A forming die for an aircraft cable protective cover

Abstract

The present invention provides a forming die for an aircraft cable protective cover, belonging to the technical field of aviation manufacturing. The forming die includes an upper template, a lower template, an upper template baffle, a lower template baffle, a die core fixing body, a die core, an insert block, a metal sheet fixing pin, an upper and lower template positioning pin, a cylindrical pin and a screw. The vulcanization forming die structure of the present invention is easy to install rubber blank materials; the metal sheet is firmly fixed in the die, avoiding the position deviation or falling off of the metal sheet during the rubber blank loading process, the upper and lower die closing process, and the rubber vulcanization process; the vulcanization forming work of the aircraft cable protective cover is continuously completed, ensuring that the rubber protective cover products formed by each vulcanization forming die can always be fixed; the fitting clearances between the parts of the forming die are maintained stable, enabling the aircraft cable protective cover to be formed efficiently, safely and in one step.

Description

Technical Field

[0001] The present invention belongs to the technical field of aviation manufacturing and relates to a forming die for an aircraft cable protective cover. Background Art

[0002] According to the requirements of the aircraft overhaul process, the aircraft cable protective cover is composed of a vulcanized rubber protective cover body and metal sheets (such as Figure 1 ), and must be replaced along with the aircraft repair. Therefore, the vulcanization forming die for the aircraft cable protective cover is a necessary task. Since the metal sheets of the aircraft cable protective cover are symmetrically installed on the left and right sides of the vulcanized rubber protective cover body, the vulcanization forming die is divided into a left-piece forming die and a right-piece forming die.

[0003] Due to the complex external structure of the aircraft cable protective cover, the forming die is extremely complex. The rubber protective cover body is formed by vulcanizing the mixed rubber through a die. The metal sheets and the mixed rubber are vulcanized and formed in the die at the same time, so as to be fixed on the rubber protective cover body. It is difficult to form the aircraft cable protective cover, and defects in the die structure are likely to cause failure to form; the movement and detachment of the metal sheets are likely to cause product scrapping; the die cannot be fully loaded with rubber blank materials, which is likely to cause lack of rubber in the rubber outer shape and result in product scrapping.

[0004] Therefore, it is necessary to design a defect-free forming die. The structure of the forming die is easy to load rubber blank materials; the metal sheets are firmly fixed in the die, avoiding the position deviation or detachment of the metal sheets during the process of loading the rubber blank into the die, the process of closing the upper and lower dies, and the rubber vulcanization process, which may cause product scrapping, and realizing the efficient, safe and one-time forming production of the aircraft cable protective cover. Summary of the Invention

[0005] In order to solve the above problems in the prior art, the present invention provides a forming die for an aircraft cable protective cover. Separate the upper template of this forming die from the lower template, use the insert block fixed in the lower template baffle to fix the metal sheet, and the hole for fixing the metal sheet on the insert block is fixed by the metal sheet fixing pin. The metal sheet is firmly fixed during the vulcanization process; place the rubber blank in the cavity of the lower template, correctly place the die core in the cavity of the upper template, correctly align and place the upper template, place the assembled forming die on the vulcanizer for vulcanization. After vulcanization is completed according to the specified time, correctly separate the upper and lower templates, take out the die core, and pull out the rubber protective cover to complete the forming of the cable protective cover.

[0006] The technical solution of the present invention is as follows:

[0007] A forming die for an aircraft cable protective cover includes an upper template 1, a lower template 2, an upper template baffle 3, a lower template baffle 4, a die core fixing body 5, a die core 6, an insert block 7, a metal sheet fixing pin 8, an upper and lower template positioning pin 9, a cylindrical pin and a screw.

[0008] The mold core fixing body 5 has a stepped shaft structure, with a square groove opened on the circumference of the large circle of the stepped shaft; a through hole is provided at the center of the mold core fixing body 5. The outer surface of the mold core 6 is consistent with the inner surface of the cable protective cover, and is formed by connecting a cuboid structure and an elliptical shaft; the mold core 6 is fixed on the large circular end surface of the mold core fixing body 5 by screws.

[0009] Both the upper template 1 and the lower template 2 are provided with grooves matching the outer shape of the mold core 6, and an overflow groove is provided on the outer periphery of the groove for the excess rubber to flow in after molding. Among them, a crescent arc-shaped groove is opened on the groove of the lower template 2 corresponding to the cuboid structure of the mold core 6 for positioning the insert block 7.

[0010] Both the upper template baffle 3 and the lower template baffle 4 are provided with grooves matching the outer shape of the mold core fixing body 5. Among them, a square groove is opened on the groove of the lower template baffle 4 corresponding to the large circular end of the mold core fixing body 5, and a through hole is opened in the square groove for installing the insert block 7.

