Backrest wheel automatic correction device and method in overflow down-draw method transverse cutting process

Abstract

The invention discloses an automatic correction device and method for a back wheel in an overflow down-draw method transverse cutting procedure, and belongs to the field of overflow down-draw method plate glass manufacturing, the device comprises a screw rod motor, a distance measuring mechanism, the back wheel, a back wheel carrier cylinder and a locking nut; the lead screw motor is installed at one end of the back wheel and used for controlling local displacement of the back wheel. The distance measuring mechanism is installed at the other end of the back wheel and used for measuring the distance between the back wheel and the glass substrate in real time. The backrest wheel frame air cylinder is installed on the side face of the backrest wheel, and the locking nuts are installed on the two sides of the backrest wheel and used for adjusting the angle of the backrest wheel. According to the invention, the problem that the position of the back wheel deviates in the process of producing the substrate glass by the overflow down-drawing method can be solved.

Description

Technical Field

[0001] This invention belongs to the field of overflow-draw flat glass manufacturing, specifically relating to an automatic back-mounted wheel correction device and method in the cross-cutting process of overflow-draw method. Background Technology

[0002] In the production system of substrate glass produced by the overflow down-draw method, production continuity is crucial. During the cross-cutting process, issues such as poor cutting, incorrect bending, and poor suction cup adhesion leading to breakage of the sub-plate, mother plate, or broken plates at the junction will all affect production stability. As the glass mother plate flows out of the annealing furnace, a series of losses are prone to occur during the cross-cutting process. Often, improper positioning of the back rollers during cross-cutting can prevent them from properly contacting and excessively compressing the glass substrate, leading to vacuum failure of the bending robot's suction cups or breakage of the glass during bending and at the junction. Furthermore, the pressure exerted by the glass substrate on the back rollers can easily damage the back roller assembly, ultimately affecting production. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic correction device and method for the back roller in the overflow pull-down cross-cutting process, so as to solve the problem of back roller position displacement in the process of producing substrate glass by overflow pull-down method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: In the first aspect, an automatic correction device for the back wheel in the cross-cutting process of overflow pull-down method includes: a lead screw motor, a distance measuring mechanism, a back wheel, a back wheel frame cylinder, and a locking nut; A lead screw motor is installed at one end of the backrest wheel to control the local displacement of the backrest wheel; a distance measuring mechanism is installed at the other end of the backrest wheel to measure the distance between the backrest wheel and the glass substrate in real time; a backrest wheel frame cylinder is installed on the side of the backrest wheel, and locking nuts are installed on both sides of the backrest wheel to adjust the angle of the backrest wheel.

[0005] In some implementations, the lead screw motor is connected to the backing wheel via a lead screw.

[0006] In some implementations, the lead screw is located in the middle of the lead screw motor.

[0007] In some embodiments, a steel plate is also included, and a lead screw and a lead screw motor are mounted on the steel plate. When the lead screw motor is started, the lead screw drives the steel plate to achieve a slight adjustment of the back wheel.

[0008] In some embodiments, the ranging mechanism consists of an infrared ranging sensor and a protective steel cover. The infrared ranging sensor is used to measure the distance between the back wheel and the glass substrate, and the protective steel cover is installed outside the infrared ranging sensor.

[0009] In some embodiments, the back wheel is disposed on one side of the steel plate, and the back wheel frame cylinder is disposed on the other side of the steel plate.

[0010] In some embodiments, the steel plate is provided with a plurality of back-mounted wheels, and the spacing between adjacent back-mounted wheels is the same.

[0011] In some implementations, a ranging mechanism is installed on each back wheel.

[0012] In some implementations, the number of lead screw motors is the same as the number of back rollers.

