CN102954283B - Corrugated tube welding assembly and production method thereof - Google Patents
Corrugated tube welding assembly and production method thereof Download PDFInfo
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- CN102954283B CN102954283B CN201210422651.0A CN201210422651A CN102954283B CN 102954283 B CN102954283 B CN 102954283B CN 201210422651 A CN201210422651 A CN 201210422651A CN 102954283 B CN102954283 B CN 102954283B
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- lower valve
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- 238000003466 welding Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 4
- 230000000452 restraining effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The invention discloses a corrugated tube welding assembly and a production method thereof. The corrugated tube welding assembly comprises a lower valve rod (1), a corrugated tube (2) and an inner valve cover (3), wherein the corrugated tube (2) and the inner valve cover (3) are sequentially sleeved on the lower valve rod (1) from top to bottom, the corrugated tube comprises an upper end interface (21) and a lower end interface (22), the top part of the lower valve rod is provided with an annular flange (11) stretching outwards in a radial direction, the top part of the inner valve cover is provided with an axial protruding part (31) stretching towards the corrugated tube, the upper end interface of the corrugated tube is tightly matched and sleeved on the annular flange, the lower end interface of the corrugated tube is tightly matched and sleeved on the axial protruding part, thus the welding quality and the production efficiency are increased, the cost is lowered, the sealing performance is good, the service life is long, and the popularization and the use are convenient. The production method of the corrugated tube welding assembly comprises the following steps of firstly, processing an assembly; cleaning and drying; then, assembling according to a sequence; and finally, reliably welding by accurately controlling the welding position.
Description
Technical field
The present invention relates to a kind of bellows-welding assembly and production method thereof.
Background technique
Current bellows-welding assembly generally adopts corrugated stainless steel tubing and brass part soldering; Also there are bellows and part all to adopt stainless steel part and adopt the weldering of capacitance energy storage impulse seam, roll welding technique etc. simultaneously.Corrugated stainless steel tubing is from the brass part brazing mode because the fusing point of stainless steel and brass is inconsistent and both cold and hot convergent-divergent coefficients are different, and during welding, up-to-standard rate is large than weld leakage hidden danger in low and routine use; In addition all with stainless steel part and adopt capacitance energy storage impulse seam weldering or the modes such as roll welding exist weld strength low due to the restriction of technique itself, leakage hidden danger is arranged, cost is high, manufacturing efficiency is low.
Summary of the invention
Problem to be solved by this invention is to provide a kind of bellows-welding assembly, improves welding quality and manufacturing efficiency, reduces costs, good airproof performance, long service life, is convenient to promote the use of.Another problem to be solved of the present invention is also will provide a kind of production method of bellows-welding assembly in addition.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme: a kind of bellows-welding assembly, comprise lower valve rod, be sleeved on successively bellows and the interior valve gap on lower valve rod from top to bottom, described bellows comprises end interface and lower end interface, described lower valve rod top has the annular flange flange that radially outward stretches out, described internal valve tops has the axial protuberance stretched out towards the bellows direction, the upper end interface close-fitting of described bellows is sleeved on annular flange flange, and the lower end interface close-fitting of described bellows is sleeved on axial protuberance.
Improved, the end face of described upper end interface is concordant with the upper end-face edge of described annular flange flange, and the end face of described lower end interface is concordant with the lower edge of described axial protuberance.Be convenient to bellows is carried out to axially locating.
Improved, described bellows is by being welded to connect between lower valve rod and interior valve gap, close-fitting suit place in upper end interface and annular flange flange forms the first weld seam, between the end face of described the first weld seam and upper end interface, distance is 0.3～0.4mm, form the second weld seam at lower end interface with the close-fitting suit place of axial protuberance, between the end face of described the second weld seam and lower end interface, distance is 0.3～0.4mm.Position while welding preferably, be convenient to welding and prevent the residual corrosion weld seam of detergent, avoid the generation of revealing.
Improved, the top of described lower valve rod is provided with the tapped hole of connection for transmission parts.
Improved, the central axes of described lower valve rod, bellows, tapped hole and interior valve gap.Transmission is effective, avoids in transmission process occurring that assembly damages.
