Analog EGR pipe end plate assembly press-in force detection device

Abstract

The utility model discloses a kind of analog EGR pipe type end plate assembly press-in force detection devices, including product fixed support and the axial cylinder and pressure sensor separately arranged at the both ends of product fixed support, the telescopic end of axial cylinder is fixedly connected with end plate fixed module, end plate fixed module can clamp or loosen end plate.In the utility model, by setting axial cylinder provides axial press-in force, by product fixed support can be fixed to product, by the setting of pressure sensor can test press-in force when assembling, to test the optimal value of threshold interval;End plate fixed module can clamp or loosen end plate, when end plate and product are not assembled, end plate can be fixed, after end plate and product are assembled, the limiting of end plate is cancelled, can avoid manual disassembly installation in prior art, simplify assembly process, improve simulation test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing technology, and more specifically to a device for testing the pressing force of simulated EGR pipe end plate assembly. Background Technology

[0002] Currently, there are the following technical challenges in EGR endplate indentation force detection:

[0003] High dependence on manual labor: Traditional methods require manual operation of the press, which is prone to subjective judgment errors and is labor-intensive;

[0004] Low testing efficiency: Multiple parameter adjustments are required for a single test, which cannot meet the production line cycle time requirements (actual test time for a single piece ≥ 45 seconds);

[0005] High equipment cost: High-precision equipment such as coordinate measuring machines are expensive to inspect (≥500,000 RMB per unit) and cannot achieve rapid online inspection. Therefore, a device that can simulate the pressure force during end plate assembly is needed to test the optimal value of the threshold range in the technical standard. Utility Model Content

[0006] The technical problem to be solved by this utility model is how to provide a testing device that can simulate the pressure during end plate assembly and improve the efficiency of simulation testing.

[0007] This utility model solves the above-mentioned technical problems through the following technical means: a device for detecting the pressure of assembling end plates of simulated EGR pipes, including a product fixing bracket and an axial cylinder and a pressure sensor respectively disposed at both ends of the product fixing bracket. The telescopic end of the axial cylinder is fixedly connected to an end plate fixing module. The end plate fixing module can clamp or loosen the end plate. The end plate fixing module includes a fixing shell, a fixing seat, and a clamping block. The fixing seat is elastically connected to the fixing shell by a spring. Both ends of the fixing seat extending out of the fixing shell are provided with clamping blocks. One end of the clamping block extends to the outside of the plane of the fixing shell opposite to the plane where the axial cylinder is located.

[0008] As a preferred technical solution, the fixed housing includes an end plate positioning block and a positioning seat. One end of the positioning seat has an opening, and a through hole is formed on the positioning seat, which passes through its top and bottom. The end plate positioning block and the positioning seat are enclosed and fixed to form a fixed housing. The inner wall of the through hole is elastically connected to the fixed seat by a spring.

[0009] As a preferred technical solution, the clamping block has a T-shaped structure. The vertical section of the clamping block is rotatably connected to the fixed base, and the horizontal section of the clamping block, away from the pressure sensor, is elastically connected to the clamping block via a spring.

[0010] As a preferred technical solution, one end of the fixed housing is snapped and fixed to the end plate, and the end of the end plate connected to the fixed housing is provided with a groove that matches the end of the fixed housing.

[0011] As a preferred technical solution, a pneumatic clamping assembly is also included. The pneumatic clamping assembly includes a vertical clamping cylinder and a clamping bracket connected to the telescopic end of the vertical clamping cylinder. The vertical clamping cylinder can drive the clamping bracket to move toward or away from the clamping bracket.

[0012] As a preferred technical solution, the base plate is also included, and the product fixing bracket, axial cylinder, and pressure sensor are all fixed on the top of the base plate.

[0013] As a preferred technical solution, the pressure sensor is fixedly connected to the top of the base plate via end fixing seat one, and the pressure sensor is fixedly connected to the vertical connecting surface of end fixing seat one. The axial cylinder is fixedly connected to the top of the base plate via end fixing seat two.

