Flexible linear guide rail protection device

Abstract

The utility model discloses a flexible linear guide rail protection device, including side stand, guide rail, sliding block and the protection mechanism of innovative design, when sliding block removes to the guide rail end portion and has not decelerated, the sliding block on the sliding nu from the straight slot of rotating lever slides into spiral groove, drives rotating lever rotation, and then through the stroke trigger mechanism drives transmission ring rotation, transmission ring is driven screw rod rotation through synchronous belt, makes the flexible energy -absorbing member on the nut block stretch out, forms protection to side stand, prevents sliding block and hits damage, if sliding block normal deceleration, stroke trigger mechanism is disconnected with transmission ring, and flexible energy -absorbing member does not act, avoids the interference guide rail available stroke, and the device is combined through mechanical linkage and intelligent trigger, realizes the independent response of end protection and efficient energy -absorbing.

Description

Technical Field

[0001] This utility model relates to the technical field of guide rail protection mechanisms, and more specifically, it relates to a flexible linear guide rail protection device. Background Technology

[0002] Flexible linear guides are mechanical components that achieve precise linear motion through elastic deformation or flexible structures. They are widely used in CNC machine tools, automated equipment, and robotics. Their core advantage lies in absorbing external impacts through flexible design (such as elastic guides and buffer structures), reducing the interference of mechanical vibration on positioning accuracy, and improving the system's adaptability to dynamic loads. However, end protection of flexible guides remains a pain point in the industry—when the slider moves at high speed to the end of the guide, without effective protection, rigid collisions of the end structure can easily lead to guide deformation, slider detachment, or failure of transmission components, directly affecting equipment lifespan and machining accuracy.

[0003] To avoid end impact, existing technologies typically use PLCs or sensors to control the slider to decelerate before the end. However, in actual working conditions, the control system may fail to trigger deceleration due to signal delays, program errors, or mechanical failures, causing the slider to impact the end at high speed. In this case, the end structure of the rigid guide rail will be subjected to instantaneous impact force, causing failures such as guide rail bending, slider jamming, or transmission component breakage. Traditional protection solutions (such as fixed buffers) require the guide rail travel space to be occupied, reducing the effective range of motion.

[0004] Therefore, there is an urgent need for a flexible end protection technology that can be actively triggered when the slider goes out of control without interfering with normal movement.

[0005] Therefore, in order to solve the above-mentioned technical problems, this application proposes a flexible linear guide rail protection device. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a flexible linear guide rail protection device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flexible linear guide rail protection device, comprising a side plate and a guide rail disposed on the side plate, with a slider installed on the guide rail, characterized in that: the flexible linear guide rail protection device further comprises:

[0008] A rotating rod is rotatably mounted on the side plate, and a straight groove and a spiral groove are connected on the rotating rod. The slider is slidably mounted in the straight groove by a sliding button. When the slider moves on the guide rail to a position close to the side plate, the sliding button slides into the spiral groove and causes the rotating rod to rotate.

[0009] A transmission ring is rotatably mounted on the side plate, and the transmission ring is connected to the rotating rod through a stroke triggering mechanism. When the slider approaches the side plate and no deceleration occurs, the stroke triggering mechanism connects to the transmission ring and drives the transmission ring to rotate. When the slider approaches the side plate and deceleration occurs, the transmission ring is disconnected from the stroke triggering mechanism.

[0010] A transmission component is mounted on the side plate and connected to the drive ring. A flexible energy-absorbing component is also mounted on the transmission component. When the transmission ring rotates, the transmission component drives the flexible energy-absorbing component to perform a protective action on the side plate.

[0011] Preferably, the stroke triggering mechanism includes a transmission rod rotatably mounted on the side plate, an elastic pawl mounted on the transmission rod via a torsion spring, and a ratchet groove is formed on the inner wall of the transmission ring at the position corresponding to the elastic pawl. The transmission rod is connected to the end of the rotating rod in a transmission connection.

[0012] Preferably, the transmission component includes a lead screw rotatably mounted on the side plate, a synchronous belt being installed on the outer surface of the transmission ring via a synchronous pulley, a nut block being threaded onto the lead screw, and a flexible energy-absorbing component being provided on the nut block.

