CN113769979A - Nozzle for dispensing and manufacturing method thereof - Google Patents
Nozzle for dispensing and manufacturing method thereof Download PDFInfo
- Publication number
- CN113769979A CN113769979A CN202111086089.4A CN202111086089A CN113769979A CN 113769979 A CN113769979 A CN 113769979A CN 202111086089 A CN202111086089 A CN 202111086089A CN 113769979 A CN113769979 A CN 113769979A
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- China
- Prior art keywords
- nozzle
- hole
- dispensing
- manufacturing
- dispensing nozzle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention provides a nozzle for dispensing, which comprises a nozzle seat body and a cylindrical nozzle body made of polycrystalline diamond, wherein a placing hole for placing the nozzle body is formed in the nozzle seat body, a conical hole matched with the top end part of an external firing pin is formed in the nozzle body, an inner through hole is formed in the bottom of the conical hole, and an outer through hole communicated with the inner through hole is formed in the nozzle seat body. Compared with the prior art, the nozzle for dispensing provided by the invention has the advantages that the nozzle body made of polycrystalline diamond is arranged in the nozzle seat body, the chemical reaction with workpiece materials is directly difficult to occur, the cobalt loss problem is avoided, the downtime and the machine adjusting time caused by frequent replacement of parts can be effectively reduced, and the stability of the processing quality is ensured.
Description
Technical Field
The invention relates to the field of dispensing, in particular to a nozzle for dispensing and a manufacturing method thereof.
Background
The dispensing machine can meet the production requirement only by being supported by precise dispensing accessories, wherein the most central accessories are dispensing valves, and the most central accessories in the dispensing valves are firing pins and dispensing nozzles. The glue dispensing operation is to control the striker and the glue dispensing nozzle to open and close at high frequency through the electromagnetic valve so as to realize the passing and closing of glue. Therefore, the life of the striker and the dispensing nozzle is critical.
The existing dispensing nozzle can be made of high-hardness and high-wear-resistance materials such as stainless steel and tungsten steel. The common alloy steel has low hardness of HRC 60-65, poor wear resistance and high hardness of tungsten steel more than HRC80, so that the dispensing nozzle is made of tungsten steel. However, the tungsten steel contains cobalt, such as the commonly used tungsten steel brand of japanese sumitomo AF1, the cobalt content is 12%, and during the dispensing process, part of the chemical components in the glue solution cause cobalt loss in the tungsten steel. Cobalt acts as a binder in tungsten steel, WC (tungsten carbide) is a very hard, very wear-resistant and refractory substance, and the melting point of the WC can reach 2870 +/-50 ℃; the melting point of cobalt is about 1430 ℃; when the temperature of the hard alloy blank is increased to about 1430 ℃ in the sintering process, the cobalt reaches the melting point and is in a molten state, and the cobalt permeates into gaps of WC (tungsten carbide) to tightly combine the WC and the Co, and when the temperature is cooled, the hard alloy is formed; therefore, the hard alloy really plays a role in resisting wear and pressure and is WC, and the cobalt plays a role in bonding; when cobalt loss occurs on the surface of the tungsten steel, the elasticity and the toughness are lost, so that the tungsten steel is embrittled and failed quickly. Therefore, in the repeated impact dispensing process of the existing dispensing nozzle made of tungsten steel, the dispensing nozzle can be quickly catalyzed and loses efficacy, the service life is short, and parts need to be frequently replaced.
Disclosure of Invention
Aiming at the problems, the invention provides a nozzle for dispensing, which is characterized in that a nozzle body made of polycrystalline diamond is arranged in a nozzle seat body, is directly difficult to generate chemical reaction with a workpiece material, cannot generate the problem of cobalt loss, can effectively reduce the downtime and machine adjustment time caused by frequent replacement of parts, and ensures the stability of the processing quality.
The technical scheme adopted by the invention is as follows:
the utility model provides a nozzle for point is glued, includes the nozzle pedestal and adopts the cylindrical nozzle body that polycrystalline diamond made, is equipped with the hole of laying that is used for laying the nozzle body in the nozzle pedestal, and this internal formation of nozzle is used for with outside firing pin top portion complex bell mouth, and the bottom of bell mouth is equipped with interior through-hole, and the nozzle pedestal is equipped with the outer through-hole that is linked together with interior through-hole.
