Linear guide rail with balls convenient to replace

Abstract

The utility model discloses a linear guide rail with balls convenient to replace and belongs to the technical field of linear guide rails, the surface of a guide rail body is movably connected with a sliding block body, the side face of the sliding block body is provided with a limiting groove, the inner wall of the limiting groove is provided with a positioning groove and an inserting opening, and the inner wall of the limiting groove is in contact connection with a limiting plate. A limiting plate is arranged on the sliding block body, a boss is arranged on the side face of the limiting plate, the side edge of the boss is slidably connected with the inner wall of the inserting opening, a ball groove is formed in the surface of the boss, and a ball is detachably connected to the inner wall of the ball groove. According to the sliding block, mutual contact abrasion of the balls in the sliding block moving process can be avoided, the service life of the balls is effectively prolonged, the balls on the inner sides of the limiting plates are conveniently and rapidly detached and replaced through the limiting grooves and the positioning pieces, the replacement efficiency is high, the structure is simple, and the machining difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of linear guide rails, and more particularly to a linear guide rail with convenient ball replacement. Background Art

[0002] Linear guides can be divided into three types: roller linear guides, cylindrical linear guides, and ball linear guides. They are used to support and guide moving parts to perform reciprocating linear motion in a given direction. Common linear guides rub against each other during use, shortening their service life. In addition, replacing structural components is cumbersome, increasing processing difficulty.

[0003] For example, announcement number CN207879855U discloses a convenient ball-changing ball linear slide, which includes a slide rail body, a slider body and end plates arranged at both ends of the slider body. A ball load channel is provided between the slide rail body and the slider body, and a ball return channel is provided on the end plate. The ball load channel and the corresponding ball return channel are connected at both ends through a transition channel to form an annular circulation channel.

[0004] It can be seen from the above-mentioned public scheme that the balls are quickly replaced through the set structural components such as the ball load channel, ball entry channel, ball exit channel, circulation channel, ball storage groove, sliding baffle and rotating plate. However, its structural components are relatively cumbersome and troublesome to process, which increases the processing difficulty and thus increases the cost. In addition, the balls inside the slider will contact and squeeze each other inside the ball load channel, thereby accelerating the wear of the balls and shortening the service life of the balls. Utility Model Content

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a linear guide rail for easy replacement of ball bearings. The linear guide rail for easy replacement of ball bearings can avoid mutual contact and wear of the balls during the movement of the slider through the limit plate set on the slider body and the ball groove set on the limit plate, thereby effectively extending the service life of the balls. In addition, the limit groove and positioning part set can facilitate the rapid disassembly and replacement of the balls on the inner side of the limit plate, which not only has high replacement efficiency but also has a simple structure, reducing the processing difficulty.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions.

[0007] The cam is provided with a groove for sliding the guide rail to move the guide rail forward, and the groove for sliding the guide rail is provided with a toothed groove, and the toothed groove is provided with a toothed groove, and the toothed groove is provided with a toothed groove, and the toothed groove is provided with a toothed groove.

[0008] Furthermore, a countersunk hole is provided at one end of the slider body, and a positioning ring is fixedly sleeved on the surface of the insertion rod. The surface of the positioning ring is in contact and extrusion with the inner wall of the countersunk hole. The positioning ring is made of elastic rubber. The positioning ring can fix the insertion position of the insertion rod by elastic force, thereby facilitating the installation and disassembly of the insertion rod.

[0009] Furthermore, four symmetrical scrapers are provided on the inner side of the slider body. The cross-sectional shape of the scraper is semicircular. A gap of less than one millimeter is left between one end of the scraper and the inner wall of the guide groove. The scraper has a limiting function and can automatically scrape off dirt in the guide groove during movement.

[0010] Furthermore, an adsorption head is provided at one end of the insertion rod, and the adsorption head is made of a strong magnet. The surface of the adsorption head is magnetically adsorbed and connected to the inner wall of the positioning groove. The adsorption head can fix the insertion position of the insertion rod through magnetic adsorption force, which facilitates the installation and disassembly of the insertion rod.

[0011] Furthermore, one end of the socket is connected to the positioning groove, and the other end of the socket is connected to the countersunk hole. The socket, positioning groove and countersunk hole are coaxial, and the socket, positioning groove and countersunk hole are easy to plug and cooperate with the positioning piece, thereby facilitating the installation and disassembly of the limit plate, and further facilitating the rapid replacement of the ball.

