Circular guide rail

Abstract

The present invention discloses an annular guide rail, comprising a plurality of straight segments and a plurality of arc segments, wherein the plurality of straight segments and the plurality of arc segments are sequentially connected at intervals to form an annular structure; each straight segment is equipped with two first guide rails extending along the length direction of the straight segment, the two first guide rails are respectively located on both sides of the straight segment, and / or each arc segment is equipped with two second guide rails extending along the arc direction of the arc segment, the two second guide rails are respectively located on both sides of the arc segment. The present invention can reduce manufacturing costs.

Description

Technical Field

[0001] The present invention relates to the field of track technology, in particular to an annular guide rail. Background Art

[0002] The circular guide rail usually includes a track and a sliding device. The track is a ring-shaped structure. The sliding device can slide in a ring on the track. The sliding device is generally equipped with an intelligent device, which moves with the sliding device to perform intelligent operations.

[0003] Both side walls of the track are provided with convex strips extending along the length direction of the track, and the sliding device is provided with pulleys for sliding on the convex strips. When the sliding device slides along the track, the pulleys on the sliding device roll in contact with the convex strips, so that the sliding device can move smoothly.

[0004] In the current annular guide rails, the convex strips are generally formed integrally with the rails. When manufacturing the rails, a series of complex process flows such as cold drawing, heat treatment, and grinding are required to form convex strips that meet the requirements on the rails, which makes the processing of the rails more complicated. In addition, a five-axis machining center is required for the grinding process, and the equipment cost is also high, which makes the current manufacturing cost of the annular guide rails relatively high.

[0005] Moreover, the current tracks are generally narrower because the tracks have arc sections. If the arc sections are narrower, when the sliding device passes through the arc sections, the rollers on one side of the sliding device can all be detached from the track, so that the sliding device can smoothly pass through the arc sections. If the track is wider, the arc sections are also wider, and when the sliding device passes through the arc sections, the rollers on one side of the sliding device are not easy to completely detach from the track, so that the sliding device is easily stuck on the arc sections, thereby affecting the normal operation of the annular guide rail. Summary of the invention

[0006] In view of this, an object of the present invention is to provide an annular guide rail which can reduce manufacturing costs.

[0007] Based on the above purpose, the present invention provides an annular guide rail, comprising a plurality of straight segments and a plurality of arc segments, wherein the plurality of straight segments and the plurality of arc segments are sequentially connected at intervals to form an annular structure;

[0008] Each straight segment is equipped with two first guide rails extending along the length direction of the straight segment, and the two first guide rails are respectively located on both sides of the straight segment, and each arc segment is equipped with two second guide rails extending along the arc direction of the arc segment, and the two second guide rails are respectively located on both sides of the arc segment;

[0009] Any adjacent straight line segments and arc segments are connected by connectors;

[0010] The annular guide rail further includes a sliding device capable of annularly sliding along an annular structure formed by a plurality of straight segments and a plurality of arc segments connected in sequence at intervals, and the sliding device is provided with two first rollers and two second rollers, the two first rollers are located on one side of the sliding device, and the two second rollers are located on the other side of the sliding device;

[0011] When the sliding device slides on the straight segment, the two first rollers are always in rolling contact with one first guide rail on the straight segment, and the two second rollers are always in rolling contact with another first guide rail on the straight segment;

[0012] When the sliding device enters the arc segment from the straight segment, the front one of the two first rollers is always in rolling contact with a second guide rail on the arc segment, the rear one of the two first rollers is always in rolling contact with a first guide rail on the straight segment, the front one of the two second rollers is always in rolling contact with another second guide rail on the arc segment until the sliding device completely enters the arc segment, and the rear one of the two second rollers is in a suspended state until the sliding device completely enters the arc segment;

[0013] When the sliding device slides on the arc segment, the two first rollers are always in rolling contact with one second guide rail on the arc segment, and the two second rollers are always in rolling contact with another second guide rail on the arc segment;

[0014] When the sliding device enters the straight section from the arc section, the front one of the two first rollers is always in rolling contact with a first guide bar on the straight section, the rear one of the two first rollers is always in rolling contact with a second guide bar on the arc section, the front one of the two second rollers is in a suspended state until the sliding device completely enters the straight section, and the rear one of the two second rollers is always in rolling contact with the other second guide bar on the arc section until the sliding device completely enters the straight section.

[0015] Preferably, both side walls of each straight line segment are provided with a groove extending along the length direction of the straight line segment, and a first guide rail is embedded in each groove.

