Lifting and tensioning mechanism of automatic substrate glass inspection machine

By designing a lifting and tensioning mechanism including tensioning idler and tensioning pulley in the automatic inspection machine of the substrate glass, the vibration, noise and friction losses caused by excessive length of the synchronization belt are solved, and the stability of the transmission and the service life of the synchronization belt are improved, while reducing the risk of glass damage.

CN119802173APending Publication Date: 2025-04-11IRICO DISPLAY DEVICES CO LTD
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Patent Information

Application Number
CN202411781192.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-04-11

AI Technical Summary

Technical Problem

In the production of existing substrate glass, excessive length of synchronization belt leads to increased vibration, noise and friction losses, affecting the transmission efficiency and service life of synchronization belt. At the same time, excessively long conveyor belts will accumulate elastic deformation during operation, resulting in unnecessary impact and squeeze of the glass during transmission, increasing the risk of scratches, damage or internal stress concentration on the glass surface.

Method used

A substrate glass automatic inspection machine lifting tensioning mechanism is designed, including a tensioning bracket and tensioning wheel. Through the coordination of the tensioning idler and tensioning pulley, and the precise adjustment of the adjustment block, it ensures that the conveyor belt maintains a constant tension during operation, reducing vibration and elastic deformation.

Benefits of technology

By precisely controlling the tension of the conveyor belt, the transmission instability caused by vibration and elastic deformation is reduced, the transmission stability and the service life of the synchronization belt are improved, the risk of scratches and damage on the glass surface is reduced, and the friction loss and noise of the conveyor belt are reduced.

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Abstract

The invention provides a substrate glass automatic inspection machine lifting and tensioning mechanism which comprises a connecting frame fixed to an automatic inspection station, one end of the connecting frame is fixedly connected with a tensioning support, the tensioning support is of an integrally-formed U-shaped structure, and two tensioning wheel supports opposite in position are connected through a tensioning support cover plate. The tensioning belt wheel is installed between the two tensioning wheel supports, the tensioning idle wheel is installed on the two adjusting blocks opposite in position, the adjusting blocks are connected with the tensioning support cover plate through screws, and meanwhile fine adjustment of the positions of the adjusting blocks is achieved through positioning bolts. According to the mechanism, the synchronous belt can be tensioned and controlled within a specified range, large shaking of the synchronous belt is avoided, abrasion of the belt and a belt wheel is reduced, the service life of a toothed belt and a guide wheel is prolonged, equipment hidden dangers caused by untimely tensioning operation are greatly reduced, the replacement frequency is reduced, and the cost of spare parts is also reduced.
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Description

Technical Field

[0001] The invention belongs to the technical field of substrate glass production, and in particular relates to a lifting and tensioning mechanism of an automatic substrate glass inspection machine. Background Art

[0002] In the overflow method substrate glass production, the substrate glass is broken from the mother board by the board breaking robot and handed over to the board loading robot. The board loading robot hangs the glass on the conveyor belt and moves it to the next station through the tooling trolley to reach the automatic inspection machine station to detect the quality of the glass. The conveyor belt inspection machine station is designed as a double-layer station, and the upper layer is designed as a lifting station. The guide rail + synchronous belt + servo motor form ensures that the glass passes through the inspection machine at a uniform speed.

[0003] Because the synchronous belt is too long, it will generate extra vibration and noise during operation, increase friction loss, reduce transmission efficiency, and affect transmission stability and the service life of the synchronous belt. At the same time, a conveyor belt that is too long will accumulate elastic deformation over a long distance during operation, causing unnecessary impact and extrusion of the glass during transmission, thereby increasing the risk of scratches, breakage, or internal stress concentration on the glass surface.

