Oil nozzle assembly production line

Abstract

The utility model discloses an oil nozzle assembly production line which comprises a machining table, a linear carrying mechanism, an oil nozzle feeding vibration disc, a steel ball feeding mechanism, a spring feeding mechanism, a spring detection device, a riveting mechanism and a riveting detection device. The linear carrying mechanism is arranged on the machining table and comprises a lifting base, a feeding straight plate and a servo motor; the lifting base is fixedly installed on the machining table, a servo motor is arranged on the lifting base, and the servo motor drives the feeding straight plate to reciprocate in the length direction; seven stations are arranged on the feeding straight plate at equal intervals, the distance between the seven stations is consistent with the distance between the pneumatic clamping jaws, a discharging sorting mechanism is further arranged at the tail end of the feeding straight plate, and the servo motor drives the seven pneumatic clamping jaws on the feeding straight plate to carry workpieces on the previous station to the next station. The machined and detected workpieces are put into a discharging sorting mechanism; the production line can improve the assembly efficiency and reduce the assembly error rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile fuel injection nozzles, and particularly relates to a fuel injection nozzle assembly production line. Background Art

[0002] The fuel injector is a crucial component of the engine's fuel system, injecting fuel into the cylinder for combustion, thereby driving the engine. The injector consists of a nozzle, a steel ball, and a spring. During assembly, the steel ball and spring must be sequentially inserted into the nozzle and pressed securely. Because the nozzle itself is small, the steel ball and spring are even smaller, requiring meticulous assembly. Otherwise, it's easy for the steel ball to be missed, the spring to bounce away, or the assembly to be incompletely secured. Furthermore, continuity must be maintained between assembly steps. This continuous operation shortens the time between steps and reduces the probability of error. The existing equipment used a turntable to drive the workpieces between stations. However, the centrifugal force generated by the turntable's rotation could cause the tiny steel balls and springs to roll or bounce. Furthermore, a motor system was required to drive the turntable, increasing the production cost of the entire assembly equipment. Therefore, improvements were required to the existing equipment. Utility Model Content

[0003] In response to the above problems and technical needs, the utility model provides a fuel injector assembly production line, which is equipped with a linear feeding and handling channel, can take into account the handling needs of each workstation, and complete the filling and riveting processes of the fuel nozzle, steel ball and spring in sequence, thereby improving assembly efficiency and reducing assembly error rate.

[0004] The technical solution of the utility model is as follows: a fuel injector assembly production line, comprising a processing table, a linear transport mechanism, a fuel nozzle feeding vibration plate, a steel ball feeding mechanism, a spring feeding mechanism, a spring detection device, a riveting mechanism and a riveting detection device. The linear transport mechanism is arranged on the processing table, and the linear transport mechanism comprises a lifting base, a feeding straight plate and a servo motor. The lifting base is fixedly mounted on the processing table, and a servo motor is provided on the lifting base, which drives the feeding straight plate to reciprocate along the length direction; seven pneumatic clamps are equidistantly arranged on the feeding straight plate, and seven workstations corresponding to the fuel nozzle feeding vibration plate, the steel ball feeding mechanism, the spring feeding mechanism, the spring detection device, the riveting mechanism and the riveting detection device are arranged in sequence perpendicular to the side of the feeding straight plate. The spacing between the seven workstations is consistent with the spacing between the pneumatic clamps. A blanking and sorting mechanism is also provided at the end of the feeding straight plate. The servo motor drives the seven pneumatic clamps on the feeding straight plate to transport the workpiece on the previous workstation to the next workstation, and puts the workpiece that has completed processing and inspection into the blanking and sorting mechanism.

[0005] Furthermore, the linear transport mechanism is also provided with a screw module, a slide is provided on the screw module, the feeding straight plate is fixedly connected to the slide, the servo motor is connected to the screw module, and the servo motor drives the feeding straight plate to move through the screw module.

