Dimension measuring device

Abstract

The utility model discloses a size measuring device. The size measuring device comprises a machine table, a mounting frame, a camera module, a first driving mechanism, a code spraying module and a second driving mechanism. The camera module comprises a plurality of top cameras which are arranged on the mounting frame and arranged in the width direction of the machine table, and the first driving mechanism is in driving connection with the mounting frame and used for driving the camera module to move in the length direction of the machine table so as to scan workpieces on the machine table. The code spraying module comprises a code spraying head connected with the mounting frame, and the second driving mechanism is arranged on the mounting frame and used for driving the code spraying head to move in the width direction of the machine table. The size measuring device can obtain the size information of the workpiece according to the overall image information of the workpiece obtained through scanning of the camera module and the image information, so that whether the actual size of the workpiece is qualified or not is judged, and the efficiency of the visual detection mode is higher. And the size information and the judgment result are sprayed on a set area on the surface of the workpiece through a code spraying module for subsequent processing and tracing.

Description

Technical Field

[0001] The present application relates to the field of mechanical equipment, and in particular to a dimension measuring device. Background Art

[0002] In the heavy industry, the flatness and camber of steel plates directly affect the stability of the subsequent welding process. For leveled steel plates, manual measurement has always been used, and only random inspections can be done for each batch, which cannot guarantee the most effective quality control. Manual measurement of steel plates is inefficient. Utility Model Content

[0003] The present application proposes a dimension measuring device, which aims to solve the problem of low efficiency in current manual dimension measurement of steel plates.

[0004] The present application proposes a size measuring device, comprising:

[0005] Machine table, used to mount the workpiece;

[0006] A mounting frame, comprising a mounting portion located above the machine platform;

[0007] A camera module, comprising a plurality of top cameras disposed on the mounting portion, wherein the top cameras are arranged along the width direction of the platform, and the shooting direction is vertically downward and toward the platform;

[0008] A first driving mechanism is drivingly connected to the mounting frame, and the driving direction is along the length direction of the machine platform;

[0009] The coding module comprises a coding terminal connected to the mounting frame, wherein the coding terminal is arranged toward the machine platform;

[0010] The second driving mechanism is arranged on the mounting frame and is drivingly connected to the spraying platform. The driving direction of the second driving mechanism is along the width direction of the machine platform.

[0011] In some embodiments, there is overlap in the fields of view between adjacent top cameras.

[0012] In some embodiments, a plurality of rollers are arranged side by side on the platform, and the rollers are arranged along the length direction of the platform.

[0013] In some embodiments, the mounting frame includes a gantry, the gantry includes a crossbeam as the mounting portion, and the second driving mechanism is disposed on the crossbeam.

[0014] In some embodiments, the first driving mechanism includes a ground rail arranged parallel to the length direction of the machine platform, and the lower end of the gantry is slidably connected to the ground rail.

[0015] In some embodiments, the first drive mechanism further comprises a linear motor drivingly connected to the mounting frame.

[0016] In some embodiments, the second driving mechanism further includes a guide rail disposed on the crossbeam and arranged along the width direction of the machine platform, and a bracket slidably connected to the guide rail, and the spray station is disposed on the bracket.

[0017] In some embodiments, the second driving mechanism further comprises:

[0018] A rack, disposed on the crossbeam and parallel to the guide rail;

[0019] A first motor is disposed on the mounting frame and is located on one side of the rack;

[0020] The gear is disposed on the rotating shaft of the first motor and meshes with the rack.

[0021] The technical effects of the size measuring device in this application are as follows:

[0022] The dimension measuring device includes a machine, a mounting frame, a camera module, a first driving mechanism, a coding module and a second driving mechanism. The camera module includes a plurality of top cameras arranged along the width direction of the machine and arranged on the mounting frame. The first driving mechanism is connected to the mounting frame for driving the camera module to move along the length direction of the machine to scan the workpiece on the machine. The coding module includes a spray terminal connected to the mounting frame. The second driving mechanism is arranged on the mounting frame for driving the spray terminal to move along the width direction of the machine. The dimension measuring device can obtain the overall image information of the workpiece based on the scanning of the camera module, and obtain the dimension information of the workpiece based on the image information, so as to judge whether the actual size of the workpiece is qualified. The visual inspection method is more efficient. The above-mentioned dimension information and judgment results are sprayed on the set area on the surface of the workpiece through the coding module for subsequent processing and tracing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a size measuring device in one embodiment of the present application;

[0024] Figure 2 for Figure 1 A schematic structural diagram of the dimension measuring device in another perspective in the embodiment.

