Steel tape detection device

Abstract

The utility model relates to the technical field of steel tape metrological verification, in particular to a steel tape detection device. Comprising a detection platform, a linear moving mechanism, a movable support, a computer and an industrial camera, the linear moving mechanism is arranged in the length direction of the detection platform, and the movable support is installed on the linear moving mechanism and can slide back and forth along the linear moving mechanism; the industrial camera is installed on the movable support, and the signal output end of the industrial camera is in communication connection with the computer. According to the steel tape detection device of the utility model, the industrial camera shoots the images of the to-be-detected steel tape and the standard line scale, the images are transmitted to the computer, and the size calibration measurement of the to-be-detected steel tape is realized through the image processing software installed on the computer, so that errors caused by human eye reading can be effectively avoided; the image processing software reads the data more accurately, and errors or mistakes caused by manual work are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel tape measure measurement and calibration, more particularly to a steel tape measure detection device. BACKGROUND

[0002] Steel tape measure belongs to a commonly used length measuring instrument, and is widely applied in size measurement, area measurement and engineering measurement. Currently, the calibration of the steel tape measure is mainly through a manual adjustment method to adjust the detected steel tape measure, so that the scale surface of the detected steel tape measure is in the same plane as the standard line scale, and then the detected steel tape measure is adjusted so that the line axis of the detected steel tape measure is parallel to the edge of the standard line scale. Then, the end edge of the detected steel tape measure is aligned with the first end or the terminal line of the standard line scale by relying on the human eye to aim and adjust the fine adjustment nut. The alignment of the end edge of the steel tape measure is an important link in the calibration of the steel tape measure, and the alignment result will directly affect the calibration accuracy of the steel tape measure in subsequent operations. Finally, the reading microscope is moved to different measurement points to obtain the indication error of the detected tape by human eye estimation. This method relies on personnel magnifying glass to observe with one eye, and all depends on the human eye to aim and estimate, which is easy to bring in human error, has low precision, requires high experience of the operator, and has high work intensity. SUMMARY

[0003] The utility model aims at overcoming the defect of large human eye detection error in the prior art, and provides a steel tape measure detection device, which is simple to operate and effectively improves the detection precision.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] The utility model provides a steel tape measure detection device, which comprises a detection platform, a linear motion mechanism, a movable support, a computer and an industrial camera. The linear motion mechanism is arranged along the length direction of the detection platform. The movable support is installed on the linear motion mechanism and can slide back and forth along the linear motion mechanism. The industrial camera is installed on the movable support. The signal output end of the industrial camera is in communication connection with the computer.

[0006] The utility model discloses a steel tape measure detection device, and industrial camera is installed on linear moving mechanism through movable support, and linear moving mechanism is installed on detection platform, realizes the adjustment of industrial camera position through linear moving mechanism, makes industrial camera can move to and fro along the length direction of detection platform, and the image of steel tape measure scale is more accurately collected to industrial camera. There is standard line scale on the detection platform, and the steel tape measure to be detected is placed on the detection platform, and the image of the steel tape measure to be detected and standard line scale is shot through industrial camera, and the image is transported to computer, and the size calibration measurement of the steel tape measure to be detected is realized through the image processing software installed on computer, can effectively avoid the error of the reading of human eye, and the data of image processing software is read, can be more accurate, and effectively avoid the error or mistake of manual.

[0007] Further, it further includes fine adjustment platform and XY fine adjustment mechanism for adjusting XY direction position, the XY fine adjustment mechanism is installed on the movable support, the fine adjustment platform is connected with the movable end of the XY fine adjustment mechanism, and the industrial camera is installed on the fine adjustment platform.

[0008] Further, the XY fine adjustment mechanism includes X-axis linear fine adjustment mechanism and Y-axis linear fine adjustment mechanism, the Y-axis linear fine adjustment mechanism is installed on the movable support and is arranged in parallel with the linear moving mechanism, the fixed end of the X-axis linear fine adjustment mechanism is connected with the movable end of the Y-axis linear fine adjustment mechanism, and the fine adjustment platform is connected with the movable end of the X-axis linear fine adjustment mechanism.