[0006] Furthermore, a long support is provided parallel to the side of the screw module, and the long support is fixed on the lifting base. A slide rail of the same length is provided at the bottom of the feeding straight plate. Multiple fixed sliders are installed on the long support, and the tops of the fixed sliders are all slidably connected to the slide rail.

[0007] Furthermore, an operating frame is provided between the seven workstations and the corresponding pneumatic grippers. The workpiece is placed on the top of the operating frame for processing or testing, and the pneumatic fingers on the pneumatic grippers move the workpiece on the previous operating frame to the next operating frame.

[0008] Furthermore, the steel ball loading mechanism includes a steel ball hopper, a hopper bracket, a first cylinder, a first guide rail, a blanking block and a steel ball discharge nozzle. The hopper bracket is fixedly arranged on the processing table. A steel ball hopper is provided on the top of the hopper bracket, a first guide rail is provided on the upper inner part of the hopper bracket, and a first cylinder is provided on the lower part. The telescopic end of the first cylinder is vertically connected to the blanking block upward, and the blanking block is slidably connected to the first guide rail. A blanking chute is provided in the blanking block, and the top of the blanking chute is connected to a blanking straight pipe. The top of the blanking straight pipe extends vertically into the steel ball hopper, and the bottom end of the blanking chute is connected to the steel ball discharge nozzle. A side cylinder that can push the steel balls in the blanking chute is also provided on the side of the blanking block; the first cylinder drives the blanking straight pipe to move up and down, so that the steel balls fall into the blanking chute through the blanking straight pipe, and the side cylinder pushes the steel balls in the blanking chute, so that the steel balls fall from the steel ball discharge nozzle, and the steel ball discharge nozzle is facing the operating frame below.

[0009] Furthermore, the spring feeding mechanism includes a spring unloading vibration plate, a material transfer bracket, a first industrial camera, a spring guide plate and a spring clamp. A material transfer bracket is provided at the end of the spring unloading vibration plate. The material transfer bracket includes a horizontal turntable, a material cylinder and a material suction head. The horizontal turntable is fixedly mounted on the processing table. The material cylinder is fixedly connected to the horizontal turntable. A material suction head is provided at the telescopic end of the material cylinder. The material suction head can be aligned with the end of the spring unloading vibration plate to suck the material. The horizontal turntable drives the material suction head to rotate vertically upward. A first industrial camera is provided at the oblique rear of the material transfer bracket. The first An industrial camera captures images of the vertically upward suction head to determine whether the material is in place. A spring guide plate is provided between the material transfer bracket and the operating frame, a guide hole is provided at the end of the spring guide plate, and a spring clamp is provided on the side of the spring guide plate. A rotating cylinder is fixed at the bottom of the spring guide block, and the rotating cylinder drives the spring guide block to rotate horizontally so that the guide hole is aligned with the oil nozzle workpiece placed on the operating frame. The spring clamp can move in three-dimensional space. The spring clamp clamps the spring from the vertical suction head, and then moves the spring to the top of the guide hole to align and release it, so that the spring is installed in the oil nozzle workpiece.

[0010] Furthermore, the spring detection device includes a fixed bracket and a second industrial camera. The second industrial camera is connected to the processing table through the fixed bracket. The second industrial camera is aimed at the operating frame in front. The second industrial camera captures the oil nozzle workpiece on the operating frame to determine the assembly status of the spring in the oil nozzle.

[0011] Furthermore, the riveting mechanism includes a primary riveting platform and a secondary riveting platform. After the spring is loaded into the oil nozzle, it is transported to the primary riveting platform and the secondary riveting platform in turn to perform cylinder riveting operations.

[0012] Furthermore, the riveting detection device includes a vertical slide rail, a slider and a third industrial camera. The vertical slide rail is fixedly connected to the processing table. The third industrial camera is connected to the vertical slide rail through the slider. The bottom of the third industrial camera faces the operating frame. The third industrial camera takes a picture of the oil nozzle workpiece to determine whether the riveting is qualified.

