CN109813256B

CN109813256B - Detector for detecting flatness of plane glass by laser

Info

Publication number: CN109813256B
Application number: CN201910177290.XA
Authority: CN
Inventors: 杨子建; 张宏艳; 郑家银; 张啸枫; 郜雪
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2021-10-15
Anticipated expiration: 2039-03-08
Also published as: CN109813256A

Abstract

The invention belongs to the technical field of laser detectors, and particularly relates to a detector for detecting the flatness of planar glass by adopting laser. The flatness of the plane glass is detected by the laser, the accuracy of the detection result is greatly improved, and meanwhile, the mechanical structure adopted by the invention is simple and the operability is strong.

Description

Detector for detecting flatness of plane glass by laser

Technical Field

The invention belongs to the technical field of laser detectors, and particularly relates to a detector for detecting flatness of plane glass by adopting laser.

Background

After the plane glass is processed, quality detection is required, wherein the detection of the flatness of the glass is a crucial flow in the whole detection flow, and the flatness of the glass determines the quality of the glass to a great extent. Most of the existing glass manufacturers recognize the flatness of the glass through human eyes, so that the quality of the glass cannot be ensured; a small number of manufacturers measure the measurement by using existing detection instruments, but the instruments are complex in structure and high in cost.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the detector for detecting the flatness of the plane glass by adopting laser.

The invention is realized by the following technical scheme: the utility model provides an adopt laser to detect detector of plane glass roughness, the detector includes two symmetrical arrangement's measuring device, and measuring device includes the base of long rod type, and the base is fixed on testing platform, is equipped with linear transmission on the base, is equipped with the slider of being connected with the transmission of linear transmission on the linear transmission, is equipped with two sets of laser sensor on the slider, one of them is one set laser sensor establish the lower surface at the slider, another set laser sensor establish on the linear guide of slider side, the laser emission unit that is laser sensor entirely that arranges on one of them measuring device of detector, the laser receiving unit that is laser sensor entirely that arranges on another measuring device of detector.

Furthermore, the linear transmission device comprises stepping motors positioned at two ends of the base and winding rollers in transmission connection with the corresponding stepping motors, the middle parts of the winding rollers are of annular groove structures, and two ends of the transmission line are in transmission connection with the two winding rollers respectively; the free end of the transmission line is welded on the winding roller, and the sliding block is in transmission connection with the transmission line.

Furthermore, a positioning slide block matched with the linear guide rail is installed on the linear guide rail, and a laser sensor on the linear guide rail is arranged on the lower surface of the positioning slide block.

Furthermore, the lower surface of the positioning sliding block is provided with a support, the support is provided with a lead screw, two ends of the lead screw are supported by bearing supports, the lead screw is sleeved with a nut seat in transmission connection, a laser sensor on the positioning sliding block is installed on the nut seat, and the support is further provided with a clamping block for limiting the axial movement of the nut seat.

Further, the base pass through fixing device to be fixed on testing platform, fixing device includes that the middle part is equipped with the screwed bracing piece, the screw thread section at the bracing piece is fixed with the base to the set nut that is located the base both sides, one side free end of bracing piece is equipped with the industry sucking disc.

The invention has the beneficial effects that: the flatness of the plane glass is detected by using laser according to the light refraction principle, the accuracy of the detection result is greatly improved, and meanwhile, the mechanical structure adopted by the invention is simple, the operability is strong, and the cost of the whole set of detection instrument is low.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the test device of the present invention;

FIG. 3 is a top view of the detection device of the present invention;

FIG. 4 is a left side view of the test device of the present invention;

FIG. 5 is a right side view of the test device of the present invention;

FIG. 6 is a schematic perspective view of a positioning block and a component mounted on the positioning block according to the present invention;

in the figure, the device comprises a base 1, a base 2, a linear transmission device 2-1, a winding roller 2-2, a stepping motor 2-3, a transmission line 3, a fixing device 3-1, a positioning nut 3-2, an industrial sucker 3-3, a support rod 4-1, a sliding block 4-2, a linear guide rail 4-3, a positioning sliding block 4-4, a laser sensor 4-4-1, a light emitting unit 4-4-2, a laser receiving unit 4-5, a clamping block 4-6, a nut seat 4-7, a lead screw 4-8, a bearing support 4-9, a polish rod 4-10 and a support.

