Distribution pipe inner hole automatic detection device

Abstract

The utility model provides a distribution pipe inner hole automatic detection device, the distribution pipe inner hole automatic detection device comprises a base plate and an endoscope, the base plate is provided with a first slide rail, a first support and a first positioning seat, the first slide rail is provided with a first slide block, the first slide block is connected with a first fixing seat, the first fixing seat is connected with the endoscope body, and the endoscope body is connected with the first support. A mirror rod of the endoscope corresponds to an inner cavity of the distribution pipe, and a probe of the mirror rod detects the inner side wall of the inner cavity of the distribution pipe; the first support is located between the first fixing base and the first positioning base, a first groove used for fixing the first end of the distribution pipe is formed in the top of the first support, a first connecting block is arranged on the side face, facing the first support, of the first positioning base, the first connecting block is connected with a first positioning block, and a second groove used for fixing the second end of the distribution pipe is formed in the first positioning block. According to the utility model, the problem of how to automatically detect the quality of the inner hole of the distribution pipe in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of inner hole detection of a distribution pipe, in particular to an automatic inner hole detection device for a distribution pipe. Background Art

[0002] With the development of the automobile industry, in order to reduce emissions and increase efficiency, the pressure of automobile engine fuel power system has been on an upward trend, reaching the current system pressure of 350bar to 500bar. This requires the development of fuel distribution pipes that can withstand higher working pressures. In order to meet such requirements, forged rail fuel distribution pipes have been developed. The inner hole of this type of fuel distribution pipe is a deep hole drilled by a deep hole drill, and the inner hole of the distribution pipe is formed by a deep hole drill (for example, the inner diameter of the hole is φ12-14 and the depth is 200-350).

[0003] The deep hole in the distribution pipe is drilled to create an internal oil cavity, which can withstand a maximum operating pressure of 350 bar. After the fuel is pumped into the distribution pipe by the oil pump, it is then transferred to each injector through the distribution pipe. It is a pipe component of the engine.

[0004] The inner hole of the distribution pipe (also known as the oil cavity or "distribution pipe lumen") must be free of visible pits and cracks, which directly affect the service life and quality of the distribution pipe. Furthermore, the pipe must be free of visible burrs and impurities, which can cause blockage during oil delivery and directly affect the quality of the entire engine. The oil cavity is relatively deep, and conventional methods cannot be used to inspect the machining quality of the machined holes.

[0005] Therefore, how to automatically detect the quality of the inner hole of the distribution pipe becomes a technical problem that needs to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide an automatic detection device for the inner hole of a distribution pipe, which mainly solves the problem of how to automatically detect the quality of the inner hole of a distribution pipe in the above-mentioned prior art, and provides an automatic detection device for the inner hole of a distribution pipe.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A device for automatically detecting the inner hole of a distribution pipe is characterized in that: the device comprises a base plate and an endoscope, the base plate being provided with a first slide rail, a first bracket, and a first positioning seat, the first slide rail being provided with a first slider connected to a first fixing seat, the first fixing seat being connected to a body of the endoscope, the endoscope rod corresponding to the inner cavity of the distribution pipe, and the probe of the rod detecting the inner wall of the inner cavity of the distribution pipe;

[0009] The first bracket is located between the first fixing seat and the first positioning seat. A first groove for fixing the first end of the distribution pipe is provided on the top of the first bracket. A first connecting block is provided on a side of the first positioning seat facing the first bracket. The first connecting block is connected to the first positioning block. The first positioning block is provided with a second groove for fixing the second end of the distribution pipe.

[0010] Furthermore, the first connecting block is also connected to the second positioning block, which is located below the first positioning block. The second positioning block is provided with a first hollow portion and a first positioning pin. The injector seat near the second end of the distribution pipe is embedded in the first hollow portion, and the first positioning pin is embedded in the fixed bracket near the second end of the distribution pipe.

[0011] Furthermore, a first guide block is provided on a side of the first bracket facing the first fixing seat, and a first guide hole for circumferentially limiting the mirror rod of the endoscope is provided in the first guide block.

[0012] Furthermore, a first protrusion for embedding into the inner cavity of the first end of the distribution pipe is provided on a side of the first limiting block facing the first bracket, and one end of the first guide hole opens in the middle of the first protrusion.

[0013] Furthermore, a first positioning plate is provided on the bottom plate, the first bracket is fixed to one end of the first positioning plate close to the first slide rail, a second slide rail is provided on one end of the first positioning plate away from the first slide rail, and the first positioning seat is connected to the second slide rail through a second slider;

[0014] The second slide rail and the first slide rail are on the same straight line or the second slide rail and the first slide rail are arranged in parallel.