[0016] Preferably, the first guide rails are all cylindrical, and the grooves are all arc-shaped grooves larger than a semicircle.

[0017] Preferably, each second guide rail is mounted and fixed on the arc segment by fasteners.

[0018] Preferably, each arc segment is an integral structure, and each arc segment is manufactured by die casting.

[0019] Preferably, each arc segment is formed by connecting a plurality of sub-arc segments, and each sub-arc segment is manufactured by powder metallurgy.

[0020] Preferably, each straight line segment is formed from an aluminum profile.

[0021] From the above description, it can be seen that in the annular guide rail provided by the present invention, the first guide bar and the straight segment are not integrated, and the first guide bar is assembled on the straight segment; the second guide bar and the arc segment are also not integrated, and the second guide bar is assembled on the annular segment. In this way, when processing the straight segment and the arc segment, there is no need to perform complicated processing on the straight segment and the arc segment, and there is no need to use a five-axis machining center for grinding. The straight segment is formed by aluminum profiles, and then the first guide bar is assembled on the straight segment. The arc segment is manufactured by die-casting, and then the second guide bar is assembled on the arc segment. This simplifies the processing technology of the annular guide rail of the present invention and greatly reduces the processing cost.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the annular guide rail proposed in the first embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of a straight line segment proposed in Embodiment 1 of the present invention;

[0026] Figure 3 A cross-sectional view of an arc segment proposed in Embodiment 1 of the present invention;

[0027] Figure 4 is a cross-sectional view of another arc segment proposed in the first embodiment of the present invention;

[0028] Figure 5 is a cross-sectional view of yet another arc segment proposed in the first embodiment of the present invention;

[0029] Figure 6 is a schematic structural diagram of a sliding device proposed in Embodiment 1 of the present invention;

[0030] Figure 7 is a schematic structural diagram of the sliding device proposed in the first embodiment of the present invention when sliding on a straight line segment;

[0031] Figure 8is a schematic structural diagram of the sliding device proposed in the first embodiment of the present invention when it enters the arc segment from the straight segment;

[0032] Fig. 9 is a schematic structural diagram of the sliding device proposed in the first embodiment of the present invention when sliding on an arc segment;

[0033] Fig.10 is a schematic structural diagram of the sliding device proposed in the first embodiment of the present invention when entering a straight line segment from an arc segment;

[0034] Fig.11 is a schematic structural diagram of the annular guide rail proposed in the second embodiment of the present invention;

[0035] Fig.12 is a cross-sectional view of a straight line segment of the annular guide rail provided in the second embodiment of the present invention;

[0036] Fig.13 is a cross-sectional view of an arc segment of an annular guide rail provided in the second embodiment of the present invention;

[0037] Fig.14 is a schematic structural diagram of the annular guide rail proposed in Embodiment 3 of the present invention;

[0038] Fig.15 is a cross-sectional view of a straight line segment of the annular guide rail proposed in the third embodiment of the present invention;

[0039] Fig.16 It is a cross-sectional view of the arc segment of the annular guide rail proposed in the third embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0041] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can be applied to other similar scenarios based on these drawings without any creative work. In addition, it can be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in this field related to the contents disclosed in this application, some design, manufacturing or production changes based on the technical contents disclosed in this application are just conventional technical means, and should not be understood as the contents disclosed in this application are insufficient.

[0042] Mention of "embodiment" in the present application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application; the appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments; it is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in the present application may be combined with other embodiments without conflict.

[0043] Embodiment 1

[0044] Depend on Figure 1 , Figure 6 As shown, the annular guide rail in this embodiment includes a plurality of straight segments 10, a plurality of arc segments 20 and a sliding device 30. The plurality of straight segments 10 and the plurality of arc segments 20 are connected in sequence at intervals to form an annular structure. The sliding device 30 can slide in an annular structure along the annular structure formed by the plurality of straight segments 10 and the plurality of arc segments 20 connected in sequence at intervals. The sliding device 30 includes a support frame 33. A motor 34, a gear 35, two first rollers 31 and two second rollers 32 are provided on the support frame 33. The motor 34 is used to drive the gear 35 to rotate.

[0045] The annular guide rail may be a rounded rectangular structure formed by four straight segments 10 and four arc segments 20 connected in sequence at intervals, or may be a waist-shaped hole structure formed by two straight segments 10 and two arc segments 20 connected in sequence at intervals.