[0009] Further, the linear moving mechanism includes driving motor, transmission screw rod, guide rail and sliding block, the guide rail is installed on the detection platform, the transmission screw rod is rotatably installed on the guide rail, one end of the transmission screw rod is connected with the output end of the driving motor, the sliding block is sleeved on the transmission screw rod and is threadedly connected with the transmission screw rod, and the sliding block is slidably connected with the guide rail, and the movable support is installed on the sliding block.

[0010] Further, the linear moving mechanism is provided with two groups, which are respectively installed on two sides of the detection platform; and the two groups of linear moving mechanisms are arranged in parallel. The linear moving mechanisms are arranged on two sides of the detection platform, and the two sides of the movable support are connected with the two groups of linear moving mechanisms respectively, so that the stability of the movable support can be improved, the shaking during movement can be avoided, and the stability of the whole device can be improved.

[0011] Further, the movable support is a portal frame structure, and the two sides of the movable support are connected with the sliders of the two groups of linear moving mechanisms respectively. The portal frame structure is stable, and the fine adjustment platform and the XY fine adjustment mechanism can be conveniently installed.

[0012] Further, the movable support is detachably connected with the slider. The movable support is detachably connected with the slider, so that the installation and dismounting can be facilitated.

[0013] Further, the X-axis linear fine adjustment mechanism and the Y-axis linear fine adjustment mechanism each comprise a linear sliding rail, an adjusting screw rod, a moving block and an adjusting knob; the adjusting screw rod is rotatably installed on the linear sliding rail, the moving block is sleeved on the adjusting screw rod and is in threaded connection with the adjusting screw rod; the moving block is in sliding connection with the linear sliding rail; the adjusting knob is connected with one end of the adjusting screw rod; the linear sliding rail of the Y-axis linear fine adjustment mechanism is installed on the movable support, the linear sliding rail of the X-axis linear fine adjustment mechanism is connected with the moving block of the Y-axis linear fine adjustment mechanism; and the fine adjustment platform is connected with the moving block of the X-axis linear fine adjustment mechanism. The pitch of the thread of the adjusting screw rod of the X-axis linear fine adjustment mechanism and the Y-axis linear fine adjustment mechanism is small, when the adjusting screw rod is rotated, the moving distance of the moving block is also small, so that the fine adjustment in the XY-axis direction can be realized.

[0014] Further, the device further comprises a mounting frame, the mounting frame comprises a first supporting rod and a second supporting rod, the first supporting rod is vertically fixed on the movable support, one end of the second supporting rod is detachably connected with the first supporting rod, a plurality of mounting holes for mounting a first supporting frame are arranged along the height direction of the first supporting rod, and the industrial camera is mounted on the first supporting rod.

[0015] Further, the industrial camera is rotatably connected with the first supporting rod through a universal shaft. The angle of the industrial camera can be adjusted through the universal shaft, the photographing can be more accurate, and the precision of data acquisition can be improved.

[0016] Compared with the prior art, the device has the following beneficial effects:

[0017] The utility model discloses a steel tape detection device, through the image of the standard line scale and the steel tape to be detected of industrial camera shooting, the image is transported to the computer, through the image processing software of installation on the computer, realizes the size calibration measurement of the steel tape to be measured, can effectively avoid the error of the eye reading, and image processing software reads data, can be more accurate, effectively avoids the error or error of manual. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is structure schematic diagram of linear movement structure of the utility model;

[0020] Figure 3 It is mounting frame structure schematic diagram of the utility model.

[0021] In the drawings, 1, detection platform;2, linear movement mechanism;3, movable support;4, computer;5, industrial camera;6, fine adjustment platform;7, mounting frame;8, drive motor;9, transmission screw;10, guide rail;11, sliding block;12, XY fine adjustment mechanism. DETAILED DESCRIPTION

[0022] The utility model makes further explanation in combination with specific implementation. Among them, the drawing is only for example explanation, and the representation is only schematic diagram, and cannot be understood as the restriction of the utility model;In order to better explain the embodiment of the utility model, some components of the drawing will be omitted, enlarged or reduced, and the size of actual product is not represented;For those skilled in the art, it is understandable that some well-known structures and their description in the drawing can be omitted.

