Detection device for monitoring rotation angle by using linear displacement

Abstract

The utility model provides a detection device for monitoring a rotation angle by using linear displacement, which is applied to the technical field of re-judgment detectors. According to the technical scheme, the device is characterized by comprising a mounting frame, a detection camera arranged on the mounting frame, a driving assembly for driving the detection camera to rotate and a conversion monitoring assembly for converting the rotation angle of the detection camera into linear displacement for monitoring; the device has the technical effects that the driving assembly is used for driving the detection camera to rotate, the detection camera can rotate by more than 360 degrees, no blind area exists in product detection, all-around detection is realized, and the re-judgment detection efficiency is improved; the conversion monitoring assembly converts the rotation angle of the detection camera into linear displacement for monitoring, thereby facilitating the improvement of the precision of the rotation angle of the detection camera, and further improving the detection precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of detection machine of complex judgment relates to a detection device of monitoring rotation angle by linear displacement. BACKGROUND

[0002] SMT is surface assembly technology (surface mount technology), is called surface mount or surface mount technology, is the most popular technology and process in the current electronic assembly industry;SMT basic process elements include: silk screen (or dispensing), mounting (curing), reflow soldering, cleaning, detection, repair;

[0003] Among them, the PCB appearance defect detection has been a problem in the industry, the traditional visual detection algorithm often faces the problem of high false alarm rate when dealing with PCB defects because of complex detection background and numerous defect types;Therefore, the complex judgment detection is a process engineering that must be passed in the PCB production process, but in the existing complex judgment detection machine using process, the detection camera of the complex judgment detection mechanism is not flexible enough, and the blind area phenomenon is often encountered, thereby leading to incomplete product complex judgment detection, and further causing low complex judgment detection efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a detection device of monitoring rotation angle by linear displacement, which has the advantages of 360° or more rotation of the detection camera, no blind area for product detection, full-range detection, and improved complex judgment detection efficiency.

[0005] To achieve the above object and other related objects, the utility model provides the following technical scheme.

[0006] A detection device of monitoring rotation angle by linear displacement, comprising a mounting frame, a detection camera arranged on the mounting frame, a driving assembly for driving the detection camera to rotate, and a conversion and monitoring assembly for converting the rotation angle of the detection camera into linear displacement for monitoring.

[0007] In an embodiment of the utility model, the driving assembly comprises a driving member fixed on the mounting frame, a driving gear rotatably connected to the mounting frame and connected to the driving end of the driving member.

[0008] In an embodiment of the utility model, the driving end of the driving member is connected with a rotating shaft rotatably connected to the mounting frame, the bottom of the rotating shaft is fixedly provided with a mounting column, the detection camera is fixedly arranged on the mounting column, and the driving gear is sleeved on the mounting column and fixedly connected with the mounting column.

[0009] In an embodiment of the utility model, the conversion monitoring assembly includes a driven gear rotatably connected to the mounting rack and meshingly connected with the driving gear, a screw shaft threadedly connected with the driven gear, and a limiting plate fixed to the bottom of the screw shaft; the limiting plate is fixedly connected with an origin sensing sheet and a limit sensing sheet;

[0010] The mounting rack is fixedly provided with an origin sensor and a limit sensor matched with the origin sensing sheet and the limit sensing sheet.

[0011] In an embodiment of the utility model, the limiting plate is fixedly provided with a guide shaft slidably connected with the mounting rack.

[0012] In an embodiment of the utility model, the driven gear is fixedly provided with a transmission block rotatably connected to the mounting rack, and a threaded hole threadedly connected with the screw shaft is formed in the center of the transmission block.

[0013] In an embodiment of the utility model, the origin sensing sheet and the limit sensing sheet are respectively fixed to the two ends of the limiting plate; the origin sensor and the limit sensor are respectively fixed to the two sides of the mounting rack.

[0014] The setting height of the origin sensor is lower than that of the limit sensor; the length of the limit sensing sheet is less than that of the origin sensing sheet.

