Guide rail with limiting function

Abstract

The invention discloses a guide rail with a limiting function, and belongs to the technical field of guide rails, and the guide rail is characterized by comprising a guide rail body and an electric sliding block, the electric sliding block is slidably connected with the guide rail, a sliding groove is formed in the guide rail body, and a moving block and a screw rod are arranged in the sliding groove; the moving block is in sliding connection with the guide rail body, the screw rod penetrates through the moving block and is in threaded connection with the moving block, the two ends of the screw rod are rotationally connected with the guide rail body, the moving block is connected with a baffle protruding out of the guide rail body, and the baffle is used for abutting against the electric sliding block. The electric sliding block can drive the baffle to move relative to the screw rod, the screw rod is connected with a speed reduction assembly used for reducing the speed of the screw rod in the rotating state, and the effect of reducing the over-travel phenomenon in the moving process of the electric sliding block is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of guide rails, and in particular to a guide rail with a limiting function. Background Art

[0002] At present, guide rails are a common mechanical component widely used in various industrial automation equipment to guide and support moving parts to move along a predetermined trajectory. However, traditional guide rail systems usually lack an effective limit mechanism, which may cause overtravel during the movement of the electric slider, resulting in equipment damage or operational safety accidents.

[0003] In order to solve this problem, the prior art generally uses external sensors and control systems to monitor the position of the electric slider and send a signal to stop moving when it approaches a preset limit position. However, in actual applications, the risk of overtravel may not be completely avoided due to limitations in sensor accuracy or response speed. Summary of the invention

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

[0005] The present invention provides a guide rail with a limited position function, which adopts the following technical solution: A guide rail with a limiting function comprises a guide rail body and an electric slider, the electric slider is slidably connected to the guide rail body, the guide rail body is provided with a slide groove, a moving block and a screw are arranged in the slide groove, 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 to a baffle protruding from the guide rail body, the baffle is used to abut the electric slider, so that the electric slider can drive the baffle to move relative to the screw, and the screw is connected to a deceleration assembly for decelerating the screw in a rotating state.

[0006] By adopting the above technical solution, when the electric slider moves along the guide rail body, when it approaches the preset limit position, the electric slider first contacts the baffle, and then the baffle drives the moving block to move, and the moving block drives the screw to rotate. During the movement, the electric slider converts part of the mechanical energy into the mechanical energy of the screw rotation, so as to achieve the initial deceleration of the electric slider. Then the deceleration component is started, and the deceleration component takes effect, further reducing the rotation speed of the screw, thereby slowing down the movement 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 overtravel phenomenon of the electric slider. Even if the deceleration component cannot stop the screw from rotating due to failure, loss, etc., when the moving block moves to the end wall of the slide slot, it will force the electric slider to stop moving, reducing the overtravel phenomenon during the movement of the electric slider. The electric slider is limited without using any sensor, reducing the risk of overtravel that cannot be completely avoided due to the limitation of sensor accuracy or response speed.

[0007] Preferably, the deceleration assembly includes a wheel, a cylinder and a clamping 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 clamping member is connected to the cylinder, and the clamping member is used to abut against the wheel in a rotating state to decelerate the wheel.

[0008] By adopting the above technical solution, under the control of the cylinder, the abutting member moves toward the wheel and abuts against the rotating wheel, thereby achieving deceleration of the wheel.

[0009] Preferably, it also includes at least two distance sensors and a control module, the distance sensor is connected to the guide rail body and is used to monitor the distance between itself and the baffle, the control module is electrically connected to the distance sensor, and the cylinder is electrically connected to the control module. When the control module receives a signal from any of the distance sensors that reaches a preset value, the cylinder starts.

[0010] By adopting the above technical solution, at least two distance sensors are set up, and the control module will receive a signal when any distance sensor responds, which can reduce the risk of overtravel that cannot be completely avoided due to limitations on sensor accuracy or response speed.

