阅读说明：本技术 一种微孔喷嘴加工模具及方法 (micropore nozzle machining mold and method ) 是由 王兆雄 赵玉梅 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种微孔喷嘴加工模具,包括下模、可相对下模升降的上模及可相对下模升降的模腔,模腔位于上模和下模之间,上模的下端安装有针模,针模的底部呈倒圆锥状,针模的锥角处设有针具,模腔在正对针模的位置处设有坯料通孔,下模、坯料通孔和针模之间可形成坯料成型腔,坯料成型腔内可放置粉料。一种微孔喷嘴加工方法,采用上述微孔喷嘴加工模具,在坯料成型腔成型出具有一定锥度角的微孔喷嘴坯料半成品,微孔喷嘴坯料半成品经烧结,然后再磨削、抛光得到微孔喷嘴产品,这种处理方式不需要大型模具进行加工成型,不仅降低了生产成本,而且提高了生产效率,便于批量化生产。(the invention discloses a micropore nozzle processing die, which comprises a lower die, an upper die capable of lifting relative to the lower die and a die cavity capable of lifting relative to the lower die, wherein the die cavity is positioned between the upper die and the lower die, a needle die is arranged at the lower end of the upper die, the bottom of the needle die is in an inverted cone shape, a needle die is arranged at the cone angle of the needle die, a blank through hole is arranged at the position of the die cavity, which is opposite to the needle die, a blank forming cavity can be formed among the lower die, the blank through hole and the needle die, and powder can be placed in. A micropore nozzle processing method adopts the micropore nozzle processing mould, a micropore nozzle blank semi-finished product with a certain taper angle is formed in a blank forming cavity, the micropore nozzle blank semi-finished product is sintered, and then is ground and polished to obtain a micropore nozzle product.)

1. The utility model provides a micropore nozzle mold processing which characterized in that: the needle forming die comprises a lower die, an upper die capable of lifting relative to the lower die and a die cavity capable of lifting relative to the lower die, wherein the die cavity is positioned between the upper die and the lower die, the lower end of the upper die is provided with a needle die, the bottom of the needle die is in an inverted conical shape, a needle tool is arranged at the taper angle of the needle die, a blank through hole is formed in the die cavity at the position right opposite to the needle die, a blank forming cavity can be formed among the lower die, the blank through hole and the needle die, and powder can be placed in the blank forming cavity.

2. the micro-orifice nozzle machining die of claim 1, wherein: an avoiding groove is formed in the upper surface of the lower die and is located right below the needle tool.

3. The micro-orifice nozzle machining die of claim 1, wherein: the cope and the cavity may be remote from or close to each other.

4. The micro-orifice nozzle machining die of claim 1, wherein: the taper angle of the bottom of the needle die is larger than 80 degrees.

5. a micropore nozzle processing method is characterized in that: the method of using a micro-orifice nozzle machining die as claimed in any one of claims 2 or 3 or 4, comprising the steps of:

Step one, inserting the lower die into the lower part of the blank through hole, and forming a feeding groove between the top surface of the lower die and the blank through hole;

step two, adding powder into the feeding groove in the step one, moving the upper die downwards to enable the needle die to be inserted into the upper part of the blank through hole and tightly press the powder in the feeding groove, and forming a blank forming cavity among the lower die, the blank through hole and the needle die;

step three, keeping the pressure of the needle die at 80-150 MPa for not less than 5 minutes to obtain a semi-finished product of the microporous nozzle blank;

Fourthly, moving the die cavity downwards until the upper surface of the die cavity is flush with the upper surface of the semi-finished product of the microporous nozzle blank;

Moving the upper die upwards to the needle die to separate from the semi-finished product of the micropore nozzle blank;

moving the die cavity up or down to the die cavity to separate from the semi-finished product of the microporous nozzle blank, and sintering and molding the semi-finished product of the microporous nozzle blank;

and step seven, obtaining the microporous nozzle blank.

6. The method of claim 5, wherein the method further comprises: the method also comprises the following steps between the sixth step and the seventh step: and grinding and polishing the semi-finished product of the microporous nozzle blank.

7. The method of claim 5, wherein the method further comprises: in the third step, the aperture of the micropore of the semi-finished product of the micropore nozzle blank is at least 0.05 mm.

8. the method of claim 5, wherein the method further comprises: the powder is hard alloy powder.

Technical Field

the invention relates to the technical field of nozzle processing, in particular to a micropore nozzle processing mold and a micropore nozzle processing method.

background

the nozzle, also called spray head and nozzle, is a key part in many kinds of equipment for spraying, atomizing, oil-spraying, sand-blasting and spray-coating.

