Inter-roller doffer retention chain

Abstract

The utility model relates to the technical field of linear guide rails, in particular to an inter-roller doffer retaining chain which comprises a plurality of spacing parts, a plurality of guide rails and a plurality of guide rails. The roller is rotationally connected to the spacing part; the connecting parts are connected between the adjacent spacing parts; wherein each interval part is provided with two rollers, the arrangement direction of the two rollers on the same interval part is perpendicular to the arrangement direction of the interval parts, one roller is in rolling fit with the four rollers on the two sides of the roller, and the four rollers on the two sides of one roller are used for limiting the roller. The rollers are arranged between the adjacent pin rollers so as to separate the adjacent pin rollers, four-line contact is formed between the four rollers and the pin rollers, friction between the adjacent pin rollers is avoided, transmission between the pin rollers is achieved through rolling friction between the pin rollers and the rollers, and stable operation of the pin rollers is kept.

Description

Technical Field

[0001] The present application relates to the technical field of linear guide rails, and in particular to a small roller retaining chain between rollers. Background Art

[0002] Rolling linear guides are widely used in various mechatronic devices. Rolling linear guides use rolling motion between rollers arranged in the slider to achieve linear movement along the guide rail.

[0003] During the movement of the full-roller type slider, adjacent rollers may collide with each other, which will produce relatively loud noise. In severe cases, the roller surface will become hot or even damaged. In addition, since the rollers roll in the same direction (clockwise or counterclockwise), there will be friction between the rollers at the contact points, which will increase the friction of the rollers and cause the slider to jam. Utility Model Content

[0004] The technical problem that the utility model aims to solve is that adjacent rollers are prone to collision when the slider moves.

[0005] To this end, the utility model provides a small roller retaining chain between rollers.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A small roller retaining chain between rollers, comprising:

[0008] a plurality of spacers, wherein one of the spacers is disposed between adjacent rollers;

[0009] a roller rotatably connected to the spacer;

[0010] a connecting portion connecting adjacent spacing portions;

[0011] Among them, two rollers are provided on each spacer, and the arrangement direction of the two rollers on the same spacer is perpendicular to the arrangement direction of the spacer. One roller and the four rollers on both sides of it are in rolling cooperation, and the four rollers on both sides of one roller are used to limit the roller.

[0012] Furthermore, the arrangement direction of the plurality of spacers is parallel to the arrangement direction of the plurality of rollers, and the arrangement direction of the plurality of rollers on the plurality of spacers that are located on the same side of the roller arrangement direction is parallel to the arrangement direction of the plurality of rollers.

[0013] Furthermore, the height a between two rollers on the same spacer is smaller than the diameter l of the roller.

[0014] Furthermore, a distance b between the axis of the drum and the axis of the roller adjacent thereto is greater than a radius r of the roller.

[0015] Furthermore, a connecting boss for connecting to the roller is provided on the spacer, and a mounting hole is coaxially provided at the end of the roller. The connecting boss is plugged into the mounting hole, and the end face area of ​​the boss close to the axis of the roller is less than or equal to the end face area of ​​the other end.

[0016] Furthermore, the connecting portion is spaced apart from the end portion of the roller.

[0017] Furthermore, a convex block is provided on the side wall of the connecting portion facing the end of the roller, and the convex block is in point contact with the end of the roller.

[0018] Furthermore, the bumps are configured as spherical bumps.

[0019] Furthermore, the protrusions on the connecting parts at both ends of one of the rollers are arranged opposite to each other.

[0020] Furthermore, a plurality of protrusions are provided on each of the connecting parts, and the protrusions on the connecting parts are symmetrically arranged on both sides of the axis of the roller opposite thereto.

[0021] The beneficial effect of the present invention is that the present invention separates the adjacent rollers by arranging rollers between the adjacent rollers to avoid friction between the adjacent rollers, and four rollers are arranged on both sides of the rollers. The friction form is rolling friction, so the friction force is very small, and the rolling friction can make the movement form of the roller rolling rather than sliding, with small fluctuations and smoother operation. Four-line contact is formed between the four rollers and the rollers, and the rollers have good stability and high retention rate.