[0004] In order to alleviate the problems of noise, vibration and deformation accumulation caused by the excessive length of the synchronous belt, the existing synchronous belt adopts a single lifting and tensioning mechanism to adjust the position offset and tensioning degree caused by the long-distance transmission of the conveyor belt. However, this single lifting and tensioning mechanism will increase the friction loss of the conveyor belt. When checking and adjusting the tightness of the synchronous belt, the lifting and tensioning mechanism cannot easily arch the conveyor belt, nor can it be too tight against the transmission belt, resulting in a decrease in transmission efficiency. Summary of the invention

[0005] In order to overcome the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a lifting and tensioning mechanism for a substrate glass automatic inspection machine, which can control the tension of the synchronous belt within a specified range, avoid large shaking of the synchronous belt, reduce the wear of the belt and pulley, and affect the life of the toothed belt and guide wheel.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a lifting and tensioning mechanism for an automatic substrate glass inspection machine, comprising a tensioning bracket and a tensioning wheel; the tensioning bracket is an integrally formed U-shaped structure, comprising a tensioning bracket cover plate, and two tensioning wheel brackets parallel to each other and opposite to each other are arranged below the tensioning bracket cover plate; The tensioning wheel is arranged in the inner cavity of the U-shaped structure of the tensioning bracket, and the tensioning wheel includes a tensioning pulley and a tensioning idler wheel. The two ends of the wheel shaft of the tensioning pulley are respectively fixedly connected to the two tensioning wheel brackets; the two ends of the wheel shaft of the tensioning idler wheel are respectively fixedly connected to the two adjustment blocks; the adjustment block is connected to the tensioning bracket; a positioning bolt is provided on the tensioning bracket cover plate, and the positioning bolt is connected to the adjustment block; The axle of the tension idler wheel and the axle of the tension belt wheel are arranged parallel to each other and a conveyor belt channel is reserved. The tension bracket is arranged on the moving path of the conveyor belt of the substrate glass automatic inspection machine.

[0007] Preferably, a threaded through hole is provided on the tensioning bracket cover plate, and the positioning bolt passes through the threaded through hole and is connected to the adjustment block.

[0008] Preferably, the adjustment block is connected to the tensioning bracket via a connecting bolt, and the bolt head of the connecting bolt is arranged on the upper surface of the tensioning bracket cover plate.

[0009] Preferably, one of the adjustment blocks is connected to two positioning bolts, and the positioning bolts are symmetrically arranged with the connecting bolt as the center.

[0010] Preferably, a long through hole is opened on the upper surface of the tensioning bracket cover, and one end of the positioning bolt and the connecting bolt passes through the long through hole and is installed on the upper surface of the tensioning bracket cover. The maximum distance in the length direction of the long through hole is not less than the maximum distance between the two positioning bolts.

[0011] Preferably, there are two tensioning pulleys, the tensioning idler pulley is arranged between the tensioning pulley and the tensioning bracket cover plate, and the tensioning idler pulley is arranged between the two tensioning pulleys.

[0012] Preferably, an L-shaped mechanism bracket is further included, wherein the free end of the long side of the L-shaped mechanism bracket is connected to the tension wheel bracket, and the free end of the short side of the L-shaped mechanism bracket is fixed on the station of the substrate glass automatic inspection machine.

[0013] Preferably, it also includes a connecting side plate, the center of which is fixedly connected to the free end of the long side of the L-shaped bracket; the tension wheel bracket is attached to and fastened to the connecting side plate.

[0014] Preferably, fastening threaded through holes are opened on both sides perpendicular to the tensioning wheel bracket and the tensioning bracket cover plate; a long through hole is opened on each side of the connecting cover plate in the vertical direction, and the tensioning wheel bracket and the connecting side plate are fastened and fitted by the long through holes and fastening threaded through hole bolts.

[0015] Preferably, the edges of the connecting side panels are provided with flanges.

[0016] The second objective of the present invention is to disclose an automatic glass substrate inspection machine equipped with the above-mentioned automatic glass substrate inspection machine lifting and tensioning mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a lifting and tensioning mechanism for an automatic substrate glass inspection machine. Through the cooperation of a tensioning idler wheel and a tensioning belt wheel, and the precise adjustment of an adjusting block, the present invention can ensure that the conveyor belt maintains a constant tension during operation, effectively reduce the transmission instability caused by vibration and elastic deformation, and ensure that the conveyor belt (especially the synchronous belt) can maintain an appropriate tension during operation, thereby improving the transmission stability and the service life of the synchronous belt. The present invention can achieve precise control of the tension of the conveyor belt through simple positioning bolt adjustment, so that the synchronous belt can have an appropriate tension, reduce the friction loss between the synchronous belt and the pulley, reduce the wear rate, thereby extending the service life of the synchronous belt, reducing the replacement frequency and maintenance cost, and at the same time can reduce the vibration and noise of the conveyor belt during operation, and improve the working environment.

