TWI392596B - Bicycle rim manufacturing method that directly forms patterns on an outer periphery of the bicycle rim - Google Patents

Description

Bicycle wheel manufacturing method capable of forming a pattern or a stamp directly on the surface of the rim

The present invention relates to a method of manufacturing a bicycle rim, and more particularly to a bicycle rim manufacturing method that can form a pattern or a stamp directly on the surface of the rim.

Under the prevalence of environmental awareness and leisure, the bicycles that originally belonged to non-mainstream vehicles have not been the same. Not only must the function be considered sloppy, but even the functional considerations of folding bicycles have come out. Since the design of the shape and function has been saturated, the industry has gradually begun to focus on the design of the light weight and strength. Then began to use aluminum and carbon fiber rims for bicycles. Since the carbon fiber rim is not in the technical field of the present invention, the following is only for the aluminum alloy bicycle rim manufacturing method.

Taking the current process of aluminum alloy rims as an example, it is not only a process of drawing, forming, welding, and surface processing. Generally, the process of aluminum alloy bicycle rims usually ends here. If you want to mark the trademark, specifications or pattern on the rim, then manually attach the sticker (50) one by one, as shown in the sixth figure, or use the screen printing. Wait for it. However, due to the relationship between the adhesives, the sticker is easy to lose its original viscosity due to the sun and rain, and gradually fades out, and may be removed by malicious destruction. It cannot be done once and for all, while the screen printing method can overcome the aforementioned stickers. All kinds of missing, however, different patterns must make different screens, and the bicycle rim is not a complete plane, so the processing is not easy, so the cost is high.

In addition, after the rim manufacturer has drawn the aluminum alloy material, the roller or the rolling method is used to suppress the trademark or pattern on the material. However, these pre-pressed marks or patterns and other marks will be deformed during the process of the round forming, which not only affects the overall aesthetics, but may also cause a lack of identification.

The reason is that the inventor of the present invention is concerned with the shortcomings in the above-mentioned bicycle rim manufacturing process and the disadvantages of high price. In the spirit of perseverance and the purpose of excellence, the present inventors actively and continuously research and improve, and constantly strive and experiment, and finally develop The present invention has been devised.

SUMMARY OF THE INVENTION A primary object of the present invention is to solve the above problems and to provide a method of manufacturing a bicycle rim that can form a pattern or a stamp directly on the surface of the rim.

In order to achieve the above object, the present invention sequentially scrapes the following steps: extrusion drawing: extruding an alloy material to be made into a bicycle rim into a hollow strip having a U-shaped cross section; Molding: the long strip structure is made into a C-shaped structure by a rounding machine and cut; the joint: the C-shaped structure is joined into a complete rim; the hole is formed: a series of equidistant radial directions are formed on the rim For the piercing of the spokes and the nozzle hole for the wind nozzle; the side of the car: the two outer walls of the outer ring of the rim are processed into a flat bicycle wheel end face; the attached film: the rim is not The part to be processed is attached with a protective film; the bead is processed: the rim of the attached protective film is placed in the bead blasting machine for beading processing; and the protective film is removed: the rim of the beading processing is completed Remove and remove the protective film from the bead blasting machine. At this time, the part attached to the protective film is not subjected to the beading, so as to maintain its original smooth surface, and the part hit by the bead has a matte effect. The pattern of the pattern or the stamp is formed on the rim by contrast between the glossy surface and the matte surface.

The above and other objects and advantages of the present invention will be readily understood from

Of course, the present invention may be different in some of the components, or the arrangement of the components, but the selected embodiments are described in detail in the present specification, and the manufacturing process thereof is shown in the drawings.

The present invention relates to a bicycle wheel manufacturing method capable of forming a pattern or a stamp directly on the surface of a rim. Referring to the first and second figures, the present invention sequentially includes the following steps: extrusion and drawing Molding: the alloy material to be made into a bicycle rim is extruded and drawn into a hollow strip structure having a U-shaped cross section, and the strip-shaped structure is divided into a fixed spoke fixing portion according to its function (11) And a tire mounting portion (12) disposed at the open end, and a reinforcing rib (13) is disposed between the spoke fixing portion (11) and the tire mounting portion (12).

Reel forming: The long strip-like structure is wound into a C-shaped structure by a reeling machine with the spoke fixing portion (11) as an inner ring, and is cut.

Bonding: Joining the aforementioned C-shaped structure into a complete annular structure. The process can be used to combine the two ends of the C-shaped structure with the plug on the latching machine; the two ends of the C-shaped structure can also be connected by welding, argon welding, etc., as shown in the third figure.