[0022] Furthermore, since the rolling directions of the contact points between the roller and the drum are the same, the lubricating oil on the rolling surface of the roller is avoided from being scraped off, and the lubrication effect of the roller can be kept unchanged.

[0023] Two hemispherical protrusions are provided between the connecting portion and the end face of the roller, forming point contact with the side face of the roller, thereby reducing the frictional resistance of the connecting portion to the side face of the roller, preventing the roller from tilting during movement, and avoiding the lubricating oil on the side face of the roller from being scraped off by the connecting portion, thereby improving the lubrication effect of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the installation relationship between the roller and the small roller holding chain between the rollers in the utility model.

[0026] Figure 2It is a structural diagram showing the positional relationship between the partition part and the connecting part in the present invention.

[0027] Figure 3 It is a structural schematic diagram of a roller adapted to a cylindrical boss in the utility model.

[0028] Figure 4 It is a structural schematic diagram of a roller adapted to a conical boss in the utility model.

[0029] Figure 5 It is a structural schematic diagram of a roller adapted to a truncated cone-shaped boss in the utility model.

[0030] Figure 6 It is a schematic diagram of the positional relationship between the roller and the drum in the utility model.

[0031] In the figure: 1, spacer; 11, roller; 12, mounting hole; 2, connecting part; 21, protrusion; 3, accommodating space; 4, roller. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] Reference Figures 1-6 A roller-to-roller small roller retaining chain includes a plurality of spacer parts 1 and a connecting part 2 for connecting adjacent spacer parts 1.

[0036] Specifically, each spacer 1 is rotatably connected to two rollers 11, and a connecting boss for connecting the rollers 11 is provided on the spacer 1. A mounting hole 12 is coaxially provided at the end of the roller 11. The mounting hole 12 is adapted to the shape of the boss, and the connecting boss is plugged into the mounting hole 12. The boss is in the shape of a rotating body, which can be formed by a plane rotating along the axial direction of the roller 11. The end surface area of ​​the boss close to the axis of the roller 11 is less than or equal to the end surface area of ​​the other end, thereby facilitating the disassembly and assembly of the roller 11. Figures 3-5 The boss can be cylindrical, conical, truncated cone, etc.

[0037] Reference Figure 1 、 2 Accommodation spaces 3 for rollers 4 are formed between adjacent spacers 1 and between the rollers 11 within adjacent spacers 1. Rollers 4 are mounted within these spaces. Connecting portions 2 are located at both ends of rollers 4 and limit radial movement of rollers 4. Each roller 4 is in rolling engagement with the four rollers 11 on either side of it. Four lines of contact are formed between the four rollers 11 on either side of a roller 4 and the roller 4, limiting the position of the roller 4.

[0038] It should be noted that the spacers 1 are arranged at both ends of the rollers 4 along the axial direction of the rollers 4 and between adjacent rollers 4 along the radial direction of the rollers 4. The arrangement direction of the multiple spacers 1 is parallel to the arrangement direction of the multiple rollers 4. The arrangement direction of the two rollers 11 on each spacer 1 is perpendicular to the arrangement direction of the spacers 1. The arrangement direction of the multiple rollers 11 on the same side of the arrangement direction of the rollers 4 on the multiple spacers 1 is parallel to the arrangement direction of the multiple rollers 4.

[0039] Further, if Figure 6 As shown, the height a between the two rollers 11 on the same spacer 1 is smaller than the diameter l of the roller 4, and the distance b between the axis of the roller 11 and the axis of the adjacent roller 4 is larger than the radius r of the roller 4, so that the rollers 4 installed in the adjacent accommodating spaces 3 are spaced apart.

[0040] The connecting portion 2 is spaced apart from the end of the roller 4. A bump 21 is provided on the sidewall of the connecting portion 2 facing the end of the roller 4. The bump 21 makes point contact with the end of the roller 4. Preferably, the bump 21 is configured as a spherical bump 21 to reduce the possibility of damage to the end face of the roller 4. The bumps 21 on the connecting portion 2 at both ends of each roller 4 are arranged opposite each other. Furthermore, the connecting portion 2 is provided with a plurality of spherical bumps 21, which are symmetrically arranged on either side of the axis of the corresponding roller 4. In this embodiment, two spherical bumps 21 are provided. The provision of two spherical bumps 21 can, on the one hand, reduce the friction area between the end of the roller 4 and the connecting portion 2, and on the other hand, maintain the stability of the roller 4 within the accommodating space 3, preventing the roller 4 from deflecting.

