CN106200038A - The edge detecting system of a kind of glass substrate and detection method thereof - Google Patents

Abstract

The present invention is the edge detecting system about a kind of glass substrate and detection method thereof, wherein, glass substrate has first, second, third and fourth side, first side is parallel with second side, detecting system includes driving means, the first detector, the second detector, the 3rd detector and the 4th detector, described driving means is a driver or two drivers, the first detector and the second detector are fixed, and the 3rd detector and the 4th detector move under the drive of driving means；Detection method is, the first detector and the second detector detect first side and the second side of glass substrate to be measured, the 3rd detection device and the 4th detection device respectively and detect the 3rd side and four side of glass substrate to be measured respectively.This method is possible not only to improve the edge detection efficiency of glass substrate, improves the production efficiency of whole production line, and decreases the error during detection, adds the service life of detector.

Description

A glass substrate edge detection system and detection method thereof

technical field

The invention relates to an edge detection of a glass substrate, in particular to an edge detection system and a detection method of a glass substrate.

Background technique

In recent years, with the development of modern science and technology and the advancement of information technology, display technology is gradually developing in the direction of light weight and large format. Liquid Crystal Display (LCD for short) has the advantages of low operating voltage, no radiation, no flicker, space saving, etc., and has been widely used in high-end electronic display fields such as optoelectronics, biomedicine, and national defense, such as LCD TVs, instruments Instrumentation, communication, monitoring, etc.

The liquid crystal display glass substrate is thin in thickness and large in area, and is an important part of the liquid crystal display panel. In order to improve work efficiency in production, usually a larger liquid crystal glass is cut to obtain multiple glass substrates of required area. Therefore, the quality of cutting liquid crystal glass substrates directly affects the quality of subsequent products.

Compared with ordinary glass, liquid crystal glass substrates are brittle and thin. Therefore, when cutting glass substrates, phenomena such as chipping, undergrinding, overgrinding, edge burning, ungrinded feet, edge cracking, and corner drop often occur. . Therefore, in order to produce a qualified liquid crystal glass substrate, it is necessary to detect the edge of the glass substrate. In the existing detection of the edge of the liquid crystal glass substrate, since the glass runs in one direction, when detecting the 4 sides of the glass, it needs 4 times of detection to complete. Both sides of the conveyor belt in the forward direction), the glass needs to be stationary, and the detection equipment moves to complete the detection, which has a great impact on the beat of the entire production line and seriously affects the operating efficiency of the production line.

Contents of the invention

The main purpose of the present invention is to provide a glass substrate edge detection system and detection method thereof. The technical problem to be solved is to improve the efficiency of glass substrate edge detection, so that it is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions.

According to an edge detection system of a glass substrate proposed in the present invention, the glass substrate has a first side, a second side, a third side and a fourth side, and the first side and the second side The sides are parallel, the detection system includes a driving device, a first detector, a second detector, a third detector and a fourth detector, the driving device includes a driver or two drivers, and the first detection The detector and the second detector are fixedly set; the third detector and the fourth detector are jointly driven by a driver; or, the third detector is driven by a driver, and the fourth detector is driven by another driver drive.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

Preferably, the aforementioned edge detection system for glass substrates, wherein the driving device is a servo motor.

Preferably, the aforementioned edge detection system for a glass substrate, wherein the vertical distance between the first detector and the third detector is the same as the length of the first side or the second side of the glass substrate.

Preferably, the aforementioned edge detection system for glass substrates, wherein the first detector, the second detector, the third detector and the fourth detector are online detectors or offline detectors.

The purpose of the present invention and the solution to its technical problems are also achieved by the following technical solutions.

According to an edge detection method of a glass substrate provided by the present invention, the glass substrate has a first side, a second side, a third side and a fourth side, and the first side and the second side The sides are parallel; the first side, the second side, the third side and the fourth side are respectively detected by the first detector, the second detector, the third detector and the fourth detector; The first detector and the second detector are fixedly arranged, and the glass substrate is conveyed to move along a preset direction, the first side passes through the detection area of the first detector, and the second side passes through the second The detection area of the second detector obtains the detection data of the first side and the second side plate; drives the third detector to make the detection area of the third detector move along the third side, Obtaining the detection data of the third side; driving the fourth detector so that the detection area of the fourth detector moves along the fourth side to obtain the detection data of the fourth side.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

Preferably, in the aforementioned edge detection method of a glass substrate, the first detector, the second detector, the third detector and the fourth detector are online detectors or offline detectors.

Preferably, in the aforementioned edge detection method of a glass substrate, the third detector and the fourth detector are jointly driven by a driver; or, the third detector is driven by a driver, and the second detector is driven by a driver. The four detectors are driven by another driver.