[0013] Furthermore, the material unloading and sorting mechanism includes an NG trough, an OK trough and a chute arranged between the two. The top of the chute is arranged above the NG trough, and the bottom of the chute is inclined above the OK trough. A servo cylinder is provided at the bottom of the chute, and the servo cylinder drives the chute to leave the two troughs. The pneumatic clamp at the end of the feeding straight plate can put the workpiece into the NG trough or the chute, so that the NG products and OK products of the workpiece can be collected separately.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1) The present invention adopts a linear transport mechanism to transfer the workpiece. The feeding straight plate in the linear transport mechanism transports the workpiece on each workstation to the next workstation at the same time with each reciprocating motion. The processing rhythm is consistent and the processing efficiency is high. 2) Compared with the disc-type transfer station, the linear transport mechanism can avoid the centrifugal force generated by the rotation from throwing steel balls, springs and other accessories out of the oil nozzle workpiece. It is more suitable for the assembly of small accessories, with a low incidence of assembly NG products and safer assembly. 3) The linear transport mechanism is adopted, which is convenient for arranging corresponding processing equipment at each workstation. The equipment can be kept at a certain distance from each other, and their respective processing actions are not interfered with, which is convenient for arranging the equipment on the processing table. The processing actions are clearer and more intuitive, and the maintenance of each equipment is also easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structural diagram of the fuel injection nozzle assembly production line of the utility model;

[0016] Figure 2 It is a linear transport mechanism structure Figure 1 ;

[0017] Figure 3 It is a linear transport mechanism structure Figure 2 ;

[0018] Figure 4 The structure of the steel ball feeding mechanism Figure 1 ;

[0019] Figure 5 The structure of the steel ball feeding mechanism Figure 2 ;

[0020] Figure 6 This is the overall structural diagram of the spring feeding mechanism;

[0021] Figure 7 This is the position relationship diagram of the material transfer bracket and the spring guide plate;

[0022] Figure 8 It is a structural diagram of the riveting mechanism and the riveting detection device;

[0023] Figure 9 This is the structural diagram of the blanking and sorting mechanism;

[0024] The following are marked in the figure: processing table 1, operating frame 11, linear transport mechanism 2, lifting base 21, feeding straight plate 22, servo motor 23, pneumatic clamp 24, screw module 25, slide 26, long support table 27, fixed slider 271, slide rail 28, oil nozzle feeding vibration plate 3, steel ball feeding mechanism 4, steel ball silo 41, silo bracket 42, first cylinder 43, first guide rail 44, blanking block 45, blanking straight pipe 451, steel ball discharge nozzle 46, side cylinder 47, spring feeding mechanism 5, spring Unsprung material vibration plate 51, material transfer bracket 52, horizontal turntable 521, material taking cylinder 522, material suction head 523, first industrial camera 53, spring guide plate 54, guide hole 541, rotating cylinder 542, spring clamp 55, spring detection device 6, primary riveting platform 71, secondary riveting platform 72, riveting detection device 8, vertical slide rail 81, slider 82, third industrial camera 83, material sorting mechanism 9, NG material trough 91, OK material trough 92, slide 83, servo cylinder 94. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-9The figure shows a fuel injector assembly production line of the present invention, including a processing table 1, a linear transport mechanism 2, a fuel injector feeding vibration plate 3, a steel ball feeding mechanism 4, a spring feeding mechanism 5, a spring detection device 6, a riveting mechanism 7 and a riveting detection device 8. The linear transport mechanism 2 is arranged on the processing table 1. The linear transport mechanism 2 includes a lifting base 21, a feeding straight plate 22 and a servo motor 23. The lifting base 21 is fixedly installed on the processing table 1. The servo motor 23 is provided on the lifting base 21. The servo motor 23 drives the feeding straight plate 22 to move back and forth along the length direction; the feeding straight plate 22 is provided with a servo motor 23. Seven pneumatic clamps 24 are arranged at equal intervals on the plate 22. Seven workstations corresponding to the oil nozzle feeding vibration plate 3, steel ball feeding mechanism 4, spring feeding mechanism 5, spring detection device 6, riveting mechanism 7 and riveting detection device 8 are arranged perpendicular to the side of the feeding straight plate 22. The spacing between the seven workstations is consistent with the spacing between the pneumatic clamps. A blanking and sorting mechanism 9 is also provided at the end of the feeding straight plate. The servo motor 23 drives the seven pneumatic clamps 24 on the feeding straight plate 22 to move the workpiece on the previous workstation to the next workstation, and put the workpiece that has completed processing and inspection into the blanking and sorting mechanism.

