CN212207155U - Plate glass defect detection device - Google Patents

Abstract

The utility model relates to a plate glass defect detection device, which comprises a glass conveying device, wherein the glass conveying device comprises a conveying rack, a power conveying roller way and a glass guide device; a face detection device for detecting defects on the glass surface; a limit detection device for being directed at glass limit defect detects, at first lead through glass with the flat glass of random gesture on the power roll gang and just, glass after leading just passes through limit defect detection and surface defect detection (two kinds of orders do not have the successive branch), can realize the complete detection to flat glass, and classify to glass's quality, compare with traditional check out test set, in the testing process, glass is at the position of detection area random distribution, inconvenient detection limit defect, still be unfavorable for the defect to glass to carry out analysis classification.

Description

Plate glass defect detection device

Technical Field

The utility model relates to a product defect detection field, concretely relates to plate glass defect detecting device.

Background

Various defects such as bubbles, cracks, scratches and the like are inevitably generated in the production process of the plate glass, particularly, defects such as edge breakage, corner breakage and the like are generated when some special plate glass is subjected to an edge grinding process, and the appearance quality or the use function is influenced, so that online quality detection is required before stacking and packaging. At present, the defects of the plate glass are mainly monitored on line by means of artificial naked eyes, eye fatigue is easy to generate, the detection quality is influenced by factors in charge of detection personnel, and the glass quality is difficult to control. Although various related detection devices are continuously appeared in the market, the existing detection devices have complex structures and high manufacturing cost, and the error reporting rate of detecting internal defects, hole edge defects and side edge defects of products is extremely high. More importantly, present check out test set detects the function singleness, can't carry out all-round detection to all defects of the product of treating examining, when facing multiple defect detection requirement, then can only purchase multiple check out test set, need occupy large tracts of land measurement space, have higher requirement to the detection place, need extravagant a large amount of manpowers moreover, detection efficiency is very low.

The prior art discloses a photovoltaic glass edge defect detection system and a corresponding method (CN201910236895), the system is installed on a production roller way of photovoltaic glass, wherein the system comprises a mechanical frame, a light source module, a camera module and an edge defect detection module, and the system is controlled by combining a corresponding method for realizing photovoltaic glass edge defect detection, wherein a machine vision detection technology is applied, so that the automatic detection of the photovoltaic glass edge can be realized, but the system has the following problems:

1. the system only detects and classifies the defects of the edge of the glass, but cannot detect the quality of the defects on the surface of the glass;

2. the position of the glass to be detected on the roller table is influenced by various factors, randomness is achieved in a certain area range, the position of the glass is difficult to limit or adjust by the positioning rollers on the left side and the right side, the difficulty of subsequent defect detection is increased, and the final detection effect is influenced;

3. the width of the glass is limited by the positioning rollers on the left side and the right side, and the glass can only adapt to the defect detection of the glass with single width.

Therefore, an intelligent device capable of accurately detecting various defects of the flat glass is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a flat glass defect detecting device can carry out accurate detection to flat glass's facial defect and limit portion defect, can also be applicable to multiple width flat glass's detection.

In order to achieve the above object, the utility model provides a plate glass defect detecting device, include:

the glass conveying device is used for conveying a workpiece to be detected and comprises a conveying rack, a power conveying roller way and a glass guiding device, wherein the glass guiding device is arranged on the lower side of a conveying roller at the feeding end of the power conveying roller way; the glass straightening device comprises a left pushing mechanism and a right pushing mechanism, the left pushing mechanism and the right pushing mechanism are symmetrically arranged in the width direction of the power conveying roller way, the left pushing mechanism and the right pushing mechanism are respectively provided with a straightening wheel, the straightening wheels penetrate through gaps of adjacent conveying rollers, the symmetrically arranged straightening wheels can simultaneously extend outwards or retract inwards, and when the straightening wheels retract inwards, the straightening wheels touch glass to straighten the glass;

the face detection device is erected above the middle part of the glass conveying device and comprises a face detection rack, an image acquisition module arranged at the top of the face detection rack, a first illumination module arranged at the front end of the face detection rack and used for providing a light source for the upper surface of the glass, a second illumination module arranged on the lower side of a conveying roller of a power conveying roller way and used for providing a light source for the lower surface of the glass, and a data processing module connected with the image acquisition module and used for calculating and processing acquired images and detecting the defects of the face of the guided plate glass;

the edge detection device comprises a first edge detection device and a second edge detection device, is symmetrically arranged in the width direction of the power conveying roller way, and is used for detecting the defects of the two edges of the guided plate glass;

and the control system is respectively and electrically connected with the glass conveying device, the image acquisition module, the data processing module and the edge detection device.