[0011] The upper template baffle 3 and the upper template 1 are connected by a cylindrical pin and screws; the lower template baffle 4 and the lower template 2 are connected by a cylindrical pin and screws.

[0012] The insert block 7 is composed of a cylinder and a block structure; among them, the cylinder is installed in the through hole of the square groove of the lower template baffle 4, and the arc-shaped piece protruding from the block is embedded in the crescent arc-shaped groove of the lower template 2.

[0013] The metal sheet fixing pin 8 is installed on the block of the insert block 7 for positioning the metal sheet hole of the cable protective cover.

[0014] The assembled mold core fixing body 5 and mold core 6 are placed in the corresponding grooves of the upper template baffle 3 and the upper template 1, and the square groove of the mold core fixing body 5 is opposite to the insert block 7 on the lower template baffle 4; the upper template 1 and the lower template 2 are positioned by the upper and lower template positioning pins 9 to assemble the forming mold of the cable protective cover.

[0015] Advantages of the present invention:

[0016] 1) The metal sheet of the aircraft cable protective cover is firmly fixed during the vulcanization process. When the rubber protective cover is taken out, the insert block and the rubber protective cover are taken out together with the metal sheet, and the insert block is taken out from the metal sheet to avoid interference and damage to the rubber protective cover.

[0017] 2) The structure of the vulcanization forming mold of the aircraft cable protective cover is easy to install the rubber blank; the metal sheet is firmly fixed in the mold, avoiding the position deviation or falling off of the metal sheet during the process of loading the rubber blank into the mold, the process of closing the upper and lower molds, and the rubber vulcanization process.

[0018] 3) The vulcanization and molding work of the aircraft cable protective cover is continuously completed, ensuring that the rubber protective cover products formed by each vulcanization and molding die can always be fixed. The clearance between the parts of the vulcanization and molding die remains stable, enabling the efficient, safe, and one-time molding of the aircraft cable protective cover. Description of the Drawings

[0019] Figure 1 Schematic diagram of the formed cable protective cover (the right part is as shown in the figure, and the left part is symmetrical); among them, (a) is the front view, and (b) is the left view.

[0020] Figure 2 Front view of the molding die for the aircraft cable protective cover (the right part is as shown in the figure, and the left part is symmetrical).

[0021] Figure 3 For Figure 2 View B of

[0022] Figure 4 For Figure 2 Sectional view taken along the line C-C of

[0023] Figure 5 Schematic diagram of the upper and lower templates; among them, (b) is the front view, (a) is the view A, (c) is the view B, and (d) is the sectional view taken along the line C-C.

[0024] Figure 6 Schematic diagram of the upper and lower template baffles; among them, (b) is the front view, (a) is the view A, (c) is the view B, and (d) is the sectional view taken along the line C-C.

[0025] Figure 7 Schematic diagram of the die core fixing body; among them, (a) is the front view, and (b) is the left view.

[0026] Figure 8 Schematic diagram of the die core; among them, (a) is the front view, and (b) is the left view.

[0027] Figure 9 Schematic diagram of the insert block; among them, (a) is the front view, (b) is the left view, (c) is the view A of (a), and (d) is the view B of (b).

[0028] Figure 10 Schematic diagram of the metal sheet positioning pin.

[0029] Figure 11 Schematic diagram of the upper and lower template positioning pins.

[0030] Figure 12 Schematic diagram of the assembled forming die core.

[0031] In the figure: 1 upper template; 2 lower template; 3 upper template baffle; 4 lower template baffle; 5 core fixing body; 6 core; 7 insert block; 8 metal sheet fixing pin; 9 upper and lower template positioning pin; 10 cylindrical pin; 11 screw A; 12 screw B; 13 rubber protective cover body; 14 metal sheet. Specific implementation manner

[0032] The following further explains the specific implementation manner of the present invention in conjunction with embodiments and the drawings, but is not used to limit the present invention.

[0033] This embodiment provides a molding die for an aircraft cable protective cover, as Figure 2 - 4 shown, including an upper template 1, a lower template 2, an upper template baffle 3, a lower template baffle 4, a core fixing body 5, a core 6, an insert block 7, a metal sheet fixing pin 8, an upper and lower template positioning pin 9, a cylindrical pin 10, a screw A 11 and a screw B 12.