[0027] An operating frame 11 is provided between each of the seven workstations and the corresponding pneumatic grippers 24. The workpiece is placed on top of the operating frame 11 for processing or inspection. The pneumatic fingers on the pneumatic grippers 24 move the workpiece on the previous operating frame to the next operating frame.

[0028] The linear transport mechanism 2 is further provided with a screw module 25, on which a slide 26 is mounted. The feed straight plate 22 is fixedly connected to the slide 26. A servo motor 23 is connected to the screw module 25, and the servo motor 23 drives the feed straight plate 22 to move via the screw module 25. A long support 27 is provided parallel to the side of the screw module 25. The long support 27 is fixedly mounted on the lifting base 21. A slide rail 28 of the same length as the feed straight plate 22 is provided at the bottom of the long support 27. A plurality of fixed sliders 271 are mounted on the long support 27, and the tops of the fixed sliders 271 are all slidably connected to the slide rails 28.

[0029] The steel ball feeding mechanism 4 includes a steel ball hopper 41, a hopper bracket 42, a first cylinder 43, a first guide rail 44, a blanking block 45 and a steel ball discharge nozzle 46. The hopper bracket 42 is fixedly arranged on the processing table 1. The top of the hopper bracket 42 is provided with a steel ball hopper 41, the upper inner part of the hopper bracket 42 is provided with a first guide rail 44, and the lower part is provided with a first cylinder 43. The telescopic end of the first cylinder 43 is vertically connected to the blanking block 45 upward, and the blanking block 45 is slidably connected to the first guide rail 44. A blanking channel is provided in the blanking block 45. The top of the trough is connected to the blanking straight pipe 451, the top of the blanking straight pipe 451 extends vertically into the steel ball hopper 41, the bottom end of the blanking trough is connected to the steel ball discharge nozzle 46, and the side of the blanking block 45 is also provided with a side cylinder 47 that can push the steel balls in the blanking trough; the first cylinder 43 drives the blanking straight pipe 451 to move up and down, so that the steel balls fall into the blanking trough through the blanking straight pipe 451, and the side cylinder 47 pushes the steel balls in the blanking trough, so that the steel balls fall from the steel ball discharge nozzle 46, and the steel ball discharge nozzle 46 is facing the operating frame 11 below.

[0030] The spring feeding mechanism 5 includes a spring feeding vibration disk 51, a material transfer bracket 52, a first industrial camera 53, a spring guide plate 54 and a spring clamp 55. The end of the spring feeding vibration disk 51 is provided with a material transfer bracket 52, and the material transfer bracket 52 includes a horizontal turntable 521, a material cylinder 522 and a suction head 523. The horizontal turntable 521 is fixedly mounted on the processing table 1, and the material cylinder 522 is fixedly connected to the horizontal turntable 521. The telescopic end of the material cylinder 522 is provided with a suction head 523, and the suction head 523 can be aligned with the end of the spring feeding vibration disk 51 to suck the material. The horizontal turntable 521 drives the suction head 523 to rotate vertically upward. The first industrial camera 53 is provided at the oblique rear of the material transfer bracket 52. Camera 53, the first industrial camera 53 takes images of the vertically upward suction head 523 to determine whether the material is in place; a spring guide plate 54 is provided between the material transfer bracket 52 and the operating frame 11, and a guide hole 541 is provided at the end of the spring guide plate 54. A spring clamp 55 is provided on the side of the spring guide plate 54. A rotating cylinder 542 is fixed at the bottom of the spring guide block 54. The rotating cylinder 542 drives the spring guide block 54 to rotate horizontally so that the guide hole 541 is aligned with the oil nozzle workpiece placed on the operating frame 11. The spring clamp 55 can move in three-dimensional space. The spring clamp 55 clamps the spring from the vertical suction head, and then moves the spring to the top of the guide hole to align and release it, so that the spring is installed in the oil nozzle workpiece.