[0023] The same or similar signs in the drawings of the utility model embodiment correspond to the same or similar parts;In the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, configuration and operation, therefore the position relationship of the description in the drawing is only for example explanation, and cannot be understood as the restriction of the utility model, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0024] Embodiment one

[0025] The first embodiment of the steel tape measure detection device comprises a detection platform 1, a linear movement mechanism 2, a movable support 3, a computer 4 and an industrial camera 5. The linear movement mechanism 2 is arranged along the length direction of the detection platform 1. The movable support 3 is installed on the linear movement mechanism 2 and can slide back and forth along the linear movement mechanism 2. The industrial camera 5 is installed on the movable support 3. The signal output end of the industrial camera 5 is in communication connection with the computer 4.

[0026] The steel tape measure detection device provided in the embodiment is characterized in that the industrial camera 5 is installed on the linear movement mechanism 2 through the movable support 3. The linear movement mechanism 2 is installed on the detection platform 1. The position of the industrial camera 5 is adjusted through the linear movement mechanism 2. The industrial camera 5 can move back and forth along the length direction of the detection platform 1. The industrial camera 5 can more accurately collect the scale image of the steel tape measure. The standard linear scale is arranged on the detection platform 1. The steel tape measure to be detected is placed on the detection platform 1. The image of the steel tape measure to be detected and the standard linear scale is shot by the industrial camera 5. The image is transmitted to the computer 4. The size calibration measurement of the steel tape measure to be detected is realized through the image processing software installed on the computer 4. The error caused by the human eye reading can be effectively avoided. The data is read by the image processing software. The error or mistake caused by the manual operation can be effectively avoided.

[0027] It should be noted that the computer 4 and the image processing software are all existing devices and software. They do not belong to the improved content of the utility model. In the embodiment, the image processing software processes the image collected by the industrial camera 5. The indication error between the scale line on the steel tape measure to be detected and the standard steel tape measure screw thread line is identified through image processing. When the indication error value is greater than the threshold value, it is determined that the steel tape measure is unqualified. The data is displayed on the screen of the computer 4. The operator can check it.

[0028] Working principle:

[0029] a. In the embodiment, the industrial camera 5 uses two magnifications of 10 times and 20 times.

[0030] b. In the 10 times field of view, the main scale lines of the standard steel tape measure and the steel tape measure to be detected are identified at the detection point. The indication error of the two main scale lines is preliminarily screened (according to JJG4-2015 for I level ruler, for 5 meter detection table, the longest place (5m), the indication error of the two main scale lines). When the indication error of the two main scale lines (the pre-screening condition at this place can be adjusted according to the grade of the steel tape measure), it is determined that the steel tape measure to be detected is unqualified. When the indication error meets the pre-screening requirement, the industrial camera 5 is switched to 20 times.

[0031] c.20 times field of view, the image only has the standard ruler and the two main scale lines of the steel tape to be measured, the industrial camera 5 identifies the edges of the two scale lines and automatically draws the center lines of the scale lines; the indication error of the two main scale lines is completed by the following steps: the industrial camera 5 measures the distance X between the center lines of the scale lines, and according to the positions of the center lines of the main scale lines of the standard ruler and the steel tape to be measured, if A is on the left side of B, the indication error is reported as “+X”, and vice versa.

[0032] Embodiment Two

[0033] The second embodiment of the steel tape detection device is similar to the first embodiment, and the difference is that the second embodiment further comprises a fine adjustment platform 6 and an XY fine adjustment mechanism 12 for adjusting the XY direction position; the XY fine adjustment mechanism 12 is installed on the movable support 3, the fine adjustment platform 6 is connected with the movable end of the XY fine adjustment mechanism 12, and the industrial camera 5 is installed on the fine adjustment platform 6. The linear movement platform moves the industrial camera 5 to the top of the end of the steel tape (the reading position), and adjusts the position of the industrial camera 5 in the XY direction through the XY fine adjustment mechanism 12, so that the industrial camera 5 can face the scale line directly, avoiding the visual error caused by the position deviation and improving the accuracy of data acquisition.

[0034] The XY fine adjustment mechanism 12 comprises an X-axis linear fine adjustment mechanism and a Y-axis linear fine adjustment mechanism; the Y-axis linear fine adjustment mechanism is installed on the movable support 3 and is arranged in parallel with the linear movement mechanism 2; the fixed end of the X-axis linear fine adjustment mechanism is connected with the movable end of the Y-axis linear fine adjustment mechanism; and the fine adjustment platform 6 is connected with the movable end of the X-axis linear fine adjustment mechanism. In order to improve the stability of the fine adjustment platform 6, a sliding guide rail 10 can be arranged between the fine adjustment platform 6 and the movable support, which can support and improve the stability of the fine adjustment platform 6.

