A device for detecting small outer circle of fuel injection nozzle

Abstract

The utility model relates to a small outer circle detection device for a fuel injector, comprising at least one detection component, the detection component comprising a clamping component, the clamping component being arranged above a clamping mechanism, a positioning component being arranged below the clamping component, the clamping mechanism being connected to a driving mechanism, the driving mechanism driving the clamping mechanism to clamp the fuel injector and then vertically placing it in the positioning component, the fuel injector being positioned by the clamping mechanism, the detection mechanism being arranged on the side of the positioning component, the detection mechanism comprising a detection camera, the detection camera being oriented toward the small outer circle position of the fuel injector, the positioning component comprising a positioning seat, a driven wheel and a driver, the positioning seat being arranged below the clamping component, the positioning seat having a fan-shaped positioning surface for supporting the fuel injector, a driven wheel being arranged below the positioning seat, the driven wheel being connected to the driving wheel of the driver through a transmission belt, and the driver driving the positioning seat to rotate. The utility model can stably position the fuel injector during detection, so that the fuel injector can be stably rotated for detection, thereby improving detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection nozzle detection, in particular to a fuel injection nozzle small outer circle detection device. Background Art

[0002] The fuel injector is one of the key components of the electronic fuel injection engine. Its performance will seriously affect the engine's performance. When the ECU issues a fuel injection command, its voltage signal will cause current to flow through the coil inside the fuel injector, generating a magnetic field to attract the valve needle, allowing the valve to open so that the fuel can be sprayed out from the injection hole. The structure of the fuel injector has a small outer circle. Since the small outer circle is cylindrical, the fuel injector needs to be rotated when the small outer circle is detected in order to be fully observed. Manual detection is difficult and the detection efficiency is low. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides a small outer circle detection device for a fuel injection nozzle, which can facilitate the detection of small outer circle parts and improve the detection efficiency.

[0004] The specific technical scheme is as follows: A device for detecting a small outer circle of an injector nozzle comprises at least one detection component, the detection component comprises a positioning component, a clamping component, a clamping mechanism and a detection mechanism, the clamping component is arranged above the clamping mechanism, the positioning component is located below the clamping component, the clamping mechanism is connected to the driving mechanism, the driving mechanism drives the clamping mechanism to clamp the injector nozzle and then vertically places it on the positioning component, the injector nozzle is positioned by the clamping mechanism, the detection mechanism is arranged on the side of the positioning component, the detection mechanism comprises a detection camera, the detection camera faces the small outer circle position of the injector nozzle, the positioning component comprises a positioning seat, a driven wheel and a driver, the positioning seat is arranged below the clamping assembly, the positioning seat has a fan-shaped positioning surface for supporting the injector nozzle, a driven wheel is arranged below the positioning seat, the driven wheel is connected to the driving wheel of the driver through a transmission belt, and the driver drives the positioning seat to rotate.

[0005] In some embodiments, the clamping assembly includes a pin cylinder, a transmission mechanism, a spindle, a spindle spring and a pin. The pin is arranged in a cavity in the spindle and presses against the pin spring. The pin cylinder is connected to the spindle through the transmission mechanism to drive the spindle to move axially. The spindle spring is sleeved on the spindle.

[0006] In some embodiments, the transmission mechanism includes a pressing head and a needle roller thrust bearing, the telescopic rod of the ejector cylinder is connected to the pressing head, and the needle roller thrust bearing is arranged between the main shaft and the pressing head.

[0007] In some embodiments, a linear bearing is provided below the needle roller thrust bearing, and the main shaft passes through the linear bearing.

[0008] In some embodiments, a self-lubricating bushing is provided below the linear bearing, and the main shaft is inserted into the self-lubricating bushing.

[0009] In some embodiments, the spindle end is provided with an opening having an inverted cone surface, the ejector pin is inserted into the opening and is coaxially arranged with the spindle, the ejector pin end is inserted into the fuel injector, and the inverted cone surface presses against the large end surface of the fuel injector.

[0010] In some embodiments, the driving mechanism includes a lifting cylinder connected to the clamping mechanism.

[0011] In some embodiments, the driving mechanism includes a rotating arm, which is driven by a motor and has clamping mechanisms at both ends of the rotating arm.

[0012] In some embodiments, there are two groups of detection components, and the two groups of detection components are symmetrically arranged.

[0013] In some embodiments, the detection component is connected to an adjustment mechanism, the adjustment mechanism includes an adjustment block and an adjustment member, the adjustment block is connected to the detection component, and the adjustment member is threadedly connected to the adjustment block.

[0014] The technical effect of the utility model: the small outer circle detection device of the fuel injector of the utility model can stably position the fuel injector during detection, so that the fuel injector can be stably rotated for detection, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a fuel injection nozzle according to an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of a small outer circle detection device according to an embodiment of the utility model.

