CN107164790A - A kind of anti-clogging processing method of dispensing needle head - Google Patents
A kind of anti-clogging processing method of dispensing needle head Download PDFInfo
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- CN107164790A CN107164790A CN201710404475.0A CN201710404475A CN107164790A CN 107164790 A CN107164790 A CN 107164790A CN 201710404475 A CN201710404475 A CN 201710404475A CN 107164790 A CN107164790 A CN 107164790A
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- needle head
- dispensing needle
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/02—Electrolytic coating other than with metals with organic materials
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Chemically Coating (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The present invention relates to dispensing needle head technical field, the anti-clogging processing method of more particularly to a kind of dispensing needle head, the processing method includes：Step one, degreasing degreasing is handled；Step 2, processing of rust removing；Step 3, activation process；Step 4, pre- plating；Step 5, EFI plating.The present invention is due to after by EFI plating, one layer of nanometer polytetrafluoroethylcomposite coating is plated in the surface EFI of dispensing needle head, it is effective to prevent dispensing needle head from occurring chemical reaction generation solidification with glue and blocking syringe needle, and then enable dispensing needle head to reach nonclogging effect, and then operating personnel can be avoided to block the substantial amounts of time that can waste in processing syringe needle, thus improve production efficiency.
Description
Technical field
The present invention relates to dispensing needle head technical field, the anti-clogging processing method of more particularly to a kind of dispensing needle head.
Background technology
Dispensing, is a kind of technique, also referred to as applying glue, gluing, encapsulating, drop glue etc., is electronics glue, oil or other liquid
Smearing, embedding, point are dripped on product, allow product play paste, the effect such as embedding, insulation, fixation, surface are smooth.Dispensing operation
In need to use dispensing needle head.
In the instant drying adhesive water operation of the existing producing line of earphone industry, point Instant cement typically uses artificial mode for dispensing glue, so
And, there is glue amount and control uneven defect in artificial dispensing, i.e., artificial quality discrepancy for dispensing glue is larger, in turn result in product quality
It is bad.Moreover, the syringe needle of dispensing is easy to block in the prior art, after dispensing needle head is blocked, operating personnel is in processing pin
Head can waste the substantial amounts of time on blocking, and then have a strong impact on production efficiency.
The content of the invention
It is an object of the invention to provided for weak point of the prior art at a kind of anti-clogging of dispensing needle head
Reason method.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions.
A kind of anti-clogging processing method of dispensing needle head is provided, it comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch certain time, takes out, spends
Ionized water is cleaned；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch certain time, to dispensing needle head surface
Take out, cleaned with deionized water after light；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion certain time, is taken out；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and controls certain current value
With the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 250g/L~300g/L
NiCl2.6H2O 30g/L~60g/L
H3BO3 35g/L~40g/L；
Step 5, EFI plating：EFI plating solution is first allocated, surfactant and polytetrafluoro are added into the Watts bath of step 4
Ethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after certain temperature, in certain jet velocity and electricity
By EFI plating solution spraying plating to dispensing needle head surface under current density, and then complete the anti-clogging processing of dispensing needle head.
In above-mentioned technical proposal, in the step one, the degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L。
In above-mentioned technical proposal, in the step one, dispensing needle head is put into degreasing fluid, at room temperature etch 3min ~
7min。
In above-mentioned technical proposal, in the step 2, the rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L。
In above-mentioned technical proposal, in the step 2, dispensing needle head is put into rust removing solution, at room temperature etch 3min ~
7min。
In above-mentioned technical proposal, in the step 3, the concentration of the sulfuric acid is 35g/L ~ 45g/L.
In above-mentioned technical proposal, in the step 3, dispensing needle head is immersed activated in sulfuric acid at room temperature, during immersion
Between be 25min ~ 35min.
In above-mentioned technical proposal, in the step 4, the current value is 8A/dm2 ~ 12A/dm2, and the preplating time is
3min~7min。
In above-mentioned technical proposal, in the step 5, the surfactant is FC4 surfactants, the EFI plating
The temperature of liquid is increased to 43 DEG C ~ 48 DEG C, and the jet velocity is 3m/s-1~4m/s-1, the current density is 1A/m2~2A/m2,
The particle diameter of the polytetrafluorethylenano nano particulate is 10nm ~ 80nm.
