A guide rail with a limiting function

Abstract

The present application discloses a guide rail with a limiting function, belonging to the technical field of guide rails. The key points of its technical solution include a guide rail body and an electric slider. The electric slider is slidably connected to the guide rail. A chute is provided on the guide rail body. A moving block and a screw rod are arranged in the chute. The moving block is slidably connected to the guide rail body. The screw rod passes through the moving block and is threadedly connected to the moving block. Both ends of the screw rod are rotatably connected to the guide rail body. The moving block is connected with a baffle protruding from the guide rail body. The baffle is used to abut against the electric slider so that the electric slider can drive the baffle to move relative to the screw rod. The screw rod is connected with a deceleration component for decelerating the screw rod in a rotating state, achieving the effect of reducing the over-travel phenomenon during the movement of the electric slider.

Description

Technical Field

[0001] This application relates to the technical field of guide rails, and particularly to a guide rail with a limiting function. Background Art

[0002] Currently, as a common mechanical component, the guide rail is widely used in various industrial automation equipment to guide and support moving components to move along a predetermined trajectory. However, traditional guide rail systems usually lack an effective limiting mechanism, and overtravel may occur during the movement of the electric slider, resulting in equipment damage or operational safety accidents.

[0003] To solve this problem, external sensors and control systems are usually used in the prior art to monitor the position of the electric slider and send signals to stop the movement when it approaches the preset limit position. However, in practical applications, the overtravel risk may not be completely avoided due to limitations in sensor accuracy or response speed. Summary of the Invention

[0004] In order to reduce overtravel during the movement of the electric slider, the present invention provides a guide rail with a limiting function.

[0005] The guide rail with a limiting function provided by the present invention adopts the following technical solution:

[0006] A guide rail with a limiting function includes a guide rail body and an electric slider. The electric slider is slidably connected to the guide rail body. A chute is provided on the guide rail body. A moving block and a screw are arranged in the chute. The moving block is slidably connected to the guide rail body. The screw passes through the moving block and is threadedly connected to the moving block. Both ends of the screw are rotatably connected to the guide rail body. The moving block is connected with a baffle protruding from the guide rail body. The baffle is used to abut against the electric slider so that the electric slider can drive the baffle to move relative to the screw. The screw is connected with a deceleration component for decelerating the rotating screw.

[0007] By adopting the above technical solution, during the movement of the electric slider along the guide rail body, when it approaches the preset limit position, the electric slider first abuts against the baffle, and then the baffle drives the moving block to move. The moving block drives the screw to rotate. During the movement of the electric slider, part of the mechanical energy is converted into the mechanical energy of the screw rotation to achieve the initial deceleration of the electric slider. Then, the deceleration component is started, and the deceleration component plays a role to further reduce the rotation speed of the screw, thereby slowing down the moving speed of the electric slider until the screw stops rotating. At this time, the moving block and the baffle stop moving, so that the electric slider stops moving, reducing the occurrence of overtravel phenomenon of the electric slider. Even if the deceleration component cannot stop the screw from rotating due to faults, wear, etc., when the moving block moves to the end wall of the chute, the electric slider will be forced to stop moving, reducing the occurrence of overtravel phenomenon during the movement of the electric slider. The limit of the electric slider is realized without using any sensors, reducing the risk of overtravel that cannot be completely avoided due to the limitations of sensor accuracy or response speed.

[0008] Preferably, the deceleration component includes a wheel, a cylinder and a pressing member. The wheel is sleeved on one end of the screw and extends out of the guide rail body. The cylinder is arranged near the guide rail body. The pressing member is connected to the cylinder, and the pressing member is used to abut against the rotating wheel to decelerate the wheel.

[0009] By adopting the above technical solution, under the control of the cylinder, the pressing member moves towards the wheel and abuts against the rotating wheel, thereby realizing the deceleration of the wheel.

[0010] Preferably, it further includes at least two distance sensors and a control module. The distance sensors are connected to the guide rail body and are used to monitor the distance between itself and the baffle. The control module is electrically connected to the distance sensors, and the cylinder is electrically connected to the control module. When the control module receives the signal that any one of the distance sensors reaches the preset value, the cylinder is started.

[0011] By adopting the above technical solution, with the setting of at least two distance sensors, when any one of the distance sensors responds, the control module will receive a signal, which can reduce the risk of overtravel that cannot be completely avoided due to the limitations of sensor accuracy or response speed.

[0012] Preferably, a pressing groove is formed on the circumferential surface of the wheel. The pressing groove includes a groove bottom and a groove top. The groove bottom is the surface of the pressing groove close to the screw, and the groove top is the surface of the pressing groove far from the screw. The width of the groove top is greater than the width of the groove bottom; the width of the pressing member is greater than the width of the groove bottom. When the pressing member extends into the pressing groove and moves towards the side close to the groove bottom, the wheel can be decelerated.

