Conductive device and conveying equipment
By designing the conductive device and utilizing the spherical contact surface of elastic elements and wear-resistant metal materials, the problem of poor contact of conductive slip rings in confined spaces and high-speed transmission is solved, achieving a stable conductive path and long service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-10
- Publication Date
- 2026-04-14
AI Technical Summary
The existing conductive slip rings have an excessively large outer diameter, making them unsuitable for narrow installation spaces. They are also prone to wear under high-speed operation, leading to poor contact and failing to meet the high-speed conveying requirements and long-term stable operation requirements of panel production lines.
The device employs a conductive mechanism, including a mating component, a mounting component, a first conductive part, a second conductive part, an elastic component, and a conductive element. The elastic component provides a continuous thrust to ensure that the second conductive part tightly presses against the first conductive part, forming a stable conductive path. The device uses wear-resistant and corrosion-resistant metal materials and a spherical contact surface design to avoid the generation of wear debris and the formation of an insulating layer.
It achieves stable conductivity under conditions of confined installation space and high-speed transmission, avoids poor contact, extends service life, and meets the long-term stable operation requirements of panel production lines.
Smart Images
Figure CN121863146A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of transmission equipment technology, and more particularly to a conductive device and a transmission device. Background Technology
[0002] In the production process of LCD, OLED, and other panel display devices, the drying process is a critical step in ensuring panel quality. During this process, panels are continuously transported within a sealed drying area via high-speed conveyor rollers. The friction between the panel surface and the conveyor rollers, as well as the contact between the panel and the drying air, continuously generate static electricity. This static electricity not only attracts dust particles from the air, causing scratches, spots, and other defects on the panel surface, significantly reducing panel yield, but it can also trigger electrostatic discharge (ESD), instantly damaging the transistors and microcircuits inside the panel, rendering it unusable. Simultaneously, statically charged panels adhere to the surface of the conveyor rollers, causing panel positioning misalignment and conveying jams, affecting the automated flow efficiency of the production line, and even potentially posing a safety hazard by electrocuting operators and maintenance personnel.
[0003] Therefore, the industry generally adopts a solution that combines static eliminators and conductive slip rings. Specifically, the static eliminator is installed above the conveyor path in the drying area to initially neutralize some of the static electricity on the panel surface by releasing ions; the conductive slip ring is fixed to the rotating shaft end of the conveyor roller, and its core structure includes a conductive ring that rotates synchronously with the rotating shaft and a stationary brush. The remaining unneutralized static electricity is transferred to the conveyor roller through the panel, then conducted through the contact between the conductive ring and the brush, and finally discharged through the grounding wire to achieve complete elimination of static electricity; some equipment manufacturers use an alternative solution where copper sheets are in direct contact with the stainless steel rotating shaft due to mismatched sizes of the finished conductive slip rings. This solution utilizes the frictional contact between the copper sheet and the stainless steel shaft during rotation to maintain conductivity, conducting static electricity from the rotating shaft to the copper sheet, and then conducting it to ground through the wire.
[0004] However, as the production capacity of panel production lines increases, the rotation speed of conveyor rollers increases significantly, and the drying area is filled with heating pipes, temperature sensors and other components. The installation space for conductive devices is strictly limited, and they must also meet the requirement of continuous and stable operation for at least one year under full production conditions.
[0005] However, the outer diameter of existing finished conductive slip rings is too large to fit into narrow installation spaces, and the rotation speed is no longer suitable for high-speed operation. In addition, in the alternative solution composed of copper sheets and stainless steel shafts, the copper sheets are relatively soft and are prone to rapid wear under high-speed friction. The wear debris can lead to poor contact. At the same time, in humid environments, insulating patina is easily formed on the surface of the copper sheets, which can eventually cause a break in conductivity.
[0006] Therefore, the above problems urgently need to be solved. Summary of the Invention
[0007] The purpose of this invention is to provide a conductive device and a transmission equipment that can adapt to the installation environment of a small dry area, stably adapt to the high-speed transmission requirements, avoid poor contact caused by the generation of abrasive debris, prevent the formation of an insulating layer in a humid environment, and meet the service life requirements for continuous and stable operation under full production conditions.
[0008] To achieve this objective, the present invention adopts the following technical solution:
[0009] A conductive device includes a mating part, a mounting part, a first conductive part, a second conductive part, an elastic part, and a conductive element, wherein:
[0010] The mating component is used to connect with an external rotating structure and rotates synchronously with the external rotating structure.
