Dustproof and waterproof industrial robot control box sealing device

Abstract

The utility model provides a dustproof and waterproof industrial robot control box sealing device, which belongs to the technical field of sealing devices and comprises a box body, a box cover, an annular ball groove, a ball and an elastic sealing sleeve. The annular ball groove is formed in the joint face of the box body and the box cover and extends in the circumferential direction of the joint face. The balls are uniformly distributed in the annular ball groove, and the balls can roll in the annular ball groove; the elastic sealing sleeve wraps the outer sides of the balls, and when the box cover is closed, the balls roll in the annular ball grooves and extrude the elastic sealing sleeve, so that the elastic sealing sleeve is deformed to fill a gap between the box body and the box cover. The technical problem that a traditional industrial robot control box sealing device is poor in dustproof and waterproof performance due to the fact that a sealing rubber strip is prone to aging, uneven in stress and the like is solved.

Description

Technical Field

[0001] This utility model belongs to the field of sealing device technology, specifically, it relates to a dustproof and waterproof sealing device for an industrial robot control box. Background Technology

[0002] Industrial robots, as core equipment in modern manufacturing, play a crucial role in automated production lines. Their operational stability and reliability directly impact production efficiency and product quality. The control box, acting as the "central brain" of the industrial robot, integrates numerous sophisticated electrical components and circuits, all of which have stringent environmental requirements. Dust, moisture, and other external impurities can easily penetrate the control box, causing short circuits in electrical components, corrosion of wiring, and other malfunctions. This can lead to abnormal robot operation, equipment damage, and even production accidents. Therefore, the performance of the control box's sealing device, as the first line of defense against external impurities, is of paramount importance.

[0003] Traditional industrial robot control box sealing devices mostly employ a single sealing strip or sealing ring structure. This involves installing the sealing strip at the mating surface between the box body and the cover, relying on the pressure of the cover closing to deform and fill the gaps, thus achieving a seal. However, this traditional sealing method has several drawbacks. Firstly, during long-term use, the sealing strip is susceptible to aging, hardening, and decreased elasticity due to high temperatures and vibrations in the industrial environment, leading to a gradual weakening of its sealing performance and an inability to effectively block dust and moisture. Secondly, due to uneven stress on the sealing strip, excessively large local gaps can easily occur when the cover and box body close, especially when the control box is subjected to external impacts or vibrations. This can cause slight displacement between the sealing strip and the mating surface, allowing external impurities to enter. Furthermore, traditional sealing devices experience significant friction between the sealing strip and the mating surface during the opening and closing of the cover, increasing operational difficulty and accelerating strip wear, thus shortening its lifespan. These problems severely restrict the sealing performance of industrial robot control boxes and the overall reliability of the equipment, necessitating a new sealing device to address these challenges. Utility Model Content

[0004] In view of this, the present invention provides a dustproof and waterproof sealing device for industrial robot control boxes, which solves the technical problem that traditional industrial robot control box sealing devices suffer from poor dustproof and waterproof performance due to issues such as easy aging of sealing strips and uneven stress.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a dustproof and waterproof sealing device for an industrial robot control box, comprising a box body, a box cover, an annular ball groove, balls, and an elastic sealing sleeve; the annular ball groove is disposed at the mating surface of the box body and the box cover, and extends circumferentially along the mating surface; the balls are evenly distributed in the annular ball groove, and the balls can roll within the annular ball groove; the elastic sealing sleeve wraps around the outside of the balls, and when the box cover is closed, the balls roll within the annular ball groove and compress the elastic sealing sleeve, causing the elastic sealing sleeve to deform and fill the gap between the box body and the box cover.

[0007] The technical advantages of the dustproof and waterproof sealing device for an industrial robot control box provided by this utility model are as follows: By setting an annular ball groove, balls, and an elastic sealing sleeve, the rolling of the balls compresses the elastic sealing sleeve when the box lid is closed, causing the sealing sleeve to deform and fill the gaps, thus achieving a dustproof and waterproof seal between the control box body and the box lid. Compared with traditional sealing methods, this structure distributes the force on the sealing sleeve more evenly, effectively reducing gaps and improving the sealing effect; at the same time, the rolling characteristics of the balls reduce the friction when the box lid is opened and closed, making operation smoother and extending the service life of the sealing device.