Preferably, in the aforementioned method for detecting the edge of a glass substrate, the method for detecting a glass substrate to be tested is as follows: the first detector and the second detector are fixedly arranged, and the edge of the glass substrate to be tested is Move in a preset direction to complete the detection of the first side and the second side of the glass substrate to be tested; the third detector and the fourth detector are respectively driven by two drivers and move along the direction of the glass substrate to be tested. The third side and the fourth side move to complete the detection of the third side and the fourth side of the glass substrate to be tested.

Preferably, the aforementioned method for detecting the edge of a glass substrate, the method for detecting more than two glass substrates is as follows: the first detector and the second detector are fixedly arranged, and the glass substrate to be tested is arranged along a predetermined direction. movement to complete the detection of the first side and the second side of the glass substrate to be tested; the third detector and the fourth detector are driven by the driver to move along the third side of the second glass substrate to be tested. The edge and the fourth side of the first glass substrate to be tested move to complete the detection, the third detector and the fourth detector are located between the first glass substrate to be tested and the second glass substrate to be tested, and the The above-mentioned third detector and the fourth detector make the first synchronous movement, the speed of the first synchronous movement is the first speed, and the two glass substrates that are detected at the same time are located in front of the preset direction of glass substrate movement The first glass substrate to be tested is the first glass substrate to be tested, and the second glass substrate to be tested is located behind.

Preferably, the aforementioned method for detecting the edge of a glass substrate, wherein the method for detecting more than two glass substrates is as follows: the first detector and the second detector are fixed, and the glass substrate to be tested Moving along a preset direction to complete the detection of the first side and the second side of the glass substrate to be tested, the moving speed of the glass substrate to be tested is the second speed; the third detector and the fourth detector are in the drive Driven to move along the third side of the second glass substrate to be tested and the fourth side of the first glass substrate to be tested respectively to complete the detection, the third detector and the fourth detector are located on the first between the glass substrate to be tested and the second glass substrate to be tested, and the third detector and the fourth detector perform a second synchronous movement, the speed of the second synchronous movement is the third speed, and the The third speed is the sum of the first speed and the second speed. Among the two glass substrates to be tested at the same time, the one in front of the preset direction of glass substrate movement is the first glass substrate to be tested, and the one behind is the second one to be tested. Glass base board.

By means of the above technical solution, the edge detection system and detection method of the glass substrate in the present invention have at least the following advantages:

1. Improve the edge detection efficiency of the glass substrate and save energy.

In the existing glass substrate edge detection method, the glass to be tested needs to be stationary, and the detector moves to complete the detection of the four edges of the glass substrate in sequence, which takes a long time and seriously hinders the production efficiency. The present invention designs four detectors, the first detector and the second detector are fixed, and are used to detect the first side and the second side of the glass substrate, and the third detector and the fourth detector detect the third side through motion. side and fourth side.

In a preferred embodiment, the glass substrate moves with the conveyor belt, and the third detector and the fourth detector can also move with the movement of the glass substrate while detecting the third side and the fourth side, so the entire detection During the process, only need to adjust the movement rate of the glass substrate and the distance between two adjacent glass substrates, the edge of the glass substrate can be continuously detected, the conveyor belt does not need to stop, and the detection efficiency can be increased by about 50%-75%. At the same time, it saves energy resources (because the energy required for the uniform motion of the conveyor belt is less than the energy required for the intermittent motion of the conveyor belt, and when the conveyor belt is suspended, the entire production device needs to be suspended), so it is more suitable for actual production.

2. The detection equipment is relatively fixed, which reduces the error caused by rotating the detector during the detection process and increases the service life of the detector.

The distance between the detector and the glass substrate to be tested is one of the key factors to obtain accurate data, so the distance between the detector and the glass to be tested must be strictly controlled. The existing glass substrate edge detection equipment needs to rotate the detection equipment to complete the detection of the four edges of the glass substrate. Such a rotation process increases the difficulty of controlling the distance between the detector and the glass to be tested, and easily causes errors. In turn, the test results are inaccurate and affect the quality of the product. In the present invention, the detector does not need to be rotated, and the distance between the detector and the glass substrate can be strictly controlled, thereby improving the accuracy of detection results; moreover, in the present invention, the detector does not need to be rotated, which improves the service life of the detector.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Description of drawings

FIG. 1 is a schematic diagram of a detection method when a glass substrate edge detection system detects a glass substrate.

1 first detector, 2 second detector, 3 third detector, 4 fourth detector; 11 first side of glass substrate, 12 second side of glass substrate, 13 third side of glass substrate , 14 the fourth side of the glass substrate.

