A high-load rotating device and a method for calculating its size

Abstract

The present invention relates to the field of mechanical structure technology, and in particular to a high-load rotating device, which includes a support plate, a platform, a rotating support mechanism and a positioning rotating mechanism. Among them, the platform is spaced apart from the support plate, and a positioning hole is provided on the platform. The rotating support mechanism is arranged on the support plate, and the rotating support mechanism can support the platform and enable the platform to be rotatably arranged relative to the support plate. The positioning rotating mechanism is arranged on the support plate, and the positioning rotating mechanism includes a connecting rod, a first driving assembly and a second driving assembly. The first driving assembly can drive the connecting rod to move in a first direction relative to the support plate, and the second driving assembly can drive the connecting rod to move in a second direction relative to the support plate, so that the connecting rod moves along an arc around the axis of the rotation center of the rotating support mechanism. The first direction and the second direction are both parallel to the plane where the platform is located, and the connecting rod is partially inserted in the positioning hole. The present invention also provides a size calculation method for the above-mentioned high-load rotating device.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical structures, and in particular to a high-load rotating device and a method for calculating its size. Background Art

[0002] A polarizer attaching machine is a device that attaches polarizers to the front and back sides of a formed liquid crystal glass substrate. The polarizer attaching machine is provided with a high-load alignment rotating shaft, which has a small rotation angle and high precision requirements. Existing polarizer attaching machines mostly use direct drive motors to drive the rotation of the high-load alignment rotating shaft. Since the rotational load of the high-load alignment rotating shaft is high, the direct drive motor needs to have higher torque and inertia, which increases the cost of the direct drive motor accordingly. In addition, the direct drive motor has a large axial height and occupies a large space, which will cause other structures in the polarizer attaching machine to be arranged tightly and connected irrationally.

[0003] Therefore, there is an urgent need for a high-load rotating device and a size calculation method thereof to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a high-load rotating device that can be suitable for high-load scenarios and can also reduce costs, reduce space occupancy, and reduce the overall size of the product.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A high-load rotating equipment, comprising:

[0007] Support plate;

[0008] A carrier, the carrier is spaced apart from the support plate, and a positioning hole is provided on the carrier;

[0009] A rotation support mechanism, the rotation support mechanism is arranged on the support plate, the rotation support mechanism can support the carrier and enable the carrier to be rotatable relative to the support plate;

[0010] A positioning and rotating mechanism, wherein the positioning and rotating mechanism is arranged on the support plate, and the positioning and rotating mechanism includes a connecting rod, a first driving component and a second driving component, wherein the first driving component can drive the connecting rod to move along the first direction relative to the support plate, and the second driving component can drive the connecting rod to move along the second direction relative to the support plate, so that the connecting rod moves along an arc around the axis of the rotation center of the rotating support mechanism, the first direction and the second direction are both parallel to the plane where the carrier is located, and the connecting rod is partially inserted in the positioning hole.

[0011] Optionally, the first driving assembly includes a first slider and a first guide rail arranged along the first direction, the first slider is movably arranged on the first guide rail, and the second driving assembly is connected to the first slider.

[0012] Optionally, the first driving assembly further includes a first driving member, and the first driving member is used to drive the first sliding block to slide on the first guide rail.

[0013] Optionally, the second driving assembly includes a second slider and a second guide rail arranged along the second direction, the second guide rail includes a mover and a stator that are slidably matched, the second slider is connected to the mover, and the connecting rod is arranged on the second slider.

[0014] Optionally, two second guide rails are arranged opposite to each other.

[0015] Optionally, the second driving assembly further includes a second driving member, and the second driving member is used to drive the mover to slide on the stator.

[0016] Optionally, the second guide rail is a cross roller guide rail.

[0017] Optionally, the rotating support mechanism includes a support bearing, the outer ring of the support bearing supports the carrier, the inner ring of the support bearing is connected to the support plate, or the inner ring of the support bearing supports the carrier, and the outer ring of the support bearing is connected to the support plate.

[0018] Optionally, the support bearing is a crossed roller bearing.