[0013] Secondly, a correction method for an automatic correction device for back-side rollers in an overflow-pull-down cross-cutting process includes the following steps: Adjust the backrest wheels to the appropriate angle by adjusting the locking nuts on both sides of the backrest wheels; Before the plate-breaking robot starts breaking the plate, the back wheel frame cylinder drives the back wheel to approach the glass substrate. During the cross-cutting and plate-breaking processes, the distance between the back roller and the glass substrate is measured in real time by the distance measuring mechanism, and the data is fed back to the control system. The control system determines whether the distance between the backrest wheel and the glass substrate needs to be adjusted based on a preset distance range. When the distance is less than the preset minimum value, the lead screw motor starts, causing the backrest wheel to move away from the glass substrate until the distance reaches the preset distance range. When the distance is greater than the preset maximum value, the lead screw motor starts, causing the backrest wheel to move closer to the glass substrate until the distance reaches the preset distance range.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an automatic correction device for the back-support wheel in the overflow pull-down cross-cutting process. A lead screw motor is installed at one end of the back-support wheel, a distance measuring mechanism is installed at the other end, a back-support wheel frame cylinder is installed on the side of the back-support wheel, and locking nuts are installed on both sides of the back-support wheel. After adjustment, the locking nuts ensure that the back-support wheel is in a stable supporting position for the glass substrate during the glass substrate breaking process by the breaking robot, ensuring support stability. The lead screw motor can adjust the local displacement of the back-support wheel, solving the problem of excessive distance difference between the glass substrate and the suction cup of the breaking robot, and avoiding suction failure due to back-support wheel positioning issues. The lead screw motor ensures that the back-support wheel exerts only a supporting force and no compressive force on the glass substrate, reducing breaking losses during the breaking robot process. The distance measuring mechanism measures the distance between the back-support wheel and the glass substrate in real time and transmits the measurement data to the control system in real time. Furthermore, the lead screw is located in the middle of the lead screw motor, and the symmetrical layout makes the force transmission more even and avoids mechanical vibration or bearing wear caused by eccentricity.

[0015] Furthermore, the steel plate, as a supporting base, can enhance the structural rigidity and prevent local deformation; the back wheel can be slightly adjusted by moving the steel plate as a whole.

[0016] Furthermore, the ranging mechanism consists of an infrared ranging sensor and a protective steel cover, wherein the protective steel cover can reduce the damage to the infrared ranging sensor caused by the fragmentation phenomenon due to transverse loss.

[0017] Furthermore, the backrest wheel and the backrest wheel frame cylinder are placed on opposite sides of the steel plate. The backrest wheel frame cylinder can significantly adjust the position of the backrest wheel, while the lead screw motor can finely adjust the position of the backrest wheel. Attached Figure Description

[0018] Figure 1 An automatic correction device for back-side rollers in the cross-cutting process of overflow pull-down method is provided in an embodiment of the present invention.

[0019] In the diagram, 1 is the lead screw; 2 is the lead screw motor; 3 is the infrared ranging sensor; 4 is the protective steel cover; 5 is the back wheel; and 6 is the back wheel frame cylinder. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. The described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and descriptions are considered to be exemplary in nature and not restrictive.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] In the production system for substrate glass using the overflow pull method, problems such as poor cutting, poor board breaking, and poor suction cup adsorption during the cross-cutting process can cause issues like breakage of the daughter board, mother board, and broken boards at the junction, affecting production stability. Improper positioning of the back rollers can cause them to fail to closely contact or excessively compress the glass substrate during the cross-cutting process, leading to problems such as failure to establish vacuum in the board breaking robot's suction cups, board breakage by the board breaking robot, and board breakage at the junction. Furthermore, the pressure exerted by the glass substrate on the back rollers can easily damage the back roller assembly, resulting in production losses.

[0026] Therefore, as Figure 1 As shown, this embodiment provides an automatic correction device for the back wheel in the overflow pull-down cross-cutting process, including a lead screw 1, a lead screw motor 2, an infrared distance sensor 3, a protective steel cover 4, a back wheel 5, a back wheel frame cylinder 6, and a locking nut 7.