[0008] Based on the above technical solution, the dustproof and waterproof sealing device for the industrial robot control box of this utility model can be further improved as follows:

[0009] The annular ball groove is formed on the top edge of the box body, and the bottom edge of the box cover is provided with an annular boss that mates with the annular ball groove. The annular boss is embedded in the annular ball groove, and space is reserved between the annular boss and the annular ball groove for the ball to roll.

[0010] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the annular ball groove is formed on the top edge of the control box body, and an annular boss is set on the bottom edge of the box cover and embedded therein. This matching method not only provides rolling space for the balls, but also plays a positioning role for the box cover, ensuring that the box cover and the box body close accurately, further improving the reliability of the seal. At the same time, the matching structure of the annular boss and the annular ball groove enhances the overall stability of the sealing device and reduces the risk of seal failure due to external forces.

[0011] Furthermore, the cross-section of the annular ball groove is arc-shaped, and the diameter of the ball is greater than the distance from the bottom of the annular ball groove to the surface of the annular boss, so as to ensure that the ball can squeeze the elastic sealing sleeve when the box cover is closed.

[0012] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the cross-section of the annular ball groove is arc-shaped, and the diameter of the ball is greater than the distance from the bottom of the groove to the surface of the annular boss. This ensures that the ball can effectively squeeze the elastic sealing sleeve when the lid is closed, allowing the sealing sleeve to fully deform and fill the gap, thus improving the sealing effect. The arc-shaped ball groove can better guide the ball rolling, reduce the jamming phenomenon during the ball rolling process, and ensure smooth opening and closing of the lid.

[0013] Furthermore, the annular ball groove is composed of multiple arc-shaped grooves spliced ​​together, and adjacent arc-shaped grooves are connected by a transition groove. The depth of the transition groove is not less than the depth of the arc-shaped groove, so as to ensure that the ball rolls smoothly in the annular ball groove.

[0014] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the annular ball groove is composed of multiple arc-shaped grooves spliced ​​together and connected by transition grooves, and the depth of the transition groove is not less than the depth of the arc-shaped groove, ensuring that the balls can roll smoothly in the annular ball groove, and there will be no jamming even on long sealing paths, thus improving the convenience of opening and closing the cover. At the same time, this splicing structure is easy to process and manufacture, and can be flexibly adjusted according to control boxes of different sizes.

[0015] Furthermore, the elastic sealing sleeve and the ball are interference-fitted, and the outer surface of the elastic sealing sleeve is provided with anti-slip texture to enhance the friction between the elastic sealing sleeve and the box body and box lid.

[0016] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the elastic sealing sleeve and the ball bearings are interference-fitted, ensuring that the sealing sleeve will not easily fall off the ball bearings, thus guaranteeing the stability of the sealing structure. The anti-slip texture on the outer surface of the sealing sleeve enhances the friction with the control box body and cover, allowing the sealing sleeve to better conform to the surface of the box body and cover when it is squeezed and deformed, further improving the sealing effect and preventing dust and moisture from seeping in from the contact point between the sealing sleeve and the box body and cover.

[0017] Furthermore, the lid and the body are connected by several connectors, which are evenly distributed around the circumference of the annular ball groove. The connectors can press the lid onto the body and work with the balls to compress the elastic sealing sleeve to achieve a seal.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the cover and the control box body are connected by connectors evenly distributed along the circumference of the annular ball groove. The connectors press the cover tightly against the box body, and the compression of the elastic sealing sleeve by the balls further enhances the sealing effect. The evenly distributed connectors ensure that the cover is subjected to uniform force, avoiding sealing failure due to insufficient local pressure, and also improving the overall structural strength and stability of the control box.

[0019] Furthermore, the connector includes a stud disposed on the housing and a threaded hole disposed on the housing cover. The stud passes through the threaded hole and is fastened by a nut. A washer is disposed between the nut and the housing cover.

