Roller type linear guide rail pair

Abstract

The invention relates to a pin roller type linear guide rail pair, and relates to the technical field of linear guide rail pairs, the pin roller type linear guide rail pair comprises a sliding block assembly and a guide rail, the sliding block assembly is installed on the guide rail, the sliding block assembly comprises a sliding block body, a pin roller structure and an end cover, the pin roller structure comprises a plurality of pin rollers and a retainer, the retainer is installed on the sliding block body, the multiple rollers are installed on the retainer, the end covers are installed at the two ends of the sliding block body, reverse grooves used for changing the rolling direction of the rollers are formed in the end covers, and buffer structures are arranged in the reverse grooves and used for buffering the rollers. The reverser has the effect of reducing abrasion between the balls and the inner side wall of the reverser.

Description

Technical Field

[0001] The present application relates to the field of linear guide technology, and in particular to a roller type linear guide. Background Art

[0002] As a key mechanical component, linear guides are widely used in various mechanical equipment, especially in situations where precise linear motion is required. This type of device can not only improve the operating efficiency of the equipment, but also ensure the accuracy of the operation. At present, linear guides on the market are mainly divided into two categories: ball type and roller type. Ball type guides are favored for their low friction resistance and smooth operation, while roller type guides are particularly suitable for heavy loads and high-precision applications due to their higher load capacity and rigidity. In the design of roller type guides, in order to achieve the cyclic motion of the roller, a reverser is usually installed at both ends of the slider assembly, and a reverse groove is provided inside the reverser for changing the rolling direction of the roller. Specifically, a common method includes using an integrated reverser to form a reverse groove through precision machining; another method is to split the reverser into multiple parts and form a reverse groove by splicing. In addition, some designs will add a lubrication system to reduce the friction between the roller and the inner wall of the reverser. However, the above-mentioned existing roller type guides have some shortcomings in practical applications. Especially when the roller is turning through the reverse groove, the contact friction between the roller and the inner wall of the reverser is large, which can easily lead to wear of the roller and the inner wall of the reverser, thereby affecting the service life and performance stability of the guide pair. Summary of the invention

[0003] In order to reduce the wear between the ball and the inner wall of the reverser, the present application provides a roller type linear guide pair.

[0004] The present application provides a roller type linear guide pair adopting the following technical solution: A roller type linear guide pair includes a slider assembly and a guide rail, wherein the slider assembly is mounted on the guide rail, the slider assembly includes a slider body, a roller structure and an end cover, the roller structure includes a plurality of rollers and a retaining frame, the retaining frame is mounted on the slider body, a plurality of rollers are mounted on the retaining frame, the end covers are mounted at both ends of the slider body, a reverse groove for changing the rolling direction of the rollers is opened on the end cover, a buffer structure is arranged in the reverse groove, and the buffer structure is used for buffering the rollers.

[0005] By adopting the above technical solution, the setting of the buffer structure allows the roller to be buffered when entering the reverse groove, reducing the hard collision between the roller and the inner wall of the reverse groove, thereby reducing wear; the buffer structure set in the reverse groove can absorb part of the impact energy, improve the smoothness and stability of the roller during the turning process, and thereby improve the service life and operating performance of the entire guide rail pair.

[0006] In a specific possible implementation scheme, the buffer structure includes a buffer sheet, the shape of the buffer sheet corresponds to the buffer groove, limiting blocks are arranged at both ends of the buffer sheet, and limiting grooves are provided at both ends of the reverse groove corresponding to the limiting blocks.

[0007] By adopting the above technical solution, the buffer sheet can effectively reduce the impact of the roller in the reverse groove, reduce noise and vibration, and improve running stability. The design of the limit block and the limit groove ensures the stability and reliability of the buffer sheet in the reverse groove, prevents the buffer sheet from shifting or falling off during high-speed movement, and further enhances the stability and service life of the system.

[0008] In a specific possible implementation scheme, a buffer spring is further included. The limit spring is installed in the limit groove, one end of the limit spring is connected to the inner side wall of the limit groove, and the other end of the limit spring is connected to the limit block.

