Edge rolling mechanism capable of being automatically disengaged when motor stops rotating

Abstract

The utility model discloses an automatic disengagement edge pulling mechanism during motor stalling, and relates to the technical field of glass substrate production, the edge pulling mechanism comprises two bearing seats, an edge pulling shaft, a spring and a driving module, the edge pulling shaft is rotatably connected in the bearing seats, the spring is arranged between the two bearing seats in an abutting mode, and the driving module is arranged on the edge pulling shaft. The driving module can drive the edge rolling shafts to rotate in the opposite directions and can enable the two edge rolling shafts and the bearing seat to be close to each other synchronously to extrude the spring, and after the driving module stops driving, the spring can push the two edge rolling shafts and the bearing seat away synchronously immediately. According to the edge pulling mechanism capable of being automatically disengaged when the motor stops rotating, through a pure mechanical structure, under the condition that the motor suddenly stops, the function of automatically disengagement of the edge pulling shaft can be achieved, and therefore it is guaranteed that the liquid crystal glass substrate forming process is safe and stable, and compared with an existing mode that the edge pulling shaft can only be disengaged manually by a worker in an emergency, the safety is greatly improved; and no process risk exists.

Description

Technical Field

[0001] The utility model relates to the technical field of glass substrate production, and particularly relates to a pulling edge mechanism that can automatically disengage when the motor stops rotating. Background Art

[0002] In the liquid crystal display (LCD) industry, the forming process of liquid crystal glass substrates is one of the key links in manufacturing high-quality liquid crystal panels. Among them, the overflow method, as an advanced forming technology, is widely favored for its ability to produce liquid crystal glass substrates with high flatness and low defect rates. During the overflow forming process, the pulling edge mechanism, as a core component, is responsible for precisely controlling the flow and distribution of the glass melt in the forming tank, and plays a decisive role in the quality of the final product.

[0003] However, there are some significant limitations in the design of the existing pulling edge mechanisms, especially in terms of safety and reliability when dealing with emergencies. Specifically, the pulling edge mechanism is usually equipped with a motor drive system to achieve precise control of the pulling edge action. However, during the actual production process, the motor may suddenly stop due to various unforeseen factors (such as power fluctuations, mechanical failures, etc.). If the motor fails to disengage from the transmission system in time, it will cause the pulling edge mechanism to remain in a locked or semi-locked state, thereby causing uncontrollable interference to the flow of the glass melt, and even leading to serious consequences such as glass substrate cracking and equipment damage, greatly increasing the process risk.

[0004] In addition, since the pulling edge mechanism is often installed in a high-temperature environment, the long-term high-temperature exposure poses a severe challenge to the performance of electrical components. Problems such as accelerated aging and decreased insulation performance of electrical components at high temperatures not only lead to unstable working conditions, but may also cause electrical failures such as short circuits and open circuits, further reducing the reliability of the pulling edge mechanism and the safety of the entire production line.

[0005] More importantly, most of the current market pulling edge mechanisms lack an automatic disengagement mechanism. In the event of a sudden motor shutdown or other emergencies, manual intervention is required to disengage the mechanism, which not only has a slow response speed, but also increases the labor intensity and safety risks of the operators. Especially in harsh environments such as high temperature, high humidity, and high dust, manual operation is even more difficult and extremely prone to secondary accidents.

[0006] In summary, the safety and reliability of the existing pulling edge mechanisms in dealing with emergencies are insufficient, which has become a key factor restricting the stability of the liquid crystal glass substrate forming process and the improvement of production efficiency. Therefore, developing a new type of pulling edge mechanism that can automatically disengage in case of emergencies and can adapt to high-temperature environments is of great significance for improving the production efficiency and product quality of the liquid crystal display industry. Summary of the Utility Model

[0007] In view of the deficiencies of the prior art, the utility model provides a pulling edge mechanism that automatically disengages when the motor stops rotating, solving the problems raised in the above-mentioned background art.

[0008] To achieve the above objectives, the utility model is realized through the following technical solutions: A pulling edge mechanism that automatically disengages when the motor stops rotating, comprising:

[0009] Bearing seats, and two bearing seats are provided in total;

[0010] Pulling edge shafts, and the pulling edge shafts are rotatably connected inside the bearing seats;

[0011] Springs, and the springs are abutted and arranged between the two bearing seats;

[0012] A driving module, which can not only drive the pulling edge shafts to rotate towards each other, but also make the two pulling edge shafts and bearing seats approach synchronously, squeeze the springs, and after the driving module stops driving, the springs will immediately push the two pulling edge shafts and bearing seats away synchronously.

[0013] Further, limit posts are connected to adjacent ends of the bearing seats, and the springs are sleeved outside the limit posts.

[0014] Further, linear guide rails are slidably connected to the upper parts of the bearing seats.

[0015] Further, the driving module includes a driving motor, a gear is installed at the driving end of the driving motor, and the gear is fixedly connected to the pulling edge shaft.

[0016] Further, the driving module further includes a rack, and the rack meshes with the gear.

[0017] Further, the springs are symmetrically arranged between the two bearing seats, and the bearing seats are balanced in force during movement.

[0018] Further, the torque generated by the driving motor needs to be greater than the load borne by the springs.

[0019] The utility model provides a pulling edge mechanism that automatically disengages when the motor stops rotating. Compared with the prior art, it has the following beneficial effects:

[0020] This pulling edge mechanism that automatically disengages when the motor stops rotating, through a pure mechanical structure, can realize the function of automatically disengaging the pulling edge shafts in the case of sudden shutdown of the motor, thereby ensuring the safety and stability of the liquid crystal glass substrate forming process. Compared with the existing method that can only rely on manual disengagement by workers in case of emergency, the safety performance is greatly improved and there is no process risk. Description of the Drawings

[0021] Figure 1 Is the split schematic diagram of the utility model;

[0022] Figure 2 is an assembly schematic diagram of the present utility model;

[0023] Figure 3 is a structural schematic diagram of a spring disposed between the bearing seats of the present utility model;

[0024] Figure 4 is a structural schematic diagram of the first drive module in the present utility model.