Laser soldering equipment and dispensing packaging equipment are increasingly widely applied to the industries of electronic circuits and optical/electronic devices, and one of core components of the laser soldering equipment and the electronic dispensing packaging equipment is a hard alloy solder ball soldering nozzle and a dispensing nozzle. The nozzle material has high hardness, precise structure size, high processing and manufacturing difficulty and high technical content, and particularly has the advantages of micro-pore processing, small pore diameter and high requirements on smoothness and concentricity of the nozzle.

The current common processing methods of the nozzle micro-channel include electric spark processing, laser beam processing, mechanical micro-perforation, solution etching, LIGA technology, ultrasonic processing and the like. Although each of these techniques has advantages in processing and manufacturing, there are problems of high equipment requirements, high processing costs, low production efficiency, and poor consistency. When a micropore nozzle with a certain taper angle needs to be produced, a common method is to process the micropore nozzle by using a mould or equipment and then carry out taper angle treatment on the micropore nozzle, and the mode of processing the micropore nozzle by two main processes greatly influences the production efficiency of products and has certain influence on the quality of the nozzle.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, and provides a micropore nozzle processing mold and a micropore nozzle processing method, which are simple to operate and can directly process and form a nozzle with a large inlet and outlet taper angle and a tiny pore diameter.

The technical scheme adopted by the invention for solving the technical problems is as follows:

A method for processing a micropore nozzle comprises a lower die, an upper die capable of lifting relative to the lower die and a die cavity capable of lifting relative to the lower die, wherein the die cavity is positioned between the upper die and the lower die, a needle die is arranged at the lower end of the upper die, the bottom of the needle die is in an inverted cone shape, a needle die is arranged at the cone angle position of the needle die, a blank through hole is formed in the die cavity at the position right opposite to the needle die, a blank forming cavity can be formed among the lower die, the blank through hole and the needle die, and powder can be placed in.

As the improvement of the technical scheme, the upper surface of the lower die is provided with an avoiding groove which is positioned under the needle tool.

as an improvement of the above technical solution, the upper die and the die cavity can be far away from or close to each other.

as an improvement of the technical scheme, the taper angle of the bottom of the needle die is larger than 80 degrees.

A micropore nozzle processing method adopts the micropore nozzle processing mould, and comprises the following steps:

step one, inserting a lower die into the lower part of a blank through hole, and forming a feeding groove between the top surface of the lower die and the blank through hole;

step two, adding the powder into the feeding groove in the step one, moving the upper die downwards to enable the needle die to be inserted into the upper part of the blank through hole and tightly press the powder in the feeding groove, and forming a blank forming cavity among the lower die, the blank through hole and the needle die;

Step three, keeping the pressure of the needle die at 80-150 MPa for not less than 5 minutes to obtain a semi-finished product of the microporous nozzle blank;

Fourthly, moving the die cavity downwards until the upper surface of the die cavity is flush with the upper surface of the semi-finished product of the microporous nozzle blank;

moving the upper die upwards to the needle die to separate from the semi-finished product of the micropore nozzle blank;

moving the die cavity up or down to the die cavity to separate from the semi-finished product of the microporous nozzle blank, and sintering and molding the semi-finished product of the microporous nozzle blank;

And step seven, obtaining the microporous nozzle blank.

As an improvement of the technical scheme, the method further comprises the following steps between the sixth step and the seventh step: and grinding and polishing the semi-finished product of the microporous nozzle blank.

As an improvement of the technical proposal, in the third step, the aperture of the micropore of the semi-finished product of the micropore nozzle blank is at least 0.05 mm.

As an improvement of the technical scheme, the powder is hard alloy powder.

the invention has the beneficial effects that:

the invention provides a micropore nozzle processing die, wherein a needle die adopts an inverted cone structure, a needle tool is arranged on the needle die, the needle die drives the needle tool to be pressed down to a blank through hole of a lower die and form a blank forming cavity with the lower die, and the needle die is utilized to press powder in the blank forming cavity to directly form a nozzle blank with a certain taper angle and micropores. By adopting the micropore nozzle processing method of the micropore nozzle processing die, a micropore nozzle blank semi-finished product with a certain taper angle is formed in the blank forming cavity, and the micropore nozzle blank semi-finished product is sintered, then ground and polished to obtain a micropore nozzle product.

Drawings

the invention is further described with reference to the following detailed description of embodiments and drawings, in which:

FIG. 1 is a schematic structural diagram of a micro-orifice nozzle processing mold according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the lower die of FIG. 1;

Fig. 3 is a schematic diagram of a micro-perforated nozzle blank in an embodiment of the invention.

Detailed Description

reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.

in the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.