Silencing sodium isolation spraying table for sponge seat

Abstract

The utility model relates to the field of sponge seat processing, and particularly discloses a sponge seat noise reduction sodium isolation spraying table which comprises a box body, a bearing table mechanism and an air draft mechanism, and a box opening is formed in the side wall of the box body; the bearing table mechanism comprises a bearing table assembly, and the bearing table assembly is rotatably installed in the box body; the air draft mechanism is installed on the outer wall of the box body and used for exhausting air in the box body. In the process of spraying sodium muffling on the sponge seat, the environment of a workshop is not prone to being affected.

Description

Technical Field

[0001] The present application relates to the field of sponge seat processing, and in particular to a sponge seat sound-absorbing sodium isolation spraying station. Background Art

[0002] An important component of car seats is sponge. The processing steps of sponge seats are relatively traditional. Basically, they are formed through molds. After the sponge seats are formed, they need to be sprayed with sound-absorbing sodium.

[0003] In the related art, when spraying silencing sodium on a sponge seat, the sponge seat is placed on an open platform and then sprayed manually.

[0004] The above-mentioned related technologies have the following defects: the sponge seat is placed on an open platform for operation, and during the process of spraying the silencing sodium, odor and liquid are easy to float everywhere, affecting the workshop environment. Utility Model Content

[0005] In order to prevent the workshop environment from being easily affected during the process of spraying silencing sodium on the sponge seat, the present application provides a sponge seat silencing sodium isolation spraying station.

[0006] The present application provides a sponge seat silencing sodium isolation spraying station adopts the following technical solution:

[0007] A sponge seat silencing sodium isolation spraying table, comprising a box body, a bearing platform mechanism and an exhaust mechanism, wherein a box opening is provided on a side wall of the box body;

[0008] The bearing platform mechanism comprises a bearing platform assembly, and the bearing platform assembly is rotatably mounted in the box;

[0009] The exhaust mechanism is installed on the outer wall of the box body and is used to extract the gas in the box body.

[0010] By adopting the above technical solution, the sponge seat is placed on the supporting platform assembly, the exhaust mechanism is started, and then the silencing sodium is sprayed on the sponge seat. During the spraying of the silencing sodium, the angle of the sponge seat can be adjusted by rotating the supporting platform assembly. When spraying the silencing sodium on the sponge seat, the odor and spray generated during the spraying of the silencing sodium can be blocked by the box body, so that the odor and spray can only diffuse toward the box opening. While the exhaust mechanism continues to extract the gas in the box, the airflow enters the box from the box opening and is extracted and discharged by the exhaust mechanism. Then, the exhaust mechanism can extract the odor and spray and discharge them in a direction, so that the odor and spray are not easily diffused toward the box opening. In the process of spraying silencing sodium on the sponge seat, the present application can make the workshop environment less susceptible to influence.

[0011] Optionally, the bearing platform mechanism further includes an inner rotating shaft, a limiting through hole is provided on the bottom of the box body, the inner rotating shaft is arranged in the limiting through hole, and is rotatably connected to the box body through the limiting through hole;

[0012] The bearing platform assembly is connected to the inner rotating shaft.

[0013] By adopting the above technical solution, the support platform assembly rotates through the inner rotating shaft.

[0014] Optionally, the bearing platform mechanism further includes an inner base, which is disposed in the box body and connected to the inner rotating shaft;

[0015] The carrying platform assembly includes a first carrying platform and a second carrying platform, wherein the first carrying platform and the second carrying platform are arranged opposite to each other;

[0016] The first bearing platform and the second bearing platform are both installed at one end of the inner base away from the inner rotating shaft, and the first bearing platform and the second bearing platform can approach or move away synchronously.

[0017] By adopting the above technical solution, since the bottom of the sponge seat has a groove, the sponge seat can be fixed more stably. When the sponge seat is placed on the bearing platform assembly, the first bearing platform and the second bearing platform are extended into the groove, and the first bearing platform and the second bearing platform are synchronously moved away from each other. In the horizontal direction, the first bearing platform abuts against the inner side wall of one end of the groove, and the second bearing platform abuts against the inner side wall of the other end of the groove, so as to further limit the position of the sponge seat, so that the sponge seat can be fixed on the bearing platform assembly more stably.