In above-mentioned technical proposal, in the step 5, in the EFI plating solution, the concentration of the surfactant is 45g/
L ~ 55g/L, the concentration of the polytetrafluorethylenano nano particulate is 90g/L ~ 110g/L；In dispensing needle head after the EFI plating
The thickness for the coating that surface is formed is 5 μm ~ 10 μm.
Beneficial effects of the present invention：
（1）The anti-clogging processing method for a kind of dispensing needle head that the present invention is provided, after by EFI plating, in a plastic pin
The surface EFI of head plates one layer of nanometer polytetrafluoroethylcomposite coating, effectively prevents dispensing needle head from occurring chemical reaction with glue and producing
Solidify and block syringe needle, and then enable dispensing needle head to reach nonclogging effect, and then operating personnel can be avoided at place
Reason syringe needle blocks the substantial amounts of time that can waste, thus improves production efficiency.
（2）The anti-clogging processing method for a kind of dispensing needle head that the present invention is provided, due to the surface EFI in dispensing needle head
Plate one layer of nanometer polytetrafluoroethylcomposite coating so that syringe needle possesses non-stick, and glue will not be clung in needle surface flowing, and then be subtracted
The possibility blocked after the glue solidifies is lacked.
（3）The anti-clogging processing method for a kind of dispensing needle head that the present invention is provided, due to the surface EFI in dispensing needle head
Plate one layer of nanometer polytetrafluoroethylcomposite coating so that syringe needle has anti-permeability, and glue can not directly be contacted with syringe needle, it is impossible to iron
Chemical reaction is produced, the possibility of syringe needle blocking is reduced.
（4）The anti-clogging processing method for a kind of dispensing needle head that the present invention is provided, due to the surface EFI in dispensing needle head
Plate one layer of nanometer polytetrafluoroethylcomposite coating so that syringe needle has the function of reducing friction, and during syringe needle use, frictional force subtracts
The small flowing for being conducive to glue, reduce because the big glue of frictional force can not flow solidify after block the possibility of syringe needle.
（5）A kind of anti-clogging processing method for dispensing needle head that the present invention is provided, simple with method, production cost is low,
And can be applied to large-scale production the characteristics of.
Brief description of the drawings
Fig. 1 is the knot of the cross section of the syringe needle after the anti-clogging processing method processing using a kind of dispensing needle head of the present invention
Structure schematic diagram.
Reference：
Syringe needle 1；
Outside coating 2；
Internal coating 3.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Drawings and examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Wherein, the FC4 surfactants as fluorocarbon surfactant that the present invention is referred to.
Embodiment 1.
A kind of anti-clogging processing method of dispensing needle head of the present embodiment, it comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch 5min, takes out, uses deionization
Water is cleaned；
Wherein, degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch 5min, to dispensing needle head surface-brightening
After take out, cleaned with deionized water；
Wherein, rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion 30min, is taken out；This reality
Apply in example, the concentration of sulfuric acid is 40g/L；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and control electric current value is 10A/
Dm2, it is 5min to control the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 280g/L
NiCl2.6H2O 45g/L
H3BO3 38g/L；
Step 5, EFI plating：EFI plating solution is first allocated, FC4 surfactants are added into the Watts bath of step 4 and poly-
Tetrafluoroethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after 45 DEG C, in 3.33m/s-1Jet velocity
And 1.5A/m2Current density under by EFI plating solution spraying plating to dispensing needle head surface, and then complete at the anti-clogging of dispensing needle head
Reason.In the present embodiment, the particle diameter of polytetrafluorethylenano nano particulate is 50nm；In the present embodiment, in EFI plating solution, surfactant
Concentration be 50g/L, the concentration of polytetrafluorethylenano nano particulate is 100g/L；Formed after EFI plating on dispensing needle head surface
Coating thickness be 7 μm.
Embodiment 2.
