A heat shield bending mold and equipment for aircraft engines and a method of using the same

Abstract

The present invention belongs to the field of aircraft engine technology, and in particular to a heat shield bending mold, equipment and use method for aircraft engines. In view of the problem in the prior art that the plate cannot be cut directly after being bent and the plate may be displaced, the following scheme is proposed, which includes: a lower mold and an upper mold, the top of the lower mold is provided with a limiting groove for limiting the plate, the lower mold is provided with a molding groove connected to the limiting groove, and the molding groove is provided with a plurality of through holes for adsorbing the plate. In the present invention, after the upper mold moves downward to complete the bending of the plate, it moves upward, and the upward movement of the template drives the rotating rod to rotate, and the rotating rod pushes the sliding disk and the fixed rod to move downward to complete the adsorption of the plate, which is convenient for the later cutting of the plate. In addition, when the rotating disk drives the protrusion to rotate, the protrusion pushes the U-shaped block to move toward the rotating disk through the cooperation of the first rack, the gear and the second rack, so that the cutting tool can complete the cutting of the plate.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engines, and in particular to a heat shield bending die and equipment for an aero-engine and a use method thereof. Background Art

[0002] An aircraft engine is a highly complex and sophisticated thermal machine. As the heart of an aircraft, it is not only the driving force for the aircraft's flight, but also an important driving force for the development of the aviation industry. Every important change in human aviation history is closely related to the technological progress of aircraft engines. The heat shield of the engine needs to be bent during the production and processing process.

[0003] For example, in the utility model with announcement number CN215587626U, the bending of the heat insulation cover is achieved by squeezing the plate into the forming groove by the forming block.

[0004] However, the prior art still has the following shortcomings when bending:

[0005] 1. After the sheet is bent, it needs to be taken out manually and sent to the next process to cut the excess waste at the corners of the sheet. It is impossible to cut directly after the sheet is bent, which increases the forming process and affects production efficiency;

[0006] 2. When the forming block extrude and bends the plate, the plate will be displaced. When the displacement distance is large, the plate bending will fail.

[0007] In view of the above problems, the present invention document proposes a heat shield bending mold and equipment and a method of use for an aircraft engine. Summary of the invention

[0008] The present invention provides a bending die and equipment for a heat shield for an aero-engine and a method for using the same, which solve the shortcomings of the prior art that a plate cannot be cut directly after being bent and the plate may be displaced.

[0009] The present invention provides the following technical solutions:

[0010] A heat shield bending die for an aircraft engine, comprising:

[0011] The lower mold and the upper mold are provided with a limiting groove on the top of the lower mold for limiting the plate, and a forming groove connected with the limiting groove is provided in the lower mold, and a plurality of through holes for adsorbing the plate are provided in the forming groove.

[0012] In a possible design, a plurality of slots are provided on one side of the lower mold, and an annular friction pad for preventing displacement of the plate is fixedly embedded in the bottom of the upper mold.

[0013] The bending device of the heat shield for an aircraft engine as described above comprises:

[0014] A bottom plate, a top of the bottom plate is fixedly connected to a plurality of support rods, a top plate is fixedly connected to the tops of the plurality of support rods, and a rotating disk is rotatably connected to the top of the bottom plate;

[0015] The adsorption component is arranged in the rotating disk and is used to adsorb the plate in the forming groove to facilitate the later cutting of the plate;

[0016] A driving assembly, arranged at the bottom of the top plate, for driving the adsorption assembly;

[0017] The cutting assembly is set on the top of the bottom plate and is used to cut the excess plate after bending.

[0018] In one possible design, the driving assembly includes a cylinder fixedly connected to the bottom of the top plate, the output shaft of the cylinder is fixedly connected to the template, and the bottom of the template is fixedly connected to the top of the upper mold, one side of the bottom of the template is fixedly connected to a fixed block, one side of the lower mold is slidably connected to a slide plate, one side of the lower mold is rotatably connected to a rotating rod, and the bottom of one end of the rotating rod touches the top of the slide plate.

[0019] In one possible design, the adsorption assembly includes a cavity arranged in a rotating disk, and a through hole is connected to the cavity, a sliding disk is slidably connected in the cavity, a plurality of springs are fixedly connected to the bottom of the sliding disk, and the bottom end of the spring is fixedly connected to the bottom inner wall of the cavity, a plurality of fixing rods are fixedly connected to the top of the sliding disk, and the top end of the fixing rod extends into the through hole and is fixedly connected to a sealing piston, and the sealing piston is sealingly and slidably connected to the through hole, a rectangular hole connected to the cavity is provided in the rotating disk, a sliding rod fixedly connected to the sliding disk is slidably connected in the rectangular hole, and the end of the sliding rod away from the sliding disk is fixedly connected to the slide plate.

[0020] In one possible design, the cutting assembly includes an annular groove arranged at the top of the base plate, the outer wall of the rotating disk is fixedly connected with a plurality of protrusions located in the annular groove, the base plate is provided with a sliding groove connected to the annular groove, the top of the base plate is rotatably connected with a gear through a base, a first rack extending into the annular groove is slidably connected in the sliding groove, and the top of the first rack is meshed with the gear, the top of the base plate is slidably connected with a U-shaped block, the side of the U-shaped block away from the rotating disk is fixedly connected with a second rack meshed with the gear, the top of the base plate is fixedly connected with a fixed plate, and the end of the second rack away from the U-shaped block slides through the fixed plate, the top of the U-shaped block is fixedly connected with a rotating motor, the output shaft of the rotating motor is fixedly connected with a cutting tool for cutting a plate, a driving motor is fixedly connected in the base plate, and the output shaft of the driving motor is fixedly connected to the bottom of the rotating disk.