[0035] In the embodiment, the X-axis linear fine adjustment mechanism and the Y-axis linear fine adjustment mechanism each comprise a linear sliding rail, an adjusting screw, a moving block and an adjusting knob; the adjusting screw is rotatably installed on the linear sliding rail, the moving block is sleeved on the adjusting screw and is threadedly connected with the adjusting screw; the moving block is slidably connected with the linear sliding rail; the adjusting knob is connected with one end of the adjusting screw; the linear sliding rail of the Y-axis linear fine adjustment mechanism is installed on the movable support 3, the linear guide rail 10 of the X-axis linear fine adjustment mechanism is connected with the moving block of the Y-axis linear fine adjustment structure, and the fine adjustment platform 6 is connected with the moving block of the X-axis linear fine adjustment mechanism. The pitch of the thread of the adjusting screw of the X-axis linear fine adjustment mechanism and the Y-axis linear fine adjustment mechanism is small, and when the adjusting screw is rotated, the moving block moves a small distance, so as to realize the fine adjustment in the XY direction.

[0036] Embodiment Three

[0037] The third embodiment of the steel tape detection device is similar to the first embodiment or the second embodiment, and the difference is that the linear movement mechanism 2 includes a driving motor 8, a transmission screw rod 9, a guide rail 10, and a sliding block 11 in the third embodiment. The guide rail 10 is installed on the detection platform 1, the transmission screw rod 9 is rotatably installed on the guide rail 10, the output end of the driving motor 8 is connected with one end of the transmission screw rod 9, the sliding block 11 is sleeved on the transmission screw rod 9 and is threadedly connected with the transmission screw rod 9, and the sliding block 11 is slidably connected with the guide rail 10. The movable support 3 is installed on the sliding block 11. The driving motor 8 drives the transmission screw rod 9 to rotate. Since the sliding block 11 is threadedly connected with the transmission screw rod 9 and the sliding block 11 is slidably connected with the guide rail 10, the transmission screw rod 9 rotates to drive the sliding block 11 to move along the transmission screw rod 9, thereby realizing linear movement.

[0038] In the third embodiment, two groups of linear movement mechanisms 2 are arranged on the two sides of the detection platform 1, and the two groups of linear movement mechanisms 2 are arranged in parallel. The linear movement mechanisms 2 are arranged on the two sides of the detection platform 1, and the two sides of the movable support 3 are connected with the two groups of linear movement mechanisms 2, so that the stability of the movable support 3 can be improved, the shaking of the movable support 3 during movement can be avoided, and the stability of the whole device can be improved.

[0039] In the third embodiment, the movable support 3 has a portal frame structure, and the two sides of the movable support 3 are connected with the sliding blocks 11 of the two groups of linear movement mechanisms 2. The portal frame structure is stable, and the fine adjustment platform 6 and the XY fine adjustment mechanism 12 can be conveniently installed.

[0040] Embodiment four

[0041] The fourth embodiment of the steel tape detection device is similar to the first embodiment, and the difference is that the fourth embodiment further includes a mounting bracket 7. The mounting bracket 7 includes a first support rod and a second support rod. The first support rod is vertically fixed on the movable support 3, and one end of the second support rod is detachably connected with the first support rod. A plurality of mounting holes for mounting the first support frame are arranged along the height direction of the first support rod. The industrial camera 5 is installed on the first support rod. The plurality of mounting holes can be used to adjust the position of the second support rod, so as to adjust the mounting height of the industrial camera 5.

[0042] In the fourth embodiment, the industrial camera 5 is rotatably connected with the first support rod through a universal shaft. The angle of the industrial camera 5 can be adjusted through the universal shaft, so that the industrial camera 5 can be more accurately photographed, and the precision of data acquisition can be improved.

[0043] Embodiment five

[0044] The fourth embodiment of the steel tape detection device is similar to the first embodiment or the second embodiment, and the difference is that the movable support 3 and the sliding block 11 are detachably connected in the fourth embodiment.

