Spraying equipment for seat chassis

Abstract

The invention provides spraying equipment for a seat chassis, which comprises a moving platform, at least two clamping mechanisms arranged on the moving platform, and a spraying mechanism arranged on the side of the moving platform and matched with the clamping mechanisms, the clamping mechanism comprises a workbench rotationally arranged on the movable platform, an annular groove formed in the workbench and a plurality of positioners movably arranged in the annular groove, connecting shafts are rotationally arranged at the tops of the positioners and used for being connected with the base plate, adjusting grooves are formed in the sides of the positioners, adjusting blocks are movably arranged in the adjusting grooves, and the adjusting blocks are movably arranged in the adjusting grooves. One end of the adjusting block protrudes out of the side of the positioner, and the other end of the adjusting block is provided with a positioning block, so that the positioning block abuts against the side of the annular groove when the positioner is positioned relative to the annular groove; the spraying uniformity of the seat chassis is improved, and the spraying efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of seats, in particular to a spraying device for a seat chassis. Background Art

[0002] A seat usually includes a chassis, rollers, seat, backrest and other structures. The existing seat, backrest and other structures are often made of leather, textile and other fabrics, so they usually do not require additional painting process. The chassis is used to support the entire seat, and its outer surface usually needs to be painted to improve its appearance, crack resistance, anti-oxidation and other functions.

[0003] However, when the existing chassis is painted, the paint spraying equipment used is basically common paint spraying equipment. Its advantage is that all kinds of products can be sprayed through common paint spraying equipment. The disadvantage is that there is no adaptability for each product. The structure of the seat chassis is relatively special. It usually has five, six or even more support arms. Commonly used spraying equipment basically sprays the product from top to bottom through multiple spray heads. However, since the seat chassis has more support arms, the position of the side of the support arm is difficult to directly spray through the spray head, which makes the spraying uniformity of the seat chassis not high, making it impossible for the existing common spraying equipment to perform adaptive spraying for the special structure of the seat chassis. Summary of the Invention

[0004] An object of the present invention is to provide a spraying device for a seat pan, which improves the spraying uniformity of the seat pan and increases the spraying efficiency.

[0005] In order to solve the above technical problems, the present invention provides a spraying device for a seat chassis, comprising a mobile platform, at least two clamping mechanisms arranged on the mobile platform, and a spraying mechanism arranged on the side of the mobile platform and matching the clamping mechanism. The clamping mechanism comprises a workbench rotatably arranged on the mobile platform, an annular groove opened at the workbench, and a plurality of positioners movably arranged in the annular groove. A connecting shaft is rotatably arranged on the top of the positioner, and the connecting shaft is used to connect to the chassis. An adjustment groove is opened on the side of the positioner, and an adjustment block is movably installed in the adjustment groove. One end of the adjustment block protrudes from the side of the positioner, and the other end has a positioning block, so that when the positioner is positioned relative to the annular groove, the positioning block presses against the side of the annular groove.

[0006] Furthermore, a first guide groove is opened on the side of the adjustment block, a first guide rod matching the first guide groove is provided on the inner side of the adjustment groove, and a first elastic member is connected between the adjustment block and the adjustment groove.

[0007] Furthermore, a detachable connection limiter is provided in the middle of the workbench, and the limiter is provided with a plurality of limit rods spaced circumferentially. A card slot is provided at one end of the limit rod close to the locator, and a movable slot is provided on the side of the locator. A movable block is movable inside the movable slot, and a card rod matching the card slot is connected to the side of the movable block, so that when the card rod is buckled in the card slot, the locator and the limiter are matched.

[0008] Furthermore, one side of the adjusting block has a first inclined surface, the side of the moving block close to the adjusting block has a second inclined surface matching the first inclined surface, and one side of the moving block is provided with a second guide groove, the side of the moving groove has a second guide rod matching the second guide groove, and a second elastic member is provided between the moving block and the moving groove so that when the adjusting block moves, the moving block moves along the second guide rod.

[0009] Furthermore, the spray mechanism includes a lifting platform that is lifted and lowered, and a plurality of spray chambers arranged circumferentially along the bottom of the lifting platform. A movable block is movably installed inside the spray chamber, and a plurality of first spray heads are connected to the bottom of the movable block.

