CN114783321B

CN114783321B - Reflective marking ball

Info

Publication number: CN114783321B
Application number: CN202210188550.5A
Authority: CN
Inventors: 薛富云; 蔡桂林; 关沛峰
Original assignee: Guangzhou Aimuyi Technology Co ltd
Current assignee: Guangzhou Aimuyi Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2023-05-09
Anticipated expiration: 2042-02-28
Also published as: CN116665558A; CN114783321A

Abstract

The invention discloses a reflective marker ball, which belongs to the technical field of reflective markers and is used for being assembled with a buckle column, wherein the reflective marker ball comprises a spherical carrier and a hot-melt reflective film layer which is coated on the spherical carrier in a spherical shape; the spherical carrier comprises a first hemisphere and a second hemisphere which are mutually butted, the first hemisphere is provided with a plug-in column which extends out of the plane end of the first hemisphere along the axial direction, the plug-in column is arranged in a hollow way, and the inner wall of the plug-in column is convexly provided with a buckling protrusion which is matched and buckled with the buckling column; the second hemisphere is provided with an insertion hole which is penetrated along the axial direction and can be used for the insertion and fixation of the insertion column in a matching way. The reflective marking ball has good roundness, tight adhesion and no gap, is convenient to mount and dismount, and has good identification precision of detection equipment during use.

Description

Reflective marking ball

Technical Field

The invention belongs to the technical field of reflective marks, and particularly relates to a reflective marking ball.

Background

The marking sphere determines the three-dimensional coordinates of the marking sphere by returning light to the light source location in the original path for capture by the detection device. The existing reflective marking ball sequentially comprises a plastic carrier and a reflective ball cover arranged outside the plastic carrier from inside to outside, wherein the reflective ball cover is composed of more than two split bodies, each split body comprises a PVC film and a reflective film, and the reflective film is covered on the PVC film. The prior marking ball has the following problems:

1. in the process of forming the reflective spherical cover, even stretching of the PVC film and the reflective film cannot be completely guaranteed, and the roundness of the marking ball can be influenced.

2. The PVC film has poor thermal stability and can be decomposed at a higher temperature; the PVC film has lower strength and is easy to deform, so that the roundness of the internal plastic carrier is required to be higher, and if the roundness of the carrier is poorer, the roundness of the marking ball after the marking ball is completely adhered to the spherical cover can be directly influenced.

3. The structure is complex, because it is equivalent to need cover two-layer material on carrier plastics pellet, is PVC membrane, reflective membrane from inside to outside in proper order, and the preparation is loaded down with trivial details, and the error can be enlarged to the structure of multilayer, leads to there being great gap between reflective membrane and the spheroid.

4. The marking ball is fixed for the screw thread in the mounting means when using, and the installation is torn down more troublesome, and whether it is in place to judge more difficult, if install not in place, then can influence check out test set's recognition accuracy.

Disclosure of Invention

The invention provides a reflective marking ball, which aims to solve the problems that the roundness of the marking ball is difficult to ensure, gaps exist between a reflective film and a ball body, the installation and the disassembly are troublesome during use, and the identification accuracy is affected in the prior art.

The invention adopts the following technical scheme:

the reflective marking ball is used for being assembled with the buckle column and comprises a spherical carrier and a hot-melt reflective film layer which is coated on the spherical carrier in a spherical shape; the spherical carrier comprises a first hemisphere and a second hemisphere which are mutually butted, the first hemisphere is provided with a plug-in column which extends out of the plane end of the first hemisphere along the axial direction, the plug-in column is arranged in a hollow way, and the inner wall of the plug-in column is convexly provided with a buckling protrusion which is matched and buckled with the buckling column; the second hemisphere is provided with an insertion hole which is penetrated along the axial direction and can be used for the insertion and fixation of the insertion column in a matching way.

In some embodiments, the plug post is a close fit with the receptacle.

In some embodiments, the plug post is adhesively secured after insertion into the receptacle.

In some embodiments, the plugging column is concavely provided with a circle of glue storage groove.

In some embodiments, the button is disposed circumferentially around the inner wall.

In some embodiments, the height of the button protrusion above the inner wall is 0.2mm to 0.3mm.

