Extrusion die for profile for aero seat backrest

Abstract

The utility model belongs to the technical field of forming dies, and particularly relates to an extrusion die of a profile for an aero seat backrest, which comprises a base, a fixed seat is fixed on the side wall of the top of the base, a die cushion is mounted in the middle of the inner side wall of the fixed seat, and a pressing component is arranged between the die cushion and the fixed seat. Through the arrangement of the first supporting plate, the first fixing plate, the first supporting plate, the second fixing plate and the first telescopic rod, heated raw materials can be supported from the bottom, the situation that the raw materials droop due to the gravity effect is effectively prevented, the straightness and the size precision of extruded profile products are guaranteed, resistance in the extrusion process can be reduced by supporting the heated raw materials, and the extrusion efficiency is improved. And meanwhile, the heated raw material is supported, so that the surface of the extruded profile is smoother and more uniform, scratches and ripples generated by sliding of the raw material in the die cushion and the die sleeve are reduced, and the mechanical property and durability of the profile product are improved.

Description

Technical Field

[0001] This utility model belongs to the field of molding die technology, specifically an extrusion die for a profile used in aircraft seat backs. Background Technology

[0002] The backrest of an aircraft seat is an important component, providing back support for passengers during flight. An aircraft seat backrest typically consists of a backrest frame, backrest panel, headrest, and other parts. The backrest frame is generally made of sturdy and durable materials, such as aluminum alloy or steel, to ensure its stability and load-bearing capacity.

[0003] Aircraft seat back frames typically have complex shapes and structures, including curves, grooves, and connecting parts. In the prior art, molten aluminum alloy, steel, or other materials need to be injected into an extrusion mold to produce the seat back frame of the required shape.

[0004] Through long-term use and observation, it was found that during the process of extruding raw materials into shape using an extrusion die, unstable placement of the raw materials caused unevenness or wavy defects on the surface of the extruded profile products.

[0005] Therefore, this utility model provides an extrusion mold for a profile used in aircraft seat backs. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art and solve at least one of the problems mentioned in the background art, an extrusion mold for a profile for an aircraft seat back is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: An extrusion mold for an aviation seat back profile, comprising a base, a fixed seat fixed to the top side wall of the base, a mold pad installed in the middle of the inner side wall of the fixed seat, a pressing component between the mold pad and the fixed seat, a mold sleeve slidably fitted in the middle of the inner side wall of the mold pad, a limiting component between the mold pad and the mold sleeve, a vertical plate fixed to the top side wall of the base, an electric push rod fixed to the middle of the side wall of the vertical plate, a push plate fixed to the output end of the electric push rod, a supporting component in the middle of the side wall of the fixed seat, the supporting component being disposed between the base and the vertical plate, a supporting component in the top side wall of the base, a fixing component in the top side wall of the fixed seat, the supporting component including a first support plate, the first support plate being disposed between the fixed seat and the push plate, a first fixing plate fixed to the middle of the side wall of the first support plate, and a rotatably connected component in the middle of the inner side wall of the first fixing plate. A torsion spring is provided between the first support plate, the first fixed plate, and the first support plate. A second fixed plate is rotatably connected to the other end of the first support plate. The second fixed plate is fixed to the side wall of the fixed seat. A torsion spring is provided between the first support plate and the second fixed plate. A first telescopic rod is fixed to the bottom side wall of the first support plate. This step, by setting the first support plate, the first fixed plate, the first support plate, the second fixed plate, and the first telescopic rod, can support the heated raw material from the bottom, effectively preventing it from sagging due to gravity, ensuring the straightness and dimensional accuracy of the extruded profile product. Supporting the heated raw material can also reduce the resistance during the extrusion process, thereby improving the extrusion speed and production efficiency of the profile for aircraft seat backrests. At the same time, supporting the heated raw material can make the surface of the extruded profile smoother and more uniform, reducing scratches and ripples caused by the sliding of the raw material in the die pad and die sleeve, and improving the mechanical properties and durability of the profile product.

