Vulcanizing mold for shock pad of fairing of aviation aircraft engine

Abstract

The utility model relates to an aviation aircraft engine fairing shock pad vulcanization mold which comprises an upper mold, a middle mold and a lower mold, the middle mold is arranged on the lower mold, the upper mold is arranged on the middle mold, a base groove is formed in the upper surface of the lower mold, a glue injection cavity is formed in the position, corresponding to the center of the base groove, of the middle mold, and a lock catch support groove extending downwards is formed in the center of the base groove of the lower mold. A lock catch support is arranged in the lock catch support groove, the lower end of the lock catch support is fixed in the lock catch support groove, the upper end of the lock catch support extends into the glue injection cavity of the middle mold, the lock catch support is hollow, a lock catch positioner is arranged in the lock catch support cavity, a lock catch cover plate is arranged at the upper end of the lock catch positioner, and the upper surface of the lock catch cover plate is flush with the upper surface of the middle mold. The position of the metal lock catch and the position of the metal lock catch base can be fixed, inaccurate positioning is avoided, the product percent of pass is improved, the metal lock catch can be prevented from deflecting relative to the lock catch positioner in the vulcanization process, and the middle mold and the lower mold cannot move relatively in the vulcanization process.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation aircraft manufacturing, in particular to a vulcanization mold for a shock-absorbing pad of an aviation aircraft engine fairing. Background Art

[0002] Vulcanization is a process in which linear polymers are cross-linked to form a network polymer. The shock-absorbing pads made by vulcanization have greatly improved performance and product quality. The shock-absorbing pads of general aviation aircraft engine fairings are made using the vulcanization process. Vulcanized rubber is embedded between the metal lock bases. When bumps occur, the rubber will play a buffering role. The vulcanization process in the prior art is mainly manufactured in conjunction with a vulcanization mold. The workpiece to be vulcanized is placed in the mold for vulcanization for a period of time. However, during the vulcanization process of the vulcanization mold in the prior art, the workpiece will shift, resulting in a decrease in the product qualification rate. Utility Model Content

[0003] In order to solve the technical problem that in the existing vulcanization process, a workpiece may deviate in a mold, resulting in a decrease in the qualified rate of products, the utility model provides a vulcanization mold for a shock absorbing pad of an aircraft engine fairing.

[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: a vulcanization mold for a shock-absorbing pad of an aircraft engine fairing, comprising an upper mold, a middle mold and a lower mold, wherein the middle mold is arranged on the lower mold, the upper mold is arranged on the middle mold, a base groove is arranged on the upper surface of the lower mold, a glue injection cavity is arranged at the center of the middle mold corresponding to the base groove, a lock support groove extending downward is arranged at the center of the base groove of the lower mold, a lock support is arranged in the lock support groove, the lower end of the lock support is fixed in the lock support groove, and the upper end extends into the glue injection cavity of the middle mold, the lock support is hollow, a lock locator is arranged in the lock support cavity, a lock cover plate is arranged on the upper end of the lock locator, and the upper surface of the lock cover plate is flush with the upper surface of the middle mold.

[0005] Preferably, the locking support includes a second base and a supporting portion, the second base is cylindrical, the supporting portion is truncated cone-shaped, the lower surface of the supporting portion is in contact with the base groove, the cavity of the locking support includes a first cavity and a second cavity that are interconnected, the first cavity is an inverted truncated cone-shaped, the second cavity is cylindrical, and the diameter of the second cavity is smaller than the diameter of the small diameter end of the first cavity.

[0006] Preferably, the lock locator includes a first base, a limit block and a top block, the first base is fixed in the second cavity, the limit block is arranged on the first base, the top block is arranged on the limit block, the top block extends out of the injection cavity and is flush with the upper surface of the middle mold, and the lock cover plate passes through the top block.

[0007] Preferably, the second base is interference fit with the lock support groove.

[0008] Preferably, the first base is interference fit with the second cavity.

[0009] Preferably, the base groove is elliptical, the limiting block is an elongated limiting block, and the major axis of the elongated limiting block is in the same direction as the major axis of the base groove.