[0015] In an embodiment of the utility model, the utility model further includes a support rack, a linear module fixed to the support rack, and the mounting rack is arranged on the linear module.

[0016] The support rack is fixedly provided with an upper limit position sensor and a lower limit position sensor; the mounting rack is fixedly provided with an upper limit sensing sheet and a lower limit sensing sheet; and the mounting column is fixedly provided with a laser sensor.

[0017] As described above, the utility model discloses a detection device for monitoring rotation angle by linear displacement, which has the following beneficial effects:

[0018] 1. The driving assembly is used for driving the detection camera to rotate, the detection camera has a rotation of more than 360°, product detection has no blind area, omnidirectional detection is realized, and the re-detection efficiency is improved; the conversion monitoring assembly converts the rotation angle of the detection camera into linear displacement for monitoring, so that the accuracy of the rotation angle of the detection camera is improved, and the detection accuracy is further improved.

[0019] 2. The driving component drives the drive gear to rotate. The drive gear meshes with the driven gear, and the drive gear drives the driven gear to rotate. The driven gear is connected to the screw shaft through a transmission block. The screw shaft drives the limit plate to slide vertically up and down. The limit plate is equipped with an origin sensing plate and an extreme sensing plate. An origin sensor and an extreme sensor are fixedly mounted on the mounting bracket. The origin sensing plate and the origin sensor work together to limit the initial position of the detection camera. The extreme sensing plate and the extreme sensor work together to limit the maximum rotational position of the detection camera. Thus, the rotation angle of the detection camera is limited to the required detection range.

[0020] 3. The laser sensor measures the distance and calculates the difference from the initial value. This difference is then provided to the linear module, which drives the mounting bracket and moves the inspection camera vertically up and down to adjust the inspection distance. This allows for the inspection of PCBs of different thicknesses and components of different heights, greatly enhancing the inspection effect and improving production efficiency.

[0021] The upper limit sensor and the upper limit sensor work together to limit the maximum upward displacement of the mounting bracket, while the lower limit sensor and the lower limit sensor work together to limit the maximum downward displacement of the mounting bracket; thus limiting the vertical sliding distance of the detection camera to within the required detection range. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model from the right side view;

[0023] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model from the left side.

[0024] Figure 3 This is a schematic diagram of the connection relationship between the driving gear and the driven gear in an embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram of the conversion monitoring component according to an embodiment of the present invention.

[0026] Reference numerals: 1. Mounting bracket; 2. Detection camera; 3. Drive assembly; 31. Drive component; 32. Drive gear; 33. Rotary shaft; 34. Mounting column; 4. Conversion monitoring assembly; 41. Driven gear; 42. Screw shaft; 43. Limit plate; 44. Origin sensor; 45. Limit sensor; 46. Origin sensor; 47. Limit sensor; 48. Guide shaft; 49. Transmission block; 5. Support frame; 6. Linear module; 7. Upper limit sensor; 8. Lower limit sensor; 9. Upper limit sensor; 10. Lower limit sensor; 11. Laser sensor; 12. Slider; 13. Fixing bracket; 14. Supplementary light. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0028] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0029] Please see Figure 1 and Figure 2 This utility model provides a detection device for monitoring rotation angle using linear displacement, including a support frame 5 and a mounting frame 1, a detection camera 2, a drive assembly 3 for driving the detection camera 2 to rotate, and a conversion monitoring assembly 4 for converting the rotation angle of the detection camera 2 into linear displacement for monitoring.

[0030] The drive assembly 3 includes a drive component 31 and a drive gear 32. In this embodiment, the drive component 31 is a servo motor. The servo motor is bolted to the mounting bracket 1. The output shaft of the servo motor is connected to a rotating shaft 33. The rotating shaft 33 is vertically rotatably connected to the support bracket 5 through a bearing. The bottom of the rotating shaft 33 is bolted to a mounting post 34. The drive gear 32 is sleeved on the mounting post 34 and fixedly connected to the mounting post 34.

