Pulley bearing fixing structure of linear guide rail

Abstract

The utility model discloses a pulley bearing fixing structure of a linear guide rail. The pulley bearing fixing structure comprises a sliding rail and a sliding block module capable of sliding in the length direction of the sliding rail. Mounting grooves extending in the length direction of the sliding rail are formed in the two side walls of the sliding rail respectively; an optical shaft is mounted in each of the two mounting grooves, and one side of each optical shaft correspondingly protrudes out of the corresponding mounting groove; the sliding block module comprises a sliding block body and two pulley assemblies located on the two sides of the bottom face of the sliding block body respectively. Each pulley assembly comprises an installation block, a supporting block arranged on the top face of the installation block and a pulley bearing installed on the top face of the installation block through a bearing shaft. The top face of the supporting block abuts against the bottom face of the sliding block body, and the supporting block and the sliding block body can be locked through a positioning bolt. The upper end of the bearing shaft is connected with the sliding block main body; and each pulley bearing is correspondingly in sliding fit with one optical shaft. According to the utility model, the pulley bearing can be well positioned, and meanwhile, the loading force of the sliding block module can be dispersed, so that the pulley bearing is not easy to loosen.

Description

Technical Field

[0001] This utility model relates to the field of linear guide rail technology, specifically to a pulley bearing fixing structure for a linear guide rail. Background Technology

[0002] A guide rail is a device that supports, fixes, and guides moving devices or equipment while reducing friction. The longitudinal grooves or ridges on the surface of the guide rail can be used to guide and fix machine parts, specialized equipment, instruments, etc. Guide rails, also known as slide rails, linear guides, or linear slides, are used in linear reciprocating motion applications. They have a higher rated load than linear bearings and can withstand a certain amount of torque, enabling high-precision linear motion under high loads. They are used to guide and fix machine parts, specialized equipment, instruments, etc.

[0003] Authorization announcement number CN217814555U discloses a dual-axis linear guide eccentric adjustment structure, specifically including a slide rail and a slider. The slider is movably arranged along the length of the slide rail. The slide rail has a sliding groove, and a first mounting groove and a second mounting groove are symmetrically arranged on the front and rear side walls of the sliding groove. The sliding groove, the first mounting groove, and the second mounting groove all extend along the length of the slide rail. An optical shaft, adapted to the slider and extending along the length of the slide rail, is provided in both the first and second mounting grooves. One side of the optical shaft protrudes from the corresponding first and second mounting grooves to extend into the sliding groove. The slider includes a slider body, a first bearing sliding assembly, a second bearing sliding assembly, and dustproof oil seals at the left and right ends of the slider body. The first bearing sliding assembly includes a first bearing and a first rotating shaft. The second bearing sliding assembly includes a second bearing, a second rotating shaft, and an eccentric nut for adjusting the gap between the second bearing and the slide rail. The first bearing sliding assembly slides with the optical shaft in the first mounting groove via the first bearing. In this configuration, the second bearing sliding assembly slides with the optical shaft in the second mounting groove via the second bearing; both the first and second bearings are located within the sliding groove; the first rotating shaft is rotatably engaged with the first bearing, with one end of the first rotating shaft extending out of the first bearing and connected to the slider body; the second rotating shaft is rotatably engaged with the second bearing, with one end of the second rotating shaft extending out of the second bearing; the eccentric nut is rotatably mounted on the slider body and connected to one end of the second rotating shaft; the lower end face of the dustproof oil seal is provided with a slide rail groove, which is slidably connected to the slide rail; a sponge sheet is provided between the dustproof oil seal and the slide rail groove, and the sponge sheet is in sealing contact with the slide rail.

[0004] However, there is still room for improvement in the above-mentioned dual-axis linear guide eccentric adjustment structure. For example, the drawback of this design is that the first and second shafts need to position the first and second bearings while also bearing the load capacity of the entire slider, which makes the bearings prone to loosening during use.

