CN116517956A - a linear guide - Google Patents

Abstract

The invention relates to the field of guide rails and provides a linear guide rail, which comprises a guide rail and a sliding block arranged on the guide rail in a sliding manner; the sliding block comprises a sliding support made of plastic materials and a retainer sleeved on the outer side of the sliding support, wherein a plurality of hollowed rolling grooves are formed in two sides of the sliding support, the retainer and the rolling grooves are spliced to form circular arc grooves, a plurality of balls are arranged in the circular arc grooves in a rolling manner, the balls are in rolling abutting joint with the guide rail, a plurality of circulating channels are arranged in the retainer, and the circulating channels are respectively communicated with the circular arc grooves so that the balls can circularly roll; the invention can reduce the production difficulty of the linear guide rail and improve the production efficiency.

Description

a linear guide

technical field

The invention relates to the field of guide rails, in particular to a linear guide rail.

Background technique

A linear guide rail is a component used to support and guide movement. It generally includes a guide rail and a slider that slides on the guide rail for linear motion. Usually, there are multiple arc grooves between the guide rail and the slider. The arc groove is not closed, and the rolling balls are placed inside, so that the balls can roll in contact with the guide rail, so that the balls can slide between the slider and the guide rail, which can reduce the friction coefficient and make the slider slide along the guide rail. Easy to perform high-precision linear motion,

The circular arc grooves of the existing linear guide rails are generally formed by splicing around the auxiliary grooves in the slider and a plurality of limit strips with arc grooves. The limit strips are generally made of metal cutting The production is relatively difficult, and the splicing and assembly of the limit strips after the production is completed also lowers the production efficiency of the linear guide rail.

Contents of the invention

The problem solved by the present invention is how to provide a linear guide rail, which can reduce the production difficulty of the linear guide rail and improve production efficiency.

In order to solve the above problems, the present invention provides a linear guide rail, including a guide rail and a slider slidably arranged on the guide rail; the slider includes a sliding bracket made of plastic material and a sliding bracket sleeved on the outside of the sliding bracket The retainer, the two sides of the sliding bracket are provided with a plurality of hollow rolling grooves, the retainer and each of the rolling grooves are spliced to form an arc groove, and each of the arc grooves is provided with a plurality of rolling balls , each of the balls is in rolling contact with the guide rail, and a plurality of circulation channels are arranged in the retainer, and each of the circulation channels is respectively connected with each of the arc grooves, so that each of the balls circulates scroll.

Optionally, the sliding bracket includes two opposite end cover parts, and a bottom plate part, two support parts and two fixing parts connected between the end cover parts, the bottom plate part is arranged horizontally , the supporting part and the fixing part are sequentially arranged in an inverted U-shaped interval on both sides of the bottom plate part, so as to snap accommodate the guide rail.

Optionally, first grooves are respectively provided on both sides of the bottom plate, and second grooves are respectively provided on one side of each support portion opposite to the bottom plate, and each first groove is respectively connected with each The second grooves are arranged opposite to each other to form the rolling groove, each of the support parts is respectively provided with a third groove on one side facing each of the fixing parts, and each of the fixing parts is provided with a fourth groove opposite to each other. , so as to respectively form the rolling grooves with each of the third grooves.

Optionally, the retainer includes two outer end caps and a main body, the two outer end caps are respectively arranged on the outside of each of the end cap parts, the main body is sleeved on the outer periphery of the sliding bracket, The side of the main body facing the sliding bracket is provided with a plurality of auxiliary grooves, and each auxiliary groove is adapted to the gap on one side of each rolling groove to form the arc groove.

Optionally, each of the outer end caps is fastened with each of the end caps to form a plurality of reverse passages, one end of each of the reverse passages is respectively connected with each of the arc grooves, and the main body A circulation channel connected with the other end of each reverse channel is arranged inside, so that each of the balls can perform circular rolling.

Optionally, first protrusions are respectively provided on both sides of the guide rail, each of the first protrusions extends upwards with a first indentation, and each of the first protrusions extends downwards with a The second indented part, each of the first protruding parts slides against each of the support parts, and each of the first indented parts and each of the second indented parts are respectively located in each of the arc grooves. Grooved ball rolling fit.

Optionally, each of the first indented parts is extended upward with a locking portion, and the locking portion includes an inwardly chamfered chamfered surface and a limiting groove connected to the chamfered surface, and the chamfered surface and the position-limiting groove and the side of the fixing part away from the support frame are arranged in sliding fit.

Optionally, both ends of each support portion are respectively detachably arranged on each end cover portion.

Optionally, one end of the bottom plate close to each of the outer end caps is bare, so as to be elastically and telescopically connected with each of the outer end caps.