[0027] The lead screw motor 2 is installed at the lower end of the backrest wheel 5, and the lead screw 1 is located in the middle of the lead screw motor 2 mechanism. The lead screw 1 drives the steel plate connected to the lead screw 1 and the backrest wheel 5 to achieve the function of micro-adjustment of the backrest wheel 5. The infrared ranging sensor 3 is installed on the upper part of the backrest wheel 5, and the protective steel cover 4 of the infrared ranging sensor is installed on the outside of the infrared ranging sensor 3. The backrest wheel frame cylinder 6 is installed on the side of the backrest wheel 5, and the locking nut 7 is installed on both sides of the backrest wheel 5.

[0028] During operation, the lead screw motor 2 first controls the local displacement of the backing wheel 5, thereby controlling the support range of the backing wheel 5 on the glass substrate during the breaking process. The lead screw motor 2 is located below the backing wheel 5, solving the problem of the backing wheel 5 being too close to the glass substrate during the breaking process. This ensures that the backing wheel 5 exerts only a supporting force without compressing force on the glass substrate, reducing breaking losses. Adjusting the local displacement of the backing wheel 5 with the lead screw motor 2 also solves the problem of excessive distance difference between the glass substrate and the robot's suction cup, preventing suction failures due to the position of the backing wheel 5.

[0029] The infrared ranging sensor 3 measures the distance between the back roller 5 and the glass substrate in real time, allowing the back roller 5 to be finely adjusted in position in real time, reducing the pressure of the back roller 5 on the glass substrate or the failure of the suction plate due to improper positioning. The protective steel cover 4 of the infrared ranging sensor can reduce the scratches on the infrared ranging sensor 3 caused by glass shards from the cross-section of the glass, and prevent broken glass from affecting the sensor's lifespan or accuracy.

[0030] A steel plate equipped with a lead screw 1 and a lead screw motor 2, together with the backing wheel 5, forms a backing wheel mechanism. The backing wheel frame cylinder 6 can drive the entire backing wheel mechanism to make large-scale close-to-the-glass substrate movements, providing support to the substrate during the glass substrate breaking process by the glass breaking robot. Locking nuts 7 are installed on both sides of the backing wheel 5. By adjusting the locking nuts 7, the angle of the backing wheel 5 is controlled, ensuring that the backing wheel 5 is in a stable supporting position for the glass substrate during the glass breaking process by the glass breaking robot.

[0031] This embodiment controls the local displacement of the back roller 5 by installing a lead screw motor 2 on the back roller 5, thereby controlling the support range of the back roller on the glass substrate during the breaking process. This ensures that the back roller 5 exerts only a supporting force and no squeezing force on the glass substrate, effectively reducing losses during the breaking process. The lead screw motor 2 adjusts the local displacement of the back roller 5, solving the problem of excessive distance between the glass substrate and the suction cup of the breaking robot, avoiding suction failure caused by improper positioning of the back roller 5. The infrared ranging sensor 3 measures the distance between the back roller 5 and the glass substrate in real time, allowing the back roller 5 to fine-tune its position in real time, reducing suction failure caused by squeezing the glass substrate or misalignment of the back roller 5. The protective steel cover 4 of the infrared ranging sensor can reduce scratches on the infrared ranging sensor 3 caused by glass shards from the broken glass, preventing broken glass from affecting the sensor's lifespan or accuracy. The back roller frame cylinder 6 can drive the entire back roller mechanism to make large-amplitude close-to-the-glass-substrate movements, providing support to the substrate during the breaking process of the breaking robot. Locking nuts 7 are installed on both sides of the backrest wheel 5. The angle of the backrest wheel 5 is controlled by adjusting the locking nuts 7, ensuring that the backrest wheel is in a stable supporting position for the glass substrate during the glass substrate breaking process by the glass breaking robot. The infrared ranging sensor 3 measures the actual position information of the backrest wheel 5 from the glass substrate and sends the position information to the computer for analysis. The computer analyzes the information and feeds back the adjustment amount to the lead screw 1. The lead screw 1 adjusts the local offset of the backrest wheel 5 in real time according to the feedback information to ensure that the backrest wheel 5 is in a suitable position from the glass substrate. The backrest wheel 5 supports the glass substrate and does not squeeze the glass substrate, which could cause the glass breaking robot to break the substrate or break the substrate at the handover point. After adjustment, the infrared ranging sensor 3 feeds back the real-time distance information to the computer to ensure that the backrest wheel 5 can be adjusted in real time. The time taken for the above operation should be guaranteed to be within 2 seconds.