Preferably, the glass guiding device further comprises a support connected with the glass conveying device, the left pushing mechanism and the right pushing mechanism respectively comprise a driving cylinder, the power output end of the driving cylinder is connected with a push plate, and a guiding wheel is arranged on the push plate; the driving cylinder is connected with a pilot screw nut through a cylinder connecting plate, and the pilot screw nut is sleeved on a pilot screw; the guide screw is connected with the bracket through a screw support; the rodless cavities of the driving cylinders of the two pushing mechanisms simultaneously intake air or can drive the guide wheels on the push plate to simultaneously extend outwards under the action of spring force of the rodless cavities; the rod cavities of the driving cylinders of the two pushing mechanisms simultaneously admit air, and the guide wheels on the push plate can be driven to retract inwards at the same time.

Preferably, when the driving cylinder is a single-acting cylinder, the push plate extends outwards simultaneously under the action of the spring force in the rodless cavity of the driving cylinder.

Preferably, when the driving cylinder is a double-acting cylinder, a normally open pneumatic control valve and a normally open electric control valve are connected in parallel to an air inlet pipeline of a rodless cavity of the driving cylinder, and an air storage tank communicated with the normally open pneumatic control valve and the normally open electric control valve is further arranged.

Preferably, the driving cylinders are non-guide cylinders, the push plates are connected with the outer surface of the top plate of the support through linear guide rail pairs, and the two linear guide rail pairs are symmetrically arranged on two sides of the driving cylinders.

Preferably, each group of linear guide rail pairs comprises two linear bearings and one linear guide rail, wherein one linear bearing is connected with the push plate, and the other linear bearing is connected with the cylinder connecting plate; the linear guide rail is connected with the outer surface of the top plate of the support through a linear guide rail support.

Preferably, the push plate is provided with at least two guide wheels.

Preferably, the guide wheel is connected with the push plate through a vertical bracket.

Preferably, the guide wheel is a roller assembly capable of rotating around the axis of the guide wheel, and the outer side of the roller assembly is made of a non-metal material.

Preferably, the orientation of the guide screw rod is provided with a guide hand wheel at the power output end of the driving cylinder, and the guide hand wheel is used for manually rotating the guide screw rod to adjust the mounting position of the driving cylinder in the width direction on the glass conveying device, so that the distance between two symmetrically arranged pushing mechanisms is adjusted to adapt to glasses with different widths.

Preferably, the guide hand wheel is further provided with a fixing frame for fastening the connection between the guide hand wheel and the guide lead screw and preventing the guide hand wheel from freely rotating.

Preferably, the bracket is further provided with a sensor bracket for detecting whether the glass to be aligned passes through.

Preferably, the face detection frame stretches across on glass conveyor's the width direction, including left leg and right leg and the frame crossbeam that the symmetry set up, left leg, frame crossbeam and right leg connect gradually and are door type face detection frame, left leg and right leg are fixed with ground respectively.

Preferably, the frame cross beam comprises an upper cross beam and a lower cross beam, and the upper cross beam and the lower cross beam are connected through a plurality of vertical beams.

Preferably, the image acquisition module comprises a plurality of face photographing modules which are arranged on the upper cross beam at intervals and used for photographing the surface of the flat glass placed on the conveying roller and generating a picture corresponding to the surface of the flat glass for the analysis and the processing of the data processing module.

Preferably, the first illumination module is arranged above the conveying roller and faces or faces away from the glass guide device end, so that illumination is provided for the upper surface of the plate glass.

Preferably, the second illumination module is arranged on the left leg and the right leg, is lower than the conveying rollers in the height direction of the conveying frame, and is arranged in the gap between the adjacent conveying rollers in a penetrating manner, so as to provide illumination for the lower surface of the plate glass placed on the conveying rollers.

Preferably, first side detection device and second side detection device include C type respectively and shoot illumination collection moulding piece, with facial limit portion crossbeam that detects the frame connection, with the position control mechanism of the sub-unit connection of limit portion crossbeam, position control mechanism through linear guide vice with C type is shot the top of illumination collection moulding piece and is connected.

Preferably, the two symmetrical C-shaped openings of the C-shaped photographing illumination integration module are oppositely arranged and penetrate through the gap between the adjacent conveying rollers, and are respectively used for photographing the side edges of the flat glass placed on the conveying rollers and generating pictures corresponding to the side edges for the data processing module to analyze and process.

Preferably, the C-shaped shooting illumination integrated module comprises an upper light source arranged on the upper portion of the C-shaped inner cavity, a first shooting module arranged at an upper chamfer of the C-shaped inner cavity, a side light source arranged at a vertical portion of the C-shaped inner cavity, a second shooting module arranged at a lower chamfer of the C-shaped inner cavity, a lower light source arranged at the lower portion of the C-shaped inner cavity, and a casing.

