An image acquisition device for detecting the piston rod of an automobile shock absorber

Abstract

The utility model discloses an image acquisition device for detecting a piston rod of an automobile shock absorber, and relates to the field of automobile shock absorber piston rod detection equipment. The utility model comprises: a positioning mounting frame, which is used to install a linear light source mechanism and an image acquisition mechanism, wherein the image acquisition mechanism is arranged above the linear light source mechanism; a piston rod positioning tool, which is used to place the piston rod and drive the piston rod to rotate along the axis, and comprises a first containing mechanism and a second containing mechanism, wherein the first containing mechanism serves as an active end and the second containing mechanism serves as a driven end; the linear light source output by the linear light source mechanism is arranged parallel to the rotation axis of the piston rod, and the normal of the image acquisition mechanism coincides with the radius of the piston rod; the positioning mounting frame and the piston rod positioning tool are both installed on a base; so as to solve the problem that the existing equipment is not well targeted for the surface quality detection of the automobile shock absorber piston rod and is easy to miss surface defects.

Description

Technical Field

[0001] The utility model relates to the field of automobile shock absorber piston rod detection equipment, in particular to an automobile shock absorber piston rod detection image acquisition device. Background Art

[0002] The piston rod of a car shock absorber is the most obvious and direct part in the car shock absorber. When it is assembled on the car shock absorber, it must meet the required surface quality. Because once the piston rod with substandard surface quality is installed in the shock absorber, it may not only affect the service life of the shock absorber, but also affect the comfort and safety of car driving. Therefore, before the piston rod of the car shock absorber is installed in the shock absorber, it is necessary to ensure that the surface quality of the piston rod meets the requirements of installation and use. At present, the surface quality inspection method of this part is mainly based on manual visual inspection. Manual visual inspection will be affected by uncertain factors such as emotions and fatigue, which is easy to cause missed inspections and false inspections, and then cause a series of problems such as slow inspection rhythm, high labor costs and low quality of manual inspections. Utility Model Content

[0003] The utility model aims to provide an image acquisition device for detecting a piston rod of an automobile shock absorber, so as to solve the problem that the existing equipment is not well targeted for detecting the surface quality of the piston rod of the automobile shock absorber and is easy to miss the detection of surface defects.

[0004] In order to solve the above problems, the utility model adopts the following technical means:

[0005] An image acquisition device for detecting a piston rod of an automobile shock absorber, comprising:

[0006] A positioning mounting frame, used for mounting a linear light source mechanism and an image acquisition mechanism, wherein the image acquisition mechanism is arranged above the linear light source mechanism;

[0007] A piston rod positioning tool, used to place the piston rod and drive the piston rod to rotate along the axis, comprising a first containing mechanism and a second containing mechanism, wherein the first containing mechanism serves as an active end and the second containing mechanism serves as a driven end;

[0008] The linear light source output by the linear light source mechanism is arranged parallel to the rotation axis of the piston rod, and the normal line of the image acquisition mechanism coincides with the radius of the piston rod;

[0009] The positioning mounting frame and the piston rod positioning tool are both installed on a base.

[0010] Preferably, the first containing mechanism comprises a first mounting platform, a first roller and a second roller having parallel rotation axes being rotatably mounted on the top surface of the first mounting platform, the first roller and the second roller being arranged on the same horizontal plane, the first roller being transmission-connected to a rotating motor, one end of a piston rod being placed between the first roller and the second roller; the distance between the first roller and the second roller being smaller than the diameter of the piston rod.

[0011] The second containing mechanism comprises a second mounting platform, a third roller and a fourth roller are rotatably mounted on the top surface of the second mounting platform, the third roller is coaxially arranged with the first roller, and the fourth roller is coaxially arranged with the second roller.

[0012] Furthermore, the first mounting platform is fixedly arranged, and the first mounting platform is connected to the second mounting platform via a telescopic mechanism.

[0013] Furthermore, the telescopic mechanism includes a positioning plate installed on the base, a pair of limit rods are installed on the side of the positioning plate facing the first mounting platform, one end of the limit rod passes through the second mounting platform and is connected to the side of the first mounting platform, the second mounting platform is slidably connected to the limit rod, a threaded rod is rotatably installed on the positioning plate, one end of the threaded rod passes through the second mounting platform and is rotatably connected to the side of the first mounting platform, and the threaded rod is threadedly connected to the second mounting platform.