[0009] By adopting the above technical solution, the setting of the buffer spring enables the limit block to produce elastic deformation when impacted by the roller, effectively absorb the impact energy, reduce the hard collision between the roller and the inner wall of the reverse groove, thereby extending the service life of the roller and the reverse groove; one end of the limit spring is connected to the inner wall of the limit groove, and the other end is connected to the limit block, ensuring the reset ability of the limit block after being impacted, and further ensuring the stability and reliability of the roller in the reverse groove.

[0010] In a specific feasible implementation scheme, an oil storage chamber is provided in the reverser, a mounting groove is provided on the reverser, an oil inlet nozzle is provided in the mounting groove, the oil inlet nozzle is connected to the oil storage chamber, a fiber layer is provided between the buffer plate and the reverse groove, an oil absorption rope is provided on the fiber layer, the oil absorption rope extends into the oil storage chamber, and an oil outlet hole is provided on the buffer plate.

[0011] By adopting the above technical solution, an oil storage chamber is opened inside the reverser of the roller type linear guide pair, and an oil inlet nozzle is set to connect with the oil storage chamber, which can ensure the effective supply of lubricating oil, reduce the friction between the roller and the inner wall of the reverser, thereby reducing wear and extending the service life. At the same time, a fiber layer is set between the buffer sheet and the reverse groove, and the oil absorption rope on the fiber layer extends into the oil storage chamber, further ensuring the uniform distribution of the lubricating oil and enhancing the lubrication effect. The oil outlet hole opened on the buffer sheet helps to quickly discharge the lubricating oil, improve the lubrication efficiency, reduce the impact of the roller during the steering process, and improve the operating stability and reliability of the guide pair.

[0012] In a specific possible implementation manner, the reverse groove is configured to be in an arc shape.

[0013] By adopting the above technical solution, the arc-shaped reversing groove can better adapt to the rolling path of the roller, reduce the impact force of the roller during the turning process, thereby reducing the contact friction between the roller and the reverser and extending the service life. At the same time, the arc-shaped design makes the movement of the roller in the reverser smoother, improving the running stability and accuracy of the guide pair.

[0014] In a specific possible implementation mode, the reverser is provided with a plurality of oil holes, the oil holes are provided through the side wall of the reverser, and the plurality of oil holes are dispersedly installed on the reverser.

[0015] By adopting the above technical solution, the several oil holes on the reverser can effectively improve the uniformity of lubricating oil distribution, reduce the friction between the roller and the inner wall of the reverser, thereby reducing wear and extending the service life, while improving the running stability and reliability of the guide pair. In a specific possible implementation scheme, a first accommodating cavity, a second accommodating cavity, a first rolling groove and a second rolling groove are opened in the slider body, and the retaining frame includes a first sleeve and a second sleeve, the first sleeve is installed in the first accommodating cavity, and the second sleeve is installed in the second accommodating cavity, and the roller can roll in the first sleeve and the first rolling groove and the second sleeve and the second rolling groove.

[0016] By adopting the above technical solution, the first accommodating cavity and the second accommodating cavity opened in the slider body can effectively fix the first sleeve and the second sleeve, ensuring the stable rolling of the roller in the first rolling groove and the second rolling groove, thereby improving the load-bearing capacity and rigidity of the entire guide rail pair, while reducing the wear between the roller and the guide rail and extending the service life.

[0017] In a specific possible implementation manner, it further includes a dustproof sheet and a sealing sheet, wherein the dustproof sheet is installed on the inner side of the slider body, and the sealing sheet is installed on the bottom surface of the slider body.

[0018] By adopting the above technical solution, the dustproof sheet can effectively prevent dust from entering the interior of the slider, reduce wear and failure caused by dust, and improve the service life and reliability of the guide pair; the sealing sheet can effectively prevent lubricating oil leakage, ensure sufficient lubrication inside the guide pair, reduce friction resistance, and extend the service life of the guide pair.