[0046] Each straight segment 10 is provided with a first rack 13 extending along the length direction of the straight segment 10, and each arc segment 20 is provided with a second rack 23 extending along the length direction of the arc segment 20. The first rack 13 and the second rack 23 are connected in sequence at intervals to form an annular structure. The gear 35 on the sliding device 30 can mesh with the first rack 13 and the second rack 23. When the motor 34 drives the gear 35 to rotate, the gear 35 moves along the annular structure formed by the first rack 13 and the second rack 23 connected in sequence at intervals, thereby causing the sliding device 30 to move in an annular structure.

[0047] like Figure 2 As shown, each straight segment 10 is equipped with two first guide rails 11 extending along the length direction of the straight segment 10. The two first guide rails 11 are respectively located on the two side walls of the straight segment 10. The two first guide rails 11 are parallel to each other and located on the same horizontal plane.

[0048] When the sliding device 30 slides along the straight section 10 , the two first rollers 31 on the sliding device 30 roll in contact with one of the first guide rails 11 , and the two second rollers 32 on the sliding device 30 roll in contact with the other first guide rail 11 .

[0049] like Figure 3 As shown, each arc segment 20 is equipped with two second guide rails 21 extending along the arc direction of the arc segment 20, and the two second guide rails 21 are respectively located on both sides of the top of the arc segment 20. Two upwardly symmetrical inclined surfaces are arranged on the two surfaces facing away from each other of the two second guide rails 21, and the two inclined surfaces on each second guide rail 21 are connected by a vertical plane.

[0050] like Figure 4 As shown, the cross section of the second guide rail 21 can be another shape. In this case, two surfaces of the two second guide rails 21 that are away from each other are provided with two vertically symmetrical inclined surfaces, and the two inclined surfaces on each second guide rail 21 are connected by an arc surface.

[0051] like Figure 5 As shown, the cross section of the second guide rail 21 can also be another shape. In this case, the two surfaces of the two second guide rails 21 that are away from each other are both arc surfaces.

[0052] A groove 12 extending along the length direction of the straight section 10 is provided on both side walls of each straight section 10, and two first guide rails 11 are respectively embedded in the two grooves 12, that is, a first guide rail 11 is embedded in each groove 12. In this way, when the first guide rail 11 is assembled on the straight section 10, it is only necessary to embed the first guide rail 11 into the groove 12, so that the first guide rail 11 is easy to assemble.

[0053] Of course, the first guide rail 11 can also be assembled to the straight segment 10 in other ways, not limited to embedding, as long as the first guide rail 11 can be fixed to the straight segment 10.

[0054] The first guide rails 11 are all cylindrical, the grooves 12 are all arc-shaped grooves larger than a semicircle, and the peripheral wall of the first guide rail 11 is consistent with the inner wall of the groove 12, so that after the first guide rail 11 is embedded in the groove 12, the first guide rail 11 is firmly fixed.

[0055] Of course, the cross-sectional shape of the first guide rail 11 is not limited to a cylindrical shape, as long as the pulley of the sliding device 30 can slide forward by rolling contact with the first guide rail.

[0056] Each second guide rail 21 is fixed to the arc segment 20 by means of fasteners, so that the second guide rail 21 is conveniently fixed.

[0057] Any adjacent straight segments 10 and arc segments 20 are connected by connecting pieces, so that the straight segments 10 and arc segments 20 are separate, and the straight segments 10 and arc segments 20 can be manufactured separately and then connected, so as to facilitate processing.

[0058] Each arc segment 20 is an integrated structure, and each arc segment 20 is manufactured by die-casting. In this case, each arc segment 20 is an integral whole.

[0059] Of course, each arc segment 20 can also be composed of multiple sub-arc segments connected together, and each sub-arc segment is made of powder metallurgy. In this case, each arc segment 20 is divided into multiple sub-arc segments, and the sub-arc segments are shorter in length. The sub-arc segments can be made of powder metallurgy, thereby further reducing the manufacturing cost of the arc segment 20.

[0060] Each straight line segment 10 is formed of an aluminum profile, which is relatively cheap, so that the manufacturing cost of the straight line segment 10 is relatively low.

[0061] When the sliding device 30 slides on the straight section 10 , the two first rollers 31 are always in rolling contact with one first guide rail 11 on the straight section 10 , and the two second rollers 32 are always in rolling contact with the other first guide rail 11 on the straight section 10 .

