Device for measuring thickness of glass on line

Abstract

The invention provides a device for measuring the thickness of glass on line, which comprises a glass conveying roller way (1), and is characterized in that a bracket (2) is bridged on the glass conveying roller way (1), a plurality of moving frames (3) which are correspondingly matched with each other are arranged on the bracket (2), a cylinder (4) is arranged on each moving frame (3), the output end of each cylinder (4) is connected with a longitudinal moving assembly (5), and the longitudinal moving assembly (5) is connected with the glass conveying roller way (1). A cantilever (6) is arranged on the longitudinal moving assembly (5), and one end of the cantilever (6) is connected with a measuring assembly (7). The device has a simple structure, is convenient to use, can detect the thickness change of the glass plate on line in real time, avoids greater waste caused by lagging due to process change and equipment failure of the calender, and reduces the workload of quality inspectors.

Description

Technical Field

[0001] The invention relates to the field of glass production, in particular to a device for measuring glass thickness online. Background Art

[0002] The calendering glass forming process will cause the glass thickness to change during the adjustment process. The principle of calendering is mainly to apply pressure to the upper roller through the pressure rod on the calender, so that the gap between the upper and lower rollers is reduced, and the high-temperature glass liquid flows out of the gap to cool and is pressed into a certain thickness.

[0003] The calendering roller expands and contracts at high temperatures. In the horizontal direction, the edge of the glass plate has a low temperature and a thick thickness, while the middle has a high temperature and a thin thickness. In the vertical direction, as the calendering roller rotates one circle, the gap between them fluctuates, and the thickness changes periodically according to the length of the roller diameter.

[0004] In our company's actual production, according to customer technical requirements, the general production specification thickness is controlled within ±0.2mm. For example, when producing 2.0mm glass, the thickest point is controlled below 2.2mm and the thinnest point is controlled above 1.8mm.

[0005] However, in cases of head smashing, washing the upper roller, lifting the thickness, pressing the thickness, melting temperature fluctuations, abnormal operation of the self-pressing rod of the calender, etc., the glass thickness fluctuates greatly and needs to be re-measured. Quality inspectors measure the thickness by sampling and testing, and usually cannot adjust the thickness of the glass to the right level at one time.

[0006] This will cause a huge waste of glass from the time it comes out of the F zone of the annealing furnace to the cold end sampling station. In particular, the abnormal operation of the self-pressing rod of the calender will cause the glass thickness to be unqualified within a few hours, and the film will be directly transferred to the next process, which will cause a lot of manpower and material resources to be wasted. Therefore, an online thickness measurement device is urgently needed to avoid the above situation and reduce production losses. Summary of the invention

[0007] The present invention aims to overcome the deficiencies in the prior art and provide a device for measuring glass thickness online.

[0008] This application provides the following technical solutions: A device for measuring glass thickness online includes a glass conveying roller and is characterized in that: a bracket is straddled on the glass conveying roller, a plurality of corresponding movable racks are arranged on the bracket, a cylinder is arranged on each movable rack, a longitudinal movable assembly is connected to the output end of the cylinder, a cantilever is arranged on the longitudinal movable assembly, a glass thickness measuring assembly is connected to one end of the cantilever, and a control module is arranged on the bracket to form an electrical signal connection with the glass thickness measuring assembly.

[0009] On the basis of the above technical solutions, there are also the following further technical solutions: The mobile frame includes a group of groove wheels distributed on the cross beam of the frame, all the groove wheels are connected to the frame body on one side, and guide rails corresponding to the groove wheels are also arranged on the cross beam of the frame.

[0010] The longitudinal moving component includes a base plate connected to the output end of the cylinder, a rectangular block is provided on the base plate, a slot body is provided on the rectangular block, a slider is provided in the slot body, a bolt is provided on the slot body, one end of the bolt passes through the slider and corresponds to it, and the slider is driven to move longitudinally in the slot body through the forward and reverse rotation of the bolt.

[0011] The glass thickness measuring component includes a main body, a longitudinal groove is provided in the main body, a longitudinally distributed spring is provided in the longitudinal groove, a moving block is connected to the lower end of the spring, a longitudinally distributed vertical rod is connected to the moving block, the lower end of the vertical rod passes through the longitudinal groove and extends to the bottom of the main body, a roller is connected to the lower end of the vertical rod, a longitudinal displacement sensor is provided on the main body to form a dynamic sensing cooperation with the vertical rod, and the longitudinal displacement sensor forms an electrical signal transmission cooperation with the control module.