[0014] As a preferred technical solution, the end plate fixing module is slidably connected to the base plate through a slide rail assembly. The slide rail assembly includes a slide rail and a slide seat that are slidably connected. The slide seat is fixedly connected to the end plate fixing module, and the slide rail is fixedly connected to the base plate.

[0015] As a preferred technical solution, the end plate fixing module is detachably fixed to the telescopic end of the axial cylinder by bolts.

[0016] As a preferred technical solution, the product fixing bracket, axial cylinder, pressure sensor, and end plate fixing module are coaxial.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) In this utility model, an axial cylinder is provided to provide axial pressing force, the product can be fixed by the product fixing bracket, and the pressing force during assembly can be tested by the setting of the pressure sensor, thereby testing the optimal value of the threshold range; the end plate fixing module can clamp or loosen the end plate, fix the end plate when it is not assembled with the product, and release the limit on the end plate after it is assembled with the product, which can avoid manual disassembly and installation in the prior art, simplify the assembly process, and improve the efficiency of simulation testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure provided in Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the end plate fixing module structure provided in Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of the EGR tube housing assembly end plate structure provided in Embodiment 1 of this utility model;

[0022] Reference numerals: 1. Axial cylinder; 2. Product fixing bracket; 3. End plate fixing module; 4. Pressure sensor; 5. Air source controller; 6. Positioning seat; 7. Clamping block; 8. Fixing seat; 9. End plate positioning block; 10. EGR pipe housing; 11. End plate; 12. Pneumatic clamping assembly; 121. Vertical clamping cylinder; 122. Clamping bracket; 13. End fixing seat one; 14. End fixing seat two; 15. Slide rail assembly; 151. Slide rail; 152. Slide seat; 16. Spring one. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1

[0025] See Figure 1 A device for detecting the pressing force of an EGR pipe end plate assembly includes an axial cylinder 1, a product fixing bracket 2, an end plate fixing module 3, a pressure sensor 4, an air source controller 5, a pneumatic clamping assembly 12, an end fixing seat 13, and an end fixing seat 2 14. The axial cylinder 1, the product fixing bracket 2, the end plate fixing module 3, the pressure sensor 4, the end fixing seat 13, and the end fixing seat 2 14 are coaxial. The end fixing seat 13 and the end fixing seat 2 14 are both L-shaped supports with the same structure but opposite orientations. The axial cylinder 1 is fixedly connected to the vertical support surface of the end fixing seat 2 14. The telescopic end of the axial cylinder 1 is fixedly connected to the end plate fixing module 3. The end plate fixing module 3 can fix the end plate 11 and also release the fixation of the end plate 11.

[0026] The product fixing bracket 2 is used to support the product circumferentially except for the top surface. In this embodiment, the product is an EGR tube housing 10. The pneumatic clamping assembly 12 is fixed on the top of the product. The pneumatic clamping assembly 12 includes a vertical clamping cylinder 121 and a clamping bracket 122. The extension end of the vertical clamping cylinder 121 is fixedly connected to the clamping bracket 122. The clamping bracket 122 is used to clamp the top of the product. The product fixing bracket 2 and the clamping bracket 122 of the pneumatic clamping assembly 12 form a test area.

[0027] The product fixing bracket 2 is provided with an end fixing seat 13 at one end away from the axial cylinder 1. A pressure sensor 4 is fixedly connected to the vertical support surface of the end fixing seat 13. After the EGR tube housing 10 is fixed in the area to be tested, one end is attached to the pressure sensor 4. The product fixing brackets 2 are set in pairs. In this embodiment, two product fixing brackets 2 are provided, and both product fixing brackets 2 are set along the axial direction of the EGR tube housing 10.

[0028] When the telescopic end of the axial cylinder 1 moves toward one end of the EGR pipe housing 10, it drives the end plate 11 on the end plate fixing module 3 to move toward the EGR pipe housing 10. When the EGR pipe housing 10 is fixed to the end plate 11, the pressure sensor 4 can detect the pressure when the end plate 11 is assembled. After the EGR pipe housing 10 is fixed to the end plate 11, the end plate fixing module 3 releases the fixation of the end plate 11, and the axial cylinder 1 returns to its original position.