[0013] Preferably, the flexible linear guide rail protection device further includes a second ratchet groove formed on the inner wall surface of the transmission ring. The engagement position of the second ratchet groove is opposite to that of the first ratchet groove. The transmission rod is provided with a pawl by a one-way torsion spring at the position corresponding to the second ratchet groove, and the end face of the pawl abuts against the engagement position of the second ratchet groove.

[0014] Preferably, an elastic element is provided near the maximum stroke position of the lead screw, and the elastic element is used to limit the position of the nut block.

[0015] Preferably, the flexible energy-absorbing element is one of elastic rubber, hydraulic buffer, or damper.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the slider fails to decelerate and approaches the end due to control error, the sliding button slides into the spiral groove to drive the rotating rod to rotate. Through the stroke trigger mechanism, the flexible energy-absorbing component is quickly extended to effectively absorb the impact energy and prevent damage to the side plate or slider.

[0018] 2. When the slider decelerates normally, the stroke triggering mechanism and the transmission ring are automatically disconnected, and the flexible energy-absorbing component remains in a contracted state, ensuring that the entire usable stroke of the guide rail is not affected, thus improving the operating efficiency of the equipment. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram showing the overall and partially enlarged structure of this utility model;

[0021] Figure 2 This is a partially enlarged structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection between the slider and the rotating rod in this utility model;

[0023] Figure 4 This is a schematic diagram of the rotating rod in this utility model;

[0024] Figure 5 This is a schematic diagram of the stroke triggering mechanism in this utility model;

[0025] Figure 6 This is a structural schematic diagram of the front view of the stroke triggering mechanism in this utility model;

[0026] Figure 7 This is a structural schematic diagram of the stroke triggering mechanism in this utility model from the rear view.

[0027] 1. Guide rail; 2. Slider; 3. Transmission rod; 4. Side plate; 5. Lead screw; 6. Nut block; 7. Flexible energy-absorbing component; 8. Synchronous belt; 9. Transmission ring; 10. Sliding button; 11. Rotating rod; 12. Straight groove; 13. Spiral groove; 14. Ratchet groove one; 15. Ratchet groove two; 16. Elastic pawl; 17. Clamping claw; 18. Elastic component. Detailed Implementation

[0028] like Figure 1-7 As shown, this utility model provides a flexible linear guide rail protection device, including a side plate 4 and a guide rail 1 disposed on the side plate 4. A slider 2 is installed on the guide rail 1. The side plate 4 is used to install the guide rail 1. The guide rail 1 can be installed on the side plate 4 at the position to be used by bolts or any other installation structure. After the guide rail 1 is installed, the slider 2 can be driven by a drive source to slide on the track.

[0029] In order to protect the side plates 4 at both ends of the guide rail 1 and the slider 2 itself, the flexible linear guide rail 1 protection device also includes a rotating rod 11 rotatably mounted on the side plate 4, and a straight groove 12 and a spiral groove 13 connected to each other are opened on the rotating rod 11. The slider 2 is slidably mounted in the straight groove 12 through a sliding button 10. When the slider 2 moves on the guide rail 1 to a position close to the side plate 4, the sliding button 10 slides into the spiral groove 13 and causes the rotating rod 11 to rotate. Here, the spiral groove 13 and the sliding button 10 form a spiral groove 13 guide pin mechanism. At this time, the sliding button 10 is a fixed part, and the rotating rod 11 with the spiral groove 13 is a rotating part. When the sliding button 10 slides from the straight groove 12 into the spiral groove 13, the rotating rod 11 rotates.

[0030] In order to protect the end of the guide rail 1 and the slider 2, when the slider 2 moves to the position near the end of the guide rail 1, the control terminal / PLC will control the slider 2 to decelerate to prevent impact. In this utility model, if the slider 2 does not decelerate when it is close to the end of the guide rail 1, the utility model is provided with a rotating ring rotatably mounted on the side plate 4. The rotating ring is connected to the rotating rod 11 through a stroke triggering mechanism. When the slider 2 is close to the side plate 4 and does not decelerate, the stroke triggering mechanism is connected to the transmission ring 9 and drives the transmission ring 9 to rotate. When the slider 2 is close to the side plate 4 and decelerates, the transmission ring 9 is disconnected from the stroke triggering mechanism. In addition, a transmission member connected to the drive ring is also provided on the side plate 4. A flexible energy-absorbing member 7 is also provided on the transmission member. When the transmission ring 9 rotates, the energy-absorbing member is driven by the transmission member to form a protective action for the side plate 4.