Preferably, the included angle of the tapered hole is 90 degrees.
Preferably, the nozzle body is fixed in the mounting hole of the nozzle base body by adopting a powder metallurgy or brazing mode.
Preferably, the bottom of the nozzle body is further provided with a chamfer attached to the bottom of the placing hole.
Preferably, the nozzle holder body is made of tungsten steel material.
The invention also provides a manufacturing method of the nozzle for dispensing, which comprises the following steps:
1) welding: welding a cylindrical nozzle body made of polycrystalline diamond in a placing hole of a nozzle base body to form a semi-finished product;
2) clamping: obliquely clamping the semi-finished product on a workbench for rotation;
3) processing a conical hole; firstly, nanosecond laser beams are adopted to carry out rough machining on polycrystalline diamond in the semi-finished product, and then picosecond laser beams are adopted to carry out fine machining.
Preferably, the nozzle body and the nozzle seat body in the step 1) are welded by adopting a powder metallurgy or brazing mode.
More preferably, the bottom of the cylindrical nozzle body is chamfered before welding in step 1).
Preferably, the semi-finished product in the step 2) is clamped on a workbench at an included angle of 3.5 degrees of the inclined angle.
Preferably, the light cone angle of the laser beam is 7 degrees, and the light focus of the laser beam scans and processes layer by layer from top to bottom with the amplitude of 0.05 mm.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a nozzle for dispensing, which is characterized in that a nozzle body made of polycrystalline diamond is arranged in a nozzle seat body, is directly difficult to generate chemical reaction with a workpiece material, cannot generate cobalt loss problem, can effectively reduce the downtime and machine adjustment time caused by frequent replacement of parts, and ensures the stability of the processing quality.
Drawings
FIG. 1 is a schematic view of a dispensing nozzle according to the present invention;
FIG. 2 is a schematic view of a nozzle body of a dispensing nozzle according to the present invention;
FIG. 3 is a schematic view of an unprocessed nozzle body in the manufacturing method of a dispensing nozzle according to the present invention;
FIG. 4 is a schematic view of an unprocessed nozzle base in the manufacturing method of a nozzle for dispensing according to the present invention;
FIG. 5 is a schematic diagram of a nanosecond laser rotation process used in the manufacturing method of the dispensing nozzle provided by the invention;
fig. 6 is a schematic view of picosecond laser rotation processing adopted in the manufacturing method of the dispensing nozzle provided by the invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 to 2 show a preferred embodiment of a dispensing nozzle according to the present invention. As shown in fig. 1 to 2, the dispensing nozzle includes a nozzle base 10 and a cylindrical nozzle body 20 made of polycrystalline diamond, a mounting hole 11 for mounting the nozzle body is formed in the nozzle base, a tapered hole 21 matched with the top end portion of an external firing pin is formed in the nozzle body, an included angle of the tapered hole is 90 degrees, an inner through hole 211 is formed in the bottom of the tapered hole, the nozzle base 10 is provided with an outer through hole 12 communicated with the inner through hole, thus, when dispensing, the top end portion of the firing pin impacts the nozzle body 20 in the nozzle base 10, chemical reaction is directly difficult to occur with a workpiece material, the problem of cobalt loss is avoided, the downtime and the machine adjustment time caused by frequent replacement of parts can be effectively reduced, and the stability of processing quality is ensured.
The nozzle body 20 is fixed in the mounting hole 11 of the nozzle seat body 10 by adopting a powder metallurgy or brazing mode, and specifically, silver-copper alloy soldering paste can be adopted and welded by adopting a brazing mode; the nozzle body 20 may also be sintered in the nozzle holder body in a powder metallurgical manner. The bottom of the nozzle body 20 is also provided with a chamfer which is attached to the bottom of the placing hole and is about 0.1mm, so that no gap exists between the cylindrical bottom of the nozzle body 20 and the bottom of the placing hole 11 of the nozzle base body 10. The nozzle base body is made of tungsten steel, and the granularity of the tungsten steel is controlled to be 0.5-1 um so as to ensure that the surface roughness of subsequently processed holes and surfaces reaches Ra0.2.
