CN100425733C - Method for laser laminar smelting and coating manufacture for tyre die - Google Patents

Abstract

The invention provides a tire mold laser layered cladding manufacturing method, which can solve the problems in the prior art, such as waste of materials, complex process, great difficulty, long manufacturing cycle and the like. The technical solution is that the present invention adopts the method of laser layered cladding, that is, the additive method, and makes the tire mold through laser layered cladding. The advantage is that the added material has no redundant part according to the actual thickness of the tire pattern, thus greatly saving metal materials, avoiding unnecessary consumption of high-quality metal materials, reducing costs, and greatly shortening the manufacturing cycle.

Description

Manufacturing method of laser layered cladding for tire mold

technical field

The invention relates to a method for manufacturing tire molds, in particular to a method for manufacturing tire mold patterns with laser technology.

Background technique

At present, the manufacturing methods of tire molds on the market are all manufactured by mechanical processing and EDM. The above-mentioned method is manufactured by adopting a removal method, that is, a subtraction method, to remove redundant metal materials. Because the pattern on the tire—that is, the groove volume only accounts for 10-20% of the entire tire surface volume, that is to say, for the tire mold, 90-80% of the metal will be removed to finally manufacture the tire mold. The disadvantage of this manufacturing method is that the manufacturing cycle is long, high-quality metal materials and energy are wasted, the cost is high, the technology is difficult, and it is almost very difficult to change the pattern after the tire mold is manufactured.

How to solve the above-mentioned deficiencies is the design problem faced by the present invention.

Contents of the invention

The invention provides a tire mold laser layered cladding manufacturing method, which can solve the problems in the prior art, such as waste of materials, complex process, great difficulty, long manufacturing cycle and the like.

In order to achieve the purpose of solving the above-mentioned technical problems, the technical solution of the present invention is a tire mold laser layered cladding manufacturing method, which is characterized in that a laser forming machine is used, and the following steps are carried out:

(1). The laser beam is focused on the inner surface of the tire mold to be processed through the light guide system to form a laser molten pool;

(2). After the laser spot is focused by the light guide system, under the control of the computer, the laser spot scans circularly at the set linear speed, and at the same time the laser spot scans up and down at the set speed to complete the scanning of the inner surface of the tire mold;

(3). During the scanning process, the powder feeding device in the laser forming machine feeds metal powder into the laser molten pool, and the metal powder is melted in the laser molten pool. After the laser spot is scanned, the molten metal solidifies and forms on the inner surface of the tire mold. That is, cladding the previous metal layer;

(4). The tire pattern is layered by the computer and according to the position of the tire pattern, the computer controls the opening and closing of the laser beam to clad a layer of pattern, and then the light guide system moves to the center of the tire mold for the set layer After the distance of the metal thickness, continue to clad the second layer of pattern, and scan the cladding layer by layer until the pattern of the entire thickness is clad.

In the present invention, it also has the following technical features: the diameter of the laser spot after the light guiding system is focused is 0.1-1.5 mm.

In the present invention, it also has the following technical features: the circular scanning speed of the laser spot is 60-100 m/min.

In the present invention, it also has the following technical features: the vertical scanning speed of the laser spot is 0.1-10 m/min.

In the present invention, it also has the following technical features: the thickness of each pattern is 0.05-3.5mm.

In the present invention, it also has the following technical features: the power range of the laser is 5-12kw.

In the present invention, it also has the following technical features: the powder feeding device in the laser forming machine is a coaxial synchronous powder feeding nozzle.

Compared with the prior art, the present invention has the following advantages and positive effects: 1. The present invention adopts the method of laser layered cladding, that is, the additive method. The added material is based on the actual thickness of the tread pattern, and there is no redundant part, thus greatly saving Metal materials are saved, unnecessary consumption of high-quality metal materials is avoided, costs are reduced, and the manufacturing cycle is greatly shortened. 2. When the pattern of the mold needs to be modified, it is only necessary to remove the original pattern by mechanical processing. After the pattern is modified on the computer, a new pattern can be made by laser layered cladding, so that the old mold can be changed to the pattern Become a reality, the old mold can be used, saving money.

Detailed ways

Example

Using a laser forming machine, the laser beam with a power of 5-12kw is focused on the inner surface of the tire mold to be processed through the light guide system to form a laser molten pool; after being focused by the light guide system, the diameter of the laser spot is 0.1-1.5mm. Under computer control, the laser spot scans circularly at a linear speed of 60-100m/min, and at the same time the laser spot scans up and down at a speed of 0.1-10m/min to complete the scanning of the inner surface of the tire mold. During the scanning process, the powder feeding device Feed metal powder into the laser molten pool, and the metal powder is melted in the laser molten pool. After the laser spot is scanned, the molten metal solidifies, and a metal layer is clad on the inner surface of the tire mold; the tire pattern is layered by the computer and according to The position of the tire pattern is controlled by the computer to turn on and off the laser beam, and a layer of pattern can be clad. The thickness of each layer of pattern is 0.05-3.5mm. Then, the light guide system moves to the center of the tire mold by a layer of metal thickness. After the distance, continue to clad the second layer of patterns, scan the cladding layer by layer until the pattern of the entire thickness is clad.

It is best when the laser spot is set to the lower limit. At this time, the laser power should be set to the upper limit, the circular scanning speed is 80-90m/min, and the thickness of each pattern is 0.2-0.5mm.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (2)

1. a method for laser laminar smelting and coating manufacture for tyre die is characterized in that adopting the laser formation machine, is undertaken by following step:

(1). laser beam focuses on the tire-mold internal surface to be processed by light-conducting system, forms laser molten pool;

(2). laser facula after light-conducting system focuses on, under computer control, laser facula is with the linear velocity circular scan of 60～100m/min, laser facula scans up and down with the speed of 0.1～10m/min simultaneously, after the run-down, laser facula moves up and down the distance of 0.1～1.5mm, until the scanning of finishing the tire-mold internal surface;

(3). in scanning process, the powder conveyer in the laser formation machine is sent into metal powder to laser molten pool, and metal powder is melted in the laser molten pool, and after laser facula was scanned, molten metal solidified, and is one metal level in the cladding at the tire-mold internal surface;

(4). by computer with the tyre tread layering and according to the position of tyre tread, Kai Heguan by computer controlled controlling laser beam, cladding goes out one deck decorative pattern, then, after light-conducting system moves the distance of layer of metal thickness to the tire-mold center, continue cladding second layer decorative pattern, successively scan cladding, go out until cladding till the decorative pattern of whole thickness, described every layer of decorative pattern thickness is 0.05～3.5mm, and the power range of described laser is 5～12kw.

2. method according to claim 1 is characterized in that, the powder conveyer in the described laser formation machine is coaxial synchronous powder feeding system mouth.