[0034] As Figure 7 shown, the core fixing body 5 has a stepped shaft structure, and a square groove is opened on the circumference of the large circle of the stepped shaft; a through hole is provided in the center of the core fixing body 5. As Figure 8 shown, the outer profile surface of the core 6 is consistent with the inner profile surface of the cable protective cover, and is formed by connecting a cuboid structure and an elliptical shaft; as Figure 12 shown, the core 6 is fixed on the large circular end surface of the core fixing body 5 by the screw B 12.

[0035] As Figure 5 shown in (a) and (c) of Figure 5 shown, grooves matching the outer shape of the core 6 are opened on both the upper template 1 and the lower template 2, and an overflow groove is provided on the outer circumference of the groove for the excess rubber to flow in after molding. As

[0036] As Figure 6 shown in (a) and (c) of Figure 6 shown, grooves matching the outer shape of the core fixing body 5 are opened on both the upper template baffle 3 and the lower template baffle 4. As

[0037] shown in (c) of

[0038] shown, a square groove is opened on the groove of the lower template baffle 4 corresponding to the large circular end of the core fixing body 5, and a through hole is opened in the square groove for installing the insert block 7. Figure 9 shown, the insert block 7 is composed of a cylinder and a block structure; wherein, the cylinder is installed in the through hole of the square groove of the lower template baffle 4, and the arc-shaped piece protruding from the block is embedded in the crescent arc groove of the lower template 2.

[0039] The metal sheet fixing pin 8 is installed on the block body of the insert block 7 and is used to position the metal sheet hole of the cable protection cover.

[0040] The assembled die core fixing body 5 and die core 6 are placed in the corresponding grooves of the upper template baffle 3 and the upper template 1, and the square groove of the die core fixing body 5 is opposite to the position of the insert block 7 on the lower template baffle 4; the upper template 1 and the lower template 2 are positioned by the upper and lower template positioning pins 9 to assemble the forming die of the cable protection cover.

[0041] During use, separate the upper template of this forming die from the lower template, align the metal sheet hole with the metal sheet fixing pin on the insert block fixed on the lower template baffle, place the rubber blank in the lower template cavity, correctly place the die core in the upper template cavity, align and place the upper template, place the assembled forming die on the vulcanizer for vulcanization. After vulcanization is completed according to the specified time, correctly separate the upper and lower templates, take out the die core, take out the insert block together with the rubber protection cover and the metal sheet, take out the insert block from the metal sheet, and pull out the rubber protection cover to complete the forming work of the cable protection cover.

Claims

1. A forming die for an aircraft cable protective cover, characterized in that, The forming die includes an upper template (1), a lower template (2), an upper template baffle (3), a lower template baffle (4), a die core fixing body (5), a die core (6), an insert block (7), a metal sheet fixing pin (8), an upper and lower template positioning pin (9), a cylindrical pin and a screw; The die core fixing body (5) has a stepped shaft structure. Square grooves are formed on the circumference of the large circle of the stepped shaft. A through hole is provided in the center of the die core fixing body (5); The outer profile surface of the die core (6) is consistent with the inner profile surface of the cable protection cover and is formed by connecting a cuboid structure and an elliptical shaft; The die core (6) is fixed on the large circular end face of the die core fixing body (5); Grooves matching the outer shape of the die core (6) are formed on both the upper template (1) and the lower template (2). An overflow groove is provided on the outer circumference of the groove for the excess rubber to flow in after forming; Among them, a crescent arc-shaped groove is formed on the groove of the lower template (2) corresponding to the cuboid structure of the die core (6) for positioning the insert block (7); Grooves matching the outer shape of the die core fixing body (5) are formed on both the upper template baffle (3) and the lower template baffle (4); Among them, a square groove is formed on the groove of the lower template baffle (4) corresponding to the large circular end of the die core fixing body (5), and a through hole is formed in the square groove for installing the insert block (7); The upper template baffle (3) and the upper template (1) are connected by a cylindrical pin and a screw; The lower template baffle (4) and the lower template (2) are connected by a cylindrical pin and a screw; The insert block (7) is composed of a cylinder and a block structure; Among them, the cylinder is installed in the through hole of the square groove of the lower template baffle (4), and the arc-shaped piece protruding from the block is embedded in the crescent arc-shaped groove of the lower template (2); The metal sheet fixing pin (8) is installed on the block of the insert block (7) for positioning the metal sheet hole of the cable protection cover; The assembled die core fixing body (5) and die core (6) are placed in the corresponding grooves of the upper template baffle (3) and the upper template (1), and the square groove of the die core fixing body (5) is opposite to the insert block (7) on the lower template baffle (4); The upper template (1) and the lower template (2) are positioned by the upper and lower template positioning pin (9) to assemble the forming die of the cable protection cover.

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