A clamping cylinder joint protection device

Abstract

This application discloses a clamping cylinder joint protection device, belonging to the field of cylinder protection devices. The device includes a cylinder body and a clamping plate hinged to the cylinder body via a hinge assembly. A connecting rod is fixedly connected to the output end of the cylinder body, and a ball is fixedly connected to the end of the connecting rod away from the cylinder body. A ball seat is fitted onto the ball, and an arc-shaped groove is formed on the ball seat to guide the connecting rod's movement. A U-shaped seat, fixedly connected to the clamping plate, is fixedly connected to the outer wall of the ball seat. A ring, adapted to the outer wall of the ball seat, is rotatably fitted onto the ball seat at the corresponding arc-shaped groove. The ring, adapted to the outer wall of the ball seat, provides dynamic shielding protection against the arc-shaped groove, effectively preventing external dust, particles, and other contaminants from entering the ball seat through the arc-shaped groove. This avoids dust mixing with the lubricating oil inside the ball seat to form oil stains, thereby reducing the frictional resistance of the ball when rotating within the ball seat and preventing rotational jamming caused by dirt accumulation.

Description

Technical Field

[0001] This application relates to the technical field of cylinder protection devices, specifically a clamping cylinder joint protection device. Background Technology

[0002] Clamping cylinders, as core actuators in industrial automation, are widely used in machining, assembly lines, and other scenarios. They connect the cylinder output to the clamping plate and transmit power through a connector structure. In existing technologies, the connector connecting the cylinder output to the clamping plate is typically an exposed design, directly exposed to the industrial environment. This structural feature makes the connector susceptible to external contaminants (such as dust, metal shavings, oil, etc.), especially in high-dust-concentration environments (such as foundries and grinding workshops) or in long-term continuous operation scenarios, where the problem is more pronounced.

[0003] Specifically, external dust and other particulate matter gradually adhere to the rotating parts of the joint and mix with lubricating grease to form viscous dirt. This dirt increases the frictional resistance of the joint rotation, causing sluggish cylinder action and reduced response accuracy, affecting the synchronization and processing quality of automated production lines. On the other hand, the hard particles in the dirt exacerbate the wear of the joint contact surfaces, which may lead to increased joint gaps and loose connections with long-term use, thereby increasing equipment maintenance frequency and downtime costs.

[0004] Therefore, this application provides a clamping cylinder joint protection device to solve the above problems. Utility Model Content

[0005] This application provides a clamping cylinder joint protection device, which aims to solve the problems mentioned in the background art, such as the exposed joint between the cylinder output end and the clamping plate being prone to dust accumulation, dust mixing with lubricating oil to form dirt leading to poor rotation, increased wear, and high maintenance costs due to the lack of effective protection measures.

[0006] To achieve the above objectives, this application provides the following technical solution: a clamping cylinder joint protection device, comprising a cylinder body and a clamping plate hinged to the cylinder body via a hinge assembly, wherein a connecting rod is fixedly connected to the output end of the cylinder body, a ball is fixedly connected to the end of the connecting rod away from the cylinder body, a ball seat is sleeved on the ball, an arc-shaped groove is provided on the ball seat for guiding the connecting rod to move, and a U-shaped seat fixedly connected to the clamping plate is fixedly connected to the outer wall of the ball seat;

[0007] To facilitate the shielding and protection of the arc-shaped groove, a ring adapted to the outer wall of the ball seat is rotatably fitted on the ball seat at the corresponding position of the arc-shaped groove. The connecting rod passes through the ring and is fixedly connected to it. The ring, adapted to the outer wall of the ball seat, provides dynamic shielding and protection for the arc-shaped groove, effectively preventing external dust, particles, and other contaminants from entering the ball seat through the arc-shaped groove. This design avoids dust mixing with the lubricating oil inside the ball seat to form oil stains, thereby reducing the frictional resistance of the ball when rotating within the ball seat, preventing rotational jamming caused by dirt accumulation, improving the smoothness of rotation and long-term operational reliability of the clamping cylinder connector, and reducing maintenance frequency.

