A fixed guide device

Abstract

The utility model belongs to the field of laser welding technology discloses a kind of fixed guiding device.The fixed guiding device is used to be fixedly connected with the executing mechanism of square cylinder, and the fixed guiding device includes two guiding parts arranged in parallel and at intervals, the two guiding parts are all provided with guiding surface opposite to the outer surface of the cylinder body of square cylinder, and the two guiding surfaces can correspondingly slide along the two outer walls of the cylinder body of square cylinder in the direction of the shaft rod of square cylinder sliding.When the cylinder shaft rod is telescopic, the guiding surface slides along the outer wall of the cylinder body and contacts, to ensure that the movement direction of the executing mechanism is strictly parallel to the axis of the shaft rod, to prevent rotation or deviation, and the fixed guiding device is integrated with the square cylinder, with simple structure and easy installation.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a fixed guide device. Background Technology

[0002] In the field of laser welding, cylinders enable automated production. Cylinders can be controlled by solenoid valves to achieve simple opening and closing actions, which is convenient and easy. The cylinder uses a piston to drive a shaft, the end of which has threads for mounting an actuator. External forces on the actuator may cause the shaft to shift, potentially jamming it against the cylinder and causing abnormal operation of the actuator.

[0003] In related technologies, square cylinders with guide rods are generally used. The guide rods inside the cylinder body guide the cylinder and improve the situation of shaft misalignment. However, cylinders with guide rods have a complex internal structure, are large in size and weight, and are expensive. Utility Model Content

[0004] The purpose of this utility model is to provide a fixed guide device, which has a simple structure and is easy to install.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a fixed guide device for connecting to a square cylinder. The square cylinder includes a cylinder body, a piston, a shaft, and an actuator. The piston is slidably connected in the cylinder body. One end of the shaft passes through the cylinder body and is fixedly connected to the piston. The other end of the shaft extends out of the cylinder body and is fixedly connected to the actuator. The fixed guide device is used to fixally connect to the actuator of the square cylinder. The fixed guide device includes two guide parts arranged in parallel and spaced apart. Both guide parts have guide surfaces opposite to the outer surface of the cylinder body of the square cylinder. Along the sliding direction of the shaft of the square cylinder, the two guide surfaces can slide one-to-one relative to the two outer walls of the cylinder body of the square cylinder.

[0007] Preferably, the fixed guide device further includes a connecting part for fixed connection with the actuator of the square cylinder. The connecting part is arranged perpendicular to the two guide parts and is fixedly connected between the two guide parts.

[0008] Preferably, the connecting part and the two guide parts are integrally formed.

[0009] Preferably, the connecting part and the two guide parts form a U-shaped groove, the opening direction of the U-shaped groove is consistent with the sliding direction of the shaft of the square cylinder, and the U-shaped groove can fit at least a part of the square cylinder.

[0010] Preferably, the ends of the two guides away from the connecting parts are chamfered so that the opening of the U-shaped groove is flared.

[0011] Preferably, the connecting part is provided with a connecting hole along the direction of sliding of the shaft, and the fixed guide device also includes a connector that passes through the connecting hole and can be screwed to the actuator of the square cylinder.

[0012] Preferably, the connecting part is provided with multiple connecting holes at intervals, the fixed guide device is provided with multiple connecting parts, the multiple connecting parts pass through the multiple connecting holes one by one, and the multiple connecting parts can be screwed to the actuator of the square cylinder.

[0013] Preferably, the connecting hole is a slotted hole.

[0014] Preferably, the connecting part is provided with multiple mounting holes perpendicular to the direction of shaft sliding, and the multiple mounting holes are used to connect with external parts.

[0015] Preferably, the guide surfaces of both guide parts can be clearance-fitted with the corresponding outer wall of the cylinder, and the clearance between the guide surface and the outer wall of the cylinder is smaller than the clearance between the shaft and the cylinder.

[0016] The beneficial effects of this utility model are as follows:

[0017] A fixed guide device is provided, which is integrated with the actuator of a square cylinder through a fixed connection, becoming part of the actuator. It moves synchronously with the shaft, ensuring installation stability. Each guide section has a guide surface that fits against the outer wall of the square cylinder, with two guide surfaces corresponding to two opposite outer walls of the cylinder. When the cylinder shaft extends or retracts, the guide surfaces slide along the outer wall of the cylinder, ensuring that the movement direction of the actuator is strictly parallel to the shaft axis, preventing rotation or deviation. The fixed guide device is externally integrated into the square cylinder, resulting in a simple structure and easy installation. Attached Figure Description

[0018] Figure 1 This is an isometric drawing of the fixed guide device provided by this utility model;

[0019] Figure 2 This is a top view of the fixed guide device and the square cylinder provided by this utility model.

[0020] Figure 3 This is an assembly drawing showing the fixed guide device and the square cylinder provided by this utility model.