[0014] Furthermore, the positioning mounting frame is provided with a first vertical sliding mechanism, the image acquisition mechanism is installed on the first vertical sliding mechanism, the first vertical sliding mechanism includes a vertical guide rail provided on the positioning mounting frame and a slide plate slidably installed on the vertical guide rail, the image acquisition mechanism is installed on the slide plate, the slide plate and the vertical guide rail are positioned and linked by bolts, and the vertical guide rail is provided with a plurality of screw holes for installing bolts arranged along its extension direction.

[0015] Furthermore, the image acquisition mechanism is a high-definition line scan camera.

[0016] Furthermore, the linear light source mechanism is connected to the positioning mounting frame through an adjustment mechanism, and the adjustment mechanism includes a vertical telescopic part and a horizontal telescopic part, the telescopic end of the vertical telescopic part is installed with a displacement block, the positioning end of the horizontal telescopic part is connected to the displacement block, and the telescopic end of the horizontal telescopic part is connected to the side wall of the linear light source mechanism.

[0017] During use, the utility model has the following beneficial effects:

[0018] The piston rod positioning fixture is used to rotate the piston rod along its axis. With the high-resolution image acquisition mechanism, the curved piston rod surface can be unfolded into a plane for scanning during the rotation of the piston rod, and the imaging repeatability is good. The piston rod is illuminated by a linear light source mechanism, and the image of the detected surface defects is obvious, which is convenient for subsequent computer program analysis and identification. In addition, the rotation of the piston rod is based on its processed reference outer surface, so that the piston rod has small jumps when rotating, and the distance from the line scan camera lens remains basically unchanged, avoiding imaging blur caused by changes in depth of field, and finally obtaining clear imaging of the piston rod surface defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the first containing mechanism side structure of the piston rod positioning tooling of the utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the second containing mechanism side of the piston rod positioning tool of the utility model.

[0022] Among them, 1-positioning mounting frame, 2-linear light source mechanism, 3-image acquisition mechanism, 4-first containing mechanism, 41-first mounting platform, 42-first roller, 43-second roller, 5-second containing mechanism, 51-second mounting platform, 52-third roller, 53-fourth roller, 6-base, 7-rotating motor, 8-positioning plate, 9-limiting rod, 10-threaded rod, 11-vertical guide rail, 12-slide plate, 13-vertical telescopic part, 14-horizontal telescopic part, 15-displacement block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Please refer to Figures 1 to 3 As shown, an image acquisition device for detecting a piston rod of an automobile shock absorber comprises:

[0030] A positioning mounting frame 1, used for mounting a linear light source mechanism 2 and an image acquisition mechanism 3, wherein the image acquisition mechanism 3 is arranged above the linear light source mechanism 2;

[0031] The piston rod positioning tool is used to place the piston rod and drive the piston rod to rotate along the axis, including a first containing mechanism 4 and a second containing mechanism 5, wherein the first containing mechanism 4 serves as an active end and the second containing mechanism 5 serves as a driven end;

[0032] The linear light source output by the linear light source mechanism 2 is arranged parallel to the rotation axis of the piston rod, and the normal line of the image acquisition mechanism 3 coincides with the radius of the piston rod;

[0033] The positioning mounting frame 1 and the piston rod positioning tool are both installed on the base 6 .

[0034] In this way, the piston rod positioning fixture is used to rotate the piston rod along its axis. With the high-resolution image acquisition mechanism 3, the curved piston rod surface can be unfolded into a plane for scanning during the rotation of the piston rod, and the imaging repeatability is good. The linear light source mechanism 2 is used to illuminate the piston rod, and the image of the detected surface defects is obvious, which is convenient for subsequent computer program analysis and identification. In addition, the rotation of the piston rod is based on its processed reference outer surface, so that the piston rod has small jumps when rotating, and the distance from the line scan camera lens remains basically unchanged, avoiding imaging blur caused by changes in depth of field, and finally obtaining clear imaging of the piston rod surface defects.