[0010] Furthermore, a liquid inlet is provided at the spray bin, and a first pipeline matching the liquid inlet is provided at the movable block. The liquid inlet and the first pipeline are connected by a bellows. A third elastic member is connected to the inside of the spray bin by the movable block, and the first pipeline is connected to each first spray head.

[0011] Furthermore, a plurality of second spray heads are arranged opposite to each other on both sides of the spray bin, the second spray heads are arranged tilted upward, and second pipes connected to the second spray heads are opened inside both sides of the spray bin, and through grooves matching the second pipes are opened on both sides of the first pipe, so that when the movable block is in the initial position, the second pipes and the through grooves are misaligned with each other, and when the movable block is pressed, the through grooves are connected to the second pipes.

[0012] Furthermore, a sealing ring is arranged on the outer periphery of the end portion of the first spray head.

[0013] Furthermore, a limiting ring groove is provided on the top of the positioner, the limiting ring groove is provided along the outer circumference of the connecting shaft, and a limiting ring is detachably connected in the limiting ring groove so that the limiting ring cover is provided on the outer circumference of the end portion of the connecting shaft.

[0014] Furthermore, the annular groove is provided with a disassembly opening so that the positioner can enter or leave the annular groove through the disassembly opening, and a plurality of drainage openings are provided at the bottom of the annular groove along the circumferential direction.

[0015] The beneficial effects of the present invention are that: the two clamping mechanisms are driven by the mobile platform to move horizontally to switch the processing positions. When one of the clamping mechanisms is located at the lower side of the spray mechanism, the seat chassis is fixed by the clamping mechanism, and the seat chassis is adaptively sprayed in cooperation with the spray mechanism. At the same time, the clamping mechanism at the other processing position can perform the disassembly and installation operations of the seat chassis, so that after the current seat chassis is sprayed, the sprayed seat chassis can be quickly moved out by the mobile platform, and the seat chassis to be sprayed can be moved to the lower side of the spray mechanism, which can effectively improve the overall efficiency of the spraying.

[0016] At the same time, when the seat chassis is clamped and fixed by the clamping mechanism, since the rollers are not installed on the seat chassis during painting, the connection between the seat chassis and the rollers can be connected and fixed with the connecting shaft, and when adapting to different numbers of support arms such as five or six spokes, the locators are moved and adjusted along the annular groove so that the position of each locator matches the end of the seat chassis support arm, and is connected to each support arm through each connecting shaft, thereby ensuring the overall stability of the seat chassis.

[0017] In addition, when adjusting the position of the locator, by pressing the adjustment block to move toward the inside of the adjustment groove, the adjustment block drives the positioning block away from the inner wall of the annular groove, so that the locator can be moved and adjusted along the annular groove. After the adjustment of the locator is completed, the adjustment block is released to reset the adjustment block, and then the positioning block is reset to the inner wall of the annular groove, so that the positioning block can tighten and fix the position of the locator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a side view of the present invention.

[0020] Figure 3 This invention Figure 2 Section along line AA.

[0021] Figure 4 This invention Figure 3 A partial enlarged view of point A in the middle.

[0022] Figure 5 This invention Figure 3 A partial enlarged view of point B in the middle.

[0023] Figure 6 It is a front view of the present invention.

[0024] Figure 7 This invention Figure 6 Cross-section along line BB.

[0025] Figure 8 This invention Figure 7 A partial enlarged view of point C in the middle.