[0019] Another object of the present invention is to provide a method for calculating the dimensions of a high-load rotating device, which can meet the accuracy requirements for the rotation angle of the carrier, while ensuring that the rotation angle of the carrier can reach the maximum value of the required rotation angle.

[0020] To achieve this object, the present invention adopts the following technical solutions:

[0021] A method for calculating the size of a high-load rotating device, applied to the above-mentioned high-load rotating device, comprises the following steps:

[0022] The first driving assembly drives the connecting rod to move in the first direction with a displacement accuracy of L1 and a maximum displacement of L2. The second driving assembly drives the connecting rod to move in the second direction with a displacement accuracy of W1 and a maximum displacement of W2. The first direction is perpendicular to the second direction. The angular accuracy of the connecting rod relative to the rotation center of the rotating support mechanism is θ1, and the absolute value of the maximum value is θ2. Then, the value of the distance R between the connecting rod and the rotation center satisfies the following conditions:

[0023]

[0024] Beneficial effects of the present invention:

[0025] The present invention provides a high-load rotating device, including a support plate, a carrier, a rotating support mechanism and a positioning rotating mechanism. The carrier is spaced apart from the support plate, and a positioning hole is provided on the carrier. The rotating support mechanism is provided on the support plate, and the rotating support mechanism can support the carrier and enable the carrier to be rotatably provided relative to the support plate. The positioning rotating mechanism is provided on the support plate, and the positioning rotating mechanism includes a connecting rod, a first driving assembly and a second driving assembly. The first driving assembly can drive the connecting rod to move in a first direction relative to the support plate, and the second driving assembly can drive the connecting rod to move in a second direction relative to the support plate, so that the connecting rod moves along an arc around the axis of the rotation center of the rotating support mechanism, and the first direction and the second direction are both parallel to the plane where the carrier is located, and the connecting rod is partially inserted in the positioning hole.

[0026] It is known that the rotating support mechanism is used to support the carrier and the high load on the carrier, and the connecting rod is used to drive the carrier to rotate. The rotation center of the rotating support mechanism corresponds to the position on the carrier, and the distance between the positioning hole on the carrier is fixed. The connecting rod is driven to move in the first direction by the first drive component, and the connecting rod is driven to move in the second direction by the second drive component, so that the connecting rod moves along an arc around the axis of the rotation center, which converts the rotational motion into the superposition of two linear motions to realize the rotation of the carrier. Since the rotating support mechanism and the positioning rotating mechanism respectively play the role of supporting weight and driving rotation, they can replace the direct drive motor, which is not only suitable for high-load scenarios, but also can reduce costs and space occupancy, reduce the overall size of the product, and improve the economic benefits of the product.

[0027] The present invention also provides a method for calculating the size of the above-mentioned high-load rotating device, that is, the displacement accuracy L1 and the maximum displacement L2 of the connecting rod driven by the first driving component to move along the first direction, the displacement accuracy W1 and the maximum displacement W2 of the connecting rod driven by the second driving component to move along the second direction, the angular accuracy θ1 and the absolute value θ2 of the maximum value of the displacement of the connecting rod relative to the rotation center of the rotating support mechanism, and the value conditions of the distance R between the connecting rod and the rotation center can be obtained. The high-load rotating device designed according to the value conditions can meet the accuracy requirements for the rotation angle of the platform, and at the same time ensure that the rotation angle of the platform can reach the maximum value of the required rotation angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the internal structure of a high-load rotating device provided by an embodiment of the present invention from a first perspective;

[0029] Figure 2It is a schematic diagram of the internal structure of the high-load rotating device provided by an embodiment of the present invention from a second perspective.

[0030] In the figure:

[0031] 1. Support plate; 2. Support bearing; 3. Connecting rod; 4. First guide rail; 5. First slider; 6. Second guide rail; 7. Second slider. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and implementation methods. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] Most existing polarizer attaching machines use direct drive motors to drive the rotation of high-load alignment rotating shafts. Since the rotational load of the high-load alignment rotating shaft is high, the direct drive motor needs to have higher torque and inertia, which increases the cost of the direct drive motor accordingly. In addition, the direct drive motor has a large axial height and occupies a large space, which will cause other structures in the polarizer attaching machine to be arranged tightly and connected irrationally. Therefore, this embodiment provides a high-load rotating device, which can be used in the polarizer attaching machine to solve the above problems.