[0011] The mounting component is mounted on an external fixed structure, and the mounting component is rotatably engaged with the mating component;
[0012] The first conductive part is disposed on the mating member and moves synchronously with the mating member;
[0013] The second conductive part is slidably disposed on the mounting component;
[0014] The elastic element is disposed on the mounting member and is configured to apply an elastic thrust toward the first conductive part to the second conductive part, so that the second conductive part continuously presses against the first conductive part, and the first conductive part and the second conductive part press against each other to form a conductive path.
[0015] The conductive element is connected to the mounting component to discharge the electrical energy conducted to the mounting component via the first conductive part and the second conductive part.
[0016] Preferably, the first conductive part has an annular contact surface at one end facing the second conductive part, and the second conductive part has a contact surface adapted to the annular contact surface at one end facing the first conductive part. The annular contact surface is coaxial with the rotation axis of the mating part.
[0017] Preferably, the first conductive part is provided in the shape of a hollow cylinder, and the end face of the first conductive part facing the second conductive part forms the annular contact surface;
[0018] The second conductive part is spherically shaped and is adapted to fit the annular contact surface through the spherical surface.
[0019] Preferably, the elastic element is a compression spring, and the end of the compression spring facing the first conductive part has a hollow hole;
[0020] The spherical second conductive part can be partially embedded in the hollow hole.
[0021] Preferably, the mounting component has a sliding groove, the second conductive part is slidably disposed in the sliding groove, the elastic element is disposed in the sliding groove, and the extension and retraction direction of the elastic element is consistent with the sliding direction of the second conductive part.
[0022] Preferably, the conductive device further includes a limiting member detachably connected to the mounting member, the limiting member extending to one end of the sliding groove away from the first conductive part, the limiting member abutting against the elastic member on the side facing the elastic member to axially limit the elastic member.
[0023] Preferably, the limiting member includes a bolt that extends into the sliding groove and is screwed into the sliding groove to abut against the elastic member.
[0024] Preferably, the mating component and the mounting component are rotated together by bearings.
[0025] Preferably, the mating component has an assembly groove on the side facing the mounting component, and the bearing is embedded in the assembly groove;
[0026] The mounting component has a boss on the side facing the mating component, and the boss is adapted to be connected to the inner ring of the bearing.
[0027] A conveying device includes a frame, conveying rollers, and the aforementioned conductive device, wherein:
[0028] The conveyor roller is rotatably mounted on the frame.
[0029] The conductive device is disposed between the frame and the conveyor roller, and the conductive device is configured to discharge static electricity generated during the operation of the conveyor roller.
[0030] The beneficial effects of this invention are:
[0031] The conductive device provided by this invention has a first conductive part disposed on a mating component and rotates synchronously with the mating component and the external rotating structure. A second conductive part is slidably disposed on a mounting component fixed to the external fixed structure. The mating component and the mounting component form a rotational fit. All components are arranged in an orderly manner according to functional requirements without redundancy, resulting in a compact structure suitable for installation environments with limited dry areas. An elastic element applies a continuous elastic thrust to the second conductive part, ensuring that the second conductive part is always tightly pressed against the first conductive part. Even when the external rotating structure operates at high speed, there will be no contact separation or gaps, ensuring stable adaptation to high-speed transmission requirements. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the structure of the conductive device provided by the present invention;
[0033] Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0034] In the picture:
[0035] 1. Mating part; 2. Mounting part; 21. Sliding groove; 3. First conductive part; 31. Annular contact surface; 4. Second conductive part; 5. Elastic part; 51. Hollow hole; 6. Conductive part; 7. Limiting part; 8. Bearing. Detailed Implementation
[0036] The invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the drawings, not the entire structure.
[0037] In the description of the invention, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical 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 the invention based on the specific circumstances.
[0038] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0040] Please see Figure 1 and Figure 2This embodiment provides a conductive device, including a mating part 1, a mounting part 2, a first conductive part 3, a second conductive part 4, an elastic member 5, and a conductive member 6. The mating part 1 is used to connect with an external rotating structure and rotates synchronously with the external rotating structure. The mounting part 2 is disposed on an external fixed structure, and the mounting part 2 is rotatably engaged with the mating part 1. The first conductive part 3 is disposed on the mating part 1 and moves synchronously with the mating part 1. The second conductive part 4 is slidably disposed on the mounting part 2. The elastic member 5 is disposed on the mounting part 2 and is configured to apply an elastic thrust toward the first conductive part 3 to the second conductive part 4, causing the second conductive part 4 to continuously press against the first conductive part 3, forming a conductive path through the pressing contact between the first conductive part 3 and the second conductive part 4. The conductive member 6 is connected to the mounting part 2 to discharge the electrical energy conducted to the mounting part 2 via the first conductive part 3 and the second conductive part 4.