[0011] Preferably, a clamping groove is provided on the circumferential surface of the wheel, and the clamping groove includes a groove bottom and a groove top, the groove bottom is the surface of the clamping groove close to the screw, and the groove top is the surface of the clamping groove away from the screw, and the width of the groove top is greater than the width of the groove bottom; the width of the clamping member is greater than the width of the groove bottom, and when the clamping member extends into the clamping groove and moves toward the side close to the groove bottom, the wheel can be decelerated.

[0012] By adopting the above technical solution, in the process of the pressing member pressing against the wheel, the contact area between the pressing member and the wheel can be gradually increased, so that the screw rod is gradually decelerated, thereby increasing the deceleration effect of the screw rod.

[0013] Preferably, the wheels are made of silicone material.

[0014] By adopting the above technical solution, the silica gel has better wear resistance and increases the service life of the wheel.

[0015] Preferably, a mounting rod is provided between the clamping member and the cylinder, the mounting rod is fixedly connected to the cylinder, a mounting groove is provided on the clamping member, the mounting rod is inserted into the mounting groove, so as to fix the clamping member and the mounting rod.

[0016] By adopting the above technical solution, the replacement of the fastening member is facilitated.

[0017] Preferably, the fastening member is threadedly connected to the mounting rod.

[0018] By adopting the above technical solution, the position of the fastening member can be adjusted and the connection is more secure.

[0019] Preferably, the mounting rod sleeve is provided with a support plate, the support plate is threadedly connected to the mounting rod, and the support plate abuts against the fastening member.

[0020] By adopting the above technical solution, the support plate provides a stable supporting force for the fastening member, thereby reducing the possibility of shaking or deviation of the fastening member during operation.

[0021] Preferably, the abutting member is hemispherical.

[0022] By adopting the above technical solution, due to the hemispherical shape of the pressing member, the contact and separation between the pressing member and the wheel can be easily controlled by adjusting the cylinder, and the operation is simple and convenient.

[0023] Preferably, a protective pad is connected to the side wall of the baffle close to the electric slider.

[0024] By adopting the above technical solution, the protection pad can absorb the energy during collision and reduce noise.

[0025] In summary, the present invention has the following beneficial effects: During the movement of the electric slider along the guide rail body, when it approaches the preset limit position, the electric slider first contacts the baffle, and then the baffle drives the moving block to move, and the moving block drives the screw to rotate. During the movement, the electric slider converts part of the mechanical energy 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 takes effect, further reducing the rotation speed of the screw, thereby slowing down the movement 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 overtravel phenomenon of the electric slider. At the same time, even if the deceleration component cannot stop the screw from rotating due to failure, loss, etc., when the moving block moves to the end wall of the slide slot, it will force the electric slider to stop moving, reducing the overtravel phenomenon during the movement of the electric slider. The electric slider is limited without using a sensor, which reduces the risk of overtravel that cannot be completely avoided due to the limitation of sensor accuracy or response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a guide rail with a limiting function.

[0027] Figure 2 It is a structural schematic diagram of the reduction component.

[0028] Figure 3 It is a structural schematic diagram of the fastening member.

[0029] Description of reference numerals: 1. Guide rail body; 11. Slide groove; 2. Electric slider; 3. Moving block; 4. Screw; 5. Baffle; 51. Protective pad; 6. Speed ​​reduction assembly; 61. Wheel; 611. Clamping groove; 62. Cylinder; 63. Clamping piece; 631. Mounting groove; 7. Distance sensor; 8. Mounting rod; 9. Support plate. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] A guide rail with a limited position function, refer to Figure 1 and Figure 2 , including a guide rail body 1 and an electric slider 2, the electric slider 2 is slidably connected to the guide rail body 1. A slide groove 11 is provided on the guide rail body 1, and a moving block 3 and a screw 4 are arranged in the slide groove 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, and 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 the electric slider 2, so that the electric slider 2 can drive the baffle 5 to move relative to the screw 4, and the screw 4 is connected with a deceleration component 6, which is used to decelerate the screw 4 in a rotating state.

