Mute linear guide rail pair

Abstract

The utility model relates to the technical field of linear guide rails, and discloses a mute linear guide rail pair which comprises a guide rail, a sliding block is arranged on the surface of the guide rail in a sliding mode, two side limiting blocks are fixedly connected to the lower surface of the sliding block, a guide shell is fixedly connected between the two side limiting blocks, and a plurality of balls are arranged on the upper surface and the lower surface of the guide shell. The guide shell extends into a sliding groove in the side face of the guide rail, the balls are slidably connected with the inner wall of the sliding groove of the guide rail, a mounting groove is formed in the side limiting block, and the inner wall of the mounting groove is fixedly connected with two fixing blocks which correspond to each other in the vertical direction. The guide shell is arranged at the bottom of the sliding block of the linear guide rail, the balls are arranged on the upper surface and the lower surface of the guide shell, the sliding block can smoothly move on the surface of the guide rail due to the fact that the balls roll in the sliding grooves in the two sides of the guide rail, the balls only roll in the limiting round holes in the surface of the guide shell, and the stability of the balls can be improved; and the situation that the balls are stuck is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of linear guide rails, and more specifically to a silent linear guide rail pair. Background Art

[0002] Linear guides, also known as linear rails, slides, linear guides, and linear slides, are precision mechanical devices that guide equipment to reciprocate in a straight line. They can withstand a certain torque and achieve high-precision linear motion under high load conditions.

[0003] According to patent search, the announcement number CN210484401U discloses a silent linear guide slider pair, including a slider installed on the guide rail, a circulation channel is longitudinally arranged inside the side wall of the slot, and a ball reverser and an end cover are respectively installed at both ends of the slider in sequence, the circulation channel is symmetrically arranged inside the side wall on both sides of the slot, and the ball reversers at both ends and the ball tracks on the guide rail form a ball reverse circulation system, the balls contact the ball tracks under the action of the ball reverse circulation system, a synchronous coupler is arranged in the ball reverse circulation system, the synchronous coupler includes a spacer ring arranged between adjacent balls and a connecting belt for connecting the spacer rings, and a lubricating block is embedded in the cavity of the spacer ring. The utility model effectively reduces the noise and friction resistance during the operation of the linear guide rail and improves the smoothness of operation.

[0004] The silent linear guide slider pair proposed in the above patent document uses connecting belts and spacer rings to limit several balls, but the connecting belts and spacer rings are arranged between several balls, which will affect the movement of the balls to a certain extent. When the balls move in the slider circulation channel, the connecting belt will get stuck or blocked at the corners of the circulation channel, thereby affecting the smoothness of the slider movement, and the vibration generated between the balls, connecting belts and guide rails will also affect the silent effect. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a silent linear guide pair, which has the advantages of smoothness and good silent effect, so as to solve the problems existing in the above-mentioned background technology.

[0006] The utility model provides the following technical solutions: a silent linear guide pair, comprising a guide rail, a slider is slidably arranged on the surface of the guide rail, two side limit blocks are fixedly connected to the lower surface of the slider, a guide shell is fixedly connected between the two side limit blocks, a plurality of balls are arranged on the upper and lower surfaces of the guide shell, the guide shell extends to the inside of the slide groove on the side of the guide rail, the balls are slidably connected to the inner wall of the guide rail slide groove, a guide shell is arranged at the bottom of the slider of the linear guide rail, and balls are arranged on the upper and lower surfaces of the guide shell, the balls can be used to roll in the slide grooves on both sides of the guide rail, so that the slider can move smoothly on the guide rail surface, and the balls only roll in the limit circular holes on the surface of the guide shell, which can improve the stability of the balls and avoid the situation where the balls are stuck;

[0007] The inside of the side limit block is provided with an installation groove, and the inner wall of the installation groove is fixedly connected with two fixing blocks corresponding to the upper and lower positions, and the two fixing blocks are fixedly connected with two first guide columns on the sides away from each other, and the surface of the first guide column is slidingly sleeved with a buffer plate, and the side of the buffer plate is fixedly connected with a plurality of support rods, and the ball is rotatably connected to the surface of the support rod, and the surface of the first guide column is sleeved with a first support spring, and the first support spring can be used to support the support rod of the ball, so as to buffer the vibration generated between the ball and the guide rail slide groove, thereby reducing the vibration of the slider, which is beneficial to improving the mute effect of the guide rail;

[0008] The inner wall of the mounting groove is fixedly connected with a liquid guide tube, the end of the liquid guide tube extends to the inside of the guide shell, and the upper and lower surfaces of the liquid guide tube are fixedly embedded with atomizing nozzles, the position of the atomizing nozzle corresponds to the ball, and by arranging the liquid guide tube and the atomizing nozzle inside the guide shell, when the ball needs to be lubricated, the atomizing nozzle on the surface of the liquid guide tube is used to spray lubricating oil on the surface of the ball, so that the ball evenly coats the lubricating oil liquid on the inside of the guide rail groove during rolling, thereby facilitating lubrication and oiling of the guide rail and the slider.