[0021] In a possible design, a trapezoidal pin that is engaged with the slot slides through the slide, and the end of the trapezoidal pin away from the lower mold is fixedly connected to a fixed plate, and the outer wall of the trapezoidal pin is sleeved with a tension spring fixedly connected to the fixed plate, and the end of the tension spring away from the fixed plate is fixedly connected to the slide, and the side of the fixed block close to the slide is rotatably connected to a rotating block through a base, and the side of the fixed block close to the slide is fixedly connected to a limit block for limiting the rotating block. When the fixed block drives the rotating block to move upward, due to the limitation of the rotating block by the limit block, the rotating block can drive the rotating rod to rotate clockwise, and one end of the rotating rod pushes the slide and the sliding rod to move down a certain distance, thereby enabling the fixing rod and the sealing piston to move down, thereby completing the adsorption of the plate.

[0022] In a possible design, the top of the sealing piston located in the middle extends into the molding groove. When the trapezoidal pin releases the brakes on the sliding plate and the slide plate, the sliding plate pushes the fixed rod and the sealing piston upward under the elastic force of the spring. The sealing piston located in the middle extends into the molding groove under the action of the spring and the fixed rod, and can push out the plate fitted in the molding groove, making it convenient for later collection by the staff.

[0023] In one possible design, a baffle for shielding debris is fixedly connected to the top of the base plate, a collecting trough for collecting debris is provided on the top of the base plate, an infrared transmitter is fixedly connected to the top of the lower mold, a groove aligned with the infrared transmitter is provided at the bottom of the template, an infrared receiver is fixedly connected to the top inner wall of the groove, and the infrared receiver receives infrared rays emitted by the infrared transmitter, so that the lower mold can be aligned with the upper mold after rotation, which is convenient for subsequent bending, and the baffle can block the debris generated during cutting and make the debris fall into the collecting trough, so as to prevent the debris from splashing and causing harm to the staff.

[0024] The method for using the bending device of the heat shield for an aircraft engine comprises the following steps:

[0025] S1. Place the circular plate in the limiting groove, limit the plate through the limiting groove, start the cylinder, and the output shaft of the cylinder pushes the template and the upper mold to move downward. During the downward movement, the upper mold squeezes the plate into the forming groove to complete the bending of the plate. When the template moves downward, the fixed block drives the rotating block to move downward, and the rotating block touches one end of the rotating rod. The rotating block starts to rotate counterclockwise until the rotating block is completely located under the rotating rod, and the rotating block rotates in the opposite direction to reset under the action of its own gravity;

[0026] S2. When the upper mold completes the bending of the sheet, the sheet is tightly attached to the inner wall of the forming groove. Then, the output shaft of the cylinder drives the upper mold and the template to move upward. Since the rotating block is located below the rotating rod, when the fixed block drives the rotating block to move upward, the rotating block drives the rotating rod to rotate. After one end of the rotating rod pushes the slide plate and the slide bar to move downward for a certain distance, the rotating block and the rotating rod are separated from each other. The trapezoidal pin is re-engaged in the slot under the tension of the tension spring, thereby braking the slide plate and the slide bar.

[0027] S3. When the slide rod moves downward, the slide rod drives the slide plate and multiple fixed rods to move downward, the spring starts to compress, and the fixed rod drives the sealing piston to move downward. Since the sealing piston is in sealing sliding connection with the through hole, after the sealing piston moves downward, the space above the sealing piston in the through hole is in a negative pressure state, so that the bent sheet can be tightly adsorbed in the forming groove;

[0028] S4, then start the infrared transmitter and the infrared receiver, the infrared rays emitted by the infrared transmitter are received by the infrared receiver, at this time the upper mold is aligned with the lower mold, the driving motor is started to drive the rotating disk and the lower mold to rotate, the rotating disk drives the protrusion to rotate, the protrusion touches the first rack, the protrusion pushes the first rack to the right, the first rack is meshed with the gear, the gear is meshed with the second rack, and then the first rack moves to the right to drive the second rack and the U-shaped block to move to the left, the rotating motor is started to drive the cutting tool to rotate, when the U-shaped block moves, the cutting tool cuts the excess plate, and as the rotating disk and the lower mold rotate, the cutting tool gradually cuts a circle of the plate;

[0029] S5. When the cutting tool cuts the plate, the baffle can block the debris generated during cutting and make the debris fall into the collection trough to prevent the debris from splashing and causing harm to the staff. The rotating disk and the lower mold continue to rotate. When the infrared light emitted by the infrared transmitter is received by the infrared receiver, the rotating disk stops rotating. At this time, the upper mold and the lower mold are aligned again to facilitate the subsequent bending. Then the trapezoidal pin is pulled outward to release the brake of the trapezoidal pin on the slide. The slide, slide rod and sliding disk push the fixed rod and the sealing piston upward under the elastic force of the spring. The sealing piston located in the middle extends into the molding groove under the action of the fixed rod, thereby being able to eject the plate in the molding groove for easy collection.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0031] In the present invention, the output shaft of the cylinder is fixedly connected with the template, and the bottom of the template is fixedly connected with the top of the upper mold, one side of the bottom of the template is fixedly connected with a fixed block, one side of the lower mold is slidably connected with a slide plate, one side of the lower mold is rotatably connected with a rotating rod, and the bottom of one end of the rotating rod touches the top of the slide plate, when the output shaft of the cylinder drives the template and the upper mold to move downward, the bending of the plate can be completed, and the upward movement of the template and the upper mold can make the rotating block drive the rotating rod to rotate clockwise, so as to complete the adsorption of the plate and prevent the plate from moving when the plate is cut later;