Compared with the beneficial effects of the prior art, the linear guide rail in the present invention includes a guide rail and a slider slidably arranged on the guide rail, and the slider includes a sliding bracket and a holder sleeved on the outside of the sliding bracket, The sliding bracket is made of plastic material and has a plurality of hollow rolling grooves on both sides. The rolling grooves can be spliced with the retainer sleeved on the outside of the sliding bracket to form arc grooves. It can be understood that The outer side of the sliding bracket refers to the side of the sliding bracket that is not slidingly attached to the guide rail, and a plurality of hollow rolling grooves are arranged on both sides of the sliding bracket, that is, each rolling groove and the The sliding bracket is integrated, and the retainer is spliced with each of the rolling grooves to form arc grooves, so that only the sliding bracket and the retainer need to be combined, so that the linear guide rail can be improved. production efficiency, the integrated setting of the sliding bracket can also facilitate the subsequent use of mechanical equipment for mechanized unmanned assembly of the linear guide rail, thereby further improving the production efficiency of the linear guide rail, the sliding bracket is made of plastic material As a result, the sliding bracket can be mass-produced through plastic molds, thereby reducing the difficulty of production, enabling rapid mass production, and the sliding bracket can also be fixed by setting a retainer to prevent deformation, and prevent the balls from falling off. To sum up, the production difficulty of the linear guide rail is reduced and the production efficiency is improved. A plurality of balls are rollingly arranged in each of the circular arc grooves, and each of the balls rolls against the guide rail, and the holding A plurality of circulation channels are arranged in the device, each of the circulation channels is connected with each of the arc grooves, so that each of the balls can perform circular rolling, so that the slider can reciprocate on the guide rail linear motion.

Description of drawings

Fig. 1 is a schematic structural view of a linear guide rail in an embodiment of the present invention;

Fig. 2 is a schematic diagram of an explosion structure of a linear guide rail in an embodiment of the present invention;

Fig. 3 is a schematic structural view of a sliding bracket in an embodiment of the present invention;

Fig. 4 is a partial structural schematic diagram of a linear guide rail in an embodiment of the present invention.

Marks shown in the accompanying drawings: 1- guide rail; 2- slider; 21- sliding bracket; 22- main body; 23- outer end cover; 211- end cover part; 212- bottom plate part; 215-elastic part; 216-reverse groove; 212A-first groove; 214A-fourth groove; - the first indented part; 13 - the second indented part; 14 - the limit groove; 15 - the chamfered surface; 221 - the circulation channel.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the description of this specification, descriptions with reference to the terms "an embodiment", "an embodiment" and "an implementation" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in this specification. In at least one embodiment or implementation of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

The present invention will be described in detail below in conjunction with the accompanying drawings.

In order to solve the above technical problems, as shown in Figure 1 and Figure 2, the embodiment of the present invention provides a linear guide rail, including a guide rail 1 and a slider 2 slidably arranged on the guide rail 1; the slider 2 is made of plastic The sliding bracket 21 made of material and the retainer sleeved on the outside of the sliding bracket 21, the two sides of the sliding bracket 21 are provided with a plurality of hollow rolling grooves, and the retainer is spliced with each of the rolling grooves to form Circular grooves, each of the circular grooves is provided with a plurality of rolling balls, and each of the balls rolls against the guide rail 1, and a plurality of circulation channels 221 are provided in the retainer, and each of the circulation channels 221 The passages 221 are respectively connected with each of the arc grooves, so that each of the balls rolls in a circular manner.

It should be noted that the linear guide rail includes a guide rail 1 and a slider 2 slidably arranged on the guide rail 1, and the slider 2 includes a sliding bracket 21 and a holder sleeved on the outside of the sliding bracket 21. The sliding bracket 21 is made of plastic material and has a plurality of hollow rolling grooves on both sides. The rolling grooves can be spliced with the retainer sleeved on the outside of the sliding bracket 21 to form arc grooves. It can be understood that Yes, the outside of the sliding bracket 21 refers to the side of the sliding bracket 21 that is not slidably attached to the guide rail 1, and the two sides of the sliding bracket 21 are provided with a plurality of hollow rolling grooves, that is, for each The rolling groove and the sliding bracket 21 are integrally arranged, and the retainer is spliced with each of the rolling grooves to form an arc groove, so that only the sliding bracket 21 and the retainer need to be combined. Therefore, the production efficiency of the linear guide rail can be improved, and the integrated setting of the sliding bracket 21 can also facilitate the subsequent use of mechanical equipment for mechanized unmanned assembly of the linear guide rail, thereby further improving the production efficiency of the linear guide rail. The sliding bracket 21 is made of plastic material, so that the sliding bracket can be mass-produced through plastic molds, thereby reducing the difficulty of production, making it possible to mass-produce quickly, and the sliding bracket 21 can also be fixed by setting a retainer, so that Anti-deformation, in addition, it can also prevent the balls from falling off. In summary, the production difficulty of the linear guide rail is reduced and the production efficiency is improved. A plurality of balls are rolled in each of the arc grooves, and each of the The balls are in rolling contact with the guide rail 1, and the retainer is provided with a plurality of circulation channels 221, and each of the circulation channels 221 is respectively connected with each of the arc grooves, so that each of the balls can perform circular rolling , so that the slider 2 can perform reciprocating linear motion on the guide rail 1 .