[0020] The beneficial effects of adopting the above-mentioned improved scheme are as follows: Specifically, the connecting parts are defined as a combination structure of studs, threaded holes, nuts, and washers. This connection method is simple in structure, easy to operate, and convenient for installation and disassembly. The addition of washers can increase the contact area between the nut and the cover, making the pressure distribution more uniform, preventing damage to the cover surface when the nut is tightened, and also enhancing the reliability of the connection, ensuring that the cover can stably press the elastic sealing sleeve to achieve a seal.

[0021] Furthermore, a limiting structure is provided at the opening of the annular ball groove. The limiting structure can prevent the ball from falling out of the annular ball groove, while not affecting the deformation of the elastic sealing sleeve.

[0022] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the limiting structure at the opening of the annular ball groove can effectively prevent the balls from falling out of the groove, ensuring the normal operation of the sealing device and avoiding seal failure due to ball detachment. At the same time, the limiting structure does not affect the deformation of the elastic sealing sleeve, ensuring that it can fully fill the gap and maintain good dustproof and waterproof performance.

[0023] Furthermore, the limiting structure consists of flanges disposed on both sides of the annular ball groove opening, the flanges extending toward the center of the annular ball groove, and the distance between the flanges being less than the diameter of the ball.

[0024] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the limiting structure is specifically set as flanges extending from both sides of the groove towards the center with a spacing smaller than the diameter of the ball. This structure is simple and practical, and can reliably limit the movement range of the ball and prevent the ball from falling out. The flange design does not affect the deformation of the elastic sealing sleeve towards the groove when compressed, ensuring that the sealing sleeve can effectively fill the gap and achieve good dustproof and waterproof effect.

[0025] Furthermore, the elastic sealing sleeve is made of rubber.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the elastic sealing sleeve is made of wear-resistant, aging-resistant rubber material with elastic recovery ability, and reinforced with reinforcing fibers, which improves the strength and service life of the sealing sleeve, enabling it to work stably for a long time in complex industrial environments. Even after repeated opening and closing of the cover and deformation by compression, the sealing sleeve can still maintain good elasticity and sealing performance, reducing the frequency of maintenance and replacement of the sealing device and lowering the cost of use.

[0027] Compared with existing technologies, the beneficial effects of the dustproof and waterproof sealing device for industrial robot control boxes provided by this utility model are:

[0028] In terms of dust and water resistance, a highly efficient seal is achieved through the ingenious combination of annular ball grooves, balls, and an elastic sealing sleeve. When the lid closes, the balls roll within the annular ball grooves and compress the elastic sealing sleeve, allowing it to fully deform and tightly fill every gap between the cabinet and the lid. Unlike traditional sealing strips that rely solely on lid pressure for deformation, the rolling and compressing action of the balls ensures more even force distribution on the sealing sleeve. This effectively seals both large joint surfaces and minute gaps, significantly improving dust and water resistance. Simultaneously, this multi-layered protective structure forms a physical barrier. Dust and moisture must overcome multiple obstacles, including the balls and the elastic sealing sleeve, to enter the control box, greatly reducing the possibility of external impurities intruding.

[0029] In terms of ease of operation, the rolling characteristics of the ball bearings significantly reduce friction during lid opening and closing. Traditional sealing devices experience significant frictional resistance between the sealing strip and the mating surface during lid opening and closing, requiring operators to exert considerable effort and prone to jamming. In this invention, the ball bearings roll within an annular ball bearing groove, converting sliding friction into rolling friction, resulting in smoother lid opening and closing. This not only reduces operator workload but also improves equipment maintenance efficiency. Even after prolonged and frequent use, the excellent performance of the ball bearings and elastic sealing sleeve ensures smooth and effortless lid opening and closing.