In some embodiments, the buckling convex surface comprises a guide inclined surface, an inner peripheral surface and a limiting surface which are sequentially arranged from the outside of the port to the inside of the port of the plug-in column; the guide inclined surface is in a truncated cone shape, and the inner diameter of the guide inclined surface is gradually reduced from the outer side of the port of the plug-in column to the inner side of the port of the plug-in column; the limiting surface is in a truncated cone shape, and the inner diameter of the limiting surface is gradually increased from the outside of the port of the plug-in column to the inside of the port; the inner peripheral surface connects the inner end of the guide inclined surface with the outer end of the limit surface.

In some embodiments, the plug post has a length less than or equal to the length of the receptacle.

In some embodiments, the receptacle is provided with a chamfer at the planar end of the second hemisphere.

In some embodiments, the hot melt retroreflective sheeting comprises a first retroreflective sheeting coated outside the sphere of the first hemisphere and a second retroreflective sheeting coated outside the sphere of the second hemisphere.

Compared with the prior art, the invention has the beneficial effects that:

1. in the reflective marking ball, the spherical carrier is assembled together by the first hemisphere and the second hemisphere through the plug-in column and the plug hole, so that dislocation during combination of the two hemispheres is greatly avoided, the spherical carrier has good roundness, and the roundness of the final marking ball is ensured to be good;

2. the hot-melt reflective film layer is adopted as the reflective layer to replace a PVC film and a reflective film in the prior art, the PVC film and the reflective film are not easy to decompose when heated, the strength is good, the good ductility of the hot-melt reflective film layer after heating is utilized, the hot-melt adhesive film on the back of the hot-melt reflective film layer is melted into a semi-fluid state and is rich in viscosity when heated, and the hot-melt reflective film layer is firmly attached to the surface of a smooth spherical carrier in a hot-pressing mode, so that the spherical carrier is completely wrapped and covered by the hot-melt reflective film, and the roundness of a reflective marking ball is not influenced;

3. the hot-melt reflective film layer is integrated, and can be tightly bonded after being bonded on the spherical carrier by hot pressing, so that gaps can not occur;

4. the convex buckle is arranged in the plug-in column of the reflective marker ball, the convex buckle can be buckled and fixed with the buckle column in a matched manner, the buckle connection mode is more convenient to install and disassemble compared with the threaded connection mode in the prior art, and obvious hand feeling changes exist after the reflective marker ball is installed in place in the buckle connection mode, so that installation personnel are reminded of installing in place, and the identification precision of detection equipment is ensured.

Drawings

The technology of the present invention will be described in further detail below with reference to the attached drawings and detailed description:

FIG. 1 is a schematic illustration of the assembly process of the present retroreflective marker-spheres;

FIG. 2 is a schematic diagram of the structure of the spherical carrier after being split;

FIG. 3 is a schematic view of the structure of the assembled spherical carrier;

FIG. 4 is a schematic view of the structure of the first hemisphere;

FIG. 5 is a cross-sectional view of the first hemisphere;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is a schematic view of the structure of the second hemisphere;

FIG. 8 is a cross-sectional view of a second hemisphere;

fig. 9 is a cross-sectional view of the spherical carrier after assembly.

Reference numerals:

1-a spherical carrier; 11-a first hemisphere; 111-plug-in columns; 112-buckling convex; 1121—a guide ramp; 1122-an inner peripheral surface; 1123-a limiting surface; 113-a glue storage groove; 12-a second hemisphere; 121-a jack; 122-chamfering;

2-a hot melt retroreflective film layer; 21-a first retroreflective semi-film; 22-second retroreflective semi-film.

Detailed Description

The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The same reference numbers will be used throughout the drawings to refer to the same or like parts.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present invention are merely with respect to the mutual positional relationship of the constituent elements of the present invention in the drawings.

Referring to fig. 1 to 9, a reflective marker ball is used for being assembled with a buckle post, the buckle post is fixed on a target object during installation, and the reflective marker ball is installed and fixed on the buckle post.

Referring to fig. 1, the reflective marker sphere comprises a spherical carrier 1 and a hot-melt reflective film layer 2 which is spherically coated on the spherical carrier 1.

With reference to fig. 2 and 3, the spherical carrier 1 includes a first hemisphere 11 and a second hemisphere 12 that are butted with each other, and form a sphere after being butted with each other, and it can be understood that when being butted, the plane ends of the two hemispheres are tightly attached to each other, and can form a sphere. Referring to fig. 4 and 5, the first hemisphere 11 is provided with a plug-in post 111 extending from its plane end along the axial direction, the plug-in post 111 is hollow and the inner wall is provided with a buckling protrusion 112 which is matched and buckled with the buckling post; referring to fig. 7 to 9, the second hemisphere 12 is provided with an insertion hole 121 penetrating in the axial direction for the insertion and fixing of the insertion post 111. When the first hemisphere 11 and the second hemisphere 12 are assembled in a butt joint mode, the plug-in column 111 is inserted into the jack 121, the plane ends of the two hemispheres are tightly attached, and the matching of the plug-in column 111 and the jack 121 plays a role in shaft hole matching and positioning, so that errors of the two hemispheres are avoided, and good roundness of the spherical carrier 1 is ensured.