In one embodiment of the present invention, as shown in FIG. 3 , the sliding bracket 21 includes two opposite end cover parts 211, and a bottom plate part 212 and two end cover parts 211 connected between each of the end cover parts 211. A support portion 213 and two fixing portions 214, the bottom plate portion 212 is arranged horizontally, and the support portion 213 and the fixing portion 214 are arranged on both sides of the bottom plate portion 212 at intervals in an inverted U shape, so as to hold Connect to accommodate the guide rail 1.

It should be noted that the sliding bracket 21 includes two opposite end cover parts 211, the upper part of each end cover part 211 is horizontally connected with the bottom plate part 212, and the sides of the bottom plate part 212 are spaced apart from each other below. The support portion 213 is provided, and the fixing portion 214 is arranged at intervals on the lower side of the support portion 213, so that the support portion 213 and the fixing portion 214 are sequentially arranged in an inverted U-shaped interval on the bottom plate The two sides of 212 are arranged in an inverted U shape to facilitate sliding engagement of the guide rail 1, and it is also convenient for the ball to be placed in the rolling groove formed by the sliding bracket 21 to make rolling contact with the guide rail 1. It can be understood that Yes, the two end cover parts 211, the bottom plate part 212, the two support parts 312 and the two fixing parts 214 are integrated to form the sliding bracket 21 according to the above positional relationship and connection relationship, so that the sliding bracket as described above can be formed 21 molded production and rapid assembly, as well as the beneficial effects of facilitating the subsequent use of mechanical equipment for mechanized unmanned assembly of the linear guide rail.

In one embodiment of the present invention, as shown in FIG. 3 , first grooves 212A are respectively provided on both sides of the bottom plate portion 212 , and first grooves 212A are respectively provided on the side of each support portion 213 opposite to the bottom plate portion 212 . The second groove 213A, each of the first grooves 212A is respectively arranged opposite to each of the second grooves 213A to form the rolling groove, and each of the supporting parts 213 faces one side of each of the fixing parts 214, respectively. A third groove 213B is provided, and a fourth groove 214A is oppositely disposed on each of the fixing parts 214 to form rolling grooves with each of the third grooves 213B.

It should be noted that, wherein, the first groove 212A, the second groove 213A, the third groove 213B and the fourth groove 214A are elongated grooves with a certain arc, and the bottom plate part 212 First grooves 212A are respectively provided on both sides of each support part 213, and second grooves 213A are respectively provided on the side of each support part 213 opposite to the bottom plate part 212, and the first grooves 212A and the second grooves The arcs of 213A are opposite and separated by a certain distance to form the rolling grooves, so as to accommodate the rolling of the balls. Similarly, each supporting part 213 is respectively provided with a third groove 213B on the side facing each of the fixing parts 214 , each of the fixing parts 214 is oppositely provided with a fourth groove 214A to form the rolling groove with each of the third grooves 213B respectively. By setting four rolling grooves, the four-row circular arc can be better used The grooves cooperate with four rows of balls to support and limit the guide rail 1 from four directions, which improves the stability of sliding on the guide rail 1 .

In one embodiment of the present invention, as shown in FIG. 2 and FIG. 4 , the retainer includes two outer end caps 23 and a main body 22, and the two outer end caps 23 are respectively arranged on each of the end cap parts. 211, the main body 22 is sleeved on the outer periphery of the sliding bracket 21, and the side of the main body 22 facing the sliding bracket 21 is provided with a plurality of auxiliary grooves, and each auxiliary groove is respectively connected with each of the The gap on one side of the rolling groove is adapted to form the arc groove.