[0025] 10. Machine platform; 11. Roller; 20. Mounting frame; 21. Mounting part; 22. Connecting frame; 30. Top camera; 40. First driving mechanism; 51. Bracket; 52. Inkjet coding module; 60. Second driving mechanism.

[0026] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] In conjunction with the drawings in the embodiments of the present application, the schemes in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments in the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0029] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] This application proposes a size measuring device, referring to Figure 1 and Figure 2 The dimension measuring device includes: a machine 10 for mounting a workpiece; a mounting frame 20, including a mounting portion 21 located above the machine 10; a camera module, including a plurality of top cameras 30 arranged on the mounting portion 21, the top cameras 30 are arranged along the width direction of the machine 10, and the shooting direction is vertically downward and toward the machine 10; a first driving mechanism 40 is connected to the mounting frame 20 by driving, and the driving direction is along the length direction of the machine 10; a coding module 52, including a coding terminal connected to the mounting frame 20, and the coding terminal is arranged toward the machine 10; a second driving mechanism 60 is arranged on the mounting frame 20 and connected to the coding terminal by driving, and the driving direction of the second driving mechanism 60 is along the width direction of the machine 10.

[0032] In this embodiment, the machine 10 is composed of a support base and marble, and the first driving mechanism 4030 is fixed on the marble. The high-precision detection platform can achieve micron-level positioning accuracy; the workpiece is placed on the machine 10 and the start button is activated. The first driving mechanism 40 is connected to the mounting frame 20 and can drive the camera module to move along the length direction of the machine 10 to scan the workpiece on the machine 10. The inkjet module 52 includes a spray terminal connected to the mounting frame 20, and the second driving mechanism 60 is arranged on the mounting frame 20 to drive the spray terminal to move along the width direction of the machine 10. The size measuring device can obtain the size information of the workpiece according to the overall image information of the workpiece scanned by the camera module, and obtain the size information of the workpiece according to the image information, so as to determine whether the actual size of the workpiece is qualified, and the visual detection method is more efficient. The above-mentioned size information and judgment results are sprayed on the set area on the surface of the workpiece through the inkjet module 52 for subsequent processing and tracing. It is worth noting that the above-mentioned acquisition of workpiece size information based on image information can be achieved by using any image recognition method in the prior art, which will not be described here. The core of the utility model lies in the improvement of the mechanical structure and layout of the detection device. The size measuring device in the embodiment of the present application can not only measure regular geometric plates, but also measure special-shaped plates, and has a wider range of applications.

[0033] In some embodiments, the fields of view of adjacent top cameras 30 overlap. In this embodiment, the mounting frame 20 is also provided with connecting frames 22 distributed along the width direction of the machine 10 side by side, and the top cameras 30 are respectively arranged on the upper part of the connecting frames 22, so that the top camera 30 is located above the mounting frame 20, so that the top camera 30 is farther away from the machine 10, and a larger field of view can be obtained. For the detection of larger plates, the number of top cameras 30 required is smaller and the cost is lower. Of course, the fields of view of each top camera 30 must also overlap so that there are associated pixels when the image is corrected and stitched later. The above-mentioned image correction and stitching can also be achieved using existing graphics processing technology.