And the hot-melt reflective film layer 2 is coated on the outer surface of the spherical carrier 1 in a hot-pressing mode to form a complete reflective marking sphere. When in use, the buckling convex 112 in the hollow plug-in column 111 is matched and buckled with the buckling column, and the hot-melt reflective film layer 2 can be understood to not cover the outer ends of the plug-in column 111 and the plug hole 121. The fastening post is cylindrical and is provided with a circle of fastening grooves which can be embedded by the fastening protrusions 112, so that fastening and fixing of the fastening post and the fastening protrusion are realized. Wherein the first hemisphere 11 and the second hemisphere 12 are both plastic hemispheres.

It can be understood that the hot-melt reflective film layer 2 is not easy to decompose when being heated, has better strength, utilizes the good ductility of the hot-melt reflective film layer after being heated, and the hot-melt adhesive film on the back surface of the hot-melt reflective film layer can be melted into a semi-fluid state and is rich in viscosity, and the hot-melt reflective film layer is firmly attached to the surface of the smooth spherical carrier 1 in a hot-pressing mode, so that the spherical carrier 1 is completely wrapped and covered by the hot-melt reflective film, and the roundness of the reflective marking ball cannot be affected.

In one embodiment, the heat-fusible reflective film layer 2 includes a first reflective half film 21 coated outside the spherical surface of the first hemisphere 11 and a second reflective half film 22 coated outside the spherical surface of the second hemisphere 12, that is, each hemisphere is coated with a hemispherical reflective film layer, and these reflective film layers belong to the heat-fusible reflective film layers. During manufacturing, two hot-melt reflective film layers are firstly fixed on the spherical surfaces of the first hemisphere 11 and the second hemisphere 12 in a hot-pressing mode to form a first reflective semi-film 21 and a second reflective semi-film 22 respectively, and then the two hemispheres are fixed in an inserting mode through the inserting posts 111 and the inserting holes 121, so that a complete reflective marking ball is formed, and then the complete reflective marking ball is installed on the clamping posts.

Preferably, referring to fig. 2 and 9, the plug-in post 111 is tightly fitted with the insertion hole 121, so as to avoid the radial offset of the plug-in post and the insertion hole during the insertion, ensure the plug-in post and the insertion hole to be coaxial, and further avoid the dislocation of the two hemispheres. In one embodiment, the first hemisphere 11 has a diameter of 11.5mm and the socket post 111 has an outer diameter of

To ensure the working strength, a wall thickness of 1mm is required, so that the inner diameter of the plug-in column 111 is +.>

Correspondingly, the diameter of the second hemisphere 12 is 11.5mm, the diameter of the middle circular hole is +.>

To ensure the precision of its cooperation with the first hemisphere 11, the machining precision tolerance is a negative tolerance. />

Preferably, the plugging post 111 is inserted into the insertion hole 121 and then fixed by gluing, and the first hemisphere 11 and the second hemisphere 12 are further fixed by gluing, so as to improve the firmness of the two assembled components. More preferably, referring to fig. 2 and 4, the plugging post 111 is concavely provided with a circle of glue storage groove 113, and the glue storage groove 113 is used for applying glue when matching with two hemispheres, so as to avoid the glue overflowing to the surface of the spherical carrier 1. In one embodiment, the cross section of the glue reservoir 113 is circular arc-shaped with a radius of 0.5mm.

Referring to fig. 5, the fastening protrusion 112 is disposed on the inner wall around a circle, so that the fastening protrusion is not required to be adjusted in direction during assembling with the fastening post, and the fastening protrusion is fastened and fixed by inserting the fastening protrusion therebetween, so that the installation is more convenient.

With reference to fig. 6, the height of the protrusion 112 protruding from the inner wall is 0.2mm-0.3mm, and in this size range, the locking is stable and the locking is not too tight. In one embodiment, the height of the protrusion 112 protruding from the inner wall is 0.25mm.

