Efficient detection tool for oil injection ring

Abstract

The utility model discloses an oil injection ring high-efficiency detection tool, comprising a workbench, the workbench is provided with a clamping module for radial clamping, the clamping module is provided with an air exhaust structure and a pressure gauge corresponding to each oil injection hole, the outside of the clamping module is correspondingly provided with a plugging module, and the inner wall of the plugging module is provided with an avoiding groove; through the above mode, the detection tool provided by the utility model is not only high in detection efficiency and capable of accurately identifying the state that a certain hole is completely blocked or partially blocked, but also low in development cost and capable of efficiently cooperating with product quality inspection of a production line.

Description

Technical Field

[0001] This utility model relates to the field of product testing technology, and in particular to a high-efficiency testing fixture for oil injection rings. Background Technology

[0002] Appendix Figure 1 This is an electric drive fuel injection ring for an electric vehicle. Its main structure is a cylindrical ring-shaped plastic. The upper and lower ends are respectively equipped with an internal sealing ring and an external sealing ring. The main structure in the middle is surrounded by fuel injection holes. The fuel injection holes are inclined and have a draft angle, forming oblique conical holes. They are asymmetrically distributed on the side wall of the fuel injection ring, and the spacing between the holes on the left and right and the top and bottom is different, making the inspection difficult.

[0003] For the testing of the aforementioned products, the industry currently employs various quality inspection methods, such as:

[0004] 1. Visual inspection using the light transmission method: Although this method can detect hole abnormalities, there is a risk of missed detections, and employees are prone to visual fatigue from prolonged visual inspection.

[0005] 2. Pin-type Go-no-go fixture inspection: Due to the special structure of this product, this inspection method requires multiple sets of fixtures and multiple workstations to complete the inspection of the entire product, which is not economical and also has the quality risk of missed inspections.

[0006] 3. CCD Inspection: Due to the special structure of this product, it requires multi-station and multi-lens inspection, or the cooperation of a robot with four or more axes to hold the product and rotate it at multiple angles to complete the inspection of the entire product. The inspection development cost is large and it occupies a lot of space. Utility Model Content

[0007] The main technical problem solved by this utility model is to optimize and transform the existing conventional airtightness testing method and develop a new testing fixture that is not only highly efficient in testing but also low in development cost, and can be effectively integrated with the quality inspection of the production line.

[0008] To solve the above-mentioned technical problems, the present invention provides a high-efficiency testing fixture for oil injection rings, including a worktable. A radial clamping module is provided on the worktable. The clamping module is provided with an air extraction structure and a pressure gauge for each oil injection hole. A sealing module is provided on the outside of the clamping module. An avoidance groove is provided on the inner wall of the sealing module.

[0009] Preferably, the clamping module includes a clamping cylinder, a slide is provided above the clamping cylinder, and a clamping ring is correspondingly provided on the slide.

[0010] Preferably, there are several clamping cylinders, which are evenly distributed circumferentially, and the clamping cylinders, slides and clamping rings correspond one-to-one.

[0011] Preferably, the clamping ring is made of POM material.

[0012] Preferably, the workbench is equipped with a material feeding sensor.

[0013] Preferably, the air extraction structure includes an air extraction nozzle, and each air extraction nozzle is connected to a pressure gauge via an air extraction pipe.

[0014] Preferably, the sealing module includes a plurality of sealing cylinders, and each sealing cylinder is provided with a sealing ring.

[0015] Preferably, the relief groove is recessed in the inner wall of the sealing ring, and the sealing ring is made of soft silicone.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes the unique structure of the injection holes in the injection ring to conduct tests in separate, independent cavities. This allows for precise identification of whether a hole is completely or partially blocked. It complements the overall layout of automated assembly lines, effectively reducing testing cycle time and ensuring that the operation times of each workstation on the automated assembly line are as similar as possible. This testing fixture is not only simple and ingenious in structure but also has low implementation costs and strong practicality in production, making it highly valuable for technology promotion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an electric drive fuel injection ring for an electric vehicle according to this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a high-efficiency detection tool for an oil injection ring according to this utility model;

[0020] Figure 3 This is a partial schematic diagram of the present invention, used to illustrate the specific structure of the clamping module and the sealing module;

[0021] The components in the attached diagram are labeled as follows:

[0022] 1. Workbench; 2. Clamping module; 21. Clamping cylinder; 22. Slide table; 23. Clamping ring; 3. Oil injection hole; 4. Sealing module; 41. Sealing cylinder; 42. Sealing ring; 5. Clearance groove; 6. Air extraction nozzle. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0024] Example:

[0025] like Figure 1 and Figure 2 As shown, a high-efficiency testing fixture for an oil injection ring is provided. The oil injection ring product is circumferentially positioned by a front workstation. Because the oil injection holes on the side wall of this electric vehicle drive oil injection ring are not symmetrically arranged and the hole spacing is different, the front workstation will identify the positioning mark of the product to be tested to ensure that the position transferred from the front workstation to this testing fixture is fixed. The transfer mechanism transfers the positioned oil injection ring to the worktable 1 of this testing fixture. The worktable 1 is equipped with a feeding sensor, which triggers the subsequent clamping and sealing operations.

