Oil sprayer seat inspection jig with R angle

Abstract

The utility model relates to an inspection device for an oil injector seat in an oil rail, in particular to an inspection jig for an oil injector seat with an R angle, which is characterized by comprising a bottom plate, a workpiece fixing unit, a workpiece detection unit and a baffle plate. The workpiece fixing unit, the workpiece detection unit and the baffle are located on the same straight line and are all fixed to the bottom plate. The workpiece fixing unit is located between the workpiece detection unit and the baffle. According to the utility model, after a product is placed on the workpiece fixing unit with the error-proofing module, the laser pen is utilized to emit red light spots which are parallelly emitted into the R angle of the oil sprayer seat for detection, so that the working efficiency is high, the judgment is accurate, the production cost is reduced, and the product quality and the detection efficiency are improved. Meanwhile, in the utility model, the positions of the fixing interfaces on different bottom plates are in one-to-one correspondence with the products, so that the relative position between the workpiece fixing unit and the workpiece detection unit is ensured, different oil sprayer seats can be accurately positioned in the detection process, and misjudgment is avoided.

Description

Technical Field

[0001] The utility model relates to a fuel injector seat inspection device in a fuel rail, in particular to a fuel injector seat inspection jig with an R angle. Background Art

[0002] China's automobile industry has ushered in its rapid development. The number of recalls due to safety accidents in the automobile industry is increasing day by day, and consumers' requirements for product production quality and safety are also advancing with the times. As a safety part of the automobile engine, the fuel rail is the first to be affected by quality requirements.

[0003] The hybrid low-pressure fuel rail injector seat has an R angle that fits the fuel rail main pipe. There are currently only two ways to inspect the R angle of the hybrid low-pressure fuel rail injector seat: 1. Visual R angle inspection by appearance. This inspection is extremely unreliable and cannot visually identify product defects 100%, causing serious interference to subsequent work and product quality scrapping. 2. Through the contoured R angle inspection fixture, manually perform 100% pass-stop detection fixture inspection. This inspection method is extremely inefficient and cannot meet the market demand for hybrid low-pressure fuel rail products. Both of the above inspection methods do not meet the existing industry quality requirements and cost requirements. Utility Model Content

[0004] The purpose of the utility model is to provide an injector seat inspection fixture with an R angle, which is used to quickly detect that the R angle distortion of a hybrid low-pressure fuel rail product does not meet the process requirements, and the R angle of the hybrid low-pressure fuel rail product cannot fit the size of the main pipe, thereby solving the problems of the inability to 100% identify defects and low detection efficiency in the prior art.

[0005] The utility model provides an injector seat inspection jig with an R angle, which is characterized in that it comprises a base plate, a workpiece fixing unit, a workpiece detection unit and a baffle; the workpiece fixing unit, the workpiece detection unit and the baffle are in a straight line and are all fixed on the base plate; the workpiece fixing unit is located between the workpiece detection unit and the baffle.

[0006] Furthermore, a first fixing interface and a second fixing interface are provided on the base plate; the distance between the first fixing interface and the second fixing interface corresponds to the size of the injector seat to be tested; the first fixing interface is connected to the workpiece fixing unit; and the second fixing interface is connected to the workpiece detection unit.

[0007] Furthermore, the base plates include a plurality of types; and the distances between the first fixing interface and the second fixing interface on different base plates are different.

[0008] Furthermore, the workpiece fixing unit comprises a fixing base and an error-proofing module; the bottom end of the fixing base is connected to the base plate; the error-proofing module is mounted and fixed on the fixing base; and the error-proofing module is connected to the injector seat to be tested.

[0009] Furthermore, the error-proofing module comprises an outer diameter profiling block and a locating pin; the outer diameter profiling block matches the outer diameter of the injector seat under test and is installed on the top of the fixed base; the outer diameter of the locating pin matches the inner diameter of the injector seat under test; a blind hole is provided at the top of the fixed base, and the locating pin is inserted and fixed in the blind hole; the diameter of the blind hole matches the outer diameter of the locating pin.

[0010] Furthermore, the workpiece detection unit includes a measuring base, a fastening module and a measuring module; the measuring base is connected to the base plate; the measuring module is connected to the measuring base; the fastening module is simultaneously connected to the measuring base and the measuring module; and the measuring module faces the baffle.

[0011] Furthermore, a horizontal through hole is provided on the measuring base; the measuring module passes through the horizontal through hole and is installed on the measuring base.

[0012] Furthermore, the measuring module is a laser pen; the emitting end of the laser pen faces the baffle.

[0013] Furthermore, the inner shape of the horizontal through hole is a triangle; and the axial outer edge of the laser pen is a triangle matching the horizontal through hole.

[0014] Furthermore, the fastening module is a fixing bolt; the fastening bolt passes through the threaded hole of the measuring base from top to bottom and fits on the measuring module.