[0008] Preferably, the support assembly includes a second support plate positioned above the base. A third fixing plate is fixed to the middle of the side wall of the second support plate. The third fixing plates are a pair and symmetrically arranged on both sides of the second support plate. A second support plate is rotatably connected to the middle of the inner side wall of the third fixing plate. A torsion spring is provided between the third fixing plate and the second support plate. A fourth fixing plate is rotatably connected to the other end of the second support plate. A torsion spring is provided between the second support plate and the fourth fixing plate. A second telescopic rod is fixed to the bottom side wall of the second support plate. This step, by setting the second support plate, the third fixing plate, the second support plate, the fourth fixing plate, and the second telescopic rod, can support the extruded profile product from the bottom, effectively preventing deformation due to gravity during cooling and curing. This is crucial for ensuring the shape accuracy and dimensional stability of the aircraft seat back. Supporting the extruded profile product can also reduce the internal stress and defects generated during cooling. These stresses and defects can lead to cracks and breaks in the product during use, thus affecting its strength and durability. By supporting the product from the bottom, it can be cooled and cured more evenly, thereby reducing these risks.

[0009] Preferably, the limiting component includes positioning protrusions, which are multiple and arranged in a circular array on the inner wall of the die pad. A positioning ring is fixed in the middle of the side wall of the die sleeve, which is also multiple and arranged in a linear array on the side wall of the die sleeve. The positioning protrusions and positioning rings are correspondingly set. This step, by setting the positioning protrusions and positioning rings, can improve the accuracy of the die pad and die sleeve during insertion and fixing, so that the die sleeve will not easily loosen or fall off the die pad when subjected to external forces such as vibration or bumps, thereby enhancing the stability of the connection. Moreover, this setting can prevent the die pad and die sleeve from loosening or displacement during operation, thereby maintaining the continuity and stability of the extrusion process, helping to reduce downtime caused by loosening between the die pad and die sleeve, and improving production efficiency.

[0010] Preferably, an air bladder is fixed in the middle of the side wall of the fixed seat. The air bladder is located between the mold pad and the fixed seat. An air tube is fixed in the middle of the side wall of the air bladder. Both the air bladder and the air tube are hollow and connected. Both the air bladder and the air tube are made of elastic material. By setting the air bladder and the air tube, the mold pad can be fixed inside the fixed seat from both sides, reducing the vibration and friction of the heated raw material during the extrusion process, thereby reducing the wear rate of the mold pad and the mold sleeve and extending the service life of the mold.

[0011] Preferably, the fixing component includes a limiting plate, and there are multiple limiting plates arranged in a linear array on the top of the mold pad. Both sides of the limiting plate are threaded with limiting rods. This step, by setting the limiting plates and limiting rods, can stably fix the mold pad inside the fixing seat, so that the heated raw material will not loosen or shift during the extrusion process, thereby improving the overall stability of the mold and reducing the decrease in the dimensional and shape accuracy of the extruded product caused by the shaking or displacement of the raw material.

[0012] Preferably, an anti-slip pad is fixed to the bottom side wall of the fourth fixing plate. The anti-slip pad slides on the top of the base. The anti-slip pad is made of anti-slip material. This step can increase the friction of the fourth fixing plate by setting the anti-slip pad, and prevent the fourth fixing plate from sliding or displacing when subjected to force.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The extrusion die for an aircraft seat back profile as described in this utility model, by setting a first support plate, a first fixed plate, a first supporting plate, a second fixed plate, and a first telescopic rod, can support the heated raw material from the bottom, effectively preventing it from sagging due to gravity, ensuring the straightness and dimensional accuracy of the extruded profile product. Supporting the heated raw material can also reduce the resistance during the extrusion process, thereby improving the extrusion speed and production efficiency of the aircraft seat back profile. At the same time, supporting the heated raw material can make the surface of the extruded profile smoother and more uniform, reducing scratches and ripples caused by the raw material sliding in the die pad and die sleeve, and improving the mechanical properties and durability of the profile product.

[0015] 2. The extrusion die for an aircraft seat back profile described in this utility model, by setting positioning protrusions and positioning rings, can improve the accuracy of the die pad and die sleeve during the insertion and fixing process, so that the die sleeve will not easily loosen or fall off the die pad when subjected to external forces such as vibration and bumps, thereby enhancing the stability of the connection. Moreover, this setting can prevent the die pad and die sleeve from loosening or displacement during operation, thereby maintaining the continuity and stability of the extrusion process, helping to reduce downtime caused by loosening between the die pad and die sleeve, and improving production efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a cross-sectional view of the fixing base in this utility model;

[0019] Figure 3 This is a schematic diagram of the cooperative structure of the support plate and the tray in this utility model;

[0020] Figure 4 This is a schematic diagram of the mating structure of the mold pad and mold sleeve in this utility model.

