A noise reduction structure for linear guide rails

Abstract

This utility model belongs to the technical field of noise reduction structure for linear guides, and in particular, it is a noise reduction structure for linear guides. It includes a guide rail body and a slider body slidably connected to the surface of the guide rail body. The surface of the guide rail body has symmetrically formed limit grooves. The surface of the slider body has a limit block fixedly connected to the limit grooves. The surface of the slider body is provided with a pressing mechanism, which includes a central shaft symmetrically arranged on the surface of the slider body. A roller is rotatably connected to the surface of the central shaft. The surface of the slider body has a sliding groove that mates with the central shaft. This utility model can convert sliding friction into rolling friction, reducing friction and noise. Simultaneously, the pressing action on the rollers further reduces vibration, improves stability, and reduces operating noise.

Description

Technical Field

[0001] This utility model belongs to the technical field of noise reduction structure for linear guides, and specifically relates to a noise reduction structure for linear guides. Background Technology

[0002] In modern industrial manufacturing, automation equipment and precision instruments, linear guides are the core components for realizing linear motion. Their performance directly affects the operating accuracy, stability and service life of the equipment. As various industries continue to increase their requirements for equipment operating accuracy, stability and low noise environment, the noise reduction problem of linear guides has received more and more attention.

[0003] In this existing design, the slider and guide rail mostly use sliding friction. This contact method has the drawback of high friction, which not only leads to high running resistance and increased energy consumption, but also accelerates the wear of the guide rail and slider, shortening the service life of the linear guide rail. At the same time, due to the lack of effective clamping and adjustment devices, the gap between the slider and guide rail is difficult to control, which easily generates vibration and noise during operation. This cannot meet the requirements of high-precision equipment for a low-noise operating environment and may even interfere with the precise operation of the equipment and reduce the machining accuracy. Furthermore, the fixed contact pressure cannot adapt to different loads. Under heavy load conditions, it may lead to poor contact between the slider and guide rail, causing greater vibration and noise, and in severe cases, causing equipment failure.

[0004] Therefore, a noise reduction structure for linear guide rails is designed to solve the above problems. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a noise reduction structure for linear guides. This device converts sliding friction into rolling friction, reducing friction and noise. Simultaneously, it applies pressure to the rollers to further reduce vibration, improve stability, and lower operating noise.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction structure for a linear guide rail, comprising a guide rail body and a slider body slidably connected to the surface of the guide rail body. The surface of the guide rail body has symmetrically formed limit grooves. The surface of the slider body has a limit block fixedly connected to the limit groove. The surface of the slider body is provided with a pressing mechanism, which includes a central shaft symmetrically arranged on the surface of the slider body. A roller is rotatably connected to the surface of the central shaft. The surface of the slider body has a first sliding groove that mates with the central shaft. The surface of the slider body is provided with a second slider. The surface of the slider body has a groove 2 that mates with the slider 2. The surface of the slider body has a slider 3 that mates with the slider 3. The surface of the slider 3 has a connecting rod that mates with the slider body. The connecting rod is rotatably connected to the slider body. One end of the connecting rod is fixedly connected to a connecting shaft 1. The surface of the slider 3 has a groove 4 that mates with the connecting shaft 1. The end of the connecting shaft 1 away from the connecting rod is fixedly connected to a connecting shaft 2. The surface of the slider 2 has a groove 5 that mates with the connecting shaft 2. The bottom end of the slider 2 is fixedly connected to a pressure plate.

[0007] As a preferred noise reduction structure for a linear guide rail according to this utility model, the cross-section of the guide rail body is trapezoidal.

[0008] As a preferred noise reduction structure for a linear guide rail according to this utility model, the interior of the guide rail body is provided with a honeycomb-shaped sound-absorbing cavity.

[0009] As a preferred noise reduction structure for a linear guide rail according to this utility model, a pressing block is fixedly connected to the surface of the slider three, the pressing block is slidably connected to the slider body, and a compression spring one is provided on the surface of the slider body, with the two ends of the compression spring one being fixedly connected to the pressing block and the slider two, respectively.

[0010] As a preferred noise reduction structure for a linear guide rail according to this utility model, a compression spring 2 is fixedly connected to the surface of the slider 3, and the end of the compression spring 2 away from the slider 3 is fixedly connected to the slider body.

[0011] As a preferred noise reduction structure for a linear guide rail according to this utility model, the side of the pressure plate near the roller is matched with the shape of the roller.