[0009] Furthermore, a plurality of second guide posts are fixedly connected to the inner wall of the guide shell, a guide hole matching the second guide post is opened on the surface of the support rod, and the support rod is slidably connected to the surface of the second guide post through the guide hole.

[0010] Furthermore, a second support spring is sleeved on the surface of the second guide column, and an end of the second support spring is fixedly connected to the surface of the support rod.

[0011] Furthermore, one end of the first support spring is fixedly connected to the surface of the buffer plate, and the other end of the first support spring is fixedly connected to the surface of the fixing block.

[0012] Furthermore, a guide sleeve is fixedly connected to the inner wall of the mounting groove, a piston plate is slidably provided on the inner wall of the guide sleeve, a movable pull rod is fixedly connected to the surface of the piston plate, the end of the movable pull rod extends to the outside of the side limit block, and a drain pipe is fixedly embedded on the lower surface of the guide sleeve, and the drain pipe extends to the interior of the guide pipe at one end away from the guide sleeve.

[0013] Furthermore, a liquid storage cavity is opened inside the side limit block, and the interior of the liquid storage cavity is filled with lubricating oil. A liquid extraction tube is embedded in the upper surface of the guide sleeve, and the liquid inlet port of the liquid extraction tube extends to the interior of the liquid storage cavity. The guide sleeve is used to transport the oil in the liquid storage cavity to the interior of the liquid guide tube.

[0014] Furthermore, a one-way liquid inlet valve is arranged on the surface of the liquid extraction tube, a one-way liquid outlet valve is arranged on the surface of the liquid discharge tube, a liquid adding hole is opened on the side of the liquid storage cavity, and a sealing plug is arranged on the inner wall of the liquid adding hole.

[0015] Furthermore, a plurality of limiting circular holes are provided on the upper and lower surfaces of the guide shell, the positions of the limiting circular holes correspond to the ball bearings, and the limiting circular holes are used to limit the positions of the ball bearings.

[0016] Technical effects and advantages of the utility model:

[0017] 1. The utility model provides a guide shell at the bottom of the slider of the linear guide rail, and balls are provided on the upper and lower surfaces of the guide shell, so that the balls can roll in the slide grooves on both sides of the guide rail, so that the slider can move smoothly on the guide rail surface, and the balls only roll in the limiting circular holes on the surface of the guide shell, which can improve the stability of the balls and avoid the jamming of the balls. By providing a first guide column and a second guide column, the first support spring and the second support spring on the surface of the first guide column and the second guide column can be used to support the support rod of the balls, and the vibration generated between the balls and the guide rail slide groove can be buffered, thereby reducing the vibration of the slider, which is beneficial to improving the quiet effect of the guide rail.

[0018] 2. The utility model is provided with a liquid guide tube and an atomizing nozzle inside the guide shell. When the ball needs to be lubricated, it is only necessary to pull the movable pull rod on the side of the side limit block outward, and then use the guide sleeve to pump the lubricating oil in the liquid storage chamber into the inside of the liquid guide tube, and use the atomizing nozzle on the surface of the liquid guide tube to spray the lubricating oil on the surface of the ball, so that the ball evenly coats the lubricating oil inside the guide rail groove during the rolling process, thereby facilitating the lubrication of the guide rail and the slider, and the operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the partial cross-sectional structure of the practical side limit block;

[0021] Figure 3 This is a schematic diagram of a partial front section structure of the slider of the utility model;

[0022] Figure 4 It is a schematic diagram of the front section structure of the side limit block and the guide shell of the utility model;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at A in the middle.

[0024] The accompanying drawings are marked as follows: 1. guide rail; 2. slider; 3. side limit block; 4. guide shell; 5. ball bearing; 6. mounting groove; 7. first guide column; 8. buffer plate; 9. support rod; 10. first support spring; 11. liquid guide tube; 12. atomizing nozzle; 13. second guide column; 14. second support spring; 15. guide sleeve; 16. piston plate; 17. movable pull rod; 18. drain pipe; 19. liquid storage chamber; 20. liquid extraction pipe; 21. one-way liquid inlet valve; 22. one-way liquid outlet valve; 23. sealing plug; 24. limiting circular hole. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The silent linear guide pair involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0026] Reference Figure 1-5 The utility model provides a silent linear guide pair, including a guide rail 1, a slider 2 is slidably arranged on the surface of the guide rail 1, two side limit blocks 3 are fixedly connected to the lower surface of the slider 2, a guide shell 4 is fixedly connected between the two side limit blocks 3, a plurality of balls 5 are arranged on the upper and lower surfaces of the guide shell 4, the guide shell 4 extends to the inside of the slide groove on the side of the guide rail 1, and the balls 5 are slidably connected to the inner wall of the slide groove of the guide rail 1;

[0027] The upper and lower surfaces of the guide shell 4 are both provided with a plurality of limiting circular holes 24 . The positions of the limiting circular holes 24 correspond to the ball 5 , and the limiting circular holes 24 are used to limit the ball 5 so that the ball 5 can rotate inside the limiting circular holes 24 .