[0021] Legend:

[0022] 1. Base; 11. Fixing seat; 12. Mold pad; 13. Mold sleeve; 14. Upright plate; 15. Electric push rod; 16. Push plate; 2. First support plate; 21. First fixing plate; 22. First support plate; 23. Second fixing plate; 24. First telescopic rod; 3. Second support plate; 31. Third fixing plate; 32. Second support plate; 33. Fourth fixing plate; 34. Second telescopic rod; 4. Positioning protrusion; 41. Positioning ring; 5. Airbag; 51. Air tube; 6. Limiting plate; 61. Limiting rod; 7. Anti-slip pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 4As shown, an extrusion die for an aircraft seat back profile according to an embodiment of this utility model includes a base 1, a fixing seat 11 fixed to the top side wall of the base 1, a die pad 12 installed in the middle of the inner side wall of the fixing seat 11, a pressing component between the die pad 12 and the fixing seat 11, a die sleeve 13 slidably fitted in the middle of the inner side wall of the die pad 12, a limiting component between the die pad 12 and the die sleeve 13, a vertical plate 14 fixed to the top side wall of the base 1, an electric push rod 15 fixed to the middle of the side wall of the vertical plate 14, a push plate 16 fixed to the output end of the electric push rod 15, a supporting component in the middle of the side wall of the fixing seat 11, the supporting component being located between the base 1 and the vertical plate 14, a support component in the top side wall of the base 1, and a fixing component in the top side wall of the fixing seat 11. During operation, the operator inserts the die sleeve 13 into the die pad 12. At this time, the limiting component is used to fix the mold sleeve 13 to the inner wall of the mold pad 12. Then, the fixing component is used to fix the mold pad 12 to the fixing seat 11 from the top. Then, the heated raw material is inserted into the mold sleeve 13. The electric push rod 15 is activated. The electric push rod 15 will drive the push plate 16 to move. When the push plate 16 moves, it will contact the end of the raw material and push the raw material to move inside the mold sleeve 13. The heated raw material will be pushed through the mold core of the mold pad 12 and the mold sleeve 13, and then extruded from the core opening of the mold pad 12 to obtain the profile product required for the aviation seat back. When the heated raw material moves into the mold sleeve 13, the supporting component will restrict the position of the raw material from the bottom. At the same time, when the profile product moves out of the mold pad 12, the supporting component will restrict the position of the profile from the bottom.

[0026] like Figure 1 and Figure 2As shown, the supporting assembly includes a first support plate 2, which is located between the fixed base 11 and the push plate 16. A first fixed plate 21 is fixed to the middle of the side wall of the first support plate 2. A first support plate 22 is rotatably connected to the middle of the inner side wall of the first fixed plate 21. A torsion spring is provided between the first fixed plate 21 and the first support plate 22. A second fixed plate 23 is rotatably connected to the other end of the first support plate 22. The second fixed plate 23 is fixed to the side wall of the fixed base 11. A torsion spring is provided between the first support plate 22 and the second fixed plate 23. A first telescopic rod 24 is fixed to the bottom side wall of the first support plate 2. During operation, when the heated raw material moves towards the inside of the mold sleeve 13, the operator pulls the first support plate 2 to the bottom of the raw material. At this time, the heated raw material will slide on the inner wall of the first support plate 2. When the first support plate 2 moves, it will move the first fixed plate 21. At this time, the first fixed plate 21, the first support plate 22, and the second fixed plate 23 rotate relative to each other because the first... A torsion spring is provided between the fixed plate 21 and the first support plate 22, and a torsion spring is provided between the first support plate 22 and the second fixed plate 23. The first telescopic rod 24 will change its length automatically as the first support plate 2 moves. At this time, the first support plate 22 and the first telescopic rod 24 will fix the position of the first support plate 2. This step, by setting the first support plate 2, the first fixed plate 21, the first support plate 22, the second fixed plate 23 and the first telescopic rod 24, can support the heated raw material from the bottom, effectively preventing it from sagging due to gravity, ensuring the straightness and dimensional accuracy of the extruded profile product. Supporting the heated raw material can reduce the resistance in the extrusion process, thereby improving the extrusion speed and production efficiency of the profile for aircraft seat back. At the same time, supporting the heated raw material can make the surface of the extruded profile smoother and more uniform, reducing scratches and ripples caused by the sliding of the raw material in the die pad 12 and die sleeve 13, and improving the mechanical properties and durability of the profile product.