[0032] In the present invention, a sliding disk is slidably connected in the cavity, a plurality of fixing rods are fixedly connected to the top of the sliding disk, and a sealing piston is fixedly connected to the top of the fixing rod. The end of the sliding rod away from the sliding disk is fixedly connected to the slide plate. When the sliding rod moves down, the sliding disk and the plurality of fixing rods move down at the same time. Since the sealing piston is sealingly slidably connected to the through hole, after the sealing piston moves down, the space above the sealing piston in the through hole is in a negative pressure state, so that the bent sheet can be tightly adsorbed in the forming groove, the sheet is fixed, and it is convenient for cutting the sheet later.

[0033] In the present invention, a plurality of protrusions are fixedly connected to the outer wall of the rotating disk, a gear is rotatably connected to the top of the lower mold, a first rack is slidably connected in the sliding groove, and the top of the first rack is meshed with the gear, a U-shaped block is slidably connected to the top of the lower mold, and a second rack meshed with the gear is fixedly connected to the side of the U-shaped block away from the rotating disk, the rotating disk drives the protrusion to rotate, the protrusion touches the first rack, the protrusion pushes the first rack to the right, and the second rack moves to the left under the action of the gear, and the cutting tool cuts the excess plate;

[0034] In the present invention, a limiting groove for limiting the position of the plate is provided on the top of the lower mold, and an annular friction pad for preventing the plate from being displaced is fixedly embedded on the bottom of the upper mold. When the plate is placed in the limiting groove, the limiting groove can limit the plate to prevent the plate from being displaced when the plate is bent later, and the annular friction pad can increase the friction between the upper mold and the plate to further prevent the plate from being offset.

[0035] In the present invention, the upper mold moves upward after moving downward to complete the bending of the plate. The upward movement of the template drives the rotating rod to rotate, and the rotating rod pushes the sliding disk and the fixed rod to move downward to complete the adsorption of the plate, which is convenient for the later cutting of the plate. In addition, when the rotating disk drives the protrusion to rotate, the protrusion pushes the U-shaped block to move toward the rotating disk through the cooperation of the first rack, the gear and the second rack, so that the cutting tool can complete the cutting of the plate, and can automatically cut after the plate is bent, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1A schematic diagram of the three-dimensional structure of a lower mold of a heat shield bending mold for an aircraft engine provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the three-dimensional structure of an upper mold of a bending mold for a heat shield for an aero-engine provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the three-dimensional structure of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of a lower mold of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of the three-dimensional structure of a driving assembly of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the three-dimensional structure of a bottom plate of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention;

[0043] Figure 8 A schematic diagram of the front cross-sectional structure of a cutting assembly of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention;

[0044] Fig. 9 It is a schematic diagram of a side cross-sectional structure of a bending device for a heat shield for an aircraft engine provided by an embodiment of the present invention in embodiment 2.

[0045] Reference numerals:

[0046] 1. Lower mold; 2. Limiting groove; 3. Forming groove; 4. Through hole; 5. Card slot; 6. Upper mold; 7. Annular friction pad; 8. Bottom plate; 9. Support rod; 10. Top plate; 11. Template; 12. Cylinder; 13. Rotating disk; 14. Driving motor; 15. Cavity; 16. Sliding disk; 17. Spring; 18. Fixed rod; 19. Sealing piston; 20. Rectangular hole; 21. Sliding rod; 22. Slide plate; 23. Trapezoidal pin; 24. Fixed plate; 25, tension spring; 26, rotating rod; 27, fixed block; 28, rotating block; 29, limit block; 30, annular groove; 31, protrusion; 32, sliding groove; 33, first rack; 34, gear; 35, fixed plate; 36, second rack; 37, U-shaped block; 38, rotating motor; 39, cutting tool; 40, baffle; 41, collecting tank; 42, groove; 43, infrared receiver; 44, infrared transmitter. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0049] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0050] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present invention. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0052] Example 1

[0053] Reference Figure 1 and Figure 2 The aero-engine heat shield bending mold of this embodiment comprises: a lower mold 1 and an upper mold 6. A limiting groove 2 for limiting the position of a plate is provided on the top of the lower mold 1. A forming groove 3 connected to the limiting groove 2 is provided in the lower mold 1. A plurality of through holes 4 for adsorbing the plate are provided in the forming groove 3. A plurality of card slots 5 are provided on one side of the lower mold 1. An annular friction pad 7 for preventing the plate from being displaced is fixedly installed at the bottom of the upper mold 6 by bolts. When the plate is placed in the limiting groove 2, the limiting groove 2 can limit the plate to prevent the plate from being displaced when the plate is bent later, and the annular friction pad 7 can increase the friction between the upper mold 6 and the plate to further prevent the plate from being offset.