[0008] Preferably, to avoid the U-shaped seat affecting the movement of the connecting rod inside the arc-shaped groove, the arc-shaped groove corresponds to the center of the opening of the U-shaped seat. Setting the arc-shaped groove to correspond to the center of the opening of the U-shaped seat ensures that the connecting rod is not interfered with or hindered by the U-shaped seat structure during its guided movement within the arc-shaped groove.

[0009] Preferably, a gap is provided between the U-shaped seat and the ball seat to allow the ring to rotate. This gap provides the necessary rotational space for the ring and avoids direct contact between the U-shaped seat and the ring, preventing frictional resistance.

[0010] Preferably, to improve the sealing performance of the ring and the ball seat: both ends of the ring are fixedly connected with convex rings, and the two sides of the ball seat are provided with annular grooves that match the convex rings. The convex rings at both ends of the ring and the annular grooves on both sides of the ball seat can form a physical seal at the joint between the ring and the ball seat, preventing dust, liquid and other contaminants from entering the interior of the ball seat from both axial ends of the ring.

[0011] Preferably, the hinge assembly includes a T-shaped seat fixed to the cylinder body, with hinge plates hinged to both sides of the top of the T-shaped seat, and the two hinge plates symmetrically hinged to both sides of the clamping plate. This allows the clamping plate to rotate freely around the hinge axis of the hinge plates, achieving a switch from an inclined state to a horizontal state under the drive of the cylinder body, ensuring the smoothness and reliability of the clamping action.

[0012] This application utilizes a ring that fits onto the outer wall of the ball seat to dynamically shield the arc-shaped groove on the ball seat, effectively preventing external dust, particles, and other contaminants from entering the ball seat through the arc-shaped groove. This design avoids dust mixing with the lubricating oil inside the ball seat to form oil stains, thereby reducing the frictional resistance of the ball when rotating within the ball seat, preventing rotational jamming caused by dirt accumulation, improving the smoothness of rotation and long-term operational reliability of the clamping cylinder joint, and reducing maintenance frequency.

[0013] This application uses the convex rings at both ends of the ring to match the annular grooves on both sides of the ball seat, which can form a physical seal at the port where the ring and the ball seat fit together, preventing dust, liquid and other contaminants from entering the ball seat from the axial ends of the ring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a clamping cylinder joint protection device;

[0015] Figure 2 This is a schematic diagram of the arc-shaped groove on the ball seat;

[0016] Figure 3 This is a schematic diagram of the structure connecting the ring and the sphere;

[0017] Figure 4 This is a cross-sectional view of the structure connecting the ring and the ball seat.

[0018] In the picture:

[0019] 1. Cylinder body; 2. Hinge assembly; 21. T-shaped seat; 22. Hinge plate; 3. Clamping plate; 4. Connecting rod; 41. Ball; 42. Ball seat; 421. Arc groove; 422. Annular groove; 43. U-shaped seat; 5. Circular ring; 51. Convex ring. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Example 1