It should be noted that the retainer includes two outer end caps 23 and a main body 22, each of the outer end caps 23 is respectively arranged on the outside of each of the end caps 211, that is, each of the end caps 211 is away from the One side of the bottom plate portion 212, each of the outer end caps 23 and each of the end cap portions 211 is connected through fixing bolts, the main body 22 is sleeved on the outer periphery of the fixing bracket, and each of the outer end caps The end cover 23 and the main body 22 are also set through the penetration connection of the fixing bolts, the main body 22 is arranged on the outer periphery of the sliding bracket 21, and there are two gaps in each of the rolling grooves on the fixing bracket. One of them is set facing the guide rail 1 so that the balls are in contact with the guide rail 1, and the other is set facing the main body 22, and the side of the main body 22 facing the sliding bracket 21 is provided with a plurality of auxiliary recesses. Grooves, so as to be able to fill the gaps of each of the rolling grooves facing the main body 22, to form each of the arc grooves, to facilitate the rolling of the balls, and to facilitate the main body 22 to the sliding bracket 21 and The balls provide support.

In one embodiment of the present invention, as shown in FIG. 4 , each of the outer end caps 23 is respectively buckled with each of the end cap parts 211 to form a plurality of reverse channels, and one end of each of the reverse channels is respectively connected to Each of the arc grooves is connected, and a circulation channel 221 is provided in the main body 22 and communicated with the other end of each of the reverse channels, so that each of the balls can perform circular rolling.

It should be noted that two reverse grooves 216 are provided on the side of the end cover part 211 facing the outer end cover 23 connected thereto, and the end cover part 211 is matched with the reverse grooves 216. buckle the cover, so that each of the outer end caps 23 is respectively buckled with each of the end cap parts 211 to form a plurality of reverse passages, and one end of each of the reverse passages is respectively connected with each of the arc grooves, so that The main body 22 is provided with a circulation channel 221 connected to the other end of each reverse channel, and the circulation channel 221 is set through the main body 22. It can be understood that the circulation channel 221 passes through the reverse channels arranged at both ends The channel communicates with the circular arc groove, so that the balls can be circulated to assist the slider 2 to slide accurately.

In one embodiment of the present invention, as shown in FIG. 4 , first protrusions 11 are respectively provided on both sides of the guide rail 1 , and each first protrusion 11 is extended upward with a first indentation. 12. Each of the first protruding parts 11 is extended downward with a second indentation part 13, and each of the first protruding parts 11 slides against each of the support parts 213, and each of the first indentations The part 12 and each of the second indented parts 13 are respectively in rolling contact with the balls located in each of the arc grooves.

It should be noted that part of the guide rail 1 is slidably engaged in the slider 2, and in order to facilitate the sliding engagement of the guide rail 1, first protrusions are respectively provided on the side walls on both sides of the guide rail 1. Each of the first protruding portions 11 extends upwards with a first inset portion 12, and each of the first protruding portions 11 extends downwards with a second indentation portion 13, wherein each of the first protruding portions 11 extends downward with a second indentation portion 13. A protruding portion 11 slides against each of the support portions 213 respectively, that is, between the second groove 213A and the third groove 213B of the support portion 213, a protrusion protruding toward the first protruding portion 11 is provided. arc-shaped surface, the first protruding portion 11 is provided with a radian that fits the arc-shaped surface, so as to be able to slide against each other, and each of the first indented portions 12 and each of the second indented portions 13 are respectively provided with radians that roll and fit the balls located in each of the arc grooves to facilitate the rolling of the balls. The arrangement of the portion 13 can separate the ball passages of the circular arc grooves, and enable the guide rail 1 to bear the forces from the balls in four directions, which improves the stability and load capacity of the guide rail 1 .

In one embodiment of the present invention, as shown in FIG. 4 , each of the first inner recesses 12 is extended upward with a locking portion, and the locking portion includes an inwardly chamfered chamfer 15 and a The beveled surface 15 is connected to the limit groove 14 , and the beveled surface 15 and the limit groove 14 are arranged in sliding contact with the side of the fixing part 214 away from the support frame.

It should be noted that, each of the first indented parts 12 is extended upwards with a snap-in part, and the snap-in part is formed by indenting toward the middle of the guide rail 1, and the snap-in part includes an inward chamfer The chamfered surface 15 and the limit groove 14 connected with the chamfered surface 15, the fixing part 214 extends from the side away from the support frame to the middle of the guide rail 1, so as to be compatible with the chamfered surface 15 and the The position-limiting groove 14 is fitted and slidably arranged so as to be able to perform position-limiting and prevent the slider 2 from getting loose when sliding.

In one embodiment of the present invention, as shown in FIG. 3 , both ends of each support portion 213 are respectively detachably disposed on each end cover portion 211 .