[0028] It is worth mentioning that by providing a guide shell 4 at the bottom of the slider 2 of the linear guide 1, and providing a plurality of balls 5 on the upper and lower surfaces of the guide shell 4, the balls 5 can be used to roll in the slide grooves on both sides of the guide rail 1, so that the slider 2 can move smoothly on the surface of the guide rail 1, and the balls 5 only roll in the limiting circular holes 24 on the surface of the guide shell 4, which can improve the stability of the balls 5 and avoid jamming and blocking of the balls 5, thereby helping to improve the stability of the use of the guide 1.

[0029] A mounting groove 6 is provided inside the side limit block 3, and two fixed blocks corresponding to the upper and lower positions are fixedly connected to the inner wall of the mounting groove 6. Two first guide columns 7 are fixedly connected to the sides of the two fixed blocks away from each other. A buffer plate 8 is slidingly sleeved on the surface of the first guide column 7, and a plurality of support rods 9 are fixedly connected to the side of the buffer plate 8. The ball 5 is rotatably connected to the surface of the support rod 9. A first support spring 10 is sleeved on the surface of the first guide column 7, and one end of the first support spring 10 is fixedly connected to the surface of the buffer plate 8, and the other end of the first support spring 10 is fixedly connected to the surface of the fixed block.

[0030] A plurality of second guide columns 13 are fixedly connected to the inner wall of the guide shell 4, and a guide hole matching the second guide column 13 is opened on the surface of the support rod 9. The support rod 9 is slidably connected to the surface of the second guide column 13 through the guide hole. A second support spring 14 is sleeved on the surface of the second guide column 13, and the end of the second support spring 14 is fixedly connected to the surface of the support rod 9.

[0031] It is worth mentioning that by arranging the first guide column 7 and the second guide column 13 inside the guide shell 4, the first support spring 10 and the second support spring 14 on the surface of the first guide column 7 and the second guide column 13 can be used to support the support rod 9 on the surface of the ball 5, and the vibration generated between the ball 5 and the guide groove of the guide rail 1 can be buffered, thereby reducing the vibration and helping to improve the quiet effect of the guide rail 1.

[0032] The inner wall of the mounting groove 6 is fixedly connected with a liquid guide tube 11 , the end of which extends to the inside of the guide shell 4 , and the upper and lower surfaces of the liquid guide tube 11 are fixedly embedded with atomizing nozzles 12 , the position of which corresponds to the ball 5 .

[0033] A guide sleeve 15 is fixedly connected to the inner wall of the mounting groove 6, a piston plate 16 is slidably provided on the inner wall of the guide sleeve 15, a movable pull rod 17 is fixedly connected to the surface of the piston plate 16, the end of the movable pull rod 17 extends to the outside of the side limit block 3, a drain pipe 18 is fixedly embedded on the lower surface of the guide sleeve 15, and one end of the drain pipe 18 away from the guide sleeve 15 extends to the inside of the guide pipe 11.

[0034] A liquid storage chamber 19 is provided inside the side limit block 3, and the interior of the liquid storage chamber 19 is filled with lubricating oil. A liquid extraction tube 20 is embedded in the upper surface of the guide sleeve 15, and the liquid inlet port of the liquid extraction tube 20 extends to the interior of the liquid storage chamber 19. The guide sleeve 15 is used to transport the oil in the liquid storage chamber 19 to the interior of the guide tube 11.

[0035] A one-way liquid inlet valve 21 is arranged on the surface of the liquid suction tube 20, a one-way liquid outlet valve 22 is arranged on the surface of the liquid discharge tube 18, a liquid adding hole is opened on the side of the liquid storage chamber 19, and a sealing plug 23 is arranged on the inner wall of the liquid adding hole. Lubricating oil can be added to the inside of the liquid storage chamber 19 through the liquid adding hole, and the liquid adding hole is closed by the sealing plug 23.