[0035] Furthermore, for the first containing mechanism 4 and the second containing mechanism 5, the first containing mechanism 4 includes a first mounting platform 41, the first mounting platform 41 is installed on the base 6, and the top surface of the first mounting platform 41 is rotatably mounted with a first roller 42 and a second roller 43 parallel to the rotation axis, the first roller 42 and the second roller 43 are arranged in the same horizontal plane, the first roller 42 is transmission-connected to the rotating motor 7, and one end of the piston rod is placed between the first roller 42 and the second roller 43; the distance between the first roller 42 and the second roller 43 is smaller than the diameter of the piston rod, so that when the first roller 42 rotates, the friction between the first roller 42 and the piston rod can be used to rotate the piston rod.

[0036] The second containing mechanism 5 serves as a driven mechanism and plays a supporting role for the piston rod, and includes a second mounting platform 51, on the top surface of which a third roller 52 and a fourth roller 53 are rotatably mounted, wherein the third roller 52 is coaxially arranged with the first roller 42, and the fourth roller 53 is coaxially arranged with the second roller 43. In this way, during the rotation of the piston rod, the piston rod can be supported by the clamping of the third roller 52 and the fourth roller 53, and the rotation characteristics of the third roller 52 and the fourth roller 53 are utilized to prevent the piston rod from falling out of the second containing mechanism 5 during the rotation and photographing process.

[0037] Furthermore, the first mounting platform 41 is fixedly arranged, and the first mounting platform 41 is connected to the second mounting platform 51 via a telescopic mechanism.

[0038] In this way, the telescopic mechanism can be used to conveniently adjust the distance between the first mounting platform 41 and the second mounting platform 51, so that for piston rods of different lengths, the first containing mechanism 4 and the second containing mechanism 5 can be used to support both ends of the piston rod, thereby improving the stability of the piston rod during rotation and preventing the piston rod from falling or shaking during shooting.

[0039] Furthermore, for the telescopic mechanism, the telescopic mechanism includes a positioning plate 8 installed on the base 6, and a pair of limiting rods 9 are installed on the side of the positioning plate 8 facing the first mounting platform 41, one end of the limiting rod 9 passes through the second mounting platform 51 and is connected to the side of the first mounting platform 41, and the second mounting platform 51 is slidably connected to the limiting rod 9, and a threaded rod 10 is rotatably installed on the positioning plate 8, one end of the threaded rod 10 passes through the second mounting platform 51 and is rotatably connected to the side of the first mounting platform 41, and the threaded rod 10 is threadedly connected to the second mounting platform 51.

[0040] Thus, the distance between the first containing mechanism 4 and the second containing mechanism 5 can be accurately and continuously adjusted by rotating the threaded rod 10. At the same time, the distance between the first containing mechanism 4 and the second containing mechanism 5 can also be finely adjusted by utilizing the threaded transmission characteristics of the threaded rod 10.

[0041] Furthermore, in order to be able to quickly adjust the height of the image acquisition mechanism 3, a first vertical sliding mechanism is provided on the positioning mounting frame 1, and the image acquisition mechanism 3 is installed on the first vertical sliding mechanism. The first vertical sliding mechanism includes a vertical guide rail 11 provided on the positioning mounting frame 1 and a slide plate 12 slidably installed on the vertical guide rail 11. The image acquisition mechanism 3 is installed on the slide plate 12, and the slide plate 12 is positioned and linked to the vertical guide rail 11 by bolts. The vertical guide rail 11 is provided with a plurality of screw holes for installing bolts arranged along its extension direction.

[0042] In this way, the height at which the slide plate 12 is positioned is adjusted by means of positioning the bolts in screw holes at different heights, thereby adjusting the distance between the image acquisition device and the target piston rod.

[0043] Furthermore, the image acquisition mechanism 3 is a high-definition line scan camera.