[0030] Regarding service life, this invention employs multiple measures to extend the service life of the sealing device. The elastic sealing sleeve is made of wear-resistant, aging-resistant rubber material with elastic recovery capabilities, and reinforced with fibers to give it excellent mechanical properties and environmental adaptability. During repeated opening and closing of the lid and long-term compression deformation, the sealing sleeve can maintain a good sealing state through its own elastic recovery capability, and is not prone to aging or breakage. Simultaneously, the presence of the balls reduces direct friction between the elastic sealing sleeve and the box body and lid, further reducing the wear of the sealing sleeve. Furthermore, the special structural design of the annular ball groove, such as the arc-shaped cross-section, spliced ​​structure, and limiting flange, ensures smooth rolling and stable operation of the balls, preventing sealing device failure due to ball jamming or dislodgement, thereby effectively extending the service life of the entire sealing device and reducing equipment maintenance and replacement costs. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 Example diagram of a sealing device for a dustproof and waterproof industrial robot control box;

[0033] Figure 2 A side view of a dustproof and waterproof sealing device for an industrial robot control box;

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 10. Box body; 20. Box cover; 21. Annular boss; 30. Annular ball groove; 31. Ball; 32. Limiting structure. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0037] like Figure 1 , Figure 2 The image shows a first embodiment of a dustproof and waterproof sealing device for an industrial robot control box provided by this utility model. In this embodiment, it includes a box body 10, a box cover 20, an annular ball groove 30, balls 31, and an elastic sealing sleeve. The annular ball groove 30 is located at the mating surface between the box body 10 and the box cover 20, and extends circumferentially along the mating surface. The balls 31 are evenly distributed within the annular ball groove 30 and can roll within the annular ball groove 30. The elastic sealing sleeve wraps around the outside of the balls 31. When the box cover 20 is closed, the balls 31 roll within the annular ball groove 30 and compress the elastic sealing sleeve, causing the elastic sealing sleeve to deform and fill the gap between the box body 10 and the box cover 20.

[0038] Place the ball bearings evenly in the annular ball bearing groove at the mating surface between the control box body and the cover. Then, wrap the elastic sealing sleeve around the outside of the ball bearings. Next, align the cover with the control box body and slowly lower the cover. During the closing process, the ball bearings roll in the annular ball bearing groove and compress the elastic sealing sleeve until the cover is completely closed, completing the seal.

[0039] In the above technical solution, the annular ball groove 30 is formed on the top edge of the housing 10, and the bottom edge of the housing cover is provided with an annular boss 21 that cooperates with the annular ball groove 30. The annular boss 21 is embedded in the annular ball groove 30, and a space is reserved between the annular boss 21 and the annular ball groove 30 for the ball 31 to roll.

[0040] First, place the ball bearings into the annular ball bearing groove on the top edge of the control box, then wrap the ball bearings with the elastic sealing sleeve. Align the annular boss at the bottom of the cover with the annular ball bearing groove, and slowly lower the cover so that the annular boss smoothly embeds into the annular ball bearing groove. During the embedding process, the ball bearings roll and compress the elastic sealing sleeve, completing the positioning and sealing of the cover.

[0041] Furthermore, in the above technical solution, the cross-section of the annular ball groove 30 is arc-shaped, and the diameter of the ball 31 is greater than the distance from the bottom of the annular ball groove 30 to the surface of the annular boss 21, so as to ensure that the ball can squeeze the elastic sealing sleeve when the cover 20 is closed.

[0042] Before installation, confirm that the arc shape of the annular ball bearing groove and the size of the balls meet the requirements, and then place the balls into the annular ball bearing groove. After wrapping the elastic sealing sleeve, close the lid. During the pressing down of the lid, the balls roll in the arc groove and squeeze the elastic sealing sleeve until the lid is completely closed, achieving a tight seal.

[0043] Furthermore, in the above technical solution, the annular ball groove 30 is composed of multiple arc-shaped grooves spliced ​​together, and adjacent arc-shaped grooves are connected by a transition groove. The depth of the transition groove is not less than the depth of the arc-shaped groove, so as to ensure that the ball rolls smoothly in the annular ball groove 30.

[0044] First, the arc-shaped grooves and transition grooves are processed and spliced ​​into an annular ball bearing groove, which is then installed on the control box. After inserting the balls and wrapping them with an elastic sealing sleeve, the box cover is closed. The balls roll within the spliced ​​annular ball bearing groove and remain smooth when passing through the transition groove, compressing the elastic sealing sleeve to achieve a seal.