[0025] In the figure: 1, the first bearing seat; 2, the second bearing seat; 3, the first edge-pulling shaft; 4, the second edge-pulling shaft; 5, the spring; 6, the first drive module; 61, the drive motor; 62, the gear; 63, the rack; 7, the second drive module; 8, the linear guide rail; 9, the limit post. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-4, the present utility model provides a technical solution: a pulling edge mechanism that automatically disengages when the motor stops rotating, mainly composed of a first bearing block 1, a second bearing block 2, a first pulling edge shaft 3, a second pulling edge shaft 4, a spring 5, a first driving module 6, and a second driving module 7. Among them, the first pulling edge shaft 3 and the second pulling edge shaft 4 rotate inside the first bearing block 1 and the second bearing block 2 respectively. There are two springs 5 in total, and they are symmetrically abutted between the first bearing block 1 and the second bearing block 2. The first driving module 6 and the second driving module 7 have the same structure, and both include a driving motor 61, a gear 62, and a rack 63. The gear 62 is installed on the driving motor 61, and the gear is fixedly connected to the first pulling edge shaft 3 and the second pulling edge shaft 4. The gear 62 meshes with the rack 63. During use, the two driving motors 61 (both driving motors 61 are servo motors) rotate in opposite directions, thereby driving the two gears 62 and the first pulling edge shaft 3 and the second pulling edge shaft 4 to rotate in opposite directions. Since both gears 62 mesh with the rack 63 (the rack 63 is fixed on the support surface and does not move), when the gear 62 rotates, the whole of the first bearing block 1, the first pulling edge shaft 3, and the first driving module 6 will approach the whole of the second bearing block 2, the second pulling edge shaft 4, and the second driving module 7. During the approaching process, the two springs 5 are compressed and contracted until the gear 62 moves to the end of the rack 63. At this time, the gear 62, due to being driven by the servo motor 61, still remains rotating and drives the first pulling edge shaft 3 and the second pulling edge shaft 4 to rotate. However, the above two wholes no longer approach because after the gear 62 rolls to the end of the tooth 63, they no longer mesh, but the gear 62 continues to rotate at the end (which can be understood as a slipping state). Once the two driving motors 61 stop driving, that is, the gear 62 stops rotating, the previously compressed spring 5 will immediately push the first bearing block 1 and the second bearing block 2 apart, the gear 62 resets on the rack 63, and the first pulling edge shaft 3 and the second pulling edge shaft 4 will also disengage synchronously.

[0028] In addition, in order to cooperate with the movement of the first bearing block 1 and the second bearing block 2, linear guides 8 are connected to the upper parts of the first bearing block 1 and the second bearing block 2. The linear guides 8 are installed on the support surface. And in order to prevent the spring 5 from disengaging from the first bearing block 1 and the second bearing block 2 when being compressed, limit posts 9 are connected to the adjacent end faces of the first bearing block 1 and the second bearing block 2, and the spring 5 is sleeved on the limit posts 9.

[0029] In summary, the technical solution of this embodiment is actually that through a set of servo motors rotating in opposite directions relative to each other, while driving the opposite rotation of the edge rollers, under the action of the fixed rack below and the gear on the motor drive shaft, the two edge rollers are clamped towards the center to form a clamping force (the corresponding clamping force can be ensured by adjusting the frequency of the fixed servo motor and the mechanical load of the spring, and the clamping force of the edge roller is the torque of the servo motor minus the spring load). When the motor suddenly stops rotating, the clamping force disappears, and the two edge rollers separate under the action of the spring between the bearing seats to ensure the safety and stability of the process.

Claims

1. A pull edge mechanism that automatically disengages when the motor stops, characterized in that: include: Bearing seats, of which two are provided; A side-pulling shaft, the side-pulling shaft is rotatably connected to the inside of the bearing seat; A spring, the spring being disposed between the two bearing seats; The driving module can not only drive the side-pulling shafts to rotate towards each other, but also allow the two side-pulling shafts and the bearing seat to approach each other synchronously and squeeze the spring. After the driving module stops driving, the spring will immediately push the two side-pulling shafts and the bearing seat apart synchronously.

2. A side-pulling mechanism that automatically disengages when the motor stops according to claim 1, characterized in that: The adjacent ends of the bearing seat are connected to the limiting columns, and the spring sleeve is arranged outside the limiting columns.

3. The side-pulling mechanism that automatically disengages when the motor stops according to claim 1, characterized in that: The upper part of the bearing seat is slidably connected with a linear guide rail.

4. The side-pulling mechanism that automatically disengages when the motor stops according to claim 1, characterized in that: The driving module comprises a driving motor, a driving end of the driving motor is provided with a gear, and the gear is fixedly connected to the edge drawing shaft.

5. The side-pulling mechanism that automatically disengages when the motor stops according to claim 4, characterized in that: The driving module also includes a rack which is meshed with the gear.

6. The side-pulling mechanism that automatically disengages when the motor stops according to claim 1, characterized in that: The spring is symmetrically arranged between the two bearing seats, and the forces on the bearing seats are balanced when they move.

7. The side-pulling mechanism that automatically disengages when the motor stops according to claim 4, characterized in that: The torque generated by the drive motor needs to be greater than the load borne by the spring.

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