[0012] The bracket is provided with a ruler corresponding to the moving bracket.

[0013] Advantages of the invention: The present invention has a simple structure and is easy to use. It can detect the thickness change of the glass plate online in real time, avoid greater waste caused by delayed detection due to process changes and calender equipment failures, and reduce the workload of quality inspectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural view of the present invention; Figure 2 is a side view of the present invention; Figure 3 is a top view of the present invention; Figure 4 yes Figure 1 Zoom in to A in the middle; Figure 5 yes Figure 2 Zoom in to the B direction. DETAILED DESCRIPTION

[0015] like Figure 1-5 As shown, an online device for measuring glass thickness includes a glass conveying roller 1, a door-shaped bracket 2 is straddled on the glass conveying roller 1, and at least three corresponding movable brackets 3 are arranged on the crossbeam 2a of the bracket 2. A control module 8 with a touch screen input is connected to a pillar on one side of the bracket 2.

[0016] Each of the mobile frames 3 includes a guide rail 3c protruding from the upper / lower surface of the cross beam 2a of the bracket 2, and the guide rail 3c is distributed in the same direction as the cross beam 2a. A pair of sheaves 3a are provided on each cross beam 2a, and all the sheaves 3a are connected to a frame body 3b on one side. The frame body 3b includes a vertical plate 13a, and a group of pull rods 13b are connected to the surface of one side of the vertical plate 13a. One end of each pull rod 13b is connected to the corresponding sheave 3a through a bearing, so that The groove wheel can drive the frame to move when the guide rail moves. A wheel frame 3d is installed on two of the pull rods 13b on the upper side of the cross beam 2a, and a locking bolt 3e corresponding to the guide rail 3c is provided on the wheel frame 3d.

[0017] A scale (not shown) distributed along the width direction of the glass conveyor roller 1 is provided on the side wall of the crossbeam 2a, so that the staff can clearly know where the frame 3b moves to in the width direction of the glass conveyor roller 1 when pushing the frame 3b.

[0018] A cylinder 4 is mounted on the other side of the vertical plate 13a, and the axial direction of the output shaft of the cylinder 4 is perpendicular to the surface of the glass plate 9 transported on the glass conveying roller 1. A longitudinal moving assembly 5 is connected to the output end of the cylinder 4, and the longitudinal moving assembly 5 includes a base plate 4a connected to the output end of the cylinder 4, a rectangular block 4b is arranged on the base plate 4a, a groove body 4c is arranged on the rectangular block 4b, a corresponding sliding block 4d is arranged in the groove body 4c, and guide blocks 4g are extended from both sides of the sliding block 4d.

[0019] A bolt 4f is installed on the groove body 4c. One end of the bolt 4f passes through the slider 4d and corresponds to it. The slider 4d is driven to move longitudinally in the groove body 4c through the forward and reverse rotation of the bolt 4f.

[0020] A cantilever 6 is connected and fixed to the slider 4d, and a glass thickness measuring assembly 7 is connected to one end of the cantilever 6. The glass thickness measuring assembly 7 includes a rectangular cube-shaped main body 7a, a longitudinal groove 7b is provided in the main body 7a, a longitudinally distributed spring 7c is provided in the longitudinal groove 7b, a moving block 7d movable in the longitudinal groove 7b is connected to the lower end of the spring 7c, and a longitudinally distributed vertical rod 7e is connected to the moving block 7d. A longitudinal displacement sensor 7g is installed at the bottom of the main body 7a to form a dynamic sensing match with the vertical rod 7e, and the longitudinal displacement sensor 7g forms an electrical signal transmission match with the control module 8.

[0021] The lower end of the vertical rod 7e passes through the longitudinal groove 7b and extends to the bottom of the main body 7a, and a rubber roller 7f is connected to the lower end thereof.

[0022] Working process: Before use, first determine the width of the glass plate 9 to be produced, manually push the roller, move the frame to a suitable position, tighten the fixing bolts 13 to fix the frame, and lock the frame to prevent it from moving left and right.