[0021] In the picture:

[0022] 1. Guide section; 11. Guide surface; 12. Chamfer;

[0023] 2. Connecting part; 21. Connecting hole; 22. Assembly hole;

[0024] 3. U-shaped groove;

[0025] 4. Square cylinder; 41. Cylinder body; 42. Shaft; 43. Actuator. Detailed Implementation

[0026] The present 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 of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly 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 this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly 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.

[0029] 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] Please refer to Figures 1 to 3This embodiment provides a fixed guide device for connecting to a square cylinder 4. The square cylinder 4 includes a cylinder body 41, a piston (not shown in the figure), a shaft 42, and an actuator 43. The piston is slidably connected in the cylinder body 41. One end of the shaft 42 passes through the cylinder body 41 and is fixedly connected to the piston. The other end of the shaft 42 extends out of the cylinder body 41 and is fixedly connected to the actuator 43. The fixed guide device is used to fixally connect to the actuator 43 of the square cylinder 4. The fixed guide device includes two guide parts 1 arranged in parallel and spaced apart. Both guide parts 1 have guide surfaces 11 that are opposite to the outside of the cylinder body 41 of the square cylinder 4. Along the sliding direction of the shaft 42 of the square cylinder 4, the two guide surfaces 11 can slide relative to the two outer walls of the cylinder body 41 of the square cylinder 4 in a one-to-one correspondence. In this configuration, the fixed guide device is integrated with the actuator 43 of the square cylinder 4 via a fixed connection, becoming part of the actuator 43. It moves synchronously with the shaft 42, ensuring installation stability. Each guide part 1 has a guide surface 11 that fits against the outer wall of the cylinder body 41 of the square cylinder 4, with the two guide surfaces 11 corresponding to the two opposite outer walls of the cylinder body 41. When the cylinder shaft 42 extends or retracts, the guide surfaces 11 slide along the outer wall of the cylinder body 41, ensuring that the movement direction of the actuator 43 is strictly parallel to the axis of the shaft 42, preventing rotation or deviation. The fixed guide device is externally integrated into the square cylinder 4, resulting in a simple structure and easy installation.

[0031] Alternatively, please refer to Figure 1 The fixed guide device also includes a connecting part 2, which is used to fixally connect to the actuator 43 of the square cylinder 4. The connecting part 2 is set perpendicular to the two guide parts 1 and is fixedly connected between the two guide parts 1. With this configuration, the distance between the two guide parts 1 is guaranteed by the one-time machining of the connecting part 2. During on-site installation, there is no need for repeated adjustments; it can be directly fitted onto the cylinder body 41 to obtain the designed clearance. This shortens the assembly time and eliminates the problem of inconsistent clearance caused by human error. At the same time, the connecting part 2 is located between the two guide surfaces 11 and has no additional outward-extending brackets. The entire device is only slightly wider than the cylinder body 41 itself, with a compact structure, making it suitable for narrow installation spaces.

[0032] Specifically, please refer to Figure 1 The connecting part 2 and the two guide parts 1 form a U-shaped groove 3. The opening direction of the U-shaped groove 3 is consistent with the sliding direction of the shaft 42 of the square cylinder 4. The U-shaped groove 3 can be fitted onto at least a part of the square cylinder 4. With this configuration, the U-shaped groove 3 itself serves as both a guide and a mounting body. The cylinder body 41 does not need to be welded with lugs or threaded holes, and the entire cylinder can be "naked". The transition plate and support on the equipment side are also eliminated, resulting in a simple and compact structure that is easy to install.

[0033] Furthermore, the connecting part 2 and the two guide parts 1 are integrally formed. This integral forming eliminates all screws, pins, welds or glued joints, forming a continuous integral beam, which improves the bending and torsional stiffness of the device; at the same time, the integral forming avoids the cumulative error caused by the assembly of multiple parts, improves the guiding accuracy of the device, reduces assembly time, and facilitates the assembly of the fixed guide device and the square cylinder 4.

[0034] Alternatively, please refer to Figure 1 and Figure 3 Both guide parts 1 have a chamfer 12 at the end furthest from the connecting part 2, so that the opening of the U-shaped groove 3 is flared. With this design, the flared opening changes the original "square hole-square column" fit that had to be strictly aligned to a "larger first, smaller later" sliding action. The operator or robot only needs to roughly align the device with the cylinder body 41 and push it to automatically align it, which facilitates the alignment of the U-shaped groove 3 of the fixed guide device with the square cylinder 4 and improves assembly efficiency.

[0035] Alternatively, please refer to Figure 1 and Figure 2 Along the sliding direction of the shaft 42, the connecting part 2 is provided with a connecting hole 21. The fixed guide device also includes a connector that passes through the connecting hole 21 and can be screwed to the actuator 43 of the square cylinder 4. By setting the connecting hole 21 to be in the same direction as the axis of the shaft 42, the connector directly transmits the force along the center line of the shaft 42 to the actuator 43 without generating additional bending moment. Compared with side or vertical locking, this avoids the risk of shaft 42 bending and makes the load on the guide surface 11 more even. Specifically, in this embodiment, the connector is a bolt; in other embodiments, the connector can also be a screw, rivet, etc.