[0041] During operation, the external rotating structure (such as a conveyor roller or rotating shaft) is connected to the mating part 1, driving the mating part 1 and the first conductive part 3 disposed thereon to rotate synchronously. The mounting part 2 is fixed to the external fixing structure, forming a rotational fit with the mating part 1. The second conductive part 4, which is slidably disposed on the mounting part 2, continuously presses against the surface of the first conductive part 3 under the elastic thrust applied by the elastic member 5 towards the first conductive part 3, thereby forming a stable conductive path. The static electricity generated by the panel is sequentially transmitted through the external rotating structure to the mating part 1, the first conductive part 3, and the second conductive part 4, and then conducted to the mounting part 2. Finally, it is discharged by the conductive member 6 connected to the mounting part 2 (such as grounding or connecting to a resistance detection device), thus completing the effective elimination of static electricity.
[0042] It is understandable that the first conductive part 3 is disposed on the mating part 1 and rotates synchronously with the mating part 1 and the external rotating structure, and the second conductive part 4 is slidably disposed on the mounting part 2 fixed to the external fixed structure. The mating part 1 and the mounting part 2 form a rotational fit. Each component is arranged in an orderly manner according to functional requirements and has no redundant design. The structure is compact and can be adapted to the installation environment of a small dry area.
[0043] It is also understandable that the elastic element 5 applies a continuous elastic thrust to the second conductive part 4, causing the second conductive part 4 to always press tightly against the first conductive part 3. Even if the external rotating structure operates at high speed, there will be no contact separation or gap, which can stably adapt to the high-speed transmission requirements.
[0044] In addition, the first conductive part 3 and the second conductive part 4 are made of compatible conductive materials, and the traditional rigid friction is replaced by pressure contact, which reduces the wear and loss of both, avoids poor contact caused by the generation of wear debris, and prevents the formation of insulation layer in humid environments. With the continuous pressure of the elastic element 5, the conductive path is always open, which meets the service life requirements for continuous and stable operation under full production conditions.
[0045] It should be noted that both the first conductive part 3 and the second conductive part 4 are made of metals with excellent conductivity, such as gold-copper alloy, silver-palladium alloy or platinum-iridium alloy. Such materials are not prone to forming an insulating layer in humid environments, and their hardness and wear resistance are suitable for the pressure contact working method of both. This can avoid the problem of traditional copper materials being easily worn and generating wear debris due to friction, and can also reduce contact resistance by taking advantage of excellent conductivity, further improving the conductivity reliability of the conductive path. In combination with the continuous thrust of the elastic element 5, it can maintain a stable conductive state for a long time and meet the service life requirements under full production conditions.
[0046] In this embodiment, static electricity is first introduced through the wear-resistant and corrosion-resistant mating part 1, which is connected to the external rotating structure, and then sequentially passes through the first conductive part 3, the second conductive part 4, and the mounting part 2, finally being discharged through the conductive part 6. All key components along the conductive path are made of conductive materials, ensuring a smooth and unobstructed electrostatic conduction path. The conductive part 6 includes a metal bolt and a conductive cable. The metal bolt is screwed onto the mounting part 2, and the conductive cable is mounted to the metal bolt via an O-type terminal.
[0047] Furthermore, the first conductive part 3 has an annular contact surface 31 at one end facing the second conductive part 4, and the second conductive part 4 has a contact surface adapted to the annular contact surface 31 at one end facing the first conductive part 3. The annular contact surface 31 is coaxial with the rotation axis of the mating part 1.
[0048] With this configuration, the annular contact surface 31 of the first conductive part 3 is coaxially arranged with the rotation axis of the mating part 1 and fits into the adaptable contact surface of the second conductive part 4. This ensures that the first conductive part 3 and the mating part 1 maintain uniform contact throughout the circumference when they rotate at high speed, avoiding poor local contact or gaps caused by rotational offset, and significantly improving the stability of the conductive path.
[0049] In addition, the annular contact surface 31 increases the effective contact area between the two and the contact pressure is evenly distributed throughout the circumference, which not only reduces the contact resistance and ensures smooth conductivity, but also reduces local excessive wear, further extending the service life of the component and meeting the needs of long-term stable operation under full production conditions.