[0026] 1. The movable platform; 2. The working table; 3. The ring groove; 4. The positioner; 5. The connecting shaft; 6. The adjusting groove; 7. The adjusting block; 8. The positioning block; 9. The first guide groove; 10. The first guide rod; 11. The first elastic member; 12. The limiter; 13. The limit rod; 14. The clamping groove; 15. The movable groove; 16. The movable block; 17. The clamping rod; 18. The first inclined surface; 19. The second inclined surface; 20. The second guide groove; 21. The second guide rod; 22. The second elastic member; 23. The lifting platform; 24. The spray chamber; 25. The movable block; 26. The first spray head; 27. The liquid inlet; 28. The first pipeline; 29. The bellows; 30. The third elastic member; 31. The second spray head; 32. The second pipeline; 33. The through groove; 34. The sealing ring; 35. The limiting ring groove; 36. The limiting ring; 37. The disassembly port; 38. The drain port. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0028] It should be understood by those skilled in the art that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0029] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0030] like Figures 1-8The present invention provides a spraying device for a seat chassis, comprising a mobile platform 1, at least two clamping mechanisms arranged on the mobile platform 1, and a spraying mechanism arranged on the side of the mobile platform 1 and matching the clamping mechanism. The clamping mechanism comprises a workbench 2 rotatably arranged on the mobile platform 1, an annular groove 3 opened at the workbench 2, and a plurality of positioners 4 movably arranged in the annular groove 3. A connecting shaft 5 is rotatably arranged on the top of the positioner 4, and the connecting shaft 5 is used to connect to the chassis. An adjustment groove 6 is opened on the side of the positioner 4, and an adjustment block 7 is movably installed in the adjustment groove 6. One end of the adjustment block 7 protrudes from the side of the positioner 4, and the other end has a positioning block 8, so that when the positioner 8 is positioned relative to the annular groove 3, the positioning block 8 presses against the side of the annular groove 3.

[0031] The two clamping mechanisms are driven by the mobile platform to move horizontally to switch the processing position. When one of the clamping mechanisms is located at the lower side of the spray mechanism, the seat chassis is fixed by the clamping mechanism, and the seat chassis is adaptively sprayed in cooperation with the spray mechanism. At the same time, the clamping mechanism at the other processing position can perform the disassembly and installation operations of the seat chassis, so that after the current seat chassis is sprayed, the sprayed seat chassis can be quickly moved out by the mobile platform, and the seat chassis to be sprayed can be moved to the lower side of the spray mechanism, which can effectively improve the overall efficiency of the spraying.

[0032] At the same time, when the seat chassis is clamped and fixed by the clamping mechanism, since the rollers are not installed on the seat chassis during painting, the connection between the seat chassis and the rollers can be connected and fixed with the connecting shaft, and when adapting to different numbers of support arms such as five or six spokes, the locators are moved and adjusted along the annular groove so that the position of each locator matches the end of the seat chassis support arm, and is connected to each support arm through each connecting shaft, thereby ensuring the overall stability of the seat chassis.

[0033] In addition, when adjusting the position of the locator, by pressing the adjustment block to move toward the inside of the adjustment groove, the adjustment block drives the positioning block away from the inner wall of the annular groove, so that the locator can be moved and adjusted along the annular groove. After the adjustment of the locator is completed, the adjustment block is released to reset the adjustment block, and then the positioning block is reset to the inner wall of the annular groove, so that the positioning block can tighten and fix the position of the locator.

[0034] In one embodiment of the present scheme, there are guide rails on both sides of the mobile platform, and the mobile platform is controlled to move horizontally along the guide rails by a servo motor in conjunction with a screw transmission method; the workbench is rotatably installed on the mobile platform, and the workbench is controlled to rotate by a servo motor in conjunction with a synchronous belt drive or a gear transmission method; the seat chassis has an internal thread at the position for connecting the roller, and a matching external thread is provided at the connecting shaft, so that the seat chassis can be tightened and fixed by rotating the connecting shaft.

[0035] It is worth mentioning that the adaptability of this solution includes seat chassis support arms with different numbers of widths, painted surfaces on the sides of the support arms, and roller connecting threads of different specifications. Only when the outer diameter of the seat chassis changes significantly is it necessary to switch to a different workbench or mobile platform for use. This can greatly improve the adaptability to the seat chassis and reduce the frequency of equipment replacement.

[0036] Preferably, a first guide groove 9 is opened on the side of the adjustment block 7, a first guide rod 10 matching the first guide groove 9 is provided inside the adjustment groove 6, and a first elastic member 11 is connected between the adjustment block 7 and the adjustment groove 6.

[0037] Specifically, when the adjusting block is pressed, the first guide groove and the first guide rod are matched so that the first guide rod can guide and position the pressing direction of the adjusting block to ensure the accurate contraction of the positioning block, and after the adjusting block is released, the adjusting block can be popped out and reset by the first elastic member, and the reset direction of the positioning block can be guided by the first guide rod.

[0038] The first elastic member may be a spring structure.

[0039] In a preferred embodiment of this solution, the installation position of the first elastic member is located between the pressing position of the adjustment block and the positioning block, and is biased toward the pressing position of the adjustment block to ensure that the positioning block will not be difficult to retract when the adjustment block is pressed.