[0019] In a specific possible implementation manner, it further comprises an oil scraper blade, wherein two oil scrapers are provided and the two oil scrapers are respectively mounted on the outer sides of the end covers at both ends.

[0020] By adopting the above technical solution, two oil scrapers are arranged on the outer side surfaces of the end covers of the slider assembly of the roller type linear guide pair, which can effectively remove dust and impurities brought up when the slider assembly moves on the guide rail, prevent these impurities from entering the interior of the slider and affecting the normal operation of the roller, thereby improving the service life and operational reliability of the guide pair.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of the buffer structure allows the roller to be buffered when entering the reverse groove, reducing the hard collision between the roller and the inner wall of the reverse groove, thereby reducing wear; the buffer structure set in the reverse groove can absorb part of the impact energy, improve the smoothness and stability of the roller during the turning process, and thus improve the service life and operating performance of the entire guide pair; 2. The setting of the buffer spring enables the limit block to produce elastic deformation when impacted by the roller, effectively absorbs the impact energy, reduces the hard collision between the roller and the inner wall of the reverse groove, and thus prolongs the service life of the roller and the reverse groove; One end of the limit spring is connected to the inner wall of the limit groove, and the other end is connected to the limit block, which ensures the reset ability of the limit block after impact, and further ensures the stability and reliability of the roller in the reverse groove; 3. An oil storage chamber is provided inside the reverser of the roller type linear guide pair, and an oil inlet nozzle is provided to connect with the oil storage chamber, which can ensure the effective supply of lubricating oil, reduce the friction between the roller and the inner wall of the reverser, thereby reducing wear and extending the service life. At the same time, a fiber layer is provided between the buffer sheet and the reverse groove, and the oil absorption rope on the fiber layer extends into the oil storage chamber, further ensuring the uniform distribution of the lubricating oil and enhancing the lubrication effect. The oil outlet hole provided on the buffer sheet helps to quickly discharge the lubricating oil, improve the lubrication efficiency, reduce the impact of the roller during the steering process, and improve the operating stability and reliability of the guide pair. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an exploded schematic diagram of an embodiment of the present application.

[0023] Figure 2 Schematic diagram of the structure of the roller in the embodiment of the present application.

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of part A.

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of part B.

[0026] Figure 5 This is the front view of the reverser.

[0027] Figure 6 for Figure 5 Cross-sectional view along the AA direction.

[0028] Figure 7 It is a structural schematic diagram of the roller structure installed in the slider body.

[0029] Explanation of the reference numerals: 1. Slider assembly; 2. Guide rail; 3. Slider body; 31. First accommodating chamber; 32. Second accommodating chamber; 33. First rolling groove; 34. Second rolling groove; 4. Roller structure; 41. Roller; 42. Retaining frame; 421. First sleeve; 422. Second sleeve; 43. Reverser; 431. Oil storage chamber; 432. Mounting groove; 433. Oil inlet nozzle; 434. Limiting groove; 435. Reversing groove; 5. Buffer structure; 51. Buffer sheet; 511. Oil outlet hole; 52. Buffer spring; 53. Limiting block; 6. Oil scraper; 7. Fiber layer; 8. Oil absorption rope. DETAILED DESCRIPTION

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The embodiment of the present application discloses a roller type linear guide pair.

[0032] like Figure 1As shown, the roller 41 type linear guide 2 includes a slider assembly 1 and a guide 2, the slider assembly 1 is installed on the guide 2, the slider assembly 1 includes a slider body 3, a roller 41 structure 4 and an end cover, the roller 41 structure 4 includes a plurality of rollers 41, a retaining frame 42 and a deflector 43, the retaining frame 42 is installed on the slider body 3, a plurality of rollers 41 are installed on the retaining frame 42, the deflector 43 is installed at both ends of the retaining frame 42, a reversing groove 435 for changing the rolling direction of the roller 41 is opened on the deflector 43, a buffer structure 5 is arranged in the reversing groove 435, the buffer structure 5 is used for the roller 41 to buffer, and the end covers are installed at both ends of the slider body 3, so as to reduce the friction between the roller 41 and the inner wall of the deflector 43 and extend the service life of the guide 2.

