CN113145766A - Metal wire forming device - Google Patents
Metal wire forming device Download PDFInfo
- Publication number
- CN113145766A CN113145766A CN202110318486.3A CN202110318486A CN113145766A CN 113145766 A CN113145766 A CN 113145766A CN 202110318486 A CN202110318486 A CN 202110318486A CN 113145766 A CN113145766 A CN 113145766A
- Authority
- CN
- China
- Prior art keywords
- wire
- die
- pressing sleeve
- metal wire
- forming apparatus
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 51
- 239000002184 metal Substances 0.000 title claims abstract description 51
- 238000003825 pressing Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 210000004204 blood vessel Anatomy 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 210000000709 aorta Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 101000711466 Homo sapiens SAM pointed domain-containing Ets transcription factor Proteins 0.000 description 1
- 102100034018 SAM pointed domain-containing Ets transcription factor Human genes 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 210000000702 aorta abdominal Anatomy 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
- B21F45/008—Wire-working in the manufacture of other particular articles of medical instruments, e.g. stents, corneal rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a metal wire forming device, which is used for solving the problems that in the prior art, the preparation precision of a large blood vessel stent is low, the whole stent has a plurality of riveted joints, the efficiency is low, and the yield is low. The method comprises the following steps: a wire pressing sleeve and a die; the die is a cylinder, the positioning groove is in a wavy line shape and is positioned in the middle of the die and surrounds the die for a circle; the die is sleeved with a line pressing sleeve, the side surface of the line pressing sleeve is provided with a line outlet, and the length range of the line pressing sleeve at least covers the distance from the wave crest to the wave trough of the positioning groove. The beneficial effects of the invention include: the prepared smooth metal wire is positioned and molded by the metal wire molding device to form the wavy metal ring, the method is simple and easy, subsequent polishing is not needed, the metal wire can be pressed into the opposite positioning grooves at one time, the positioning grooves can be fully distributed by the metal wire along with the wire pressing sleeve, and the shaping is carried out by electrifying and heating, so that the production cost is reduced, the yield is high, and the manufactured heart stent is safe and durable without rivet joints.
Description
The technical field is as follows:
the invention relates to the technical field of mechanical manufacturing process and equipment, in particular to a metal wire forming device.
Background art:
the heart aorta and abdominal aorta bracket is a common medical appliance in cardiovascular intervention operation, and has the function of dredging artery vessel. The main material is stainless steel, nickel-titanium alloy or cobalt-chromium alloy. The earliest appeared in the 80's of the 20 th century.
The heart aorta and abdominal cavity stent is a metal reticular tube formed by connecting a plurality of wave-shaped metal wire rings up and down, the wave-shaped metal wire is wound by adopting an intelligent processing center with more than 7 shafts abroad, and the equipment and the technology cannot be obtained at home. The domestic preparation process is as follows: cutting a silk thread, manually folding a single ring to form a wavy ring, heating, bending, cooling and shaping each bending point, riveting the end of the silk thread by the upper and lower rings through riveting pipes, cleaning, manually sewing a PDEF membrane, sterilizing, packaging and discharging; in the domestic preparation method, the riveted joint has the risk of rivet stripping and the possibility of platelet adhesion and deposition. The efficiency is low, and the accuracy of the programming is also low, so the yield is low.
The invention content is as follows:
the invention provides a metal wire forming device, which is used for solving the problems that in the prior art, the preparation precision of a large blood vessel stent is low, the whole stent has a plurality of riveted joints, the efficiency is low, and the yield is low.
The invention provides a metal wire forming device, comprising: a wire pressing sleeve and a die; the die is a cylinder, the positioning groove is in a wavy line shape and is positioned in the middle of the die and surrounds the die for a circle; the die is sleeved with a line pressing sleeve, the side surface of the line pressing sleeve is provided with a line outlet, and the length range of the line pressing sleeve at least covers the distance from the wave crest to the wave trough of the positioning groove.
Preferably, the positioning groove is a semicircular groove.
Preferably, the mold is provided with a wire inlet groove, the wire inlet groove is positioned on a bus position of the mold and is arranged on one bottom surface of the mold, and the terminal point is communicated with the positioning groove.
Preferably, the wire inlet groove is a semicircular groove, and one end of the wire inlet groove is located at the position where the positioning groove is closest to one bottom surface of the mold.