[0031] Mounting column 34 is bolted to mounting bracket 13, and inspection camera 2 is bolted to mounting bracket 13. Supplementary lights 14 are bolted to mounting bracket 13 located on both sides of inspection camera 2.

[0032] Please see Figure 3 and Figure 4The conversion monitoring component 4 includes a driven gear 41, a screw shaft 42, a limiting plate 43, a home point sensing plate 44, and a limit sensing plate 45. The driven gear 41 is meshed with the driving gear 32. A transmission block 49 is bolted to the middle of the driven gear 41. The transmission block 49 is coaxially arranged with the driven gear 41 and is rotatably connected to the mounting frame 1 through a bearing. A threaded hole is opened in the center of the transmission block 49, and the screw shaft 42 is threadedly connected to the screw shaft 42 through the threaded hole. Guide shafts 48 that are slidably connected to the mounting frame 1 are bolted to the limiting plates 43 on both sides of the screw shaft 42.

[0033] The limiting plate 43 is fixedly installed at the bottom of the screw shaft 42, wherein the origin sensing plate 44 and the limit sensing plate 45 are respectively bolted to both ends of the limiting plate 43; the mounting bracket 1 is bolted to both sides with the origin sensor 46 and the limit sensor 47, which cooperate with the origin sensing plate 44 and the limit sensor 45; the setting height of the origin sensor 46 is lower than the setting height of the limit sensor 47, and the length of the limit sensor 45 is less than the length of the origin sensing plate 44; the origin sensing plate 44 and the origin sensor 46 cooperate to limit the initial position of the detection camera 2, and the limit sensor 45 and the limit sensor 47 cooperate to limit the maximum rotation position of the detection camera 2; thereby limiting the rotation angle of the detection camera 2.

[0034] Please see Figure 1 and Figure 2 A linear module 6 is vertically fixed on the support frame 5. In this embodiment, the linear module 6 can be a screw-driven linear module, wherein a slider 12 is threadedly connected to the screw in the screw-driven linear module, and the mounting frame 1 is fixedly mounted on the slider 12. A laser sensor 11 is bolted to the mounting column 34. The distance is measured by the laser sensor 11, and then the difference with the initial value is calculated. The difference is then provided to the linear module 6. The linear module 6 drives the mounting frame 1 and drives the detection camera 2 to slide vertically up and down, thereby adjusting the detection distance. This can realize the detection of PCBs of different thicknesses and components of different heights.

[0035] An upper limit sensor 7 is bolted to the support frame 5, and an upper limit sensing plate 9 that cooperates with the upper limit sensor 7 is bolted to the mounting frame 1; a lower limit sensor 8 is bolted to the upper part of the linear module 6, and a lower limit sensing plate 10 that cooperates with the lower limit sensor 8 is bolted to the slider 12; the upper limit sensing plate and the upper limit sensor 7 cooperate to limit the maximum upward sliding displacement of the mounting frame 1, and the lower limit sensing plate 10 cooperates with the lower limit sensor 8 to limit the maximum downward sliding displacement of the mounting frame 1; thereby limiting the vertical sliding distance of the detection camera 2 within the required detection range.

[0036] Brief description of the usage process: The laser sensor 11 measures the distance, calculates the difference from the initial value, and then provides the difference to the linear module 6. The linear module 6 drives the mounting bracket 1 and causes the detection camera 2 to slide vertically up and down, thereby adjusting the detection distance. The drive component 31 drives the active gear 32 to rotate, and the active gear 32 drives the driven gear 41 to rotate. The driven gear 41 is connected to the screw shaft 42 through the transmission block 49. The rotation of the driven gear 41 drives the screw shaft 42 to move vertically up and down, which in turn drives the limit plate 43 to slide vertically up and down. The origin sensor 46 and the limit sensor 47 control the starting point and range of rotation.