[0022] This embodiment provides a clamping cylinder joint protection device, such as Figure 1-4As shown, the protective device includes a cylinder body 1 and a clamping plate 3 hinged to the cylinder body 1 via a hinge assembly 2. A connecting rod 4 is fixedly connected to the output end of the cylinder body 1. A ball 41 is fixedly connected to the end of the connecting rod 4 away from the cylinder body 1. A ball seat 42 is fitted on the ball 41. An arc-shaped groove 421 for guiding the movement of the connecting rod 4 is formed on the ball seat 42. A U-shaped seat 43 fixedly connected to the clamping plate 3 is fixedly connected to the outer wall of the ball seat 42. To facilitate the shielding and protection of the arc-shaped groove 421, a ring 5 adapted to the outer wall of the ball seat 42 is rotatably fitted on the ball seat 42 at the corresponding position of the arc-shaped groove 421. The connecting rod 4 passes through the ring 5 and is fixedly connected to it. Through the ring 5 adapted to the outer wall of the ball seat 42, a dynamic shielding and protection can be formed on the arc-shaped groove 421 on the ball seat 42, effectively preventing external dust, particles and other pollutants from entering the interior of the ball seat 42 through the arc-shaped groove 421. This design prevents dust from mixing with the lubricating oil inside the ball seat 42, thus reducing the frictional resistance of the ball 41 when rotating inside the ball seat 42. This prevents rotational jamming caused by dirt accumulation, improves the smoothness of rotation and long-term operational reliability of the clamping cylinder joint, and reduces maintenance frequency. When it is necessary to clamp an object on the worktable, the output end of the cylinder body 1 drives the connecting rod 4 to move upward. Under the action of the hinge assembly 2, the clamping plate 3 causes the U-shaped seat 43 to drive the ball seat 42 to rotate counterclockwise along the outer wall of the ball 41 and along the inner wall of the ring 5. The ring 5 always covers the opening area of ​​the arc groove 421. The arc-shaped groove 421 of the ball seat 42 moves along the outer wall of the connecting rod 4 until the clamping plate 3 changes from an inclined state to a horizontal state, thus clamping the object between the clamping plate 3 and the worktable. When it is necessary to remove the object, the connecting rod 4 is moved downward through the output end of the cylinder body 1. Under the action of the hinge assembly 2, the clamping plate 3 causes the U-shaped seat 43 to drive the ball seat 42 to rotate clockwise along the outer wall of the sphere 41 and along the inner wall of the ring 5, causing the arc-shaped groove 421 of the ball seat 42 to move along the outer wall of the connecting rod 4 until the clamping plate 3 moves from a horizontal state to an inclined state and stops, at which point it contacts the object. When the clamping plate 3 drives the ball seat 42 to rotate around the outer wall of the sphere 41 and the inner wall of the ring 5 through the U-shaped seat 43, the inner wall of the ring 5 provides rotational guidance for the ball seat 42, while its outer wall continuously blocks the arc-shaped groove 421, forming a dynamic seal to prevent external contaminants from entering.

[0023] To prevent the U-shaped seat 43 from affecting the movement of the connecting rod 4 within the arc-shaped groove 421, the arc-shaped groove 421 corresponds to the center of the opening of the U-shaped seat 43. Setting the arc-shaped groove 421 to correspond to the center of the opening of the U-shaped seat 43 ensures that the connecting rod 4 is not hindered by the structure of the U-shaped seat 43 during its guided movement within the arc-shaped groove 421. The U-shaped seat 43 is fixed to the outside of the ball seat 42 and connected to the clamping plate 3, with its opening direction aligned with the direction of the arc-shaped groove 421 of the ball seat 42. When the connecting rod 4 moves up and down with the output end of the cylinder body 1, the ball 41 rotates within the ball seat 42, while the connecting rod 4 slides in an arc along the arc-shaped groove 421. Since the position of the arc-shaped groove 421 perfectly corresponds to the center of the opening of the U-shaped seat 43, the movement trajectory of the connecting rod 4 passes precisely through the opening space of the U-shaped seat 43. The two arms of the U-shaped seat 43 only serve to connect the clamping plate 3 and the ball seat 42, and do not physically obstruct the movement of the connecting rod 4, ensuring that their movements do not interfere with each other.

[0024] A gap is provided between the U-shaped seat 43 and the ball seat 42 to allow the ring 5 to rotate. This gap provides the necessary rotation space for the ring 5 and prevents direct contact between the U-shaped seat 43 and the ring 5, thus avoiding frictional resistance. The U-shaped seat 43 is fixedly connected to the outer wall of the ball seat 42, and a gap of a specific width is reserved between its inner wall and the outer surface of the ball seat 42. This gap is larger than the thickness of the ring 5. When the U-shaped seat 43 drives the ball seat 42 and the arc groove 421 to rotate along the outside of the sphere 41, the ball seat 42 rotates along the inner wall of the ring 5, causing the gap to move along the outer wall of the ring 5. The ball seat 42 transmits the rotational driving force of the clamping plate 3 through the U-shaped seat 43, while the ring 5 rotates independently within the gap. The gap decouples the two movements, ensuring that the power transmission path and the movement of the protective structure do not interfere with each other.