Detailed Description

The invention is further illustrated below with reference to the figures and examples.

As shown in fig. 1-6, a detector for detecting flatness of planar glass by using laser comprises two symmetrically arranged measuring devices, each measuring device comprises a long rod-shaped base 1, the base 1 is fixed on a detection platform, a linear transmission device 2 is arranged on the base 1, a slide block 4-1 in transmission connection with the linear transmission device 2 is arranged on the linear transmission device 2, two sets of laser sensors 4-4 are arranged on the slide block 4-1, one set of the laser sensors 4-4 is arranged on the lower surface of the slide block 4-1, and the other set of the laser sensors 4-4 is arranged on a linear guide rail 4-2 on the side surface of the slide block 4-1; one measuring device of the detector is provided with a laser emitting unit 4-4-1 which is a laser sensor 4-4, and the other measuring device of the detector is provided with a laser receiving unit 4-4-2 which is a laser sensor 4-4. A beam of parallel light vertically irradiates to a transparent uniform medium, and if the upper surface and the lower surface of the medium are parallel and the inside of the medium is uniform, the light continuously advances along the original direction after penetrating through the medium; if the light is irradiated to the surface of the wedge-shaped medium or the inner part of the wedge-shaped medium has inhomogeneity such as bubbles, the direction of the light transmitted through the medium deviates. The laser sensor 4-4 arranged on the lower surface of the sliding block 4-1 has the function of feeding back the movement position, so that the sliding blocks 4-1 on the two measuring devices of the detector can move synchronously. The laser sensor 4-4 on the linear guide rail 4-2 is used for detecting whether the glass is flat or not, when the laser emitting unit 4-4-1 of the laser sensor 4-4 emits laser which penetrates through the interior of the plane glass and is received by the laser receiving unit 4-4-2 of the laser sensor 4-4, the flatness of the surface glass meets the quality requirement, if the laser emitting unit 4-4-1 of the laser sensor 4-4 emits laser which penetrates through the interior of the plane glass and is not received by the laser receiving unit 4-4-2 of the laser sensor 4-4, the surface glass or the interior of the surface glass has uneven conditions such as bubbles, and the flatness of the glass does not meet the quality requirement.

As an improvement of the embodiment, the linear transmission device 2 comprises stepping motors 2-2 positioned at two ends of the base 1 and winding rollers 2-1 in transmission connection with the corresponding stepping motors 2-2, the middle parts of the winding rollers 2-1 are of annular groove structures, and two ends of a transmission line 2-3 are respectively in transmission connection with the two winding rollers 2-1; the free end of the transmission line 2-3 is welded on the winding roller 2-1, and the sliding block 4-1 is in transmission connection with the transmission line 2-3. Meanwhile, the embodiment also provides another linear transmission device, the transmission line 2-3 in the embodiment is replaced by a ball screw, bearing seats are arranged at two ends of the ball screw for supporting, one end of the ball screw is in transmission connection with the stepping motor through a coupler, the sliding block 4-1 is in transmission relation with the ball screw through being fixed with the nut seat, a sliding sleeve is additionally arranged on the nut seat or the sliding block 4-1, and the sliding sleeve is sleeved on a feed rod along the axial movement direction of the ball screw, so that the sliding block 4-1 can only make linear movement under the driving of the ball screw.

As an improvement of the embodiment, a positioning slide block 4-3 matched with the linear guide rail 4-2 is arranged on the linear guide rail 4-2, and a laser sensor 4-4 on the linear guide rail 4-2 is arranged on the lower surface of the positioning slide block 4-3. During installation, the lower laser sensor is calibrated by manually adjusting the screw rod and the guide rail in advance, and then the laser sensor is fixed to keep the relative position of the lower laser sensor and the upper laser sensor fixed.