[0034] In some embodiments, a plurality of rollers 11 are arranged side by side on the machine 10, and the rollers 11 are arranged along the length direction of the machine 10. In this embodiment, the rollers 11 are arranged to facilitate the movement of the workpiece on the machine 10, and multiple workpieces can be placed and arranged on the machine 10, and the camera module can perform synchronous scanning on the multiple workpieces to improve the measurement efficiency. Of course, the dimension measuring device in the embodiment of the present application also includes a limiting mechanism arranged in the machine 10 and below the rollers 11, and the limiting mechanism includes a limiting jaw and a lifting assembly that drives the limiting jaw to rise and fall. The limiting jaw can be an electromagnetic jaw or a pneumatic jaw. The lifting assembly can use a double-rod cylinder. Multiple sets of limiting jaws can be set, so that the lifting assembly drives the limiting jaw to extend upward between adjacent rollers 11, and the limiting jaw clamps the edge of the workpiece to prevent the vibration generated when the first drive mechanism 40 drives the mounting frame 20 to move from being transmitted to the roller 11, causing the workpiece to deviate and affect the measurement accuracy. Of course, the edge area of ​​the workpiece clamped by the limit clamp may be blocked, and the acquired workpiece image may be incomplete, which can be automatically completed by software. Further, a third driving mechanism can be provided to be connected to the roller 11 to drive the roller 11 to rotate and realize the automatic movement of the workpiece on the machine table 10.

[0035] In some embodiments, the mounting frame 20 is in the form of a gantry, including a column and a crossbeam arranged on the column, the crossbeam can be used as the mounting portion 21 of the mounting frame 20, and the second driving mechanism 60 is arranged on the crossbeam. The gantry can be installed on the machine 10, or it can be separated from the machine 10 and arranged outside the machine. Specifically, the first driving mechanism 40 includes a ground rail arranged parallel to the length direction of the machine 10, and the lower end of the gantry is slidably connected to the ground rail. The vibration generated when the first driving mechanism 40 drives the mounting frame 20 to move can be reduced and transmitted to the machine 10. Further, the first driving mechanism 40 also includes a linear motor connected to the mounting frame 20. The driving end of the linear motor is connected to the column of the mounting frame 20 to drive the mounting frame 20 to move. Of course, a rotary motor can also be used, combined with a screw transmission mechanism or a gear rack transmission mechanism, so that the motor drives the mounting frame 20 to move. It is worth noting that the floor rail is installed on the ground or platform, and an installation groove may be opened on the ground or platform. The floor rail is set in the installation groove, and an accordion-type dust cover is set on both sides of the column to close the upper opening of the installation groove to prevent external dust and impurities from entering the floor rail and affecting the transmission accuracy.

[0036] In some embodiments, the second driving mechanism 60 further includes a guide rail disposed on the crossbeam and arranged along the width direction of the machine 10, and a bracket 51 slidably connected to the guide rail, and the inkjet terminal is disposed on the bracket 51. By setting the second driving mechanism 60, the inkjet terminal can be moved to any position above the workpiece. The position of the workpiece can be obtained by scanning the image information obtained, and the coordinates of the inkjet area of ​​each workpiece can be generated from the position information of each workpiece. The first driving mechanism 40 and the second driving mechanism 60 can drive the inkjet terminal to move above the inkjet area and complete the inkjet operation according to the coordinates of the inkjet area. The inkjet terminal has higher flexibility and avoids the inkjet terminal from being formed outside the workpiece. The inkjet terminal can be an inkjet type inkjet terminal or a laser type inkjet terminal. Further, the bracket 51 is arranged in an L shape, which includes a vertically arranged vertical pole and a horizontal pole arranged at the lower end of the vertical pole. The vertical pole is arranged on the side of the mounting frame 20 away from the connecting frame 22, and one end of the horizontal pole extends toward the side of the mounting frame 20 close to the connecting frame 22. The spraying terminal is arranged at the end of the crossbar facing the mounting frame 20 close to the connecting frame 22 and is directly below the crossbar. The spraying terminal and the top camera 30 have a closer field of view, which can ensure a longer measurement stroke. At the same time, the spraying terminal is spaced apart from the top camera 30 to avoid blocking the field of view of the top camera 30.