[0054] Reference Figure 3 and Figure 4 As mentioned above, a bending device for a heat shield for an aircraft engine includes: a bottom plate 8, a plurality of support rods 9 are fixedly connected to the top of the bottom plate 8 by bolts, a top plate 10 is fixedly connected to the top of the plurality of support rods 9 by bolts, a rotating disk 13 is rotatably connected to the top of the bottom plate 8, an adsorption component is arranged in the rotating disk 13, and is used to adsorb the sheet in the forming groove 3 to facilitate the later cutting of the sheet, a driving component is arranged at the bottom of the top plate 10, and is used to drive the adsorption component, and a cutting component is arranged at the top of the bottom plate 8, and is used to cut the excess sheet after bending.

[0055] Reference Figure 4The driving assembly includes a cylinder 12 fixedly connected to the bottom of the top plate 10 by bolts, the output shaft of the cylinder 12 is fixedly connected to the template 11 by bolts, and the bottom of the template 11 is fixedly connected to the top of the upper mold 6 by bolts, and one side of the bottom of the template 11 is fixedly connected to a fixed block 27 by bolts, one side of the lower mold 1 is slidably connected to a slide plate 22, one side of the lower mold 1 is rotatably connected to a rotating rod 26, and the bottom of one end of the rotating rod 26 touches the top of the slide plate 22, when the output shaft of the cylinder 12 drives the template 11 and the upper mold 6 to move downward, the bending of the plate can be completed, and the upward movement of the template 11 and the upper mold 6 can make the rotating block 28 drive the rotating rod 26 to rotate clockwise, complete the adsorption of the plate, and prevent the plate from moving when the plate is cut later.

[0056] Reference Figure 5 The adsorption assembly includes a cavity 15 disposed in the rotating disk 13, and the through hole 4 is connected to the cavity 15. A sliding disk 16 is slidably connected in the cavity 15. A plurality of springs 17 are fixedly connected to the bottom of the sliding disk 16, and the bottom end of the spring 17 is fixedly connected to the bottom inner wall of the cavity 15. A plurality of fixing rods 18 are fixedly connected to the top of the sliding disk 16 by bolts, and the top end of the fixing rod 18 extends into the through hole 4 and is fixedly connected to a sealing piston 19, and the sealing piston 19 is sealingly and slidably connected to the through hole 4. A torque connected to the cavity 15 is provided in the rotating disk 13. shaped hole 20, a slide rod 21 fixedly connected to the sliding disk 16 is slidably connected in the rectangular hole 20, and one end of the slide rod 21 away from the sliding disk 16 is fixedly connected to the slide plate 22 by bolts. When the slide rod 21 moves downward, the sliding disk 16 and multiple fixed rods 18 move downward at the same time. Since the sealing piston 19 is sealed and slidably connected to the through hole 4, after the sealing piston 19 moves downward, the space above the sealing piston 19 in the through hole 4 is in a negative pressure state, so that the bent sheet can be tightly adsorbed in the forming groove 3 to fix the sheet, which is convenient for the later cutting of the sheet.

[0057] Reference Figure 7 and Figure 8The cutting assembly includes an annular groove 30 arranged on the top of the bottom plate 8, a plurality of protrusions 31 located in the annular groove 30 are fixedly connected to the outer wall of the rotating disk 13, a sliding groove 32 connected to the annular groove 30 is provided in the bottom plate 8, a gear 34 is rotatably connected to the top of the bottom plate 8 through the base, a first rack 33 extending into the annular groove 30 is slidably connected in the sliding groove 32, and the top of the first rack 33 is meshed with the gear 34, a U-shaped block 37 is slidably connected to the top of the bottom plate 8, and a second rack 36 meshed with the gear 34 is fixedly connected to the side of the U-shaped block 37 away from the rotating disk 13 by bolts, and the top of the bottom plate 8 is fixedly connected by bolts There is a fixed plate 35, and the end of the second rack 36 away from the U-shaped block 37 slides through the fixed plate 35, the top of the U-shaped block 37 is fixedly connected with a rotating motor 38, the output shaft of the rotating motor 38 is fixedly connected with a cutting tool 39 for cutting the plate, the bottom plate 8 is fixedly connected with a driving motor 14 by bolts, and the output shaft of the driving motor 14 is fixedly connected to the bottom of the rotating disk 13, the rotating disk 13 drives the protrusion 31 to rotate, the protrusion 31 touches the first rack 33, the protrusion 31 pushes the first rack 33 to the right, the second rack 36 moves to the left under the action of the gear 34, and the cutting tool 39 cuts the excess plate.

[0058] Reference Figure 6 A trapezoidal pin 23 that engages with the card slot 5 slides through the slide plate 22, and the end of the trapezoidal pin 23 away from the lower mold 1 is fixedly connected to the fixed plate 24 by bolts. The outer wall of the trapezoidal pin 23 is provided with a tension spring 25 fixedly connected to the fixed plate 24, and the end of the tension spring 25 away from the fixed plate 24 is fixedly connected to the slide plate 22. The side of the fixed block 27 close to the slide plate 22 is rotatably connected with a rotating block 28 through a base, and the side of the fixed block 27 close to the slide plate 22 is fixedly connected with a limit block 29 for limiting the rotating block 28 by bolts. When the fixed block 27 drives the rotating block 28 to move upward, due to the limitation of the rotating block 28 by the limit block 29, the rotating block 28 can drive the rotating rod 26 to rotate clockwise, and one end of the rotating rod 26 pushes the slide plate 22 and the slide rod 21 to move down a certain distance, so that the fixed rod 18 and the sealing piston 19 can be moved down, thereby completing the adsorption of the plate.

