pass through the guide holes of the side ears 205 of the limiting fence 202, constraining it to move only in the vertical direction during the lifting and lowering of the fence. When the mold is closed, the gap fit between the guide rods 107 and the side ears 205 forcibly corrects the coaxiality of the upper module 106 and the lower mold groove 102, eliminating the cumulative positioning error caused by the displacement of the fence.

[0039] The implementation principle of this embodiment is as follows: First, the first cylinder 201 drives the limiting fence 202 to rise above the lower mold groove 102, so that the fence forms a rigid boundary, constraining the position of the skin plate placed in the lower mold groove 102, and ensuring the accurate positioning of the upper module 106 when it is pressed down; after pressing is completed, the first cylinder 201 drives the limiting fence 202 to fall below the lower mold groove 102, eliminating the obstruction of the skin plate; at this time, the guide rod 107 passes through the guide hole of the side ear 205 to maintain the axial alignment of the upper and lower molds when they are closed.

[0040] Subsequently, the transmitter and receiver 206 of the photoelectric sensor 402 are aligned with the trigger signal, and the central control equipment controls the second cylinder 302 to push the pusher block 303 to push the formed skin sheet horizontally to the unloading slope plate 203; after the skin sheet contacts the inclined surface of the slope plate with pulley 204, it automatically slides out of the mold working area along the inclination angle under the action of gravity, without any manual intervention throughout the process.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A mold for processing the underwing skin, characterized in that: The processing mold (1) includes a lower mold (101) and an upper mold (104), and a limit mechanism (2) is provided on the outer side of the lower mold (101). The limiting mechanism (2) includes a limiting fence (202), which is located around the lower mold (101). Four first cylinders (201) are provided at the four corners of the bottom of the limiting fence (202), and the four first cylinders (201) are arranged in a rectangular array. A feeding ramp (203) is provided on one side of the limiting fence (202), and multiple pulleys (204) are provided on the feeding ramp (203).

2. The mold for processing the underwing skin according to claim 1, characterized in that: When the limiting fence (202) is higher than the lower mold groove (102), it is used to limit the skin sheet. When the limiting fence (202) is lower than the lower mold groove (102), it is convenient for quick material unloading.

3. The mold for processing the underwing skin according to claim 1, characterized in that: A receiver (206) is installed on the other side of the limiting fence (202), and a sensing mechanism (4) is provided on one side of the processing mold (1). The sensing mechanism (4) includes a second mounting frame (401), on which a photoelectric sensor (402) is installed.

4. The mold for processing the underwing skin according to claim 3, characterized in that: After the photoelectric sensor (402) is parallel to the receiving end (206), it sends an electrical signal to the central control equipment and controls the pushing mechanism (3) to unload the formed skin sheet.

5. The mold for processing the underwing skin according to claim 3, characterized in that: The sensing mechanism (4) is provided with a pushing mechanism (3) on the side away from the processing mold (1), and the pushing mechanism (3) includes a first mounting bracket (301).

6. The mold for processing the underwing skin according to claim 5, characterized in that: A second cylinder (302) is installed on the first mounting bracket (301). A push block (303) is fixedly connected to the output end of the second cylinder (302). After the second cylinder (302) is started, it can be used to push the skin sheet onto the feeding slope plate (203).

7. The mold for processing the underwing skin according to claim 1, characterized in that: The lower mold (101) has a lower mold groove (102) at its top and a base (103) at its bottom. The outer side of the base (103) is fixedly connected to the first cylinder (201).

8. The mold for processing the underwing skin according to claim 1, characterized in that: An upper mold (104) is provided above the lower mold (101), and an upper module (106) is provided at the bottom of the upper mold (104). The upper module fits into the lower mold groove (102). Guide rods (107) are provided on both sides of the upper mold (104). Side ears (205) are provided on both sides of the limiting fence (202). Guide holes are provided on the side ears (205), and the guide rods (107) pass through the guide holes to align the lower mold (101) and the upper mold (104). A cylinder seat (105) is provided on the top of the upper mold (104), and the cylinder seat (105) is fixedly connected to an external pressing cylinder.

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