[0036] It is worth mentioning that, by arranging the liquid guide tube 11 and the atomizing nozzle 12 inside the guide shell 4, when the ball 5 needs to be lubricated, it is only necessary to pull outward the movable pull rod 17 on the side of the side limit block 3, and use the movable pull rod 17 to drive the piston plate 16 to move in the guide sleeve 15, so as to generate negative pressure inside the guide sleeve 15, and use the negative pressure to suck the lubricating oil inside the liquid storage chamber 19 into the guide sleeve 15 through the suction pipe 20, and then press the movable pull rod 17 inward, and use the piston plate 16 to pump the oil into the liquid guide tube 11 through the discharge pipe 18, and use the atomizing nozzle 12 on the surface of the liquid guide tube 11 to spray the oil onto the surface of the ball 5, so that the ball 5 will evenly coat the lubricating oil inside the guide groove of the guide rail 1 during the rolling process, thereby facilitating the lubrication and oiling of the guide rail 1 and the slider 2.

[0037] Finally, it should be noted that the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model. The above description is only a preferred embodiment of the present utility model and is not used to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A silent linear guide pair, comprising a guide rail (1), a sliding block (2) being slidably arranged on the surface of the guide rail (1), characterized in that: The lower surface of the slider (2) is fixedly connected to two side limit blocks (3), a guide shell (4) is fixedly connected between the two side limit blocks (3), the upper and lower surfaces of the guide shell (4) are both provided with a plurality of balls (5), the guide shell (4) extends to the inside of the slide groove on the side of the guide rail (1), and the balls (5) are slidably connected to the inner wall of the slide groove of the guide rail (1); The side limit block (3) is provided with a mounting groove (6) inside, and the inner wall of the mounting groove (6) is fixedly connected with two fixed blocks at corresponding upper and lower positions, and the two fixed blocks are fixedly connected with two first guide columns (7) on the sides away from each other, and the surface of the first guide column (7) is slidably sleeved with a buffer plate (8), and the side of the buffer plate (8) is fixedly connected with a plurality of support rods (9), and the ball (5) is rotatably connected with the surface of the support rod (9), and the surface of the first guide column (7) is sleeved with a first support spring (10); A liquid guide tube (11) is fixedly connected to the inner wall of the mounting groove (6), the end of the liquid guide tube (11) extends to the interior of the guide shell (4), and atomizing nozzles (12) are fixedly embedded on the upper and lower surfaces of the liquid guide tube (11), and the position of the atomizing nozzle (12) corresponds to the ball (5).

2. The silent linear guide pair according to claim 1, characterized in that: A plurality of second guide columns (13) are fixedly connected to the inner wall of the guide shell (4), a guide hole matching the second guide column (13) is opened on the surface of the support rod (9), and the support rod (9) is slidably connected to the surface of the second guide column (13) through the guide hole.

3. The silent linear guide pair according to claim 2, characterized in that: A second support spring (14) is sleeved on the surface of the second guide column (13), and an end of the second support spring (14) is fixedly connected to the surface of the support rod (9).

4. The silent linear guide pair according to claim 3 is characterized in that: One end of the first support spring (10) is fixedly connected to the surface of the buffer plate (8), and the other end of the first support spring (10) is fixedly connected to the surface of the fixing block.

5. The silent linear guide pair according to claim 4, characterized in that: The inner wall of the installation groove (6) is fixedly connected with a guide sleeve (15), the inner wall of the guide sleeve (15) is slidably provided with a piston plate (16), the surface of the piston plate (16) is fixedly connected with a movable pull rod (17), the end of the movable pull rod (17) extends to the outside of the side limit block (3), and the lower surface of the guide sleeve (15) is fixedly embedded with a drainage pipe (18), and the end of the drainage pipe (18) away from the guide sleeve (15) extends to the inside of the drainage pipe (11).

6. The silent linear guide pair according to claim 5, characterized in that: A liquid storage chamber (19) is provided inside the side limit block (3), and the interior of the liquid storage chamber (19) is filled with lubricating oil. A liquid extraction pipe (20) is embedded on the upper surface of the guide sleeve (15), and the liquid inlet port of the liquid extraction pipe (20) extends to the interior of the liquid storage chamber (19). The guide sleeve (15) is used to transport the oil in the liquid storage chamber (19) to the interior of the guide pipe (11).

7. The silent linear guide pair according to claim 6, characterized in that: The surface of the liquid extraction tube (20) is provided with a one-way liquid inlet valve (21), the surface of the liquid discharge tube (18) is provided with a one-way liquid outlet valve (22), and the side of the liquid storage chamber (19) is provided with a liquid adding hole, and the inner wall of the liquid adding hole is provided with a sealing plug (23).

8. The silent linear guide pair according to claim 7, characterized in that: The upper and lower surfaces of the guide shell (4) are both provided with a plurality of limiting circular holes (24), the positions of the limiting circular holes (24) correspond to the balls (5), and the limiting circular holes (24) are used to limit the positions of the balls (5).

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