[0015] The utility model is a fuel injector seat inspection fixture with R angle, and its notable features are:

[0016] 1. The utility model installs the product on a workpiece fixing unit with an error-proofing module, and then uses a laser pen to emit a red light spot parallel to the R angle of the injector seat to perform R angle distortion detection. The utility model has high working efficiency and accurate judgment, reduces production scrap costs, and improves product quality and inspection efficiency.

[0017] 2. In the present invention, different injector seats correspond to different base plates. On these base plates, the position of the fixing seat corresponds to the product one by one, ensuring the relative position between the workpiece fixing unit and the workpiece detection unit, ensuring the coordination between them, and ensuring that different injector seats can be accurately positioned during the inspection process to avoid misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the utility model of a fuel injector seat inspection jig with an R angle combined with product measurement;

[0019] Figure 2 This is a schematic diagram on the left of a preferred embodiment of the utility model of a fuel injector seat inspection fixture with an R angle, which is planed when measuring the product.

[0020] Among them, 1-baffle, 2-light spot, 3-outer diameter profiling block, 4-fixed base, 5-bottom plate, 6-fixed bolt, 7-measuring base, 8-laser pen, 9-injector seat, 10-positioning pin. DETAILED DESCRIPTION

[0021] The specific embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0022] See also Figure 1 and Figure 2 The utility model discloses a fuel injector seat inspection jig with an R angle, a preferred embodiment of which is composed of a base plate 5, a workpiece fixing unit, a workpiece detection unit and a baffle 1, and is used to detect the R angle of the fuel injector seat 9 to be tested.

[0023] A first fixing interface and a second fixing interface are provided on the base plate 5. The first fixing interface is used to connect to the workpiece fixing unit, and the second fixing interface is used to connect to the workpiece detection unit. The distance between the first fixing interface and the second fixing interface corresponds to the size of the injector seat 9 to be tested: the R angle size of the injector seat 9 of different models is different, and the distance between the workpiece fixing unit and the workpiece detection unit needs to match the R angle size. Therefore, the base plate 5 has multiple types, and their sizes are different. In particular, the distance between the first fixing interface and the second fixing interface on different base plates 5 is different. Because the principle of this test is to use the laser emitted by the workpiece detection unit to pass through the injector seat 9 to be tested and project it onto the baffle 1, it is required that when the workpiece fixing unit, the workpiece detection unit and the baffle 1 are fixed on the base plate 5, they are all on the same straight line, and the workpiece fixing unit is located between the workpiece detection unit and the baffle 1.

[0024] The workpiece fixing unit is used to fix the injector seat 9 to be tested, and is composed of a fixing base 4, an outer diameter profiling block 3 and a positioning pin 10. The outer diameter profiling block 3 and the positioning pin 10 are used as error-proofing modules to ensure that the injector seat 9 to be tested is placed in the correct direction and angle during the measurement process. The fixing base 4 is docked with the first fixing interface and connected to the bottom plate 5 using the first fixing interface.

[0025] The outer diameter profiling block 3 is installed on the top of the fixed base 4 to adapt to the external shape of the injector seat 9 to be tested, so as to ensure that the angle of the injector seat 9 to be tested is determined after being placed, and meets the requirements of laser measurement. A blind hole is set in the center of the top surface of the fixed base 4. One end of the positioning pin 10 is inserted into the blind hole and thus vertically fixed to the fixed base 4, and its other end extends upward. When the injector seat 9 is sleeved on the positioning pin 10, it can rotate around the positioning pin 10.

[0026] The outer diameter of the positioning pin 10 matches the inner diameter of the injector seat 9 to be measured, which ensures that the position of the injector seat 9 to be measured is fixed after being placed, meeting the requirements of laser measurement. The outer diameter of the positioning pin 10 is determined by the inner diameter of the injector seat of the corresponding model, and the diameter of the blind hole is determined by the outer diameter of the positioning pin 10.

[0027] The workpiece detection unit includes a measuring base 7, a fixing bolt 6 as a fastening module, and a laser pen 8 as a measuring module. The measuring base 7 is docked with the second fixing interface and connected to the bottom plate 5 by the second fixing interface. A triangular horizontal through hole is provided on the measuring base 7. The axial outer edge of the laser pen 8 is also a triangle, matching the triangle of the horizontal through hole.

[0028] The laser pen 8 is inserted along the direction of the horizontal through hole on the measuring base 7, and then the fixing bolt 6 passes through the threaded hole on the measuring base 7 from top to bottom and fits on the upper part of the laser pen 8. When the fixing bolt 6 is tightened, the laser pen 8 is fixed and cannot move horizontally. At the same time, the triangular shape of the laser pen 8 prevents it from rotating or moving up, down, left, and right, thereby ensuring stability during the measurement process.