Preferably, the upper light source is used for providing a light source at an upper chamfer of a side edge of the plate glass, the side light source is used for providing a light source at a side edge of the plate glass, and the lower light source is used for providing a light source at a lower chamfer of the plate glass.

Preferably, the position adjusting mechanism comprises an adjusting rack, an adjusting screw nut, an adjusting slider and an adjusting linear guide rail, the adjusting screw is arranged in the middle of the rack, the adjusting screw nut is sleeved on the adjusting screw, the adjusting slider and the adjusting linear guide rail are symmetrically arranged on two sides of the adjusting screw, the adjusting screw nut is connected with the slider through one side of a slider connecting plate, and an adjusting hand wheel is arranged at the end part of the adjusting screw; the other side of the sliding block connecting plate is connected with the top of the C-shaped photographing illumination integrated module through a connecting support.

The working process of the plate glass defect detection device is as follows:

the flat glass is carried by glass conveyor, at first leads the positive device through glass, will place the flat glass that position and gesture random distribution on the power rollgang and put right, then, the flat glass after leading is again through the symmetry set up the limit detection device that carries out glass's edge defect detection in the limit detection device of glass conveyor both sides, then again then carry out the detection of facial defect through facial detection device, perhaps, the flat glass after being led passes through facial detection device earlier, passes through limit detection device again.

The following description will be given taking as an example that the glass after being aligned passes through the edge detection device and then passes through the face detection device.

When the sensor detects that glass exists, a glass signal is sent to the control system, and the control system which receives the signal sends retraction signals to the driving cylinders of the left pushing mechanism and the right pushing mechanism respectively to control the driving cylinders to be switched into a retraction state (namely, the air is fed into the rod cavity); when the driving cylinder retracts until the guide wheel is in contact with the glass and does not retract fully, the driving cylinder can continue to retract, and the glass is pushed to move towards the inner side at the moment, so that the glass is automatically straightened by the guide wheel while moving forwards, and the purpose of guiding the glass is achieved. If the sensor does not detect the glass, the driving cylinder is switched from the retraction state to the full extension state.

The glass after the alignment continues to move forward, when the glass passes through the edge detection device, the upper light source, the lateral light source and the lower light source of the two symmetrical C-shaped shooting illumination integrated modules respectively provide light sources for the upper part, the lateral part and the lower part of the glass on the left side and the right side, the first shooting module above the lateral part and the second shooting module below the lateral part respectively shoot the lateral part, the upper part and the lower part of the lateral part of the glass, and the picture is transmitted to the data processing module to be subjected to image analysis, processing and defect classification.

Glass through limit portion detection continues to move ahead, and when face detection device, first illumination module and second illumination module provide the light source to glass upper surface, lower surface respectively, and a plurality of face modules of shooing shoot glass's upper surface to transmit the picture for data processing module and carry out image analysis, processing and defect classification. The comprehensive edge detection device and the face detection device respectively classify the edge and surface defect detection results, finally classify the glass defects and finally judge the glass quality.

Because the utility model adopts the above technical scheme, make the beneficial effect that this application possesses lie in:

1. the utility model relates to a plate glass defect detection device, which comprises a glass conveying device, wherein the glass conveying device comprises a conveying rack, a power conveying roller way and a glass guide device; a face detection device for detecting defects on the glass surface; a limit detection device for being directed at glass limit defect detects, at first with the flat glass of random gesture on the power roll gang lead through glass and just install and lead, glass after leading is through limit defect detection and surface defect detection (limit defect detection and surface defect detect the front and back order can be changed), can realize the complete detection to flat glass, and classify the quality of glass, compare with traditional check out test set, in the testing process, glass is at the position of detection area random distribution, inconvenient detection limit defect, still be unfavorable for carrying out analysis classification to glass's defect.

2. The utility model discloses a plate glass defect detecting device, limit portion detection device and face detection device set up to two stations, for the setting of integration at a station, have reduced image acquisition module, light source and data processing module's requirement, have reduced manufacturing cost.

3. The utility model discloses a plate glass defect detecting device, the first side detection device and the second side detection device that the symmetry set up include the C type respectively shoot illumination collection moulding piece, with facial limit portion crossbeam that detects the frame and connect, with the position control mechanism of the sub-unit connection of limit portion crossbeam, position control mechanism through linear guide vice with the C type is shot illumination collection moulding piece's top and is connected, and two C types of symmetry shoot the C type opening of illumination collection moulding piece and set up relatively, consequently, the interval between the C type shooting illumination collection moulding piece that the symmetry set up can be adjusted through position control mechanism, can adapt to different width glass's the portion and detect, strong adaptability.