[0033] The slider assembly 1 includes a slider assembly 1 and a guide rail 2. The slider assembly 1 is mounted on the guide rail 2. The slider assembly 1 includes a slider body 3, a roller structure 4 and an end cover. The roller 41 structure 4 includes a plurality of rollers 41, a retainer 42 and a deflector 43. The retainer 42 is mounted on the slider body 3. A plurality of rollers 41 are mounted on the retainer 42. The deflector 43 is mounted at both ends of the slider body 3. A reversing groove 435 for changing the rolling direction of the roller 41 is provided on the deflector 43. A buffer structure 5 is provided in the reversing groove 435. The buffer structure 5 is used for the roller 41 to perform buffering.

[0034] like Figure 3 and Figure 4 As shown, the reverser 43 includes a reverse groove 435 and a buffer structure 5. The reverse groove 435 can be made of stainless steel material, which has good wear resistance and corrosion resistance. The buffer structure 5 includes a buffer sheet 51, the shape of the buffer sheet 51 corresponds to the reverse groove 435, and limiting blocks 53 are set at both ends of the buffer sheet 51. Limiting grooves 434 are opened at both ends of the reverse groove 435 corresponding to the limiting blocks 53. The buffer sheet 51 can be made of elastic material, such as rubber or polyurethane, so that it can play a shock-absorbing role when the roller 41 enters the reverse groove 435, reduce the impact force, and thus reduce the wear of the roller 41 and the inner wall of the reverse groove 435. The limiting block 53 can be made of metal material, such as aluminum alloy, which has sufficient strength and hardness to ensure the stable positioning of the buffer sheet 51 in the reverse groove 435.

[0035] The connection between the limit block 53 and the limit groove 434 can be made by a threaded connection or a snap connection. The threaded connection has a higher fixing strength, but the assembly is more complicated; the snap connection is more convenient, but the fixing strength is slightly lower. Which connection method to choose can be determined according to actual needs. For example, in the case where the buffer sheet 51 needs to be replaced frequently, a snap connection can be selected, and in the case where long-term stable operation is required, a threaded connection can be selected.

[0036] The buffer structure 5 may further include a buffer spring 52, which is installed in the limiting groove 434, one end of which is connected to the inner wall of the limiting groove 434, and the other end of which is connected to the limiting block 53. The buffer spring 52 may be a coil spring, which has good elasticity and durability. The selection of the coil spring may be adjusted according to the weight and speed of the roller 41 to achieve the best buffering effect. In addition, a conical spring may be used, and the compression force of the conical spring increases with the increase of the compression distance, which may provide a better buffering effect when the roller 41 moves at high speed.

[0037] like Figure 5 and Figure 6 As shown, specifically, an oil storage chamber 431 can also be opened in the reverser 43, a mounting groove 432 is provided on the reverser 43, an oil inlet nozzle 433 is provided in the mounting groove 432, and the oil inlet nozzle 433 is connected to the oil storage chamber 431. The oil storage chamber 431 can be made of aluminum alloy material, which has good corrosion resistance and pressure resistance. The oil inlet nozzle 433 can be made of copper alloy material, which has good corrosion resistance and sealing. A fiber layer 7 is provided between the buffer sheet 51 and the reverse groove 435, and an oil absorption rope 8 is provided on the fiber layer 7. The oil absorption rope 8 extends into the oil storage chamber 431, and an oil outlet hole 511 is opened on the buffer sheet 51. The fiber layer 7 can be made of cotton or nylon material, which has good oil absorption and air permeability. The oil absorption rope 8 can be made of slender cotton thread or nylon thread, which has good oil absorption and oil conductivity. The oil outlet hole 511 can be circular or elliptical, and the diameter can be adjusted according to actual needs to ensure that the lubricating oil is evenly distributed on the surface of the buffer sheet 51.