[0041] The present application sets a roller 11 between adjacent rollers 4 to separate the adjacent rollers 4 to avoid friction between the adjacent rollers 4, and sets four rollers 11 on both sides of the roller 4. The friction form is rolling friction, so the friction force is very small, and the rolling friction can make the movement form of the roller 4 rolling rather than sliding, with small fluctuations and smoother operation. Four-line contact is formed between the four rollers 11 and the roller 4, and the roller 4 has good stability and a high retention rate.

[0042] Furthermore, since the rolling directions of the contact points between the roller 4 and the drum 11 are the same, the lubricating oil on the rolling surface of the roller 4 is avoided from being scraped off, and the lubrication effect of the roller 4 can be kept unchanged.

[0043] Two hemispherical small protrusions are provided between the connecting portion 2 and the end face of the roller 4, which form point contact with the side face of the roller 4, thereby reducing the frictional resistance of the connecting portion 2 to the side face of the roller 4, preventing the roller 4 from tilting during movement, and avoiding the lubricating oil on the side face of the roller 4 from being scraped off by the connecting portion 2, thereby improving the lubrication effect of the roller 4.

[0044] Based on the above-described preferred embodiments of the present invention, and in accordance with the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A roller-to-roller small roller retaining chain, characterized in that: include, A plurality of spacers (1), wherein one spacer (1) is arranged between adjacent rollers (4); A roller (11), the roller (11) being rotatably connected to the spacer (1); A connecting portion (2), wherein the connecting portion (2) is connected between adjacent spacer portions (1); Wherein, two rollers (11) are provided on each spacer (1), and the arrangement direction of the two rollers (11) on the same spacer (1) is perpendicular to the arrangement direction of the spacer (1); one roller (4) and the four rollers (11) on both sides thereof are in rolling cooperation, and the four rollers (11) on both sides of one roller (4) are used to limit the position of the roller (4).

2. The roller-to-roller small roller retaining chain according to claim 1, characterized in that: The arrangement direction of the plurality of spacers (1) is parallel to the arrangement direction of the plurality of rollers (4), and the arrangement direction of the plurality of rollers (11) on the plurality of spacers (1) and located on the same side of the arrangement direction of the rollers (4) is parallel to the arrangement direction of the plurality of rollers (4).

3. The roller-to-roller small roller retaining chain according to claim 1, characterized in that: The height a between the two rollers (11) on the same spacer (1) is smaller than the diameter l of the roller (4).

4. The roller-to-roller small roller retaining chain according to claim 1, characterized in that: The distance b between the axis of the roller (11) and the axis of the adjacent roller (4) is greater than the radius r of the roller (4).

5. The roller-to-roller small roller retaining chain according to claim 1, characterized in that: The spacer (1) is provided with a connecting boss for connecting to the roller (11); the end of the roller (11) is coaxially provided with a mounting hole (12); the connecting boss is plug-fitted into the mounting hole (12); and the end surface area of ​​the boss close to the axis of the roller (11) is less than or equal to the end surface area of ​​the other end.

6. The roller-to-roller small roller retaining chain according to claim 1, characterized in that: The connecting portion (2) and the end portion of the roller (4) are spaced apart.

7. The roller-to-roller small roller retaining chain according to claim 6, characterized in that: A convex block (21) is provided on the side wall of the connecting portion (2) facing the end of the roller (4), and the convex block (21) is in point contact with the end of the roller (4).

8. The roller-to-roller retaining chain according to claim 7, characterized in that: The convex block (21) is configured as a spherical convex block (21).

9. The roller-to-roller small roller retaining chain according to claim 6, characterized in that: The protrusions (21) on the connecting portion (2) at both ends of the roller (4) are arranged opposite to each other.

10. The roller-to-roller retaining chain according to claim 6, characterized in that: A plurality of protrusions (21) are provided on each connecting portion (2), and the protrusions (21) on the connecting portion (2) are symmetrically arranged on both sides of the axis of the roller (4) opposite thereto.

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