[0013] By adopting the above technical solution, during the process of the pressing member pressing against the wheel, the contact area between the pressing member and the wheel can be gradually increased, the screw can be gradually decelerated, and thus the deceleration effect of the screw can be increased.

[0014] Preferably, the wheel is made of silica gel material.

[0015] By adopting the above technical solution, silica gel has good wear resistance, increasing the service life of the wheel.

[0016] Preferably, an installation rod is arranged between the pressing member and the cylinder. The installation rod is fixedly connected with the cylinder. An installation groove is formed in the pressing member, and the installation rod is inserted into the installation groove to realize the fixation of the pressing member and the installation rod.

[0017] By adopting the above technical solution, it is convenient to replace the pressing member.

[0018] Preferably, the pressing member is in threaded connection with the installation rod.

[0019] By adopting the above technical solution, the position of the pressing member can be adjusted, and at the same time the connection is more firm.

[0020] Preferably, a support plate is sleeved on the installation rod. The support plate is in threaded connection with the installation rod, and the support plate abuts against the pressing member.

[0021] By adopting the above technical solution, the support plate provides a stable supporting force for the pressing member, reducing the possibility of the pressing member shaking or shifting during operation.

[0022] Preferably, the pressing member is hemispherical.

[0023] By adopting the above technical solution, due to the hemispherical shape of the pressing member, it is convenient to control the contact and separation between the pressing member and the wheel by adjusting the cylinder, and the operation is simple and convenient.

[0024] Preferably, a protective pad is connected to the side wall of the baffle plate close to the electric slider.

[0025] By adopting the above technical solution, the protective pad can absorb the energy during collision and reduce noise.

[0026] In summary, the present invention has the following beneficial effects:

[0027] During the movement of the electric slider along the guide rail body, when it approaches the preset limit position, the electric slider first abuts against the baffle, and then the baffle drives the moving block to move. The moving block drives the screw to rotate. During the movement of the electric slider, part of the mechanical energy is converted into the mechanical energy of the screw rotation to achieve the initial deceleration of the electric slider. Then, the deceleration component is started, and the deceleration component plays a role to further reduce the rotation speed of the screw, thereby slowing down the moving speed of the electric slider until the screw stops rotating. At this time, the moving block and the baffle stop moving, causing the electric slider to stop moving and reducing the over-travel phenomenon of the electric slider. At the same time, even if the deceleration component cannot stop the screw from rotating due to faults, wear, etc., when the moving block moves to the end wall of the chute, the electric slider will be forced to stop moving, reducing the over-travel phenomenon during the movement of the electric slider. The limit of the electric slider is realized without using a sensor, reducing the risk of over-travel that cannot be completely avoided due to the limitations of the sensor accuracy or response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an overall structural schematic diagram of a guide rail with a limiting function.

[0029] Figure 2 is a structural schematic diagram of the deceleration component.

[0030] Figure 3 is a structural schematic diagram of the abutting member.

[0031] DESCRIPTION OF THE REFERENCE NUMERALS:

[0032] 1. Guide rail body; 11. Chute; 2. Electric slider; 3. Moving block; 4. Screw; 5. Baffle; 51. Protection pad; 6. Deceleration component; 61. Wheel; 611. Abutting groove; 62. Cylinder; 63. Abutting member; 631. Installation groove; 7. Distance sensor; 8. Installation rod; 9. Support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] A guide rail with a limiting function, referring to Figure 1 and Figure 2 , includes a guide rail body 1 and an electric slider 2. The electric slider 2 is slidably connected to the guide rail body 1. A chute 11 is formed on the guide rail body 1, and a moving block 3 and a screw 4 are arranged in the chute 11. The moving block 3 is slidably connected to the guide rail body 1. The screw 4 passes through the moving block 3 and is threadedly connected to the moving block 3. Both ends of the screw 4 are rotatably connected to the guide rail body 1. The moving block 3 is fixedly connected with a baffle 5 protruding from the guide rail body 1. The baffle 5 is used to abut against the electric slider 2 so that the electric slider 2 can drive the baffle 5 to move relative to the screw 4. The screw 4 is connected with a deceleration component 6 for decelerating the screw 4 in a rotating state.