As an improvement of this embodiment, as shown in fig. 6, a support 4-10 is provided on a lower surface of the positioning slider 4-3, a lead screw 4-7 is provided on the support 4-10, two ends of the lead screw 4-7 are supported by bearing supports 4-8, a nut seat 4-6 in transmission connection is sleeved on the lead screw 4-7, a laser sensor 4-4 on the positioning slider 4-3 is installed on the nut seat 4-6, and a clamping block 4-5 for limiting a circumferential motion of the nut seat 4-6 is further provided on the support 4-10. The clamping block 4-5 is used for ensuring that the laser sensor 4-4 fixed on the nut seat 4-6 at the lower part can only do axial movement, and considering that the measuring devices at the two sides can not be absolutely parallel, a lead screw 4-7 transmission mechanism is arranged to enable the nut seat 4-6 to move, so that the laser receiving unit 4-4-1 can be just aligned with the laser emitting unit 4-4-2 at the other side. The clamping blocks 4-5 are screwed in the screws through the screw holes on the upper surfaces and fixed on the bracket. The nut seat 4-6 can achieve the purpose of axial movement by rotating the polish rod 4-9 of the lead screw 4-7.

As an improvement of the embodiment, the base 1 is fixed on the detection platform through a fixing device 3, the fixing device 3 comprises a support rod 3-3 with threads in the middle, positioning nuts 3-1 located on two sides of the base 1 fix the base 1 on thread sections of the support rod 3-3, an industrial sucker 3-2 is arranged at the free end of one side of the support rod 3-3, and the industrial sucker 3-2 is used for being fixed on the detection platform.

When the device is used, two measuring devices of the detector are arranged at the edge of the surface of the glass to be measured in parallel as much as possible, two sets of laser sensors are calibrated simultaneously, the laser sensor arranged on the lower surface of the sliding block is positioned above the surface of the glass, the laser sensor on the linear guide rail is perpendicular to the narrow side surface of the plane of the glass, and laser penetrates through the plane glass to measure the flatness of the plane glass. The stepping motors on the two measuring devices work one at a time, so that the sliding block positioned on the transmission line moves towards one direction, and the stepping motors on the two measuring devices are linked by signals, so that the stepping motors on the two measuring devices always obtain the same movement signal.

Claims

1. The utility model provides an adopt laser detection plane glass roughness's detector which characterized in that: the detector comprises two measuring devices which are symmetrically arranged, each measuring device comprises a long rod type base (1), the bases (1) are fixed on a detection platform, a linear transmission device (2) is arranged on each base (1), a sliding block (4-1) in transmission connection with the linear transmission device (2) is arranged on each linear transmission device (2), two sets of laser sensors (4-4) are arranged on each sliding block (4-1), one set of laser sensors (4-4) is arranged on the lower surface of each sliding block (4-1), and the other set of laser sensors (4-4) is arranged on a linear guide rail (4-2) on the side surface of each sliding block (4-1); a laser emitting unit (4-4-1) which is a laser sensor (4-4) is arranged on one measuring device of the detector, and a laser receiving unit (4-4-2) which is a laser sensor (4-4) is arranged on the other measuring device of the detector; a positioning sliding block (4-3) matched with the linear guide rail (4-2) is arranged on the linear guide rail (4-2), and a laser sensor (4-4) on the linear guide rail (4-2) is arranged on the lower surface of the positioning sliding block (4-3); the lower surface of the positioning sliding block (4-3) is provided with a support (4-10), the support (4-10) is provided with a lead screw (4-7), two ends of the lead screw (4-7) are supported by bearing supports (4-8), the lead screw (4-7) is sleeved with a nut seat (4-6) in transmission connection, a laser sensor (4-4) on the positioning sliding block (4-3) is installed on the nut seat (4-6), and the support (4-10) is also provided with a clamping block (4-5) for limiting the axial movement of the nut seat (4-6); the linear transmission device (2) comprises stepping motors (2-2) positioned at two ends of the base (1) and winding rollers (2-1) in transmission connection with the corresponding stepping motors (2-2), the middle parts of the winding rollers (2-1) are of annular groove structures, and two ends of a transmission line (2-3) are in transmission connection with the two winding rollers (2-1) respectively; the free end of the transmission line (2-3) is welded on the winding roller (2-1), the sliding block (4-1) is in transmission connection with the transmission line (2-3), and the stepping motors on the two measuring devices are in signal linkage, so that the stepping motors on the two measuring devices always obtain the same motion signal.

2. The apparatus for inspecting flatness of flat glass using laser according to claim 1, wherein: the base (1) is fixed on the detection platform through the fixing device (3), the fixing device (3) comprises a support rod (3-3) with threads arranged in the middle, positioning nuts (3-1) positioned on two sides of the base (1) fix the base (1) on thread sections of the support rod (3-3), and an industrial sucker (3-2) is arranged at the free end of one side of the support rod (3-3).