[0038] The shape of the reversing groove 435 can be set to an arc shape. The arc design can better adapt to the movement trajectory of the roller 41, reduce the contact area between the roller 41 and the inner wall of the reversing device 43, and thus reduce the friction. The curvature radius of the arc reversing device 43 can be adjusted according to the diameter and movement speed of the roller 41 to achieve the best movement effect. For example, for a roller 41 with a smaller diameter and a faster speed, a smaller curvature radius can be used; for a roller 41 with a larger diameter and a slower speed, a larger curvature radius can be used.

[0039] The deflector 43 may also be provided with a plurality of oil holes, which are arranged through the side wall of the deflector 43 and are dispersedly installed on the deflector 43. The oil holes may be round or square, and the diameter may be adjusted according to actual needs to ensure that the lubricating oil is evenly distributed on the inner wall of the deflector 43. The number and position of the oil holes may be adjusted according to the movement trajectory and speed of the roller 41 to achieve the best lubrication effect. For example, for occasions that require long-term continuous operation, the number and density of the oil holes may be appropriately increased to ensure sufficient supply of lubricating oil.

[0040] like Figure 7 As shown, the slider body 3 is provided with a first accommodating cavity 31, a second accommodating cavity 32, a first rolling groove 33 and a second rolling groove 34, and the retainer 42 includes a first sleeve 421 and a second sleeve 422. The first sleeve 421 is installed in the first accommodating cavity 31, and the second sleeve 422 is installed in the second accommodating cavity 32. The roller 41 can roll in the first sleeve 421 and the first rolling groove 33 as well as the second sleeve 422 and the second rolling groove 34. The first accommodating cavity 31 and the second accommodating cavity 32 can be rectangular or circular, and the depth can be adjusted according to the length and number of the roller 41. The first rolling groove 33 and the second rolling groove 34 can be V-shaped or U-shaped, and the width and depth can be adjusted according to the diameter and number of the roller 41. The first sleeve 421 and the second sleeve 422 can be made of stainless steel, which has good wear resistance and corrosion resistance. The roller 41 can roll freely in the first sleeve 421 and the first rolling groove 33 as well as the second sleeve 422 and the second rolling groove 34 to achieve efficient linear motion.

[0041] In other embodiments, a dustproof sheet may be installed on the inner side of the slider body 3, and a sealing sheet may be installed on the bottom surface of the slider body 3. The dustproof sheet may be made of a flexible material, such as silicone or rubber, and has good sealing and wear resistance. The sealing sheet may be made of a hard material, such as plastic or metal, and has good sealing and pressure resistance. The function of the dustproof sheet and the sealing sheet is to prevent dust and impurities from entering the slider body 3, thereby extending the service life of the slider assembly 1. The thickness and shape of the dustproof sheet and the sealing sheet can be adjusted according to actual needs to ensure the best sealing effect.

[0042] Oil scrapers 6 may also be installed on the outer surfaces of the end caps at both ends of the slider body 3, and two oil scrapers 6 are provided. The oil scrapers 6 may be made of metal materials, such as aluminum alloy or stainless steel, which have good wear resistance and corrosion resistance. The function of the oil scrapers 6 is to scrape off excess lubricating oil when the slider assembly 1 moves to prevent the lubricating oil from contaminating the guide rail 2 and other components. The angle and shape of the oil scrapers 6 can be adjusted according to the movement trajectory and speed of the roller 41 to achieve the best oil scraping effect.