[0036] like Figure 1-Figure 2As shown, the high-load rotating device includes: a support plate 1, a carrier (not shown in the figure), a rotating support mechanism and a positioning rotating mechanism. Among them, the carrier is spaced apart from the support plate 1, and a positioning hole is provided on the carrier. The rotating support mechanism is arranged on the support plate 1, and the rotating support mechanism can support the carrier and make the carrier rotate relative to the support plate 1. The positioning rotating mechanism is arranged on the support plate 1, and the positioning rotating mechanism includes a connecting rod 3, a first driving assembly and a second driving assembly. The first driving assembly can drive the connecting rod 3 to move in a first direction relative to the support plate 1, and the second driving assembly can drive the connecting rod 3 to move in a second direction relative to the support plate 1, so that the connecting rod 3 moves along an arc around the axis of the rotation center of the rotating support mechanism. The first direction and the second direction are both parallel to the plane where the carrier is located, and the connecting rod 3 is partially inserted in the positioning hole.

[0037] It is known that the rotating support mechanism is used to support the platform and the high load on the platform, and the connecting rod 3 is used to drive the platform to rotate. The rotation center of the rotating support mechanism corresponds to the position on the platform, and the distance between the positioning hole on the platform is fixed. The connecting rod 3 is driven to move in the first direction by the first driving component, and the connecting rod 3 is driven to move in the second direction by the second driving component, so that the connecting rod 3 moves along the arc around the axis of the rotation center, and the rotation of the platform is realized by superposition of the two linear directions of motion. Since the rotating support mechanism and the positioning rotating mechanism respectively play the role of supporting weight and driving rotation, they can replace the direct drive motor, which is not only suitable for high-load scenarios, but also can reduce costs and space occupancy, reduce the overall size of the product, and improve the economic benefits of the product.

[0038] Optionally, in this embodiment, the first direction is a tangent direction of a circle with the rotation center of the rotation support mechanism as the center, and the second direction is perpendicular to the first direction.

[0039] Optionally, the first driving assembly includes a first slider 5 and a first guide rail 4 arranged along the first direction, the first slider 5 is movably arranged on the first guide rail 4, and the second driving assembly is connected to the first slider 5. Optionally, the first driving assembly also includes a first driving member to drive the first slider 5 to slide on the first guide rail 4. In order to ensure that the moving distance of the connecting rod 3 along the first direction meets the accuracy requirement, optionally, the first driving member is a servo motor.

[0040] In order to ensure that the moving distance of the connecting rod 3 along the second direction meets the accuracy requirements, optionally, the second driving assembly includes a second slider 7 and a second guide rail 6 arranged along the second direction. The second guide rail 6 includes a mover and a stator that are slidably matched, the second slider 7 is connected to the mover, and the connecting rod 3 is arranged on the second slider 7. Since the moving distance of the connecting rod 3 along the second direction is small when it moves in an arc around the axis of the rotation center, in order to ensure the movement accuracy, optionally, the second guide rail 6 is a cross roller guide rail. And in order to ensure the stability of movement, optionally, two second guide rails 6 are relatively arranged. Optionally, the movers of the two second guide rails 6 are respectively fixedly connected to the bottom of the second slider 7, so that when the two movers move in coordination, the second slider 7 moves stably.

[0041] In order to protect the second guide rail 6, optionally, a bearing plate is fixedly connected to the first slider 5, and a groove is formed on the bearing plate. The stators of the two second guide rails 6 are relatively arranged at the side walls of the two grooves to ensure that the movers of the second guide rails 6 move in the grooves. It is known that the length of the groove needs to meet the moving distance of the connecting rod 3 in the second direction.