[0025] To improve the sealing performance of the fit between the ring 5 and the ball seat 42, both ends of the ring 5 are fixedly connected with protruding rings 51, and the sides of the ball seat 42 are provided with annular grooves 422 that are adapted to the protruding rings 51. The protruding rings 51 at both ends of the ring 5 and the annular grooves 422 on both sides of the ball seat 42 can form a physical seal at the joint between the ring 5 and the ball seat 42, preventing dust, liquid and other contaminants from entering the interior of the ball seat 42 from the axial ends of the ring 5. The protruding rings 51 are annular protrusions extending outward from both ends of the ring 5, and the annular grooves 422 are annular grooves opened on both ends of the ball seat 42. The cross-sectional shape and size of the two are perfectly matched. When the ring 5 is fitted onto the outside of the ball seat 42, the protruding rings 51 are embedded in the annular grooves 422, forming a tight insertion fit. As the ring 5 rotates with the connecting rod 4, the convex ring 51 always fits against the groove wall of the annular groove 422, blocking the path of contaminants entering from the axial gap between the ring 5 and the ball seat 42, while allowing the ball seat 42 to rotate freely along the inner circumference of the ring 5, thus achieving a balance between sealing performance and movement flexibility.

[0026] The hinge assembly 2 includes a T-shaped seat 21 fixed to the cylinder body 1. Hinges 22 are hinged to both sides of the top of the T-shaped seat 21, and the two hinge plates 22 are symmetrically hinged to both sides of the clamping plate 3. This allows the clamping plate 3 to rotate freely around the hinge axis of the hinge plate 22, switching from an inclined state to a horizontal state under the drive of the cylinder body 1, ensuring the smoothness and reliability of the clamping action. When the output end of the cylinder body 1 drives the connecting rod 4 upward, the ball seat 42 pushes one end of the clamping plate 3 upward through the U-shaped seat 43, and the other end of the clamping plate 3 rotates counterclockwise around the hinge axis of the hinge plate 22, changing from an inclined state to a horizontal state, thus clamping the object. Conversely, when the connecting rod 4 moves downward, the clamping plate 3 rotates clockwise under the action of gravity or cylinder tension, returning to the inclined state and releasing the object. The symmetrical hinge plates 22 ensure that the clamping plate 3 remains balanced during rotation, avoiding movement deviation caused by uneven force.

[0027] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0028] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A clamping cylinder joint protection device, comprising a cylinder body (1) and a clamping plate (3) hinged to the cylinder body (1) via a hinge assembly (2), characterized in that: A connecting rod (4) is fixedly connected to the output end of the cylinder body (1). A ball (41) is fixedly connected to the end of the connecting rod (4) away from the cylinder body (1). A ball seat (42) is sleeved on the ball (41). An arc groove (421) is opened on the ball seat (42) for guiding the connecting rod (4) to move. A U-shaped seat (43) that is fixedly connected to the clamping plate (3) is fixedly connected to the outer wall of the ball seat (42). The ball seat (42) is rotatably fitted with a ring (5) that is adapted to the outer wall of the ball seat (42) at the corresponding arc groove (421). The connecting rod (4) passes through the ring (5) and is fixedly connected to it.

2. The clamping cylinder joint protection device according to claim 1, characterized in that: The arc-shaped groove (421) corresponds to the center of the opening of the U-shaped seat (43).

3. The clamping cylinder joint protection device according to claim 1, characterized in that: A gap is provided between the U-shaped seat (43) and the ball seat (42) for the ring (5) to rotate.

4. The clamping cylinder joint protection device according to claim 1, characterized in that: Both ends of the circular ring (5) are fixedly connected with protruding rings (51), and the ball seat (42) has annular grooves (422) on both sides that are adapted to the protruding rings (51).

5. The clamping cylinder joint protection device according to claim 1, characterized in that: The hinge assembly (2) includes a T-shaped seat (21) fixed on the cylinder body (1), and hinge plates (22) are hinged to both sides of the top of the T-shaped seat (21). The two hinge plates (22) are symmetrically hinged to both sides of the clamping plate (3).

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