[0018] Optionally, a slide groove is provided at one end of the inner base away from the inner rotating shaft, and the first bearing platform and the second bearing platform are partially extended into the slide groove, and are both slidably connected to the inner base through the slide groove.

[0019] By adopting the above technical solution, the first load-bearing platform and the second load-bearing platform are slidably connected between the slide groove and the inner base, so as to achieve the adjustment of the distance between the first load-bearing platform and the second load-bearing platform.

[0020] Optionally, the bearing platform mechanism further includes a driving screw, the driving screw including a first rotating shaft portion, a bidirectional screw portion and a second rotating shaft portion, the bidirectional screw portion is rotatably disposed in the slide groove, and the first end of the bidirectional screw portion is screwed to the first bearing platform, and the second end is screwed to the second bearing platform;

[0021] One end of the first rotating shaft portion is connected to the first end of the bidirectional screw portion, and the other end is rotatably connected to the inner base;

[0022] One end of the second rotating shaft portion is connected to the second end of the bidirectional screw portion, and the other end is rotatably connected to the inner base.

[0023] By adopting the above technical solution, the bidirectional screw portion drives the first bearing platform and the second bearing platform to move closer or farther synchronously by rotating the driving screw.

[0024] Optionally, the bearing platform mechanism further includes a limit assembly, the limit assembly is arranged outside the box, the limit assembly includes a pressure-bearing rotating shaft and a pressure block, and one end of the pressure-bearing rotating shaft is coaxially connected to the inner rotating shaft;

[0025] The pressing block is arranged on the box body, and the pressing block can move toward the pressure-bearing rotating shaft.

[0026] By adopting the above technical solution, when the bearing platform assembly does not need to rotate, the pressure block presses the compressed shaft, making it difficult for the compressed shaft to rotate, thereby making it difficult for the inner shaft to rotate, and thereby making it difficult for the bearing platform assembly to rotate.

[0027] Optionally, the limiting assembly further comprises a limiting tube, a limiting ring, a return spring and a pull rod, wherein the limiting tube is radially arranged on the side of the pressure-bearing rotating shaft and is connected to the box body;

[0028] The pressing block is arranged in the limiting tube and can slide along the length direction of the limiting tube;

[0029] The limiting ring is installed at one end of the limiting tube away from the pressure-bearing rotating shaft;

[0030] One end of the return spring is connected to the pressing block, and the other end is connected to the limiting ring;

[0031] The pull rod is arranged in the limiting ring, and one end of the pull rod is connected to the pressing block, and the other end is provided with a pull ring, and the pull ring is arranged outside the limiting tube.

[0032] By adopting the above technical solution, when the bearing platform assembly needs to rotate, the pull rod is pulled in the direction away from the compressed rotating shaft to make the pressure block away from the compressed rotating shaft. When the bearing platform assembly does not need to rotate, the pull rod is released, and under the action of the return spring, the pressure block moves in the direction of the compressed rotating shaft until it compresses the compressed rotating shaft to limit the rotation of the compressed rotating shaft.

[0033] Optionally, the exhaust mechanism includes an exhaust fan and an air inlet hood, the exhaust fan is installed on the outer wall of the box, the air inlet end of the air inlet hood is connected to the box, and the air outlet end of the air inlet hood is connected to the air inlet end of the exhaust fan.

[0034] By adopting the above technical solution, the exhaust fan and the air inlet hood cooperate with each other to extract the odor and spray in the box, thereby making it difficult for the odor and spray generated during the spraying of the silencing sodium to spread in the workshop.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. In the present application, the diffusion direction of the odor and spray generated during the spraying of the silencer sodium is limited by the box body, so that the odor and spray can only diffuse toward the box opening. When the exhaust mechanism continues to extract the gas in the box body, the airflow enters the box body from the box opening and is extracted and discharged by the exhaust mechanism. Then, the exhaust mechanism can extract the odor and spray and discharge them in a directed manner, so that the odor and spray are not easy to diffuse toward the box opening, and then the odor and spray are not easy to diffuse into the workshop, which can make the workshop environment less affected.