[0062] The annular guide rail also includes a sliding device 30 that can slide in an annular structure formed by a plurality of straight segments 10 and a plurality of arc segments 20 that are sequentially spaced apart. Two first rollers 31 and two second rollers 32 are provided on the sliding device 30. The two first rollers 31 are located on one side of the sliding device 30, and the two second rollers 32 are located on the other side of the sliding device 30.

[0063] like Figure 7 As shown, when the sliding device 30 slides on the straight section 10 , the two first rollers 31 are always in rolling contact with one first guide rail 11 on the straight section 10 , and the two second rollers 32 are always in rolling contact with the other first guide rail 11 on the straight section 10 .

[0064] like Figure 8 As shown, when the sliding device 30 enters the arc segment 20 from the straight segment 10, the front one of the two first rollers 31 is always in rolling contact with a second guide bar 21 on the arc segment 20, the rear one of the two first rollers 31 is always in rolling contact with a first guide bar 11 on the straight segment 10, the front one of the two second rollers 32 is always in rolling contact with the other second guide bar 21 on the arc segment 20 until the sliding device 30 completely enters the arc segment 20, and the rear one of the two second rollers 32 is in a suspended state until the sliding device 30 completely enters the arc segment 20. In this way, when the sliding device 30 enters the arc segment 20 from the straight segment 10, the sliding device 30 only rolls through three rollers, which facilitates the sliding device 30 to smoothly enter the arc segment 20 from the straight segment 10.

[0065] like Fig. 9As shown, when the sliding device 30 completely enters the arc segment 20, the sliding device 30 slides on the arc segment 20, the two first rollers 31 are always in rolling contact with a second guide rail 21 on the arc segment 20, and the two second rollers 32 are always in rolling contact with another second guide rail 21 on the arc segment 20.

[0066] like Fig.10 As shown, when the sliding device 30 enters the straight section 10 from the arc section 20, the front one of the two first rollers 31 is always in rolling contact with a first guide bar 11 on the straight section 10, the rear one of the two first rollers 31 is always in rolling contact with a second guide bar 21 on the arc section 20, the front one of the two second rollers 32 is in a suspended state until the sliding device 30 completely enters the straight section, and the rear one of the two second rollers 32 is always in rolling contact with the other second guide bar 21 on the arc section 20 until the sliding device 30 completely enters the straight section. In this way, when the sliding device 30 enters the straight section 10 from the arc section 20, the sliding device 30 only rolls through three rollers, which facilitates the sliding device 30 to smoothly enter the straight section 10 from the arc section 20.

[0067] In this way, when the sliding device 30 enters the arc segment 20 from the straight segment 10 or when the sliding device 30 enters the straight segment 10 from the arc segment 20, it always moves only through three rollers. In this way, it can avoid the sliding device 30 from being stuck when entering the arc segment 20 from the straight segment 10 or when entering the straight segment from the arc segment 20.

[0068] Embodiment 2

[0069] like Fig.11 As shown, the annular guide rail of this embodiment includes a plurality of straight segments 10 and a plurality of arc segments 20, and the plurality of straight segments 10 and the plurality of arc segments 20 are sequentially connected at intervals to form an annular structure.

[0070] like Fig.12 As shown, each straight segment 10 is equipped with two first guide rails 11 extending along the length direction of the straight segment 10, and the two first guide rails 11 are respectively located on both sides of the straight segment 10. Since the first guide rail 11 and the straight segment 10 are not integrated, the first guide rail 11 is assembled on the straight segment 10. In this way, when processing the straight segment 10, there is no need to perform a complicated processing technology on the straight segment 10. The straight segment 10 is formed by an aluminum profile, and then the first guide rail 11 is assembled on the straight segment 10, thereby simplifying the processing technology of the annular guide rail of the present invention and greatly reducing the processing cost.

[0071] like Fig.13As shown, each arc segment 20 is integrally formed with two second guide rails 21 extending along the arc direction of the arc segment 20 , and the two second guide rails 21 are respectively located on both sides of the arc segment 20 . The arc segment 20 needs to be integrally formed with the second guide rails 21 by grinding.

[0072] Embodiment 3

[0073] like Fig.14 As shown, the annular guide rail of this embodiment includes a plurality of straight segments 10 and a plurality of arc segments 20, and the plurality of straight segments 10 and the plurality of arc segments 20 are sequentially connected at intervals to form an annular structure.