4. The utility model relates to a plate glass defect detection device, which comprises a left pushing mechanism and a right pushing mechanism which are symmetrically arranged, wherein a driving cylinder is connected with a guide screw nut through a cylinder connecting plate, and the guide screw nut is sleeved on a guide screw; the guide screw is connected with the inner surface of the bottom plate of the support through the screw support, so that the position of the air cylinder is adjustable, when the width of different types of glass is changed greatly, the width of the different types of glass exceeds the telescopic stroke range of the air cylinder, the position of the air cylinder can be adjusted through the guide screw, the device can be ensured to be capable of adapting to the position adjustment of the type of glass, and the adaptability is high.

5. The utility model discloses a plate glass defect detecting device, the intake pipe that drives actuating cylinder's rodless chamber goes up the parallel connection has normally opened gas accuse valve and normally open automatically controlled valve, still be equipped with the gas holder that normally opens gas accuse valve and normally open automatically controlled valve communicate respectively can realize under the unexpected circumstances such as outage or gas break, and the cylinder can be automatic fully stretch, can effectively avoid damaging glass, influencing the normal operating of production line, has improved the security performance of system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;

FIG. 1 is a schematic perspective view of a flat glass defect detecting device according to the present invention;

FIG. 2 is a schematic perspective view of a glass correcting device of the glass conveying device according to the present invention;

fig. 3 is a schematic perspective view of the left or right pushing mechanism of the present invention;

FIG. 4 is a diagram of the air inlet path of the rodless cavity of the driving cylinder of the left pushing mechanism or the right pushing mechanism of the present invention;

fig. 5 is a schematic perspective view of the first side edge detection device or the second side edge detection device of the present invention;

fig. 6 is a schematic perspective view of the position adjustment mechanism of the present invention;

the reference numbers are as follows:

1. a glass conveying device; 11. a conveyor frame; 12. a power rollgang; 121. a conveying roller;

13. a glass correcting device; 131. a left pushing mechanism; 132. a right pushing mechanism; 133. a guide wheel; 134. a support; 135. a driving cylinder; 136. pushing the plate; 138. a cylinder connecting plate; 139. a lead screw nut; 140. a guide screw; 141. a linear bearing; 142. a linear guide rail; 143. a vertical support; 144. a normally open pneumatic control valve; 145. a normally open electrically controlled valve; 146. a gas storage tank; 147. a hand wheel; 148. a fixed mount; 149. a sensor holder;

2. a face detection device; 21. a face detection chassis; 211. a left leg; 212. a right leg; 213. a frame cross member; 22. an image acquisition module; 23. a first illumination module; 24. a second illumination module; 25. a data processing module;

3. an edge detection device; 31. a first side detection device; 32. a second side edge detection device; 33. a C-type shooting illumination integration module; 331. an upper light source; 332. a first photographing module; 333. a side light source; 334. a second photographing module; 335. a lower light source; 336. a housing; 34. an edge beam; 35. a position adjustment mechanism; 36. connecting a bracket;

4. a control system; 5. a flat glass.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators in the embodiments of the present invention, such as the first, second, upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The invention will be further described with reference to the following figures:

referring to fig. 1-6, the utility model provides a plate glass defect detecting device, include:

the glass conveying device 1 is used for conveying a workpiece to be detected and comprises a conveying rack 11, a power conveying roller way 12 and a glass guide device 13, wherein the glass guide device 13 is arranged on the lower side of a conveying roller 121 at the feeding end of the power conveying roller way 12; the glass straightening device 13 comprises a left pushing mechanism 131 and a right pushing mechanism 132, the left pushing mechanism 131 and the right pushing mechanism 132 are symmetrically arranged in the width direction of the power conveying roller way 12, the left pushing mechanism 131 and the right pushing mechanism 132 are respectively provided with a straightening wheel 133, the straightening wheels 133 are arranged in gaps of adjacent conveying rollers 121 in a penetrating manner, the symmetrically arranged straightening wheels 133 can simultaneously extend outwards or retract inwards, and when the straightening wheels 133 retract inwards, the glass is straightened by touching the glass;

the face detection device 2 is erected above the middle part of the glass conveying device 1 and comprises a face detection rack 21, an image acquisition module 22 arranged at the top of the face detection rack 21, a first illumination module 23 arranged at the front end of the face detection rack 21 and used for providing a light source for the upper surface of glass, a second illumination module 21 arranged at the lower side of a conveying roller 121 of the power conveying roller table 12 and used for providing a light source for the lower surface of glass, and a data processing module 25 connected with the image acquisition module 22 and used for carrying out calculation processing on acquired images, wherein the face detection device 2 is used for detecting defects of the guided flat glass face;

the edge detection device 3 comprises a first edge detection device 31 and a second edge detection device 32, which are symmetrically arranged in the width direction of the power conveying roller way 12 and used for detecting the defects on the two sides of the guided plate glass:

the control system 4 is respectively and electrically connected with the glass conveying device 1, the image acquisition module 22, the data processing module 25 and the edge detection device 3; the sheet glass 5 is conveyed by the glass conveying device 1,

in this embodiment, along the conveying direction of the power conveying roller 12, the glass correcting device 13, the edge detecting device 3 and the face detecting device 2 are sequentially arranged from right to left, the plate glass 5 to be detected firstly passes through the glass correcting device 13, the plate glass 5 placed on the power conveying roller 12 and randomly distributed in position and posture is corrected, then, the flat glass 5 after being guided is processed by edge detection devices 3 symmetrically arranged at two sides of the glass conveying device 1 to detect the edge defects of the glass, and then processed by a face detection device 2 to detect the face defects, thereby realizing the complete detection of the flat glass 5 and classifying the quality of the glass, in the detection process, the positions of the glass in the detection area are randomly distributed, so that the edge defects are inconvenient to detect and the defects of the glass are also not beneficial to analyzing and classifying; in addition, the edge detection device 3 and the face detection device 2 are arranged at two different stations, so that the requirements of the image acquisition module 22 and the light source and data processing module 25 are reduced, and the manufacturing cost is reduced. The left and right positions of the edge detection device 3 and the face detection device 2 can be adjusted, that is, the flat glass passing through the glass guiding device 13 can be detected for the face defect first and then for the edge defect, and the layout method is not limited to that provided in the embodiment.

As a preferred embodiment, referring to fig. 2 and 3, the glass guiding device 13 further includes a bracket 134 connected to the glass conveying device 1, a left pushing mechanism 131 and a right pushing mechanism 132, each of which includes a driving cylinder 135, a power output end of the driving cylinder 135 is connected to a push plate 136, and a guiding wheel 133 is disposed on the push plate 136; the driving cylinder 135 is connected with a pilot screw nut 139 through a cylinder connecting plate 138, and the pilot screw nut 139 is sleeved on a pilot screw 140; the pilot screw 140 is connected with the bracket 134 through a screw support; the rodless cavities of the driving cylinders 135 of the two pushing mechanisms simultaneously intake air or can drive the guide wheels 133 on the push plates 136 to simultaneously extend outwards under the action of spring force of the rodless cavities; the rod cavities of the driving cylinders 135 of the two pushing mechanisms simultaneously intake air, and can drive the guide wheels 133 on the push plates 136 to simultaneously retract inwards; the symmetrically arranged driving cylinders 135 can simultaneously move in opposite directions or in opposite directions at a constant speed, so that the lateral movement distance of the plate glass 5 is short, and the geometric center of the plate glass 5 to be detected can be ensured to be constant all the time, thereby facilitating defect detection and detection data processing; in addition, the driving cylinder 135 is connected with a pilot screw nut 139 through a cylinder connecting plate 138, and the pilot screw nut 139 is sleeved on a pilot screw 140; lead and just lead screw 140 and be connected with support 134 through the lead screw support for drive actuating cylinder 135's position is adjustable, when different grade type glass width change was great, has surpassed the flexible stroke scope of cylinder, and the accessible is led just lead screw 140 and is adjusted the position that drives actuating cylinder 135 this moment, ensures that the device can adapt to this type glass's position adjustment, strong adaptability.

As the preferred embodiment, when driving actuating cylinder 135 for the single-action cylinder, push pedal 136 is outwards stretched out simultaneously under the spring force effect of driving actuating cylinder 135 rodless intracavity portion, can realize under the unexpected circumstances such as outage or gas-break, the cylinder can be automatic fully stretched, can effectively avoid damaging glass, influence the normal operating of production line, has improved the security performance of system.

As a preferred embodiment, referring to fig. 4, when the driving cylinder 135 is a double-acting cylinder, the air intake pipeline of the rodless cavity of the driving cylinder 135 is connected in parallel with a normally open air control valve 144 and a normally open electric control valve 145, and is further provided with an air storage tank 146 respectively communicated with the normally open air control valve 144 and the normally open electric control valve 145, so that the cylinder can be automatically fully extended under unexpected conditions such as power failure or air cut-off, glass damage and influence on the normal operation of the production line can be effectively avoided, and the safety performance of the system is improved.

As a preferred embodiment, the driving cylinders 135 are non-guiding cylinders, the push plates 136 are connected with the outer surface of the top plate of the bracket 134 through linear guide rail pairs, and the two linear guide rail pairs are symmetrically arranged at two sides of the driving cylinders 135; the pilot screw 140 is coupled to an inner surface of the bottom plate of the carriage 134 via a screw mount.