Improved, described lower valve rod and described internal valve cover be provided with prevent lower valve rod relative in the cooperating structure that rotates of valve gap.Prevent the bellows distortion.
Improved, be provided with the suit hole that installs lower valve rod in described interior valve gap, described cooperating structure comprises that being located at lower valve rod is arranged in the pin-and-hole on the part that is set with hole, be located at the position limit pin in pin-and-hole and be located at the restraining groove on the hole wall of suit hole, described restraining groove is the groove axially arranged along the suit hole.
Improved, the central axis of described pin-and-hole and position limit pin and the central axis of described lower valve rod intersect vertically.Good limit effect, and not fragile assembly.
This technical theme of production method for a kind of bellows-welding assembly, production method of the present invention comprises the steps: 1. lower valve rod to be processed as the lower valve rod that top has annular flange flange, and offer tapped hole on the top of lower valve rod, to offer pin-and-hole with interior valve gap suit place at lower valve rod; Interior valve gap is processed as to the interior valve gap with axial protuberance, and offers restraining groove in the suit hole of interior valve gap and lower valve rod; 2. adopt the ultrasound operation to be cleaned lower valve rod, bellows, interior valve gap and position limit pin, eliminate the oil stain and the dirt that adhere in Tutrning Process, and carry out drying; 3. lower valve rod, bellows, interior valve gap and position limit pin are assembled: in the pin-and-hole of first position limit pin being packed into, again bellows-sheathed is contained on lower valve rod to the upper end interface that makes bellows and the annular flange flange at lower valve rod top closely cooperates, then interior valve gap is set with on lower valve rod, make position limit pin and restraining groove corresponding matching good, and the axial protuberance of interior valve gap is inserted to the lower end interface of bellows; 4. after having assembled, take the top plan of lower valve rod and the plane of orientation of interior valve gap by the rotation positioning tool and fix as benchmark carrys out positioning and clamping, precisely control position while welding, upper end interface and the lower end interface of bellows welded.
Improved, the upper end interface of described bellows and lower end interface adopt laser bonding or self-melt welding.Can accurately control position while welding, upper end interface and the lower end interface of bellows welded.
Beneficial effect:
After adopting technique scheme, this invents a kind of bellows-welding assembly and production method can accurately be controlled position while welding, realize reliable welding, improve welding quality and manufacturing efficiency, reduce costs, good airproof performance, long service life, and be convenient to promote the use of.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
The structural representation that Fig. 1 is a kind of bellows-welding assembly of the present invention;
The enlarged view that Fig. 2 is I place in Fig. 1;
The sectional view that Fig. 3 is A-A place in Fig. 1.
Embodiment
Embodiment one:
As shown in Figure 1, Figure 2 and Figure 3, a kind of bellows-welding assembly, comprise lower valve rod 1, be sleeved on successively bellows 2 and the interior valve gap 3 on lower valve rod from top to bottom, described bellows comprises end interface 21 and lower end interface 22, described lower valve rod top has the annular flange flange 11 that radially outward stretches out, described internal valve tops has the axial protuberance 31 stretched out towards the bellows direction, the upper end interface close-fitting of described bellows is sleeved on annular flange flange, and the lower end interface close-fitting of described bellows is sleeved on axial protuberance.
The end face of described upper end interface is concordant with the upper end-face edge of described annular flange flange, the end face of described lower end interface is concordant with the lower edge of described axial protuberance, described bellows is by being welded to connect between lower valve rod and interior valve gap, close-fitting suit place in upper end interface and annular flange flange forms the first weld seam 12, between the end face of described the first weld seam and upper end interface, distance is 0.3～0.4mm, form the second weld seam 32 at lower end interface with the close-fitting suit place of axial protuberance, between the end face of described the second weld seam and lower end interface, distance is 0.3～0.4mm.The top of described lower valve rod is provided with the tapped hole 13 of connection for transmission parts.The central axes of described lower valve rod, bellows, tapped hole and interior valve gap.