[0026] like Figure 2 and Figure 3 As shown, a clamping module 2 is provided on the workbench 1. The clamping module 2 is for radial clamping. The specific structural design is as follows: the clamping module 2 includes a number of clamping cylinders 21, which are evenly distributed circumferentially to ensure that the radial pushing force is uniform. This embodiment shows four clamping cylinders. A slide 22 is provided above each clamping cylinder 21, and a clamping ring 23 is provided above each slide. That is, the clamping cylinders 21, slides 22 and clamping rings 23 are in a one-to-one correspondence. At the same time, the clamping rings 23 are made of POM material to ensure stable clamping and minimal wear on the product. The oil injection ring is radially clamped by the above-mentioned clamping module 2.

[0027] like Figure 2 and Figure 3 As shown, a sealing module 4 is correspondingly provided on the outside of the clamping module 2. The sealing module 4 includes sealing cylinders 41, and several sealing cylinders 41 are also provided to ensure the uniformity of circumferential thrust. This embodiment shows four sealing cylinders 41. Each sealing cylinder 41 is provided with a sealing ring 42. The sealing ring 42 does not block the hole in the superficial sense, but is designed with reverse thinking. Specifically, the inner wall of the sealing ring 42 is recessed and has a relief groove 5. That is, the sealing ring 42 only blocks the annular side wall and does not block the oil injection hole. Moreover, the sealing ring 42 is made of soft silicone material to provide flexible sealing. Furthermore, the internal clamping module 2 is provided with an air extraction structure corresponding to each oil injection hole 3, specifically an air extraction nozzle 6. Each air extraction nozzle 6 is connected to a pressure gauge through an air extraction pipe.

[0028] Based on the above design, the detection design principle of this utility model is as follows: the suction nozzle 6 evacuates air from the injection hole 3 of the injection ring product, while the pressure gauge outputs instantaneous pressure. Each suction nozzle 6 corresponds to one pressure gauge. The evacuation time is 2-3 seconds. When the evacuation pressure quickly becomes negative, it indicates that the injection hole is blocked; if the evacuation pressure is 0, it indicates that the injection hole is unobstructed; if the evacuation pressure is in the middle range, it indicates that the hole is partially blocked. The inspector only needs to observe the pressure gauge value to determine the condition of the injection hole in the injection ring, which simplifies the existing inspection process and is very convenient.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-efficiency testing fixture for an injection ring, comprising a worktable (1), characterized in that: The workbench (1) is provided with a radial clamping module (2). The clamping module (2) is provided with an air extraction structure and a pressure gauge for each oil injection hole (3). A sealing module (4) is provided on the outside of the clamping module (2). A clearance groove (5) is provided on the inner wall of the sealing module (4).

2. The high-efficiency testing fixture for the injection ring according to claim 1, characterized in that: The clamping module (2) includes a clamping cylinder (21), and a slide (22) is provided above the clamping cylinder (21), and a clamping ring (23) is correspondingly provided on the slide (22).

3. The high-efficiency testing fixture for the injection ring according to claim 2, characterized in that: There are several clamping cylinders (21) and they are evenly distributed in the circumference. The clamping cylinders (21), the slide (22) and the clamping ring (23) correspond one to one.

4. The high-efficiency testing fixture for the injection ring according to claim 2, characterized in that: The clamping ring (23) is made of POM material.

5. The high-efficiency testing fixture for the injection ring according to claim 1, characterized in that: The workbench (1) is equipped with a feeding sensor.

6. The high-efficiency testing fixture for the injection ring according to claim 1, characterized in that: The air extraction structure includes an air extraction nozzle (6), and each of the air extraction nozzles (6) is connected to a pressure gauge via an air extraction pipe.

7. The high-efficiency testing fixture for the injection ring according to claim 1, characterized in that: The sealing module (4) includes a plurality of sealing cylinders (41), and each sealing cylinder (41) is provided with a sealing ring (42).

8. The high-efficiency testing fixture for the injection ring according to claim 7, characterized in that: The relief groove (5) is recessed into the inner wall of the sealing ring (42), and the sealing ring (42) is made of soft silicone.

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