[0032] The automatic back-mounted wheel correction device provided in this embodiment can reduce the board breakage caused by poor back-mounted wheel contact during the cross-cutting process, as well as the cross-cutting loss caused by the lack of vacuum establishment during board breaking by the board breaking robot's suction cup. It prevents cross-cutting loss from damaging the back-mounted wheel, reduces the probability of first-time defective molding, reduces the board breaking loss generated by the board breaking robot during the board breaking process, reduces the damage of the board breakage to the back-mounted wheel, and improves the lifespan of the board breaking robot's suction cup.

[0033] As is known from common technical knowledge, the present invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones; all modifications within the scope of the present invention or equivalent to the scope of the present invention are included in the present invention.

Claims

1. An automatic back-mounted wheel correction device for a cross-cutting process using an overflow pull-down method, characterized in that, include: Screw motor (2), ranging mechanism, back wheel (5), back wheel frame cylinder (6) and locking nut (7); A lead screw motor (2) is installed at one end of the backrest wheel (5) to control the local displacement of the backrest wheel; the distance measuring mechanism is installed at the other end of the backrest wheel (5) to measure the distance between the backrest wheel and the glass substrate in real time; the backrest wheel frame cylinder (6) is installed on the side of the backrest wheel (5), and the locking nut (7) is installed on both sides of the backrest wheel (5) to adjust the angle of the backrest wheel.

2. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 1, characterized in that, The lead screw motor (2) is connected to the back wheel (5) via the lead screw (1).

3. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 2, characterized in that, The lead screw (1) is located in the middle of the lead screw motor (2).

4. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 3, characterized in that, It also includes a steel plate, a lead screw (1) and a lead screw motor (2) set on the steel plate. When the lead screw motor (2) starts, the lead screw (1) drives the steel plate to realize the micro-adjustment of the back wheel (5).

5. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 1, characterized in that, The ranging mechanism consists of an infrared ranging sensor (3) and a protective steel cover (4). The infrared ranging sensor (3) is used to measure the distance between the back wheel (5) and the glass substrate. The protective steel cover (4) is installed outside the infrared ranging sensor (3).

6. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 4, characterized in that, The back wheel (5) is located on one side of the steel plate, and the back wheel frame cylinder (6) is located on the other side of the steel plate.

7. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 4, characterized in that, The steel plate is provided with several back-mounted wheels (5), and the spacing between adjacent back-mounted wheels (5) is the same.

8. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 7, characterized in that, Each back wheel (5) is equipped with a distance measuring mechanism.

9. The automatic back-side wheel correction device in the overflow pull-down cross-cutting process according to claim 7, characterized in that, The number of lead screw motors (2) is the same as the number of back wheels (5).

10. A correction method for an automatic correction device for back-to-back rollers in an overflow-pull-down cross-cutting process, characterized in that, Includes the following steps: Adjust the backrest wheel (5) to a suitable angle by adjusting the locking nuts (7) on both sides of the backrest wheel (5); Before the board-breaking robot starts breaking the board, the back wheel cylinder (6) drives the back wheel (5) to approach the glass substrate. During the cross-cutting and plate-breaking processes, the distance between the back roller (5) and the glass substrate is measured in real time by the distance measuring mechanism, and the data is fed back to the control system. The control system determines whether the distance between the back wheel (5) and the glass substrate needs to be adjusted according to the preset distance range. When the distance is less than the preset minimum value, the screw motor (2) is started, causing the back wheel (5) to move away from the glass substrate until the distance reaches the preset distance range. When the distance is greater than the preset maximum value, the screw motor (2) is started, causing the back wheel (5) to move closer to the glass substrate until the distance reaches the preset distance range.

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