[0018] The tensioning mechanism of the present invention adopts a compact design and occupies a small space, which helps to improve the space utilization rate of the production workshop; through the design of the L-shaped mechanism bracket and the connecting cover plate, the present invention can be conveniently installed on the workstation of the substrate glass automatic inspection machine, thereby enhancing the adaptability and flexibility of the equipment; the belt tensioning adjustment is performed by the present device, with high adjustment accuracy and precise tensioning degree, thereby reducing the number of tensioning times, eliminating the need for regular tensioning operations, and reducing the labor intensity of operators; after the belt is adjusted by the tensioning mechanism, the number of times the belt needs to be tensioned is reduced within the same operating time, so that within the same operating time, the number of tensioning times is reduced, thereby greatly reducing the equipment hidden dangers caused by untimely tensioning operations, while increasing the service life of the belt, reducing the number of replacements, and reducing the cost of spare parts.

[0019] Furthermore, the automatic substrate glass inspection machine equipped with the above-mentioned automatic substrate glass inspection machine lifting and tensioning mechanism solves the problem that the excessive length of the synchronous belt will generate additional vibration and noise during operation, increase friction loss, lead to reduced transmission efficiency, affect transmission stability and the service life of the synchronous belt, by flexibly and accurately adjusting the tension of the synchronous belt and correcting its movement trajectory. It avoids the accumulation of elastic deformation of the excessively long synchronous belt over a long distance during operation, so that the glass will not be affected by the impact and extrusion caused by the operation of the synchronous belt during transmission, thereby reducing the risk of scratches, breakage or internal stress concentration on the glass surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional diagram of the device of the present invention; Figure 2 It is a right side view of the device of the present invention; Figure 3 It is a front view of the device of the present invention; Among them: tensioning bracket cover 1; tensioning wheel bracket 2; left tensioning wheel bracket 2-1; right tensioning wheel bracket 2-2; positioning bolt 3-1; left positioning bolts 3-1-1, 3-1-2; right positioning bolts 3-1-3, 3-1-4; connecting bolt 3-2; left connecting bolt 3-2-1; left connecting bolt 3-2-2; adjusting block 4; left adjusting block 4-1; right adjusting block 4-2; tensioning pulley 5; tensioning idler 6; L-shaped mechanism bracket 7; crossbeam bracket 7-1; vertical bracket 7-2; fastening threaded through hole 8; right fastening threaded through hole 8-1, 8-2, 8-3, 8-4; left fastening threaded through hole 8-5; connecting side panel 9; connecting side panel long strip through hole 10-1, connecting side panel long strip through hole 10-2; connecting side panel flange 11; profile angle code 12; angle iron fixing piece 13. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings: The present application provides a lifting belt tensioning mechanism for a substrate glass automatic inspection machine, such as a three-dimensional Figure 1 As shown, the present application concentrates the core working parts of the tensioning mechanism in a U-shaped structure to form a tensioning bracket, and uses an L-shaped bracket as a connecting piece to fix the tensioning bracket on the substrate glass automatic inspection machine.

[0024] The specific structure of the lifting belt tensioning mechanism of the substrate glass automatic inspection machine is as follows: See the mechanism stereogram Figure 1 And the front view of the organization Figure 3 The tensioning bracket is a U-shaped structure, including a tensioning bracket cover 1, a left tensioning wheel bracket 2-1, a right tensioning wheel bracket 2-2, a left positioning bolt 3-1-1, a left positioning bolt 3-1-2, a right positioning bolt 3-1-3, a right positioning bolt 3-1-4, a left connecting bolt 3-2-1, a right connecting bolt 3-2-2, a left adjusting block 4-1, a right adjusting block 4-2, a tensioning pulley 5, a tensioning idler wheel 6, an L-shaped bracket 7, a crossbeam bracket 7-1, a vertical bracket 7-1, right fastening threaded through holes 8-1, 8-2, 8-3, 8-4, a left fastening threaded through hole 8-5, a connecting side plate 9, a connecting side plate long strip through hole 10-1, a connecting side plate long strip through hole 10-2, a connecting side plate flange 11, a profile angle code 12, and an angle iron fixing 13.