[0017] Figure 3 It is another schematic diagram of the small outer circle detection component of the embodiment of the utility model.

[0018] Figure 4 It is a cross-sectional view of the clamping assembly of the embodiment of the utility model.

[0019] Figure 5 This utility model Figure 4 Magnified view of part B.

[0020] Figure 6 It is a cross-sectional view of the positioning assembly of the embodiment of the utility model.

[0021] Figure 7 This utility model Figure 6 Magnified view of part C. DETAILED DESCRIPTION

[0022] The essential features and advantages of the present invention are further described below in conjunction with examples, but the present invention is not limited to the examples listed.

[0023] like Figures 1 to 7 As shown, a small outer circle detection device 4 of a fuel injector in this embodiment is used for detecting the small outer circle position of a fuel injector 10. The fuel injector 10 includes a large end face 101, a large outer circle 102, a shoulder face 103, a small outer circle 104 and a ball head face 105. The small outer circle detection device 4 of the fuel injector includes at least one detection assembly 40. The detection assembly 40 includes a positioning assembly 41, a clamping assembly 42, a clamping mechanism 43 and a detection mechanism. The clamping assembly 42 is arranged above the clamping mechanism 43, and the positioning assembly 41 is located below the clamping assembly 42. The clamping mechanism 43 is connected to the driving mechanism 45. The driving mechanism 45 drives the clamping mechanism 43 to clamp the fuel injector 10 and then vertically place it in the positioning assembly 41. The fuel injector 10 is positioned by the clamping assembly 42. The detection mechanism is arranged on the side of the positioning assembly 41. The detection mechanism includes a detection camera 44. The detection camera 44 faces the small outer circle 104 position of the fuel injector 10. The positioning assembly 41 includes a positioning seat 411, a driven wheel 413 and a driver 415. The positioning seat 411 is arranged below the clamping assembly 42. The positioning seat 411 has a fan-shaped positioning surface 412 for supporting the fuel injector. A driven wheel 413 is arranged below the positioning seat 411. The driven wheel 413 is connected to the driving wheel 416 of the driver 415 through a transmission belt 414. The driver 415 drives the positioning seat 411 to rotate. In the above technical scheme, the clamping mechanism 43 obtains the fuel injector from the conveying device 3 and places it on the positioning assembly 41. The fuel injector can be positioned by the clamping assembly 42 so that it can remain stable during the rotation process. The image of the small outer circle is obtained by the detection camera 44, and then identification and detection are performed. By setting the fan-shaped positioning surface 412, the fuel injector can be made more stable during the rotation process.

[0024] In this embodiment, the pressing assembly 42 includes an ejector cylinder 421, a transmission mechanism, a spindle 423, a spindle spring 424 and an ejector 425. The ejector 425 is arranged in a cavity in the spindle 423 and presses against the ejector spring 426. The ejector cylinder 421 is connected to the spindle 423 through the transmission mechanism to drive the spindle 423 to move axially. The spindle spring 424 is sleeved on the spindle 423. In the above technical solution, when the fuel injector is pressed, the ejector cylinder 421 is pressed downward, so that the spindle 423 moves downward, driving the ejector 425 to move downward against the fuel injector 10, so that the fuel injector 10 can be positioned on the positioning assembly 41.

[0025] In this embodiment, the transmission mechanism includes a pressure head 48 and a needle roller thrust bearing 49. The telescopic rod 422 of the ejector cylinder 421 is connected to the pressure head 448, and the needle roller thrust bearing 49 is arranged between the main shaft 423 and the pressure head 426. The pressure head 426 is driven by the telescopic rod 422 to make the main shaft move axially, and the pressure head 48 is connected to the main shaft in a floating manner, so that the main shaft can rotate relative to the pressure head 426. A linear bearing 47 is arranged below the needle roller thrust bearing 49, and the main shaft 423 is inserted into the linear bearing 47. A self-lubricating bushing 429 is arranged below the linear bearing 47, and the main shaft 423 is inserted into the self-lubricating bushing 429 to facilitate the movement of the main shaft. The end of the spindle 423 is provided with an opening 427, and the opening 427 has an inverted cone 428. The ejector pin 425 is inserted into the opening 427 and is coaxially arranged with the spindle 423. The end of the ejector pin 425 is inserted into the oil spray nozzle, and the inverted cone 428 presses against the large end face 101 of the oil spray nozzle. When the oil spray nozzle is positioned, the ejector pin 425 first presses against the oil spray nozzle. During the downward movement of the spindle, the inverted cone 428 of the opening 427 presses against the large cross-section peripheral side of the oil spray nozzle to tighten and center it. During the inspection, the oil spray nozzle and the spindle rotate synchronously.