Fig. 2 is a schematic diagram of a detection method when the glass substrate edge detection system detects two glass substrates at the same time intermittently.

1 The first detector, 2 The second detector, 3 The third detector, 4 The fourth detector, 5 The first glass substrate to be tested, 6 The second glass substrate to be tested, 7 The third glass substrate to be tested , V ₀ the moving speed of the glass substrate to be measured, V ₁ the moving speeds of the third detector and the fourth detector.

Fig. 3 is a schematic diagram of a detection method when the glass substrate edge detection system is continuous and detects two glass substrates at the same time.

1 The first detector, 2 The second detector, 3 The third detector, 4 The fourth detector, 5 The first glass substrate to be tested, 6 The second glass substrate to be tested, 7 The third glass substrate to be tested , V ₀ is the moving speed of the glass substrate to be measured, V ₂ is the moving speed of the third detector and the fourth detector, V ₂ can be decomposed into V ₀ and V ₁ , and V ₁ is the same as V ₁ in Fig. 2 .

detailed description

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation and structure of a glass substrate edge detection method proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. , features and their effects are described in detail below. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures or characteristics of one or more embodiments may be combined in any suitable manner.

Existing detection methods for glass substrates mainly fall into two categories, namely on-line detection and off-line detection. Commonly used off-line detection methods mainly include potential method, magnetic particle method, ultrasonic method, ray method and electromagnetic detection method. The present invention is applicable to all on-line detectors and off-line detectors. Specifically, the on-line detector includes: CCD matrix camera and LCD light source, and the off-line detector includes: CCD matrix camera and LCD light source.

The present invention is applicable to glass substrates with four sides and at least two parallel opposite sides, such as a rectangle. Wherein, the rectangle is a rectangle or a square.

Example 1

In this embodiment, the glass substrate to be tested is one piece.

In this embodiment, the glass substrate to be tested is a neutral borosilicate glass substrate, and the shape of the glass substrate to be tested is a square with a side length of 1300 mm×1300 mm. The first side 11 , the second side 12 , the third side 13 , and the fourth side 14 of the glass substrate to be tested are shown in FIG. 1 , and four glass substrate edge detectors are provided in this embodiment.

The first detector 1 and the second detector 2 are symmetrically fixed on both sides of the glass substrate, respectively located at the end points of the same side of the first side 11 and the second side 12 of the glass substrate to be tested, and the glass substrate to be tested With the movement of the conveyor belt, under the condition that the glass substrate is moving and the first detector 1 and the second detector 2 are stationary, when the neutral borosilicate glass substrate to be tested passes the first detector 1 and the second detector 2, the process is completed. Detection of the first side 11 and the second side 12 . At this time, the speed at which the glass substrate moves with the conveyor belt is V _{0 , and the speed of V 0 is} 166 mm/s.

The third detector 3 and the fourth detector 4 are used to detect the third side 13 and the fourth side 14 of the glass substrate to be tested. The driving device is composed of two drivers, which respectively drive the third detector 3 and the fourth detector 4 to move. At this time, the conveyor belt is suspended, and the glass substrate to be tested is suspended accordingly. Under the condition that the detector is moving and the glass to be tested is still , the detection of the third side 13 is completed by the third detector 3 , and the detection of the fourth side 14 is completed by the fourth detector 4 . Driven by the driver, the movement speed of the third detector 3 and the fourth detector 4 is V ₁ , and the speed of V ₁ is 200mm/s.

The first detector 1, the second detector 2, the third detector 3 and the fourth detector 4 are all composed of a CCD matrix camera and an LCD light source.

The detection indicators of the four detectors in this embodiment include chipping, undergrinding, overgrinding, burnt edges, ungrinded feet, edge cracks, corner drop, and the like. If the above phenomenon is not detected, it is a qualified product.

In this embodiment, the time to complete the detection of the edge of a glass substrate is 14.33s.

Example 2

In this embodiment, there are three glass substrates to be tested. The glass substrate edge detection system of this embodiment can intermittently detect two glass substrates at the same time.

The liquid crystal glass substrate described in this embodiment is soda glass, rectangular in shape, the length of the first side and the second side is 1850mm, and the length of the third side and the fourth side is 1500mm. The edge detection system of the glass substrate detects two glass substrates at the same time, as shown in Figure 2.

The glass substrate 5, the glass substrate 6 and the glass substrate 7 move along the preset direction with the conveyor belt, the first detector 1 and the second detector 2 are fixedly arranged, and the third detector 3 and the fourth detector 4 are located in two adjacent blocks to be Measure between the glass and move under the drive of the driver.