[0005] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a pulley bearing fixing structure for a linear guide rail, which can distribute the load force of the slider module while positioning the pulley bearing, thereby making it less likely for the pulley bearing to loosen.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A pulley bearing fixing structure for a linear guide rail includes a slide rail and a slider module that can slide along the length direction of the slide rail; mounting grooves extending along the length direction are respectively provided on the two side walls of the slide rail; an optical shaft is matchedly installed in each of the two mounting grooves, with one side of each optical shaft correspondingly protruding from the mounting groove; the slider module includes a slider body and two pulley assemblies located on both sides of the bottom surface of the slider body; each pulley assembly includes a mounting block, a support block disposed on the top surface of the mounting block, and a bearing mounted on the top surface of the mounting block via a bearing shaft. The system includes pulley bearings; the top surface of the support block abuts against the bottom surface of the slider body, and the two can be locked together by positioning bolts; the lower end of the bearing shaft is connected to the mounting block, and the upper end of the bearing shaft is connected to the slider body; each pulley bearing is correspondingly slidably engaged with one of the optical axes; by using the positioning bolts to connect the support block and the slider body, and then using the bearing shafts passing through the pulley bearings to connect the mounting block and the slider body respectively, the load force of the slider module can be distributed while the pulley bearings are properly positioned, making it less likely for the pulley bearings to loosen. This configuration ensures the stability of the pulley bearings.

[0009] Furthermore, one support block is provided; two pulley bearings are provided; the two pulley bearings are distributed on both sides of the support block. This arrangement improves the connection stability between the support block, the mounting block, and the slider body.

[0010] Furthermore, two support blocks are provided, spaced apart along the length of the slide rail; three pulley bearings are provided; and two support blocks are sequentially spaced between the three pulley bearings. Similarly, the above arrangement also ensures the stability of the pulley bearings.

[0011] Furthermore, the width between the two sides of the mounting block is greater than the maximum width of the pulley bearing, and the side of the mounting block is further outward than the side of the pulley bearing. This arrangement effectively protects the pulley bearing.

[0012] Furthermore, the width between the two sides of the support block is equal to the width between the two sides of the mounting block, and the side edges of the support block are aligned with the side edges of the mounting block. Similarly, this configuration effectively protects the pulley bearing.

[0013] Furthermore, the support block and the mounting block are integrally formed.

[0014] Furthermore, a through hole extending vertically through the mounting block and the support block is correspondingly provided on both the mounting block and the support block; a threaded hole for cooperating with the positioning bolt is provided on the bottom surface of the slider body, and the shank of the positioning bolt passes through the through hole and is threaded into the threaded hole. This arrangement facilitates the positioning of the mounting block and the slider body.

[0015] Furthermore, a first limiting hole and a second limiting hole are respectively provided on the bottom surface of the slider body and the top surface of the mounting block; the upper and lower ends of the bearing shaft are respectively inserted into the first limiting hole and the second limiting hole. This arrangement facilitates the positioning of the bearing shaft and the pulley bearing.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention connects the support block and the slider body using positioning bolts, and then connects the mounting block and the slider body using a bearing shaft passing through the pulley bearing. In this way, after the pulley bearing is connected to the mounting block and the slider body through the bearing shaft, it is also equipped with positioning bolts for locking the support block and the slider body. Thus, while the pulley bearing is positioned using the bearing shaft, the load force of the slider module can be distributed using the positioning bolts to avoid all the load force acting on the bearing shaft, thereby making the pulley bearing less likely to loosen. Attached Figure Description

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

[0019] Figure 2 This is an exploded view of Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0021] Figure 4 This is an exploded view of Embodiment 2 of this utility model.

[0022] Figure Labels

[0023] 1. Slide rail; 11. Mounting groove; 12. Optical axis; 2. Slider body; 3. Pulley assembly; 31. Mounting block; 32. Support block; 33. Bearing shaft; 34. Pulley bearing; 341. Inner ring; 35. Positioning bolt; 36. Through hole. Detailed Implementation

[0024] The utility model will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely exemplary and does not limit the scope of protection of the utility model.