As a preferred embodiment, each set of linear guide rail pair comprises two linear bearings 141 and one linear guide rail 142, wherein one linear bearing 141 is connected with the push plate 136, and the other linear bearing is connected with the cylinder connecting plate 138; the linear guide 142 is coupled to the outer surface of the top plate of the bracket 134 via a linear guide mount.

In a preferred embodiment, the aligning wheel 133 is connected to the push plate 136 by a vertical bracket 143, so that the aligning wheel 133 can pass through the gap of the conveying roller 121.

As a preferred embodiment, at least two guiding wheels 133 are provided on the pushing plate 136, in this embodiment, two guiding wheels 133 are provided on the pushing plate 136, correspondingly, two vertical supports 133 connected to the guiding wheels 133 are also provided, the guiding wheels 133 are provided at the top end of the vertical support 143, and the guiding wheels 133 are arranged in bilateral symmetry, so that the guiding wheels 133 can be infinitely close to the inner side of the power roller way 12 of the glass conveying apparatus 1, the overall structure arrangement is compact, and the width utilization rate of the power roller way 12 is high.

In a preferred embodiment, the alignment wheel 133 is a roller assembly that can rotate around its axis, and the outer side of the roller assembly is made of a non-metal material, and in this embodiment, the outer side of the roller assembly is made of polyurethane, so as to prevent the glass from being damaged.

As a preferred embodiment, the power output end of the guiding screw 140 facing the driving cylinder 135 is provided with a guiding hand wheel 147 for manually rotating the guiding screw 140 to adjust the installation position of the driving cylinder 135 on the glass conveying device 1 in the width direction, so as to adjust the distance between the two symmetrically arranged left pushing mechanisms 131 and right pushing mechanisms 132 to adapt to glasses with different widths.

In a preferred embodiment, the guiding hand wheel 147 is further provided with a fixing frame 148 for fastening the guiding hand wheel 147 to the guiding screw 140 to prevent the guiding hand wheel 147 from freely rotating.

In a preferred embodiment, a sensor support 149 is provided on the support 134 for detecting whether the glass to be aligned passes through.

As the preferred embodiment, facial detection frame 21 spanes in glass conveyor 1's width direction, including left leg 211 and right leg 212 and the frame crossbeam 213 that the symmetry set up, left leg 211, frame crossbeam 213 and right leg 212 connect gradually and are door type facial detection frame 21, left leg 211 and right leg 212 are fixed with ground respectively, guarantee facial detection device 2's steadiness, facial detection device 2 and glass conveyor 1's separation sets up simultaneously, reduce the vibrations of glass conveyor 1 and transmit image acquisition module 22, guarantee to shoot the sharp picture of image, with the reduction of subsequent image analysis processing degree of difficulty.

In a preferred embodiment, the frame beam 213 includes an upper beam and a lower beam, and the upper beam and the lower beam are connected by a plurality of vertical beams, so that the frame structure is convenient and simple to manufacture, and is more convenient for connecting related equipment.

As a preferred embodiment, the image capturing module 22 includes several face photographing modules, which are arranged at intervals on the upper beam, and are used for photographing the surface of the flat glass 5 placed on the conveying roller 121 and generating a picture corresponding to the surface for the data processing module 25 to analyze and process.

In a preferred embodiment, the first illumination module 23 is disposed above the conveying roller 121, facing or away from the end of the glass straightening device 13, so as to provide illumination to the upper surface of the flat glass.

As a preferred embodiment, the second illumination module 24 is provided on the left leg 211 and the right leg 212, which are lower than the conveying rollers 121 in the height direction of the conveyor frame 11, and are inserted into the gap between the adjacent conveying rollers 121 so as to provide illumination to the lower surface of the sheet glass 5 placed on the conveying rollers 121.

As a preferred embodiment, referring to fig. 5, the first side detection device 31 and the second side detection device 32 respectively include a C-shaped photographing illumination integration module 33, a side beam 34 connected to the face detection frame 21, and a position adjustment mechanism 35 connected to a lower portion of the side beam 34, and the position adjustment mechanism 35 is connected to a top portion of the C-shaped photographing illumination integration module 33 through a linear guide pair.

As a preferred embodiment, the two symmetrical C-shaped openings of the C-shaped photographing illumination integration modules 33 are oppositely arranged and penetrate through the gap between the adjacent conveying rollers 121, and are respectively used for photographing the side edges of the flat glass 5 placed on the conveying rollers 121 and generating pictures corresponding to the side edges for the analysis and processing of the data processing module 25. Therefore, the distance between the C-shaped shooting illumination integrated modules 33 which are symmetrically arranged can be adjusted through the position adjusting mechanism 35, the edge detection of glass with different widths can be adapted, and the adaptability is strong.