[0012] As a preferred noise reduction structure for a linear guide rail according to this utility model, it further includes an adaptive preload structure disposed on the surface of the intermediate shaft.

[0013] The adaptive preload structure includes a sleeve rod slidably connected to the intermediate shaft. The top end of the sleeve rod is fixedly connected to the surface of the slider body. A slide rod is slidably connected to the surface of the sleeve rod. The top end of the slide rod is fixedly connected to the slider three. A compression spring three is sleeved on the surface of the sleeve rod. The two ends of the compression spring three are fixedly connected to the slider body and the intermediate shaft, respectively.

[0014] As a preferred noise reduction structure for a linear guide rail according to this utility model, the surface of the limiting block is rotatably connected with a number of ball bearings.

[0015] As a preferred noise reduction structure for a linear guide rail according to this utility model, rubber pads are fixedly connected to both sides of the slider body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The addition of a clamping mechanism in this application transforms sliding friction into rolling friction, reducing friction and noise. Simultaneously, the clamping action on the rollers further reduces vibration, improves stability, reduces operating noise, and ensures that the slider and guide rail always maintain appropriate contact pressure. This adapts to different load conditions and effectively reduces vibration and noise. Furthermore, the addition of an adaptive preload structure automatically adjusts the preload according to different working conditions, maintaining good contact between the slider and guide rail, reducing vibration and noise, improving the accuracy and stability of the linear guide rail, and extending the service life of the guide rail. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0019] Figure 2 This is a schematic diagram of the slider body in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of slider three in this utility model;

[0021] Figure 4 In this utility model Figure 2 Enlarged structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the ball bearing structure in this utility model;

[0023] In the picture:

[0024] 1. Guide rail body; 2. Slider body; 31. Limiting groove; 32. Limiting block;

[0025] 4. Clamping mechanism; 41. Intermediate shaft; 42. Roller; 43. Slide groove one; 44. Slider two; 45. Slide groove two; 46. Slider three; 47. Slide groove three; 48. Connecting rod; 49. Connecting shaft one; 410. Slide groove four; 411. Connecting shaft two; 412. Slide groove five; 413. Pressure plate; 414. Pressing block; 415. Compression spring one; 416. Compression spring two;

[0026] 5. Adaptive preload structure; 51. Sleeve rod; 52. Slide rod; 53. Compression spring three; 54. Ball bearing; 55. Rubber pad. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figure 1 As shown;

[0030] A noise reduction structure for a linear guide rail includes a guide rail body 1 and a slider body 2 that is slidably connected to the surface of the guide rail body 1.

[0031] In this implementation scheme: In the existing design, the slider and guide rail mostly use sliding friction. This contact method has the disadvantage of high friction, which not only leads to high running resistance and increased energy consumption, but also accelerates the wear of the guide rail and slider, shortening the service life of the linear guide rail. At the same time, due to the lack of effective clamping and adjustment devices, the gap between the slider and guide rail is difficult to control, which easily generates vibration and noise during movement, failing to meet the requirements of high-precision equipment for a low-noise operating environment, and may even interfere with the precise operation of the equipment and reduce the processing accuracy. Furthermore, the fixed contact pressure cannot adapt to different loads. Under heavy load conditions, it may lead to poor contact between the slider and guide rail, causing greater vibration and noise, and in severe cases, causing equipment failure. Considering the usage, this problem is obviously a real and difficult problem to solve. Therefore, in order to solve this technical problem, a clamping mechanism 4 and an adaptive pre-tightening structure 5 are added to this application.

[0032] Furthermore:

[0033] like Figures 1 to 3 As shown:

[0034] Based on the above: A noise reduction structure for a linear guide rail includes symmetrically formed limiting grooves 31 on the surface of the guide rail body 1, a limiting block 32 fixedly connected to the surface of the slider body 2 to cooperate with the limiting grooves 31, a pressing mechanism 4 on the surface of the slider body 2, the pressing mechanism 4 including a central shaft 41 symmetrically arranged on the surface of the slider body 2, a roller 42 rotatably connected to the surface of the central shaft 41, a first sliding groove 43 cooperating with the central shaft 41 on the surface of the slider body 2, a second slider 44 on the surface of the slider body 2, and a second sliding groove 45 cooperating with the second slider 44 on the surface of the slider body 2. A slider 3 46 is symmetrically arranged on the surface of the slider body 2. A groove 3 47 that mates with the slider 3 46 is opened on the surface of the slider 3 46. A connecting rod 48 is symmetrically arranged on the surface of the slider 3 46 and is rotatably connected to the slider body 2. A connecting shaft 1 49 is fixedly connected to one end of the connecting rod 48. A groove 410 that mates with the connecting shaft 1 49 is opened on the surface of the slider 3 46. A connecting shaft 2 411 is fixedly connected to the end of the connecting shaft 1 49 away from the connecting rod 48. A groove 5 412 that mates with the connecting shaft 2 411 is symmetrically opened on the surface of the slider 2 44. A pressure plate 413 is fixedly connected to the bottom end of the slider 2 44.