[0012] Furthermore, the positioning ring is in the shape of a circular ring, and the outer diameter of the positioning ring is larger than the inner diameter of the countersunk hole. The positioning ring can be squeezed through the countersunk hole to generate a compressive elastic force.

[0013] Furthermore, the height dimension of the boss is the same as the depth dimension of the socket, which is convenient for limiting the limiting plate and will not affect the support of the ball bearing on the slider body.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] This solution uses the limit plate provided on the slider body and the ball groove provided on the limit plate to prevent the balls from contacting and wearing each other during the movement of the slider, effectively extending the service life of the balls.

[0016] This solution facilitates the rapid disassembly and replacement of the balls on the inner side of the limiting plate by providing the limiting grooves and positioning pieces, which not only has high replacement efficiency but also has a simple structure and reduces processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the slider body structure of the utility model;

[0019] Figure 3 This is a three-dimensional diagram of the limiting plate structure of the utility model;

[0020] Figure 4 for Figure 3 Side view of the limiting plate structure;

[0021] Figure 5 This is a three-dimensional diagram of the positioning member structure of the present utility model.

[0022] Description of the numbers in the figure:

[0023] 1 guide rail body, 11 guide groove, 2 slider body, 21 countersunk hole, 22 positioning groove, 23 limit groove, 24 socket, 25 scraper block, 3 limit plate, 31 boss, 32 socket, 33 ball groove, 34 ball, 4 positioning piece, 41 insertion rod, 42 positioning ring, 43 adsorption head. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0025] See also Figure 1-5, a linear guide rail for convenient replacement of ball bearings, including a guide rail body 1, the guide rail body 1 belongs to the prior art, its composition structure and size are well known to those skilled in the art, and will not be described in detail here, the surface of the guide rail body 1 is movably connected to the slider body 2, the slider body 2 is sleeved on the surface of the guide rail body 1 by one end of the guide rail body 1, the side of the slider body 2 is provided with a limiting groove 23, the inner wall of the limiting groove 23 is provided with a positioning groove 22 and a socket 24, the inner wall of the limiting groove 23 is in contact with the limiting plate 3, the limiting plate 3 is used to position the position of each ball bearing 34 to avoid mutual contact and accelerated wear between the balls 34, the side of the limiting plate 3 is provided with a boss 31, the height of the boss 31 is the same as the socket The depth dimensions of 24 are the same, which is convenient for limiting the limit plate 3, and at the same time will not affect the support of the ball 34 on the slider body 2. The positioning ring 42 is in the shape of a circular ring, and the outer diameter of the positioning ring 42 is larger than the inner diameter of the countersunk hole 21. The positioning ring 42 can be squeezed through the countersunk hole 21 to generate a compressive elastic force. The side of the boss 31 is slidably connected to the inner wall of the socket 24, and the surface of the boss 31 is provided with a ball groove 33, and the ball grooves 33 are distributed at equal intervals. The inner wall of the ball groove 33 is detachably connected to the ball 34, and the surface of the ball 34 is rollingly connected to the guide groove 11. A positioning member 4 is inserted into one end of the slider body 2, and an insertion rod 41 is provided on the surface of the positioning member 4. The surface of the insertion rod 41 is slidably connected to the socket 32.

[0026] A countersunk hole 21 is provided at one end of the slider body 2, and a positioning ring 42 is fixedly sleeved on the surface of the insertion rod 41. The surface of the positioning ring 42 is in contact and squeezed with the inner wall of the countersunk hole 21. The positioning ring 42 is made of elastic rubber. The positioning ring 42 can fix the insertion position of the insertion rod 41 by elastic force, which is convenient for the installation and disassembly of the insertion rod 41. Four symmetrical scraping blocks 25 are provided on the inner side of the slider body 2. The cross-sectional shape of the scraping block 25 is semicircular. There is a gap of less than one millimeter between one end of the scraping block 25 and the inner wall of the guide groove 11. The scraping block 25 has a limiting function and can also automatically scrape off dirt in the guide groove 11 during movement.