[0032] 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 contacts the baffle 5, and then the baffle 5 drives the moving block 3 to move, and the moving block 3 drives the screw 4 to rotate together, and the deceleration component 6 is started to further reduce the rotation speed of the screw 4, thereby slowing down the movement 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, so that the electric slider 2 stops moving, reducing the overtravel phenomenon of the electric slider 2. Even if the deceleration component 6 cannot stop the screw 4 from rotating due to failure, loss, etc., when the moving block 3 moves to the end wall of the slide 11, the baffle 5 will force the electric slider 2 to stop moving, reducing the overtravel phenomenon during the movement of the electric slider 2. The electric slider is limited without using any sensor, which reduces the risk of overtravel that cannot be completely avoided due to the limitation of sensor accuracy or response speed.

[0033] Reference Figure 1 In this embodiment, the slide groove 11 is arranged on the side wall of the guide rail body 1. In other embodiments, the specific position of the slide groove 11 can be adjusted according to actual conditions. The length direction of the slide groove 11 is parallel to the length direction of the guide rail body 1.

[0034] Reference Figure 1 The baffle plate 5 is vertically arranged and protrudes from the side wall of the guide rail body 1. The baffle plate 5 is fixedly connected with a protection pad 51 near the side wall of the electric slider 2. The protection pad 51 is supported by a rubber material.

[0035] When the electric slider 2 collides with the baffle 5 , the protection pad 51 can reduce the impact force and protect the safety of the equipment and the operator.

[0036] Reference Figure 1 The length direction of the screw rod 4 is parallel to the length direction of the guide rail body 1 , and the first end of the screw rod 4 extends out of the guide rail body 1 .

[0037] Reference Figure 2 The deceleration assembly 6 includes a wheel 61, a cylinder 62 and a fastening member 63. The wheel 61 is made of a silicone material, and is sleeved on the first end of the screw rod 4 and fixedly connected to the screw rod 4. A fastening groove 611 is provided on the circumferential wall of the wheel 61, and the fastening groove 611 includes a groove bottom and a groove top, the groove bottom is the surface of the fastening groove 611 close to the screw rod 4, the groove top is the surface of the fastening groove 611 away from the screw rod 4, and the width of the groove top is greater than the width of the groove bottom.

[0038] Reference Figure 2 and Figure 3, the cylinder 62 is arranged near the guide rail body 1. The abutting piece 63 is hemispherical, and a mounting rod 8 is arranged between the abutting piece 63 and the cylinder 62. One end of the mounting rod 8 is fixedly connected to the driving shaft of the cylinder 62, and the circumferential wall of the other end is provided with a thread. A mounting groove 631 is provided on the plane of the abutting piece 63. The mounting rod 8 is inserted into the mounting groove 631 and is threadedly connected to the abutting piece 63.

[0039] Under the control of the cylinder 62, the abutting member 63 moves toward the wheel 61 and abuts against the rotating wheel 61, thereby decelerating the wheel 61. At the same time, the position of the abutting member 63 can be adjusted, which is also convenient for replacing the abutting member 63, and the abutting member 63 is firmly connected to the mounting rod 8.

[0040] Reference Figure 2 A support plate 9 is sleeved on the mounting rod 8, and the support plate 9 is threadedly connected with the mounting rod 8. The support plate 9 is a plate-like body with a circular cross section, and the support plate 9 abuts against the abutting member 63.

[0041] The support plate 9 provides a stable supporting force for the abutting member 63 , thereby reducing the possibility of shaking or deflection of the abutting member 63 during operation.

[0042] Reference Figure 2 The diameter of the pressing member 63 is larger than the width of the groove bottom. When the pressing member 63 extends into the pressing groove 611 and moves toward the side close to the groove bottom, the wheel 61 can be decelerated.

[0043] In 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, so that the screw 4 is gradually decelerated, thereby increasing the deceleration effect of the screw 4. Reference Figure 1 A distance sensor 7 is fixedly connected to the guide rail body 1. At least two distance sensors 7 are provided, and two are provided in this embodiment. Both distance sensors 7 are located on one side of the slide slot 11 close to the end surface of the guide rail body 1. The distance sensor 7 is used to monitor the distance between itself and the baffle 5.