It should be noted that, optionally, both ends of each of the supporting parts 213 are detachably arranged on each of the end cover parts 211, so that it is convenient to remove each of the supporting parts 213 and take out each of the balls for replacement. The replacement of the size of the ball can adjust the force between the ball and the guide rail 1, thereby changing the preload of the linear guide rail and the magnitude of the sliding friction.

In an embodiment of the present invention, as shown in FIG. 3 , one end of the bottom plate portion 212 close to each of the outer end caps 23 is provided bare, so as to be elastically and telescopically connected with each of the outer end caps 23 .

It should be noted that one end of the bottom plate portion 212 close to each of the outer end caps 23 is bare, and the bottom plate portion 212 is made of plastic material, so it has a certain elastic elastic portion 215, which can be compatible with each The outer end cover 23 is connected elastically and telescopically, so that the tolerance in the length direction of the linear guide rail can be reduced.

It should be noted that the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present invention; and, for those of ordinary skill in the art, improvements can be made according to the above description Or transformation, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (9)

1. A linear guide rail, characterized in that it comprises a guide rail (1) and a slide block (2) that is slidably arranged on the guide rail (1); the slide block (2) includes a sliding bracket made of plastic material (21) and the retainer sleeved on the outside of the sliding bracket (21), the two sides of the sliding bracket (21) are provided with a plurality of hollow rolling grooves, and the retainer is spliced with each of the rolling grooves to form arc grooves, each of the arc grooves is provided with a plurality of rolling balls, and each of the balls is in rolling contact with the guide rail (1), and a plurality of circulation channels (221) are arranged in the retainer, Each of the circulation channels (221) is respectively connected with each of the arc grooves, so that each of the balls can perform circular rolling. 2. The linear guide rail according to claim 1, characterized in that, the sliding bracket (21) comprises two oppositely arranged end cover parts (211), and is connected and arranged between each of the end cover parts (211). The bottom plate part (212), two supporting parts (213) and two fixing parts (214), the bottom plate part (212) is arranged horizontally, and the supporting part (213) and the fixing part (214) are in turn They are arranged at intervals in an inverted U shape on both sides of the bottom plate part (212), so as to accommodate the guide rails (1) by clipping. 3. The linear guide rail according to claim 2, characterized in that first grooves (212A) are respectively provided on both sides of the bottom plate (212), and each support portion (213) is opposite to the bottom plate One side of (212) is provided with second groove (213A) respectively, and each described first groove (212A) is arranged opposite to each described second groove (213A) respectively to form described rolling groove, each described The support portion (213) is respectively provided with a third groove (213B) on one side facing each of the fixing portions (214), and each of the fixing portions (214) is oppositely provided with a fourth groove (214A), so as to The roll grooves are respectively formed with each of the third grooves (213B). 4. The linear guide rail according to claim 2, characterized in that, the retainer comprises two outer end caps (23) and a main body (22), and the two outer end caps (23) are respectively arranged on each The outer side of the end cover part (211), the main body (22) is sleeved on the outer periphery of the sliding bracket (21), and the side of the main body (22) facing the sliding bracket (21) is provided with multiple Each auxiliary groove is adapted to the gap on one side of each rolling groove to form the arc groove. 5. The linear guide rail according to claim 4, characterized in that, each of the outer end caps (23) is respectively buckled with each of the end cap parts (211) to form a plurality of reverse passages, and each of the reverse One end of the channel communicates with each of the circular arc grooves, and a circulation channel (221) communicated with the other end of each of the reverse channels is provided in the main body (22), so that each of the balls can circulate scroll. 6. The linear guide rail according to claim 2, characterized in that, first protrusions (11) are respectively provided on both sides of the guide rail (1), and each of the first protrusions (11) extends upwards A first inset portion (12) is provided, and each of the first protruding portions (11) is extended downward with a second inset portion (13), and each of the first protruding portions (11) is respectively connected to each The supporting parts (213) slide against each other, and each of the first indented parts (12) and each of the second indented parts (13) respectively rolls in contact with the balls located in the arc grooves. 7. The linear guide rail according to claim 6, characterized in that, each of the first indented parts (12) is provided with a snap-fit part extending upward, and the snap-fit part includes an inwardly chamfered chamfered surface (15 ) and the limiting groove (14) connected with the chamfered surface (15), the chamfered surface (15) and the limiting groove (14) and the fixing part (214) are away from the support frame One side slide fit setting. 8. The linear guide rail according to claim 2, characterized in that, both ends of each support portion (213) are respectively detachably arranged on each end cover portion (211). 9. The linear guide rail according to claim 2, characterized in that, one end of the bottom plate portion (212) close to each of the outer end caps (23) is bare, so as to be connected with each of the outer end caps (23) Elastic stretch connection.