[0031] In other words, when slider 2 moves close to side plate 4 on guide rail 1, if it does not decelerate, the transmission ring 9 will rotate through the stroke trigger mechanism, thereby driving the flexible energy-absorbing component 7 to protect the side plate 4 through the transmission component. In this way, even if slider 2 moves to the end of guide rail 1 without deceleration due to control error, the flexible energy-absorbing component 7 can protect the side plate 4 at the end of guide rail 1, preventing damage to the side plate 4 or slider 2 due to collision. When slider 2 decelerates and approaches the end of guide rail 1, the transmission ring 9 is disconnected from the stroke trigger mechanism. At this time, the transmission ring 9 does not rotate, and the flexible energy-absorbing component 7 does not respond. That is, when slider 2 is working normally, the flexible energy-absorbing component 7 will not invade guide rail 1, thereby preventing the reduction of the available stroke of guide rail 1. Only when the speed of slider 2 approaches the end of guide rail 1 abnormally will the protection of flexible energy-absorbing component 7 be triggered, which has better practicality.

[0032] It should be noted that the flexible energy-absorbing component 7 is one of elastic rubber, hydraulic buffer or damper. When it collides with the slider 2, it effectively absorbs energy and prevents the slider 2 or the side plate 4 at the end of the guide rail 1 from being damaged.

[0033] In one embodiment of this utility model, the stroke triggering mechanism includes a transmission rod 3 rotatably mounted on the side plate 4. An elastic claw 16 is mounted on the transmission rod 3 via a torsion spring, and a ratchet groove 14 is formed on the inner wall of the transmission ring 9 at the position corresponding to the elastic claw 16. The transmission rod 3 is connected to the end of the rotating rod 11. When the slider 2 approaches the guide rail 1 and does not decelerate, the rotating rod 11 rotates because the sliding button 10 slides into the spiral groove 13. If the slider 2 does not decelerate, the rotation speed of the rotating rod 11 will be greater than the rotation speed of the rotating rod 11 when the slider 2 decelerates. At this time, the rotating rod 11 drives the transmission rod 3 to rotate. That is to say, the rotation speed of the transmission rod 3 at this time is also greater than the normal rotation speed. The centrifugal force generated on it is greater than the normal centrifugal force. At this time, the torsion spring is subjected to a larger centrifugal force than normal, the torsion spring deforms, the elastic claw 16 unfolds outward, hooks the engagement position of the ratchet groove 14, thereby driving the transmission ring 9 to rotate, so as to protect the end of the side plate 4 of the guide rail 1 when the slider 2 speed is abnormal.

[0034] Here, it is necessary to meet the following condition: as long as the slider 2 is at a normal speed and close to the side plate 4, the flexible energy-absorbing component 7 will be triggered to protect the end. And with this as the limit, if the slider 2 is below the normal speed, the elastic claw 16 will not connect with the ratchet groove 14. If the slider 2 is greater than or equal to the normal speed, the stroke protection will be triggered.

[0035] In another embodiment of this utility model, the transmission component includes a lead screw 5 rotatably mounted on the side plate 4. The lead screw 5 and the outer surface of the transmission ring 9 are connected by a synchronous belt 8 via a synchronous pulley. A nut block 6 is threaded onto the lead screw 5, and a flexible energy-absorbing component 7 is provided on the nut block 6. When the transmission ring 9 rotates, the lead screw 5 will rotate by the synchronous belt 8, thereby driving the flexible energy-absorbing component 7 through the nut block 6 to protect the end of the guide rail 1.

[0036] In another embodiment of this utility model, the protective device of the flexible linear guide 1 further includes a ratchet groove 2 15 formed on the inner wall surface of the transmission ring 9. The engagement position of the ratchet groove 2 15 is opposite to that of the ratchet groove 14. The transmission rod 3 is provided with a pawl 17 at the position corresponding to the ratchet groove 2 15 by a one-way torsion spring. The end face of the pawl 17 abuts against the engagement position of the ratchet groove 2 15. When a stroke protection is triggered, the slider 2 starts the next operation. When the slider 2 moves away from the guide rail 1 at this time, the pawl 17 pushes the ratchet groove 2 15 to make the drive ring rotate in the opposite direction, thereby restoring the flexible energy-absorbing component 7 to its original position.