[0045] In the specific contents of the above specific embodiments, any non-contradictory combination of technical features can be made, and in order to make the description simple, all possible combinations of the above technical features are not described, but as long as the combination of the technical features does not exist, it should be considered as the scope of the description.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A tape measure testing device comprising a testing platform (1), characterized in that, The device further comprises a linear moving mechanism (2), a movable support (3), a computer (4) and an industrial camera (5), the linear moving mechanism (2) is arranged along the length direction of the detection platform (1), the movable support (3) is installed on the linear moving mechanism (2) and can slide back and forth along the linear moving mechanism (2), the industrial camera (5) is installed on the movable support (3), the signal output end of the industrial camera (5) is in communication connection with the computer (4), the device further comprises a fine adjustment platform (6) and an XY fine adjustment mechanism (12) for adjusting the position of the fine adjustment platform (6) in the XY direction, the XY fine adjustment mechanism (12) is installed on the movable support (3), the fine adjustment platform (6) is connected with the XY fine adjustment mechanism (12), the industrial camera (5) is installed on the fine adjustment platform (6), the XY fine adjustment mechanism (12) comprises an X-axis linear fine adjustment mechanism and a Y-axis linear fine adjustment mechanism, the Y-axis linear fine adjustment mechanism is installed on the movable support (3) and is arranged in parallel with the linear moving mechanism (2), the fixed end of the X-axis linear fine adjustment mechanism is connected with the movable end of the Y-axis linear fine adjustment mechanism, and the fine adjustment platform (6) is connected with the movable end of the X-axis linear fine adjustment mechanism.

2. The tape measure detection apparatus of claim 1, wherein, The linear moving mechanism (2) comprises a driving motor (8), a transmission screw rod (9), a guide rail (10) and a sliding block (11), the guide rail (10) is installed on the detection platform (1), the transmission screw rod (9) is rotatably installed on the guide rail (10), the output end of the driving motor (8) is connected with one end of the transmission screw rod (9), the sliding block (11) is sleeved on the transmission screw rod (9) and is in threaded connection with the transmission screw rod (9), and the sliding block (11) is in sliding connection with the guide rail (10), and the movable support (3) is installed on the sliding block (11).

3. The tape measure detection apparatus of claim 2, wherein, Two sets of linear moving mechanisms (2) are arranged on the two sides of the detection platform (1) respectively, and the two sets of linear moving mechanisms (2) are arranged in parallel, and the movable supports (3) are connected with the two sets of linear moving mechanisms (2) respectively.

4. The tape measure detection apparatus of claim 3, wherein, The movable support (3) is in the form of a portal frame structure, and the two sides of the movable support (3) are connected with the sliding blocks (11) of the two sets of linear moving mechanisms (2) respectively.

5. The tape measure testing apparatus of claim 2, wherein, The movable support (3) and the sliding block (11) are detachably connected.

6. The tape measure testing apparatus of claim 1, wherein, The X-axis linear fine adjustment mechanism and the Y-axis linear fine adjustment mechanism both comprise a linear sliding rail, an adjusting screw rod, a moving block and an adjusting knob, the adjusting screw rod is rotatably installed on the linear sliding rail, the moving block is sleeved on the adjusting screw rod and is in threaded connection with the adjusting screw rod, the moving block is in sliding connection with the linear sliding rail, the adjusting knob is connected with one end of the adjusting screw rod, the linear sliding rail of the Y-axis linear fine adjustment mechanism is installed on the movable support (3), the linear guide rail (10) of the X-axis linear fine adjustment mechanism is connected with the moving block of the Y-axis linear fine adjustment mechanism, and the fine adjustment platform (6) is connected with the moving block of the X-axis linear fine adjustment mechanism.

7. The tape measure testing apparatus of any one of claims 1 to 6, wherein, Further comprising a mounting frame (7), the mounting frame (7) comprising a first support rod and a second support rod, the first support rod being vertically fixed on the movable support (3), one end of the second support rod being detachably connected with the first support rod; a plurality of mounting holes for mounting a first support frame are arranged along the height direction of the first support rod; the industrial camera (5) is mounted on the first support rod.

8. The tape measure detection apparatus of claim 7, wherein, The industrial camera (5) is rotationally connected with the first support rod through a universal shaft.

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