[0027] like Figure 1 and Figure 3As shown, the support assembly includes a second support plate 3, which is positioned above the base 1. A third fixing plate 31 is fixed to the middle of the side wall of the second support plate 3. The third fixing plates 31 are a pair and symmetrically arranged on both sides of the second support plate 3. A second support plate 32 is rotatably connected to the middle of the inner side wall of the third fixing plate 31. A torsion spring is provided between the third fixing plate 31 and the second support plate 32. A fourth fixing plate 33 is rotatably connected to the other end of the second support plate 32. A torsion spring is provided between the second support plate 32 and the fourth fixing plate 33. A second telescopic rod 34 is fixed to the bottom side wall of the second support plate 3. During operation, when the profile product moves towards the outside of the mold pad 12, the operator pulls the second support plate 3 to the bottom of the profile product. At this time, the profile product will slide on the inner wall of the second support plate 3. When the second support plate 3 moves, it will move the third fixing plate 31 along with it. At this time, the third fixing plate 31, the second support plate 32, and the fourth fixing plate 33 rotate relative to each other because the third fixing plate 31 and the second support plate 32 rotate relative to each other. A torsion spring is provided between the second support plates 32 and between the second support plate 32 and the fourth fixed plate 33. The second telescopic rod 34 will automatically change its length as the second support plate 3 moves. At this time, the second support plate 32 and the second telescopic rod 34 will fix the position of the second support plate 3. This step, by setting the second support plate 3, the third fixed plate 31, the second support plate 32, the fourth fixed plate 33 and the second telescopic rod 34, can support the extruded profile product from the bottom, effectively preventing it from deforming due to gravity during cooling and curing. This is crucial for ensuring the shape accuracy and dimensional stability of the aircraft seat back. Supporting the extruded profile product can also reduce the internal stress and defects generated during cooling. These stresses and defects can cause cracks and breaks in the product during use, thus affecting its strength and durability. By supporting the product from the bottom, it can be cooled and cured more evenly, thereby reducing these risks.

[0028] like Figure 4As shown, the limiting component includes multiple positioning protrusions 4 arranged in a circular array on the inner wall of the mold pad 12. Multiple positioning rings 41 are fixed to the middle of the side wall of the mold sleeve 13, arranged in a linear array on the side wall of the mold sleeve 13. The positioning protrusions 4 and positioning rings 41 are correspondingly arranged. During operation, the mold sleeve 13 is inserted into the mold pad 12. At this time, the multiple positioning rings 41 on the side wall of the mold sleeve 13 will contact the positioning protrusions 4 on the inner wall of the mold pad 12 respectively. Under the action of applied external force, the positioning protrusions 4 are positioned at the innermost positioning ring. On the positioning ring 41, this step, by setting the positioning protrusion 4 and the positioning ring 41, can improve the accuracy of the die pad 12 and the die sleeve 13 during the insertion and fixing process, so that the die sleeve 13 will not easily loosen or fall off the die pad 12 when subjected to external forces such as vibration or bumps, thereby enhancing the stability of the connection. Moreover, this setting can prevent the die pad 12 and the die sleeve 13 from loosening or shifting during operation, thereby maintaining the continuity and stability of the extrusion process, helping to reduce downtime caused by loosening between the die pad 12 and the die sleeve 13, and improving production efficiency.