When the first side and the second side of the glass substrate 5 move to the first detector 1 and the second detector 2, the glass substrate 5 continues to move with the transmission belt to complete the inspection of the first side and the second side of the glass substrate 5. Side detection;

When the glass substrate 5 moves to the third detector 3, the conveyor belt temporarily transmits, the glass substrate stops moving, and the third detector 3 moves along the third side of the glass substrate 5 under the drive of the driver to complete the inspection of the glass substrate 5. Detection of the third side of ;

The conveyor belt resumes transmission, and the glass substrate resumes movement. At this time, the first detector 1 and the second detector 2 detect the first side and the second side of the glass substrate 6. When the glass substrate 6 moves to the third detector At 3, the detection of the first side and the second side of the glass substrate 6 by the first detector 1 and the second detector 2 is completed, the conveyor belt temporarily transmits, the glass substrate stops moving, the third detector 3 and the fourth The detector 4 moves synchronously under the drive of the driver, and the third detector 3 and the fourth detector 4 complete the detection of the third side of the glass substrate 6 and the fourth side of the glass substrate 5 respectively;

The conveyor belt resumes transmission, and the glass substrate resumes movement. At this time, the first detector 1 and the second detector 2 detect the first side and the second side of the glass substrate 7. When the glass substrate 7 moves to the third detector At 3, the glass substrate stops moving, the third detector 3 and the fourth detector 4 move synchronously under the drive of the driver, and the third detector 3 and the fourth detector 4 complete the inspection of the third side of the glass substrate 7 respectively. Detection of the edge and the fourth side of the glass substrate 6;

The conveyor belt resumes transmission, and the glass substrate resumes movement. When the glass substrate 7 moves to the fourth detector 4, the glass substrate stops moving, and the fourth detector 4 moves along the fourth side of the glass substrate 7 under the drive of the driver. Inspection of the fourth side of the glass substrate 7 .

The speed at which the glass substrate moves with the conveyor belt is V _{0 , and the speed of V 0 is} 166mm/s. Driven by the driver, the moving speed of the third detector 3 and the fourth detector 4 is V ₁ , and the speed of V ₁ is 200mm /s. The distance between the glass substrate 5 and the glass substrate 6 is 40 cm, and the distance between the glass substrate 6 and the glass substrate 7 is also 40 cm.

In this embodiment, the time to complete the detection of the edge of a glass substrate is 18.9s.

Example 3

In this embodiment, there are three glass substrates to be tested. The glass substrate edge detection system of this embodiment can continuously detect two glass substrates at the same time.

The liquid crystal glass substrate described in this embodiment is soda glass, rectangular in shape, the length of the first side and the second side is 1850mm, and the length of the third side and the fourth side is 1500mm. The edge detection system of the glass substrate detects two glass substrates at the same time, as shown in Figure 3.

In this embodiment, the third detector 3 and the fourth detector 4 move synchronously, and the moving speed is V ₂ , and V ₂ is the sum of V ₀ and V ₁ in Embodiment 2, that is, the third detector 3 and the fourth detector 4 The detector 4 moves synchronously with the glass substrate while moving along the third side and the fourth side, so that the detection of the edge of the glass substrate is completed under the condition that the conveyor belt moves continuously.

In this embodiment, the third detector 3 and the fourth detector 4 quickly return to the original starting point after completing the detection of a group of third sides and fourth sides, and repeat the above process for the third side of the next group of glass substrates. Detect the side and the fourth side, or quickly move to the point on the opposite side to the original starting point and wait until the next group of glass sheets passes by in the direction opposite to the above V ₁ , to the next group of third sides and the fourth side for detection.

Other detection steps are the same as in Example 2 or adjusted accordingly.

The speed V ₀ of the glass substrate to be measured is 166mm/s with the conveyor belt, the speed V ₂ of the third detector 3 and the fourth detector 4 is 259.9mm/s, and the distance between the glass substrate 5 and the glass substrate 6 is 40cm , the distance between the glass substrate 6 and the glass substrate 7 is also 40cm.

In this embodiment, the time to complete the detection of the edge of a glass substrate is 11.1s.

The present invention can detect multiple glass substrates according to the detection method in embodiment 2 or embodiment 3;

According to the detection characteristics of other detectors, the present invention can adjust the moving speed of the transmission belt and the driver, etc., so as to be applicable to other detectors;

The speed mentioned in the present invention includes speed and direction.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the present invention. within the scope of the technical solution of the invention.