[0031] The spring detection device 6 includes a fixed bracket 61 and a second industrial camera 62. The second industrial camera 62 is connected to the processing table 1 through the fixed bracket 61. The second industrial camera 62 is aimed at the operating frame 11 in front. The second industrial camera 62 captures the oil nozzle workpiece on the operating frame to determine the assembly status of the spring in the oil nozzle.

[0032] The riveting mechanism 7 includes a primary riveting platform 71 and a secondary riveting platform 72. After the spring is loaded into the oil nozzle, it is transported to the primary riveting platform 71 and the secondary riveting platform 72 in sequence for cylinder riveting operation. The riveting detection device 8 includes a vertical slide 81, a slider 82 and a third industrial camera 83. The vertical slide 81 is fixedly connected to the processing table 1. The third industrial camera 83 is connected to the vertical slide 81 through the slider 82. The bottom of the third industrial camera 83 faces the operating frame. The third industrial camera 83 takes a picture of the oil nozzle workpiece to determine whether the riveting is qualified.

[0033] The unloading and sorting mechanism 9 includes an NG trough 91, an OK trough 92 and a chute arranged between the two. The top of the chute 93 is arranged above the NG trough 91, and the bottom of the chute 93 is inclined above the OK trough 92. A servo cylinder 94 is provided at the bottom of the chute 93. The servo cylinder 94 drives the chute to leave the two troughs. The pneumatic clamp at the end of the feeding straight plate can put the workpiece into the NG trough 91 or the chute 93, so that the NG products and OK products of the workpiece can be collected separately.

[0034] The operation process of this utility model:

[0035] The oil nozzle feeding vibration plate 3 feeds the first operating frame, and the feeding straight plate 22 moves the oil nozzle from the first operating frame to the second operating frame. The first cylinder 43 in the steel ball feeding mechanism 4 extends and contracts once, and a steel ball falls from the steel ball hopper 41 along the straight drop pipe 451 into the drop block 45. The side cylinder 47 pushes the steel ball in the drop block 45, causing it to fall along the drop channel into the steel ball discharge nozzle 46, and then fall from the steel ball discharge nozzle 46 into the oil nozzle below, completing the steel ball feeding;

[0036] The feeding straight plate 22 is reset after one feeding is completed, and the pneumatic clamp 24 returns from the rear operating frame to the front operating frame to maintain the clamping state of the workpiece, waiting for the next handling;

[0037] The feeding straight plate 22 transfers the oil nozzle workpiece equipped with steel balls to the third operating frame, and the pneumatic clamp 24 maintains the clamping of the workpiece. The spring unloading vibration plate 51 conveys the spring to the end and aligns it with the suction head 523. The material taking cylinder 522 drives the suction head 523 forward to suck up a spring workpiece, and then the horizontal turntable 521 rotates, and the suction head 523 turns to a vertical state. The first industrial camera 53 is aimed at the suction head 523 to take a picture to confirm that the suction head 523 has clamped the spring workpiece. At the same time, the rotating cylinder 542 drives the spring guide plate 541 to rotate, so that the guide hole 541 is aligned with the oil nozzle. The spring clamp 55 clamps the spring workpiece from the suction head 523 to the top of the guide hole 541, and puts it into the oil nozzle through the guide hole 541 to complete the spring loading.