Preferably, a positioning shoulder is arranged on one bottom surface of the mold.
Preferably, the line pressing sleeve is cylindrical and is vertically communicated, the inner diameter of the line pressing sleeve is the same as the outer diameter of the die, a guide sliding groove is formed in the edge position of the wire outlet inside the line pressing sleeve, and the direction of the guide sliding groove is along the axis of the die.
Preferably, the cross section of the guide sliding groove is in a shape of a lock hole formed by splicing a circle and a rectangle, and the side length of the connection of the rectangle and the circle is smaller than the diameter of the circle.
The preferred sets up the universal slider who matches in the direction spout, when gliding along the wire spout, can be around self endwise slip, and the below of universal slider sets up the lead nose.
Preferably, the upper part of the universal sliding block is a sphere, and the lower part of the universal sliding block is a cylinder.
Preferably, the wire forming apparatus further comprises: the power supply is connected with the connection points at the two ends of the connection metal wire; the wire pressing sleeve and the die are made of insulating materials, two ends of a metal wire pressed into the fixing groove are respectively connected with a connecting point, and the metal wire is instantly heated and fixed through power supply electrification.
The beneficial effects of the invention include: the prepared smooth metal wire is positioned and molded by the metal wire molding device to form the wavy metal ring, the method is simple and easy, subsequent polishing is not needed, the metal wire can be pressed into the opposite positioning grooves at one time, the positioning grooves can be fully distributed by the metal wire along with the wire pressing sleeve, and the shaping is carried out by electrifying and heating.
Description of the drawings:
FIG. 1 is a perspective schematic view of a preferred embodiment of a wire forming apparatus.
FIG. 2 is a perspective view of a preferred embodiment of a wire forming apparatus.
FIG. 3 is a schematic perspective view of a preferred embodiment of a mold;
FIG. 4 is a schematic cross-sectional view of a preferred embodiment of a wire forming apparatus;
FIG. 5 is an enlarged schematic view of the position A in FIG. 1;
FIG. 6 is a schematic view of a preferred embodiment of a wire crimping sleeve;
fig. 7 is a schematic structural view of a heart support in a foot rest embodiment.
The specific implementation mode is as follows:
in view of the above, the present invention provides a wire forming apparatus, and the following describes a preferred embodiment of the present invention with reference to the drawings.
Referring to fig. 1 to 6, a wire forming apparatus includes a wire pressing sleeve 1 and a die 2; the mold 2 is a cylinder, the positioning groove 201 is in a wavy line shape and is positioned in the middle of the mold 2 and surrounds the mold 2 for one circle; the die 2 is sleeved with the line pressing sleeve 1, the side surface of the line pressing sleeve 1 is provided with a line outlet 104, and the length range of the line pressing sleeve at least covers the distance from the wave crest of the positioning groove 201 to the wave trough.
In particular, a metal net barrel type product in daily life, such as a heart stent shape, can be shaped by the metal wire forming device in the invention; the positioning groove 201 in the die 2 is a semicircular groove and is suitable for shaping metal wires; place into the design groove with the wire, through rotatory wire pressing sleeve 1, impress the wire between wire pressing sleeve 1 and the design groove to carry out ohmic heating and design with the both ends of wire, take off wire pressing sleeve 1 from mould 2, can obtain the metal loop of annular wave line type.
The mold 2 is provided with a wire inlet groove 202, the wire inlet groove 202 is positioned on a bus position of the mold 2 and starts from one bottom surface of the mold 2, and the end point is communicated with the positioning groove 201. The wire may be threaded through the wire insertion groove 202, and the starting end of the wire may be fixed from the outside of the wire insertion groove 202. The wire inlet groove 202 is a semicircular groove, and one end of the wire inlet groove is located at the position where the positioning groove 201 is closest to one bottom surface of the mold 2. Thus, the shortest wire-entering groove 202 is ensured, and the metal wire is most easily penetrated into the shaping groove. One bottom surface of the mold 2 is provided with a positioning shoulder 203. When the wire pressing sleeve 1 is sleeved on the die 2, the wire pressing sleeve is just stopped by the positioning shaft shoulder 203, and can play a role of a limiting guide rail when the wire pressing sleeve 1 rotates, so that the wire pressing sleeve 1 rotates at a certain position, and a metal wire is pressed into the positioning groove 201.