A kind of anti-clogging processing method of dispensing needle head of the present embodiment, it comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch 3min, takes out, uses deionization
Water is cleaned；
Wherein, degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch 3min, to dispensing needle head surface-brightening
After take out, cleaned with deionized water；
Wherein, rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion 25min, is taken out；This reality
Apply in example, the concentration of sulfuric acid is 35g/L；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and control electric current value is 8A/
Dm2, it is 3min to control the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 250g/L
NiCl2.6H2O 30g/L
H3BO3 35g/L；
Step 5, EFI plating：EFI plating solution is first allocated, FC4 surfactants are added into the Watts bath of step 4 and poly-
Tetrafluoroethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after 43 DEG C, in 3m/s-1Jet velocity and
1A/m2Current density under by EFI plating solution spraying plating to dispensing needle head surface, and then complete the anti-clogging processing of dispensing needle head.This
In embodiment, the particle diameter of polytetrafluorethylenano nano particulate is 10nm；In the present embodiment, in EFI plating solution, surfactant it is dense
Spend for 45g/L, the concentration of polytetrafluorethylenano nano particulate is 90g/L；The plating formed after EFI plating on dispensing needle head surface
The thickness of layer is 5 μm.
Embodiment 3.
A kind of anti-clogging processing method of dispensing needle head of the present embodiment, it comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch 7min, takes out, uses deionization
Water is cleaned；
Wherein, degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch 7min, to dispensing needle head surface-brightening
After take out, cleaned with deionized water；
Wherein, rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion 35min, is taken out；This reality
Apply in example, the concentration of sulfuric acid is 45g/L；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and control electric current value is 12A/
Dm2, it is 7min to control the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 300g/L
NiCl2.6H2O 60g/L
H3BO3 40g/L；
Step 5, EFI plating：EFI plating solution is first allocated, FC4 surfactants are added into the Watts bath of step 4 and poly-
Tetrafluoroethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after 48 DEG C, in 4m/s-1Jet velocity and
2A/m2Current density under by EFI plating solution spraying plating to dispensing needle head surface, and then complete the anti-clogging processing of dispensing needle head.This
In embodiment, the particle diameter of polytetrafluorethylenano nano particulate is 80nm；In the present embodiment, in EFI plating solution, surfactant it is dense
Spend for 55g/L, the concentration of polytetrafluorethylenano nano particulate is 110g/L；The plating formed after EFI plating on dispensing needle head surface
The thickness of layer is 10 μm.
Embodiment 4.
A kind of anti-clogging processing method of dispensing needle head of the present embodiment, it comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch 4min, takes out, uses deionization
Water is cleaned；
Wherein, degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch 4min, to dispensing needle head surface-brightening
After take out, cleaned with deionized water；
Wherein, rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion 27min, is taken out；This reality
Apply in example, the concentration of sulfuric acid is 38g/L；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and control electric current value is 9A/
Dm2, it is 47min to control the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 260g/L
NiCl2.6H2O 40g/L
H3BO3 32g/L；
Step 5, EFI plating：EFI plating solution is first allocated, FC4 surfactants are added into the Watts bath of step 4 and poly-
Tetrafluoroethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after 44 DEG C, in 3.2m/s-1Jet velocity
And 1.2A/m2Current density under by EFI plating solution spraying plating to dispensing needle head surface, and then complete at the anti-clogging of dispensing needle head
Reason.In the present embodiment, the particle diameter of polytetrafluorethylenano nano particulate is 30nm；In the present embodiment, in EFI plating solution, surfactant
Concentration be 48g/L, the concentration of polytetrafluorethylenano nano particulate is 95g/L；Formed after EFI plating on dispensing needle head surface
Coating thickness be 6 μm.
Embodiment 5.
