Supporting platform and engraving system for aircraft cushion

Abstract

The invention provides a novel supporting platform and an engraving system for an airplane cushion, the novel supporting platform comprises a connecting seat and six driving units used for supporting the connecting seat, the six driving units are circumferentially distributed below the connecting seat, and each driving unit comprises a supporting slope with the top being an inclined supporting slope and a supporting platform with the bottom being a supporting slope. The inclination directions of every two adjacent supporting slopes are opposite. The driving block is movably positioned on the supporting inclined surface; the driving mechanism is used for driving the driving block to move along the length direction of the driving inclined surface; the driving rod and the linkage rods are coaxial, the linkage rods are inclined, the inclination directions of every two adjacent linkage rods are opposite, and the inclination direction of the supporting inclined face is the same as the inclination direction of the corresponding linkage rod. The bottom of the driving rod and the driving block are connected through the universal joint, and the top of the linkage rod and the connecting base are connected through the universal joint.

Description

Technical Field

[0001] The invention belongs to the technical field of seat cushion production and relates to a support platform and a carving system for aircraft seat cushions. Background Art

[0002] As the name implies, a cushion is used to support the human body when sitting. Cushions are found in daily household use, airplanes, high-speed trains, etc. Different cushions are used in different occasions, but cushions usually mainly include an internal elastic structure and a cover; the internal elastic structure is usually made of sponge, foaming materials, etc. For example, the internal elastic structure of the cushions of airplanes and high-speed trains is made of foaming materials.

[0003] In actual use, the seat cushions of airplanes, high-speed trains, etc. are not fixed in shape, but need to be customized according to specific requirements. Before production, several samples are first produced according to the design drawings, and then the samples are sent for testing and trial. If the test is qualified and the trial satisfaction is high, mass production can be carried out at this time; on the contrary, if the test is unqualified or the trial satisfaction is low, the product needs to be further optimized. In the production process of the sample, it usually mainly includes a driving structure (gantry) with XYZ three-axis movement, and then there is a vertical engraving tool (or milling tool) on the driving mechanism, which rotates at high speed according to the imported data; at the same time, there is a support platform under the engraving tool, and there is a negative pressure plate on the support platform, which is hollow and has multiple holes on the top; when producing the sample, the foam material (block) is placed on the negative pressure plate, and then the negative pressure tube connected to the negative pressure plate draws negative pressure into the negative pressure plate, so that the foam material can be adsorbed and fixed on the negative pressure plate. After that, the engraving tool rotates at high speed under the drive of the motor, and the driving mechanism drives the engraving tool to move, thereby milling the corresponding shape on the foam material. Moreover, when carving or milling the side of the foam material, the support platform drives the negative pressure plate to change its angle, and the driving mechanism can be used to process the side of the foam material, thereby processing corresponding grooves on the side. Summary of the invention

[0004] The purpose of the present invention is to provide a new supporting platform.

[0005] In order to achieve the above technical effects, the present invention provides a supporting platform, including a connecting seat and six driving units for supporting the connecting seat, the six driving units are distributed in a circular shape below the connecting seat, and the driving units include:

[0006] A support seat, wherein the top of the support seat is an inclined support slope, and the inclination directions of two adjacent support slopes are opposite;

[0007] A driving block, the driving block is movably located on the supporting inclined surface;

[0008] A driving mechanism, the driving mechanism is used to drive the driving block to move along the length direction of the driving inclined surface;

[0009] A driving rod and a linkage rod rotatably connected to the top of the driving rod, the driving rod and the linkage rod are coaxial, the linkage rod is inclined, and the inclination directions of two adjacent linkage rods are opposite, and the inclination direction of the supporting inclined surface is the same as the inclination direction of the corresponding linkage rod;

[0010] A universal joint is used to connect the bottom of the driving rod and the driving block, and the top of the linkage rod and the connecting seat.

[0011] The present invention is further configured such that two guide rails are arranged in parallel on the top of the driving inclined surface, the bottom of the driving block is movably engaged with the two guide rails, two driving seats are relatively arranged on the top of the supporting inclined surface, a driving screw is rotatably arranged between the two driving seats, a driving motor for driving the driving screw is arranged on the driving inclined surface, the driving screw passes through the driving block and is threadedly engaged with the driving block.

[0012] The present invention is further configured such that the projections of all the driving screw rods in the vertical direction are tangent to the same circle, and when the connecting seat is in a horizontal state, the projections of all the linkage rods in the vertical direction are tangent to another same circle.

[0013] The present invention is further configured such that a support tube and a fixing frame are fixedly provided on the side of the support seat, and movable rods are provided at both ends of the support tube so as to movably pass through the support tube, and the outer wall of the movable rod is fitted to the support tube, and a movable part is provided on the outer wall of the movable rod, and the movable rod is higher than the fixing frame, and the straight line where the movable rod is located intersects with the fixing frame, and a fixed wheel is rotatably provided in the fixing frame;

[0014] Also included are:

[0015] an elastic member which is continuously in a compressed state, the elastic member being located in the support tube, one end of the elastic member being in contact with the movable portion, and the other end being in contact with the inner wall of the support tube, the elastic member being located between the movable portion and the fixing frame;

[0016] A movable frame, wherein a movable wheel is rotatably arranged inside the movable frame, the movable frame is located between the fixed frame and the supporting cylinder, and the movable frame is fixedly connected to the bottom of the movable rod;

[0017] A transmission cable, one end of which is connected to the fixing frame, and the other end of which is used to apply an upward force to the driving block, and a middle portion of which passes through the fixing wheel and the movable wheel in sequence.

[0018] The present invention is further configured such that a connecting cable is provided between the movable frame and the movable rod, a support rod is provided inside the fixed frame, the support rod is horizontally rotatably connected to the support base, both the fixed frame and the movable frame are in the shape of a Chinese character 'Ri', the fixed wheel is rotatably connected to the middle of the fixed frame, and the movable wheel is rotatably connected to the middle of the movable wheel.

[0019] The present invention is further configured such that limiting grooves for the driving cable to be snapped into are respectively formed in the middle of the outer sides of the fixed wheel and the movable wheel, a plurality of the fixed wheels and the movable wheels are provided, and the number of strands of the driving cable bypassing the movable frame is greater than or equal to 4;

[0020] Two transmission seats are oppositely arranged on the side of the support base, a support column is provided between the two transmission seats, a transmission column is movably sleeved on the support column, the free end of the driving cable is connected to the transmission column, a strip-shaped rack body is provided on the side of the driving block, and the straight lines where the driving screw rod is located, the straight line where the rack body is located, the straight line where the transmission column is located, the straight line where the support column is located, the straight line where the movable rod is located, and the straight line where the driving cable between the transmission column and the fixed frame is located are all parallel or collinear;

[0021] A transmission gear and a steering gear are rotatably provided on the side of the support base, the bottom of the transmission gear is meshed with the top of the transmission column, the top is meshed with the bottom of the steering gear, and the top of the steering gear is meshed with the bottom of the rack body.

[0022] The present invention is further configured such that two rack bodies are provided, the two rack bodies are located on both sides of the driving block, and steering gears are provided at the bottoms of both driving blocks;

[0023] The steering gear includes a coaxial first gear portion and a second gear portion, the first gear portion is fixedly connected to the second gear portion, and the diameter of the first gear portion is greater than that of the second gear portion. The top of the first gear portion is meshed with the corresponding rack body, and the bottom of the second gear portion is meshed with the transmission gear.

[0024] The present invention is further configured such that the elastic member includes a plurality of disc spring pieces, the inner sides of the disc spring pieces are attached to the movable rod, and there is a set distance between the outer sides and the inner wall of the support cylinder, wherein:

[0025] The longitudinal section of the support column is rectangular, and the outer wall of the support column is movably attached to the transmission column;

[0026] Or:

[0027] The longitudinal section of the support column is circular, and the outer wall of the support column is movably fitted to the transmission column, and the inner side of the transmission column is movably fitted to the support seat;

[0028] or:

[0029] A clearance opening is provided on the transmission seat which vertically passes through the support column and is located between the support column and the fixing frame. The longitudinal section of the transmission column matches the longitudinal sections of the support column and the clearance opening. The end of the transmission cable movably passes through the clearance opening and is connected to the portion of the transmission column located in the clearance opening.

[0030] The present invention is further configured such that first columns are horizontally arranged on both sides of the driving block, second columns and third columns are horizontally rotatably arranged on both sides of the support seat, and the second columns and the third columns are located at both ends of the support seat;

[0031] It also includes an elastic body that is continuously in an extended state, one end of the elastic body is fixedly connected to the first column, the other end is connected to the second column or the third column, the middle part is wound around the second column and the third column several times in sequence, and the elastic body continuously applies an upward force to the first column.

[0032] The present invention also discloses an engraving system for aircraft seat cushions, comprising:

[0033] A support platform as described in any one of the above items;

[0034] A negative pressure plate, which is connected to the top of the connecting seat, is in a cavity shape, and has a plurality of positioning holes on the top of the negative pressure plate;

[0035] A support frame, the support frame is in a U-shape with an opening downward, two support frames are provided, and the two support frames are distributed on both sides of the connecting seat in the X direction;

[0036] A first sliding sleeve, wherein the first sliding sleeve is movably sleeved on the top of the support frame, a first screw rod and a first motor for driving the first screw rod are horizontally rotatably arranged on the support frame, the first screw rod passes through the first sliding sleeve and is threadedly matched with the first sliding sleeve;

[0037] A Y-axis frame, both ends of which are fixedly connected to the two first sliding sleeves, and the longitudinal section of the Y-axis frame is rectangular;

[0038] A second sliding sleeve, wherein the second sliding sleeve is movably sleeved on the Y-axis frame, two Y-axis seats are arranged at both ends of the top of the Y-axis frame, a second screw rod is arranged horizontally and rotatably between the two Y-axis seats, and a second motor for driving the second screw rod is arranged on the top of the Y-axis frame;

[0039] A Z-axis frame, the Z-axis frame is vertically connected to the side of the second sliding sleeve, the cross section of the Z-axis frame is in the shape of an Ω, and a third screw rod and a third motor for driving the third screw rod are vertically rotatably arranged on the Z-axis frame;

[0040] A buckle sliding member, wherein the buckle sliding member is movably buckled to the Z-axis frame, and the third screw rod passes through the buckle sliding member and is threadedly engaged with the buckle sliding member;

[0041] The fourth motor is vertically arranged on the side of the buckled sliding member, and a milling cutter is vertically arranged at the bottom of the output shaft of the fourth motor, and the milling cutter is located above the negative pressure plate.

[0042] Compared with the prior art, the present invention provides a support platform. When in use, the object whose position is to be adjusted (the object can be the seat lining of an airplane or a high-speed railway, or other objects that need to be supported, and the fixing method to the support platform is not limited to the negative pressure plate, that is, it can be fixed in other forms, such as by bolts, magnets, etc.) is fixed or placed on a connecting seat, and the connecting seat is supported and driven by six linkage rods; during use, the six linkage rods cooperate with each other to adjust the position and angle of the connecting seat.

[0043] The linkage rod and the driving rod are both adjusted in position by the driving block. During adjustment, the driving mechanism drives the driving block to move along the supporting inclined plane. Since the supporting inclined plane is inclined, the driving block not only changes its position but also its height when it moves, and the angles of the driving rod and the linkage rod may also change accordingly. Then, by controlling the six driving mechanisms through the program to drive the corresponding driving blocks, the connecting seat can obtain a combined effect and finally present the activity mode required by the connecting seat, such as rotation or tilting, so that the connecting seat can achieve six-degree-of-freedom activities.

[0044] During the activity, the driving rod and the driving block, as well as the linkage rod and the connecting seat are rotatably connected via universal joints (preferably common cross-axis universal joints or Hooke's hinges or cross hinges), and the linkage rod and the driving rod can also rotate relative to each other, so that the activity of the connecting seat can proceed normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of a support platform embodiment 1 of the present invention;

[0046] Figure 2 yes Figure 1 A magnified view of part A;

[0047] Figure 3 yes Figure 2 A magnified view of part B;

[0048] Figure 4 is a schematic diagram of a driving unit in a first embodiment of a supporting platform of the present invention;

[0049] Figure 5 yes Figure 4 Enlarged view of part C;

[0050] Figure 6 yes Figure 4 A magnified view of part D in the middle;

[0051] Figure 7 It is a schematic diagram of a transmission column and a support column in a second embodiment of a support platform of the present invention;

[0052] Figure 8 It is a partial enlarged view of a transmission column in a second embodiment of a support platform of the present invention;

[0053] Fig. 9 It is a structural schematic diagram of an engraving system for an aircraft seat cushion of the present invention;

[0054] Fig.10 yes Fig. 9 Enlarged view of part E.

[0055] Among them, 1, connecting seat; 2, supporting seat; 3, supporting inclined plane; 4, driving block; 5, driving rod; 6, linkage rod; 7, universal joint; 8, guide rail; 9, driving seat; 10, driving screw; 11, driving motor; 12, supporting cylinder; 13, fixing frame; 14, movable rod; 15, movable part; 16, fixed wheel; 17, elastic member; 18, movable frame; 19, movable wheel; 20, transmission cable; 21, connecting cable; 22, supporting rod; 23, limiting groove; 24, transmission seat; 25, supporting column; 26, transmission column; 27, rack body; 2 8. Transmission gear; 29. ​​First gear portion; 30. Second gear portion; 31. Make way; 32. First column; 33. Second column; 34. Third column; 35. Elastic body; 36. Negative pressure plate; 37. Support frame; 38. First sliding sleeve; 39. First screw rod; 40. First motor; 41. Y-axis frame; 42. Second sliding sleeve; 43. Y-axis seat; 44. Second screw rod; 45. Second motor; 46. Z-axis frame; 47. Third screw rod; 48. Third motor; 49. Snap-on sliding member; 50. Fourth motor; 51. Milling cutter. DETAILED DESCRIPTION

[0056] The following is a further detailed description of a support platform and an engraving system for an aircraft seat cushion proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0057] Example 1

[0058] A support platform and an engraving system for an aircraft seat cushion, such as Figures 1 to 6 As shown, it includes a connection base 1 and six drive units for supporting the connection base 1, and the six drive units are distributed in a circle below the connection base 1. The drive units include:

[0059] A support seat 2, wherein the top of the support seat 2 is an inclined support slope 3, and the inclination directions of two adjacent support slopes 3 are opposite, that is, the highest end of each support seat 2 is adjacent to the highest end of the adjacent support seat 2, and the lowest end is adjacent to the lowest end of the adjacent support seat 2;

[0060] A driving block 4, wherein the driving block 4 is movably located on the supporting inclined surface 3;

[0061] A driving mechanism, the driving mechanism is used to drive the driving block 4 to move along the length direction of the driving inclined surface;

[0062] A driving rod 5 and a linkage rod 6 rotatably connected to the top of the driving rod 5 (preferably the two are connected by a bearing to reduce resistance), the driving rod 5 is coaxial with the linkage rod 6, the linkage rod 6 is inclined, and the inclination directions of two adjacent linkage rods 6 are opposite (two adjacent linkage rods 6 are in an eight-shaped shape with the opening facing upward or downward), the inclination direction of the supporting inclined surface 3 is the same as the inclination direction of the corresponding linkage rod 6 (for example, if the supporting inclined surface 3 is higher on the left and lower on the right, then the corresponding linkage rod 6 is also higher on the left and lower on the right, but the inclinations of the two are not equal, specifically, the inclination angle of the linkage rod 6 is greater than the inclination angle of the supporting inclined surface 3);

[0063] The bottom of the driving rod 5 and the driving block 4 as well as the top of the linkage rod 6 and the connecting seat 1 are connected via the universal joint 7 .

[0064] Two guide rails 8 are arranged in parallel on the top of the driving inclined surface, and the bottom of the driving block 4 is movably engaged with the two guide rails 8; wherein the longitudinal section of the guide rail 8 is T-shaped or Ω-shaped, and can be stably engaged with the driving block 4.

[0065] At the top of the supporting inclined plane 3, there are two driving seats 9 arranged oppositely. A driving lead screw 10 is rotatably arranged between the two driving seats 9. A driving motor 11 for driving the driving lead screw 10 is arranged on the driving inclined plane. The driving lead screw 10 passes through the driving block 4 and is in threaded cooperation with the driving block 4.

[0066] The projections of all the driving lead screws 10 on the vertical direction are tangent to the same circle. When the connecting seat 1 is in a horizontal state, the projections of all the linkage rods 6 on the vertical direction are tangent to another same circle.

[0067] On the side of the supporting seat 2, a supporting cylinder 12 and a fixing frame 13 are fixedly arranged. A movable rod 14 is movably arranged through both ends of the supporting cylinder 12. The outer wall of the movable rod 14 is in contact with the inner wall of the supporting cylinder 12. An active part 15 is arranged on the outer wall of the movable rod 14. The movable rod 14 is higher than the fixing frame 13, and the straight line where the movable rod 14 is located intersects with the fixing frame 13. A fixed wheel 16 is rotatably arranged in the fixing frame 13.

[0068] It also includes:

[0069] An elastic member 17 continuously in a compressed state. The elastic member 17 is located in the supporting cylinder 12. One end of the elastic member 17 abuts against the active part 15, and the other end abuts against the inner wall of the supporting cylinder 12. The elastic member 17 is located between the active part 15 and the fixing frame 13.

[0070] A movable frame 18. A movable wheel 19 is rotatably arranged in the movable frame 18. The movable frame 18 is located between the fixing frame 13 and the supporting cylinder 12. The movable frame 18 is fixedly connected to the bottom of the movable rod 14.

[0071] A transmission cable 20. One end of the transmission cable 20 is connected to the fixing frame 13, and the other end is used to apply an upward acting force to the driving block 4. The middle part sequentially bypasses the fixed wheel 16 and the movable wheel 19.

[0072] A connecting cable 21 is arranged between the movable frame 18 and the movable rod 14. A support rod 22 is arranged inside the fixing frame 13. The support rod 22 is horizontally rotatably connected to the supporting seat 2. Both the fixing frame 13 and the movable frame 18 are in a shape of "day". The fixed wheel 16 is rotatably connected to the middle part of the fixing frame 13, and the movable wheel 19 is rotatably connected to the middle part of the movable wheel 19.

[0073] The fixed wheel 16 and the movable wheel 19 are provided with a limiting groove 23 for the transmission cable 20 to be inserted in the middle of the outer side, so that the transmission cable 20 can be prevented from being separated from the fixed wheel 16 or the movable wheel 19, thereby improving the use stability of the transmission cable 20. The fixed wheel 16 and the movable wheel 19 are provided with a plurality of strands, and the number of strands of the transmission cable 20 passing around the movable frame 18 is greater than or equal to 4;

[0074] Two transmission seats 24 are relatively arranged on the side of the support seat 2, a support column 25 is arranged between the two transmission seats 24, a transmission column 26 is movably sleeved on the support column 25, the free end of the transmission cable 20 is connected to the transmission column 26, and a long strip-shaped rack body 27 is arranged on the side of the driving block 4, and the straight line where the driving screw 10 is located, the straight line where the rack body 27 is located, the straight line where the transmission column 26 is located, the straight line where the support column 25 is located, the straight line where the movable rod 14 is located, and the straight line where the transmission cable 20 between the transmission column 26 and the fixed frame 13 is located are all parallel or collinear;

[0075] A transmission gear 28 and a steering gear are rotatably provided on the side of the support seat 2. The bottom of the transmission gear 28 meshes with the top of the transmission column 26, the top meshes with the bottom of the steering gear, and the top of the steering gear meshes with the bottom of the rack body 27.

[0076] The rack bodies 27 are provided with two, and the two rack bodies 27 are located on both sides of the driving block 4, and the bottoms of the two driving blocks 4 are provided with the steering gear;

[0077] The steering gear includes a coaxial first gear portion 29 and a second gear portion 30, the first gear portion 29 is fixedly connected to the second gear portion 30, and the diameter of the first gear portion 29 is larger than the diameter of the second gear portion 30, the top of the first gear portion 29 is meshed with the corresponding rack body 27, and the bottom of the second gear portion 30 is meshed with the transmission gear 28. The side of the support seat 2 has a structure for supporting the transmission gear 28, the first gear portion 29 and the second gear portion 30 to rotate.

[0078] The elastic member 17 includes a plurality of disc springs, the inner side of which is in contact with the movable rod 14, and the outer side of which is spaced apart from the inner wall of the support tube 12 by a set distance, wherein:

[0079] The longitudinal section of the support column 25 is circular, and the outer wall of the support column 25 is movably fitted to the transmission column 26, and the inner side of the transmission column 26 is movably fitted to the support seat 2, so that the transmission column 26 can maintain its angle and not rotate, and can only move along the length direction of the support column 25;

[0080] The present invention provides a support platform and an engraving system for an airplane seat cushion. When in use, the object whose position is to be adjusted (the object can be the seat cushion lining of an airplane or a high-speed rail, or other objects that need to be supported, and the fixing method with the support platform is not limited to a negative pressure plate, that is, it can be fixed in other forms, such as by bolts, magnetism, etc.) is fixed or placed on a connecting seat 1, and the connecting seat 1 is supported and driven by six linkage rods 6; during use, the six linkage rods 6 cooperate with each other to adjust the position and angle of the connecting seat 1.

[0081] The positions of the linkage rod 6 and the driving rod 5 are both adjusted by the driving block 4. During the adjustment, the driving mechanism drives the driving block 4 to move along the supporting slope 3. Since the supporting slope 3 is inclined, the driving block 4 not only changes its position but also changes its height during the movement, and the angles of the driving rod 5 and the linkage rod 6 may also change accordingly. Then, by controlling the six driving mechanisms through the program to drive the corresponding driving blocks 4, the connecting seat 1 can obtain a combined effect and finally present the desired activity mode, such as rotation or tilting, so that the connecting seat 1 can achieve six-degree-of-freedom activities.

[0082] During the activity, the driving rod 5 and the driving block 4 as well as the linkage rod 6 and the connecting seat 1 are rotatably connected via a universal joint 7 (preferably a common cross-axis universal joint or Hooke's hinge or a cross hinge). At the same time, the linkage rod 6 and the driving rod 5 can also rotate relative to each other, so that the activity of the connecting seat 1 can proceed normally.

[0083] In actual use, after receiving the corresponding signal, the driving motor 11 drives the driving screw 10 to rotate, and at the same time, the driving screw 10 drives the driving block 4 to move along the guide rail 8, and at the same time drives the driving rod 5, the linkage rod 6 and the connecting seat 1 to move.

[0084] During the entire use process, the elastic member 17 is in a compressed state, and the elastic force generated by the elastic member 17 is relatively large (for example, the disc spring obtains a relatively large elastic force through a certain combination method, or a spring with a relatively large wire diameter is used). At the same time, the elastic member 17 applies an elastic force to the movable part 15 in a direction away from the movable frame 18. The elastic force is transmitted to the transmission column 26 through the movable part 15, the movable rod 14, the movable frame 18 (suspended state), and the connecting cable 21, and makes the transmission column 26 have a tendency to move upward in an inclined manner.

[0085] The transmission column 26 acts on the bottom of the transmission gear 28, the transmission gear 28 acts on the bottom of the second gear portion 30, and the second gear portion 30 acts on the first gear portion 29, and the first gear portion 29 acts on the bottom of the rack body 27, so that the rack body 27 has an upward force; this force can balance the mass of the connecting seat 1 and the object located on the connecting seat 1, thereby reducing the burden on the drive motor 11, while reducing the power requirement for the drive motor 11, and also increasing the smoothness and continuity of the drive block 4 during movement.

[0086] When the driving block 4 is in motion, its stroke is set to S, and the diameter ratio of the first gear portion 29 to the second gear portion 30 is a, so that the stroke of the transmission column 26 is S / a, and the length of the transmission cable 20 being pulled is also S / a.

[0087] During the traction process, the number of strands of the transmission cable 20 that pass around (or through) the movable frame 18 is b (if the number of movable wheels 19 and the number of fixed wheels 16 are both two, then b=4; if the number of movable wheels 19 and the number of fixed wheels 16 are both three, then b=6, and so on). Therefore, the movable distance of the movable frame 18 is S / (a*b), and the movable distance of the movable part 15 and the length change of the elastic member 17 are also S / (a*b). By setting the values ​​of a and b according to the actual situation, the value of S / (a*b) can be made smaller, that is, the elastic deformation of the elastic member 17 is very small. According to Hooke's law, it can be seen that at this time, it can be ensured that the elastic force generated by the elastic member 17 will not change too much, so that the upward force can be applied to the drive block 4 more stably.

[0088] The pressure exerted by the elastic member 17 on the movable portion 15 is set to F, and the upward force received by the driving block 4 is theoretically F / (a*b) (the actual force received will be lower than the theoretical value, because each structure will produce losses during the transmission process). Therefore, in order to make the driving block 4 receive the required auxiliary force during actual use, the elastic member 17 also needs to be adaptively adjusted (such as adjusting the practical combination of the disc spring) or selected (such as selecting the thickness of the disc spring or the wire diameter of the spring).

[0089] Moreover, in the process of supporting the connecting seat 1, the lower the height of the driving block 4 is, the greater the pressure it is subjected to. At the same time, since the elastic deformation of the elastic member 17 is also large, according to Hooke's law, the value of F at this time is also large, and therefore the upward auxiliary force (or balancing force) applied to the driving block 4 is also greater. Therefore, in actual use, the connecting seat 1 is also the lowest place, and the upward balancing force applied to the driving block 4 is also greater. In this way, the comprehensive protection effect on the driving motor 11 is also better, and the maximum power requirement is also lower, and the running smoothness of the driving block 4 can also be better guaranteed; and the elastic force of the elastic member 17 is automatically adjusted in real time without the intervention of other structures, and the use effect is better.

[0090] In summary: this embodiment can reduce the deformation of the elastic member 17 during the entire use process through the movable frame 18, the movable wheel 19, the fixed frame 13, the fixed wheel 16, the transmission cable 20, the first gear portion 29 and the second gear portion 30, and ensure that the upward auxiliary force exerted on the driving block 4 is close as a whole; but at the same time, it can also adjust the size of the auxiliary force on the driving block 4 to a certain extent in real time according to the different pressures exerted on the driving block 4, and make the auxiliary force exerted on the driving block 4 have a positive correlation with the pressure.

[0091] During use, both sides of the driving block 4 are provided with a rack body 27, which not only improves the activity and displacement stability of the driving block 4, but also reduces the elastic force requirement of the elastic member 17. At the same time, since each structure has corresponding losses when transmitting the force, it is necessary to design the elastic force of the elastic member 17 to be slightly greater than the theoretical value in the initial design stage. At the same time, during use, the movable rod 14 has both ends that move through the support tube 12, so the activity stability of the movable rod 14 is guaranteed, and the disc spring is sleeved on the outer wall of the movable rod 14, so the stability of the disc spring can be guaranteed.

[0092] The movable frame 18 may shake during use, so the movable frame 18 and the movable rod 14 are not fixedly connected, but connected by a connecting cable 21 (flexible), which protects the movable rod 14. At the same time, the fixed frame 13 is rotatably connected to the support seat 2 through a support rod 22. As the position of the movable frame 18 changes, the angle of the force applied to the fixed frame 13 by the end of the transmission cable 20 also changes in real time, so that the fixed frame 13 can change its angle during use and prevent damage to the connection. At the same time, the length direction of the driving screw 10, the length direction of the rack body 27, the length direction of the support column 25, etc. are all parallel, so that the force transmission of each structure can be carried out more efficiently and reduce various losses.

[0093] Example 2

[0094] The difference from the first embodiment is that, Figure 7 and Figure 8 As shown, a clearance opening 31 is provided in the transmission seat 24 which vertically passes through the support column 25 and is located between the support column 25 and the fixing frame 13. The longitudinal section of the transmission column 26 matches the longitudinal sections of the support column 25 and the clearance opening 31. The end of the transmission cable 20 movably passes through the clearance opening 31 and is connected to the portion of the transmission column 26 located in the clearance opening 31.

[0095] At this time, the cross-section of the center of the transmission column 26 is in the shape of a sun or a theta, which can also well ensure that the angle of the transmission column 26 does not rotate; not only that, at this time, the end of the transmission cable 20 is connected to the part of the transmission column 26 located in the make way opening 31 after passing through the make way opening 31. At this time, the straight line where this part of the transmission cable 20 acting on the transmission column 26 is located is colinear with the straight line where the transmission column 26 is located, which can well improve the position and activity stability of the transmission column 26, and also has smaller activity loss.

[0096] Example 3

[0097] The difference from the first and second embodiments is that the longitudinal section of the support column 25 is rectangular, and the outer wall of the support column 25 is movably fitted to the transmission column 26; at this time, the support column 25 can prevent the transmission column 26 from rotating.

[0098] The present invention also discloses a carving system for aircraft seat cushions, such as Fig. 9 and Fig.10 As shown, including:

[0099] A support platform as described in any of the above embodiments;

[0100] A negative pressure plate 36 is connected to the top of the connecting seat 1. The negative pressure plate 36 is in a cavity shape, and a plurality of positioning holes are provided on the top of the negative pressure plate 36. The negative pressure plate 36 is also externally connected to a negative pressure tube (flexible) and a negative pressure pump, which are used to pump the negative pressure plate 36 into a negative pressure state. At the same time, the aircraft seat cushion (or other seat cushion) is a foam material, so it is light in weight and low in density. Even if the negative pressure adsorption of the negative pressure plate 36 is used, the stability of its position can be fully guaranteed.

[0101] A support frame 37, the support frame 37 is in a U-shape with an opening downward, and two support frames 37 are provided, and the two support frames 37 are distributed on both sides of the connecting seat 1X direction;

[0102] A first sliding sleeve 38, wherein the first sliding sleeve 38 is movably sleeved on the top of the support frame 37, and a first screw rod 39 and a first motor 40 for driving the first screw rod 39 are horizontally rotatably arranged on the support frame 37, wherein the first screw rod 39 passes through the first sliding sleeve 38 and is threadedly engaged with the first sliding sleeve 38;

[0103] A Y-axis frame 41, both ends of which are fixedly connected to the two first sliding sleeves 38, and the longitudinal section of the Y-axis frame 41 is rectangular;

[0104] A second sliding sleeve 42, the second sliding sleeve 42 is movably sleeved on the Y-axis frame 41, two Y-axis seats 43 are arranged at both ends of the top of the Y-axis frame 41, a second screw rod 44 is arranged horizontally and rotatably between the two Y-axis seats 43, and a second motor 45 for driving the second screw rod 44 is arranged on the top of the Y-axis frame 41;

[0105] A Z-axis frame 46, the Z-axis frame 46 is vertically connected to the side of the second sliding sleeve 42, the cross section of the Z-axis frame 46 is in the shape of an Ω, and a third screw rod 47 and a third motor 48 for driving the third screw rod 47 are vertically rotatably arranged on the Z-axis frame 46;

[0106] A buckle sliding member 49, wherein the buckle sliding member 49 is movably buckled to the Z-axis frame 46, and the third screw rod 47 passes through the buckle sliding member 49 and is threadedly engaged with the buckle sliding member 49;

[0107] The fourth motor 50 is vertically arranged on the side of the buckled sliding member 49 , and a milling cutter 51 is vertically arranged at the bottom of the output shaft of the fourth motor 50 , and the milling cutter 51 is located above the negative pressure plate 36 .

[0108] When carving (or imitating milling) the cushion, first place the cushion blank on the negative pressure plate 36, and then after the negative pressure pump is started, the negative pressure plate 36 stably adsorbs the cushion blank on the negative pressure plate 36 through multiple positioning holes, and the negative pressure plate 36 and the connecting seat 1 are fixedly connected (such as bolts, rivets, or welding), so that the connecting seat 1 can drive the cushion blank to move at multiple angles and multiple positions. At the same time, the first motor 40 and the first screw 39 can drive the first sliding sleeve 38 to reciprocate along the X direction, the second motor 45 and the second screw 44 can drive the second sliding sleeve 42 to reciprocate along the Y direction, and the third motor 48 and the third screw 47 can drive the buckle sliding member 49 to reciprocate in the Z direction (i.e., vertical direction), so that the fourth motor 50 (high-speed motor) and the milling cutter 51 can move in three directions of XYZ, and cooperate with the connecting seat 1 to drive the cushion blank to move, so that the top and side of the cushion blank can be milled. The milling cutter 51 mainly includes a rod portion in the middle and blade portions at the periphery and bottom. When the rod portion rotates at a high speed, the sharp blade portion can mill the cushion blank to obtain a desired shape.

[0109] It should also be understood that, in this embodiment, the aircraft seat cushion is used as the protection object, but the present application is not limited to the production of aircraft seat cushions in actual use, and can also be used in high-speed railways, trains, cars, ships or other places where it can be used according to actual conditions, so no further elaboration will be given here.

[0110] It should also be noted that all the "settings" and similar descriptive words in this application (especially the specification) express that there is or exists a connection relationship between two structures, but there is no excessive limitation on the specific means by which the two are connected, and it is usually a conventional connection means, that is, it should be understood that the means are prior art and there is no need for excessive elaboration. For example, "n is set on m" only expresses that there is n structure on m structure, and the two are specifically connected by welding, riveting, adhesive connection or integral molding, which are all within the protection scope of this application; for another example, "y is rotatably set on x" only expresses that y and x can rotate relative to each other, and whether the two are connected by bearing rotation, or y directly passes through x and is connected to x rotationally, or other feasible methods, are all within the protection scope of this application.

[0111] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A support platform, characterized in that: It comprises a connecting seat (1) and six driving units for supporting the connecting seat (1), wherein the six driving units are distributed in a circular shape below the connecting seat (1), and the driving units comprise: A support seat (2), wherein the top of the support seat (2) is an inclined support slope (3), and the inclination directions of two adjacent support slopes (3) are opposite; A driving block (4), the driving block (4) being movably located on the supporting inclined surface (3); A driving mechanism, the driving mechanism being used to drive the driving block (4) to move along the length direction of the driving inclined surface; A driving rod (5) and a linkage rod (6) rotatably connected to the top of the driving rod (5), the driving rod (5) and the linkage rod (6) are coaxial, the linkage rod (6) is inclined, and the inclination directions of two adjacent linkage rods (6) are opposite, and the inclination direction of the supporting inclined surface (3) is the same as the inclination direction of the corresponding linkage rod (6); A universal joint (7), the bottom of the driving rod (5) and the driving block (4) as well as the top of the linkage rod (6) and the connecting seat (1) are all connected via the universal joint (7).

2. A support platform according to claim 1, characterized in that: Two guide rails (8) are arranged in parallel on the top of the driving inclined surface, the bottom of the driving block (4) is movably engaged with the two guide rails (8), two driving seats (9) are arranged opposite to each other on the top of the supporting inclined surface (3), a driving screw (10) is rotatably arranged between the two driving seats (9), a driving motor (11) for driving the driving screw (10) is arranged on the driving inclined surface, and the driving screw (10) passes through the driving block (4) and is threadedly engaged with the driving block (4).

3. A supporting platform according to claim 2, characterized in that: The projections of all the driving screw rods (10) in the vertical direction are tangent to the same circle, and when the connecting seat (1) is in a horizontal state, the projections of all the linkage rods (6) in the vertical direction are tangent to another same circle.

4. A supporting platform according to claim 2, characterized in that: A support tube (12) and a fixed frame (13) are fixedly arranged on the side of the support seat (2); movable rods (14) are arranged at both ends of the support tube (12) so as to movably pass through the support tube (12); the outer wall of the movable rod (14) is in contact with the support tube (12); a movable portion (15) is arranged on the outer wall of the movable rod (14); the movable rod (14) is higher than the fixed frame (13); the straight line where the movable rod (14) is located intersects with the fixed frame (13); a fixed wheel (16) is rotatably arranged inside the fixed frame (13); Also included are: an elastic member (17) which is continuously in a compressed state, the elastic member (17) being located in the support tube (12), one end of the elastic member (17) being in contact with the movable portion (15), and the other end being in contact with the inner wall of the support tube (12), the elastic member (17) being located between the movable portion (15) and the fixing frame (13); The movable frame (18) is rotatably provided with a movable wheel (19) therein. The movable frame (18) is located between the fixed frame (13) and the support cylinder (12), and the movable frame (18) is fixedly connected to the bottom of the movable rod (14). The transmission cable (20), one end of the transmission cable (20) is connected to the fixed frame (13), the other end is used to apply an upward acting force to the driving block (4), and the middle part sequentially bypasses the fixed wheel (16) and the movable wheel (19).