Described lower valve rod and described internal valve cover be provided with prevent lower valve rod relative in the cooperating structure that rotates of valve gap.Be provided with the suit hole that installs lower valve rod in described interior valve gap, described cooperating structure comprises that being located at lower valve rod is arranged in the pin-and-hole 14 on the part that is set with hole, be located at the position limit pin 4 in pin-and-hole and be located at the restraining groove 33 on the hole wall of suit hole, described restraining groove is the groove axially arranged along the suit hole, and the central axis of described pin-and-hole and position limit pin and the central axis of described lower valve rod intersect vertically; Perhaps described cooperating structure comprises the fitting surface be located between lower valve rod and interior valve gap, and described fitting surface is plane or non-round surface.
Embodiment two:
The present embodiment provides a kind of production method for the production of the bellows-welding assembly in above-described embodiment, referring to figs. 1 through structure shown in 3, comprise the following steps: 1) at first lower valve rod 1 is processed as to the lower valve rod that top has annular flange flange 11, and offer tapped hole 13 on the top of lower valve rod, to offer pin-and-hole 14 with interior valve gap suit place at lower valve rod, and interior valve gap 3 is processed as to the interior valve gap with axial protuberance 31, and offers restraining groove 33 in the suit hole of interior valve gap and lower valve rod; 2) then adopt the ultrasound operation to be cleaned lower valve rod, bellows 2, interior valve gap and position limit pin 4 these four kinds of parts, eliminate the oil stain and the dirt that adhere in Tutrning Process, and carry out drying; 3) again lower valve rod, bellows, interior valve gap and position limit pin are assembled: first the position limit pin plug-in mounting is entered in pin-and-hole, again bellows-sheathed being contained on lower valve rod to the upper end interface 21 that makes bellows closely cooperates with the annular flange flange at lower valve rod top, then interior valve gap is sleeved on lower valve rod, make position limit pin and restraining groove corresponding matching good, and the axial protuberance of interior valve gap is inserted to the lower end interface 22 of bellows; 4) take the top plan 15 of lower valve rod and the plane of orientation 34 of interior valve gap by the rotation positioning tool after having assembled and fix as benchmark carrys out positioning and clamping, precisely control position while welding, upper end interface and the lower end interface of bellows welded.
The upper end interface of described bellows and lower end interface adopt laser bonding, set suitable speed and power on laser welding apparatus, adjust the position of laser beam, now can precisely control position while welding, the upper end interface of bellows and the close-fitting place of lower end interface are reliably welded; Perhaps the upper end interface of described bellows and lower end interface adopt the self-melt welding.
Except above preferred embodiment, the present invention also has other mode of execution, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (10)
1. a bellows-welding assembly, comprise lower valve rod (1), be sleeved on successively bellows (2) and the interior valve gap (3) on lower valve rod from top to bottom, described bellows comprises end interface (21) and lower end interface (22), it is characterized in that: described lower valve rod top has the annular flange flange (11) that radially outward stretches out, described internal valve tops has the axial protuberance (31) stretched out towards the bellows direction, the upper end interface close-fitting of described bellows is sleeved on the outer side wall of annular flange flange, and the lower end interface close-fitting of described bellows is sleeved on axial protuberance.
2. a kind of bellows-welding assembly according to claim 1, it is characterized in that: the end face of described upper end interface is concordant with the upper end-face edge of described annular flange flange, and the end face of described lower end interface is concordant with the lower edge of described axial protuberance.
3. a kind of bellows-welding assembly according to claim 2, it is characterized in that: described bellows is by being welded to connect between lower valve rod and interior valve gap, close-fitting suit place in upper end interface and annular flange flange forms the first weld seam (12), between the end face of described the first weld seam and upper end interface, distance is 0.3～0.4mm, form the second weld seam (32) at lower end interface with the close-fitting suit place of axial protuberance, between the end face of described the second weld seam and lower end interface, distance is 0.3～0.4mm.
4. a kind of bellows-welding assembly according to claim 3, it is characterized in that: the top of described lower valve rod is provided with the tapped hole (13) of connection for transmission parts.
5. a kind of bellows-welding assembly according to claim 4, is characterized in that: the central axes of described lower valve rod, bellows, tapped hole and interior valve gap.
6. according to the described a kind of bellows-welding assembly of claim 1 to 5 any one, it is characterized in that: described lower valve rod and described internal valve cover be provided with prevent lower valve rod relative in the cooperating structure that rotates of valve gap.