[0015] Furthermore, an adjustment plate is provided on the bottom plate, and a plurality of adjustment holes are provided on the adjustment plate. The adjustment holes cooperate with the third positioning pins to limit the position of the first positioning seat in the left and right directions.

[0016] The adjusting plate is arranged parallel to the second slide rail.

[0017] Furthermore, both ends of the bottom plate are connected to the handle via a second connecting block;

[0018] The top of the first fixing seat is detachably connected to the first fixing pressing block, and the first fixing pressing block fixes the lens body of the endoscope on the top of the first fixing seat.

[0019] Furthermore, one end of the endoscope body is connected to the endoscope rod, and the other end of the endoscope body is connected to the CCD sensor.

[0020] Furthermore, the shape of the first protrusion matches the shape of the inner cavity of the first end of the dispensing tube.

[0021] A specific method for using an automatic detection device for the inner hole of a distribution pipe, using an automatic detection device for the inner hole of a distribution pipe, the specific steps are as follows:

[0022] First, move the endoscope body to the rearmost side and place it at the origin position;

[0023] Secondly, the distribution pipe is positioned through the first guide block and the second positioning block and then placed in the first groove of the first bracket and the second groove of the first positioning block to position the distribution pipe;

[0024] Once the fuel distribution pipe is in place, slowly push the endoscope forward. The endoscope rod with the probe enters the inner cavity of the fuel distribution pipe and transmits the image information inside the fuel distribution pipe to the CCD sensor. The CCD sensor automatically detects the surface condition of the inner hole of the fuel distribution pipe through software and automatically determines whether there are any quality defects in the inner hole of the fuel distribution pipe. Once the inner hole of the entire fuel distribution pipe is inspected,

[0025] Finally, the endoscope is removed backwards and the inspection is completed.

[0026] In view of the above technical features, the utility model has the following beneficial effects:

[0027] 1. The utility model is an automatic detection device for the inner hole of a distribution pipe. By moving the endoscope back and forth, the mirror rod carries the probe to move back and forth in the inner hole of the distribution pipe and detects the inner hole of the distribution pipe, and automatically transmits the image information in the distribution pipe to the CCD sensor. The CCD sensor will automatically analyze the processing quality of the pipe through software and automatically judge the quality of the distribution pipe, thereby realizing automatic detection of the inner hole of the distribution pipe, controlling the quality of deep hole drilling of the distribution pipe, and preventing defective parts from flowing into the next assembly process. Therefore, the utility model is a kind of automatic detection device for the inner hole of the distribution pipe. After the hole of the distribution pipe is processed, the inner hole quality detection device performs 100% inspection. It can effectively detect the quality of the inner hole of the distribution pipe, intercept the outflow of defective products, and improve the quality of the fuel distribution pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an automatic detection device for the inner hole of a distribution pipe in specific embodiment 1 (stereoscopic perspective, without the distribution pipe installed).

[0029] Figure 2 It is a structural schematic diagram of an automatic detection device for the inner hole of a distribution pipe in specific embodiment 1 (main view angle, the distribution pipe is not installed).

[0030] Figure 3 It is a structural schematic diagram of an automatic detection device for the inner hole of a distribution pipe in specific embodiment 1 (top view angle, the distribution pipe is not installed).

[0031] Figure 4 It is a structural schematic diagram of an automatic detection device for the inner hole of a distribution pipe in specific embodiment 1 (stereoscopic perspective, with the distribution pipe installed).

[0032] Figure 5Schematic diagram of the structure of the distribution pipe in specific embodiment 1.

[0033] Figure 6 yes Figure 5 Middle AA section view.

[0034] In the figure: 1, bottom plate; 2, endoscope; 2-1, mirror body; 2-2, mirror rod; 2-3, probe; 3, first slide rail; 4, first slider; 5, first fixing seat; 5-1, first fixing pressure block; 6, first bracket; 6-1, first groove; 7, first positioning seat; 8, first connecting block; 9, first positioning block; 9-1, second groove; 10, second positioning block; 10-1, first hollow portion; 10-2, first positioning pin; 11, first guide block; 11 -1. First guide hole; 11-2. First protrusion; 12. First positioning plate; 13. Second slide rail; 14. Second slider; 15. Adjustment plate; 15-1. Adjustment hole; 16. Third positioning pin; 17. CCD sensor; 18. Handle; 18-1. Second connecting block; 19. Distribution pipe; 19-1. Inner cavity of distribution pipe; 19-2. First end of distribution pipe; 19-3. Second end of distribution pipe; 19-4. Injector seat; 19-5. Fixing bracket. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should also be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined by the appended claims.