[0059] Reference Figure 5 The top of the sealing piston 19 located in the middle extends into the molding groove 3. When the trapezoidal pin 23 releases the brakes on the sliding plate 16 and the slide plate 22, the sliding plate 16 pushes the fixing rod 18 and the sealing piston 19 upward under the elastic force of the spring 17. The sealing piston 19 located in the middle extends into the molding groove 3 under the action of the spring 17 and the fixing rod 18, which can push out the plate fitted in the molding groove 3, making it convenient for the staff to collect it later.

[0060] Example 2

[0061] Reference Figure 1 and Figure 2 The aero-engine heat shield bending die of this embodiment includes:

[0062] The lower mold 1 and the upper mold 6, the top of the lower mold 1 is provided with a limiting groove 2 for limiting the plate, the lower mold 1 is provided with a forming groove 3 connected with the limiting groove 2, the forming groove 3 is provided with a plurality of through holes 4 for adsorbing the plate, one side of the lower mold 1 is provided with a plurality of card slots 5, the bottom of the upper mold 6 is fixed with an annular friction pad 7 for preventing the plate from being displaced by bolts, when the plate is placed in the limiting groove 2, the limiting groove 2 can limit the plate to prevent the plate from being displaced when the plate is bent later, and the annular friction pad 7 can increase the friction between the upper mold 6 and the plate to further prevent the plate from being offset.

[0063] Reference Figure 3 and Figure 4 As mentioned above, a bending device for a heat shield for an aircraft engine includes: a bottom plate 8, a plurality of support rods 9 are fixedly connected to the top of the bottom plate 8 by bolts, a top plate 10 is fixedly connected to the top of the plurality of support rods 9 by bolts, a rotating disk 13 is rotatably connected to the top of the bottom plate 8, an adsorption component is arranged in the rotating disk 13, and is used to adsorb the sheet in the forming groove 3 to facilitate the later cutting of the sheet, a driving component is arranged at the bottom of the top plate 10, and is used to drive the adsorption component, and a cutting component is arranged at the top of the bottom plate 8, and is used to cut the excess sheet after bending.

[0064] Reference Figure 4 The driving assembly includes a cylinder 12 fixedly connected to the bottom of the top plate 10 by bolts, the output shaft of the cylinder 12 is fixedly connected to the template 11 by bolts, and the bottom of the template 11 is fixedly connected to the top of the upper mold 6 by bolts, and one side of the bottom of the template 11 is fixedly connected to a fixed block 27 by bolts, one side of the lower mold 1 is slidably connected to a slide plate 22, one side of the lower mold 1 is rotatably connected to a rotating rod 26, and the bottom of one end of the rotating rod 26 touches the top of the slide plate 22, when the output shaft of the cylinder 12 drives the template 11 and the upper mold 6 to move downward, the bending of the plate can be completed, and the upward movement of the template 11 and the upper mold 6 can make the rotating block 28 drive the rotating rod 26 to rotate clockwise, complete the adsorption of the plate, and prevent the plate from moving when the plate is cut later.

[0065] Reference Figure 5The adsorption assembly includes a cavity 15 disposed in the rotating disk 13, and the through hole 4 is connected to the cavity 15. A sliding disk 16 is slidably connected in the cavity 15. A plurality of springs 17 are fixedly connected to the bottom of the sliding disk 16, and the bottom end of the spring 17 is fixedly connected to the bottom inner wall of the cavity 15. A plurality of fixing rods 18 are fixedly connected to the top of the sliding disk 16 by bolts, and the top end of the fixing rod 18 extends into the through hole 4 and is fixedly connected to a sealing piston 19, and the sealing piston 19 is sealingly and slidably connected to the through hole 4. A torque connected to the cavity 15 is provided in the rotating disk 13. shaped hole 20, a slide rod 21 fixedly connected to the sliding disk 16 is slidably connected in the rectangular hole 20, and one end of the slide rod 21 away from the sliding disk 16 is fixedly connected to the slide plate 22 by bolts. When the slide rod 21 moves downward, the sliding disk 16 and multiple fixed rods 18 move downward at the same time. Since the sealing piston 19 is sealed and slidably connected to the through hole 4, after the sealing piston 19 moves downward, the space above the sealing piston 19 in the through hole 4 is in a negative pressure state, so that the bent sheet can be tightly adsorbed in the forming groove 3 to fix the sheet, which is convenient for the later cutting of the sheet.

[0066] Reference Figure 7 and Figure 8 The cutting assembly includes an annular groove 30 arranged on the top of the bottom plate 8, a plurality of protrusions 31 located in the annular groove 30 are fixedly connected to the outer wall of the rotating disk 13, a sliding groove 32 connected to the annular groove 30 is provided in the bottom plate 8, a gear 34 is rotatably connected to the top of the bottom plate 8 through the base, a first rack 33 extending into the annular groove 30 is slidably connected in the sliding groove 32, and the top of the first rack 33 is meshed with the gear 34, a U-shaped block 37 is slidably connected to the top of the bottom plate 8, and a second rack 36 meshed with the gear 34 is fixedly connected to the side of the U-shaped block 37 away from the rotating disk 13 by bolts, and the top of the bottom plate 8 is fixedly connected by bolts There is a fixed plate 35, and the end of the second rack 36 away from the U-shaped block 37 slides through the fixed plate 35, the top of the U-shaped block 37 is fixedly connected with a rotating motor 38, the output shaft of the rotating motor 38 is fixedly connected with a cutting tool 39 for cutting the plate, the bottom plate 8 is fixedly connected with a driving motor 14 by bolts, and the output shaft of the driving motor 14 is fixedly connected to the bottom of the rotating disk 13, the rotating disk 13 drives the protrusion 31 to rotate, the protrusion 31 touches the first rack 33, the protrusion 31 pushes the first rack 33 to the right, the second rack 36 moves to the left under the action of the gear 34, and the cutting tool 39 cuts the excess plate.