[0040] Preferably, a detachable connection limiter 12 is provided at the middle position of the workbench 2, and the limiter 12 is provided with a plurality of limit rods 13 spaced circumferentially. A card slot 14 is provided at one end of the limit rod 13 close to the locator 4, and a movable slot 15 is provided on the side of the locator 4. A movable block 16 is movable inside the movable slot 15, and a card rod 17 matching the card slot 14 is connected to the side of the movable block 16, so that when the card rod 17 is buckled in the card slot 14, the locator 4 matches the limiter 12.

[0041] Specifically, when adapting to seat chassis with different numbers of spans, the number of locators is matched with the number of spans to ensure that different support arms of the seat chassis can be connected to the locators, and the limiters are replaced synchronously to ensure that the number of spans of the limiters is consistent with the number of spans of the seat chassis. After replacing the limiters, each locator is moved to the corresponding position of the end of each limit rod of the limiter. At this time, the moving block descends relative to the moving slot, causing the clamping rod to fall, and then the limit rod can slide to the side of the locator without being affected by the interference of the clamping rod. Then the moving block resets upward and drives the clamping rod to rise and buckle into the clamping slot, so that the clamping rod and the clamping slot match each other, and then the locator and the limit rod match each other, so that the position of each locator can be quickly and accurately located, and the subsequent stable use can be guaranteed.

[0042] In one embodiment of the present scheme, a mounting groove is provided in the middle of the workbench, and a mounting block matching the mounting groove is provided on the lower side of the limiter, and both the mounting block and the mounting groove are arranged in a square or polygonal structure to ensure that the limiter will not rotate relative to the workbench.

[0043] Preferably, one side of the adjusting block 7 has a first inclined surface 18, the side of the moving block 16 close to the adjusting block 7 has a second inclined surface 19 matching the first inclined surface 18, and one side of the moving block 16 is provided with a second guide groove 20, and the side of the moving groove 15 has a second guide rod 21 matching the second guide groove 20, and a second elastic member 22 is provided between the moving block 16 and the moving groove 15, so that when the adjusting block 7 moves, the moving block 16 moves along the second guide rod 21.

[0044] Specifically, when the adjusting block is pressed, the first inclined surface moves to a position away from the second inclined surface, so that the moving block moves along the second guide rod under the push of the second elastic member, thereby driving the card rod to move downward. At this time, the limit rod can avoid the limit of the card rod, thereby causing the limit rod to move to the side of the locator. Then, after releasing the adjusting block, the first inclined surface moves to the second inclined surface, and the first inclined surface is used to tilt and push the second inclined surface, so that the moving block moves upward along the moving groove, thereby driving the card rod to rise and buckle into the card slot, so that the locator and the limiter match.

[0045] When installing, the first inclined surface and the second inclined surface need to be properly coated with lubricating oil or grease to ensure that the first inclined surface and the second inclined surface can stably push the moving block upward; the second elastic member can adopt a spring structure.

[0046] Preferably, the spray mechanism includes a lifting platform 23 that is lifted and lowered, and a plurality of spray chambers 24 arranged circumferentially along the bottom of the lifting platform 23. A movable block 25 is movably installed inside the spray chamber 24, and a plurality of first spray heads 26 are connected to the bottom of the movable block 25.

[0047] Specifically, by descending the lifting platform, several spray chambers are driven to descend synchronously, and at the same time, several first spray heads are used to perform preliminary spraying on various positions of the seat chassis. At this time, the support arms of the seat chassis are located at the lower side of each spray chamber to ensure spraying uniformity.

[0048] In one embodiment of the present scheme, a suspension is provided on the side of the mobile platform, and the lifting platform is connected to the suspension through a telescopic rod, and the telescopic rod is controlled to extend and retract by an oil cylinder, and the lifting platform and the spray bin are connected by a connecting rod, and the connecting rod and the lifting platform are detachably connected by bolts and other connecting parts. When replacing seat chassis with different numbers of sections, the same number of spray bins are replaced synchronously.

[0049] Preferably, a liquid inlet 27 is provided at the spray chamber 24, and a first pipeline 28 matching the liquid inlet 27 is provided at the movable block 25. The liquid inlet 27 and the first pipeline 28 are connected by a bellows 29. The movable block 25 is connected to the inside of the spray chamber 24 via a third elastic member 30, and the first pipeline 28 is connected to each first spray head 26.