[0036] See also Figures 1 to 6Specific embodiment 1, this embodiment 1 provides an automatic detection device for the inner hole of a distribution tube, including a base plate 1 and an endoscope 2, the base plate 1 is provided with a first slide rail 3, a first bracket 6 and a first positioning seat 7, the first slide rail 3 is provided with a first slider 4, the first slider 4 is connected to the first fixing seat 5, the first fixing seat 5 is connected to the mirror body 2-1 of the endoscope 2, the mirror rod 2-2 of the endoscope 2 corresponds to the inner cavity 19-1 of the distribution tube; the mirror body 2-1 of the endoscope 2 is connected to the mirror rod 2-2 of the endoscope 2, and the mirror rod 2-2 is away from the mirror body 2- A probe 2-3 is provided at one end for detecting the condition of the inner surface of the distribution tube lumen 19-1 (whether it is flat, whether there are pits, etc.). The first slider 4 drives the first fixing seat 5 to slide back and forth along the first slide rail 3. The first fixing seat 5 drives the endoscope body 2-1 and the mirror rod 2-2 of the endoscope 2 to move back and forth synchronously, allowing the probe 2-3 of the mirror rod 2-2 to move back and forth within the distribution tube lumen 19-1, helping the probe 2-3 to detect every corner of the distribution tube lumen 19-1 and ensure comprehensive detection. The top of the first fixing seat 5 is detachably connected to the first fixed pressure block 5-1, which fixes the endoscope body 2-1 to the top of the first fixing seat 5, making it easy to replace the endoscope body 2-1.

[0037] First bracket 6 is positioned between first fixing seat 5 and first positioning seat 7. A first groove 6-1 is defined at the top of first bracket 6 for securing first end 19-2 of the distribution tube. A first connecting block 8 is defined on the side of first positioning seat 7 facing first bracket 6. This connecting block 8 connects to first positioning block 9, which in turn defines a second groove 9-1 for securing second end 19-3 of the distribution tube. With first end 19-2 of distribution tube 19 positioned within first groove 6-1 and second end 19-3 of distribution tube 19 positioned within second groove 9-1, mirror rod 2-2 can be inserted into inner cavity 19-1 of distribution tube 19 and freely move forward and backward within it.

[0038] The first connecting block 8 is also connected to the second positioning block 10, and the second positioning block 10 is located below the first positioning block 9. The second positioning block 10 is provided with a first hollow portion 10-1 and a first positioning pin 10-2. The injector seat 19-4 near the second end 19-3 of the distribution pipe is embedded in the first hollow portion 10-1. The first hollow portion 10-1 is used to prevent the distribution pipe 19 from circumferential movement (i.e., to prevent the distribution pipe 19 from rotating). The first positioning pin 10-2 is embedded in the fixed bracket 19-5 near the second end 19-3 of the distribution pipe. The first positioning pin 10-2 is an error-proof design to prevent the two ends of the distribution pipe 19 from being placed upside down, and to ensure that the opening of the first end 19-2 of the distribution pipe connected to its inner cavity 19-1 corresponds to the direction of the endoscope 2, thereby improving the efficiency of the installation and fixation of the distribution pipe 19 before detection.

[0039] A first guide block 11 is provided on the side of the first bracket 6 facing the first fixing seat 5. A first guide hole 11-1 is provided within the first guide block 11 for circumferentially limiting the position of the endoscope shaft 2-2. Once the endoscope shaft 2-2 is inserted into the first guide hole 11-1, it can be accurately and efficiently inserted into the dispensing tube lumen 19-1. Furthermore, during the forward and backward movement of the endoscope shaft 2-2, the first guide hole 11-1 also limits the range of displacement of the endoscope shaft 2-2 (i.e., up, down, left, and right), preventing the endoscope shaft 2-2 from contacting the dispensing tube lumen 19-1 and thus preventing frictional damage to the endoscope shaft 2-2 and / or the probe 2-3.