Specifically, referring to fig. 6, the locking protrusion 112 includes a guiding inclined surface 1121, an inner circumferential surface 1122, and a limiting surface 1123, which are sequentially disposed from the outside of the port to the inside of the port of the plugging column 111; the guide inclined plane 1121 is in a shape of a truncated cone, and the inner diameter of the guide inclined plane is gradually reduced from the outside of the port of the plug-in column 111 to the inside of the port; the limiting surface 1123 is in a shape of a truncated cone, and the inner diameter of the limiting surface gradually increases from the outside of the port of the plug-in column 111 to the inside of the port; the inner circumferential surface 1122 connects the inner end of the guide slope 1121 and the outer end of the stopper surface 1123. When the buckle column is matched and inserted, the buckle column is inserted into and passes through the buckling protrusion 112 in the setting direction of the guide inclined plane 1121, when the clamping groove on the buckle column reaches the buckling protrusion 112, the buckling protrusion 112 is embedded into the clamping groove, and at the moment, the limiting surface 1123 can be matched with the clamping groove to prevent the buckle column from being pulled out outwards. In addition, the position of the guiding inclined plane 1121 may be used as a positioning dimension in production, when the distance between the outer end of the positioning inclined plane of each first hemisphere 11 and the plane end of the first hemisphere 11 is equal, it means that the sphere center of each reflective marker sphere is on one plane after assembling with the buckle post, so as to ensure the assembling precision after assembling, because the detecting device establishes a three-dimensional coordinate system through the sphere center of the reflective marker sphere, it is required to ensure that the sphere centers of all reflective marker spheres are on the same plane after assembling. In one embodiment, wherein the distance between the outer end of the guiding bevel 1121 and the planar end of the first hemisphere 11 is

In one embodiment, referring to fig. 9, the plug post 111 has a length less than or equal to the length of the receptacle 121. In one embodiment, the length of the receptacle is 4.96mm and the length of the peg 111 is 4.3mm.

In one embodiment, referring to fig. 2 and 8, the insertion hole 121 is provided with a chamfer 122 at the planar end of the second hemisphere 12 to facilitate insertion of the plug post 111 into the insertion hole 121.

The reflective marking ball of the present invention is described in detail in the prior art, and is not described in detail herein.

The present invention is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present invention are within the scope of the technical proposal of the present invention.

Claims

1. The reflective marking ball is used for being assembled with the buckle column and is characterized by comprising a spherical carrier and a hot-melt reflective film layer which is coated on the spherical carrier in a spherical shape; the spherical carrier comprises a first hemisphere and a second hemisphere which are mutually butted, the first hemisphere is provided with a plug-in column which extends out of the plane end of the first hemisphere along the axial direction, the plug-in column is arranged in a hollow way, and the inner wall of the plug-in column is convexly provided with a buckling protrusion which is matched and buckled with the buckling column; the second hemisphere is provided with an insertion hole which is penetrated along the axial direction and can be used for the insertion and fixation of the insertion column in a matching way;

the first hemisphere and the second hemisphere are plastic hemispheres;

the plug-in column is tightly matched with the jack; a circle of glue storage groove is concavely formed in the plug-in column, and the section of the glue storage groove is arc-shaped;

the buckling bulge comprises a guide inclined plane, an inner peripheral surface and a limiting surface which are sequentially arranged from the outside of the port of the plug-in column to the inside of the port; the guide inclined surface is in a truncated cone shape, and the inner diameter of the guide inclined surface is gradually reduced from the outer side of the port of the plug-in column to the inner side of the port of the plug-in column; the limiting surface is in a truncated cone shape, and the inner diameter of the limiting surface is gradually increased from the outside of the port of the plug-in column to the inside of the port; the inner peripheral surface connects the inner end of the guide inclined surface with the outer end of the limit surface; the height of the buckling convex protruding the inner wall is 0.2mm-0.3mm;

the hot-melt reflective film layer comprises a first reflective semi-film coated outside the spherical surface of the first hemisphere and a second reflective semi-film coated outside the spherical surface of the second hemisphere.

2. The retroreflective marker sphere of claim 1 wherein the plug post is adhesively secured after insertion into the receptacle.

3. The retroreflective marker-sphere defined in claim 1 wherein said stud is disposed circumferentially around said inner wall.

4. The retroreflective marker sphere of claim 1 wherein the plug post has a length less than or equal to the length of the receptacle.

5. The retroreflective marker sphere of claim 1 wherein the receptacle is provided with a chamfer at the planar end of the second hemisphere.