[0037] 2. In the present application, the support platform assembly is rotated by the inner shaft, so that the angle of the sponge seat can be adjusted conveniently when the sound-absorbing sodium is sprayed on the sponge seat.

[0038] 3. In the present application, the rotation of the support platform assembly is limited by a limit assembly. When the support platform assembly needs to rotate, the pull rod is pulled in the direction away from the compressed shaft to move the pressure block away from the compressed shaft. When the support platform assembly does not need to rotate, the pull rod is released, and under the action of the return spring, the pressure block moves in the direction of the compressed shaft until it compresses the compressed shaft, thereby limiting the rotation of the compressed shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0041] Figure 2 is along Figure 1 Schematic diagram of the cross-sectional structure along line AA.

[0042] Reference numerals:

[0043] 1. Box body; 11. Bracket; 101. Position-limiting through hole; 10. Box opening; 2. Carrying platform mechanism; 21. Carrying platform assembly; 211. First carrying platform; 2111. First sliding part; 2112. First carrying plate part; 2113. First pressing plate part; 212. Second carrying platform; 2121. Second sliding part; 2122. Second carrying plate part; 2123. Second pressing plate part; 22. Inner rotating shaft; 23. Inner base ; 2301, slide groove; 24, driving screw; 241, first rotating shaft portion; 242, bidirectional screw portion; 243, second rotating shaft portion; 240, handle; 25, limiting assembly; 251, pressure rotating shaft; 252, limiting tube; 253, pressure block; 254, limiting ring; 255, reset spring; 256, pull rod; 257, pull ring; 3, exhaust mechanism; 31, exhaust fan; 32, air inlet hood; 33, air outlet duct. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-2 This application is described in further detail.

[0045] The present application embodiment discloses a sponge seat sound-absorbing sodium isolation spraying station. Figure 1 and Figure 2 A sponge seat sound-absorbing sodium isolation spraying station includes a box body 1, a bearing platform mechanism 2 and an exhaust mechanism 3. The outer bottom of the box body 1 is provided with a bracket 11, the side wall of the box body 1 is provided with a box opening 10, and the bottom of the box body 1 is provided with a limiting through hole 101. The bearing platform mechanism 2 includes a bearing platform assembly 21 and an inner rotating shaft 22, and the bearing platform assembly 21 is rotatably installed in the box body 1. The inner rotating shaft 22 is arranged in the limiting through hole 101, and is rotatably connected to the box body 1 through the limiting through hole 101, and the bearing platform assembly 21 is connected to the inner rotating shaft 22. The exhaust mechanism 3 is installed on the outer wall of the box body 1, and is used to extract the gas in the box body 1. The exhaust mechanism 3 includes an exhaust fan 31, an air inlet hood 32 and an air outlet pipe 33. The exhaust fan 31 is installed on the outer wall of the box body 1. The air inlet end of the air inlet hood 32 is connected to the box body 1, the air outlet end of the air inlet hood 32 is connected to the air inlet end of the exhaust fan 31, and the air inlet end of the air outlet pipe 33 is connected to the air outlet end of the exhaust fan 31.

[0046] Reference Figure 1 and Figure 2In the embodiment of the present application, by starting the exhaust fan 31, the gas in the box 1 is discharged through the air inlet hood 32 and the air outlet pipe 33 in sequence. The sponge seat is placed on the bearing platform assembly 21. Under the action of the inner rotating shaft 22, the bearing platform assembly 21 can be rotated to adjust the angle of the bearing platform assembly 21. Then, silencing sodium is sprayed on the sponge seat at the box opening 10. During the spraying of silencing sodium, the angle of the sponge seat can be adjusted by rotating the bearing platform assembly 21. When spraying silencing sodium on the sponge seat, the odor and spray generated during the spraying of silencing sodium can be blocked by the box 1, so that the odor and spray can only diffuse in the direction of the box opening 10. When the exhaust mechanism 3 continuously extracts the gas in the box 1, the airflow enters the box 1 from the box opening 10 and is extracted and discharged by the exhaust mechanism 3. Then, the exhaust mechanism 3 can extract the odor and spray and discharge them in a directional manner, so that the odor and spray are not easy to diffuse from the box opening 10 to the workshop.