7. a kind of bellows-welding assembly according to claim 6, it is characterized in that: be provided with the suit hole that installs lower valve rod in described interior valve gap, described cooperating structure comprises the pin-and-hole (14) that is located on the part that lower valve rod is arranged in the suit hole, is located at the position limit pin (4) of pin-and-hole and is located at the restraining groove (33) on suit hole hole wall, the part that described position limit pin stretches out pin-and-hole matches with restraining groove, and described restraining groove is the groove axially arranged along the suit hole.
8. a kind of bellows-welding assembly according to claim 7, it is characterized in that: the central axis of described pin-and-hole and position limit pin and the central axis of described lower valve rod intersect vertically.
9. the production method of a bellows-welding assembly as described as claim 1 to 8 any one, comprise the steps:
1) lower valve rod is processed as to the lower valve rod that top has annular flange flange, and offers tapped hole on the top of lower valve rod, at lower valve rod, will offer pin-and-hole with interior valve gap suit place; Interior valve gap is processed as to the interior valve gap with axial protuberance, and offers restraining groove in the suit hole of interior valve gap and lower valve rod;
2) adopt the ultrasound operation to be cleaned lower valve rod, bellows, interior valve gap and position limit pin, eliminate the oil stain and the dirt that adhere in Tutrning Process, and carry out drying;
3) lower valve rod, bellows, interior valve gap and position limit pin are assembled: in the pin-and-hole of first position limit pin being packed into, the outer side wall that again bellows-sheathed is contained on lower valve rod to the annular flange flange at the upper end interface that makes bellows and lower valve rod top closely cooperates, then interior valve gap is set with on lower valve rod, make position limit pin and restraining groove corresponding matching good, and the axial protuberance of interior valve gap is inserted to the lower end interface of bellows;
4) after having assembled, take the top plan (15) of lower valve rod and the plane of orientation (34) of interior valve gap by the rotation positioning tool and fix as benchmark carrys out positioning and clamping, precisely control position while welding, upper end interface and the lower end interface of bellows welded.
10. the production method of a kind of bellows-welding assembly according to claim 9, is characterized in that: the upper end interface of described bellows and lower end interface employing laser bonding or self-melt welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210422651.0A CN102954283B (en) | 2012-10-29 | 2012-10-29 | Corrugated tube welding assembly and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210422651.0A CN102954283B (en) | 2012-10-29 | 2012-10-29 | Corrugated tube welding assembly and production method thereof |
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| CN102954283A CN102954283A (en) | 2013-03-06 |
| CN102954283B true CN102954283B (en) | 2014-01-08 |
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| CN103672191A (en) * | 2013-11-25 | 2014-03-26 | 江苏星河阀门有限公司 | Welding structure of metal bellow assembly for valve |
| CN103753172B (en) * | 2013-12-26 | 2016-03-09 | 沪东重机有限公司 | A kind of location of marine low speed diesel engine bellows and installation method |
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| CN105546146B (en) * | 2016-03-01 | 2018-01-30 | 江苏神通阀门股份有限公司 | A kind of bellows ball valve and its assembly method |
| CN105546206B (en) * | 2016-03-01 | 2018-01-26 | 江苏神通阀门股份有限公司 | A kind of bellows ball valve |
| CN105626890B (en) * | 2016-03-01 | 2018-01-30 | 江苏神通阀门股份有限公司 | A kind of assembly method of bellows ball valve |
| CN108413031A (en) * | 2018-03-23 | 2018-08-17 | 湖北大禹汉光真空电器有限公司 | A kind of sealing technology of bellows |
| CN113523636B (en) * | 2021-08-09 | 2022-05-31 | 江苏神通阀门股份有限公司 | Valve welding method |
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Denomination of invention: The invention relates to a bellows welding assembly and a production method thereof Effective date of registration: 20211220 Granted publication date: 20140108 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang deai Intelligent Control Technology Co.,Ltd. Registration number: Y2021980015397 |
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Date of cancellation: 20230724 Granted publication date: 20140108 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang deai Intelligent Control Technology Co.,Ltd. Registration number: Y2021980015397 |