[0025] like Figure 1 As shown, the closed end of the U-shaped structure of the tensioning bracket is a tensioning bracket cover plate 1, and the tensioning bracket cover plate 1 is connected to two tensioning wheel brackets 2-1 and 2-2 which are parallel to each other and opposite to each other; a threaded cover plate through hole is opened on the tensioning bracket cover plate 1, and the corresponding left positioning bolt 3-1-1, left positioning bolt 3-1-2, and left connecting bolt 3-2-1 are respectively connected to the left adjustment block 4-1 through the three threaded through holes on the left side; the corresponding right positioning bolt 3-1-3, right positioning bolt 3-1-4, and right connecting bolt 3-2-2 are respectively connected to the right adjustment block 4-2 through the three threaded through holes on the right side, the connecting bolt is used to install the adjustment block, and the positioning bolt is used to adjust the position of the adjustment block relative to the tensioning bracket cover plate.

[0026] The tension pulley 5 is an 8M synchronous pulley, and the tension idler 6 is a smooth pulley. The tension pulley 5 includes a friction unit, a torsion spring, a bearing and a pulley. The part of the tension pulley that contacts the belt and generates friction ensures that the belt can remain in a tensioned state. The torsion spring provides the force required for tensioning, ensuring that the belt always has appropriate tension, supports the rotation of the tension pulley, reduces friction and wear, and improves transmission efficiency. During the operation of the tension pulley, the torsion spring is used to generate a force to tension the belt, so that the belt can exert appropriate pressure on the working tension pulley. The tension idler includes a rim, a spoke, a hub and a bearing.

[0027] The tension pulley 5 and the tension idler wheel 6 are interlaced in the vertical direction, so that the long synchronous belt can be transmitted forward through the tension pulley 5 and the tension idler wheel 6. By adjusting the positioning bolt, the distance between the tension idler wheel and the tension bracket cover is adjusted, and the tension of the synchronous belt is changed according to the real-time working status of the conveyor belt.

[0028] In some embodiments of the present invention, the cover plate through hole group includes independent through holes, which are respectively used to threadably cooperate with the connecting bolts and the positioning bolts. yWhen the positioning bolt 3-1 is in the position of the conveyor belt, the adjusting block moves downward, driving the idler wheel downward, thereby increasing the tension of the conveyor belt; when the positioning bolt 3-1 is unscrewed, the adjusting block moves upward, driving the idler wheel upward, thereby decreasing the tension of the conveyor belt.

[0029] In some other embodiments of the present invention, the threaded cover plate through hole on the tension bracket cover plate 1 can be a long through hole, and the corresponding positioning bolt 3-1 passes through the adjustment block 4 from bottom to top and passes through the long through hole, and the upper end of the positioning bolt 3-1 is fixed to the upper surface of the long through hole using a nut. y When the nut is screwed in, the adjustment block moves up, driving the tension idler wheel 6 to move up, so that the tension of the conveyor belt is reduced; when the nut is screwed out, the adjustment block moves down, driving the tension idler wheel 6 to move down, so that the tension of the conveyor belt is increased. At the same time, in the case of opening a long through hole, by adjusting the relative position of the positioning bolt 3-1 in the length direction of the long through hole, the tension of the conveyor belt can be reduced. z Direction adjusts the position of the idler wheel 6.

[0030] Combined with Figure 1 and attached Figure 2 The tensioning mechanism proposed in the present invention also includes an L-shaped bracket 7, which is spliced ​​by two profile brackets connected perpendicularly to each other. The two profile brackets are respectively a vertical profile bracket 7-2 and a crossbeam profile bracket 7-1, which are fixed by a profile angle code 12 and are perpendicular to each other; the lower end of the vertical profile bracket 7-2 is fixed to the substrate glass automatic inspection machine by two angle iron fixings 13, and the left end of the crossbeam profile bracket 7-2 is a free end, which is fixed to the connecting cover plate 9 by a profile angle code 12; the right tensioning wheel bracket long strip through hole 10-1 and the right tensioning wheel bracket long strip through hole 10-2 are opened on the left and right sides of the connecting cover plate 9. The long strip through hole 10-1 of the connecting side panel corresponds to the right fastening threaded through hole 8-1 and the right fastening threaded through hole 8-2 on the tensioning wheel bracket, and the long strip through hole 10-2 of the connecting side panel corresponds to the right fastening threaded through hole 8-3 and the right fastening threaded through hole 8-4 on the tensioning wheel bracket. Four bolts can respectively pass through the long strip through hole 10-1 and the right fastening threaded through hole 8-1 of the right tensioning wheel bracket, connect the long strip through hole 10-1 of the connecting side panel and the right fastening threaded through hole 8-2, connect the long strip through hole 10-2 of the connecting side panel and the right fastening threaded through hole 8-3, connect the long strip through hole 10-2 of the connecting side panel and the right fastening threaded through hole 8-4, and fix the connecting side panel 9 to the right tensioning wheel bracket, that is, fix the tensioning bracket to the L-shaped bracket 7.