[0047] Reference Figure 1 and Figure 2 The platform mechanism 2 further includes an inner base 23, which is disposed in the box body 1 and connected to the inner rotating shaft 22. The platform assembly 21 includes a first platform 211 and a second platform 212, which are arranged opposite to each other. The first platform 211 and the second platform 212 are both mounted at one end of the inner base 23 away from the inner rotating shaft 22, and the first platform 211 and the second platform 212 can be synchronously approached or synchronously moved away.

[0048] Reference Figure 1 and Figure 2, a slide groove 2301 is provided at one end of the inner base 23 away from the inner rotating shaft 22, and the first bearing platform 211 and the second bearing platform 212 are partially extended into the slide groove 2301, and are both slidably connected to the inner base 23 through the slide groove 2301. The first bearing platform 211 and the second bearing platform 212 are symmetrically arranged with the inner rotating shaft 22 as the symmetry axis. The first bearing platform 211 includes a first sliding portion 2111, a first bearing plate portion 2112 and a first pressing plate portion 2113, and the first sliding portion 2111 is slidably connected to the inner base 23 through the slide groove 2301. The first bearing plate portion 2112 is arranged above the inner base 23, and the first bearing plate portion 2112 is connected to one end of the first sliding portion 2111 away from the second sliding portion 2121, and the first pressing plate portion 2113 is arranged below the first bearing plate portion 2112, and the first pressing plate portion 2113 is connected to one end of the first bearing plate portion 2112 away from the first sliding portion 2111. The second bearing platform 212 includes a second sliding portion 2121, a second bearing plate portion 2122, and a second pressing plate portion 2123. The second sliding portion 2121 is slidably connected to the inner base 23 via a slide groove 2301. The second bearing plate portion 2122 is disposed above the inner base 23, and is connected to an end of the second sliding portion 2121 away from the first sliding portion 2111. The second pressing plate portion 2123 is disposed below the second bearing plate portion 2122, and is connected to an end of the second bearing plate portion 2122 away from the second sliding portion 2121.

[0049] Reference Figure 1 and Figure 2 In the embodiment of the present application, since the bottom of the sponge seat has a groove, the sponge seat is fixed more stably. When the sponge seat is placed on the bearing platform assembly 21, the first bearing platform 211 and the second bearing platform 212 are extended into the groove, and the first bearing plate portion 2112 and the second bearing plate portion 2122 hold the sponge seat. The first bearing platform 211 and the second bearing platform 212 move away from each other synchronously, and in the horizontal direction, the first pressing plate portion 2113 presses against the inner side wall of one end of the groove, and the second pressing plate portion 2123 presses against the inner side wall of the other end of the groove, so as to further limit the sponge seat, so that the sponge seat can be fixed on the bearing platform assembly 21 more stably.

[0050] Reference Figure 1 and Figure 2The bearing platform mechanism 2 also includes a driving screw 24, which includes a first rotating shaft portion 241, a bidirectional screw portion 242, and a second rotating shaft portion 243. The bidirectional screw portion 242 is rotatably disposed in the slide groove 2301, and the first end of the bidirectional screw portion 242 is screwed to the first bearing platform 211, and the second end is screwed to the second bearing platform 212. One end of the first rotating shaft portion 241 is connected to the first end of the bidirectional screw portion 242, and the other end is rotatably connected to the inner base 23. One end of the second rotating shaft portion 243 is connected to the second end of the bidirectional screw portion 242, and the other end is rotatably connected to the inner base 23. A handle 240 connected to the first rotating shaft portion 241 is provided on the side of the inner base 23. The driving screw 24 is rotated by the handle 240, and then the bidirectional screw portion 242 drives the first bearing platform 211 and the second bearing platform 212 to move closer or farther from each other synchronously.