The line ball sleeve 1 is cylindrical and is vertically through, the inner diameter of the line ball sleeve 1 is the same as the outer diameter of the die 2, a guide sliding groove 103 is arranged in the line ball sleeve 1 and at the edge position of a line outlet 104, and the direction of the guide sliding groove 103 is along the axis of the die 2. The cross section of the guide chute 103 is in a shape of a lock hole formed by splicing a circle and a rectangle, and the side length of the connection of the rectangle and the circle is smaller than the diameter of the circle. Set up the universal slider 102 that matches in the direction spout 103, when gliding along the wire spout, can slide around self axial, the below of universal slider 102 sets up lead wire nose 101. The upper portion of the universal sliding block 102 is a sphere, and the lower portion thereof is a cylinder. After the metal wire penetrates from the wire inlet groove 202, the metal wire needs to be firstly threaded into the lead nose 101, the metal wire is brought into the fixed groove by the lead nose 101 in the process of rotating the wire pressing sleeve 1, and after the metal wire is brought into the fixed groove, the metal wire is pressed into the fixed groove 201 by the wire pressing sleeve 1 through rotation, so that the effect of fixing the metal wire in the fixed groove 201 is realized; the gimbal block 102 can not only move linearly in the guide runner 103, but also rotate along with the wire during the wire leading process.
The wire forming apparatus of the present invention further comprises: the power supply is connected with the connection points at the two ends of the connection metal wire; the wire pressing sleeve 1 and the die 2 are made of insulating materials, two ends of a metal wire pressed into the fixing groove are respectively connected with a connecting point, and the metal wire is fixed through power supply energization and heating.
The metal wire forming device can be used for preparing large-scale wavy annular metal products and also can be small enough to prepare metal products with the structure of the heart stent; generally, an apparatus for making such a dissimilar metal article is provided; referring to fig. 7, after a circle of wavy rings is manufactured, the heart stent manufactured by the metal wire forming device of the present invention is directly bent downwards to continue to move to the next circle without being cut off, so that the next circle of wavy rings is manufactured, and so on; specifically, firstly, a metal wire penetrates through the lead nose 101, one end of the metal wire is placed in the wire inlet groove 202, the lead nose 101 is placed in the track of the positioning groove 201, the other end of the metal wire is pulled out of the wire outlet 104, and in an initial state, one end of the metal wire extends out of the wire inlet groove 202, then enters the positioning groove 201, penetrates through the lead nose 101, and extends out of the position of the wire outlet 104 of the wire pressing sleeve 1 through the positioning groove 201; then from the income wire casing 202 to outlet 104 position rotation line ball sleeve 1, during the rotation, the wire can follow lead nose 101 and advance in constant head tank 201, and the wire follows to advance simultaneously, line ball sleeve 1 is pressed the wire into constant head tank 201 simultaneously, through the round rotation, the wire distributes the whole circle route of constant head tank 201, at this moment with the both ends ohmic heating of wire, until the cooling design, take out line ball sleeve 1 again, can take out the wave metal ring after the shaping, the joint of accomplishing the metal ring after the round continues to pass through outlet 104 and lead nose 101, continue to rotate the round, through the design preparation, the centre does not cut, just be difficult to form the thrombus in the blood vessel of packing into.
Claims (10)
1. A wire forming apparatus, comprising: a wire pressing sleeve and a die; the die is a cylinder, the positioning groove is in a wavy line shape and is positioned in the middle of the die and surrounds the die for a circle; the die is sleeved with a line pressing sleeve, the side surface of the line pressing sleeve is provided with a line outlet, and the length range of the line pressing sleeve at least covers the distance from the wave crest to the wave trough of the positioning groove.
2. The wire forming apparatus of claim 1 wherein the positioning slot is a semi-circular slot.
3. The wire forming apparatus as claimed in claim 1, wherein the die is provided with a wire-entering groove which is located at a generatrix position of the die and which starts from one of bottom surfaces of the die and terminates in the positioning groove.
4. The wire forming apparatus of claim 3 wherein the wire entry slot is a semi-circular slot having one end located proximate one of the bottom surfaces of the die.