[0040] The first guide block 11 is provided with a first protrusion 11-2 on the side facing the first bracket 6 for embedding into the inner cavity 19-1 of the first end 19-2 of the distribution tube. One end of the first guide hole 11-1 opens in the middle of the first protrusion 11-2. At this time, the first protrusion 11-2 is suspended in the first groove 6-1. The first protrusion 11-2 and the first groove 6-1 jointly clamp and fix the first end 19-2 of the distribution tube 19, improving the stability of the fixation of the first end 19-2 of the distribution tube. The shape of the first protrusion 11-2 matches the shape of the inner cavity 19-1 of the first end 19-2 of the distribution tube. The first protrusion 11-2 also has an anti-error design to prevent the two ends of the distribution tube 19 from being placed upside down, ensuring that the opening of the first end 19-2 of the distribution tube that connects to its inner cavity 19-1 corresponds to the direction of the endoscope 2, thereby improving the efficiency of the installation and fixation of the distribution tube 19 before inspection. In addition, the design of the first protrusion 11-2 can also ensure the axial height of the distribution tube inner cavity 19-1, ensure that the axial direction of the distribution tube inner cavity 19-1 remains horizontal, and ensure that when the mirror rod 2-2 moves back and forth in the distribution tube inner cavity 19-1 (i.e., translates horizontally), the probe 2-3 of the mirror rod 2-2 will not touch the inner wall of the distribution tube inner cavity 19-1.

[0041] A first positioning plate 12 is also provided on the base plate 1, and the first bracket 6 is fixed on one end of the first positioning plate 12 close to the first slide rail 3. A second slide rail 13 is provided on the end of the first positioning plate 12 away from the first slide rail 3, and the first positioning seat 7 is connected to the second slide rail 13 through a second slider 14; the second slider 14 carries the first positioning seat 7 to slide back and forth along the second slide rail 13, and the first positioning seat 7 carries the first positioning block 9 and the second positioning block 10 away from or close to the first bracket 6, and adjusts the distance between the first positioning seat 7 and the first bracket 6 to meet the detection requirements of distribution pipes 19 of different lengths.

[0042] The second slide rail 13 and the first slide rail 3 are on the same straight line or are arranged in parallel with the first slide rail 3 to ensure that the mirror rod 2-2 can extend into the distribution tube cavity 19-1 and move back and forth in the distribution tube cavity 19-1.

[0043] An adjustment plate 15 is also provided on the base plate 1, and the adjustment plate 15 is provided with a plurality of adjustment holes 15-1. The adjustment holes 15-1 cooperate with the third positioning pin 16 to limit the position of the first positioning seat 7 in the left and right directions; in order to prevent the first positioning seat 7 from shaking left and right and to avoid affecting the consistency of the axial forward and backward movement trajectory of the distribution tube 19 and the mirror rod 2-2, the third positioning pin 16 is threadedly connected to the adjustment hole 15-1. By rotating the third positioning pin 16, the length of the third positioning pin 16 after passing through the adjustment hole 15-1 is controlled to ensure that the third positioning pin 16 is against the first positioning seat 7 after passing through the adjustment hole 15-1, thereby limiting the position of the first positioning seat 7 in the left and right directions.

[0044] The adjustment plate 15 is arranged parallel to the second slide rail 13 to ensure that when the first positioning seat 7 moves to other positions on the second slide rail 13 , the third positioning pin 16 can also abut against the moved first positioning seat 7 .

[0045] Both ends of the base plate 1 are connected to the handle 18 through the second connecting block 18 - 1 , so as to facilitate the carrying of the base plate 1 .

[0046] One end of the body 2-1 of the endoscope 2 is connected to the rod 2-2 of the endoscope 2, and the other end of the body 2-1 of the endoscope 2 is connected to the CCD sensor 17. As long as the body 2-1 of the endoscope 2 moves with the rod 2-2 in the inner cavity 19-1 of the distribution tube, the probe 2-3 on the rod 2-2 detects the bottom of the distribution tube 19 from the mouth of the distribution tube 19, and automatically transmits the image information of the inner wall of the inner cavity 19-1 of the distribution tube to the CCD sensor 17. The CCD sensor 17 will automatically analyze the processing quality inside the tube through software, and automatically judge the quality inside the distribution tube 19 according to the pre-set parameters. If it is OK, it will be displayed as qualified, and if it is unqualified, it will be displayed as NOK, and an alarm will be prompted.