[0037] Here, the following situation exists: if the slider 2 is near the end of the guide rail 1 and its speed is in a normal deceleration state, the position of the flexible energy-absorbing component 7 will not move. If the slider 2 is away from the end of the guide rail 1, the pawl 17 will still drive the drive ring to rotate. Here, an elastic component 18 is provided near the maximum stroke position of the lead screw 5. The elastic component 18 is used to limit the position of the nut block 6. That is to say, when the lead screw 5 rotates, it will still drive the nut block 6. However, due to the setting of the elastic component 18, the nut block 6 will always be in contact with the lead screw 5 and will not separate. This allows the flexible energy-absorbing component to protect the end of the guide rail 1 when the lead screw 5 rotates next time.

[0038] It should be noted that, in order to achieve the above effect, the distance between the position of the elastic element 18 and the maximum stroke of the lead screw 5 needs to be less than the width of the nut block 6, so that the nut block 6 will not completely separate from the lead screw 5. The elastic element 18 can be made of rubber or a spring, which can provide elastic force so that the nut block 6 can always be in contact with the lead screw 5.

[0039] It should also be noted that, please refer to Figure 5 and Figure 7 When the slider 2 approaches the guide rail 1 and the speed is abnormal, the rotation of the drive ring at this time will cause the pawl 17 to grind against the ratchet groove 15. The pawl 17 will vibrate repeatedly and pass over the ratchet groove 15. In other words, in this state, the pawl 17 will not affect the rotation of the drive ring.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A flexible linear guide rail protection device, comprising a side plate (4) and a guide rail (1) disposed on the side plate (4), wherein a slider (2) is mounted on the guide rail (1), characterized in that: The flexible linear guide rail protection device also includes: Rotary rod (11) is mounted on side plate (4), and a straight groove (12) and a spiral groove (13) are connected on the rotating rod (11). The slider (2) is slidably mounted in the straight groove (12) through the sliding button (10). When the slider (2) moves on the guide rail (1) to a position close to the side plate (4), the sliding button (10) slides into the spiral groove (13) and rotates the rotating rod (11). The transmission ring (9) is rotatably mounted on the side plate (4), and the transmission ring (9) is connected to the rotating rod (11) through the stroke triggering mechanism. When the slider (2) approaches the side plate (4) and no deceleration action is generated, the stroke triggering mechanism connects to the transmission ring (9) and drives the transmission ring (9) to rotate. When the slider (2) approaches the side plate (4) and a deceleration action is generated, the transmission ring (9) is disconnected from the stroke triggering mechanism. The transmission component is set on the side plate (4) and connected to the drive ring. A flexible energy-absorbing component (7) is also set on the transmission component. When the transmission ring (9) rotates, the flexible energy-absorbing component (7) is driven by the transmission component to form a protective action on the side plate (4).

2. The flexible linear guide rail protection device according to claim 1, characterized in that: The stroke triggering mechanism includes a transmission rod (3) rotatably mounted on the side plate (4), an elastic pawl (16) is mounted on the transmission rod (3) by a torsion spring, and a ratchet groove (14) is opened on the inner wall of the transmission ring (9) at the position corresponding to the elastic pawl (16). The transmission rod (3) is connected to the end of the rotating rod (11) in a transmission connection.

3. The flexible linear guide rail protection device according to claim 2, characterized in that: The transmission component includes a lead screw (5) rotatably mounted on the side plate (4), and a synchronous belt (8) is installed on the outer surface of the lead screw (5) and the transmission ring (9) via a synchronous pulley. A nut block (6) is threaded onto the lead screw (5), and a flexible energy-absorbing component (7) is provided on the nut block (6).

4. The flexible linear guide rail protection device according to claim 3, characterized in that: The flexible linear guide rail protection device also includes a second ratchet groove (15) formed on the inner wall surface of the transmission ring (9). The engagement position of the second ratchet groove (15) is opposite to that of the first ratchet groove (14). The transmission rod (3) is provided with a pawl (17) by rotating a one-way torsion spring at the position corresponding to the second ratchet groove (15). The end face of the pawl (17) abuts against the engagement position of the second ratchet groove (15).

5. A flexible linear guide rail protection device according to claim 3, characterized in that: The lead screw (5) is provided with an elastic element (18) near the maximum stroke position, and the elastic element (18) is used to limit the position of the nut block (6).

6. A flexible linear guide rail protection device according to claim 3, characterized in that: The flexible energy-absorbing component (7) is one of elastic rubber, hydraulic buffer or damper.

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