[0023] Calibration: Open (vertically downward) the cylinder, the cylinder output shaft lowers the longitudinal moving component 5, adjust the bolt 4f, so that the roller 7f of the glass thickness measuring component 7 contacts the upper end of the roller shaft on the roller table, then the longitudinal displacement sensor 7g will display the corresponding value according to the displacement of the adjusting screw, and adjust the value to 0 on the touch screen of the control module 8.

[0024] After calibration, the cylinder is reset and the longitudinal moving assembly 5 is raised. Wait for the glass plate 9 to pass through the roller, then open the cylinder to lower the longitudinal moving assembly 5. The roller 7f contacts the glass plate surface, and the moving block 7d moves upward under the action of the vertical rod 7e, and the force is transmitted to the spring 7c. The reverse force of the spring 7c makes the roller 7f contact the upper surface of the glass plate 9.

[0025] When the thickness of the glass plate changes, the vertical rod 7e moves up and down, and the longitudinal displacement sensor 7g transmits the position signal to the control module according to the displacement, and the screen displays the value. The thickness value of the glass plate 9 is displayed every 5 seconds, and the three longitudinal displacement sensors connected by the three mobile frames 3 are summarized to the value of the control module for statistical average and range values. The average value shows the current average thickness of the glass; the range value can be used to determine the change in the curvature of the glass. A smaller change in the range value can be determined as a normal fluctuation in the thickness of the glass; a larger range value can be determined as an abnormal fluctuation in the curvature of the glass. When the thickness exceeds the threshold set in the control module, the alarm unit in the control module is triggered, and a photoelectric alarm is issued on the screen to notify the staff.

[0026] In actual production, the number of movable racks can be appropriately increased according to the span on the crossbeam 2a of the bracket 2 with a larger span.

Claims

1. A device for measuring glass thickness online, comprising a glass conveying roller (1), characterized in that: A support (2) is straddled on a glass conveying roller (1), a plurality of corresponding movable frames (3) are arranged on the support (2), a cylinder (4) is arranged on each movable frame (3), a longitudinal movable assembly (5) is connected to the output end of the cylinder (4), a cantilever (6) is arranged on the longitudinal movable assembly (5), a glass thickness measuring assembly (7) is connected to one end of the cantilever (6), and a control module (8) is arranged on the support (2) and forms an electrical signal connection with the glass thickness measuring assembly (7).

2. The device for measuring glass thickness online according to claim 1, characterized in that: The movable frame (3) comprises a group of groove wheels (3a) distributed on the cross beam (2a) of the support (2), all the groove wheels (3a) are connected to a frame body (3b) on one side, and a guide rail (3c) corresponding to the groove wheels (3a) is also provided on the cross beam (2a) of the support (2).

3. The device for measuring glass thickness online according to claim 1, characterized in that: The longitudinal movement component (5) comprises a base plate (4a) connected to the output end of the cylinder (4), a rectangular block (4b) is provided on the base plate (4a), a slot body (4c) is provided on the rectangular block (4b), a slider (4d) is provided in the slot body (4c), a bolt (4f) is provided on the slot body (4c), one end of the bolt (4f) passes through the slider (4d) and corresponds to the slider, and the slider (4d) is driven to move longitudinally in the slot body (4c) through the forward and reverse rotation of the bolt (4f).

4. The device for measuring glass thickness online according to claim 1, characterized in that: The glass thickness measuring assembly (7) comprises a main body (7a), a longitudinal groove (7b) is provided in the main body (7a), a longitudinally distributed spring (7c) is provided in the longitudinal groove (7b), a moving block (7d) is connected to the lower end of the spring (7c), a longitudinally distributed vertical rod (7e) is connected to the moving block (7d), the lower end of the vertical rod (7e) passes through the longitudinal groove (7b) and extends to the bottom of the main body (7a), a roller (7f) is connected to the lower end of the vertical rod (7e), a longitudinal displacement sensor (7g) is provided on the main body (7a) and forms a dynamic sensing match with the vertical rod (7e), and the longitudinal displacement sensor (7g) forms an electrical signal transmission match with the control module (8).

5. The device for measuring glass thickness online according to claim 1, characterized in that: The support (2) is provided with a scale which corresponds to the movable frame (3).

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