[0035] In this implementation scheme: the limiting groove 31 on the surface of the guide rail body 1 cooperates with the limiting block 32 of the slider body 2 to restrict the movement direction of the slider body 2. When the slider body 2 moves, the roller 42 adapts to the surface of the guide rail body 1, driving the intermediate shaft 41 to slide in the first slide groove 43. The roller 42 contacts and rolls with the guide rail body 1. At the same time, the operator manipulates the third slider 46 to slide upward on the surface of the slider body 2 through the third slide groove 47, driving the fourth slide groove 410 to move, thereby driving the first connecting shaft 49 to slide on the surface of the fourth slide groove 410. The connecting rod 48 rotates, and through the transmission of the connecting rod 48 and the connecting shaft 411, the connecting shaft 411 slides within the slide groove 412. This causes the connecting shaft 411 to press the slider 44 downward, which in turn causes the pressure plate 413 to move downward. Ultimately, the pressure plate 413 presses the roller 42, reducing the gap and vibration between the slider body 2 and the guide rail body 1. The roller 42 converts sliding friction into rolling friction, reducing friction and noise. The pressing effect of the pressure plate 413 further reduces vibration, improves stability, and reduces operating noise.

[0036] Furthermore:

[0037] like Figure 1 and Figure 2 As shown:

[0038] In an optional embodiment, the cross-section of the guide rail body 1 is trapezoidal.

[0039] In this embodiment, the guide rail body 1 adopts a trapezoidal cross section, which can distribute the load over a larger area when under stress. The trapezoidal structure can make the contact stress distribution between the slider body 2 and the guide rail body 1 more uniform. The uniform stress distribution avoids local stress concentration, reduces vibration and noise caused by uneven stress, and improves the load-bearing capacity and service life of the guide rail.

[0040] Furthermore:

[0041] In an optional embodiment, a honeycomb-shaped sound-absorbing cavity is provided inside the guide rail body 1.

[0042] In this embodiment, the honeycomb sound-absorbing cavity inside the guide rail body 1 utilizes the multiple reflections, refractions, and dissipations of sound waves within the honeycomb structure to effectively absorb the noise generated during the operation of the slider body 2, thereby reducing noise propagation from the structure of the guide rail body 1 itself and improving the working environment of the equipment.

[0043] Furthermore:

[0044] like Figure 3 As shown:

[0045] In an optional embodiment, a pressing block 414 is fixedly connected to the surface of slider three 46, and the pressing block 414 is slidably connected to slider body 2. A compression spring 415 is provided on the surface of slider body 2, and the two ends of the compression spring 415 are fixedly connected to the pressing block 414 and slider two 44 respectively.

[0046] In this embodiment: the pressing block 414 on slider 3 46 slides on slider body 2. When the pressing block 414 is subjected to external force, the pressing block 414 drives slider 3 46 to move downward, which in turn drives the pressure plate 413 to move upward, releasing the pressure plate 413 on the roller 42. At this time, the compression spring 1 415 is compressed. When the operator releases the pressing block 414, the compression spring 1 415 returns to its original state, driving the pressing block 414 and slider 3 46 to move upward, causing the pressure plate 413 to move downward again to press the roller 42. The pressure of the pressure plate 413 is adjusted by the elasticity of the compression spring 1 415. The pressure of the pressure plate 413 on the roller 42 is automatically adjusted according to the actual working conditions to ensure that the slider body 2 and the guide rail body 1 always maintain a suitable contact pressure, which can reduce vibration and noise and adapt to different load conditions.

[0047] Furthermore:

[0048] like Figure 3 As shown:

[0049] In an optional embodiment, a compression spring 416 is fixedly connected to the surface of slider 3 46, and the end of compression spring 416 away from slider 3 46 is fixedly connected to slider body 2.