[0037] In summary, the driving component 3 of this invention drives the inspection camera 2 to rotate, enabling the camera 2 to rotate more than 360°, eliminating blind spots in product inspection, achieving omnidirectional inspection, and improving the efficiency of re-judgment inspection. The conversion monitoring component 4 converts the rotation angle of the inspection camera 2 into linear displacement for monitoring, which facilitates the improvement of the accuracy of the rotation angle of the inspection camera 2, thereby improving the inspection accuracy. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A detection device for monitoring a rotational angle using linear displacement, characterized by: The utility model provides a kind of detection camera rotating mechanism, including mounting frame (1), the detection camera (2) being arranged on mounting frame (1), the drive component (3) for driving detection camera (2) rotation and the conversion monitoring component (4) for converting the rotation angle of detection camera (2) into linear displacement to monitor, the drive component (3) includes fixed on mounting frame (1) driving part (31), with the action end of driving part (31) connection and rotationally connected on mounting frame (1) driving gear (32), the output shaft of the driving part (31) is connected with rotating shaft (33), the bottom of the rotating shaft (33) is bolted with mounting column (34), the driving gear (32) is set on the mounting column (34) and is fixedly connected with the mounting column (34), mounting column (34) is bolted with fixed frame (13) on, detection camera (2) is bolted on fixed frame 13;The conversion monitoring component (4) includes rotationally connected on mounting frame (1) and meshingly connected with driving gear (32) driven gear (41), with driven gear (41) screw thread connection screw rod shaft (42) and fixed on the bottom of screw rod shaft (42) limiting plate (43), the middle part of the driven gear (41) is bolted with transmission block (49), transmission block (49) is coaxially arranged with driven gear (41), transmission block (49) is rotationally connected on mounting frame (1) by bearing, transmission block (49) center is provided with screw hole and is screw thread connected with the screw rod shaft (42), the limiting plate (43) is fixedly provided with guide shaft (48) with the sliding connection of mounting frame (1).

2. The detection device for monitoring the rotation angle by linear displacement according to claim 1, characterized in that: The action end of the driving part (31) is connected with the rotating shaft (33) rotationally connected on the mounting frame (1), the bottom of the rotating shaft (33) is fixedly provided with the mounting column (34), and the detection camera (2) is fixedly provided on the mounting column (34).

3. The detection device for monitoring the rotation angle by linear displacement according to claim 1, characterized in that: The limiting plate (43) is fixedly connected with the origin sensing sheet (44) and the limit sensing sheet (45); The mounting frame (1) is fixedly provided with the origin sensor (46) and the limit sensor (47) matched with the origin sensing sheet (44) and the limit sensing sheet (45).

4. The detection device for monitoring the rotation angle by linear displacement according to claim 1, characterized in that: The driven gear (41) is fixedly provided with the transmission block (49) rotationally connected on the mounting frame (1), and the transmission block (49) is provided with a screw hole in the center and screw thread connected with the screw rod shaft (42).

5. The detection device for monitoring the rotation angle by linear displacement according to claim 3, characterized in that: The origin sensing sheet (44) and the limit sensing sheet (45) are respectively fixed at two ends of the limiting plate (43); The origin sensor (46) and the limit sensor (47) are respectively fixed on two sides of the mounting frame (1). The setting height of the origin sensor (46) is lower than that of the limit sensor (47); The length of the limit sensing sheet (45) is less than that of the origin sensing sheet (44).

6. The detection device for monitoring the rotation angle by linear displacement according to claim 3, characterized in that: Also include support frame (5), fixed on the linear module (6) of support frame (5), the mounting frame (1) is arranged on linear module (6); The upper limit sensor (7) and the lower limit sensor (8) are fixedly arranged on the support frame (5); The upper limit sensing sheet (9) and the lower limit sensing sheet (10) are fixedly arranged on the mounting frame (1); The laser sensor (11) is fixedly arranged on the mounting column (34).

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