[0031] In some embodiments of the present invention, the right fastening threaded through hole may only include the right fastening threaded through hole 8-1 and the right fastening threaded through hole 8-3. In this design, by adjusting the matching position of the connecting side panel long strip through hole 10-1 and the right fastening threaded through hole 8-1, the matching position of the connecting side panel long strip through hole 10-2 and the right fastening threaded through hole 8-3 is adjusted accordingly, so that the height of the tensioning bracket relative to the ground is adjusted as a whole, and then the height of the tensioning pulley 5 relative to the ground can be adjusted, thereby adjusting the tensioning degree of the conveyor belt.

[0032] In an embodiment of the present invention, the tension bracket is adjusted according to the real-time working condition of the power transmission belt. y / z Adjustment in two directions. First, adjust the distance between the tensioning idler wheel 6 and the tensioning bracket cover plate 1 by adjusting the block 4 and the positioning bolt 3-1, that is, y Through the long through hole on the tensioning bracket cover plate 1, the radial distance between the tensioning idler wheel 6 and the tensioning pulley 5 is achieved, that is, z In addition, the position of the tensioning bracket relative to the fixed L-shaped bracket 7 can be adjusted through the connecting side plate long strip through hole 10-1 and the connecting side plate long strip through hole 10-2 on the connecting cover plate 9 of the L-shaped bracket 7, that is, y direction, thereby achieving flexible and fine adjustment of the position of the entire tensioning mechanism relative to the transmission belt.

[0033] Example The tensioning bracket of the device proposed by the present invention is first fixedly connected to the right tensioning wheel bracket 2-2 of the tensioning bracket by connecting the side plate 9 and the left end of the crossbeam bracket 7-1 of the L-shaped bracket through two profile angle codes 12, and then two bolts are used to fasten the right fastening threaded through hole 8-1 and the right fastening threaded through hole 8-2 to the long through hole 10-1 of the connecting side plate, and another two bolts are used to fasten the right fastening threaded through hole 8-3 and the right fastening threaded through hole 8-4 to the long through hole 10-2 of the connecting side plate, and the tensioning bracket is installed and fixed on the L-shaped bracket, and the lower end of the vertical bracket 7-2 of the L-shaped bracket is fixed to the substrate glass automatic inspection machine through the angle iron fixing piece 13. The crossbeam bracket 7-1 and the vertical bracket 7-2 of the L-shaped bracket are fixedly connected vertically to each other through the angle iron fixing piece 13. Adjust the positioning bolt 3-1 that is threadedly matched with the tensioning bracket cover 1, adjust the adjusting block 4-1 and the adjusting block 4-2, and then adjust the mutual distance between the tensioning idler wheel 6 and the tensioning pulley 5, so that the synchronous belt passes through the synchronous belt channel between the tensioning pulley 5 and the tensioning idler wheel 6, and the synchronous belt is engaged with the 8M synchronous pulley 5.

[0034] After the synchronous belt has been working for a period of time, its tension changes: 1) When the tension of the synchronous belt is reduced and needs to be increased, the positioning bolts 3-1-1, 3-1-2, 3-1-3 and 3-1-4 are screwed in synchronously, so that the left adjustment block 4-1 and the right adjustment block 4-2 sink, the curvature of the synchronous belt channel between the synchronous pulley 5 and the synchronous idler wheel 6 becomes higher, and the tension of the synchronous belt increases; 2) When the tension of the synchronous belt is too high and it is necessary to reduce the tension, the positioning bolts 3-1-1, 3-1-2, 3-1-3 and 3-1-4 are simultaneously unscrewed to raise the left adjustment block 4-1 and the right adjustment block 4-2, raise the position of the synchronous idler wheel 6, lower the curvature of the synchronous belt channel between the synchronous pulley 5 and the synchronous idler wheel 6, and reduce the tension of the synchronous belt.