[0010] Preferably, the lower mold is provided with a first positioning hole, the middle mold is provided with a second positioning hole, and the first positioning hole and the second positioning hole are connected by a pin.

[0011] Compared with the prior art, the utility model can fix the position of the metal lock and the metal lock base through the arrangement of the lock support, the lock locator and the base groove, avoid inaccurate positioning, and improve the product qualification rate; by arranging the long strip limit block, it can prevent the metal lock from deflecting relative to the lock locator during the vulcanization process; by arranging the first positioning hole and the second positioning hole, it can prevent the middle mold and the lower mold from relative displacement during the vulcanization process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the upper die structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the middle mold structure of the utility model.

[0014] Figure 3 It is a schematic diagram of the lower mold structure of the utility model.

[0015] Figure 4 It is a schematic diagram of the lock support structure of the utility model.

[0016] Figure 5 It is a structural schematic diagram of the lock positioner of the utility model.

[0017] Figure 6 It is a structural schematic diagram of the lock cover plate of the utility model.

[0018] Figure 7 It is a cross-sectional view of the installation state of the lock support, the lock positioner and the lock cover plate of the utility model.

[0019] In the figure: 1: upper mold; 2: middle mold; 201: glue injection cavity; 202: second positioning hole; 3: lower mold; 301: base groove; 302: first positioning hole; 4: lock support; 401: second base; 402: support part; 403: first cavity; 404: second cavity; 5: lock locator; 501: first base; 502: limit block; 503; top block; 6: lock cover. DETAILED DESCRIPTION

[0020] The utility model is a specific implementation method of a vulcanization mold for a shock absorbing pad of an aircraft engine fairing. Figures 1 to 7 As shown: it includes an upper mold 1, a middle mold 2, and a lower mold 3. The middle mold 2 is arranged on the lower mold 3, the upper mold 1 is arranged on the middle mold 2, and a base groove 301 is arranged on the upper surface of the lower mold 3. The shape of the base groove 301 is adapted to the metal lock base. A glue injection cavity 201 is arranged at the center of the middle mold 2 corresponding to the base groove 301. A lock support groove extending downward is arranged at the center of the base groove 301 of the lower mold 3. A lock support 4 is arranged in the lock support groove. The lock support 4 includes a second base 401 and a support portion 402. The second base 401 is The support portion 402 is cylindrical, the support portion 402 is truncated cone-shaped, the lower surface of the support portion 402 contacts the base groove 301, the second base 401 at the lower end of the lock support 4 is fixed in the lock support groove by interference fit, and the upper end extends into the injection cavity 201 of the middle mold 2. The lock support 4 is hollow, and a first cavity 403 and a second cavity 404 are connected to each other. The first cavity 403 is an inverted truncated cone, and the second cavity 404 is cylindrical. The diameter of the second cavity 404 is smaller than the diameter of the small diameter end of the first cavity 403 The lock support 4 is provided with a lock locator 5, which includes a first base 501, a limit block 502 and a top block 503. The first base 501 is fixed in the second cavity 404 by interference fit. The limit block 502 is arranged on the first base 501, and the top block 503 is arranged on the limit block 502. The top block 503 extends out of the injection cavity 201 and is flush with the upper surface of the middle mold 2. The upper end of the lock locator 5 is provided with a lock cover plate 6, which passes through the top block 503 and the upper surface of the lock cover plate 6 The surface is flush with the upper surface of the middle mold 2 and the top block 503, the base groove 301 is elliptical, the limit block 502 is an elongated limit block, and the shape of the limit block 502 is adapted to the shape of the lower end notch of the metal lock, so that the metal lock will not rotate under the limit of the limit block 502, and the major axis of the elongated limit block is in the same direction as the major axis of the base groove 301, a first positioning hole 302 is provided on the lower mold 3, and a second positioning hole 202 is provided on the middle mold 2, and the first positioning hole 302 and the second positioning hole 202 are connected by pins.