[0029] like Figures 1 to 4 As shown, an airbag 5 is fixed in the middle of the side wall of the fixed base 11. The airbag 5 is located between the mold pad 12 and the fixed base 11. An air tube 51 is fixed in the middle of the side wall of the airbag 5. Both the airbag 5 and the air tube 51 are hollow and connected. Both the airbag 5 and the air tube 51 are made of elastic material. During operation, the operator injects air into the airbag 5 through the air tube 51, then seals the air tube 51, and then presses the mold pad 12 into the airbag 5. At this time, the airbag 5 is subjected to pressure, which squeezes the air at the bottom of the airbag 5 to both sides of the airbag 5, causing the sides of the airbag 5 to expand and clamp the mold pad 12 from both sides. This step, by setting the airbag 5 and the air tube 51, can fix the mold pad 12 inside the fixed base 11 from both sides, reducing the vibration and friction of the heated raw material during the extrusion process, thereby reducing the wear rate of the mold pad 12 and the mold sleeve 13 and extending the service life of the mold.

[0030] like Figure 1 , Figure 2 and Figure 4 As shown, the fixing component includes a limiting plate 6. There are multiple limiting plates 6, which are arranged in a linear array on the top of the mold pad 12. Both sides of the limiting plate 6 are threaded with limiting rods 61. By setting the limiting plates 6 and the limiting rods 61, the mold pad 12 can be stably fixed inside the fixing seat 11, so that the heated raw material will not loosen or shift during the extrusion process, thereby improving the overall stability of the mold and reducing the decrease in the dimensional and shape accuracy of the extruded product due to the shaking or displacement of the raw material.

[0031] like Figure 1 and Figure 3As shown, an anti-slip pad 7 is fixed to the bottom side wall of the fourth fixing plate 33. The anti-slip pad 7 slides on the top of the base 1. The anti-slip pad 7 is made of anti-slip material. This step can increase the friction of the fourth fixing plate 33 by setting the anti-slip pad 7, and prevent the fourth fixing plate 33 from sliding or displacing when subjected to force.

[0032] Working principle: When the operator inserts the mold sleeve 13 into the mold pad 12, the limiting component is used to fix the mold sleeve 13 to the inner wall of the mold pad 12. Then, the fixing component is used to fix the mold pad 12 to the fixing seat 11 from the top. Then, the heated raw material is inserted into the mold sleeve 13. The electric push rod 15 is activated, which drives the push plate 16 to move. When the push plate 16 moves, it contacts the end of the raw material and pushes the raw material to move inside the mold sleeve 13. The heated raw material is pushed through the mold core of the mold pad 12 and the mold sleeve 13, and then extruded from the core opening of the mold pad 12, thus obtaining the profile product required for the aircraft seat back. When the heated raw material moves into the mold sleeve 13... The supporting component restricts the position of the raw material from the bottom. Simultaneously, as the profile moves outward from the mold pad 12, the supporting component restricts the profile's position from the bottom. When the heated raw material moves inward from the mold sleeve 13, the worker pulls the first pallet 2 to the bottom of the raw material. At this time, the heated raw material slides on the inner wall of the first pallet 2. When the first pallet 2 moves, it carries the first fixing plate 21. At this time, the first fixing plate 21, the first support plate 22, and the second fixing plate 23 rotate relative to each other because a torsion spring is provided between the first fixing plate 21 and the first support plate 22, and between the first support plate 22 and the second fixing plate 23. The first telescopic... The rod 24 automatically changes length as the first support plate 2 moves. At this time, the first support plate 22 and the first telescopic rod 24 fix the position of the first support plate 2. When the profile product moves outwards towards the mold pad 12, the worker pulls the second support plate 3 to the bottom of the profile product. The profile product then slides on the inner wall of the second support plate 3. As the second support plate 3 moves, it carries the third fixing plate 31. At this time, the third fixing plate 31, the second support plate 32, and the fourth fixing plate 33 rotate relative to each other because a torsion spring is provided between the third fixing plate 31 and the second support plate 32, and between the second support plate 32 and the fourth fixing plate 33. The second telescopic rod 34 also automatically changes length as the first support plate 22 moves towards the mold pad 12. The second support plate 3 moves and changes its length automatically. At this time, the second support plate 32 and the second telescopic rod 34 will fix the position of the second support plate 3. The mold sleeve 13 is inserted into the mold pad 12. At this time, the multiple positioning rings 41 on the side wall of the mold sleeve 13 will contact the positioning protrusions 4 on the inner wall of the mold pad 12 respectively. Under the action of external force, the positioning protrusions 4 are positioned on the innermost positioning ring 41. The staff injects air into the airbag 5 through the air tube 51, then seals the air tube 51, and then presses the mold pad 12 into the airbag 5. At this time, the airbag 5 is subjected to pressure and squeezes the air at the bottom of the airbag 5 to both sides of the airbag 5, causing the sides of the airbag 5 to expand and clamp the mold pad 12 from both sides.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An extrusion die for a profile used in aircraft seat backrests, comprising a base (1), characterized in that: A fixing seat (11) is fixed to the top side wall of the base (1). A mold pad (12) is installed in the middle of the inner side wall of the fixing seat (11). A pressing component is provided between the mold pad (12) and the fixing seat (11). A mold sleeve (13) is slidably fitted in the middle of the inner side wall of the mold pad (12). A limiting component is provided between the mold pad (12) and the mold sleeve (13). A vertical plate (14) is fixed to the top side wall of the base (1). An electric push rod (15) is fixed in the middle of the side wall of the vertical plate (14). A push plate (16) is fixed to the output end of the electric push rod (15). A supporting component is provided in the middle of the side wall of the fixing seat (11). The supporting component is located between the base (1) and the vertical plate (14). A support component is provided on the top side wall of the base (1). A fixing component is provided on the top side wall of the fixing seat (11).

