CN2730906Y - Integral aluminium alloy needle bar with micro arc oxide ceramic film on surface for sewing machine - Google Patents
Integral aluminium alloy needle bar with micro arc oxide ceramic film on surface for sewing machine Download PDFInfo
- Publication number
- CN2730906Y CN2730906Y CN 03249037 CN03249037U CN2730906Y CN 2730906 Y CN2730906 Y CN 2730906Y CN 03249037 CN03249037 CN 03249037 CN 03249037 U CN03249037 U CN 03249037U CN 2730906 Y CN2730906 Y CN 2730906Y
- Authority
- CN
- China
- Prior art keywords
- needle bar
- sewing machine
- micro arc
- ceramic film
- aluminium alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model relates to an integral aluminium alloy needle bar with micro arc oxide ceramic film on surface for sewing machine, the surface of the needle bar which is processed with micro arc oxide grows a layer wear-resistance ceramic film layer, and the inner surface of the head pore of the needle bar is strengthen, ensuring the reliability that the screw pore is butted tightly . The utility model has the advantages that the weight is light, and is favorable for enhancing sewing speed, the structure is simple, the machining accuracy is easy to ensure, the process of the surface micro arc oxidation is simple and the environment can't be polluted. The ceramic membrane layer has micropores, the oil film is easily formed while working, the wearability is good, and the noise is low when the needle bar works.
Description
Affiliated technical field
The utility model relates to a kind of needle bar of sewing machine, and specifically a kind of surface has the integral Al-alloy needle bar of sewing machine of Micro-Arc Oxidized Ceramic Coating.
Background technology
At present, known needle bar of sewing machine normally is threaded with shank head two parts by the shank body and forms.Shank body and function aluminium alloy is made, and in order to increase the ABRASION RESISTANCE on surface, the surface scribbles teflon coatings.The carbon steel manufacturing of shank head, handle through blackout on the surface.Teflon has certain ABRASION RESISTANCE, and steel stem head makes the screw that holds out against sewing needle solid and reliable.Though this kind structure can satisfy instructions for use, Teflon spreads complex process, the cost height.Shank is threaded with shank head two parts by the shank body and forms, and the processing technology complexity increases processing cost, and the machining accuracy of shank is difficult for guaranteeing.
Summary of the invention
In order to overcome existing needle bar of sewing machine in the deficiency that exists aspect production technology and the cost, the utility model provides a kind of needle bar of sewing machine.This shank is that integral Al-alloy is made, and its surface has Micro-Arc Oxidized Ceramic Coating.
The technical scheme that its technical problem that solves the utility model adopts is: at first needle bar of sewing machine is processed into the shank matrix with the integral Al-alloy bar, then its outer surface and head bore area is handled one deck Micro-Arc Oxidized Ceramic Coating of growth in situ 15～25 μ m through differential arc oxidation.The aluminum alloy differential arc oxidation ceramic film forms under high voltage, the flash function of current, aluminium is subjected to arcing and fusion when oxidation forms aluminium oxide, when speed is cold, undergo phase transition, equally distributed α and γ phase alumina have improved the hardness (reaching 1300-1500HV) of rete, for the ABRASION RESISTANCE of rete provides assurance.The formed diameter of differential arc oxidation is lubricated when the countless equally distributed micropore of 1～3 μ m is worked for shank to provide oil-bearing structure, and the ceramic film surface very easily forms oil film, has further improved ABRASION RESISTANCE.Screw is strengthened during differential arc oxidation, has guaranteed to hold out against the reliability of screw.
The beneficial effects of the utility model are: whole shank has alleviated shank weight, helps further improving sewing velocity.Whole shank is simple in structure, has reduced manufacturing procedure, is easy to processing, helps guaranteeing machining accuracy.The surface by micro-arc oxidation treatment process is simple, and cost is low, is beneficial to environmental protection.The ceramic film ABRASION RESISTANCE is far superior to teflon coatings.Shank endoporus and screw all can generate the reliability that ceramic layer has guaranteed to hold out against screw.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is a profilograph of the present utility model.
1. shank matrixes among the figure, 2. ceramic film, 3. through hole 4. holds out against screw, 5. the Sewing needles load hole.
The specific embodiment
In Fig. 1, shank matrix (1) is made through machining with rods and bars of aluminium alloy, its surface and the through hole (3) that need process, hold out against screw (4), Sewing needles load hole (5), reach the required precision of regulation through machining, handle the back through differential arc oxidation and form ceramic film (2) in the growth of shank matrix (1) surface in situ, while through hole (3), hold out against screw (4), Sewing needles load hole (5) is strengthened.Be the utility model after the shank polishing.
Claims (1)
- A kind of surface has the integral Al-alloy needle bar of sewing machine of Micro-Arc Oxidized Ceramic Coating, it is characterized in that: shank is made by aluminium alloy integral body, and the surface has one deck Micro-Arc Oxidized Ceramic Coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249037 CN2730906Y (en) | 2003-09-25 | 2003-09-25 | Integral aluminium alloy needle bar with micro arc oxide ceramic film on surface for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249037 CN2730906Y (en) | 2003-09-25 | 2003-09-25 | Integral aluminium alloy needle bar with micro arc oxide ceramic film on surface for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2730906Y true CN2730906Y (en) | 2005-10-05 |
Family
ID=35051245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03249037 Expired - Fee Related CN2730906Y (en) | 2003-09-25 | 2003-09-25 | Integral aluminium alloy needle bar with micro arc oxide ceramic film on surface for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2730906Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20080644A1 (en) * | 2008-12-03 | 2010-06-04 | Anna Sciamanna | EMBROIDERY ON COMPOSITE MATERIALS. |
| CN110424045A (en) * | 2019-07-31 | 2019-11-08 | 四川星皓医疗器械有限公司 | The attached sand technique of vehicle needle |
-
2003
- 2003-09-25 CN CN 03249037 patent/CN2730906Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20080644A1 (en) * | 2008-12-03 | 2010-06-04 | Anna Sciamanna | EMBROIDERY ON COMPOSITE MATERIALS. |
| CN110424045A (en) * | 2019-07-31 | 2019-11-08 | 四川星皓医疗器械有限公司 | The attached sand technique of vehicle needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Sun Dongfei Document name: Correction notice |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |