Multi-station spraying fixing tool for fuel oil nozzle

Abstract

The present application relates to fuel nozzle processing technical field, disclose a kind of multi-station spraying fixed tool of fuel nozzle, comprising: rotary table, positioning mechanism, first transfer mechanism, second transfer mechanism, lower shielding mechanism and upper shielding mechanism, rotary table can rotate along its circumferential direction, positioning mechanism is equipped with multiple, and evenly distributed in rotary table, positioning mechanism is used to position multiple fuel nozzles, first transfer mechanism is used to transfer multiple fuel nozzles to be sprayed to one positioning mechanism, second transfer mechanism is used to transfer multiple fuel nozzles from one positioning mechanism to placement area after spraying, lower shielding mechanism is connected with positioning mechanism, lower shielding mechanism is used to shield the lower part of multiple fuel nozzles, and upper shielding mechanism is used to shield the upper part of multiple fuel nozzles.The present application can realize the fixation and spraying processing of multiple fuel nozzles simultaneously, improve production efficiency, suitable for mass production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel nozzle processing, and particularly relates to a multi-station spraying fixing tool for fuel nozzle. BACKGROUND

[0002] As a core functional component of an aero-engine combustion chamber, the fuel nozzle has the characteristics of thin wall and small diameter, and has a complex shape and high requirements for surface performance.

[0003] The existing spraying fixing tool is usually designed as a single station. When the outer wall of the fuel nozzle needs to be sprayed, the fuel nozzle is usually placed on a base, an outer cover is then installed on the base to shield the lower part of the fuel nozzle, a top cover is then installed on the fuel nozzle, the top cover is connected to the nozzle port of the fuel nozzle through a pin, the upper part of the fuel nozzle is shielded by the top cover, the spraying area is the annular groove area of the fuel nozzle between the outer cover and the top cover, the base is then sent to a spraying area, the annular groove area of the fuel nozzle is sprayed by a spraying device, after spraying is completed, the base is taken out, the top cover and the outer cover are then taken off in turn, and the sprayed fuel nozzle is then taken off.

[0004] However, the spraying fixing tool described above can only fix and spray one fuel nozzle at a time, the production efficiency is low, and the demand for batch production cannot be met. SUMMARY

[0005] The present application discloses a multi-station spraying fixing tool for fuel nozzle to solve the problem that the existing spraying fixing tool can only fix and spray one fuel nozzle at a time, the production efficiency is low, and the demand for batch production cannot be met.

[0006] In order to solve the above problems, the present application adopts the following technical solutions:

[0007] A multi-station spraying fixing tool for fuel nozzle, comprising:

[0008] A turntable, the turntable can rotate along its own circumference;

[0009] A plurality of positioning mechanisms, which are uniformly distributed on the turntable, are provided, and the positioning mechanisms are used for positioning a plurality of fuel nozzles;

[0010] A first transfer mechanism, which can be provided corresponding to the positioning mechanisms, is used for transferring a plurality of fuel nozzles to be sprayed to one of the positioning mechanisms;

[0011] A second transfer mechanism, which can be provided corresponding to the positioning mechanisms, is used for transferring a plurality of sprayed fuel nozzles from one of the positioning mechanisms to a placement area;

[0012] A lower shielding mechanism, the lower shielding mechanism is connected with the positioning mechanism, and the lower shielding mechanism is used for shielding the lower part of the plurality of fuel nozzles;

[0013] An upper shielding mechanism, the upper shielding mechanism can be arranged corresponding to the positioning mechanism, and the upper shielding mechanism is located in the spraying area, and the upper shielding mechanism is used for shielding the upper part of the plurality of fuel nozzles;

[0014] Wherein, through the rotation of the rotating table, the positioning mechanism sequentially passes through the first transfer mechanism, the upper shielding mechanism and the second transfer mechanism.

[0015] The technical scheme adopted by the present application can achieve the following beneficial effects:

[0016] The present application simultaneously transfers a plurality of fuel nozzles to be sprayed to one of the positioning mechanisms through the first transfer mechanism, in the process of rotating the rotating table, the lower part of the plurality of fuel nozzles is shielded by the lower shielding mechanism, then the positioning mechanism enters the spraying area, the upper part of the plurality of fuel nozzles is shielded by the upper shielding mechanism, then the annular groove area of the fuel nozzle between the upper part and the lower part is sprayed by the spraying device, after the spraying is completed, the upper shielding mechanism cancels the shielding of the upper part, the rotating table continues to rotate, when the positioning mechanism corresponds to the second transfer mechanism, the lower shielding mechanism cancels the shielding of the lower part, the plurality of fuel nozzles after spraying are transferred from the positioning mechanism to the placement area by the second transfer mechanism, and the spraying process of the fuel nozzle is completed; the present application can realize the simultaneous fixing and spraying processing of a plurality of fuel nozzles, improve the production efficiency, is suitable for batch production, and can realize the continuous production of a plurality of fuel nozzles, reduce the labor intensity, and realize the efficient, accurate and stable spraying production. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0018] Figure 1 is the overall front view structure schematic diagram disclosed by some embodiments of the present application;

[0019] Figure 2 is Figure 1 is the enlarged structure schematic diagram of A in the figure;

[0020] Figure 3 is Figure 1 is the enlarged structure schematic diagram of B in the figure;

[0021] Figure 4is a top view structural schematic diagram of the whole disclosed by some embodiments of the present application;

[0022] Figure 5 is Figure 4 is an enlarged structural schematic diagram at C in FIG. 1;

[0023] Figure 6 is Figure 4 is an enlarged structural schematic diagram at D in FIG. 1;

[0024] Figure 7 is a front view structural schematic diagram of the lower shielding mechanism disclosed by some embodiments of the present application;

[0025] Figure 8 is a front view structural schematic diagram of the positioning mechanism in the feeding process disclosed by some embodiments of the present application;

[0026] Figure 9 is a left view structural schematic diagram of the first transfer mechanism disclosed by some embodiments of the present application;

[0027] Figure 10 is a left view structural schematic diagram of the clamping assembly disclosed by some embodiments of the present application;

[0028] Figure 11 is a right view structural schematic diagram of the upper shielding mechanism disclosed by some embodiments of the present application;

[0029] Figure 12 is Figure 11 is an enlarged structural schematic diagram at E in FIG. 1;

[0030] Figure 13 is a structural schematic diagram of the fuel nozzle disclosed by some embodiments of the present application.

[0031] in the figure:

[0032] 100 - turntable;

[0033] 200 - positioning mechanism; 210 - fixed frame; 220 - driving piece; 230 - positioning mandrel; 231 - support rod; 232 - placement table; 233 - inner core; 240 - limiting block; 250 - mounting plate;

[0034] 300 - first transfer mechanism; 310 - rotating piece; 320 - first support; 330 - first lifting assembly; 331 - first telescopic piece; 332 - mounting frame; 333 - first guide rod; 340 - clamping assembly; 341 - second telescopic piece; 342 - guide part; 3421 - connecting plate; 3422 - moving groove; 3423 - third guide rod; 343 - clamping part; 3431 - moving plate; 3432 - clamping plate; 3433 - first mounting rod; 344 - first connecting rod; 345 - first fixed plate; 350 - support plate;

[0035] 400 - second transfer mechanism;

[0036] 500 - lower shielding mechanism; 510 - mounting ring; 520 - lower shielding piece; 530 - second lifting assembly; 531 - third telescopic piece; 532 - moving ring; 540 - second connecting rod; 550 - first soft pad; 560 - fixed rod;

[0037] 600 - upper shielding mechanism; 610 - second support; 620 - third lifting assembly; 621 - fourth telescopic piece; 622 - second fixed plate; 623 - second guide rod; 630 - top cover; 640 - second soft pad; 650 - second mounting rod;

[0038] 10 - fuel nozzle; 11 - annular groove; 12 - notch; 20 - base; 30 - support platform. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0040] The terms "first", "second", "third", "fourth" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", "third", "fourth" and the like are generally a class, and are not limited to the number of objects, for example, the first object can be one or more.

[0041] The inventive concept of the present application is described as follows:

[0042] The existing spraying fixing tool is designed as a single station, however, the existing spraying fixing tool can only fix and spray one fuel nozzle at a time, the production efficiency is low, and the batch production demand cannot be met, and the work of fixing and taking down the fuel nozzle is manually processed. Since the fuel nozzle is small, the outer cover and the top cover may cause damage to the surface of the fuel nozzle during installation and disassembly, thereby affecting the quality of the fuel nozzle, and the manual labor intensity is large, and the disassembly and assembly are relatively cumbersome.

[0043] Based on this, the inventor provides a multi-station spraying fixing tool for fuel oil nozzles, which can simultaneously fix and spray a plurality of fuel oil nozzles, improves production efficiency, is suitable for batch production, reduces labor intensity, realizes continuous production of the plurality of fuel oil nozzles, does not need manual disassembly, avoids damage to the fuel oil nozzles during disassembly, improves the quality of the fuel oil nozzles, and realizes efficient, accurate and stable spraying production.

[0044] The multi-station spraying fixing tool for fuel oil nozzles provided by the present application will be described in detail below in combination with the accompanying drawings and specific embodiments and application scenarios thereof. Figures 1 to 13 The multi-station spraying fixing tool for fuel oil nozzles provided by the present application will be described in detail below in combination with the accompanying drawings and specific embodiments and application scenarios thereof.

[0045] Referring to Figure 1 A multi-station spraying fixing tool for fuel oil nozzles, comprising: a rotary table 100, a positioning mechanism 200, a first transfer mechanism 300, a second transfer mechanism 400, a lower shielding mechanism 500 and an upper shielding mechanism 600.

[0046] Specifically, referring to Figure 13 The fuel oil nozzle 10 is internally hollow and has a ring-shaped bottom edge, a cylindrical structure is arranged on the ring-shaped bottom edge, a hemispherical structure is arranged on the top of the cylindrical structure, a nozzle opening is arranged on the hemispherical structure, a ring groove 11 is arranged on the upper part of the cylindrical structure, the spraying area is the area of the ring groove 11, and a notch 12 is arranged on the ring-shaped bottom edge.

[0047] Referring to Figure 1 and Figure 4 The multi-station spraying fixing tool further comprises a base 20, the top of the base 20 is provided with a support platform 30, the top of the support platform 30 is rotatably provided with the rotary table 100, the inside of the base 20 is provided with a motor, the output shaft of the motor penetrates the support platform 30 and is connected to the center of the bottom of the rotary table 100, so that the motor drives the rotary table 100 to rotate; the base 20 provides a certain height for the positioning mechanism 200, facilitating spraying; the output shaft of the motor is rotatably connected to the support platform 30; the first transfer mechanism 300, the second transfer mechanism 400 and the upper shielding mechanism 600 are connected to the support platform 30, and the upper shielding mechanism 600 is located in the spraying area, that is, a part of the rotary table 100 and the support platform 30 is located in the spraying area, and the part is separated from the remaining part by a partition plate; when the rotary table 100 needs to be rotated after the spraying of the fuel oil nozzle 10 on the positioning mechanism 200 in the spraying area is completed, the partition plate is first moved upward, and then the rotary table 100 is rotated; when the next positioning mechanism 200 enters the specified position in the spraying area, the partition plate is lowered to be closed, so as to avoid the paint from the spraying device from splashing everywhere and polluting the environment.

[0048] The rotary table 100 can rotate along the circumference thereof;

[0049] Referring to Figure 1 and Figure 4 , the positioning mechanism 200 is provided in plurality and uniformly distributed on the rotary table 100, and is used for positioning the plurality of fuel nozzles 10;

[0050] Specifically, the positioning mechanism 200 is provided with a plurality of stations, each station can place one fuel nozzle 10, and the number of stations can be set according to actual conditions. In the embodiment, the number of stations is 10. The number of positioning mechanisms 200 is 3-6, one corresponds to the feeding area, one corresponds to the spraying area, and one corresponds to the discharging area. Therefore, at least 3 positioning mechanisms 200 are required, and in the embodiment, the number of positioning mechanisms 200 is 4. The extra positioning mechanism 200 can be used to adjust the position of the fuel nozzle 10 on the positioning mechanism 200, so as to avoid that the fuel nozzle 10 is not completely positioned, which affects the subsequent spraying effect.

[0051] Referring to Figure 1 and Figure 4 , the first transfer mechanism 300 can be provided corresponding to the positioning mechanism 200, and the first transfer mechanism 300 is used for transferring a plurality of fuel nozzles 10 to be sprayed to one of the positioning mechanisms 200;

[0052] Specifically, the first transfer mechanism 300 is located in the feeding area, and the first transfer mechanism 300 simultaneously transfers a group of fuel nozzles 10 to be sprayed placed in the feeding placement area (which can be a standby rack) to the corresponding positioning mechanism 200, thereby reducing labor cost.

[0053] Referring to Figure 1 and Figure 4 , the second transfer mechanism 400 can be provided corresponding to the positioning mechanism 200, and the second transfer mechanism 400 is used for transferring a plurality of fuel nozzles 10 sprayed from one of the positioning mechanisms 200 to the placement area;

[0054] Specifically, the second transfer mechanism 400 is located in the discharging area, and the second transfer mechanism 400 transfers a group of fuel nozzles 10 sprayed from the corresponding positioning mechanism 200 to the placement area, thereby reducing labor cost.

[0055] Referring to Figure 1 and Figure 4 , the lower shielding mechanism 500 is connected with the positioning mechanism 200, and the lower shielding mechanism 500 is used for shielding the lower part of the plurality of fuel nozzles 10;

[0056] Specifically, after the lower shielding mechanism 500 shields, the position of the fuel nozzle 10 can be adjusted by the positioning mechanism 200, so that the positioning mechanism 200 completely positions the fuel nozzle 10, and facilitates subsequent spraying.

[0057] With reference to Figure 1 And Figure 4 The upper shielding mechanism 600 can be arranged corresponding to the positioning mechanism 200, and the upper shielding mechanism 600 is located in the spraying area, and the upper shielding mechanism 600 is used for shielding the upper part of the plurality of fuel nozzles 10.

[0058] Specifically, the spraying device is located in the spraying area, and the spraying device can spray the annular groove 11 area of a group of fuel nozzles 10 at the same time, because the lower shielding mechanism 500 and the upper shielding mechanism 600 accurately define the spraying area, waste of spraying paint is avoided, and the spraying area is provided with a negative pressure exhaust system, which can improve the workshop environment.

[0059] Wherein, through the rotation of the rotary table 100, the positioning mechanism 200 passes through the first transfer mechanism 300, the upper shielding mechanism 600 and the second transfer mechanism 400 in turn.

[0060] Specifically, through the continuous rotation of the rotary table 100, the loading-adjusting-spraying-discharging process can be realized at the same time by rotating 90° each time, and a plurality of fuel nozzles 10 can be sprayed at one time, which improves the production efficiency, and the whole process does not need manual intervention, which reduces the labor intensity, and this continuous mode not only improves the yield, but also reduces the equipment damage caused by frequent start and stop, and the whole process automation reduces the manual contact, avoids the mechanical damage of the fuel nozzle 10 caused by disassembly and transportation in the traditional process, and improves the quality of the fuel nozzle.

[0061] With reference to Figure 8 In this embodiment, the positioning mechanism 200 includes a fixed frame 210, a driving piece 220, a positioning mandrel 230 and a limiting block 240.

[0062] The fixed frame 210 is connected with the rotary table 100, a plurality of driving pieces 220 are connected on the fixed frame 210, the output end of the driving piece 220 is connected with the positioning mandrel 230, and the limiting block 240 for limiting the fuel nozzle 10 is arranged on the positioning mandrel 230.

[0063] Specifically, with reference to Figure 8 And Figure 11The overall support is achieved by the fixing frame 210, which is a square frame composed of a cross beam, a longitudinal beam and a column. Angle irons are arranged at the connection positions between the cross beam and the longitudinal beam and between the cross beam and the column, so as to improve the overall strength. The angle irons are connected with the cross beam, the longitudinal beam and the column by bolts and other fasteners. The cross beam, the longitudinal beam, the column and the angle irons can be made of aluminum alloy profiles. The fixing frame 210 is hollow. The fixing frame 210 can be connected with the rotary table 100 by the angle irons and the bolts. The fixing frame 210 is provided with a mounting plate 250 at the top. A plurality of driving members 220 are mounted on the bottom of the mounting plate 250 along the length direction of the cross beam. The driving members 220 are located inside the fixing frame 210 and are vertically arranged. The driving members 220 are preferably waterproof reduction motors. The specific structure and working principle of the driving members 220 are well known and will not be described here. In this embodiment, the number of the driving members 220 is 10. The driving members 220 are provided with protective covers (not shown in the figure) outside. The protective covers (not shown in the figure) are connected with the bottom of the mounting plate 250. The driving members 220 are protected by the protective covers (not shown in the figure), so as to avoid the influence of the paint on the driving members 220. The output ends of the driving members 220 penetrate through the mounting plate 250 and are connected with positioning mandrels 230. The positioning mandrels 230 are rotatably mounted on the mounting plate 250. The output ends of the driving members 220 are rotatably connected with the mounting plate 250. Similarly, 10 positioning mandrels 230 are arranged on one positioning mechanism 200.

[0064] The positioning mandrel 230 is used for preliminarily positioning the fuel nozzle 10.

[0065] Specifically, referring to Figure 8 and Figure 13 , the positioning mandrel 230 comprises a support rod 231, a placement table 232 and an inner core 233. The support rod 231 is rotatably connected with the mounting plate 250 and is connected with the output end of the driving member 220. The support rod 231 is vertically arranged. The support rod 231 is connected with the placement table 232. The placement table 232 is in a cylindrical shape. The top of the placement table 232 can be in contact with the annular bottom edge of the fuel nozzle 10. The top of the placement table 232 is connected with the inner core 233. The shape of the inner core 233 matches the shape of the hollow inside of the fuel nozzle 10, so as to facilitate the positioning of the fuel nozzle 10 by the inner core 233. One side of the placement table 232 is provided with a limiting block 240 connected with the inner core 233. The limiting block 240 can match the notch 12 of the fuel nozzle 10 and limit the fuel nozzle 10. The fuel nozzle 10 is preliminarily positioned by the positioning mandrel 230. The limiting block 240 corresponds to the notch 12, so as to further position the fuel nozzle 10. The materials of the positioning mandrel 230 and the limiting block 240 can be stainless steel 304. The surfaces of the positioning mandrel 230 and the limiting block 240 are treated by nitriding or coated with polytetrafluoroethylene, so as to reduce the friction coefficient with the fuel nozzle 10 and avoid damage to the fuel nozzle 10 during positioning.

[0066] When the driving member 220 drives the positioning mandrel 230 to rotate, the positioning mandrel 230 drives the limiting block 240 to rotate synchronously, and the limiting block 240 drives the fuel nozzle 10 to rotate synchronously, so that the annular groove 11 area of the fuel nozzle 10 is uniformly sprayed during spraying, and good spraying effect and spraying quality are achieved.

[0067] With reference to Figure 1 , Figure 4 , Figure 9 and Figure 10 , in the embodiment, the first transfer mechanism 300 and the second transfer mechanism 400 are the same in structure, and each includes a rotating member 310, a first support 320, a first lifting assembly 330, and a clamping assembly 340.

[0068] The rotating end of the rotating member 310 is connected with the first support 320, the first support 320 is provided with the first lifting assembly 330, and the first lifting assembly 330 is provided with a plurality of clamping assemblies 340.

[0069] Specifically, with reference to Figure 1 , Figure 4 and Figure 9 , the rotating member 310 is connected with the support platform 30, and the rotating member 310 is horizontally arranged. The rotating member 310 is preferably a rotary air cylinder, and its specific structure and working principle are well known, so they are not described in detail here. The rotating end of the rotating member 310 is connected with a support plate 350, the top of the support plate 350 is provided with the first support 320, the first support 320 is arranged in an L shape and includes a horizontal part and a vertical part. The vertical part of the first support 320 is connected with the top of the support plate 350, the horizontal part of the first support 320 is longer than the vertical part of the first support 320 along the length direction of the fixing frame 210, and the horizontal part of the first support 320 is located above the positioning mandrel 230. The first lifting assembly 330 is connected with the horizontal part of the first support 320. The number of clamping assemblies 340 is the same as the number of positioning mandrels 230 of one positioning mechanism 200, that is, the number of clamping assemblies 340 is ten.

[0070] The rotating member 310 is used to realize the transfer of the fuel nozzle 10.

[0071] The first lifting assembly 330 is used to drive the plurality of clamping assemblies 340 to lift.

[0072] The clamping assembly 340 is used to clamp the fuel nozzle 10.

[0073] Specifically, the plurality of clamping assemblies 340 are lowered synchronously by the first lifting assembly 330, the fuel nozzles 10 are clamped by the clamping assemblies 340, then the plurality of clamping assemblies 340 are raised synchronously by the first lifting assembly 330, the support plate 350 is rotated by the rotating piece 310, so that the first lifting assembly 330 and the clamping assemblies 340 are rotated, and stop rotating after rotating to a specified position, the plurality of clamping assemblies 340 are lowered synchronously by the first lifting assembly 330, the fuel nozzles 10 are released by the clamping assemblies 340, then the plurality of clamping assemblies 340 are raised synchronously by the first lifting assembly 330, and the rotating piece 310 returns to the initial position, so that the plurality of fuel nozzles 10 are transferred, and the production efficiency is improved; when the turntable 100 rotates to a specified process, the transfer mechanism (i.e. the first transfer mechanism 300 and the second transfer mechanism 400) can quickly complete the consecutive actions of lowering, clamping, raising, rotating, lowering, placing, raising and rotating, and the material transfer can be realized without manual intervention, so that the smoothness of continuous production is ensured.

[0074] With reference to Figure 9 In the embodiment, the first lifting assembly 330 comprises a first telescopic piece 331 and a mounting frame 332.

[0075] The first telescopic piece 331 is connected with the first support 320, the telescopic end of the first telescopic piece 331 is connected with the mounting frame 332, and the mounting frame 332 is provided with a plurality of clamping assemblies 340.

[0076] Specifically, the first telescopic piece 331 is vertically arranged, the first telescopic piece 331 is mounted on the top of the horizontal part of the first support 320, and the first telescopic piece 331 is preferably a telescopic cylinder, and the specific structure and working principle thereof are well known, so that detailed description is not given herein. In the embodiment, the number of the first telescopic pieces 331 is two, the telescopic end of the first telescopic piece 331 penetrates through the horizontal part of the first support 320 and is connected with the top of the mounting frame 332, and the telescopic end of the first telescopic piece 331 is slidingly connected with the horizontal part of the first support 320. The mounting frame 332 is located below the horizontal part of the first support 320, and the mounting frame 332 is arranged in an inverted U shape.

[0077] With reference to Figure 9 The top of the mounting frame 332 is provided with first guide rods 333 arranged vertically on both sides, and the first guide rods 333 penetrate through the horizontal part of the first support 320. By arranging the first guide rods 333, the stability of the mounting frame 332 in moving up and down is improved.

[0078] The first telescopic piece 331 is used for driving the mounting frame 332 to lift, so that the plurality of clamping assemblies 340 are lifted synchronously, and the consistency of the transfer of the plurality of fuel nozzles 10 is ensured, so that the efficiency requirement of batch production is realized.

[0079] Referring to Figure 9 and Figure 10 In the embodiment, the clamping assembly 340 comprises a second telescopic piece 341, a guide part 342, a clamping part 343 and a first connecting rod 344;

[0080] The second telescopic piece 341 is connected to the inside of the mounting frame 332, the guide part 342 is arranged at the lower part inside the mounting frame 332, the clamping part 343 is arranged on the guide part 342 in a sliding manner, one end of the first connecting rod 344 is rotatably connected to the telescopic end of the second telescopic piece 341, and the other end of the first connecting rod 344 is rotatably connected to the clamping part 343.

[0081] Specifically, referring to Figure 9 and Figure 10 The second telescopic piece 341 is connected to the top inside of the mounting frame 332, the second telescopic piece 341 is arranged vertically, and the second telescopic piece 341 is preferably a micro pneumatic cylinder. The specific structure and working principle of the second telescopic piece 341 are well known, and thus will not be described in detail here. In the embodiment, the number of the second telescopic piece 341 is the same as the number of the positioning mandrel 230 of the positioning mechanism 200, that is, the number of the second telescopic piece 341 of the first transfer mechanism 300 or the second transfer mechanism 400 is 10.

[0082] Referring to Figure 9 and Figure 10 The second telescopic piece 341 is located above the guide part 342, the telescopic end of the second telescopic piece 341 is arranged downward, the first fixed plate 345 is connected to the telescopic end of the second telescopic piece 341, and the first connecting rod 344 is rotatably connected to the two sides of the first fixed plate 345, that is, one second telescopic piece 341 corresponds to two first connecting rods 344. Similarly, one second telescopic piece 341 corresponds to two clamping parts 343. In the embodiment, the number of the clamping part 343 of the first transfer mechanism 300 or the second transfer mechanism 400 is 20. Further, the two sides of the first fixed plate 345 are hingedly connected to one end of the first connecting rod 344, and the other end of the first connecting rod 344 is hingedly connected to the clamping part 343.

[0083] The guide part 342 is used for guiding the movement of the clamping part 343;

[0084] Specifically, the guide part 342 is used for horizontally guiding the movement of the clamping part 343, and improves the stability of the movement of the clamping part 343, so as to ensure that the clamping part 343 can accurately clamp the fuel nozzle 10. The clamping position is the position below the annular groove 11 of the fuel nozzle 10 or the position above the annular groove 11.

[0085] The clamping part 343 is used for clamping the fuel nozzle 10;

[0086] Specifically, two clamping parts 343 clamp one fuel nozzle 10.

[0087] The first connecting rod 344 drives the clamping part 343 to move on the guide part 342 by lifting the second telescopic part 341.

[0088] Specifically, the first fixed plate 345 is driven to lift by lifting the second telescopic part 341, and the first connecting rod 344 is pulled to move synchronously, and the two clamping parts 343 are driven to move on the guide part 342 by the first connecting rod 344, thereby achieving clamping and releasing of the fuel nozzle 10.

[0089] The second telescopic part 341 converts linear motion into horizontal opening and closing action of the clamping part 343 through the first connecting rod 344, and power transmission is direct and uniform, which can provide stable clamping force for the clamping part 343, prevent the fuel nozzle 10 from falling off during transfer, and avoid damage to the fuel nozzle 10 caused by excessive clamping force; and the actions of the multiple clamping assemblies 340 can be controlled synchronously, ensuring that all fuel nozzles 10 are clamped and released at the same time during single transfer, thereby ensuring the consistency of the multiple fuel nozzles 10 during transfer.

[0090] Referring to Figure 9 and Figure 10 In the embodiment, the guide part 342 includes a connecting plate 3421, a moving groove 3422, and a third guide rod 3423.

[0091] The connecting plate 3421 is connected to the lower part in the mounting frame 332, and a plurality of moving grooves 3422 are formed on the connecting plate 3421, and the third guide rod 3423 is installed in the moving groove 3422, and the clamping part 343 is slidably arranged on the third guide rod 3423.

[0092] Specifically, referring to Figure 9 and Figure 10Two ends of the connecting plate 3421 are connected with two sides of the lower part of the mounting frame 332 respectively, the connecting plate 3421 is horizontally arranged, the connecting plate 3421 is located below the second telescopic part 341, the material of the connecting plate 3421 can use aluminum alloy profile, which has sufficient rigidity and can stably bear the clamping part 343, resist impact and vibration that can occur during transportation, and prevent deformation of the guide structure; a plurality of moving grooves 3422 that penetrate through the top and bottom of the connecting plate 3421 are arranged on the connecting plate 3421, the number of the moving grooves 3422 corresponds to the number of the clamping parts 343, in this embodiment, the number of the moving grooves 3422 is 20; a third guide rod 3423 that is horizontally arranged is installed in the moving groove 3422, the length direction of the third guide rod 3423 is consistent with the length direction of the connecting plate 3421; the third guide rod 3423 is slidably connected with the clamping part 343, through the arrangement of the third guide rod 3423 and the moving groove 3422, high-precision, stable and compact movement constraint is provided for the clamping part 343, the clamping synchronization and consistency of the plurality of clamping parts 343 are ensured, and the clamping part 343 is strictly limited to move only along the axial direction of the third guide rod 3423, so that horizontal shaking or twisting is avoided.

[0093] Referring to Figure 10 In this embodiment, the clamping part 343 includes a moving plate 3431 and a clamping plate 3432.

[0094] The moving plate 3431 penetrates through the moving groove 3422, and the moving plate 3431 is slidably connected with the third guide rod 3423, one end of the moving plate 3431 is rotatably connected with the first connecting rod 344, and the other end of the moving plate 3431 is connected with the clamping plate 3432.

[0095] Specifically, referring to Figure 9 and Figure 10 , every two clamping parts 343 are oppositely arranged, and every two clamping parts 343 clamp one fuel nozzle 10; the moving plate 3431 is vertically arranged, two ends of the moving plate 3431 extend out of the moving groove 3422, the third guide rod 3423 penetrates through the moving plate 3431, and the top of the moving plate 3431 is hingedly connected with the first connecting rod 344; the bottom of the moving plate 3431 is provided with a first mounting rod 3433 that is horizontally arranged, one end of the first mounting rod 3433 away from the moving plate 3431 is connected with the clamping plate 3432, the clamping plate 3432 is arranged in a semicircular or arc shape, the clamping plate 3432 can be an elastic plate, and rubber pads (not shown in the figure) are arranged on opposite sides of the two clamping plates 3432, so that the clamping stability is further improved, and hard contact can also prevent scratches and pressure marks on the surface of the fuel nozzle 10.

[0096] Referring to Figure 2 , Figure 3 , Figures 5 to 7In the embodiment, the lower shielding mechanism 500 comprises a mounting ring 510, a lower shielding piece 520, a second lifting assembly 530, and a second connecting rod 540;

[0097] The mounting ring 510 is sleeved outside the positioning mandrel 230, the lower shielding piece 520 is rotationally connected to the mounting ring 510, the second lifting assembly 530 is arranged below the mounting ring 510 on the fixed frame 210, one end of the second connecting rod 540 is rotationally connected to the extension end of the second lifting assembly 530, and the other end of the second connecting rod 540 is rotationally connected to the lower shielding piece 520;

[0098] Specifically, referring to Figures 5 to 8 , the mounting ring 510 is annularly arranged and sleeved outside the placement table 232 of the positioning mandrel 230; a plurality of lower shielding pieces 520 are uniformly arranged on the circumferential side of the mounting ring 510, the plurality of lower shielding pieces 520 are folded to form a hollow cylinder, i.e., the lower shielding pieces 520 are arranged in an arc shape, the lower shielding pieces 520 shield the lower part of the fuel nozzle 10, and the inner diameter of the cylinder is slightly larger than the diameter of the placement table 232; when the plurality of lower shielding pieces 520 are opened, the transfer mechanism (i.e., the first transfer mechanism 300 and the second transfer mechanism 400) can conveniently place or clamp the fuel nozzle 10; the second lifting assembly 530 is connected to the mounting plate 250; the extension end of the second lifting assembly 530 is hingedly connected to one end of the second connecting rod 540, and the other end of the second connecting rod 540 is connected to the outer diameter surface of the lower shielding piece 520; in the embodiment, when the plurality of lower shielding pieces 520 are folded, the top surface of the lower shielding piece 520 is flush with the bottom of the annular groove 11 of the fuel nozzle 10; the number of the lower shielding pieces 520 is 2-6, and in the embodiment, the number of the lower shielding pieces 520 is 4.

[0099] Referring to Figure 2 , Figure 3 and Figure 7The second lifting assembly 530 comprises third telescopic pieces 531 and a moving ring 532. The third telescopic pieces 531 are vertically arranged, and the telescopic ends of the third telescopic pieces 531 are upwardly arranged. The number of the third telescopic pieces 531 is 2-8. In the embodiment, the number of the third telescopic pieces 531 is 2, and the third telescopic pieces 531 are located on both sides of the positioning mandrel 230. The third telescopic pieces 531 are connected with the mounting plate 250. The telescopic ends of the plurality of third telescopic pieces 531 are jointly connected with the moving ring 532. The mounting ring 510 is located above the moving ring 532. The moving ring 532 is annularly arranged and is sleeved outside the supporting rod 231 of the positioning mandrel 230. The third telescopic piece 531 is preferably a micro-cylinder. The specific structure and working principle of the third telescopic piece 531 are public common knowledge, and thus are not described in detail herein. The top of the moving ring 532 is circumferentially rotationally connected with a plurality of second connecting rods 540. The number of the second connecting rods 540 is consistent with the number of the lower shielding pieces 520. In the embodiment, the number of the second connecting rods 540 is 4. In the embodiment, a protective cover (not shown in the figure) is arranged outside the third telescopic piece 531. The telescopic end of the third telescopic piece 531 penetrates through the top of the protective cover (not shown in the figure). The telescopic end of the third telescopic piece 531 is slidingly connected with the protective cover (not shown in the figure). The third telescopic piece 531 is protected by the protective cover (not shown in the figure), so as to avoid the influence of the coating on the third telescopic piece 531.

[0100] Further, with reference to Figure 2 , Figure 3 and Figure 7 , the mounting ring 510 is provided with fixed rods 560 on both sides of the bottom. The fixed rods 560 are vertically arranged. The number of the fixed rods 560 is 2-8. In the embodiment, the number of the fixed rods 560 is 2. The fixed rods 560 penetrate through the moving ring 532 and are connected with the top of the mounting plate 250. The fixed rods 560 are slidingly connected with the moving ring 532. The mounting ring 510 has a fixed height. The mounting ring 510 is supported by the fixed rods 560, and the stability of the upward and downward movement of the moving ring 532 is improved, and thus the stability of the rotation of the lower shielding piece 520 is improved.

[0101] The second lifting assembly 530 is lifted to drive the second connecting rod 540 to rotate the lower shielding piece 520, so as to shield the lower part of the fuel nozzle 10.

[0102] Specifically, the third telescopic piece 531 is lifted to drive the moving ring 532 to synchronously lift, so as to drive the second connecting rod 540 to move. The second connecting rod 540 drives the lower shielding piece 520 to fold or open. When the lower shielding piece 520 is folded, the lower part of the fuel nozzle 10 is shielded, which provides a key guarantee for the spraying quality and production efficiency. When the lower shielding piece 520 is opened, the fuel nozzle 10 is conveniently placed or gripped by the transfer mechanism (i.e., the first transfer mechanism 300 and the second transfer mechanism 400).

[0103] Referring to Figure 2 , Figures 5 to 7 In the embodiment, the lower shielding piece 520 is provided with a first soft pad 550 capable of contacting the surface of the fuel nozzle 10;

[0104] When the fuel nozzle 10 is not accurately aligned with the limiting block 240, the positioning mandrel 230 is driven to rotate by the driving piece 220, and the fuel nozzle 10 is prevented from rotating synchronously by the first soft pad 550. When the fuel nozzle 10 is aligned with the limiting block 240, the fuel nozzle 10 falls by gravity and is limited by the limiting block 240, so that the positioning mandrel 230 further positions the fuel nozzle 10.

[0105] Specifically, referring to Figure 2 , Figures 5 to 8 When the plurality of lower shielding pieces 520 are folded, the plurality of first soft pads 550 are in contact with the surface of the fuel nozzle 10, the plurality of first soft pads 550 form a hollow cylinder, that is, the first soft pad 550 is arranged in an arc shape, the space between the fuel nozzle 10 and the lower shielding piece 520 is shielded, and the inner diameter of the cylinder is consistent with the outer diameter of the fuel nozzle 10. By arranging the first soft pad 550, the paint is prevented from entering the space between the fuel nozzle 10 and the lower shielding piece 520, and at the same time, the first soft pad 550 provides a certain friction force for the fuel nozzle 10; the top surface of the first soft pad 550 is flush with the bottom of the annular groove 11 of the fuel nozzle 10, so as to ensure the spraying effect; the first soft pad 550 can be a silica gel pad or a rubber pad. In the embodiment, the first soft pad 550 is preferably a silica gel pad, which is more safe and environmentally friendly and is not easy to age. The top of the limiting block 240 can also be provided with a soft pad to prevent the fuel nozzle 10 from being damaged when it falls by gravity and contacts the limiting block 240.

[0106] When the fuel nozzle 10 is not accurately aligned with the limiting block 240, that is, the bottom edge of the annular fuel nozzle 10 is in contact with the top of the limiting block 240, that is, the notch 12 of the fuel nozzle 10 is not aligned with the limiting block 240 when placed, after the plurality of lower shielding members 520 are folded, at this time, the plurality of first soft pads 550 are in contact with the surface of the fuel nozzle 10, by driving the driving member 220 to rotate the positioning mandrel 230, the friction between the first soft pad 550 and the surface of the fuel nozzle 10 (that is, static friction is formed between the first soft pad 550 and the surface of the fuel nozzle 10) is greater than the friction between the limiting block 240 and the fuel nozzle 10, so that the fuel nozzle 10 does not rotate with the rotation of the positioning mandrel 230, when the notch 12 of the fuel nozzle 10 is aligned with the limiting block 240, the fuel nozzle 10 will fall due to gravity, so that the notch 12 of the fuel nozzle 10 is clamped into the limiting block 240, forming a limit, so that the fuel nozzle 10 rotates with the rotation of the positioning mandrel 230, the above circumferential positioning adjustment mode further positions the positioning mandrel 230 to the fuel nozzle 10, in this embodiment, the driving member 220 drives the positioning mandrel 230 to rotate slowly for one circle, that is, drives the limiting block 240 to rotate for one circle to return to the original position, so that the position of a group of fuel nozzles 10 on the positioning mandrel 230 is adjusted synchronously, and all are adjusted to the same position.

[0107] When the first transfer mechanism 300 transfers a group of fuel nozzles 10 to the positioning mandrel 230, if the notch 12 of the fuel nozzle 10 is not aligned with the limiting block 240, the position of the fuel nozzle 10 on the positioning mandrel 230 is adjusted by this adjustment mode, which facilitates the subsequent cooperation of the fuel nozzle 10 with the upper shielding mechanism 600, and improves the consistency of the position of the fuel nozzle 10 before spraying, thereby ensuring the spraying effect and spraying quality, and avoiding spraying leakage or over-spraying caused by positioning deviation; and the entire circumferential positioning correction process is completed by the driving member 220, the positioning mandrel 230, the first soft pad 550 and the limiting block 240, without the need for manual adjustment of the attitude of the fuel nozzle 10, fully adapting to the rhythm of the multi-station continuous production of the rotary table 100; this adjustment mode directly uses the driving member 220 of the positioning mechanism 200 and the gravity of the fuel nozzle 10 itself, without the need for additional power components, simplifying the tool structure and reducing energy consumption and failure rate.

[0108] Referring to Figure 11 and Figure 12 In this embodiment, the upper shielding mechanism 600 includes a second bracket 610, a third lifting assembly 620 and a top cover 630;

[0109] The second bracket 610 is provided with the third lifting assembly 620, and the third lifting assembly 620 is provided with a plurality of top covers 630;

[0110] Specifically, referring to Figure 1 and Figure 11The second support 610 is connected to the support platform 30, and the second support 610 is arranged in an inverted U shape and includes a horizontal part and two vertical parts. The vertical part of the second support 610 is connected to the support platform 30, and the horizontal part of the second support 610 is located directly above the corresponding positioning mechanism 200. The third lifting assembly 620 is connected to the horizontal part of the second support 610. The number of the top covers 630 is the same as the number of the positioning mandrels 230 of one positioning mechanism 200, that is, the number of the top covers 630 is ten.

[0111] With reference to Figure 11 The third lifting assembly 620 includes a fourth telescopic piece 621, a second fixed plate 622, and a second guide rod 623. The fourth telescopic piece 621 is vertically arranged and is installed at the top of the horizontal part of the second support 610. The fourth telescopic piece 621 is preferably a telescopic cylinder, and its specific structure and working principle are well known, so they are not described in detail here. In this embodiment, the number of the fourth telescopic pieces 621 is two. The telescopic ends of the fourth telescopic pieces 621 are connected to the top of the second fixed plate 622 through the horizontal part of the second support 610. The telescopic ends of the fourth telescopic pieces 621 are in sliding connection with the horizontal part of the second support 610. The second fixed plate 622 is located below the horizontal part of the second support 610 and is horizontally arranged. The second guide rods 623 are vertically arranged on the top of the second fixed plate 622 at both sides. The second guide rods 623 pass through the horizontal part of the second support 610. The second guide rods 623 improve the stability of the second fixed plate 622 in moving up and down. In this embodiment, a protective cover (not shown in the figure) is arranged outside the fourth telescopic piece 621. The protective cover (not shown in the figure) is connected to the top of the horizontal part of the second support 610. The protective cover (not shown in the figure) protects the fourth telescopic piece 621 from the influence of the paint.

[0112] With reference to Figure 12 The second fixed plate 622 is located below the horizontal part of the second support 610 and is horizontally arranged. The second guide rods 623 are vertically arranged on the top of the second fixed plate 622 at both sides. The second guide rods 623 pass through the horizontal part of the second support 610. The second guide rods 623 improve the stability of the second fixed plate 622 in moving up and down. In this embodiment, a protective cover (not shown in the figure) is arranged outside the fourth telescopic piece 621. The protective cover (not shown in the figure) is connected to the top of the horizontal part of the second support 610. The protective cover (not shown in the figure) protects the fourth telescopic piece 621 from the influence of the paint.

[0113] The third lifting assembly 620 is used to drive the plurality of top covers 630 to lift, so that the top covers 630 can shield the upper part of the fuel nozzle 10.

[0114] Specifically, the fourth telescopic part 621 is used to drive the second fixed plate 622 to lift, thereby driving the plurality of top covers 630 to lift synchronously, shielding / unshielding the upper part of the fuel nozzle 10 by the top covers 630, and ensuring the action consistency of the plurality of fuel nozzles 10.

[0115] In the embodiment, the base 20 is provided with an electrical control cabinet (not shown in the figure) on one side; the electrical control cabinet (not shown in the figure) contains electrical elements, system programs, operation panels and the like, controls the entire device to perform actions according to the predetermined programs, processes various sensors and signal sources, outputs corresponding program instructions, and the operating personnel can input the data of the fuel nozzle 10 into the system program through the external touch screen, while the external indicator light and alarm light display the running state of the device, and the external button can pause or emergency stop the running of the device.

[0116] Working principle: feeding process: the positioning mechanism 200 is located in the feeding area, when in use, the plurality of lower shielding parts 520 are in the open state, the clamping assembly 340 is initially located above the feeding placement area, and the second telescopic part 341 is in the extended state;

[0117] After descending through the first telescopic part 331, the plurality of clamping assemblies 340 are driven to descend synchronously to the specified position, and then the second telescopic part 341 is retracted, the first fixed plate 345 is driven to ascend, the first connecting rod 344 is synchronously pulled to move, the first connecting rod 344 drives the moving plate 3431 to move, thereby driving the clamping plate 3432 to move close to the fuel nozzle 10 for clamping, then the fuel nozzle 10 is driven to ascend by the first telescopic part 331, the support plate 350 is driven to rotate by the rotating part 310, thereby driving the first support 320 to rotate, and after rotating to the specified position, the rotation is stopped, the plurality of clamping assemblies 340 are driven to descend synchronously by the first telescopic part 331, the fuel nozzle 10 is placed on the inner core 233 of the positioning core shaft 230, then the fuel nozzle 10 is loosened by the extension of the second telescopic part 341, the fuel nozzle 10 will move down a certain distance (the actual falling distance is not more than 10 mm) due to gravity, then the plurality of clamping assemblies 340 are driven to ascend synchronously by the first telescopic part 331, the rotating part 310 is returned to the initial position, and then the rotating table 100 drives the positioning mechanism 200 to rotate;

[0118] Adjusting process: through the rising of the third telescopic part 531, the moving ring 532 is driven to rise synchronously, thereby driving the second connecting rod 540 to move, the second connecting rod 540 drives the lower shielding part 520 to close, the lower shielding part 520 shields the lower part of the fuel nozzle 10, through the driving of the driving part 220, the positioning mandrel 230 is slowly rotated for one circle, the fuel nozzle 10 which is not accurately aligned with the limiting block 240 can be adjusted in position, so that the gap 12 of the fuel nozzle 10 is aligned with the limiting block 240, then the rotating table 100 drives the positioning mechanism 200 to continue to rotate;

[0119] Spraying process: the positioning mechanism 200 enters the spraying area, through the fourth telescopic part 621 driving the second fixed plate 622 to descend, thereby driving multiple top covers 630 to descend synchronously, through the top cover 630 shielding the upper part of the fuel nozzle 10, then through the spraying device spraying the annular groove 11 area of the fuel nozzle 10, after the spraying is completed, the fourth telescopic part 621 drives the second fixed plate 622 to rise, finally canceling the shielding of the upper part of the fuel nozzle 10, then the rotating table 100 drives the positioning mechanism 200 to continue to rotate;

[0120] Blanking process: the positioning mechanism 200 enters the blanking area, the clamping assembly 340 of the second transfer mechanism 400 (the same below) is initially located above the corresponding positioning mechanism 200;

[0121] Through the descending of the third telescopic part 531, the moving ring 532 is driven to descend synchronously, thereby driving the second connecting rod 540 to move, the second connecting rod 540 drives the lower shielding part 520 to open, canceling the shielding of the lower part of the fuel nozzle 10, then through the descending of the first telescopic part 331 of the second transfer mechanism 400, multiple clamping assemblies 340 are driven to descend synchronously, after descending to the specified position, through the retraction of the second telescopic part 341, the first fixed plate 345 is driven to rise, synchronously pulling the first connecting rod 344 to move, the first connecting rod 344 drives the moving plate 3431 to move, thereby driving the clamping plate 3432 to approach, clamping the fuel nozzle 10 on the positioning mandrel 230, then through the first telescopic part 331 driving the fuel nozzle 10 to rise, through the rotating part 310 driving the support plate 350 to rotate, thereby driving the first support 320 to rotate, after rotating to the specified position, stop rotating, through the first telescopic part 331 descending, multiple clamping assemblies 340 are driven to descend synchronously, placing the fuel nozzle 10 to the placement area, then through the first telescopic part 331 driving multiple clamping assemblies 340 to rise synchronously, through the rotating part 310 returning to the initial position, then the rotating table 100 drives the positioning mechanism 200 to continue to rotate, returning to the feeding area, completing the spraying process of the fuel nozzle 10.