[0043] The implementation principle of the roller 41 type linear guide 2 pair in the embodiment of the present application is as follows: by setting a buffer structure 5 in the reverser 43, the roller 41 is buffered during the turning process in the reverser 43, reducing the friction between the roller 41 and the inner wall of the reverser 43, thereby reducing the energy consumption of the system and extending the service life of the guide 2 pair. At the same time, the oil storage cavity 431 is set in the reverser 43, so that the lubricating oil can be evenly distributed between the buffer sheet 51 and the reverse groove 435, further reducing the friction between the roller 41 and the inner wall of the reverser 43, thereby reducing the energy consumption of the system and extending the service life of the guide 2 pair. This design not only improves the performance of the roller 41 type linear guide 2 pair, but also enhances its reliability and durability. The first mounting groove 432, the second mounting groove 432, the first rolling groove 33 and the second rolling groove 34 inside the slider body 3 enable the roller 41 to roll in the first sleeve 421 and the first rolling groove 33 and the second sleeve 422 and the second rolling groove 34, realizing the circular motion of the roller 41. The provision of the end covers enables both ends of the slider body 3 to be effectively closed and sealed, preventing dust and other impurities from entering the slider body 3, thereby ensuring the normal operation of the two guide rails.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A roller type linear guide pair, comprising a slider assembly (1) and a guide rail (2), wherein the slider assembly (1) is mounted on the guide rail (2), and characterized in that: The slider assembly (1) comprises a slider body (3) and a roller structure (4), wherein the roller structure (4) comprises a plurality of rollers (41), a retaining frame (42) and a deflector (43), wherein the retaining frame (42) is mounted on the slider body (3), a plurality of rollers (41) are mounted on the retaining frame (42), and the deflector (43) is mounted at both ends of the slider body (3), and a reversing groove (435) for changing the rolling direction of the roller (41) is provided on the deflector (43), and a buffer structure (5) is provided in the reversing groove (435), and the buffer structure (5) is used for buffering the roller (41).

2. The roller type linear guide pair according to claim 1, characterized in that: The buffer structure (5) comprises a buffer sheet (51), the shape of the buffer sheet (51) being arranged corresponding to the buffer groove, limiting blocks (53) being arranged at both ends of the buffer sheet (51), and limiting grooves (434) being arranged at both ends of the reverse groove (435) corresponding to the limiting blocks (53).

3. The roller type linear guide pair according to claim 2, characterized in that: It also includes a buffer spring (52), the limit spring being installed in the limit groove (434), one end of the limit spring being connected to the inner side wall of the limit groove (434), and the other end of the limit spring being connected to the limit block (53).

4. The roller type linear guide pair according to claim 2, characterized in that: An oil storage chamber (431) is provided in the deflector (43), a mounting groove (432) is provided on the deflector (43), an oil inlet nozzle (433) is provided in the mounting groove (432), the oil inlet nozzle (433) is connected to the oil storage chamber (431), a fiber layer (7) is provided between the buffer sheet (51) and the deflector groove (435), an oil suction rope (8) is provided on the fiber layer (7), the oil suction rope (8) extends into the oil storage chamber (431), and an oil outlet hole (511) is provided on the buffer sheet (51).

5. The roller type linear guide pair according to claim 2, characterized in that: The reverse groove (435) is configured to be in an arc shape.

6. The roller type linear guide pair according to claim 1, characterized in that: The deflector (43) is provided with a plurality of oil holes, the oil holes being arranged through the side wall of the deflector (43), and the plurality of oil holes being installed in a dispersed manner on the deflector (43).

7. The roller type linear guide pair according to claim 1, characterized in that: The slider body (3) is provided with a first accommodating cavity (31), a second accommodating cavity (32), a first rolling groove (33) and a second rolling groove (34); the retaining frame (42) comprises a first sleeve (421) and a second sleeve (422); the first sleeve (421) is installed in the first accommodating cavity (31), and the second sleeve (422) is installed in the second accommodating cavity (32); the roller (41) can roll in the first sleeve (421) and the first rolling groove (33) and in the second sleeve (422) and the second rolling groove (34).

8. The roller type linear guide pair according to claim 1, characterized in that: It also comprises a dustproof sheet and a sealing sheet, wherein the dustproof sheet is installed on the inner side of the slider body (3), and the sealing sheet is installed on the bottom surface of the slider body (3).

9. The roller type linear guide pair according to claim 1, characterized in that: It also includes an oil scraper blade (6), two of which are provided, and the two oil scrapers (6) are respectively mounted on the outer sides of the end covers at both ends.

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