5. A supporting platform according to claim 4, characterized in that: A connecting cable (21) is arranged between the movable frame (18) and the movable rod (14). A support rod (22) is arranged inside the fixed frame (13). The support rod (22) is horizontally rotatably connected to the support seat (2). Both the fixed frame (13) and the movable frame (18) are in the shape of a Chinese character 'Ri'. The fixed wheel (16) is rotatably connected to the middle of the fixed frame (13), and the movable wheel (19) is rotatably connected to the middle of the movable wheel (19).

6. A supporting platform according to claim 4, characterized in that: Limit grooves (23) for the transmission cable (20) to be snapped into are respectively formed in the middle parts of the outer sides of the fixed wheel (16) and the movable wheel (19). A plurality of the fixed wheels (16) and the movable wheels (19) are provided. The number of strands of the transmission cable (20) bypassing the movable frame (18) is greater than or equal to 4. Two transmission seats (24) are oppositely arranged on the side of the support seat (2). A support column (25) is arranged between the two transmission seats (24). A transmission column (26) is movably sleeved on the support column (25). The free end of the transmission cable (20) is connected to the transmission column (26). A strip-shaped rack body (27) is arranged on the side of the driving block (4). The straight line where the driving screw rod (10) is located, the straight line where the rack body (27) is located, the straight line where the transmission column (26) is located, the straight line where the support column (25) is located, the straight line where the movable rod (14) is located, and the straight line where the transmission cable (20) is located between the transmission column (26) and the fixed frame (13) are all parallel or collinear. A transmission gear (28) and a steering gear are rotatably arranged on the side of the support seat (2). The bottom of the transmission gear (28) is meshed with the top of the transmission column (26), the top is meshed with the bottom of the steering gear, and the top of the steering gear is meshed with the bottom of the rack body (27).

7. A supporting platform according to claim 6, characterized in that: Two rack bodies (27) are provided. The two rack bodies (27) are located on both sides of the driving block (4), and steering gears are arranged at the bottoms of both driving blocks (4). The steering gear comprises a coaxial first gear portion (29) and a second gear portion (30), the first gear portion (29) being fixedly connected to the second gear portion (30), and the diameter of the first gear portion (29) being larger than the diameter of the second gear portion (30), the top of the first gear portion (29) being meshed with the corresponding rack body (27), and the bottom of the second gear portion (30) being meshed with the transmission gear (28).

8. A supporting platform according to claim 7, characterized in that: The elastic member (17) includes a plurality of disc springs, the inner side of the disc springs is in contact with the movable rod (14), and the outer side has a set distance from the inner wall of the support tube (12), wherein: The longitudinal section of the support column (25) is rectangular, and the outer wall of the support column (25) is movably fitted to the transmission column (26); or: The longitudinal section of the support column (25) is circular, and the outer wall of the support column (25) is movably fitted to the transmission column (26), and the inner side of the transmission column (26) is movably fitted to the support seat (2); or: A clearance opening (31) is provided on the transmission seat (24) which vertically passes through the support column (25) and is located between the support column (25) and the fixing frame (13); the longitudinal section of the transmission column (26) matches the longitudinal sections of the support column (25) and the clearance opening (31); the end of the transmission cable (20) movably passes through the clearance opening (31) and is connected to the portion of the transmission column (26) located in the clearance opening (31).

9. An engraving system for an aircraft seat cushion, characterized in that: include: A support platform as claimed in any one of claims 1 to 9; A negative pressure plate (36), the negative pressure plate (36) being connected to the top of the connecting seat (1), the negative pressure plate (36) being in a cavity shape, and a plurality of positioning holes being provided on the top of the negative pressure plate (36); A support frame (37), the support frame (37) is in a U-shape with an opening facing downward, two support frames (37) are provided, and the two support frames (37) are distributed on both sides of the connecting seat (1) in the X direction; a first sliding sleeve (38), wherein the first sliding sleeve (38) is movably sleeved on the top of the support frame (37), and a first screw rod (39) and a first motor (40) for driving the first screw rod (39) are horizontally rotatably arranged on the support frame (37), and the first screw rod (39) passes through the first sliding sleeve (38) and is threadably matched with the first sliding sleeve (38); A Y-axis frame (41), wherein two ends of the Y-axis frame (41) are fixedly connected to the two first sliding sleeves (38), and the longitudinal section of the Y-axis frame (41) is rectangular; A second sliding sleeve (42), the second sliding sleeve (42) is movably sleeved on the Y-axis frame (41), two Y-axis seats (43) are arranged at both ends of the top of the Y-axis frame (41), a second screw rod (44) is arranged horizontally and rotatably between the two Y-axis seats (43), and a second motor (45) for driving the second screw rod (44) is arranged at the top of the Y-axis frame (41); A Z-axis frame (46), the Z-axis frame (46) being vertically connected to the side of the second sliding sleeve (42), the cross section of the Z-axis frame (46) being in the shape of an Ω, and a third screw rod (47) and a third motor (48) for driving the third screw rod (47) being vertically rotatably arranged on the Z-axis frame (46); A buckled sliding member (49), wherein the buckled sliding member (49) is movably buckled to the Z-axis frame (46), and the third screw rod (47) passes through the buckled sliding member (49) and is threadably engaged with the buckled sliding member (49); A fourth motor (50), wherein the fourth motor (50) is vertically arranged on the side of the buckled sliding member (49), and a milling cutter (51) is vertically arranged at the bottom of the output shaft of the fourth motor (50), and the milling cutter (51) is located above the negative pressure plate (36).

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