[0029] See Figure 2 The end plate fixing module 3 includes a positioning seat 6, a clamping block 7, a fixing seat 8, and an end plate positioning block 9. The positioning seat 6 has an opening at one end and a through hole extending from the top to the bottom. A notch is formed at the opening end of the positioning seat 6. The end plate positioning block 9 is fixed to the positioning seat 6 to form a fixed housing. The fixing seat 8 is elastically connected to the through hole by a spring-16. One end of the spring-16 abuts against the inner wall of the positioning seat 6, and the other end abuts against the fixing seat 8. Alternatively, one end of the spring-16 can be fixedly connected to the inner wall of the positioning seat 6, and the other end to the fixing seat 8. The fixed base 8 is fixedly connected, and the spring 16 is normally in the stretched state. The top and bottom of the fixed base 8 are rotatably connected to the T-shaped pressing block 7 through the pin. The pressing block 7 includes a horizontal section and a vertical section. The vertical section is fixedly connected to the middle of the horizontal section. Of course, the horizontal section can also be integrally formed with the vertical section. One end of the horizontal section extends out of the plane where the left end of the fixed base 8 is located, and the end of this end is a smooth curved surface. The other end of the horizontal section is elastically connected to the top or bottom of the fixed base 8 through the spring 2. The spring 2 is normally in the stretched state.

[0030] When the axial cylinder 1 drives the end plate fixing module 3 to move toward the EGR pipe housing 10 and contact the EGR pipe housing 10, the end plate 11 is engaged with the EGR pipe housing 10. The clamping block 7 is subjected to the reaction force of the axial cylinder 1. The clamping block 7 overcomes the elastic force of the spring 16 and moves toward the positioning seat 6. At this time, the end of the clamping block 7 moves synchronously with the clamping block 7. When it moves to the end plate positioning block 9, the limitation on the end plate 11 is released. At the same time, under the elastic force of the spring 2, the clamping block 7 rotates slightly counterclockwise relative to the fixing seat 8 to realize the reset of the clamping block 7. Then the axial cylinder 1 retracts to realize the reset of the end plate fixing module 3.

[0031] It should be noted that one end of the end plate 11 is adapted to the EGR pipe housing 10, and the other end is adapted to the end plate positioning block 9, and the end adapted to the end plate positioning block 9 is concave.

[0032] See Figure 1 The axial cylinder 1, product fixing bracket 2, end plate fixing module 3, pressure sensor 4, air source controller 5, pneumatic clamping assembly 12, end fixing seat one 13, and end fixing seat two 14 are all fixed on the base plate. The product fixing bracket 2 and pneumatic clamping assembly 12 are both fixedly connected to the top of the connecting plate one, and are fixedly connected to the top of the base plate through the connecting plate one. The pressure sensor 4 is fixedly connected to the base plate through end fixing seat one 13, and the axial cylinder 1 is fixedly connected to the base plate through end fixing seat two 14.

[0033] To ensure the feeding accuracy of the end plate fixing module 3, the end plate fixing module 3 is slidably supported by the slide rail assembly 15. The slide rail assembly 15 includes at least one slide rail 151 and a slide seat 152 that slidably engages with the slide rail 151. In this embodiment, to improve the stability of the slide seat 152, two slide rails 151 that slidably engage with the slide seat 152 are provided. The two slide rails 151 are arranged in parallel. The slide seat 152 has an L-shaped structure, and its vertical support surface is detachably connected to the end plate fixing module 3 by bolts. This facilitates the replacement of different end plate fixing modules 3 according to different sizes of EGR pipe housing 10. The difference between different end plate fixing modules 3 lies in the different end plate positioning blocks 9. Of course, it can also be an end plate fixing module 3 with different structures. The slide rail 151 is fixedly connected to the base plate.

[0034] See Figure 1 Axial cylinder 1 is connected to an air source, which supplies air to axial cylinder 1. The air source is connected to an air source controller, which includes an air source triplet and a pneumatic valve. The cylinder intake pressure is set by a mechanical pressure regulating valve.