[0027] An adsorption head 43 is provided at one end of the insertion rod 41. The adsorption head 43 is made of a strong magnet. The surface of the adsorption head 43 is magnetically adsorbed and connected to the inner wall of the positioning groove 22. The adsorption head 43 can fix the insertion position of the insertion rod 41 through magnetic adsorption force, which is convenient for the installation and disassembly of the insertion rod 41. One end of the socket 32 ​​is connected to the positioning groove 22, and the other end of the socket 32 ​​is connected to the countersunk hole 21. The socket 32, the positioning groove 22 and the countersunk hole 21 are coaxial. The socket 32, the positioning groove 22 and the countersunk hole 21 are convenient for plugging and matching with the positioning part 4, thereby facilitating the installation and disassembly of the limit plate 3, and then facilitating the quick replacement of the ball 34.

[0028] When the linear guide rail for convenient ball replacement is in use, the ball 34 rolls in the ball groove 33 and the guide groove 11, and the balls 34 do not contact each other. When the ball 34 needs to be replaced, the positioning member 4 can be manually pulled out, and then the limit plate 3 is removed, so that the ball 34 falls out of the slider body 2 through the socket 24 and the limit groove 23, and then the new ball 34 is placed in the ball groove 33, and then the limit plate 3 is installed in the limit groove 23, so that the ball 34 is confined between the ball groove 33 and the guide groove 11, and the socket 32, the countersunk hole 21 and the positioning groove 22 are concentric. Coaxially, then insert the insertion rod 41 through the countersunk hole 21, and finally adsorb it in the positioning groove 22, thereby fixing the installation position of the limit plate 3, and then the slider completes the replacement of the ball 34. The limit plate 3 set by the slider body 2 and the ball groove 33 set by the limit plate 3 can avoid the balls 34 from contacting and wearing each other during the movement of the slider, effectively extending the service life of the balls 34, and through the set limit groove 23 and positioning member 4, the balls 34 on the inner side of the limit plate 3 are quickly disassembled and replaced, which not only has high replacement efficiency but also has a simple structure and reduces processing difficulty.

[0029] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A linear guide rail for convenient ball bearing replacement, comprising a guide rail body (1), a slider body (2) being movably connected to the surface of the guide rail body (1), characterized in that: A limiting groove (23) is provided on the side of the slider body (2), and a positioning groove (22) and a socket (24) are provided on the inner wall of the limiting groove (23). The inner wall of the limiting groove (23) is in contact with and connected to the limiting plate (3). A boss (31) is provided on the side of the limiting plate (3). The side edge of the boss (31) is slidably connected to the inner wall of the socket (24). A ball groove (33) is provided on the surface of the boss (31). A ball (34) is detachably connected to the inner wall of the ball groove (33). The surface of the ball (34) is rollingly connected to the guide groove (11). A positioning member (4) is plugged into one end of the slider body (2), and an insertion rod (41) is provided on the surface of the positioning member (4). The surface of the insertion rod (41) is slidably connected to the socket (32).

2. A linear guide rail with convenient ball replacement according to claim 1, characterized in that: A countersunk hole (21) is provided at one end of the slider body (2), a positioning ring (42) is fixedly sleeved on the surface of the insertion rod (41), the surface of the positioning ring (42) contacts and squeezes the inner wall of the countersunk hole (21), and the positioning ring (42) is made of elastic rubber.

3. The linear guide rail with convenient ball replacement according to claim 1, characterized in that: Four symmetrical scrapers (25) are provided on the inner side of the slider body (2). The cross-section of the scraper (25) is semicircular, and a gap of less than one millimeter is left between one end of the scraper (25) and the inner wall of the guide groove (11).

4. The linear guide rail with convenient ball replacement according to claim 1, characterized in that: An adsorption head (43) is provided at one end of the insertion rod (41), and the adsorption head (43) is made of a strong magnet. The surface of the adsorption head (43) is connected to the inner wall of the positioning groove (22) by magnetic adsorption.

5. The linear guide rail with convenient ball replacement according to claim 2, characterized in that: One end of the jack (32) is connected to the positioning groove (22), and the other end of the jack (32) is connected to the countersunk hole (21). The jack (32), the positioning groove (22) and the countersunk hole (21) are coaxial.

6. The linear guide rail with convenient ball replacement according to claim 2, characterized in that: The positioning ring (42) is in the shape of a circular ring, and the outer diameter of the positioning ring (42) is larger than the inner diameter of the countersunk hole (21).

7. The linear guide rail with convenient ball replacement according to claim 1, characterized in that: The height dimension of the boss (31) is the same as the depth dimension of the socket (24).

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