[0042] Optionally, the second drive assembly further comprises a second drive member to drive the mover to slide relative to the stator. In order to ensure that the moving distance of the connecting rod 3 along the second direction meets the accuracy requirement, optionally, the second drive member is an electric cylinder or a pneumatic cylinder.

[0043] In order to further improve the stability of the rotation of the carrier driven by the connecting rod 3, optionally, the high-load rotating equipment is provided with multiple positioning rotation mechanisms, that is, multiple sets of connecting rods 3 and driving units are provided, and multiple positioning holes are provided on the carrier. The multiple connecting rods 3 and the multiple positioning holes are arranged in a one-to-one correspondence, so that multiple points on the carrier can be driven to rotate at the same time, thereby ensuring the stability of the rotation of the carrier.

[0044] Optionally, the rotation support mechanism includes a support bearing, the outer ring of the support bearing supports the carrier, and the inner ring of the support bearing is connected to the support plate 1, or the inner ring of the support bearing supports the carrier, and the outer ring of the support bearing is connected to the support plate 1. To ensure the bearing capacity of the bearing, the support bearing is optionally a cross roller bearing.

[0045] Optionally, two supporting plates are vertically arranged opposite to each other on the supporting plate 1, and a load-bearing plate is mounted on the two supporting plates, and a through hole is opened on the load-bearing plate, and the supporting bearing is arranged in the through hole. That is, the outer wall of the outer ring of the supporting bearing is fixedly connected to the inner wall of the through hole, and the inner ring of the supporting bearing is fixedly connected to the carrier, so as to realize the stable rotation of the carrier relative to the supporting plate 1.

[0046] like Figure 2As shown, this embodiment also provides a method for calculating the size of the above-mentioned high-load rotating equipment. The displacement of the connecting rod 3 driven by the first driving component to move along the first direction is L, the displacement of the connecting rod 3 driven by the second driving component to move along the second direction is W, and the angular accuracy of the connecting rod 3 relative to the rotation center of the rotating support mechanism is θ.

[0047] The displacement accuracy of the first driving component driving the connecting rod 3 to move in the first direction is set to L1, and the maximum displacement is set to L2. The displacement accuracy of the second driving component driving the connecting rod 3 to move in the second direction is set to W1, and the maximum displacement is set to W2. The angular accuracy of the displacement of the connecting rod 3 relative to the rotation center of the rotation support mechanism is set to θ1, and the absolute value of the maximum value is set to θ2.

[0048] It can be seen that the absolute value of the difference between the actual value and the set value of the angle of the connecting rod 3 relative to the rotation center of the rotating support mechanism, that is, the absolute value of the deviation angle, needs to be less than or equal to the accuracy value θ1 to meet the rotation accuracy requirements. Since the first direction is perpendicular to the second direction, when the displacement accuracy value L1 of the connecting rod 3 moving along the first direction is fixed, the smaller the distance R between the connecting rod 3 and the rotation center, the larger the deviation angle. Since the deviation angle has an allowable maximum value, that is, the distance R between the connecting rod 3 and the rotation center has an allowable minimum value, that is,

[0049] Similarly, when the displacement accuracy value W1 of the connecting rod 3 moving along the second direction is fixed, the smaller the distance R between the connecting rod 3 and the rotation center, the larger the deviation angle. Since the deviation angle has an allowable maximum value, that is, the distance R between the connecting rod 3 and the rotation center has an allowable minimum value, that is, Therefore, R needs to be greater than or equal to and The larger value in .

[0050] In addition, the maximum value of the actual value of the angle of the connecting rod 3 relative to the rotation center of the rotation support mechanism needs to be greater than or equal to the absolute value θ2 of the preset maximum value in order to meet the needs of the stage rotation. When the maximum displacement L2 of the connecting rod 3 moving along the first direction is fixed, the smaller the distance R between the connecting rod 3 and the rotation center, the greater the angle of the connecting rod 3 relative to the rotation center. Since the maximum value of the offset angle needs to be greater than or equal to the absolute value θ2 of the preset maximum value, that is, the distance R between the connecting rod 3 and the rotation center has an allowable maximum value, that is,

[0051] Similarly, when the maximum displacement W2 of the connecting rod 3 moving along the second direction is fixed, the smaller the distance R between the connecting rod 3 and the rotation center, the greater the angle of the connecting rod 3 relative to the rotation center. Since the maximum value of the offset angle needs to be greater than or equal to the absolute value θ2 of the preset maximum value, that is, the distance R between the connecting rod 3 and the rotation center has an allowable maximum value, that is, Therefore, R needs to be less than or equal to and The smaller value in .