[0044] Reference Figure 1 The cylinder 62 is electrically connected to a control module, and the control module is electrically connected to both distance sensors 7. When the control module receives a signal that any distance sensor 7 reaches a preset value, the cylinder 62 is started.

[0045] By setting at least two distance sensors 7, the control module will receive a signal when any distance sensor 7 responds, which can reduce the risk of overtravel that cannot be completely avoided due to limitations on sensor accuracy or response speed.

[0046] The use principle of the present 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 contacts the baffle 5, and then the baffle 5 drives the moving block 3 to move, and the moving block 3 drives the screw 4 to rotate together. During the movement, the electric slider 2 converts part of the mechanical energy into the rotation of the screw 4, so that the electric slider 2 is initially decelerated. Then the deceleration component 6 is started, and the deceleration component 6 takes effect, so that the rotation speed of the screw 4 is further reduced, thereby slowing down the movement 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, so that the electric slider 2 stops moving, and the overtravel phenomenon of the electric slider 2 is reduced. Even if the deceleration component 6 cannot stop the screw 4 from rotating, when the moving block 3 moves to the end wall of the slide 11, the baffle 5 forces the electric slider 2 to stop moving, reducing the overtravel 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 being unable to completely avoid overtravel due to the limitation of sensor accuracy or response speed.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A guide rail with a limit function, characterized in that: The invention comprises a guide rail body (1) and an electric slider (2), wherein the electric slider (2) is slidably connected to the guide rail body (1), a slide groove (11) is provided on the guide rail body (1), a moving block (3) and a screw rod (4) are arranged in the slide groove (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 to 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), and the screw rod (4) is connected to a deceleration component (6) for decelerating the screw rod (4) in a rotating state.

2. A guide rail with a limiting function according to claim 1, characterized in that: The deceleration assembly (6) comprises a wheel (61), a cylinder (62) and a fastening 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 fastening member (63) is connected to the cylinder (62); the fastening member (63) is used to abut against the wheel (61) in a rotating state to decelerate the wheel (61).

3. A guide rail with a limiting function according to claim 2, characterized in that: It also includes at least two distance sensors (7) and a control module, wherein the distance sensor (7) is connected to the guide rail body (1) and is used to monitor the distance between itself and the baffle (5), the control module is electrically connected to the distance sensor (7), and the cylinder (62) is electrically connected to the control module. When the control module receives a signal from any of the distance sensors (7) that reaches a preset value, the cylinder (62) is started.

4. The guide rail with a limiting function according to claim 2, characterized in that: A clamping groove (611) is provided on the circumferential surface of the wheel (61), and the clamping groove (611) includes a groove bottom and a groove top, wherein the groove bottom is the surface of the clamping groove (611) close to the screw rod (4), and the groove top is the surface of the clamping groove (611) away from the screw rod (4), and the width of the groove top is greater than the width of the groove bottom; the width of the clamping member (63) is greater than the width of the groove bottom, and when the clamping member (63) extends into the clamping groove (611) and moves toward the side close to the groove bottom, the wheel (61) can be decelerated.

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

6. The guide rail with a limiting function according to claim 2, characterized in that: A mounting rod (8) is provided between the abutting member (63) and the cylinder (62), the mounting rod (8) being fixedly connected to the cylinder (62), a mounting groove (631) being provided on the abutting member (63), the mounting rod (8) being inserted into the mounting groove (631), thereby achieving fixation between the abutting member (63) and the mounting rod (8).

7. The guide rail with a limiting function according to claim 6, characterized in that: The fastening member (63) is threadedly connected to the mounting rod (8).

8. The guide rail with a limiting function according to claim 7, characterized in that: The mounting rod (8) is sleeved with a support plate (9), the support plate (9) is threadedly connected to the mounting rod (8), and the support plate (9) is in abutment with the abutting member (63).

9. The guide rail with a limiting function according to claim 2, characterized in that: The abutting member (63) is hemispherical.

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

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