[0047] A specific method for using an automatic detection device for the inner hole of a distribution pipe is as follows: first, the body 2-1 of the endoscope 2 is moved to the rearmost side and placed at the origin position; secondly, the distribution pipe 19 is positioned by the first guide block 11 and the second positioning block 10 and placed in the first groove 6-1 of the first bracket 6 and the second groove 9-1 of the first positioning block 9 to position the distribution pipe 19; thirdly, after the distribution pipe 19 is placed, the body 2-1 of the endoscope is slowly pushed forward, and the image information inside the distribution pipe 19 is transmitted to the CCD sensor 17 through the mirror rod 2-2 of the endoscope 2. The CCD sensor 17 automatically detects the surface state of the inner hole of the fuel distribution pipe 19 through software, and automatically determines whether the inner hole of the distribution pipe 19 has any quality defects (such as pits or fractures, burrs or impurities). After the inner hole of the entire fuel distribution pipe 19 is inspected, the endoscope 2 is finally removed backward to complete the inspection. The endoscope, CCD sensor, and software for automatically detecting the surface condition of the inner hole of the fuel distribution pipe 19 and automatically determining whether the inner hole of the distribution pipe 19 has any quality defects are all existing technologies and will not be elaborated on in detail.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic detection device for the inner hole of a distribution pipe, characterized by: The automatic detection device for the inner hole of a distribution pipe comprises a base plate (1) and an endoscope (2); the base plate (1) is provided with a first slide rail (3), a first bracket (6) and a first positioning seat (7); the first slide rail (3) is provided with a first slider (4); the first slider (4) is connected to a first fixing seat (5); the first fixing seat (5) is connected to a body (2-1) of the endoscope (2); a mirror rod (2-2) of the endoscope (2) corresponds to an inner cavity (19-1) of the distribution pipe; and a probe (2-3) of the mirror rod (2-2) detects the inner wall of the inner cavity (19-1) of the distribution pipe. The first bracket (6) is located between the first fixing seat (5) and the first positioning seat (7). The top of the first bracket (6) is provided with a first groove (6-1) for fixing the first end (19-2) of the distribution pipe. The first positioning seat (7) is provided with a first connecting block (8) on a side facing the first bracket (6). The first connecting block (8) is connected to the first positioning block (9). The first positioning block (9) is provided with a second groove (9-1) for fixing the second end (19-3) of the distribution pipe.

2. The automatic detection device for the inner hole of a distribution pipe according to claim 1, characterized in that: The first connecting block (8) is also connected to the second positioning block (10), the second positioning block (10) is located below the first positioning block (9), the second positioning block (10) is provided with a first hollow portion (10-1) and a first positioning pin (10-2), the injector seat (19-4) near the second end (19-3) of the distribution pipe is embedded in the first hollow portion (10-1), and the first positioning pin (10-2) is embedded in the fixing bracket (19-5) near the second end (19-3) of the distribution pipe.

3. The automatic detection device for the inner hole of a distribution pipe according to claim 2, characterized in that: A first guide block (11) is provided on one side of the first bracket (6) facing the first fixing seat (5), and a first guide hole (11-1) for circumferentially limiting the mirror rod (2-2) of the endoscope (2) is provided in the first guide block (11).

4. The automatic detection device for the inner hole of a distribution pipe according to claim 3, characterized in that: A first protrusion (11-2) for embedding into the inner cavity of the first end (19-2) of the distribution pipe is provided on the side of the first guide block (11) facing the first bracket (6), and one end of the first guide hole (11-1) opens in the middle of the first protrusion (11-2).

5. The automatic detection device for the inner hole of a distribution pipe according to claim 4, characterized in that: A first positioning plate (12) is further provided on the bottom plate (1), the first bracket (6) is fixed to one end of the first positioning plate (12) close to the first slide rail (3), a second slide rail (13) is provided at one end of the first positioning plate (12) away from the first slide rail (3), and the first positioning seat (7) is connected to the second slide rail (13) via a second slider (14); The second slide rail (13) and the first slide rail (3) are arranged on the same straight line or the second slide rail (13) and the first slide rail (3) are arranged in parallel.

6. The automatic detection device for the inner hole of a distribution pipe according to claim 5, characterized in that: An adjustment plate (15) is also provided on the bottom plate (1), and the adjustment plate (15) is provided with a plurality of adjustment holes (15-1). The adjustment holes (15-1) cooperate with the third positioning pins (16) to limit the position of the first positioning seat (7) in the left and right directions. The regulating plate (15) is arranged parallel to the second slide rail (13).

7. The automatic detection device for the inner hole of a distribution pipe according to claim 6, characterized in that: Both ends of the bottom plate (1) are connected to the handle (18) via a second connecting block (18-1); The top of the first fixing seat (5) is detachably connected to a first fixing pressing block (5-1), and the first fixing pressing block (5-1) fixes the lens body (2-1) of the endoscope (2) on the top of the first fixing seat (5).

8. The automatic detection device for the inner hole of a distribution pipe according to claim 7, characterized in that: One end of the endoscope body (2-1) is connected to the endoscope rod (2-2) of the endoscope (2), and the other end of the endoscope body (2-1) is connected to the CCD sensor (17).

9. The automatic detection device for the inner hole of a distribution pipe according to claim 8, characterized in that: The shape of the first protrusion (11-2) matches the shape of the inner cavity (19-1) of the first end (19-2) of the distribution tube.

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