[0037] In some embodiments, the second driving mechanism 60 further includes: a rack, which is arranged on the crossbeam and parallel to the guide rail; a first motor, which is arranged on the mounting frame 20 and is located on one side of the rack; a gear, which is arranged on the rotating shaft of the first motor and meshes with the rack. In this embodiment, the second driving mechanism 60 can adopt a gear rack transmission method or a screw transmission method. Specifically, the second driving mechanism 60 further includes: a screw, which is rotatably arranged on the crossbeam and parallel to the guide rail; a second motor, which is arranged on the crossbeam and is drivingly connected to the screw; a nut, which is adapted to the screw and connected to the bracket 51.

[0038] The working principle of the size measuring device in this application is as follows:

[0039] The dimension measuring device includes a machine 10, a mounting frame 20, a camera module, a first driving mechanism 40, a coding module 52, and a second driving mechanism 60. The camera module includes a plurality of top cameras 30 arranged along the width direction of the machine 10 on the mounting frame 20, and the first driving mechanism 40 is drivingly connected to the mounting frame 20, and is used to drive the camera module to move along the length direction of the machine 10 to scan the workpiece on the machine 10. The coding module 52 includes a coding terminal connected to the mounting frame 20, and the second driving mechanism 60 is arranged on the mounting frame 20 to drive the coding terminal to move along the width direction of the machine 10. The dimension measuring device can obtain the overall image information of the workpiece scanned by the camera module, and obtain the size information of the workpiece according to the image information, so as to judge whether the actual size of the workpiece is qualified, and the visual detection method is more efficient. After completing the visual measurement, the first driving mechanism 40 and the second driving mechanism 60 drive the coding module 52 to move above the coding area set on the workpiece, and the coding module 52 sprays the above-mentioned size information and judgment results on the set area on the surface of the workpiece for subsequent processing and traceability.

[0040] The dimension measuring device in the embodiment of the present application has the following advantages:

[0041] It has strong compatibility with the environment and space layout, and can be incorporated into the production line (traditional testing equipment can only be offline), realizing assembly line production. The detection cycle is ≤60s / 10m, which is far superior to traditional testing equipment and can achieve 100% full inspection; it has strong compatibility and can measure all steel plates of different sizes and thicknesses in the factory. The equipment has stable detection accuracy and is more controlled than manual measurement.

[0042] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A dimension measuring device, characterized in that: include: Machine table, used to mount the workpiece; A mounting frame, comprising a mounting portion located above the machine platform; A camera module, comprising a plurality of top cameras disposed on the mounting portion, wherein the top cameras are arranged along the width direction of the platform, and the shooting direction is vertically downward and toward the platform; A first driving mechanism is drivingly connected to the mounting frame, and the driving direction is along the length direction of the machine platform; The coding module comprises a coding terminal connected to the mounting frame, wherein the coding terminal is arranged toward the machine platform; The second driving mechanism is arranged on the mounting frame and is drivingly connected to the spraying platform. The driving direction of the second driving mechanism is along the width direction of the machine platform.

2. The dimension measuring device according to claim 1, characterized in that: There is overlap in the fields of view between adjacent top cameras.

3. The dimension measuring device according to claim 1, characterized in that: A plurality of rollers are arranged side by side on the platform, and the rollers are arranged along the length direction of the platform.

4. The dimension measuring device according to claim 1, characterized in that: The mounting frame includes a gantry frame, the gantry frame includes a crossbeam as the mounting portion, and the second driving mechanism is arranged on the crossbeam.

5. The dimension measuring device according to claim 4, characterized in that: The first driving mechanism comprises a ground rail arranged parallel to the length direction of the machine platform, and the lower end of the gantry is slidably connected to the ground rail.

6. The dimension measuring device according to claim 5, characterized in that: The first driving mechanism also includes a linear motor drivingly connected to the mounting frame.

7. The dimension measuring device according to claim 4, characterized in that: The second driving mechanism further comprises a guide rail disposed on the crossbeam and arranged along the width direction of the machine platform, and a bracket slidably connected to the guide rail, and the spray station is disposed on the bracket.

8. The dimension measuring device according to claim 7, characterized in that: The second driving mechanism further comprises: A rack, disposed on the crossbeam and parallel to the guide rail; A first motor is disposed on the mounting frame and is located on one side of the rack; The gear is disposed on the rotating shaft of the first motor and meshes with the rack.

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