[0122] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or "comprises" does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0123] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A multi-station spraying fixture for fuel nozzles, characterized in that, include: A turntable (100) that can rotate in its own circumference; Positioning mechanism (200), wherein multiple positioning mechanisms (200) are provided and are evenly distributed on turntable (100), and the positioning mechanisms (200) are used to position multiple fuel nozzles (10); The first transfer mechanism (300) may be provided in correspondence with the positioning mechanism (200). The first transfer mechanism (300) is used to transfer a plurality of fuel nozzles (10) to be sprayed to one of the positioning mechanisms (200). The second transfer mechanism (400) may be provided corresponding to the positioning mechanism (200). The second transfer mechanism (400) is used to transfer multiple sprayed fuel nozzles (10) from one of the positioning mechanisms (200) to the placement area. The lower blocking mechanism (500) is connected to the positioning mechanism (200) and is used to block the lower part of a plurality of fuel nozzles (10). An upper shielding mechanism (600) is provided corresponding to a positioning mechanism (200), and the upper shielding mechanism (600) is located in the spraying area. The upper shielding mechanism (600) is used to shield the upper part of multiple fuel nozzles (10). The positioning mechanism (200) is moved by the rotation of the turntable (100) so that the positioning mechanism (200) passes through the first transfer mechanism (300), the upper blocking mechanism (600) and the second transfer mechanism (400) in sequence. The positioning mechanism (200) includes a fixed frame (210), a driving component (220), a positioning spindle (230), and a limiting block (240). The fixed frame (210) is connected to the turntable (100). Multiple drive components (220) are connected to the fixed frame (210). The output end of the drive component (220) is connected to a positioning spindle (230). A limiting block (240) for limiting the fuel nozzle (10) is provided on the positioning spindle (230). The positioning mandrel (230) is used for initial positioning of the fuel nozzle (10); The lower blocking mechanism (500) includes a mounting ring (510), a lower blocking component (520), a second lifting assembly (530), and a second connecting rod (540). The mounting ring (510) is sleeved on the outside of the positioning mandrel (230). A lower shield (520) is rotatably connected to the mounting ring (510). A second lifting assembly (530) located below the mounting ring (510) is provided on the fixing frame (210). One end of a second connecting rod (540) is rotatably connected to the telescopic end of the second lifting assembly (530). The other end of the second connecting rod (540) is rotatably connected to the lower shield (520). The second lifting assembly (530) is raised and lowered so that the second link (540) drives the lower blocking member (520) to rotate, so that the lower blocking member (520) blocks the lower part of the fuel nozzle (10).

2. The multi-station spraying fixture for fuel nozzles according to claim 1, characterized in that, The first transfer mechanism (300) and the second transfer mechanism (400) have the same structure, both including a rotating component (310), a first support (320), a first lifting component (330) and a clamping component (340). The rotating end of the rotating component (310) is connected to a first bracket (320), and a first lifting assembly (330) is provided on the first bracket (320), and a plurality of clamping assemblies (340) are provided on the first lifting assembly (330). The rotating component (310) is used to transfer the fuel nozzle (10); The first lifting assembly (330) is used to drive the plurality of clamping assemblies (340) to lift or lower; The clamping assembly (340) is used to clamp the fuel nozzle (10).

3. The multi-station spraying fixture for fuel nozzles according to claim 2, characterized in that, The first lifting assembly (330) includes a first telescopic member (331) and a mounting frame (332); The first telescopic member (331) is connected to the first bracket (320), and the telescopic end of the first telescopic member (331) is connected to a mounting frame (332). The mounting frame (332) is provided with a plurality of clamping components (340). The first telescopic component (331) is used to drive the mounting frame (332) to rise and fall.

4. The multi-station spraying fixture for fuel nozzles according to claim 3, characterized in that, The clamping assembly (340) includes a second telescopic member (341), a guide (342), a clamping part (343), and a first connecting rod (344). The second telescopic member (341) is internally connected to the mounting frame (332). The lower part of the mounting frame (332) is provided with a guide part (342). A clamping part (343) is slidably provided on the guide part (342). The telescopic end of the second telescopic member (341) is rotatably connected to one end of the first connecting rod (344). The other end of the first connecting rod (344) is rotatably connected to the clamping part (343). The guide part (342) is used to guide the movement of the clamping part (343); The clamping part (343) is used to clamp the fuel nozzle (10); The first link (344) drives the clamping part (343) to move on the guide part (342) by raising and lowering the second telescopic member (341).

5. The multi-station spraying fixture for fuel nozzles according to claim 4, characterized in that, The guide section (342) includes a connecting plate (3421), a moving groove (3422), and a third guide rod (3423). The connecting plate (3421) is connected to the lower part of the mounting frame (332). The connecting plate (3421) has multiple moving slots (3422). A third guide rod (3423) is installed in the moving slot (3422). A clamping part (343) is slidably provided on the third guide rod (3423).

6. The multi-station spraying fixture for fuel nozzles according to claim 5, characterized in that, The clamping part (343) includes a movable plate (3431) and a clamping plate (3432). The movable plate (3431) passes through the movable slot (3422) and is slidably connected to the third guide rod (3423). One end of the movable plate (3431) is rotatably connected to the first connecting rod (344), and the other end of the movable plate (3431) is connected to the clamping plate (3432).

7. The multi-station spraying fixture for fuel nozzles according to claim 1, characterized in that, The lower shield (520) is provided with a first soft pad (550) on its upper part, which can contact the surface of the fuel nozzle (10). When the fuel nozzle (10) is not accurately aligned with the limit block (240), the positioning spindle (230) is rotated by the drive component (220), and the fuel nozzle (10) is not rotated synchronously by the first soft pad (550). When the fuel nozzle (10) is aligned with the limit block (240), the fuel nozzle (10) falls with gravity and forms a limit with the limit block (240), so that the positioning spindle (230) can further position the fuel nozzle (10).

8. The multi-station spraying fixture for fuel nozzles according to claim 1, characterized in that, The upper shielding mechanism (600) includes a second bracket (610), a third lifting assembly (620), and a top cover (630). The second bracket (610) is provided with a third lifting assembly (620), and the third lifting assembly (620) is provided with a plurality of top covers (630). The third lifting assembly (620) is used to lift and lower the multiple top covers (630) so that the top covers (630) can block the upper part of the fuel nozzle (10).

Images