A kind of anti-clogging processing method of dispensing needle head of the present embodiment, it comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch 6min, takes out, uses deionization
Water is cleaned；
Wherein, degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch 6min, to dispensing needle head surface-brightening
After take out, cleaned with deionized water；
Wherein, rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion 33min, is taken out；This reality
Apply in example, the concentration of sulfuric acid is 43g/L；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and control electric current value is 11A/
Dm2, it is 6min to control the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 290g/L
NiCl2.6H2O 50g/L
H3BO3 39g/L；
Step 5, EFI plating：EFI plating solution is first allocated, FC4 surfactants are added into the Watts bath of step 4 and poly-
Tetrafluoroethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after 47 DEG C, in 3.8m/s-1Jet velocity
And 1.8A/m2Current density under by EFI plating solution spraying plating to dispensing needle head surface, and then complete at the anti-clogging of dispensing needle head
Reason.In the present embodiment, the particle diameter of polytetrafluorethylenano nano particulate is 70nm；In the present embodiment, in EFI plating solution, surfactant
Concentration be 53g/L, the concentration of polytetrafluorethylenano nano particulate is 105g/L；Formed after EFI plating on dispensing needle head surface
Coating thickness be 9 μm.
Finally it should be noted that above example is merely to illustrate technical scheme rather than to present invention protection
The limitation of scope, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should manage
Solution, technical scheme can be modified or equivalent substitution, without departing from technical solution of the present invention essence and
Scope.
Claims (10)
1. a kind of anti-clogging processing method of dispensing needle head, it is characterised in that：It comprises the following steps：
Step one, degreasing degreasing is handled：Dispensing needle head is put into degreasing fluid, at room temperature after etch certain time, takes out, spends
Ionized water is cleaned；
Step 2, processing of rust removing：Dispensing needle head is put into rust removing solution, at room temperature etch certain time, to dispensing needle head surface
Take out, cleaned with deionized water after light；
Step 3, activation process：Dispensing needle head is immersed at room temperature and activated in sulfuric acid, after immersion certain time, is taken out；
Step 4, pre- plating：Pre- plating is carried out to dispensing needle head using Watts bath at room temperature, and controls certain current value
With the preplating time, wherein, Watts bath is made up of following component：
NiSO4.7H2O 250g/L~300g/L
NiCl2.6H2O 30g/L~60g/L
H3BO3 35g/L~40g/L；
Step 5, EFI plating：EFI plating solution is first allocated, surfactant and polytetrafluoro are added into the Watts bath of step 4
Ethene nanoparticle, is made EFI plating solution, then EFI plating solution is increased to after certain temperature, in certain jet velocity and electricity
By EFI plating solution spraying plating to dispensing needle head surface under current density, and then complete the anti-clogging processing of dispensing needle head.
2. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step one
In, the degreasing fluid is made up of following component：
NaOH 12.5g/L
Na3PO4 56.5g/L
Na2SiO3 8.0g/L。
3. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step one
In, dispensing needle head is put into degreasing fluid, at room temperature etch 3min ~ 7min.
4. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 2
In, the rust removing solution is made up of following component：
HNO3 131.5g/L
H2SO4 604g/L
Cl2 5g/L
Na3PO4.12H2O 31g/L。
5. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 2
In, dispensing needle head is put into rust removing solution, at room temperature etch 3min ~ 7min.
6. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 3
In, the concentration of the sulfuric acid is 35g/L ~ 45g/L.
7. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 3
In, dispensing needle head is immersed activated in sulfuric acid at room temperature, the immersion time is 25min ~ 35min.
8. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 4
In, the current value is 8A/dm2 ~ 12A/dm2, and the preplating time is 3min ~ 7min.
9. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 5
In, the surfactant is FC4 surfactants, and the temperature of the EFI plating solution is increased to 43 DEG C ~ 48 DEG C, the injection speed
Spend for 3m/s-1~4m/s-1, the current density is 1A/m2~2A/m2, the particle diameter of the polytetrafluorethylenano nano particulate for 10nm ~
80nm。
10. a kind of anti-clogging processing method of dispensing needle head according to claim 1, it is characterised in that：The step 5
In, in the EFI plating solution, the concentration of the surfactant is 45g/L ~ 55g/L, the polytetrafluorethylenano nano particulate
Concentration is 90g/L ~ 110g/L；The thickness of the coating formed after the EFI plating on dispensing needle head surface is 5 μm ~ 10 μm.
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Application publication date: 20170915 |