[0050] In this embodiment, the first conductive part 3 is arranged in a hollow cylindrical shape, and the end face of the first conductive part 3 facing the second conductive part 4 forms an annular contact surface 31. The second conductive part 4 is arranged in a spherical shape, and the second conductive part 4 is adapted and fitted to the annular contact surface 31 through the spherical surface. Thus, the first conductive part 3 is cylindrical in the center and the end face forms an annular contact surface 31, and the second conductive part 4 is spherical and is adapted and fitted through the spherical surface. The multi-directional adaptation characteristic of the spherical surface can compensate for the slight wear of the first conductive part 3 caused by long-term operation or the slight coaxiality deviation during installation, ensuring that the two are always tightly fitted. Of course, in other embodiments, the first conductive part 3 can also be set to other shapes with an annular contact surface 31, such as a bowl shape, without specific requirements or limitations.
[0051] More importantly, compared with rigid friction, the contact pressure distribution of the spherical and annular surfaces is more uniform, the friction loss is significantly reduced, and no wear debris is generated, which meets the service life requirements under full production conditions. At the same time, the spherical structure has low rotational resistance, and the annular contact surface 31, which is coaxial with the rotation axis of the mating part 1, ensures that there is no jamming or contact gap when the two rotate relative to each other at high speed. This meets the high-speed operation requirements of the panel production line and makes up for the lack of speed adaptability of existing finished conductive slip rings.
[0052] To further optimize the contact stability between the first conductive part 3 and the second conductive part 4, the elastic element 5 is a compression spring, with a hollow hole 51 at the end facing the first conductive part 3. The spherical second conductive part 4 can be partially embedded in the hollow hole 51, thereby preventing the second conductive part 4 from shifting or shaking during high-speed operation and ensuring that it always remains in contact with the annular contact surface 31 of the first conductive part 3. In addition, the partial embedding method allows the elastic thrust of the compression spring to act more concentratedly on the second conductive part 4, which not only ensures the stability of the contact pressure between the two but also reduces the additional wear caused by relative motion, further avoiding the generation of wear debris and meeting the service life requirements for long-term stable operation under full production conditions.
[0053] Specifically, the mounting component 2 is provided with a sliding groove 21, in which the second conductive part 4 is slidably disposed. An elastic member 5 is disposed within the sliding groove 21, and the extension / retraction direction of the elastic member 5 is consistent with the sliding direction of the second conductive part 4. Thus, the sliding groove 21 provides guidance and limitation for the second conductive part 4, constraining its movement trajectory and preventing lateral deviation or swaying during sliding or high-speed operation, ensuring that the second conductive part 4 always presses against the first conductive part 3 along a preset direction. Simultaneously, the elastic member 5 and the second conductive part 4 are both located within the sliding groove 21, and their extension / retraction direction is consistent with the sliding direction. This allows the elastic force of the elastic member 5 to be completely concentrated on the sliding path of the second conductive part 4, preventing the elastic force from dispersing and generating component forces, ensuring stable pressure between the second conductive part 4 and the first conductive part 3, and further improving the reliability of the conductive path.
[0054] Furthermore, the conductive device also includes a limiting member 7 detachably connected to the mounting member 2. The limiting member 7 extends to the end of the sliding groove 21 away from the first conductive part 3, and the side of the limiting member 7 facing the elastic member 5 abuts against the elastic member 5 to axially limit the elastic member 5. Thus, the limiting member 7 adopts a detachable connection method, and subsequent maintenance does not require the entire conductive device to be disassembled. Only the limiting member 7 needs to be removed to replace the elastic member 5 or the second conductive part 4, significantly reducing maintenance difficulty and usage costs.
[0055] In this embodiment, the limiting member 7 includes a bolt that extends into and is screwed into the sliding groove 21 to abut against the elastic member 5. By rotating the bolt, its depth into the sliding groove 21 can be precisely adjusted, thereby controlling the compression of the elastic member 5. This ensures that the contact pressure between the second conductive part 4 and the first conductive part 3 remains within the appropriate range, effectively solving the problem of conductivity interruption caused by unstable contact pressure in the prior art and guaranteeing long-term stable conductivity under full production conditions. Furthermore, the screwed connection between the bolt and the sliding groove 21 combines detachability and connection reliability. During subsequent maintenance, only the bolt needs to be unscrewed to easily replace the elastic member 5 or the second conductive part 4, without the need for complete disassembly of the conductive device, further reducing maintenance difficulty and operating costs.
[0056] To ensure smooth relative rotation between mating part 1 and mounting part 2, a bearing 8 is used to achieve a rotational fit between them. Specifically, a mounting groove is provided on the side of mating part 1 facing mounting part 2, and the bearing 8 is embedded in the mounting groove. A boss is provided on the side of mounting part 2 facing mating part 1, and the boss is adapted to connect with the inner ring of the bearing 8.