As a preferred embodiment, the C-shaped photographing illumination integrated module 33 includes an upper light source 331 disposed at the upper portion of the C-shaped cavity, a first photographing module 332 disposed at the upper chamfer of the C-shaped cavity, a side light source 333 disposed at the vertical portion of the C-shaped cavity, a second photographing module 334 disposed at the lower chamfer of the C-shaped cavity, a lower light source 335 disposed at the lower portion of the C-shaped cavity, and a housing 336, wherein the edge detection device 3 has photographing modules disposed at the upper portion and the lower portion of the two side edges of the flat glass 5, so as to photograph images of the side edges of the flat glass 5 in an omni-directional and dead-angle-free manner, thereby avoiding missing detection or false detection of defects.

In a preferred embodiment, the upper light source 331 is used for providing a light source to an upper chamfer of the side edge of the plate glass 5, the side light source 333 is used for providing a light source to the side edge of the plate glass 7, and the lower light source 335 is used for providing a light source to a lower chamfer of the plate glass 5, so that the all-around dead-angle-free illumination of the side edge of the plate glass 5 can be realized, the first photographing module 332 and the second photographing module 334 can be used for photographing clearer glass pictures, and the missing detection or the false detection of defects can be avoided.

As a preferred embodiment, referring to fig. 6, the position adjusting mechanism 35 includes an adjusting rack, an adjusting screw nut, an adjusting slider, and an adjusting linear guide, the adjusting screw is disposed in the middle of the rack, the adjusting screw nut is sleeved on the adjusting screw, the adjusting slider and the adjusting linear guide are symmetrically disposed on two sides of the adjusting screw, the adjusting screw nut is connected to the slider through one side of a slider connecting plate, and an adjusting hand wheel is disposed at an end of the adjusting screw; the other side of the sliding block connecting plate is connected with the top of the C-shaped photographing illumination integrated module 33 through a connecting bracket 36; the position adjusting mechanism 35 can be manually adjusted according to the width of the glass, can adapt to the glass with different widths, and has strong adaptability.

The working process of the plate glass defect detection device is as follows:

the flat glass 5 is conveyed by the glass conveying device 1, firstly the flat glass 5 which is placed on the power conveying roller 12 and randomly distributed in position and posture is straightened by the glass straightening device 13, then the straightened flat glass 5 passes through the edge detection devices 3 which are symmetrically arranged at two sides of the glass conveying device 1 to detect the edge defects of the glass, and then the face detection device 2 is used for detecting the face defects; alternatively, the guided sheet glass passes through the face detection device 2 and then the edge detection device 3.

Next, the following description will be given taking an example in which the glass after being aligned passes through the edge detection device 3 and then passes through the face detection device 2.

When the sensor detects that glass exists, a glass signal is sent to the control system 4, and the control system 4 which receives the signal sends retraction signals to the driving cylinders 135 of the left pushing mechanism 131 and the right pushing mechanism 132 respectively to control the driving cylinders 135 to be switched to a retraction state (namely, rod cavity air intake) simultaneously; when the driving cylinder 135 retracts until the guide wheel 133 is in contact with the glass and does not retract to the full extent, the driving cylinder continues retracting, and the glass is pushed to move towards the inner side at the moment, so that the glass is automatically straightened by the guide wheel 133 while moving forwards, and the purpose of guiding the glass is achieved. If the sensor does not detect glass, the actuating cylinder 135 is again switched from the retracted state to the fully extended state.

The glass after being guided continues to move forward, when the glass passes through the edge detection device 3, the upper light source 331, the lateral light source 333 and the lower light source 335 of the two symmetrical C-shaped photographing illumination integration modules 33 respectively provide light sources for the upper part, the lateral part and the lower part of the glass on the left side and the right side, respectively, the first photographing module 332 and the second photographing module 334 on the lateral part respectively photograph the upper part and the lower part of the lateral part of the glass, and transmit the picture to the data processing module 25 for image analysis, processing and defect classification.

Glass that detects through limit portion detection device 3 continues to move ahead, and when face detection device 1, first illumination module 23 and second illumination module 24 provide the light source to glass upper surface, lower surface respectively, and a plurality of facial modules of shooing take a picture to data processing module 25 is given to the picture and carries out image analysis, processing and defect classification. The comprehensive edge detection device 3 and the surface detection device 2 respectively classify the edge and surface defect detection results, finally classify the glass defects and finally judge the glass quality.