[0052] In summary, the distance R between the connecting rod 3 and the rotation center needs to meet the following conditions:

[0053]

[0054] The high-load rotating equipment designed according to the value condition can meet the accuracy requirements for the rotation angle of the carrier, while ensuring that the rotation angle of the carrier can reach the maximum value of the required rotation angle.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A high-load rotating device, characterized in that: include: Support plate (1); A carrier, the carrier is spaced apart from the support plate (1), and a positioning hole is provided on the carrier; A rotating support mechanism, the rotating support mechanism being arranged on the supporting plate (1), the rotating support mechanism being capable of supporting the carrier and enabling the carrier to be rotatably arranged relative to the supporting plate (1); A positioning and rotating mechanism, wherein the positioning and rotating mechanism is arranged on the support plate (1), and the positioning and rotating mechanism comprises a connecting rod (3), a first driving assembly and a second driving assembly, wherein the first driving assembly can drive the connecting rod (3) to move relative to the support plate (1) along a first direction, and the second driving assembly can drive the connecting rod (3) to move relative to the support plate (1) along a second direction, so that the connecting rod (3) moves along an arc around the axis of the rotation center of the rotating support mechanism, wherein the first direction is a tangent direction of a circle with the rotation center of the rotating support mechanism as the center, and the second direction is perpendicular to the first direction, and both the first direction and the second direction are parallel to the plane where the carrier is located, and the connecting rod (3) is partially inserted into the positioning hole; The first driving assembly comprises a first slider (5) and a first guide rail (4) arranged along the first direction, the first slider (5) is movably arranged on the first guide rail (4), and the second driving assembly is connected to the first slider (5); The second driving assembly comprises a second slider (7) and a second guide rail (6) arranged along the second direction, the second guide rail (6) comprises a mover and a stator that are slidably matched, the second slider (7) is connected to the mover, and the connecting rod (3) is arranged on the second slider (7).

2. The high-load rotating equipment according to claim 1, characterized in that: The first driving assembly further comprises a first driving member, and the first driving member is used to drive the first sliding block (5) to slide on the first guide rail (4).

3. The high-load rotating equipment according to claim 1, characterized in that: Two second guide rails (6) are arranged opposite to each other.

4. The high-load rotating equipment according to claim 1, characterized in that: The second driving assembly further includes a second driving member, and the second driving member is used for driving the mover to slide on the stator.

5. The high-load rotating equipment according to claim 1, characterized in that: The second guide rail (6) is a cross roller guide rail.

6. The high-load rotating equipment according to claim 1, characterized in that: The rotating support mechanism comprises a support bearing, the outer ring of the support bearing supports the carrier, the inner ring of the support bearing is connected to the support plate (1), or the inner ring of the support bearing supports the carrier, the outer ring of the support bearing is connected to the support plate (1).

7. The high-load rotating equipment according to claim 6, characterized in that: The support bearing is a crossed roller bearing.

8. A method for calculating the size of a high-load rotating device, characterized in that: The method is applied to the high-load rotating equipment according to any one of claims 1 to 7, comprising the following steps: The first driving component drives the connecting rod (3) to move along the first direction with a displacement accuracy of L1 and a maximum displacement of L2. The second driving component drives the connecting rod (3) to move along the second direction with a displacement accuracy of W1 and a maximum displacement of W2. The first direction is perpendicular to the second direction. The angular accuracy of the connecting rod (3) relative to the rotation center of the rotation support mechanism is θ1, and the absolute value of the maximum value is θ2. Then, the value of the distance R between the connecting rod (3) and the rotation center satisfies the following conditions:

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