[0026] In this embodiment, the driving mechanism 45 includes a lifting cylinder 451, which is connected to the clamping mechanism 43. The lifting cylinder 451 can drive the clamping mechanism 43 to rise and fall. The clamping mechanism 43 includes two clamping modules 431, and the materials can be clamped by the clamping modules 431. The driving mechanism 45 includes a rotating arm 46, which is driven by a motor 452. The two ends of the rotating arm 46 are respectively provided with clamping mechanisms 43, and the materials can be clamped alternately by the two clamping mechanisms 43. The detection assembly 40 has two groups, and the two groups of detection assemblies 40 are symmetrically arranged, so that two fuel injectors can be detected at the same time. The detection assembly 40 is connected to the adjustment mechanism 50, and the adjustment mechanism 50 includes an adjustment block 501 and an adjustment member 502. The adjustment block 501 is connected to the detection assembly 40, and the adjustment member 502 is threadedly connected to the adjustment block 501. By rotating the adjustment member 502, the adjustment block 501 can be driven to slide, thereby adjusting the position of the detection assembly 40.

[0027] The small outer circle detection device of the fuel injector in the present embodiment can stably position the fuel injector during detection, so that the fuel injector can be stably rotated for detection, thereby improving detection efficiency.

[0028] It should be pointed out that the above preferred embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A small outer circle detection device for a fuel injection nozzle, characterized in that: The invention comprises at least one detection component, which comprises a positioning component, a clamping component, a clamping mechanism and a detection mechanism. The clamping component is arranged above the clamping mechanism, and the positioning component is located below the clamping component. The clamping mechanism is connected to the driving mechanism, and the driving mechanism drives the clamping mechanism to clamp the fuel injector and then vertically place it in the positioning component. The fuel injector is positioned by the clamping mechanism. The detection mechanism is arranged on the side of the positioning component, and the detection mechanism comprises a detection camera, which faces the small outer circle position of the fuel injector. The positioning component comprises a positioning seat, a driven wheel and a driver. The positioning seat is arranged below the clamping assembly, and the positioning seat has a fan-shaped positioning surface for supporting the fuel injector. A driven wheel is arranged below the positioning seat, and the driven wheel is connected to the driving wheel of the driver through a transmission belt, and the driver drives the positioning seat to rotate.

2. The small outer circle detection device for fuel injection nozzle according to claim 1 is characterized in that: The clamping assembly includes an ejector cylinder, a transmission mechanism, a spindle, a spindle spring and an ejector. The ejector is arranged in a cavity in the spindle and presses against the ejector spring. The ejector cylinder is connected to the spindle through the transmission mechanism to drive the spindle to move axially. The spindle spring is sleeved on the spindle.

3. The small outer circle detection device for fuel injection nozzle according to claim 2 is characterized in that: The transmission mechanism comprises a pressing head and a needle roller thrust bearing, the telescopic rod of the ejector cylinder is connected with the pressing head, and the needle roller thrust bearing is arranged between the main shaft and the pressing head.

4. The small outer circle detection device for fuel injection nozzle according to claim 3 is characterized in that: A linear bearing is arranged below the needle roller thrust bearing, and the main shaft passes through the linear bearing.

5. The small outer circle detection device for fuel injection nozzle according to claim 4, characterized in that: A self-lubricating bushing is arranged below the linear bearing, and the main shaft passes through the self-lubricating bushing.

6. The small outer circle detection device for fuel injection nozzle according to claim 5, characterized in that: The main shaft end is provided with an opening having an inverted cone surface, the ejector pin is inserted into the opening and is coaxially arranged with the main shaft, the ejector pin end is inserted into the fuel injection nozzle, and the inverted cone surface presses against the large end surface of the fuel injection nozzle.

7. The small outer circle detection device for fuel injection nozzle according to claim 6, characterized in that: The driving mechanism comprises a lifting cylinder, and the lifting cylinder is connected to the clamping claw mechanism.

8. The small outer circle detection device for fuel injection nozzle according to claim 7, characterized in that: The driving mechanism comprises a rotating arm, which is driven by a motor and has clamping mechanisms at both ends.

9. The small outer circle detection device for fuel injection nozzle according to claim 8, characterized in that: There are two groups of detection components, and the two groups of detection components are symmetrically arranged.

10. The fuel injection nozzle small outer circle detection device according to claim 9, characterized in that: The detection assembly is connected to the adjustment mechanism, the adjustment mechanism comprises an adjustment block and an adjustment piece, the adjustment block is connected to the detection assembly, and the adjustment piece is threadedly connected to the adjustment block.

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