[0038] The feeding straight plate 22 carries the workpiece loaded with steel balls and springs to the fourth operating rack. After the second industrial camera 62 detects that the springs have been loaded, the feeding straight plate 22 transfers the workpiece to the fifth operating rack. The primary riveting station 71 positions the workpiece and performs the first riveting. The feeding straight plate 22 then transfers the workpiece to the sixth operating rack again. The secondary riveting station 72 performs the final riveting on the workpiece.

[0039] The feeding straight plate 22 transports the riveted workpiece to the seventh operating rack, and the third industrial camera 83 takes a picture of the assembled workpiece to confirm whether it is a qualified product. In the above process, if all three industrial cameras pass the inspection, the servo cylinder 94 of the unloading and sorting mechanism 9 will not work, and the feeding straight plate 22 will drop the workpiece on the seventh operating rack from above the chute 93, and the workpiece slides into the OK trough 92 to be collected. If not all of them pass the inspection of the three industrial cameras, the servo cylinder 94 will start to move the chute 93 away from the NG trough 91, and the unqualified workpiece will be directly put into the NG trough 91. In this way, the NG products and OK products are sorted and collected.

[0040] The above descriptions are merely some preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes and substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A fuel injection nozzle assembly production line, characterized in that: It includes a processing table, a linear transport mechanism, an oil nozzle feeding vibration plate, a steel ball feeding mechanism, a spring feeding mechanism, a spring detection device, a riveting mechanism and a riveting detection device. The linear transport mechanism is arranged on the processing table. The linear transport mechanism includes a lifting base, a feeding straight plate and a servo motor. The lifting base is fixedly installed on the processing table. A servo motor is arranged on the lifting base. The servo motor drives the feeding straight plate to reciprocate along the length direction. Seven pneumatic clamps are arranged at equal intervals on the feeding straight plate. Seven workstations corresponding to the oil nozzle feeding vibration plate, the steel ball feeding mechanism, the spring feeding mechanism, the spring detection device, the riveting mechanism and the riveting detection device are arranged in sequence perpendicular to the side of the feeding straight plate. The spacing between the seven workstations is consistent with the spacing between the pneumatic clamps. A blanking and sorting mechanism is also provided at the end of the feeding straight plate. The servo motor drives the seven pneumatic clamps on the feeding straight plate to transport the workpiece on the previous workstation to the next workstation, and put the workpiece that has been processed and tested into the blanking and sorting mechanism.

2. The fuel injection nozzle assembly production line according to claim 1, characterized in that: The linear transport mechanism is also provided with a screw module, a slide is provided on the screw module, a feeding straight plate is fixedly connected to the slide, a servo motor is connected to the screw module, and the servo motor drives the feeding straight plate to move through the screw module.

3. The fuel injection nozzle assembly production line according to claim 2, characterized in that: A long support is provided parallel to the side of the screw module, and the long support is fixed on the lifting base. A slide rail of the same length is provided at the bottom of the feeding straight plate. A plurality of fixed sliders are installed on the long support, and the tops of the fixed sliders are slidably connected to the slide rails.

4. The fuel injection nozzle assembly production line according to claim 3, characterized in that: An operating frame is provided between the seven workstations and the corresponding pneumatic clamps. The workpiece is placed on the top of the operating frame for processing or testing. The pneumatic fingers on the pneumatic clamps move the workpiece on the previous operating frame to the next operating frame.