5. The wire forming apparatus of claim 1, wherein a bottom surface of the die is provided with a locating shoulder.
6. The wire molding apparatus as claimed in claim 1, wherein the wire pressing sleeve is formed in a cylindrical shape extending vertically, the inner diameter of the wire pressing sleeve is equal to the outer diameter of the mold, and guide grooves are provided in the wire pressing sleeve at the edge of the wire outlet, the guide grooves being oriented along the axis of the mold.
7. The wire forming apparatus of claim 6, wherein the cross-sectional shape of the guide runner is a keyhole shape formed by splicing a circle and a rectangle, and the side length of the connection of the rectangle and the circle is smaller than the diameter of the circle.
8. The wire forming apparatus of claim 6, wherein the guide runner has a mating gimbal disposed therein for sliding axially around itself while sliding along the wire guide runner, and a wire nose is disposed below the gimbal.
9. The wire forming apparatus of claim 8, wherein the gimbal block has a spherical upper portion and a cylindrical lower portion.
10. The wire forming apparatus as claimed in claim 1, further comprising: the power supply is connected with the connection points at the two ends of the connection metal wire; the wire pressing sleeve and the die are made of insulating materials, two ends of a metal wire pressed into the fixing groove are respectively connected with a connecting point, and the metal wire is fixed through power supply electrification and heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110318486.3A CN113145766A (en) | 2021-03-25 | 2021-03-25 | Metal wire forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110318486.3A CN113145766A (en) | 2021-03-25 | 2021-03-25 | Metal wire forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113145766A true CN113145766A (en) | 2021-07-23 |
Family
ID=76884820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110318486.3A Pending CN113145766A (en) | 2021-03-25 | 2021-03-25 | Metal wire forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113145766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603013A (en) * | 2022-02-16 | 2022-06-10 | 深圳高性能医疗器械国家研究院有限公司 | Shaping method of super-elastic orthodontic material and obtained super-elastic orthodontic material |
| CN114701104A (en) * | 2022-04-29 | 2022-07-05 | 深圳市库珀科技发展有限公司 | Covered stent and monofilament pressing device thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0857057A (en) * | 1994-08-12 | 1996-03-05 | Meadox Medicals Inc | High strength and high density wire stent for internal cavity |
| CN103785901A (en) * | 2013-09-09 | 2014-05-14 | 凡登（常州）新型金属材料技术有限公司 | Heterogeneous metal wire, production device thereof and preparation method thereof |
| US9173753B1 (en) * | 2012-05-11 | 2015-11-03 | W. L. Gore & Associates, Inc. | System and method for forming an endoluminal device |
| CN205128778U (en) * | 2015-09-21 | 2016-04-06 | 深圳市冠旭电子有限公司 | Winding fixture |
| KR20200109006A (en) * | 2019-03-12 | 2020-09-22 | 대원강업주식회사 | Manufacturing Method of Coil-Spring for Car Suspension |
| CN215144200U (en) * | 2021-03-25 | 2021-12-14 | 李昂 | Metal wire forming device |
-
2021
- 2021-03-25 CN CN202110318486.3A patent/CN113145766A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0857057A (en) * | 1994-08-12 | 1996-03-05 | Meadox Medicals Inc | High strength and high density wire stent for internal cavity |
| US9173753B1 (en) * | 2012-05-11 | 2015-11-03 | W. L. Gore & Associates, Inc. | System and method for forming an endoluminal device |
| CN103785901A (en) * | 2013-09-09 | 2014-05-14 | 凡登（常州）新型金属材料技术有限公司 | Heterogeneous metal wire, production device thereof and preparation method thereof |
| CN205128778U (en) * | 2015-09-21 | 2016-04-06 | 深圳市冠旭电子有限公司 | Winding fixture |
| KR20200109006A (en) * | 2019-03-12 | 2020-09-22 | 대원강업주식회사 | Manufacturing Method of Coil-Spring for Car Suspension |
| CN215144200U (en) * | 2021-03-25 | 2021-12-14 | 李昂 | Metal wire forming device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603013A (en) * | 2022-02-16 | 2022-06-10 | 深圳高性能医疗器械国家研究院有限公司 | Shaping method of super-elastic orthodontic material and obtained super-elastic orthodontic material |
| CN114701104A (en) * | 2022-04-29 | 2022-07-05 | 深圳市库珀科技发展有限公司 | Covered stent and monofilament pressing device thereof |
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