[0051] Reference Figure 1 and Figure 2 The bearing platform mechanism 2 also includes a limiting assembly 25, which is arranged outside the box body 1. The limiting assembly 25 includes a pressure shaft 251, a limiting tube 252, a pressure block 253, a limiting ring 254, a return spring 255, a pull rod 256 and a pull ring 257. One end of the pressure shaft 251 is coaxially connected to the inner shaft 22. The pressure block 253 is arranged on the box body 1, and the pressure block 253 can move toward the pressure shaft 251. The limiting tube 252 is radially arranged on the side of the pressure shaft 251 and is connected to the box body 1. The pressure block 253 is arranged in the limiting tube 252 and can slide along the length direction of the limiting tube 252. The limiting ring 254 is installed at one end of the limiting tube 252 away from the pressure shaft 251. One end of the return spring 255 is connected to the pressure block 253, and the other end is connected to the limiting ring 254. The pull rod 256 is disposed in the limiting ring 254 , and one end of the pull rod 256 is connected to the pressing block 253 , and the other end of the pull rod 256 is provided with a pull ring 257 , and the pull ring 257 is disposed outside the limiting tube 252 .

[0052] Reference Figure 1 and Figure 2 In the embodiment of the present application, when the platform assembly 21 needs to rotate, the pull rod 256 is pulled away from the pressure shaft 251 to move the pressing block 253 away from the pressure shaft 251. When the platform assembly 21 does not need to rotate, the pull rod 256 is released, and under the action of the return spring 255, the pressing block 253 moves toward the pressure shaft 251 until it presses the pressure shaft 251, thereby limiting the rotation of the pressure shaft 251.

[0053] The implementation principle of a sponge seat silencing sodium isolation spraying station in the embodiment of the present application is:

[0054] The exhaust mechanism 3 is operated, and by starting the exhaust fan 31 , the gas in the box body 1 is discharged through the air inlet cover 32 and the air outlet pipe 33 in sequence.

[0055] The sponge seat is placed on the bearing platform assembly 21. Since the bottom of the sponge seat has a groove, the sponge seat is fixed more stably. When placing the sponge seat on the bearing platform assembly 21, the first bearing platform 211 and the second bearing platform 212 are extended into the groove, and the first bearing plate portion 2112 and the second bearing plate portion 2122 hold the sponge seat. The first bearing platform 211 and the second bearing platform 212 are moved away from each other synchronously. In the horizontal direction, the first pressing plate portion 2113 presses against the inner side wall of one end of the groove, and the second pressing plate portion 2123 presses against the inner side wall of the other end of the groove, so as to further limit the position of the sponge seat, so that the sponge seat can be fixed on the bearing platform assembly 21 more stably.

[0056] At the box opening 10, the sponge seat is sprayed with silencing sodium. During the spraying process, the angle of the sponge seat can be adjusted by rotating the supporting platform assembly 21. When the sponge seat is sprayed with silencing sodium, the odor and spray generated during the spraying process can be blocked by the box body 1, so that the odor and spray can only diffuse toward the box opening 10. When the exhaust mechanism 3 continuously extracts the gas in the box body 1, the airflow enters the box body 1 from the box opening 10 and is extracted and discharged by the exhaust mechanism 3. Then, the exhaust mechanism 3 can extract the odor and spray and discharge them in a directional manner, so that the odor and spray are not easily diffused from the box opening 10 to the workshop.

[0057] After the sponge seat is sprayed, the distance between the first loading platform 211 and the second loading platform 212 is shortened, and the sponge seat is taken out.

[0058] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0059] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sponge seat silencing sodium isolation spraying station, characterized by: It comprises a box body (1), a supporting platform mechanism (2) and an exhaust mechanism (3), wherein a side wall of the box body (1) is provided with a box opening (10); The bearing platform mechanism (2) comprises a bearing platform component (21), and the bearing platform component (21) is rotatably mounted in the box (1); The exhaust mechanism (3) is installed on the outer wall of the box (1) and is used to extract the gas in the box (1).