[0036] Furthermore, the connecting part 2 is provided with a plurality of connecting holes 21 at intervals, and the fixed guide device is provided with a plurality of connecting members, which pass through the plurality of connecting holes 21 in a corresponding manner, and each of the plurality of connecting members can be screwed to the actuator 43 of the square cylinder 4. Specifically, the connecting part 2 is provided with two connecting holes 21, which are symmetrically arranged with respect to the centerline of the fixed guide device. This arrangement, by providing two connecting holes 21, prevents the fixed guide device from rotating relative to the square cylinder 4, ensuring that the fixed guide device moves along the axis of the shaft 42, and further enhancing the stability and reliability of the fixed guide device.

[0037] Preferably, the connecting hole 21 is an oblong hole. The oblong hole facilitates alignment with the threaded hole on the actuator 43 of the square cylinder 4, thereby facilitating the assembly of the connecting parts.

[0038] Optionally, perpendicular to the sliding direction of the shaft 42, the connecting part 2 is provided with multiple mounting holes 22 for connecting with external components. Specifically, the external components are actuating mechanisms, such as clamps, lifting fixtures, etc. The mounting holes 22 facilitate the expansion of the cylinder's function, and the external components can be "plugged in and hung," making assembly convenient and highly versatile.

[0039] Optionally, the guide surfaces 11 of both guide parts 1 can be clearance-fitted with the corresponding outer wall of the cylinder body 41, and the clearance between the guide surface 11 and the outer wall of the cylinder body 41 is smaller than the clearance between the shaft 42 and the cylinder body 41. This arrangement ensures the sliding fit between the guide surface 11 of the fixed guide device and the cylinder body 41, while preventing the shaft 42 from bending due to uneven load distribution of the actuator 43, or even jamming with the cylinder body 41.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. 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 this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fixed guide device for connecting to a square cylinder (4), the square cylinder (4) comprising a cylinder body (41), a piston, a shaft (42), and an actuator (43), wherein the piston is slidably connected in the cylinder body (41), one end of the shaft (42) passes through the cylinder body (41) and is fixedly connected to the piston, and the other end of the shaft (42) extends out of the cylinder body (41) and is fixedly connected to the actuator (43), characterized in that, The fixed guide device is used to be fixedly connected to the actuator (43) of the square cylinder (4). The fixed guide device includes two guide parts (1) arranged in parallel and spaced apart. Each of the two guide parts (1) has a guide surface (11) opposite to the outside of the cylinder body (41) of the square cylinder (4). Along the direction of sliding of the shaft (42) of the square cylinder (4), the two guide surfaces (11) can slide relative to the two outer walls of the cylinder body (41) of the square cylinder (4) in a one-to-one correspondence.

2. The fixed guide device according to claim 1, characterized in that, The fixed guide device further includes a connecting part (2), which is used to be fixedly connected to the actuator (43) of the square cylinder (4). The connecting part (2) is arranged perpendicular to the two guide parts (1) and is fixedly connected between the two guide parts (1).

3. The fixed guide device according to claim 2, characterized in that, The connecting part (2) and the two guide parts (1) are integrally formed.

4. The fixed guide device according to claim 2, characterized in that, The connecting part (2) and the two guide parts (1) surround to form a U-shaped groove (3). The opening direction of the U-shaped groove (3) is consistent with the sliding direction of the shaft (42) of the square cylinder (4). The U-shaped groove (3) can be fitted onto at least a part of the square cylinder (4).

5. The fixed guide device according to claim 4, characterized in that, Both guide portions (1) have a chamfer (12) at the end away from the connecting portion (2) so that the opening of the U-shaped groove (3) is flared.

6. The fixed guide device according to claim 2, characterized in that, Along the direction of sliding of the shaft (42), the connecting part (2) is provided with a connecting hole (21), and the fixed guide device also includes a connector that passes through the connecting hole (21) and can be screwed to the actuator (43) of the square cylinder (4).

7. The fixed guide device according to claim 6, characterized in that, The connecting part (2) is provided with a plurality of connecting holes (21) at intervals, and the fixed guide device is provided with a plurality of connecting members. The plurality of connecting members pass through the plurality of connecting holes (21) in a corresponding manner, and the plurality of connecting members can be screwed to the actuator (43) of the square cylinder (4).

8. The fixed guide device according to claim 6, characterized in that, The connecting hole (21) is a waist-shaped hole.

9. The fixed guide device according to claim 2, characterized in that, Perpendicular to the sliding direction of the shaft (42), the connecting part (2) is provided with a plurality of mounting holes (22), which are used to connect with external components.

10. The fixed guide device according to any one of claims 1-9, characterized in that, The guide surfaces (11) of both guide parts (1) can be clearance-fitted with the outer wall of the corresponding cylinder (41), and the gap between the guide surfaces (11) and the outer wall of the cylinder (41) is smaller than the gap between the shaft (42) and the cylinder (41).

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