The above is a detailed introduction of the present invention, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the explanations of the above embodiments are only used to help understand the methods and core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A sheet glass defect detecting apparatus, comprising:

the glass conveying device is used for conveying a workpiece to be detected and comprises a conveying rack, a power conveying roller way and a glass guiding device, wherein the glass guiding device is arranged on the lower side of a conveying roller at the feeding end of the power conveying roller way; the glass straightening device comprises a left pushing mechanism and a right pushing mechanism, the left pushing mechanism and the right pushing mechanism are symmetrically arranged in the width direction of the power conveying roller way, the left pushing mechanism and the right pushing mechanism are respectively provided with a straightening wheel, the straightening wheels penetrate through gaps of adjacent conveying rollers, the symmetrically arranged straightening wheels can simultaneously extend outwards or retract inwards, and when the straightening wheels retract inwards, the straightening wheels touch glass to straighten the glass;

the face detection device is erected above the middle part of the glass conveying device and comprises a face detection rack, an image acquisition module arranged at the top of the face detection rack, a first illumination module arranged at the front end of the face detection rack and used for providing a light source for the upper surface of the glass, a second illumination module arranged on the lower side of a conveying roller of a power conveying roller way and used for providing a light source for the lower surface of the glass, and a data processing module connected with the image acquisition module and used for calculating and processing acquired images and detecting the defects of the face of the guided plate glass;

the edge detection device comprises a first edge detection device and a second edge detection device, is symmetrically arranged in the width direction of the power conveying roller way, and is used for detecting the defects of the two edges of the guided plate glass;

and the control system is respectively and electrically connected with the glass conveying device, the image acquisition module, the data processing module and the edge detection device.

2. The plate glass defect detecting device of claim 1, wherein the glass guiding device further comprises a support connected with the glass conveying device, the left pushing mechanism and the right pushing mechanism respectively comprise a driving cylinder, a power output end of the driving cylinder is connected with a push plate, and a guiding wheel is arranged on the push plate; the driving cylinder is connected with a pilot screw nut through a cylinder connecting plate, and the pilot screw nut is sleeved on a pilot screw; the guide screw is connected with the bracket through a screw support; the rodless cavities of the driving cylinders of the two pushing mechanisms simultaneously intake air or can drive the guide wheels on the push plate to simultaneously extend outwards under the spring force action of the rodless cavities; the rod cavities of the driving cylinders of the two pushing mechanisms simultaneously admit air, and the guide wheels on the push plate can be driven to retract inwards at the same time.

3. The apparatus for detecting defects of sheet glass according to claim 2, wherein the driving cylinder is a single-acting cylinder, and the push plate is simultaneously extended outward by a spring force in a rodless chamber of the single-acting cylinder.

4. The plate glass defect detection device according to claim 2, wherein when the driving cylinder is a double-acting cylinder, a normally open pneumatic control valve and a normally open electric control valve are connected in parallel to an air inlet pipeline of a rodless cavity of the driving cylinder, and an air storage tank respectively communicated with the normally open pneumatic control valve and the normally open electric control valve is further arranged.

5. The apparatus for detecting defects of sheet glass according to any one of claims 2 to 4, wherein the driving cylinders are non-guiding cylinders, the push plate is connected to the outer surface of the top plate of the support through linear guide pairs, and the two linear guide pairs are symmetrically arranged at both sides of the driving cylinders.

6. The sheet glass defect detecting device according to any one of claims 1 to 4, wherein the face detection frame spans in the width direction of the glass conveying device, and comprises a left leg, a right leg and a frame beam which are symmetrically arranged, the left leg, the frame beam and the right leg are sequentially connected to form a door-shaped face detection frame, and the left leg and the right leg are respectively fixed with the ground.

7. The apparatus for detecting defects in sheet glass as claimed in claim 6, wherein said first illumination module is disposed above said delivery rolls and toward or away from the glass guiding device end; the second illumination module is arranged on the left supporting leg and the right supporting leg, is lower than the conveying rollers in the height direction of the conveying rack and penetrates through gaps between the adjacent conveying rollers.

8. The flat glass defect detecting device according to any one of claims 1, 2, 3, 4 and 7, wherein the first side edge detecting device and the second side edge detecting device respectively comprise a C-shaped photographing illumination integrated module, an edge cross beam connected with the face detecting rack, and a position adjusting mechanism connected with the lower part of the edge cross beam, and the position adjusting mechanism is connected with the top of the C-shaped photographing illumination integrated module through a linear guide rail pair.

9. The apparatus according to claim 8, wherein the two symmetrical C-shaped openings of the C-shaped photographing illumination integration modules are arranged oppositely and penetrate through the gap between adjacent conveying rollers, and are respectively used for photographing the side edges of the plate glass placed on the conveying rollers.

10. The apparatus as claimed in claim 9, wherein the C-shaped photographing illumination integration module comprises an upper light source disposed at an upper portion of the C-shaped inner cavity, a first photographing module disposed at an upper chamfer of the C-shaped inner cavity, a side light source disposed at a vertical portion of the C-shaped inner cavity, a second photographing module disposed at a lower chamfer of the C-shaped inner cavity, a lower light source disposed at a lower portion of the C-shaped inner cavity, and a housing.

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