[0050] In this embodiment: one end of the compression spring 416 is connected to the slider 46 and the other end is connected to the slider body 2. It provides a restoring force for the slider 46. At the same time, during the movement of the slider body 2, it absorbs and buffers the vibration caused by the movement of the slider body 2, reduces the vibration transmission during the movement of the slider body 2, further reduces noise, and helps the slider 46 to return to the appropriate position after the force changes, maintaining the stable operation of the pressing mechanism 4.

[0051] Furthermore:

[0052] like Figure 3 As shown:

[0053] In an alternative embodiment, the side of the pressure plate 413 near the roller 42 is shaped to match the roller 42.

[0054] In this embodiment, the side of the pressure plate 413 near the roller 42 is matched with the shape of the roller 42. When the pressure plate 413 is pressed down under the action of the pressing mechanism 4, it can fit tightly against the roller 42, ensuring that uniform pressure is applied to the roller 42, so that the roller 42 can better exert the advantages of rolling friction, ensuring that the roller 42 rolls stably, reducing vibration and noise caused by poor contact, and improving the stability and reliability of the entire system.

[0055] Furthermore:

[0056] like Figure 3 and Figure 4 As shown:

[0057] In an optional embodiment, an adaptive preload structure 5 is also included on the surface of the intermediate shaft 41;

[0058] The adaptive preload structure 5 includes a sleeve rod 51 that is slidably connected to the intermediate shaft 41. The top end of the sleeve rod 51 is fixedly connected to the surface of the slider body 2. A slide rod 52 is slidably connected to the surface of the sleeve rod 51. The top end of the slide rod 52 is fixedly connected to the slider 46. A compression spring 53 is sleeved on the surface of the sleeve rod 51. The two ends of the compression spring 53 are fixedly connected to the slider body 2 and the intermediate shaft 41, respectively.

[0059] In this embodiment: the sleeve rod 51 is slidably connected to the intermediate shaft 41, the slide rod 52 slides on the sleeve rod 51 and connects to the slider three 46, and the compression spring three 53 provides preload. When the load on the slider body 2 changes or the motion state changes, the compression spring three 53 compresses or extends, causing the intermediate shaft 41 to slide on the surface of the sleeve rod 51, automatically adjusting the position of the intermediate shaft 41 on the surface of the sleeve rod 51, realizing adaptive adjustment of the preload. The preload can be automatically adjusted according to different working conditions, so that the slider body 2 and the guide rail body 1 maintain a good contact state, reduce vibration and noise, improve the accuracy and stability of the guide rail body 1, and extend the service life.

[0060] Furthermore:

[0061] like Figure 5 As shown:

[0062] In an optional embodiment, a plurality of balls 54 are rotatably connected to the surface of the limiting block 32.

[0063] In this embodiment, the ball bearings 54 on the surface of the limiting block 32 roll when the slider body 2 moves, converting the sliding friction between the limiting block 32 and the limiting groove 31 into rolling friction, reducing the friction between the limiting block 32 and the limiting groove 31, reducing the vibration and noise generated by friction, and at the same time reducing wear, improving the motion accuracy and service life of the guide rail body 1.

[0064] Furthermore:

[0065] like Figure 5 As shown:

[0066] In an optional embodiment, rubber pads 55 are fixedly connected to both sides of the slider body 2.

[0067] In this embodiment, the rubber pads 55 on both sides of the slider body 2 are elastic. When the slider body 2 collides with other components or is subjected to lateral force, the rubber pads 55 absorb the impact force through their own elastic deformation, reduce the noise and vibration generated by the collision, protect the slider body 2 and other components, and improve the safety and stability of the equipment operation. At the same time, the rubber pads 55 can also play a certain role in buffering and shock absorption, reducing the noise generated by vibration transmission.