5. The fuel injection nozzle assembly production line according to claim 4, characterized in that: The steel ball feeding mechanism includes a steel ball silo, a silo bracket, a first cylinder, a first guide rail, a blanking block and a steel ball discharging nozzle. The silo bracket is fixedly arranged on the processing table. A steel ball silo is arranged on the top of the silo bracket, a first guide rail is arranged on the upper inner side of the silo bracket, and a first cylinder is arranged on the lower part. The telescopic end of the first cylinder is vertically connected to the blanking block upward, and the blanking block is slidably connected to the first guide rail. A blanking chute is arranged in the blanking block, and the top of the blanking chute is connected to a blanking straight pipe, and the top of the blanking straight pipe vertically extends into the steel ball silo, and the bottom end of the blanking chute is connected to the steel ball discharging nozzle. A side cylinder that can push the steel balls in the blanking chute is also arranged on the side of the blanking block; the first cylinder drives the blanking straight pipe to move up and down, so that the steel balls fall into the blanking chute through the blanking straight pipe, and the side cylinder pushes the steel balls in the blanking chute to make the steel balls fall from the steel ball discharging nozzle, and the steel ball discharging nozzle is facing the operating frame below.

6. The fuel injection nozzle assembly production line according to claim 5, characterized in that: The spring feeding mechanism includes a spring feeding vibration plate, a material transfer bracket, a first industrial camera, a spring guide plate and a spring clamp. A material transfer bracket is arranged at the end of the spring feeding vibration plate. The material transfer bracket includes a horizontal turntable, a feeding cylinder and a suction head. The horizontal turntable is fixedly mounted on the processing table. The feeding cylinder is fixedly connected to the horizontal turntable. A suction head is arranged at the telescopic end of the feeding cylinder. The suction head can be aligned with the end of the spring feeding vibration plate to suck the material. The horizontal turntable drives the suction head to rotate vertically upward. A first industrial camera is arranged at the oblique rear of the material transfer bracket. The first industrial The camera captures images of the vertically upward suction head to determine whether the material is in place; a spring guide plate is provided between the material transfer bracket and the operating frame, a guide hole is provided at the end of the spring guide plate, a spring clamp is provided on the side of the spring guide plate, and a rotating cylinder is fixed at the bottom of the spring guide block. The rotating cylinder drives the spring guide block to rotate horizontally so that the guide hole is aligned with the oil nozzle workpiece placed on the operating frame. The spring clamp can move in three-dimensional space. The spring clamp clamp clamps the spring from the vertical suction head, and then moves the spring to the top of the guide hole to align and release it, so that the spring is installed in the oil nozzle workpiece.

7. The fuel injection nozzle assembly production line according to claim 6, characterized in that: The spring detection device includes a fixed bracket and a second industrial camera. The second industrial camera is connected to the processing table through the fixed bracket. The second industrial camera is aimed at the operating frame in front. The second industrial camera captures the oil nozzle workpiece on the operating frame to determine the assembly status of the spring in the oil nozzle.

8. The fuel injection nozzle assembly production line according to claim 7, characterized in that: The riveting mechanism comprises a primary riveting platform and a secondary riveting platform. After the spring is loaded into the oil nozzle, it is transported to the primary riveting platform and the secondary riveting platform in sequence to perform the cylinder riveting operation.

9. The fuel injection nozzle assembly production line according to claim 8, characterized in that: The riveting detection device includes a vertical slide rail, a slider and a third industrial camera. The vertical slide rail is fixedly connected to the processing table. The third industrial camera is connected to the vertical slide rail through the slider. The bottom of the third industrial camera faces the operating frame. The third industrial camera takes a picture of the oil nozzle workpiece to determine whether the riveting is qualified.

10. The fuel injection nozzle assembly production line according to claim 9, characterized in that: The material unloading and sorting mechanism includes an NG trough, an OK trough and a slide therebetween. The top of the slide is located above the NG trough, and the bottom of the slide is inclined above the OK trough. A servo cylinder is provided at the bottom of the slide, and the servo cylinder drives the slide to leave the two troughs. The pneumatic clamp at the end of the feeding straight plate can put the workpiece into the NG trough or the slide, so that the NG and OK products of the workpiece can be collected separately.

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