[0074] like Fig.15 As shown, each arc segment 20 is equipped with two second guide rails 21 extending along the arc direction of the arc segment 20, and the two second guide rails 21 are respectively located on both sides of the arc segment 20. Since the second guide rail 21 is not integrated with the arc segment 20, the second guide rail 21 is assembled on the arc segment 20. In this way, when processing the arc segment 20, there is no need to perform complex processing on the arc segment 20, and there is no need to use a five-axis machining center for grinding. The straight segment 10 is manufactured by powder metallurgy, and then the second guide rail 21 is assembled on the arc segment 20, thereby simplifying the processing technology of the annular guide rail of the present invention and greatly reducing the processing cost.

[0075] like Fig.16 As shown, each straight segment 10 is integrally formed with two first guide rails 11 extending along the length direction of the straight segment 10 , and the two first guide rails 11 are respectively located on both sides of the straight segment 10 . The straight segment 10 needs to be integrally formed with the first guide rails 11 by grinding.

[0076] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A circular guide rail, characterized in that: It comprises a plurality of straight segments (10) and a plurality of arc segments (20), wherein the plurality of straight segments (10) and the plurality of arc segments (20) are sequentially connected at intervals to form a ring structure; Each straight segment (10) is equipped with two first guide rails (11) extending along the length direction of the straight segment (10), and the two first guide rails (11) are respectively located on both sides of the straight segment (10); and each arc segment (20) is equipped with two second guide rails (21) extending along the arc direction of the arc segment (20), and the two second guide rails (21) are respectively located on both sides of the arc segment (20); Any adjacent straight line segments (10) and arc segments (20) are connected via a connecting piece; The annular guide rail further comprises a sliding device (30) capable of annularly sliding along an annular structure formed by a plurality of straight segments (10) and a plurality of arc segments (20) connected in sequence at intervals, wherein the sliding device (30) is provided with two first rollers (31) and two second rollers (32), wherein the two first rollers (31) are located on one side of the sliding device (30), and the two second rollers (32) are located on the other side of the sliding device (30); When the sliding device (30) slides on the straight section (10), the two first rollers (31) are always in rolling contact with a first guide rail (11) on the straight section (10), and the two second rollers (32) are always in rolling contact with another first guide rail (11) on the straight section (10); When the sliding device (30) enters the arc segment (20) from the straight segment (10), the front one of the two first rollers (31) is always in rolling contact with a second guide rail (21) on the arc segment (20), the rear one of the two first rollers (31) is always in rolling contact with a first guide rail (11) on the straight segment (10), the front one of the two second rollers (32) is always in rolling contact with the other second guide rail (21) on the arc segment (20) until the sliding device (30) completely enters the arc segment (20), and the rear one of the two second rollers (32) is in a suspended state until the sliding device (30) completely enters the arc segment (20); When the sliding device (30) slides on the arc segment (20), the two first rollers (31) are always in rolling contact with a second guide rail (21) on the arc segment (20), and the two second rollers (32) are always in rolling contact with another second guide rail (21) on the arc segment (20); When the sliding device (30) enters the straight section (10) from the arc section (20), the front one of the two first rollers (31) is always in rolling contact with a first guide rail (11) on the straight section (10), the rear one of the two first rollers (31) is always in rolling contact with a second guide rail (21) on the arc section (20), the front one of the two second rollers (32) is in a suspended state until the sliding device (30) completely enters the straight section, and the rear one of the two second rollers (32) is always in rolling contact with the other second guide rail (21) on the arc section (20) until the sliding device (30) completely enters the straight section.

2. The annular guide rail according to claim 1, characterized in that: A groove (12) extending along the length direction of the straight line segment (10) is provided on both side walls of each straight line segment (10), and a first guide rail (11) is embedded in each groove (12).

3. The annular guide rail according to claim 2, characterized in that: The first guide rails (11) are all cylindrical, and the grooves (12) are all arc-shaped grooves larger than a semicircle.

4. The annular guide rail according to claim 1, characterized in that: Each second guide rail (21) is fixed on the arc segment (20) by means of fasteners.

5. The annular guide rail according to claim 1, characterized in that: Each arc segment (20) is an integrated structure, and each arc segment (20) is manufactured by die casting.

6. The annular guide rail according to claim 1, characterized in that: Each arc segment (20) is formed by connecting a plurality of sub-arc segments, and each sub-arc segment is manufactured by powder metallurgy.

7. The annular guide rail according to claim 1, characterized in that: Each straight line segment (10) is formed by aluminum profiles.

Images