[0057] This design allows the mounting groove and boss to fit together, providing bidirectional positioning for the bearing 8. This prevents axial displacement and radial wobble of the bearing 8 under high-speed operation or long-term vibration conditions, ensuring that the bearing 8 remains in its installed position. This, in turn, guarantees the stability of the relative rotation between the mating part 1 and the mounting part 2, ensuring that the first conductive part 3 and the second conductive part 4 are always aligned. Furthermore, the embedded assembly and boss fit design eliminates the need for additional fixing components. The bearing 8, mating part 1, and mounting part 2 form a compact integrated structure, without increasing the overall volume of the conductive device, thus meeting the installation space limitations of the limited drying area.
[0058] This embodiment also provides a conveying device, including a frame, a conveying roller, and the aforementioned conductive device. The conveying roller is rotatably mounted on the frame. The conductive device is disposed between the frame and the conveying roller, and is configured to discharge static electricity generated during the operation of the conveying roller.
[0059] It is understandable that the conveying equipment, including the aforementioned conductive device, can adapt to the narrow installation space between the frame and the conveyor roller to achieve efficient static electricity discharge, no abrasive generated, and long-lasting and stable conductivity. This ensures both panel yield and equipment automation efficiency, and its convenient maintenance and low replacement cost meet the long-term use requirements under full production conditions.
[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A conductive device, characterized in that, It includes a mating part (1), a mounting part (2), a first conductive part (3), a second conductive part (4), an elastic part (5), and a conductive part (6), wherein: The mating part (1) is used to connect with the external rotating structure and rotate synchronously with the external rotating structure; The mounting component (2) is mounted on an external fixed structure, and the mounting component (2) is rotatably engaged with the mating component (1); The first conductive part (3) is disposed on the mating part (1) and moves synchronously with the mating part (1); The second conductive part (4) is slidably disposed on the mounting part (2); The elastic element (5) is disposed on the mounting member (2). The elastic element (5) is configured to apply an elastic thrust toward the first conductive part (3) to the second conductive part (4), so that the second conductive part (4) continuously presses against the first conductive part (3), and the first conductive part (3) and the second conductive part (4) press against each other to form a conductive path. The conductive element (6) is connected to the mounting element (2) to discharge the electrical energy conducted to the mounting element (2) via the first conductive part (3) and the second conductive part (4).
2. The conductive device according to claim 1, characterized in that, The first conductive part (3) has an annular contact surface (31) at one end facing the second conductive part (4), and the second conductive part (4) has a contact surface adapted to the annular contact surface (31) at one end facing the first conductive part (3). The annular contact surface (31) and the rotation axis of the mating part (1) are coaxially arranged.
3. A conductive device according to claim 2, characterized in that, The first conductive part (3) is provided in the shape of a hollow cylinder, and the end face of the first conductive part (3) facing the second conductive part (4) forms the annular contact surface (31). The second conductive part (4) is spherically shaped and is adapted to fit the annular contact surface (31) through the spherical surface.
4. A conductive device according to claim 3, characterized in that, The elastic element (5) is a compression spring, and the end of the compression spring facing the first conductive part (3) is provided with a hollow hole (51). The spherical second conductive part (4) can be partially embedded in the hollow hole (51).
5. A conductive device according to claim 1, characterized in that, The mounting component (2) has a sliding groove (21), the second conductive part (4) is slidably disposed in the sliding groove (21), the elastic member (5) is disposed in the sliding groove (21), and the extension and retraction direction of the elastic member (5) is consistent with the sliding direction of the second conductive part (4).
6. A conductive device according to claim 5, characterized in that, The conductive device further includes a limiting member (7) detachably connected to the mounting member (2), the limiting member (7) extending to one end of the sliding groove (21) away from the first conductive part (3), the limiting member (7) abutting against the elastic member (5) on the side facing the elastic member (5) to axially limit the elastic member (5).
7. A conductive device according to claim 6, characterized in that, The limiting member (7) includes a bolt that extends into the sliding groove (21) and is screwed into the sliding groove (21) to abut against the elastic member (5).
8. A conductive device according to claim 1, characterized in that, The mating part (1) and the mounting part (2) are rotated together by a bearing (8).
9. A conductive device according to claim 8, characterized in that, The mating part (1) has an assembly groove on the side facing the mounting part (2), and the bearing (8) is embedded in the assembly groove; The mounting part (2) has a boss on the side facing the mating part (1), and the boss is adapted to be connected to the inner ring of the bearing (8).
10. A conveying device, characterized in that, Includes a frame, a conveyor roller, and a conductive device as described in any one of claims 1-9, wherein: The conveyor roller is rotatably mounted on the frame. The conductive device is disposed between the frame and the conveyor roller, and the conductive device is configured to discharge static electricity generated during the operation of the conveyor roller.