Claims (10)

1. an edge detecting system for glass substrate, described glass substrate have first side, second side, the 3rd side and Four side, described first side is parallel with second side, it is characterised in that:

Described detecting system includes driving means, the first detector, the second detector, the 3rd detector and the 4th detector, institute The driving means stated includes a driver or two drivers,

The first described detector and the second detector are fixedly installed；

The 3rd described detector and the 4th detector are jointly by a driver drives；Or, the 3rd described detector by One driver drives, and the 4th detector is by another driver drives.

The edge detecting system of a kind of glass substrate the most according to claim 1, it is characterised in that:

Described driving means is driven by servomotor.

The edge detecting system of a kind of glass substrate the most according to claim 1, it is characterised in that:

The first described detector and the vertical dimension of the 3rd detector and the first side of glass substrate or the length of second side Spend identical.

4. according to the edge detecting system of a kind of glass substrate described in claim 1 or 3, it is characterised in that:

Described the first detector, the second detector, the 3rd detector, the 4th detector are on-line checking device or offline inspection Device.

5. the edge detection method of a glass substrate, it is characterised in that:

Described glass substrate has first side, second side, the 3rd side and four side, described first side and the second side Limit is parallel；Use the first detector, the second detector, the 3rd detector, the 4th detector respectively to described first side, Dual side-edge, the 3rd side and four side detect；

The first described detector and the second detector are fixedly installed, and the glass substrate described in conveying moves along preset direction, institute Stating the detection region through the first detector, the first side, described second side, through the detection region of the second detector, obtains Described first side and the detection data of described second side plate；

Drive the 3rd detector, make the detection region of described 3rd detector along described 3rd sideways motion, obtain the described 3rd The detection data of side；

Drive the 4th detector, make the detection region of described 4th detector move along described four side, obtain the described 4th The detection data of side.

The edge detection method of a kind of glass substrate the most according to claim 5, it is characterised in that:

Described the first detector, the second detector, the 3rd detector, the 4th detector are on-line checking device or offline inspection Device.

The edge detection method of a kind of glass substrate the most according to claim 5, it is characterised in that:

The 3rd described detector and the 4th detector are jointly by a driver drives；

Or, the 3rd described detector is by a driver drives, and the 4th detector is by another driver drives.

8. according to the edge detection method of a kind of glass substrate according to any one of claim 5-7, it is characterised in that to one The method that block glass substrate to be measured carries out detecting is:

The first described detector and the second detector are fixedly installed, and described glass substrate to be measured moves along preset direction, complete Paired glass substrate first side to be measured and the detection of second side；

The 3rd described detector and the 4th detector are respectively under the induced effect of two drivers, respectively along glass base to be measured 3rd side of plate and four side motion, complete glass substrate the 3rd to be measured side and the detection of four side.

9. according to the edge detection method of a kind of glass substrate according to any one of claim 5-7, it is characterised in that to two The method that block carries out detecting with top glass substrate is:

The first described detector and the second detector are fixedly installed, and glass substrate to be measured moves along preset direction, complete to treat Survey glass substrate first side and the detection of second side；

The 3rd described detector and the 4th detector are under the induced effect of driver, respectively along the second glass substrate to be measured The four side motion of the 3rd side and the first glass substrate to be measured, to complete detection, the 3rd described detector and the 4th inspection Survey the 3rd between the first glass substrate to be measured and the second glass substrate to be measured and described detector of device and the 4th detector Making first to be synchronized with the movement, the first described speed being synchronized with the movement is First Speed,

Carry out in the two pieces of glass substrates detected simultaneously, be positioned at glass substrate motion preset direction front for the first glass to be measured Glass substrate, be located behind for the second glass substrate to be measured.

The edge detection method of a kind of glass substrate the most according to claim 9, it is characterised in that: to more than two pieces glass The method that glass substrate carries out detecting is:

The first described detector and the second detector are fixedly installed, and glass substrate to be measured moves along preset direction, complete to treat Surveying glass substrate first side and the detection of second side, the movement velocity of glass substrate to be measured is second speed；

The 3rd described detector and the 4th detector are under the induced effect of driver, respectively along the second glass substrate to be measured The four side motion of the 3rd side and the first glass substrate to be measured, to complete detection, the 3rd described detector and the 4th inspection Survey the 3rd between the first glass substrate to be measured and the second glass substrate to be measured and described detector of device and the 4th detector Making second to be synchronized with the movement, the second described speed being synchronized with the movement is third speed, described third speed be First Speed and Second speed sum,

Carry out in the two pieces of glass substrates detected simultaneously, be positioned at glass substrate motion preset direction front for the first glass to be measured Glass substrate, be located behind for the second glass substrate to be measured.