[0025] Example 1:

[0026] like Figures 1-2 As shown, a pulley bearing fixing structure for a linear guide rail includes a slide rail 1 and a slider module that can slide back and forth along the length of the slide rail 1.

[0027] Mounting grooves 11 extending along their length are respectively provided on the two side walls of the slide rail 1; an optical axis 12 is matchedly installed in each of the two mounting grooves 11, and one side of each optical axis 12 protrudes from the mounting groove 11.

[0028] The slider module includes a slider body 2 and two pulley assemblies 3 located on both sides of the bottom surface of the slider body 2. Each pulley assembly 3 includes a mounting block 31, a support block 32 disposed on the top surface of the mounting block 31, and a pulley bearing 34 mounted on the top surface of the mounting block 31 via a bearing shaft 33. The top surface of the support block 32 abuts against the bottom surface of the slider body 2, and the two can be locked together by a positioning bolt 35. The lower end of the bearing shaft 33 is connected to the mounting block 31, and the upper end of the bearing shaft 33 is connected to the slider body 2. Each pulley bearing 34 is correspondingly slidably engaged with one optical shaft 12, that is, the pulley bearings 34 in the two pulley assemblies 3 are correspondingly slidably engaged with two optical shafts 33.

[0029] Therefore, this utility model uses positioning bolts 35 to connect the support block 32 and the slider body 2, and then uses the bearing shaft 33 passing through the pulley bearing 34 to connect the mounting block 31 and the slider body 2 respectively. In this way, after the pulley bearing 34 is connected to the mounting block 31 and the slider body 2 through the bearing shaft 33, it is also provided with positioning bolts for locking the support block 32 and the slider body 2. Thus, while positioning the pulley bearing 34 with the bearing shaft 33, the positioning bolts 35 can be used to distribute the load force of the slider module, so as to avoid all the load force acting only on the bearing shaft 33, thereby making the pulley bearing 34 less likely to loosen.

[0030] In this embodiment, there is one support block 32 and two pulley bearings 34. The two pulley bearings 34 are distributed on both sides of the support block 32. This design makes the force more even when the two pulley assemblies 3 bear external force. In addition, the support block 32 can also improve the connection stability between the mounting block 31 and the slider body 2, thereby improving the stability of the pulley bearings 34 to a certain extent and ensuring their accuracy.

[0031] In this embodiment, the width between the two sides of the mounting block 31 is greater than the maximum width of the pulley bearing 34, and the side of the mounting block 31 is further outward than the side of the pulley bearing 34. Therefore, through the above design, the mounting block 31 protrudes further outward than the pulley bearing 34, so that when the slider module is accidentally impacted by external force, the mounting block 31 can effectively act as a buffer, making it difficult for external force to directly hit the pulley bearing 34. In other words, the above design can effectively protect the pulley bearing 34.

[0032] In this embodiment, the width between the two sides of the support block 32 is equal to the width between the two sides of the mounting block 31, and the side edges of the support block 32 are aligned with the side edges of the mounting block 31. Similarly, through the above design, the support block 32 can also be used to protect the pulley bearing 34, making it less likely for external forces to directly impact the pulley bearing 34.

[0033] In this embodiment, for ease of manufacturing, the support block 32 and the mounting block 31 are integrally formed.

[0034] A through hole 36 extending vertically through the mounting block 31 and the support block 32 is provided on each of them. A threaded hole for cooperating with a positioning bolt 35 is provided on the bottom surface of the slider body 2. The shank of the positioning bolt 35 passes through the through hole 36 and is threaded into the threaded hole. The above arrangement makes it easy to position the mounting block 31 and the slider body 2.

[0035] A first limiting hole and a second limiting hole are respectively provided on the bottom surface of the slider body 2 and the top surface of the mounting block 31; the upper and lower ends of the bearing shaft 33 are respectively inserted into the first limiting hole and the second limiting hole. The above arrangement can facilitate the positioning of the bearing shaft 33 and the pulley bearing 34.