As shown in fig. 3 to 6, the present invention further provides a method for manufacturing a dispensing nozzle, comprising the following steps:
1) welding: welding a cylindrical nozzle body made of polycrystalline diamond in a placing hole of a nozzle base body to form a semi-finished product;
2) clamping: obliquely clamping the semi-finished product on a workbench for rotation;
3) processing a conical hole; firstly, nanosecond laser beams are adopted to carry out rough machining on polycrystalline diamond in the semi-finished product, and then picosecond laser beams are adopted to carry out fine machining.
In the step 1), the nozzle body 20 and the nozzle base body 10 are welded in a powder metallurgy or brazing mode; specifically, silver-copper alloy soldering paste is adopted and welded in a brazing mode; the nozzle body 20 may also be sintered in the nozzle holder body in a powder metallurgical manner. In addition, before welding in the step 1), the bottom of the cylindrical nozzle body is chamfered, and the chamfer angle is about 0.1mm, so that no gap exists between the cylindrical bottom of the nozzle body 20 and the bottom of the mounting hole 11 of the nozzle base body 10.
And 2) clamping the semi-finished product on a workbench at an included angle of 3.5 degrees of an inclined angle. In the step 3, the light cone angle of the laser beam in the nanosecond laser and the picosecond laser is 7 degrees, in the process of machining the conical hole, the light focus of the laser beam is scanned and machined layer by layer with the amplitude of 0.05mm from top to bottom, and the inner through hole 211 and the outer through hole 12 are formed in the bottom of the formed conical hole in a positioning and machining mode; an end-pumped green laser can be adopted, and the main indexes of the laser are that the laser wavelength is 0.532 micron, the laser power is 7W (single mode), and the laser frequency is 1-30 KHz. It is noted that in rough machining, a margin is required to be left for subsequent finish machining.
In summary, the technical solutions of the present invention can fully and effectively achieve the above objects, and the structural and functional principles of the present invention have been fully verified in the embodiments, so as to achieve the expected efficacy and objects, and various changes or modifications can be made to the embodiments of the present invention without departing from the principles and spirit of the present invention. Accordingly, this invention includes all modifications encompassed within the scope of the claims appended hereto, and any equivalents thereof which fall within the scope of the claims appended hereto.
Claims (10)
1. The utility model provides a nozzle for point is glued, its characterized in that includes the nozzle pedestal and adopts the cylindrical nozzle body that polycrystalline diamond made, is equipped with the hole of laying that is used for laying the nozzle body in the nozzle pedestal, and this internal formation of nozzle is used for with outside firing pin top portion complex bell mouth, and the bottom of bell mouth is equipped with interior through-hole, and the nozzle pedestal is equipped with the outer through-hole that is linked together with interior through-hole.
2. The dispensing nozzle of claim 1, wherein: the included angle of the taper hole is 90 degrees.
3. The dispensing nozzle of claim 1, wherein: the nozzle body is fixed in the mounting hole of the nozzle base body in a powder metallurgy or brazing mode.
4. The dispensing nozzle of claim 1, wherein: and a chamfer attached to the bottom of the placing hole is further arranged at the bottom of the nozzle body.
5. The dispensing nozzle of claim 1, wherein: the nozzle seat body is made of tungsten steel materials.
6. A method for manufacturing a dispensing nozzle as claimed in any one of claims 1 to 5, comprising the steps of:
1) welding: welding a cylindrical nozzle body made of polycrystalline diamond in a placing hole of a nozzle base body to form a semi-finished product;
2) clamping: obliquely clamping the semi-finished product on a workbench for rotation;
3) processing a conical hole; firstly, nanosecond laser beams are adopted to carry out rough machining on polycrystalline diamond in the semi-finished product, and then picosecond laser beams are adopted to carry out fine machining.