[0067] Reference Figure 6A trapezoidal pin 23 that engages with the card slot 5 slides through the slide plate 22, and the end of the trapezoidal pin 23 away from the lower mold 1 is fixedly connected to the fixed plate 24 by bolts. The outer wall of the trapezoidal pin 23 is provided with a tension spring 25 fixedly connected to the fixed plate 24, and the end of the tension spring 25 away from the fixed plate 24 is fixedly connected to the slide plate 22. The side of the fixed block 27 close to the slide plate 22 is rotatably connected with a rotating block 28 through a base, and the side of the fixed block 27 close to the slide plate 22 is fixedly connected with a limit block 29 for limiting the rotating block 28 by bolts. When the fixed block 27 drives the rotating block 28 to move upward, due to the limitation of the rotating block 28 by the limit block 29, the rotating block 28 can drive the rotating rod 26 to rotate clockwise, and one end of the rotating rod 26 pushes the slide plate 22 and the slide rod 21 to move down a certain distance, so that the fixed rod 18 and the sealing piston 19 can be moved down, thereby completing the adsorption of the plate.

[0068] Reference Figure 5 The top of the sealing piston 19 located in the middle extends into the molding groove 3. When the trapezoidal pin 23 releases the brakes on the sliding plate 16 and the slide plate 22, the sliding plate 16 pushes the fixing rod 18 and the sealing piston 19 upward under the elastic force of the spring 17. The sealing piston 19 located in the middle extends into the molding groove 3 under the action of the spring 17 and the fixing rod 18, which can push out the plate fitted in the molding groove 3, making it convenient for the staff to collect it later.

[0069] Reference Fig. 9 The top of the bottom plate 8 is fixedly connected with a baffle 40 for shielding debris by bolts, the top of the bottom plate 8 is provided with a collecting trough 41 for collecting debris, the top of the lower mold 1 is fixedly connected with an infrared transmitter 44 by bolts, the bottom of the template 11 is provided with a groove 42 aligned with the infrared transmitter 44, and the top inner wall of the groove 42 is fixedly connected with an infrared receiver 43 by bolts. The infrared receiver 43 receives the infrared rays emitted by the infrared transmitter 44, so that the lower mold 1 can be aligned with the upper mold 6 after rotation, which is convenient for subsequent bending, and the baffle 40 can block the debris generated during cutting and make the debris fall into the collecting trough 41 to prevent the debris from splashing and causing harm to the staff.

[0070] A method for using a bending device for a heat shield for an aircraft engine comprises the following steps:

[0071] S1. Place the circular plate in the limiting groove 2, which limits the plate. Start the cylinder 12. The output shaft of the cylinder 12 pushes the template 11 and the upper mold 6 to move downward. The upper mold 6 squeezes the plate into the forming groove 3 during the downward movement to complete the bending of the plate. When the template 11 moves downward, the fixed block 27 drives the rotating block 28 to move downward. The rotating block 28 touches one end of the rotating rod 26, and the rotating block 28 starts to rotate counterclockwise until the rotating block 28 is completely located below the rotating rod 26. The rotating block 28 rotates in the opposite direction and resets under the action of its own gravity.

[0072] S2. When the upper mold 6 completes the bending of the plate, the plate is tightly attached to the inner wall of the forming groove 3. Then, the output shaft of the cylinder 12 drives the upper mold 6 and the template 11 to move upward. Since the rotating block 28 is located below the rotating rod 26, when the fixed block 27 drives the rotating block 28 to move upward, the rotating block 28 drives the rotating rod 26 to rotate. After one end of the rotating rod 26 pushes the slide plate 22 and the slide bar 21 to move downward for a certain distance, the rotating block 28 is separated from the rotating rod 26. The trapezoidal pin 23 is re-engaged in the slot 5 under the tension of the tension spring 25, thereby completing the braking of the slide plate 22 and the slide bar 21.

[0073] S3. When the slide bar 21 moves downward, the slide bar 21 drives the slide plate 16 and the plurality of fixed rods 18 to move downward, the spring 17 starts to compress, and the fixed rod 18 drives the sealing piston 19 to move downward. Since the sealing piston 19 is in sealing and sliding connection with the through hole 4, after the sealing piston 19 moves downward, the space above the sealing piston 19 in the through hole 4 is in a negative pressure state, so that the bent sheet can be tightly adsorbed in the forming groove 3.