[0035] The decision logic for pressure sensor 4 is as follows:

[0036] 1. Pass: Read the value of pressure sensor 4. If the peak pressure is within the set threshold, it is considered passable.

[0037] 2. Unqualified: Read the value of pressure sensor 4. If the pressure exceeds the limit or is abnormal, it is judged as unqualified.

[0038] 3. Data output: Store the detection results in the database.

[0039] It should be noted that in this embodiment, the indentation force threshold of the EGR tube housing 10 is ≤0.7kN, the single-piece detection time is ≤15 seconds, the axial cylinder 1 is a double-stroke cylinder, which is the power source for the indentation force, and the thrust range is 0.1-5kN. The range of the pressure sensor 4 is 0-20kN, and the accuracy is ±0.02%FS.

[0040] Example 2

[0041] The difference between this embodiment and Embodiment 1 is that it is extended to dual-station detection, that is, two sets of parallel pressure detection devices are set up, thereby realizing dual-tube detection and improving detection efficiency.

[0042] Example 3

[0043] The difference between this embodiment and embodiment 1 is that a temperature compensation module is added. The temperature compensation module is electrically or communicatively connected to the controller, and the pressure sensor 4 is electrically or communicatively connected to the controller, thereby automatically correcting the sensor reading in a high-temperature environment (>80℃) and improving the detection accuracy of the pressure sensor 4. The controller is electrically or communicatively connected to the pressure sensor 4 and the gas source controller 5.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting the pressing force of simulated EGR pipe end plate assembly, characterized in that, The product includes a product fixing bracket and axial cylinders and pressure sensors located at both ends of the product fixing bracket. The telescopic end of the axial cylinder is fixedly connected to an end plate fixing module. The end plate fixing module can clamp or loosen the end plate. The end plate fixing module includes a fixing housing, a fixing seat, and a clamping block. The fixing seat is elastically connected to the fixing housing by a spring. Both ends of the fixing seat that extend out of the fixing housing are provided with clamping blocks. One end of the clamping block extends to the outside of the plane of the fixing housing opposite to the plane where the axial cylinder is located.

2. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, The fixed housing includes an end plate positioning block and a positioning seat. One end of the positioning seat has an opening, and a through hole is formed on the positioning seat, which passes through its top and bottom. The end plate positioning block and the positioning seat are fixed together to form the fixed housing. The inner wall of the through hole is elastically connected to the fixed seat by a spring.

3. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, The clamping block has a T-shaped structure. The vertical section of the clamping block is rotatably connected to the fixed base, and the horizontal section of the clamping block, away from the pressure sensor, is elastically connected to the clamping block via a spring.

4. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, One end of the fixed housing is snapped into the end plate, and the end of the end plate connected to the fixed housing has a groove that matches the end of the fixed housing.

5. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, It also includes a pneumatic clamping assembly, which includes a vertical clamping cylinder and a clamping bracket connected to the telescopic end of the vertical clamping cylinder. The vertical clamping cylinder can drive the clamping bracket to move toward or away from the clamping bracket.

6. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, It also includes a base plate, and the product fixing bracket, axial cylinder, and pressure sensor are all fixed on the top of the base plate.

7. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 6, characterized in that, The pressure sensor is fixedly connected to the top of the base plate via end mounting seat one, and the pressure sensor is fixedly connected to the vertical connecting surface of end mounting seat one. The axial cylinder is fixedly connected to the top of the base plate via end mounting seat two.

8. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 6, characterized in that, The end plate fixing module is slidably connected to the base plate via a slide rail assembly. The slide rail assembly includes a slide rail and a slide base that are slidably connected. The slide base is fixedly connected to the end plate fixing module, and the slide rail is fixedly connected to the base plate.

9. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, The end plate fixing module is detachably fixed to the telescopic end of the axial cylinder by bolts.

10. The device for detecting the pressing force of simulated EGR pipe end plate assembly according to claim 1, characterized in that, The product's mounting bracket, axial cylinder, pressure sensor, and end plate mounting module are all coaxial.

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