[0044] At the same time, in order to conveniently adjust the linear light source mechanism 2, the linear light source mechanism 2 is connected to the positioning mounting frame 1 through an adjustment mechanism, and the adjustment mechanism includes a vertical telescopic part 13 and a horizontal telescopic part 14, and the telescopic end of the vertical telescopic part 13 is installed with a displacement block 15, the positioning end of the horizontal telescopic part 14 is connected to the displacement block 15, and the telescopic end of the horizontal telescopic part 14 is connected to the side wall of the linear light source mechanism 2.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An image acquisition device for detecting a piston rod of an automobile shock absorber, characterized in that: include: A positioning mounting frame (1) used for mounting a linear light source mechanism (2) and an image acquisition mechanism (3), wherein the image acquisition mechanism (3) is arranged above the linear light source mechanism (2); A piston rod positioning tool, used for placing the piston rod and driving the piston rod to rotate along the axis, comprising a first containing mechanism (4) and a second containing mechanism (5), wherein the first containing mechanism (4) serves as an active end and the second containing mechanism (5) serves as a driven end; The linear light source output by the linear light source mechanism (2) is arranged parallel to the rotation axis of the piston rod, and the normal line of the image acquisition mechanism (3) coincides with the radius of the piston rod; The positioning mounting frame (1) and the piston rod positioning tool are both mounted on a base (6).

2. The image acquisition device for detecting the piston rod of an automobile shock absorber according to claim 1, characterized in that: The first containing mechanism (4) comprises a first mounting platform (41), a first roller (42) and a second roller (43) having parallel rotation axes being rotatably mounted on the top surface of the first mounting platform (41), the first roller (42) and the second roller (43) being arranged on the same horizontal plane, the first roller (42) being transmission-connected to a rotating motor (7), and one end of a piston rod being placed between the first roller (42) and the second roller (43); The second containing mechanism (5) comprises a second mounting platform (51), a third roller (52) and a fourth roller (53) being rotatably mounted on the top surface of the second mounting platform (51), the third roller (52) being coaxially arranged with the first roller (42), and the fourth roller (53) being coaxially arranged with the second roller (43).

3. The image acquisition device for detecting the piston rod of an automobile shock absorber according to claim 2, characterized in that: The first mounting platform (41) is fixedly arranged, and the first mounting platform (41) is connected to the second mounting platform (51) via a telescopic mechanism.

4. The image acquisition device for detecting the piston rod of an automobile shock absorber according to claim 3, characterized in that: The telescopic mechanism comprises a positioning plate (8) mounted on the base (6); a pair of limiting rods (9) are mounted on a side of the positioning plate (8) facing the first mounting platform (41); one end of the limiting rod (9) passes through the second mounting platform (51) and is connected to a side surface of the first mounting platform (41); the second mounting platform (51) is slidably connected to the limiting rod (9); a threaded rod (10) is rotatably mounted on the positioning plate (8); one end of the threaded rod (10) passes through the second mounting platform (51) and is rotatably connected to a side surface of the first mounting platform (41); the threaded rod (10) is threadedly connected to the second mounting platform (51).

5. The image acquisition device for detecting the piston rod of an automobile shock absorber according to claim 1, characterized in that: The positioning mounting frame (1) is provided with a first vertical sliding mechanism, the image acquisition mechanism (3) is mounted on the first vertical sliding mechanism, the first vertical sliding mechanism comprises a vertical guide rail (11) provided on the positioning mounting frame (1) and a slide plate (12) slidably mounted on the vertical guide rail (11), the image acquisition mechanism (3) is mounted on the slide plate (12), the slide plate (12) and the vertical guide rail (11) are positioned and linked by bolts, and the vertical guide rail (11) is provided with a plurality of screw holes for mounting bolts arranged along its extension direction.

6. The automobile shock absorber piston rod detection image acquisition device according to claim 1 or 5, characterized in that: The image acquisition mechanism (3) is a high-definition line scan camera.

7. The image acquisition device for detecting a piston rod of an automobile shock absorber according to claim 1, characterized in that: The linear light source mechanism (2) is connected to the positioning mounting frame (1) via an adjustment mechanism, the adjustment mechanism comprising a vertical telescopic portion (13) and a horizontal telescopic portion (14), a displacement block (15) being mounted on the telescopic end of the vertical telescopic portion (13), a positioning end of the horizontal telescopic portion (14) being connected to the displacement block (15), and a telescopic end of the horizontal telescopic portion (14) being connected to a side wall of the linear light source mechanism (2).

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