Hole making: A series of equidistant radial holes for piercing the spokes and a nozzle hole for the tuyeres are formed on the ring structure by means of a punching machine or a drilling machine.

Car side: The two outer walls of the tire mounting part (12) are machined into a flat brake end face by grinding or turning.

Attaching the protective film: attach the protective film to the part of the spoke fixing part (11) that is not to be processed.

Bead-cutting processing: The wheel with the protective film is placed in the beading machine for beading processing.

Remove the protective film: Remove the rim of the finished beading process from the bead blasting machine and tear off the protective film. In this way, the portion of the spoke fixing portion (11) attached to the protective film is not subjected to the beading, so as to maintain the original smooth surface, and the portion hit by the bead has a matte effect, by the smooth surface and the matte surface. A pattern or a pattern such as a stamp is formed on the spoke fixing portion (11) in contrast to the effect.

In the process of attaching the protective film, if a hollow pattern, pattern or character is formed on the protective film, various patterns, patterns or characters of the matte surface are formed on the spoke fixing portion (11); The pattern, pattern or text is glossy, as shown in the fifth picture.

Through the foregoing process, various patterns can be formed on the rim of the bicycle according to the needs of the manufacturer or the consumer, and the pattern is not easily broken, and the lack of the sticker of the conventional rim sticker can be improved. Moreover, since the bead blasting machine can process many rims at the same time, the manufacturing cost of the bicycle rim can be reduced at a reduced price.

In addition, after the bicycle rim is treated by bead blasting, the compression of the surface layer can be increased, the fatigue life of the surface layer is prolonged and the damage mechanism of stress corrosion is reduced, and the beading process can remove the burrs generated in other processes, which can be described as a few Got it.

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

From the above detailed description, those skilled in the art can understand that the present invention can achieve the foregoing objects, and no similar publications are found in similar processes or products, which have been in compliance with the provisions of the Patent Law, and have been patented according to law. Application.

11. . . Spoke fixing

12. . . Tire mounting

13. . . Reinforcing rib

50. . . Sticker

The first figure is a flow chart of the present invention.

The second figure is a partial perspective view of the extruded semi-finished product of the present invention.

The third figure is a partial perspective view of the semi-finished product of the rim of the present invention.

The fourth figure is a partial perspective view of the finished rim of the present invention.

The fifth drawing is a partial perspective view of another embodiment of the present invention.

The sixth figure is a partial perspective view of a conventional bicycle rim.

Claims (7)

A bicycle rim manufacturing method comprises the following processes in sequence: extrusion drawing: extruding an alloy material to be made into a bicycle rim into a hollow strip structure having a U-shaped cross section; Molding: the long strip structure is made into a C-shaped structure by a rounding machine and cut; the joint: the C-shaped structure is joined into a complete rim; the hole is formed: a series of equidistant radial directions are formed on the rim a perforation for the spokes and a tuyer hole for the tuyère; the side of the car: a two-outer wall of the outer ring of the rim is processed into a flat bicycle rim brake end face; characterized in that the present invention is further sequential The following process includes forming a pattern or a stamp directly on the surface of the rim: attaching the protective film: attaching the protective film to the portion of the rim that is not intended to be processed; beading processing: placing the rim attached with the protective film The beading machine performs the beading processing operation; and the tearing off the protective film: the rim of the finished beading process is taken out from the bead blasting machine and then the protective film is removed, and at this time, the part of the attached protective film is not subjected to the beading , the solid retains its original smooth surface, while the part hit by the bead produces a matte finish By patterning the surface or the matte surface, a pattern or a stamp is formed on the rim; wherein the bicycle rim can increase the compressive stress of the surface layer after the beading process, thereby prolonging the fatigue life of the surface layer and reducing stress corrosion. The destruction mechanism, and the beading process can remove the burrs generated in other processes, so that the bicycle rim has both strength and high recognition. The rim manufacturing method according to the first aspect of the invention, wherein the pattern or the stamp formed on the rim exhibits a smooth surface effect. The rim manufacturing method according to the first aspect of the invention, wherein the pattern or the pattern formed on the rim exhibits a matte effect. The method for manufacturing a rim according to claim 1, wherein the elongated structure is divided into a fixed spoke fixing portion and a device according to its function. A reinforcing rib is disposed between the spoke fixing portion and the tire mounting portion at the tire mounting portion at the open end. The rim manufacturing method according to the fourth aspect of the invention, wherein the pattern or the pattern is formed on the spoke fixing portion. The rim manufacturing method according to claim 5, wherein the pattern or the pattern formed on the spoke fixing portion exhibits a smooth surface effect. The rim manufacturing method according to claim 5, wherein the pattern or the stamp formed on the spoke fixing portion exhibits a matte effect.