[0045] Furthermore, in the above technical solution, the elastic sealing sleeve and the ball are interference fit, and the outer surface of the elastic sealing sleeve is provided with anti-slip texture to enhance the friction between the elastic sealing sleeve and the box body 10 and the box cover.

[0046] The elastic sealing sleeve is tightly wrapped around the ball bearing and secured with an interference fit. After installation into the annular ball bearing groove, the lid is closed. As the ball bearing compresses the elastic sealing sleeve, the anti-slip texture makes close contact with the surface of the box and lid, enhancing the sealing performance.

[0047] Furthermore, in the above technical solution, the cover 20 and the body 10 are connected by several connectors. The connectors are evenly distributed along the circumference of the annular ball groove 30. The connectors can press the cover 20 onto the body 10 and achieve a seal by pressing the elastic sealing sleeve with the ball.

[0048] Align the cover with the control box body initially, ensuring the ball bearings and elastic sealing sleeve are in the correct positions. Connect the cover to the box body using connectors (such as bolts, clips, etc.) evenly distributed along the circumference of the ball bearing groove. Gradually tighten or fasten the connectors. As pressure is applied by the connectors, the cover further compresses the ball bearings and elastic sealing sleeve, achieving a tight seal.

[0049] Furthermore, in the above technical solution, the connecting component includes a stud provided on the housing 10 and a threaded hole provided on the housing cover 20. The stud passes through the threaded hole and is fastened by a nut. A washer is provided between the nut and the housing cover 20.

[0050] Pass the studs on the control box body through the threaded holes on the cover, place the washers, and tighten with the nuts. While tightening the nuts, gradually apply pressure to ensure a tight seal between the cover and the body. The ball bearings compress the elastic sealing sleeve, completing the sealing connection. To disassemble, unscrew the nuts, remove the washers, and the cover and body can be separated.

[0051] Furthermore, in the above technical solution, a limiting structure 32 is provided at the opening of the annular ball groove 30. The limiting structure 32 can prevent the balls from coming out of the annular ball groove 30, while not affecting the deformation of the elastic sealing sleeve.

[0052] Before installing the ball bearings and elastic sealing sleeve, check that the limiting structure at the opening of the annular ball bearing groove is intact. After placing the ball bearings into the annular ball bearing groove and wrapping them with the elastic sealing sleeve, close the cover. The limiting structure restricts the range of motion of the ball bearings throughout the process, ensuring that the ball bearings roll and compress the elastic sealing sleeve within the groove to achieve a seal, while preventing the ball bearings from coming out.

[0053] Furthermore, in the above technical solution, the limiting structure 32 is a flange provided on both sides of the groove opening of the annular ball groove 30, the flange extends toward the center of the annular ball groove 30, and the distance between the flanges is less than the diameter of the ball.

[0054] Furthermore, in the above technical solution, the elastic sealing sleeve is made of rubber material.

[0055] Specifically, the principle of this utility model is as follows:

[0056] The annular ball groove, as the fundamental structure of the entire device, plays a crucial role in the sealing effect and ball movement. Extending circumferentially along the mating surface between the control box body and the cover, the annular ball groove provides a rolling track for the balls. The groove's cross-section features an arc shape, which perfectly conforms to the balls, guiding them to roll smoothly within the groove and reducing rolling resistance and jamming. Furthermore, the ball groove is composed of multiple arc-shaped grooves connected by transition grooves, with the depth of the transition grooves not less than the depth of the arc-shaped grooves. This structural design ensures stable ball rolling even over long sealing paths, guaranteeing normal ball operation during both lid closure and opening, and providing continuous and stable power for the compression deformation of the elastic sealing sleeve.

[0057] Ball bearings play a crucial role in transmitting pressure during the sealing process. When the lid closes, it exerts downward pressure on the balls, causing them to roll within the annular ball bearing grooves. Because the balls are in close contact with the elastic sealing sleeve, they evenly transmit pressure to the sleeve during rolling, causing it to deform under pressure. The uniform distribution of the balls ensures consistent force on the elastic sealing sleeve in all directions, effectively filling the gap between the lid and the casing to form an effective sealing layer. Furthermore, the rolling characteristics of the balls transform the sliding friction of traditional sealing methods into rolling friction, significantly reducing friction and making opening and closing the lid easier and less strenuous, while also reducing wear between components.