[0050] Specifically, the spray liquid is introduced into the bellows through the liquid inlet, and then the spray liquid enters the first pipeline, so that each first spray head can spray the spray liquid. The setting of the third elastic member can enable the third elastic member to maintain a pushing state on the movable block, and then the movable block drives several first spray heads to always be in the initial position for spraying operations, thereby improving the stability of the spraying.

[0051] The third elastic member may be a spring structure; the outer side of the liquid inlet is connected to an external liquid supply device through a water pipe.

[0052] Preferably, a plurality of second spray heads 31 are arranged opposite to each other on both sides of the spray bin 24, the second spray heads 31 are arranged obliquely upward, and second pipes 32 connected to the second spray heads 31 are opened inside the two sides of the spray bin 24, and through grooves 33 matching the second pipes 32 are opened on both sides of the first pipe 28, so that when the movable block 25 is in the initial position, the second pipe 32 and the through groove 33 are staggered with each other, and when the movable block 25 is pressed, the through groove 33 is connected to the second pipe 32.

[0053] Specifically, when the first spray head descends with the spray bin to a position close to the seat chassis, the spraying operation is suspended. At the same time, the workbench drives the seat chassis to rotate a certain angle, so that the spray bin and the support arms of the seat chassis are staggered. At this time, the spray bin continues to descend until the movable block and several first spray heads are against the surface of the workbench, thereby causing the movable block to rise relative to the spray bin and compress the third elastic member. At the same time, the nozzle positions of several first spray heads are blocked. At this time, the delivery of the spray liquid is restarted. Since the first spray head is blocked and the movable block rises, the through groove is connected with the second pipeline, that is, the first pipeline is connected with the second pipeline, so that the spray liquid enters the second pipeline and is sprayed through several second spray heads arranged upward. Since the spray bin is located between the two adjacent support arms at this time, the spraying operation surface of the second spray head is the side of the support arm, so that each position of the seat chassis can be evenly sprayed.

[0054] Preferably, a sealing ring 34 is arranged on the outer periphery of the end of the first spray head 26, so that when the first spray head is against the surface of the workbench, the sealing ring can further strengthen the sealing of the first spray head, so as to ensure the spraying stability of the second spray head and effectively prevent the nozzle position of the first spray head from being damaged by collision.

[0055] Among them, the sealing ring can be supported by rubber material.

[0056] Preferably, a limiting ring groove 35 is opened on the top of the locator 4, and the limiting ring groove 35 is opened along the outer periphery of the connecting shaft 5, and a limiting ring 36 is detachably connected in the limiting ring groove 35 so that the limiting ring 36 is covered on the outer periphery of the end of the connecting shaft 5.

[0057] Specifically, a limiting ring is installed in the limiting ring groove, and the connecting shaft is limited by the limiting ring so that the connecting shaft can only rotate to prevent the connecting shaft from detaching from the locator. When the connecting shaft needs to be replaced with an adapter, the connecting shaft can be removed from the locator by disassembling the limiting ring.

[0058] The limiting ring can be connected to the limiting ring groove by means of bolts or other connection methods.

[0059] Preferably, the annular groove 3 is provided with a disassembly opening 37 so that the positioner 4 can enter or exit the annular groove 3 through the disassembly opening 37 , and a plurality of drainage openings 38 are provided at the bottom of the annular groove 3 along the circumferential direction.

[0060] Specifically, when the number of positioners needs to be changed, the positioners can be moved to the disassembly opening so that they can be removed or installed from the disassembly opening to ensure that the number of positioners is consistent with the number of widths of the seat chassis.

[0061] At the same time, since a lot of waste liquid will be generated during spraying, a large amount of waste liquid will be avoided from remaining in the ring groove. Therefore, this solution opens a drain outlet through which the waste liquid can be recycled and processed.