2. The extrusion die for an aircraft seat back profile according to claim 1, characterized in that: The supporting assembly includes a first support plate (2), which is disposed between the fixed base (11) and the push plate (16). A first fixing plate (21) is fixed in the middle of the side wall of the first support plate (2). A first support plate (22) is rotatably connected in the middle of the inner side wall of the first fixing plate (21). A torsion spring is provided between the first fixing plate (21) and the first support plate (22). A second fixing plate (23) is rotatably connected to the other end of the first support plate (22). The second fixing plate (23) is fixed on the side wall of the fixed base (11). A torsion spring is provided between the first support plate (22) and the second fixing plate (23). A first telescopic rod (24) is fixed in the bottom side wall of the first support plate (2).

3. The extrusion die for an aircraft seat back profile according to claim 1, characterized in that: The support assembly includes a second support plate (3) which is located above the base (1). A third fixing plate (31) is fixed to the middle of the side wall of the second support plate (3). The third fixing plates (31) are a pair and symmetrically arranged on both sides of the second support plate (3). A second support plate (32) is rotatably connected to the middle of the inner side wall of the third fixing plate (31). A torsion spring is provided between the third fixing plate (31) and the second support plate (32). A fourth fixing plate (33) is rotatably connected to the other end of the second support plate (32). A torsion spring is provided between the second support plate (32) and the fourth fixing plate (33). A second telescopic rod (34) is fixed to the bottom side wall of the second support plate (3).

4. The extrusion die for an aircraft seat back profile according to claim 1, characterized in that: The limiting component includes positioning protrusions (4), which are multiple and arranged in a circular array on the inner wall of the mold pad (12). A positioning ring (41) is fixed in the middle of the side wall of the mold sleeve (13), which is multiple and arranged in a linear array on the side wall of the mold sleeve (13). The positioning protrusions (4) and the positioning rings (41) are correspondingly arranged.

5. The extrusion die for an aircraft seat back profile according to claim 2, characterized in that: An airbag (5) is fixed in the middle of the side wall of the fixed seat (11). The airbag (5) is located between the mold pad (12) and the fixed seat (11). An air tube (51) is fixed in the middle of the side wall of the airbag (5). The airbag (5) and the air tube (51) are both hollow and connected. The airbag (5) and the air tube (51) are both made of elastic material.

6. The extrusion die for an aircraft seat back profile according to claim 1, characterized in that: The fixing component includes a limiting plate (6), and there are multiple limiting plates (6) arranged in a linear array on the top of the mold pad (12). Both sides of the limiting plate (6) are threadedly connected to limiting rods (61).

7. The extrusion die for an aircraft seat back profile according to claim 3, characterized in that: The bottom side wall of the fourth fixing plate (33) is fixed with an anti-slip pad (7), which slides on the top of the base (1). The anti-slip pad (7) is made of anti-slip material.

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