[0058] The elastic sealing sleeve is the core component for achieving a seal, and its performance and structural design directly affect the sealing effect. Made of a special rubber material with added reinforcing fibers, the elastic sealing sleeve possesses excellent elasticity, wear resistance, and aging resistance. When compressed by the rolling balls, the elastic sealing sleeve can quickly deform, tightly conforming to the surface of the housing and lid, filling any tiny gaps and effectively preventing the intrusion of dust and moisture. Simultaneously, the elastic sealing sleeve and the rolling balls employ an interference fit, ensuring that the sleeve will not detach during ball rolling and compression, guaranteeing the stability of the sealing structure. Furthermore, the anti-slip texture on the outer surface of the elastic sealing sleeve further enhances the friction with the housing and lid, allowing it to better conform to the surface during deformation and improving the reliability of the seal.

Claims

1. A dustproof and waterproof sealing device for an industrial robot control box, characterized in that, The device includes a housing, a lid, an annular ball bearing groove, balls, and an elastic sealing sleeve. The annular ball bearing groove is located at the mating surface between the housing and the lid, and extends circumferentially along the mating surface. The balls are evenly distributed within the annular ball bearing groove and can roll within it. The elastic sealing sleeve wraps around the outside of the balls. When the lid is closed, the balls roll within the annular ball bearing groove and compress the elastic sealing sleeve, causing it to deform and fill the gap between the housing and the lid.

2. The dustproof and waterproof sealing device for an industrial robot control box according to claim 1, characterized in that, The annular ball groove is formed on the top edge of the box body, and the bottom edge of the box cover is provided with an annular boss that mates with the annular ball groove. The annular boss is embedded in the annular ball groove, and space is reserved between the annular boss and the annular ball groove for the ball to roll.

3. The dustproof and waterproof sealing device for an industrial robot control box according to claim 2, characterized in that, The cross-section of the annular ball groove is arc-shaped, and the diameter of the ball is greater than the distance from the bottom of the annular ball groove to the surface of the annular boss, so as to ensure that the ball can squeeze the elastic sealing sleeve when the box cover is closed.

4. The dustproof and waterproof sealing device for an industrial robot control box according to claim 3, characterized in that, The annular ball groove is composed of multiple arc-shaped grooves spliced ​​together. Adjacent arc-shaped grooves are connected by transition grooves. The depth of the transition groove is not less than the depth of the arc-shaped grooves to ensure that the balls roll smoothly within the annular ball groove.

5. The dustproof and waterproof sealing device for an industrial robot control box according to claim 4, characterized in that, The elastic sealing sleeve and the ball are interference-fitted, and the outer surface of the elastic sealing sleeve is provided with anti-slip texture to enhance the friction between the elastic sealing sleeve and the box body and box lid.

6. The dustproof and waterproof sealing device for an industrial robot control box according to claim 5, characterized in that, The lid and the body are connected by several connectors. The connectors are evenly distributed around the annular ball groove. The connectors can press the lid onto the body and work with the balls to compress the elastic sealing sleeve to achieve a seal.

7. A dustproof and waterproof sealing device for an industrial robot control box according to claim 6, characterized in that, The connector includes a stud on the housing and a threaded hole on the cover. The stud passes through the threaded hole and is fastened by a nut. A washer is provided between the nut and the cover.

8. The dustproof and waterproof sealing device for an industrial robot control box according to claim 7, characterized in that, A limiting structure is provided at the opening of the annular ball groove. The limiting structure can prevent the ball from falling out of the annular ball groove, while not affecting the deformation of the elastic sealing sleeve.

9. A dustproof and waterproof sealing device for an industrial robot control box according to claim 8, characterized in that, The limiting structure consists of flanges on both sides of the annular ball groove opening, the flanges extending toward the center of the annular ball groove, and the distance between the flanges being less than the diameter of the ball.

10. A dustproof and waterproof sealing device for an industrial robot control box according to claim 9, characterized in that, The elastic sealing sleeve is made of rubber.

Images