[0035] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A lifting and tensioning mechanism for an automatic substrate glass inspection machine, characterized in that: It comprises a tensioning bracket and a tensioning wheel; the tensioning bracket is an integrally formed U-shaped structure, comprising a tensioning bracket cover plate (1), and two tensioning wheel brackets (2) are arranged parallel to each other and opposite to each other under the tensioning bracket cover plate (1); The tensioning wheel is arranged in the inner cavity of the U-shaped structure of the tensioning bracket, and the tensioning wheel comprises a tensioning pulley (5) and a tensioning idler wheel (6), and the two ends of the wheel shaft of the tensioning pulley (5) are respectively connected to the two tensioning wheel brackets (2); the two ends of the wheel shaft of the tensioning idler wheel (6) are respectively connected to two adjustment blocks (4), and the adjustment blocks (4) are connected to the tensioning bracket; the tensioning bracket cover plate (1) is provided with a positioning bolt (3-1), and the positioning bolt (3-1) is connected to the adjustment block (4); The axle of the tensioning idler wheel (6) is arranged parallel to the axle of the tensioning belt wheel (5) and a conveyor belt channel is reserved, and the tensioning bracket is arranged on the movement path of the conveyor belt of the substrate glass automatic inspection machine.

2. The lifting and tensioning mechanism of the automatic substrate glass inspection machine according to claim 1, characterized in that: A threaded through hole is provided on the tensioning bracket cover plate (1), and the positioning bolt (3-1) passes through the threaded through hole and is connected to the adjustment block (4).

3. The lifting and tensioning mechanism of the automatic substrate glass inspection machine according to claim 1, characterized in that: The adjustment block (4) is connected to the tensioning bracket via a connecting bolt (3-2), and the bolt head of the connecting bolt (3-2) is arranged on the upper surface of the tensioning bracket cover plate (1).

4. The lifting and tensioning mechanism of the automatic glass substrate inspection machine according to claim 3, characterized in that: One of the adjustment blocks (4) is connected to two positioning bolts (3-1), and the positioning bolts (3-1) are symmetrically arranged with the connecting bolt (3-2) as the center.

5. The lifting and tensioning mechanism of the automatic substrate glass inspection machine according to claim 4, characterized in that: The upper surface of the tensioning bracket cover plate (1) is provided with a long through hole, one end of the positioning bolt (3-1) and the connecting bolt (3-2) are mounted on the upper surface of the tensioning bracket cover plate (1), and the maximum distance in the length direction of the long through hole is not less than the maximum distance between the two positioning bolts (3-1).

6. The lifting and tensioning mechanism of the automatic glass substrate inspection machine according to claim 1, characterized in that: The tensioning pulleys (5) are provided with two, the tensioning idler wheel (6) is arranged between the tensioning pulley (5) and the tensioning bracket cover plate (1), and the tensioning idler wheel (6) is arranged between the two tensioning pulleys (5).

7. The lifting and tensioning mechanism of the automatic substrate glass inspection machine according to claim 1, characterized in that: It also comprises an L-shaped mechanism bracket (7), the free end of the long side of the L-shaped mechanism bracket is connected to the tension wheel bracket (2), and the free end of the short side of the L-shaped mechanism bracket is fixed on the workstation of the substrate glass automatic inspection machine.

8. The lifting and tensioning mechanism of the automatic glass substrate inspection machine according to claim 7, characterized in that: It also comprises a connecting side plate (9), the center of which is fixedly connected to the free end of the long side of the L-shaped bracket; the tension wheel bracket (2) is fitted and fastened to the connecting side plate (9).

9. The lifting and tensioning mechanism of the automatic substrate glass inspection machine according to claim 8, characterized in that: A fastening threaded through hole (8) is provided on both sides of the tensioning wheel bracket (2) and the tensioning bracket cover plate (1) in a vertical direction; a long through hole (10) is provided on both sides of the connecting cover plate (9) in a vertical direction, and the tensioning wheel bracket (2) and the connecting side plate (9) are fastened and fitted together by bolts through the long through hole (10) and the fastening threaded through hole (8).

10. A substrate glass automatic inspection machine, characterized in that: The lifting and tensioning mechanism of the automatic glass substrate inspection machine according to any one of claims 1 to 9 is arranged on the conveyor belt channel.