[0062] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A spraying device for a seat chassis, characterized in that: The invention comprises a mobile platform (1), at least two clamping mechanisms arranged on the mobile platform (1), and a spraying mechanism arranged on the side of the mobile platform (1) and matched with the clamping mechanism. The clamping mechanism comprises a workbench (2) rotatably arranged on the mobile platform (1), an annular groove (3) provided at the workbench (2), and a plurality of positioners (4) movably arranged in the annular groove (3). A connecting shaft (5) is rotatably provided on the top of the positioner (4), and the connecting shaft (5) is used to connect to the chassis. An adjusting groove (6) is provided on the side of the positioner (4), and an adjusting block (7) is movably installed in the adjusting groove (6). One end of the adjusting block (7) protrudes from the side of the positioner (4), and the other end has a positioning block (8), so that when the positioner (4) is positioned relative to the annular groove (3), the positioning block (8) abuts against the side of the annular groove (3).

2. The seat pan spraying device according to claim 1, characterized in that: A first guide groove (9) is provided on the side of the adjusting block (7), a first guide rod (10) matching the first guide groove (9) is provided inside the adjusting groove (6), and a first elastic member (11) is connected between the adjusting block (7) and the adjusting groove (6).

3. The spraying device for a seat chassis according to claim 1, characterized in that: A detachable limiter (12) is connected to the middle of the workbench (2), and a plurality of limit rods (13) are arranged at intervals along the circumference of the limiter (12). A clamping groove (14) is provided at one end of the limit rod (13) close to the locator (4). A movable groove (15) is provided on the side of the locator (4), and a movable block (16) is arranged inside the movable groove (15). A clamping rod (17) matching the clamping groove (14) is connected to the side of the movable block (16), so that when the clamping rod (17) is buckled in the clamping groove (14), the locator (4) and the limiter (12) are matched.

4. The spraying device for a seat chassis according to claim 3, characterized in that: One side of the adjusting block (7) has a first inclined surface (18), and the side of the moving block (16) close to the adjusting block (7) has a second inclined surface (19) matching the first inclined surface (18), and one side of the moving block (16) is provided with a second guide groove (20), and the side of the moving groove (15) has a second guide rod (21) matching the second guide groove (20), and a second elastic member (22) is provided between the moving block (16) and the moving groove (15), so that when the adjusting block (7) moves, the moving block (16) moves along the second guide rod (21).

5. The spraying device for a seat chassis according to claim 1, characterized in that: The spray mechanism comprises a lifting platform (23) that is lifted and lowered, and a plurality of spray chambers (24) arranged circumferentially along the bottom of the lifting platform (23). A movable block (25) is movably installed inside the spray chamber (24), and a plurality of first spray heads (26) are connected to the bottom of the movable block (25).

6. The spraying device for the seat chassis according to claim 5, characterized in that: The spray chamber (24) is provided with a liquid inlet (27), and the movable block (25) is provided with a first pipeline (28) matching the liquid inlet (27). The liquid inlet (27) and the first pipeline (28) are connected via a bellows (29). The movable block (25) is connected to the interior of the spray chamber (24) via a third elastic member (30), and the first pipeline (28) is connected to each first spray head (26).

7. The spraying device for a seat chassis according to claim 6, characterized in that: A plurality of second spray heads (31) are arranged opposite to each other on both sides of the spray bin (24), the second spray heads (31) are arranged tilted upward, and second pipes (32) communicating with the second spray heads (31) are provided inside the two sides of the spray bin (24), and through grooves (33) matching the second pipes (32) are provided on both sides of the first pipe (28), so that when the movable block (25) is in the initial position, the second pipes (32) and the through grooves (33) are displaced from each other, and when the movable block (25) is pressed, the through grooves (33) are connected to the second pipes (32).

8. The spraying device for a seat chassis according to claim 6, characterized in that: A sealing ring (34) is arranged on the outer periphery of the end of the first spray head (26).

9. The spraying device for a seat chassis according to claim 1, characterized in that: A limiting ring groove (35) is provided on the top of the positioner (4), and the limiting ring groove (35) is provided along the outer periphery of the connecting shaft (5). A limiting ring (36) is detachably connected in the limiting ring groove (35), so that the limiting ring (36) is covered on the outer periphery of the end of the connecting shaft (5).

10. The spraying device for a seat chassis according to claim 1, characterized in that: The annular groove (3) is provided with a disassembly opening (37) so that the positioner (4) can enter or leave the annular groove (3) through the disassembly opening (37). The bottom of the annular groove (3) is provided with a plurality of drainage openings (38) along the circumferential direction.

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