[0074] S4, then start the infrared transmitter 44 and the infrared receiver 43, the infrared rays emitted by the infrared transmitter 44 are received by the infrared receiver 43, at this time, the upper mold 6 is aligned with the lower mold 1, the driving motor 14 is started to drive the rotating disk 13 and the lower mold 1 to rotate, the rotating disk 13 drives the protrusion 31 to rotate, the protrusion 31 touches the first rack 33, the protrusion 31 pushes the first rack 33 to the right, the first rack 33 is meshed with the gear 34, the gear 34 is meshed with the second rack 36, and then the first rack 33 moves to the right to drive the second rack 36 and the U-shaped block 37 to move to the left, the rotating motor 38 is started to drive the cutting tool 39 to rotate, when the U-shaped block 37 moves, the cutting tool 39 cuts the excess plate, and with the rotation of the rotating disk 13 and the lower mold 1, the cutting tool 39 gradually cuts a circle of the plate;

[0075] S5. When the cutting tool 39 cuts the plate, the baffle 40 can block the debris generated during cutting and make the debris fall into the collecting trough 41 to prevent the debris from splashing and causing harm to the staff. The rotating disk 13 and the lower mold 1 continue to rotate. When the infrared light emitted by the infrared transmitter 44 is received by the infrared receiver 43, the rotating disk 13 stops rotating. At this time, the upper mold 6 and the lower mold 1 are aligned again to facilitate the subsequent bending. Then the trapezoidal pin 23 is pulled outward to release the brake of the trapezoidal pin 23 on the slide plate 22. The slide plate 22, the slide rod 21 and the sliding disk 16 push the fixed rod 18 and the sealing piston 19 upward under the elastic force of the spring 17. The sealing piston 19 located in the middle extends into the molding groove 3 under the action of the fixed rod 18, thereby being able to eject the plate in the molding groove 3 for easy collection.

[0076] However, as is well known to those skilled in the art, the working principles and wiring methods of the infrared receiver 43, infrared transmitter 44, cylinder 12 and drive motor 14 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0077] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A bending device for a heat shield for an aircraft engine, characterized in that: The bending mold comprises a lower mold (1) and an upper mold (6); the top of the lower mold (1) is provided with a limiting groove (2) for limiting the position of a plate; the lower mold (1) is provided with a forming groove (3) connected to the limiting groove (2); the forming groove (3) is provided with a plurality of through holes (4) for adsorbing the plate; A plurality of slots (5) are provided on one side of the lower mold (1), and an annular friction pad (7) is fixedly embedded at the bottom of the upper mold (6) for preventing the plate from being displaced; A bottom plate (8), the top of the bottom plate (8) being fixedly connected to a plurality of support rods (9), the tops of the plurality of support rods (9) being fixedly connected to a top plate (10), and the top of the bottom plate (8) being rotatably connected to a rotating disk (13); An adsorption component is arranged in the rotating disk (13) and is used to adsorb the plate in the forming groove (3) to facilitate the subsequent cutting of the plate; A driving component, arranged at the bottom of the top plate (10) and used for driving the adsorption component; A cutting assembly, arranged on the top of the bottom plate (8), for cutting excess plate material after bending; The driving assembly comprises a cylinder (12) fixedly connected to the bottom of the top plate (10), the output shaft of the cylinder (12) is fixedly connected to the template (11), and the bottom of the template (11) is fixedly connected to the top of the upper mold (6), one side of the bottom of the template (11) is fixedly connected to a fixed block (27), one side of the lower mold (1) is slidably connected to a slide plate (22), one side of the lower mold (1) is rotatably connected to a rotating rod (26), and the bottom of one end of the rotating rod (26) contacts the top of the slide plate (22); The adsorption assembly comprises a cavity (15) arranged in a rotating disk (13), and the through hole (4) is connected to the cavity (15); a sliding disk (16) is slidably connected in the cavity (15); a plurality of springs (17) are fixedly connected to the bottom of the sliding disk (16), and the bottom ends of the springs (17) are fixedly connected to the bottom inner wall of the cavity (15); a plurality of fixing rods (18) are fixedly connected to the top of the sliding disk (16), and the top ends of the fixing rods (18) extend into the through hole (4) and are fixedly connected to a sealing piston (19), and the sealing piston (19) is sealingly and slidably connected to the through hole (4); a rectangular hole (20) connected to the cavity (15) is provided in the rotating disk (13), and a spring (17) fixedly connected to the sliding disk (16) is slidably connected in the rectangular hole (20). A sliding rod (21) is fixedly connected, one end of the sliding rod (21) away from the sliding plate (16) is fixedly connected to the sliding plate (22), a trapezoidal pin (23) that is engaged with the slot (5) is slidably penetrated in the sliding plate (22), one end of the trapezoidal pin (23) away from the lower mold (1) is fixedly connected to the fixing plate (24), the outer wall of the trapezoidal pin (23) is provided with a tension spring (25) fixedly connected to the fixing plate (24), one end of the tension spring (25) away from the fixing plate (24) is fixedly connected to the sliding plate (22), the side of the fixing block (27) close to the sliding plate (22) is rotatably connected to the rotating block (28) through the base, and the side of the fixing block (27) close to the sliding plate (22) is fixedly connected to a limit block (29) for limiting the rotating block (28).

2. The bending device for the heat shield of an aircraft engine according to claim 1, characterized in that: The cutting assembly comprises an annular groove (30) arranged at the top of the base plate (8); a plurality of protrusions (31) located in the annular groove (30) are fixedly connected to the outer wall of the rotating disk (13); a sliding groove (32) connected to the annular groove (30) is provided in the base plate (8); a gear (34) is rotatably connected to the top of the base plate (8) via a base; a first rack (33) extending into the annular groove (30) is slidably connected in the sliding groove (32); and the top of the first rack (33) is meshed with the gear (34); a U-shaped block (37) is slidably connected to the top of the base plate (8); and the U-shaped block (37) is slidably connected to the top of the base plate (8). A second rack (36) meshing with the gear (34) is fixedly connected to a side of the bottom plate (8) away from the rotating disk (13); a fixed plate (35) is fixedly connected to the top of the bottom plate (8); and an end of the second rack (36) away from the U-shaped block (37) slides through the fixed plate (35); a rotating motor (38) is fixedly connected to the top of the U-shaped block (37); a cutting tool (39) for cutting a plate is fixedly connected to the output shaft of the rotating motor (38); a driving motor (14) is fixedly connected inside the bottom plate (8); and the output shaft of the driving motor (14) is fixedly connected to the bottom of the rotating disk (13).

3. The bending device for the heat shield of an aircraft engine according to claim 2, characterized in that: The top of the sealing piston (19) located in the middle extends into the molding groove (3).

4. The bending device for the heat shield of an aircraft engine according to claim 3, characterized in that: A baffle (40) for shielding debris is fixedly connected to the top of the bottom plate (8), a collecting trough (41) for collecting debris is provided on the top of the bottom plate (8), an infrared transmitter (44) is fixedly connected to the top of the lower mold (1), a groove (42) aligned with the infrared transmitter (44) is provided at the bottom of the template (11), and an infrared receiver (43) is fixedly connected to the top inner wall of the groove (42).

5. The method for using the bending device for the heat shield of an aircraft engine according to claim 4, characterized in that: The following steps are involved: S1. Place the circular plate in the limiting groove (2). The limiting groove (2) limits the plate. Start the cylinder (12). The output shaft of the cylinder (12) pushes the template (11) and the upper mold (6) to move downward. The upper mold (6) squeezes the plate into the forming groove (3) during the downward movement to complete the bending of the plate. When the template (11) moves downward, the fixed block (27) drives the rotating block (28) to move downward. The rotating block (28) contacts one end of the rotating rod (26). The rotating block (28) starts to rotate counterclockwise until the rotating block (28) is completely located below the rotating rod (26). The rotating block (28) rotates in the opposite direction to reset under the action of its own gravity. S2. When the upper mold (6) completes the bending of the plate, the plate is tightly attached to the inner wall of the forming groove (3). Then, the output shaft of the cylinder (12) drives the upper mold (6) and the template (11) to move upward. Since the rotating block (28) is located below the rotating rod (26), when the fixed block (27) drives the rotating block (28) to move upward, the rotating block (28) drives the rotating rod (26) to rotate. After one end of the rotating rod (26) pushes the slide plate (22) and the slide bar (21) downward for a certain distance, the rotating block (28) and the rotating rod (26) are separated from each other. The trapezoidal pin (23) is re-engaged in the slot (5) under the tension of the tension spring (25), thereby completing the braking of the slide plate (22) and the slide bar (21). S3. When the slide rod (21) moves downward, the slide rod (21) drives the slide plate (16) and the plurality of fixed rods (18) to move downward, the spring (17) starts to compress, and the fixed rod (18) drives the sealing piston (19) to move downward. Since the sealing piston (19) is in sealing sliding connection with the through hole (4), after the sealing piston (19) moves downward, the space above the sealing piston (19) in the through hole (4) is in a negative pressure state, so that the bent sheet can be tightly adsorbed in the forming groove (3); S4, then start the infrared transmitter (44) and the infrared receiver (43), the infrared rays emitted by the infrared transmitter (44) are received by the infrared receiver (43), at this time the upper mold (6) is aligned with the lower mold (1), the drive motor (14) is started to drive the rotating disk (13) and the lower mold (1) to rotate, the rotating disk (13) drives the protrusion (31) to rotate, the protrusion (31) contacts the first rack (33), the protrusion (31) pushes the first rack (33) to the right, and the first rack (33) meshes with the gear (34), and the gear (34) meshes with the second rack (36), so that the first rack (33) moves to the right, driving the second rack (36) and the U-shaped block (37) to move to the left, and the rotating motor (38) is started to drive the cutting tool (39) to rotate. When the U-shaped block (37) moves, the cutting tool (39) cuts the excess plate, and as the rotating disk (13) and the lower mold (1) rotate, the cutting tool (39) gradually cuts a circle of the plate; S5. When the cutting tool (39) cuts the plate, the baffle (40) can block the debris generated during the cutting and make the debris fall into the collecting trough (41) to prevent the debris from splashing and causing harm to the staff. The rotating disk (13) and the lower mold (1) continue to rotate. When the infrared light emitted by the infrared transmitter (44) is received by the infrared receiver (43), the rotating disk (13) stops rotating. At this time, the upper mold (6) and the lower mold (1) are aligned again to facilitate the subsequent bending. Then, the trapezoidal pin (23) is pulled outward to release the brake of the slide plate (22) by the trapezoidal pin (23). The slide plate (22), the slide rod (21) and the sliding disk (16) push the fixed rod (18) and the sealing piston (19) upward under the elastic force of the spring (17). The sealing piston (19) located in the middle extends into the molding groove (3) under the action of the fixed rod (18), thereby being able to eject the plate in the molding groove (3) for easy collection.

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