2. The sodium-silencing spraying station for sponge seats according to claim 1 is characterized by: The bearing platform mechanism (2) further comprises an inner rotating shaft (22); a limiting through hole (101) is provided on the bottom of the box body (1); the inner rotating shaft (22) is arranged in the limiting through hole (101) and is rotatably connected to the box body (1) via the limiting through hole (101); The bearing platform assembly (21) is connected to the inner rotating shaft (22).

3. The sodium-silencing spraying station for sponge seats according to claim 2 is characterized by: The bearing platform mechanism (2) further comprises an inner base (23), wherein the inner base (23) is arranged in the box body (1) and is connected to the inner rotating shaft (22); The carrying platform assembly (21) comprises a first carrying platform (211) and a second carrying platform (212), wherein the first carrying platform (211) and the second carrying platform (212) are arranged opposite to each other; The first bearing platform (211) and the second bearing platform (212) are both mounted on an end of the inner base (23) away from the inner rotating shaft (22), and the first bearing platform (211) and the second bearing platform (212) can move toward or away from each other synchronously.

4. The sodium-silencing spraying station for sponge seats according to claim 3 is characterized by: A slide groove (2301) is provided at one end of the inner base (23) away from the inner rotating shaft (22); the first bearing platform (211) and the second bearing platform (212) both partially extend into the slide groove (2301) and are both slidably connected to the inner base (23) via the slide groove (2301).

5. The sodium-silencing spraying station for sponge seats according to claim 4 is characterized by: The bearing platform mechanism (2) further comprises a driving screw (24), wherein the driving screw (24) comprises a first rotating shaft portion (241), a bidirectional screw portion (242) and a second rotating shaft portion (243), wherein the bidirectional screw portion (242) is rotatably disposed in the slide groove (2301), and a first end of the bidirectional screw portion (242) is screwed to the first bearing platform (211), and a second end of the bidirectional screw portion (242) is screwed to the second bearing platform (212); One end of the first rotating shaft portion (241) is connected to the first end of the bidirectional screw portion (242), and the other end is rotatably connected to the inner base (23); One end of the second rotating shaft portion (243) is connected to the second end of the bidirectional screw portion (242), and the other end is rotatably connected to the inner base (23).

6. The sodium-silencing spraying station for sponge seats according to claim 5 is characterized by: The bearing platform mechanism (2) further comprises a limit assembly (25), wherein the limit assembly (25) is arranged outside the box body (1), and the limit assembly (25) comprises a pressure-bearing rotating shaft (251) and a pressure block (253), wherein one end of the pressure-bearing rotating shaft (251) is coaxially connected to the inner rotating shaft (22); The pressing block (253) is arranged on the box body (1), and the pressing block (253) is capable of moving towards the pressure-bearing rotating shaft (251).

7. The sodium-silencing spraying station for sponge seats according to claim 6 is characterized by: The limiting assembly (25) further comprises a limiting tube (252), a limiting ring (254), a return spring (255) and a pull rod (256); the limiting tube (252) is radially arranged on the side of the pressure-bearing rotating shaft (251) and is connected to the box body (1); The pressing block (253) is arranged in the limiting tube (252) and is capable of sliding along the length direction of the limiting tube (252); The limiting ring (254) is installed at one end of the limiting tube (252) away from the pressure-bearing rotating shaft (251); One end of the return spring (255) is connected to the pressing block (253), and the other end is connected to the limiting ring (254); The pull rod (256) is disposed inside the limiting ring (254), one end of which is connected to the pressing block (253), and the other end of which is provided with a pull ring (257), and the pull ring (257) is disposed outside the limiting tube (252).

8. The sodium-silencing spraying station for sponge seats according to claim 1 is characterized by: The air extraction mechanism (3) comprises an air extractor (31) and an air inlet cover (32); the air extractor (31) is mounted on the outer wall of the box body (1); an air inlet end of the air inlet cover (32) is in communication with the box body (1); and an air outlet end of the air inlet cover (32) is connected to an air inlet end of the air extractor (31).

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