[0021] Working process: Place the lower mold 3 horizontally, place the metal lock base on the base groove 301, fix the second base 401 of the lock support 4 on the lock support groove, and the lower surface of the support part 402 of the lock support 4 is in contact with the base groove 301, fix the first support 501 of the lock locator 5 in the second cavity 404, and the long axis direction of the limit block 502 is the same as the long axis direction of the base groove 301, and pass the pin through the first positioning hole 302 and the second positioning hole 202 Fix the lower mold 3 and the middle mold 2 together, place the metal lock on the lock locator 5, and the metal lock is engaged with the limit block 502, and the lock cover plate 6 passes through the top block 503 to cover the metal lock, and inject glue into the injection cavity 201 of the middle mold 2, cover the upper mold 1, and put the entire mold into the vulcanization device for vulcanization manufacturing. After the vulcanization manufacturing is completed, remove the upper mold 1, the middle mold 2, the lock cover plate 6, the lock support 4, and the lower mold 3 of the lock locator 5 to obtain the vulcanized shock absorbing pad.

Claims

1. A vulcanization mold for a shock-absorbing pad of an aircraft engine fairing, characterized in that: The invention comprises an upper mold (1), a middle mold (2) and a lower mold (3), wherein the middle mold (2) is arranged on the lower mold (3), the upper mold (1) is arranged on the middle mold (2), a base groove (301) is arranged on the upper surface of the lower mold (3), a glue injection cavity (201) is arranged at the center of the middle mold (2) corresponding to the base groove (301), a lock support groove extending downward is arranged at the center of the base groove (301) of the lower mold (3), a lock support (4) is arranged in the lock support groove, the lower end of the lock support (4) is fixed in the lock support groove, and the upper end extends into the glue injection cavity (201) of the middle mold (2), the lock support (4) is hollow, a lock locator (5) is arranged in the cavity of the lock support (4), a lock cover plate (6) is arranged at the upper end of the lock locator (5), and the upper surface of the lock cover plate (6) is flush with the upper surface of the middle mold (2).

2. The vulcanization mold for the shock-absorbing pad of an aircraft engine fairing according to claim 1, characterized in that: The locking support (4) comprises a second base (401) and a supporting portion (402), wherein the second base (401) is cylindrical, and the supporting portion (402) is truncated cone-shaped, and the lower surface of the supporting portion (402) contacts the base groove (301), and the cavity of the locking support (4) comprises a first cavity (403) and a second cavity (404) which are interconnected, wherein the first cavity (403) is an inverted truncated cone-shaped, and the second cavity (404) is cylindrical, and the diameter of the second cavity (404) is smaller than the diameter of the small diameter end of the first cavity (403).

3. The vulcanization mold for the shock-absorbing pad of an aircraft engine fairing according to claim 2, characterized in that: The lock locator (5) comprises a first base (501), a limit block (502) and a top block (503); the first base (501) is fixed in the second cavity (404); the limit block (502) is arranged on the first base (501); the top block (503) is arranged on the limit block (502); the top block (503) extends out of the injection cavity (201) and is flush with the upper surface of the middle mold (2); and the lock cover plate (6) passes through the top block (503).

4. The vulcanization mold for the shock-absorbing pad of an aircraft engine fairing according to claim 2, characterized in that: The second base (401) is interference-fitted with the lock support groove.

5. The vulcanization mold for the shock-absorbing pad of an aircraft engine fairing according to claim 3, characterized in that: The first base (501) and the second cavity (404) are interference fit.

6. The aircraft engine fairing shock pad vulcanization mold according to claim 3, characterized in that: The base groove (301) is elliptical, the limiting block (502) is an elongated limiting block, and the major axis of the elongated limiting block is in the same direction as the major axis of the base groove (301).

7. The aircraft engine fairing shock pad vulcanization mold according to claim 1, characterized in that: The lower mold (3) is provided with a first positioning hole (302), the middle mold (2) is provided with a second positioning hole (202), and the first positioning hole (302) and the second positioning hole (202) are connected by a pin.

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