[0029] The height of the laser pen 8 installed on the measuring base 7 matches the R angle height of the injector seat 9 to ensure that the measuring position is the lowest point of the R angle. The emitting end of the laser pen 8 faces the baffle 1. The laser emitted from the laser pen 8 passes through the injector seat 9 to be measured through a path tangent to the R angle of the injector seat 9 to be measured, and is finally projected on the baffle 1. The quality of the R angle can be determined by observing the shape of the light spot 2 on the baffle 1.

[0030] A method for measuring the R angle using a preferred embodiment of the fuel injector seat inspection jig having an R angle of the utility model comprises the following steps:

[0031] Step S1, according to the model of the injector seat 9 to be tested, select a suitable base plate 5, and connect the workpiece fixing unit and the workpiece detection unit to the first fixing interface and the second fixing interface respectively.

[0032] Step S2, sleeve the injector seat 9 onto the positioning pin 10.

[0033] Step S3, rotating the injector seat 9 so that its shape matches the outer diameter profiling plate 3, thereby fixing it on the outer diameter profiling plate 3.

[0034] Step S4 , using the laser pen 8 to emit laser light, directly passing through the highest point of the R angle center of the injector seat 9 , and forming a light spot 2 on the baffle 1 .

[0035] Step S5, observe the R angle position of the injector seat 9, and determine whether there is residual light irradiating the highest point of the R angle of the product injector seat. If there is, the product R angle height is unqualified. If there is no light spot 2 irradiating the highest point of the R angle, enter step S6 to continue testing.

[0036] Step S6, observing whether the light spot 2 projected on the baffle 1 is distorted or not, if it is circular, it is qualified, otherwise, it is unqualified.

[0037] This method can be used to complete accurate and rapid measurements, making it possible to conduct 100% rapid testing of products and improve product quality and production efficiency.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application scope of the present invention should be within the technical scope of the present invention.

Claims

1. A fuel injector seat inspection fixture with an R angle, characterized in that: It comprises a base plate, a workpiece fixing unit, a workpiece detection unit and a baffle; the workpiece fixing unit, the workpiece detection unit and the baffle are in a straight line and are all fixed on the base plate; the workpiece fixing unit is located between the workpiece detection unit and the baffle.

2. The fuel injector seat inspection jig with R angle as claimed in claim 1, characterized in that: A first fixing interface and a second fixing interface are arranged on the bottom plate; a distance between the first fixing interface and the second fixing interface corresponds to a size of the injector seat to be tested; the first fixing interface is connected to the workpiece fixing unit; and the second fixing interface is connected to the workpiece detection unit.

3. The fuel injector seat inspection jig with R angle as claimed in claim 2, characterized in that: The base plates include a plurality of types; the distances between the first fixing interface and the second fixing interface on different base plates are different.

4. The fuel injector seat inspection jig with R angle as claimed in claim 1, characterized in that: The workpiece fixing unit comprises a fixing base and an error proofing module; the bottom end of the fixing base is connected to the base plate; the error proofing module is mounted and fixed on the fixing base; and the error proofing module is connected to the injector seat to be tested.

5. The fuel injector seat inspection jig with R angle as claimed in claim 4, characterized in that: The error-proofing module comprises an outer diameter profiling block and a locating pin; the outer diameter profiling block matches the outer diameter of the injector seat to be tested and is installed on the top of the fixed base; the outer diameter of the locating pin matches the inner diameter of the injector seat to be tested; a blind hole is provided at the top of the fixed base, the locating pin is inserted into and fixed in the blind hole; the diameter of the blind hole matches the outer diameter of the locating pin.

6. The fuel injector seat inspection jig with R angle as claimed in claim 1, characterized in that: The workpiece detection unit comprises a measuring base, a fastening module and a measuring module; the measuring base is connected to the base plate; the measuring module is connected to the measuring base; the fastening module is simultaneously connected to the measuring base and the measuring module; the measuring module faces the baffle.

7. The fuel injector seat inspection jig with R angle as claimed in claim 6, characterized in that: A horizontal through hole is arranged on the measuring base; the measuring module passes through the horizontal through hole and is installed on the measuring base.

8. The fuel injector seat inspection jig with R angle as claimed in claim 7, characterized in that: The measuring module is a laser pen; the emitting end of the laser pen faces the baffle.

9. The fuel injector seat inspection jig with R angle as claimed in claim 8, characterized in that: The inner shape of the horizontal through hole is a triangle; the axial outer edge of the laser pen is a triangle matching the horizontal through hole.

10. The fuel injector seat inspection jig with R angle as claimed in claim 6, characterized in that: The fastening module is a fixing bolt; the fixing bolt passes through the threaded hole of the measuring base from top to bottom and fits on the measuring module.

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