[0036] In addition, the bearing shaft 33 and the inner ring 341 of the roller bearing 34 are interference-fitted to ensure their stability. When the roller bearing 34 is in use, it utilizes the rollers located on the outer ring to slide against the optical shaft 12.

[0037] During assembly, the pulley bearing 34 is first fitted onto the bearing shaft 33, and the lower end of the bearing shaft 33 is inserted into the second limiting hole. Next, the support block 32 is abutted against the slider body 2, and the two are connected by the positioning bolt 35. At this point, the pulley bearing 34 is precisely slidably connected to the optical shaft 12, and the upper end of the bearing shaft 33 is correspondingly inserted into the first limiting hole. Therefore, this invention also eliminates the need for adjustment of the pulley bearing 34, as it is already assembled upon completion, making it very convenient to use.

[0038] Example 2:

[0039] like Figures 3-4 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, two support blocks 32 are provided, spaced apart along the length of the slide rail 1; three pulley bearings 34 are provided; and two support blocks 32 are sequentially spaced between the three pulley bearings 34. Therefore, this embodiment employs a design of three pulley bearings 34 plus two support blocks 32 to meet the usage needs of different users.

[0040] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A pulley bearing fixing structure for a linear guide rail, characterized in that: It includes a slide rail and a slider module that can slide along the length of the slide rail; Mounting grooves extending along the length direction are respectively provided on the two side walls of the slide rail; an optical axis is matchedly installed in each of the two mounting grooves, and one side of each optical axis protrudes from the mounting groove accordingly. The slider module includes a slider body and two pulley assemblies located on opposite sides of the bottom surface of the slider body. Each pulley assembly includes a mounting block, a support block disposed on the top surface of the mounting block, and a pulley bearing mounted on the top surface of the mounting block via a bearing shaft. The top surface of the support block abuts against the bottom surface of the slider body, and the two can be locked together by positioning bolts. The lower end of the bearing shaft is connected to the mounting block, and the upper end of the bearing shaft is connected to the slider body. Each pulley bearing is correspondingly slidably engaged with one of the optical axes. By using the positioning bolts to connect the support block and the slider body, and then using the bearing shaft passing through the pulley bearing to connect the mounting block and the slider body respectively, the load force of the slider module can be distributed while the pulley bearing is positioned, making it less likely for the pulley bearing to loosen.

2. The pulley bearing fixing structure of the linear guide rail according to claim 1, characterized in that: There is one support block; there are two pulley bearings; the two pulley bearings are distributed on both sides of the support block.

3. The pulley bearing fixing structure of the linear guide rail according to claim 2, characterized in that: The support block is provided in two spaced-apart portions along the length of the slide rail; the pulley bearing is provided in three portions; the two support blocks are sequentially spaced apart between the three pulley bearings.

4. The pulley bearing fixing structure of the linear guide rail according to claim 1, characterized in that: The width between the two sides of the mounting block is greater than the maximum width of the pulley bearing, and the side of the mounting block is further outward than the side of the pulley bearing.

5. The pulley bearing fixing structure of the linear guide rail according to claim 4, characterized in that: The width between the two sides of the support block is equal to the width between the two sides of the mounting block, and the side of the support block is aligned with the side of the mounting block.

6. The pulley bearing fixing structure of the linear guide rail according to claim 1, characterized in that: The support block and the mounting block are integrally formed.

7. The pulley bearing fixing structure of the linear guide rail according to claim 1, characterized in that: A through hole extending vertically and passing through the mounting block and the support block is provided on the mounting block and the support block respectively; a threaded hole that mates with the positioning bolt is provided on the bottom surface of the slider body, and the shank of the positioning bolt passes through the through hole and is threaded into the threaded hole.

8. The pulley bearing fixing structure of the linear guide rail according to claim 1, characterized in that: A first limiting hole and a second limiting hole are respectively provided on the bottom surface of the slider body and the top surface of the mounting block; the upper and lower ends of the bearing shaft are respectively inserted into the first limiting hole and the second limiting hole.

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