[0035] During the movement of the electric slider 2 along the guide rail body 1, when it approaches the preset limit position, the electric slider 2 first abuts against the baffle 5, and then the baffle 5 drives the moving block 3 to move. The moving block 3 will drive the screw 4 to rotate together, starting the deceleration component 6 to further reduce the rotation speed of the screw 4, thereby slowing down the moving speed of the electric slider 2 until the screw 4 stops rotating. At this time, the moving block 3 and the baffle 5 stop moving, causing the electric slider 2 to stop moving, reducing the over-travel phenomenon of the electric slider 2. Even if the deceleration component 6 cannot stop the rotation of the screw 4 due to faults, wear, etc., when the moving block 3 moves to the end wall of the chute 11, the electric slider 2 will be forced to stop moving through the baffle 5, reducing the over-travel phenomenon during the movement of the electric slider 2. The limit of the electric slider is achieved without using any sensors, reducing the risk of incomplete avoidance of over-travel due to the limitations of sensor accuracy or response speed.

[0036] Refer to Figure 1 In this embodiment, the chute 11 is provided on the side wall of the guide rail body 1. In other embodiments, the specific position of the chute 11 can be adjusted according to actual situations. The length direction of the chute 11 is parallel to the length direction of the guide rail body 1.

[0037] Refer to Figure 1 As shown, the baffle 5 is vertically arranged and protrudes from the side wall of the guide rail body 1. A protective pad 51 is fixedly connected to the side wall of the baffle 5 close to the electric slider 2. The protective pad 51 is made of rubber material.

[0038] When the electric slider 2 collides with the baffle 5, the protective pad 51 can reduce the impact force and protect the safety of the equipment and the operator.

[0039] Refer to Figure 1 As shown, the length direction of the screw 4 is parallel to the length direction of the guide rail body 1, and the first end of the screw 4 extends out of the guide rail body 1.

[0040] Refer to Figure 2 As shown, the deceleration component 6 includes a wheel 61, a cylinder 62 and a pressing member 63. The wheel 61 is made of silica gel material. The wheel 61 is sleeved on the first end of the screw 4 and is fixedly connected to the screw 4. A pressing groove 611 is formed on the circumferential wall of the wheel 61. The pressing groove 611 includes a groove bottom and a groove top. The groove bottom is the surface of the pressing groove 611 close to the screw 4, and the groove top is the surface of the pressing groove 611 away from the screw 4. The width of the groove top is greater than the width of the groove bottom.

[0041] Refer to Figure 2 and Figure 3, the air cylinder 62 is arranged near the guide rail body 1. The pressing member 63 is hemispherical. An installation rod 8 is arranged between the pressing member 63 and the air cylinder 62. One end of the installation rod 8 is fixedly connected to the driving shaft of the air cylinder 62, and the circumferential wall of the other end is provided with threads. An installation groove 631 is formed on the plane of the pressing member 63. The installation rod 8 is inserted into the installation groove 631 and is threadedly connected to the pressing member 63.

[0042] Under the control of the air cylinder 62, the pressing member 63 moves towards the wheel 61 and abuts against the rotating wheel 61, thereby realizing the deceleration of the wheel 61. At the same time, the position of the pressing member 63 can be adjusted, which is also convenient for the replacement of the pressing member 63, and the connection between the pressing member 63 and the installation rod 8 is firm.

[0043] Refer to Figure 2 , a support plate 9 is sleeved on the installation rod 8, and the support plate 9 is threadedly connected to the installation rod 8. The support plate 9 is a plate-shaped body with a circular cross-section, and the support plate 9 abuts against the pressing member 63.

[0044] The support plate 9 provides a stable supporting force for the pressing member 63, reducing the possibility of the pressing member 63 shaking or shifting during operation.

[0045] Refer to Figure 2 , the diameter of the pressing member 63 is greater than the width of the bottom of the groove. When the pressing member 63 extends into the pressing groove 611 and moves towards the side close to the bottom of the groove, the deceleration of the wheel 61 can be realized.

[0046] During the process of the pressing member 63 pressing against the wheel 61, the contact area between the pressing member 63 and the wheel 61 can be gradually increased, enabling the screw rod 4 to gradually decelerate, thereby enhancing the deceleration effect of the screw rod 4.

[0047] Refer to Figure 1 , a distance sensor 7 is fixedly connected to the guide rail body 1. At least two distance sensors 7 are provided, and in this embodiment, two distance sensors 7 are provided. Both of the two distance sensors 7 are located on the side of the sliding groove 11 close to the end face of the guide rail body 1. The distance sensor 7 is used to monitor the distance between itself and the baffle 5.

[0048] Refer to Figure 1 , the air cylinder 62 is electrically connected to a control module, and the control module is electrically connected to both of the two distance sensors 7. When the control module receives the signal that any one of the distance sensors 7 reaches the preset value, the air cylinder 62 is started.