[0068] Working principle: When the slider body 2 moves, the roller 42 is preloaded by the compression spring 53. When the load on the slider body 2 changes or the motion state changes, the compression spring 53 is compressed or extended, causing the intermediate shaft 41 to slide on the surface of the sleeve 51. The position of the intermediate shaft 41 on the surface of the sleeve 51 is automatically adjusted, thus adapting to the surface of the guide rail body 1. The intermediate shaft 41 slides and rolls in the first groove 43. The pressing block 414 on the slider 3 46 can slide on the slider body 2. When pressed, it causes the slider 3 46 to move downward, causing the pressure plate 413 to move upward to release the pressure on the roller 42. At this time, the compression spring 415 is compressed. After the pressing block 414 is released, the compression spring 415 returns to its original state, causing the pressing block 414 and the slider 46 to move upward. The slider 46 slides upward on the surface of the slider body 2 through the slide groove 47, causing the slide groove 410 to move, so that the connecting shaft 49 slides on the surface of the slide groove 410, thereby causing the connecting rod 48 to rotate. Through the transmission of the connecting rod 48 and the connecting shaft 411, the connecting shaft 411 slides in the slide groove 412, pressing the slider 44 downward, causing the pressure plate 413 to move downward, and finally pressing the roller 42, reducing the gap and vibration between the slider body 2 and the guide rail body 1, and realizing the adjustment of the pressure of the pressure plate 413.

[0069] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A noise reduction structure for a linear guide rail, comprising a guide rail body (1) and a slider body (2) slidably connected to the surface of the guide rail body (1), characterized in that: The guide rail body (1) has symmetrically formed limiting grooves (31) on its surface. The slider body (2) has a limiting block (32) fixedly connected to the limiting groove (31) and a pressing mechanism (4) on its surface. The pressing mechanism (4) includes an intermediate shaft (41) symmetrically arranged on the surface of the slider body (2). A roller (42) is rotatably connected to the surface of the intermediate shaft (41). The slider body (2) has a first sliding groove (43) that mates with the intermediate shaft (41). The slider body (2) has a second slider (44) on its surface. The slider body (2) has a second sliding groove (45) that mates with the second slider (44). The slider body (2) has a third slider symmetrically arranged on its surface. (46) The surface of the slider body (2) is provided with a groove three (47) that cooperates with the slider three (46). The surface of the slider three (46) is symmetrically provided with connecting rods (48), and the connecting rods (48) are rotatably connected to the slider body (2). One end of the connecting rod (48) is fixedly connected to a connecting shaft one (49). The surface of the slider three (46) is provided with a groove four (410) that cooperates with the connecting shaft one (49). The end of the connecting shaft one (49) away from the connecting rod (48) is fixedly connected to a connecting shaft two (411). The surface of the slider two (44) is symmetrically provided with a groove five (412) that cooperates with the connecting shaft two (411). The bottom end of the slider two (44) is fixedly connected to a pressure plate (413).

2. The noise reduction structure for the linear guide rail according to claim 1, characterized in that: The cross-section of the guide rail body (1) is trapezoidal.

3. The noise reduction structure for linear guide rails according to claim 1, characterized in that: The guide rail body (1) is provided with a honeycomb sound-absorbing cavity inside.

4. The noise reduction structure for linear guide rails according to claim 1, characterized in that: A pressing block (414) is fixedly connected to the surface of the slider three (46). The pressing block (414) is slidably connected to the slider body (2). A compression spring one (415) is provided on the surface of the slider body (2). The two ends of the compression spring one (415) are fixedly connected to the pressing block (414) and the slider two (44) respectively.

5. The noise reduction structure for linear guide rails according to claim 1, characterized in that: A compression spring 2 (416) is fixedly connected to the surface of the slider 3 (46), and the end of the compression spring 2 (416) away from the slider 3 (46) is fixedly connected to the slider body (2).

6. The noise reduction structure for the linear guide rail according to claim 1, characterized in that: The side of the pressure plate (413) near the roller (42) is matched with the shape of the roller (42).

7. The noise reduction structure for linear guide rails according to claim 1, characterized in that: It also includes an adaptive preload structure (5) disposed on the surface of the intermediate shaft (41); The adaptive preload structure (5) includes a sleeve rod (51) slidably connected to the intermediate shaft (41). The top end of the sleeve rod (51) is fixedly connected to the surface of the slider body (2). A slide rod (52) is slidably connected to the surface of the sleeve rod (51). The top end of the slide rod (52) is fixedly connected to the slider three (46). A compression spring three (53) is sleeved on the surface of the sleeve rod (51). The two ends of the compression spring three (53) are fixedly connected to the slider body (2) and the intermediate shaft (41) respectively.

8. The noise reduction structure for the linear guide rail according to claim 1, characterized in that: The surface of the limiting block (32) is rotatably connected with several ball bearings (54).

9. The noise reduction structure for linear guide rails according to claim 1, characterized in that: Rubber pads (55) are fixedly connected to both sides of the slider body (2).

Images