7. The method of manufacturing a dispensing nozzle according to claim 6, wherein: in the step 1), the nozzle body and the nozzle base body are welded in a powder metallurgy or brazing mode.
8. The method of manufacturing a dispensing nozzle according to claim 6, wherein: in the step 1), before welding, chamfering is carried out on the bottom of the cylindrical nozzle body.
9. The method of manufacturing a dispensing nozzle according to claim 6, wherein: and 2) clamping the semi-finished product on a workbench at an included angle of 3.5 degrees of an inclination angle.
10. The method of manufacturing a dispensing nozzle according to claim 6, wherein: the light cone angle of the laser beam is 7 degrees, and the light focus of the laser beam scans and processes layer by layer with the amplitude of 0.05mm from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086089.4A CN113769979A (en) | 2021-09-16 | 2021-09-16 | Nozzle for dispensing and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086089.4A CN113769979A (en) | 2021-09-16 | 2021-09-16 | Nozzle for dispensing and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113769979A true CN113769979A (en) | 2021-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111086089.4A Pending CN113769979A (en) | 2021-09-16 | 2021-09-16 | Nozzle for dispensing and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113769979A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1133757A (en) * | 1997-07-16 | 1999-02-09 | Nissan Motor Co Ltd | Welding metal powder feeding device |
| US6715701B1 (en) * | 1998-01-15 | 2004-04-06 | Nitinol Technologies, Inc. | Liquid jet nozzle |
| CN1603077A (en) * | 2004-11-25 | 2005-04-06 | 李尚劼 | Method for processing crystal combination diamond and products thereof |
| WO2008032272A2 (en) * | 2006-09-12 | 2008-03-20 | Element Six B.V. | Waterjet nozzle |
| CN103862525A (en) * | 2012-12-17 | 2014-06-18 | 刘智 | Suspension liquid jet flow nozzle |
| CN106984913A (en) * | 2017-05-13 | 2017-07-28 | 深圳光韵达激光应用技术有限公司 | A kind of full laser preparation method of diamond cutter |
| CN109127170A (en) * | 2018-09-11 | 2019-01-04 | 洛阳誉芯金刚石有限公司 | A kind of diamond that high-precision is wear-resisting spray piece |
| CN209438914U (en) * | 2019-01-17 | 2019-09-27 | 安兴精密(深圳)有限公司 | A kind of dispensing nozzle |
| CN110814343A (en) * | 2019-11-14 | 2020-02-21 | 长安大学 | Diesel engine fuel injector and nozzle manufacturing process |
-
2021
- 2021-09-16 CN CN202111086089.4A patent/CN113769979A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1133757A (en) * | 1997-07-16 | 1999-02-09 | Nissan Motor Co Ltd | Welding metal powder feeding device |
| US6715701B1 (en) * | 1998-01-15 | 2004-04-06 | Nitinol Technologies, Inc. | Liquid jet nozzle |
| CN1603077A (en) * | 2004-11-25 | 2005-04-06 | 李尚劼 | Method for processing crystal combination diamond and products thereof |
| WO2008032272A2 (en) * | 2006-09-12 | 2008-03-20 | Element Six B.V. | Waterjet nozzle |
| CN103862525A (en) * | 2012-12-17 | 2014-06-18 | 刘智 | Suspension liquid jet flow nozzle |
| CN106984913A (en) * | 2017-05-13 | 2017-07-28 | 深圳光韵达激光应用技术有限公司 | A kind of full laser preparation method of diamond cutter |
| CN109127170A (en) * | 2018-09-11 | 2019-01-04 | 洛阳誉芯金刚石有限公司 | A kind of diamond that high-precision is wear-resisting spray piece |
| CN209438914U (en) * | 2019-01-17 | 2019-09-27 | 安兴精密(深圳)有限公司 | A kind of dispensing nozzle |
| CN110814343A (en) * | 2019-11-14 | 2020-02-21 | 长安大学 | Diesel engine fuel injector and nozzle manufacturing process |
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Application publication date: 20211210 |
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| RJ01 | Rejection of invention patent application after publication |