[0049] With the setting of at least two distance sensors 7, as long as any one of the distance sensors 7 responds, the control module will receive the signal, which can reduce the risk of overtravel that cannot be completely avoided due to the limitations of the sensor accuracy or response speed.

[0050] The working principle of this application is as follows: During the movement of the electric slider 2 along the guide rail body 1, when it approaches the preset limit position, the electric slider 2 first abuts against the baffle 5, and then the baffle 5 drives the moving block 3 to move. The moving block 3 will drive the screw rod 4 to rotate together. During the movement of the electric slider 2, part of the mechanical energy is converted into the rotation of the screw rod 4, so that the electric slider 2 is initially decelerated. Then, the deceleration component 6 is started, and the deceleration component 6 takes effect to further reduce the rotation speed of the screw rod 4, thereby slowing down the moving speed of the electric slider 2 until the screw rod 4 stops rotating. At this time, the moving block 3 and the baffle 5 stop moving, so that the electric slider 2 stops moving, reducing the occurrence of over-travel phenomenon of the electric slider 2. Even if the deceleration component 6 cannot stop the screw rod 4 from rotating, when the moving block 3 moves to the end wall of the chute 11, the baffle 5 forces the electric slider 2 to stop moving, reducing the occurrence of over-travel phenomenon during the movement of the electric slider 2. The speed limit of the electric slider 2 can be achieved without a sensor, reducing the risk of over-travel that cannot be completely avoided due to the limitations of the sensor accuracy or response speed.

[0051] The embodiments of this specific implementation mode are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A guide rail with a limiting function, characterized in that: It includes a guide rail body (1) and an electric slider (2). The electric slider (2) is slidably connected to the guide rail body (1). A chute (11) is provided on the guide rail body (1). A moving block (3) and a screw rod (4) are arranged in the chute (11). The moving block (3) is slidably connected to the guide rail body (1). The screw rod (4) passes through the moving block (3) and is threadedly connected to the moving block (3). Both ends of the screw rod (4) are rotatably connected to the guide rail body (1). The moving block (3) is connected with a baffle (5) protruding from the guide rail body (1). The baffle (5) is used to abut against the electric slider (2) so that the electric slider (2) can drive the baffle (5) to move relative to the screw rod (4). The screw rod (4) is connected with a deceleration assembly (6) for decelerating the screw rod (4) in a rotating state. The deceleration assembly (6) includes a wheel (61), a cylinder (62) and a pressing member (63). The wheel (61) is sleeved on one end of the screw rod (4) and extends out of the guide rail body (1). The cylinder (62) is arranged near the guide rail body (1). The pressing member (63) is connected with the cylinder (62). The pressing member (63) is used to abut against the rotating wheel (61) to decelerate the wheel (61). It further includes at least two distance sensors (7) and a control module. The distance sensors (7) are connected with the guide rail body (1) for monitoring the distance between itself and the baffle (5). The control module is electrically connected with the distance sensors (7). The cylinder (62) is electrically connected with the control module. When the control module receives a signal that any one of the distance sensors (7) reaches a preset value, the cylinder (62) is started. A pressing groove (611) is formed on the circumferential surface of the wheel (61). The pressing groove (611) includes a groove bottom and a groove top. The groove bottom is the surface of the pressing groove (611) close to the screw rod (4). The groove top is the surface of the pressing groove (611) far from the screw rod (4). The width of the groove top is greater than that of the groove bottom. The width of the pressing member (63) is greater than that of the groove bottom. When the pressing member (63) extends into the pressing groove (611) and moves towards the side close to the groove bottom, the wheel (61) can be decelerated.

2. The guide rail with a limiting function according to claim 1, characterized in that: The wheel (61) is made of silica gel material.

3. A guide rail with a limiting function according to claim 1, characterized in that: An installation rod (8) is arranged between the pressing member (63) and the cylinder (62). The installation rod (8) is fixedly connected with the cylinder (62). An installation groove (631) is formed on the pressing member (63). The installation rod (8) is inserted into the installation groove (631) to fix the pressing member (63) and the installation rod (8).

4. A guide rail with a limiting function according to claim 3, characterized in that: The pressing member (63) is threadedly connected with the installation rod (8).

5. A guide rail with a limiting function according to claim 4, characterized in that: A support plate (9) is sleeved on the installation rod (8). The support plate (9) is threadedly connected with the installation rod (8) and abuts against the pressing member (63).

6. A guide rail with a limiting function according to claim 1, characterized in that: The pressing member (63) is hemispherical in shape.

7. A guide rail with a limiting function according to claim 1, characterized in that: A protective pad (51) is connected to the side wall of the baffle (5) close to the electric slider (2).

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