CN1594955A - Hot melt fastening type composite pipe fittings and method for manufacturing the same - Google Patents
Hot melt fastening type composite pipe fittings and method for manufacturing the same Download PDFInfo
- Publication number
- CN1594955A CN1594955A CN 200410012377 CN200410012377A CN1594955A CN 1594955 A CN1594955 A CN 1594955A CN 200410012377 CN200410012377 CN 200410012377 CN 200410012377 A CN200410012377 A CN 200410012377A CN 1594955 A CN1594955 A CN 1594955A
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- China
- Prior art keywords
- pipe fitting
- composite pipe
- hot melt
- type composite
- inner plastic
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- 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.)
- Granted
Links
- 239000012943 hotmelt Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims description 60
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000004033 plastic Substances 0.000 claims abstract description 56
- 229920003023 plastic Polymers 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 5
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 238000010137 moulding (plastic) Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000002991 molded plastic Substances 0.000 abstract description 2
- 230000003340 mental effect Effects 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004023 plastic welding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
This invention discloses a hot-melt locking multiple pipeline and its facture. It includes: the metallic outer shell and the plastic interior layer that is jointed together with the outer shell, at each end of the pipeline between the outer shell and the plastic layer is the annular groove and its width matches with the wall thickness of the complex pipeline, the exterior wall of the groove is the metallic shell and its interior wall is the plastic layer, in the interior wall of the groove set the reinforcing ring, at each end of the mental shell is the annular hog, at each end of the interior wall of the plastic layer is the bushing ring. Use a mental board to make the outer shell, and then put the molded plastic layer into the shell and joint together. When this invention is connected with the complex pipelines, the plastics is hot melt, the metals are locking linked. It has well sealing and high intention of connection, and its facture solves the problem that the clearance between the interior layer and the outer shell is too large because of the constriction of the molding plastics.
Description
Technical field
The present invention relates to a kind of pipe joint, particularly relate to the manufacture method of a kind of composite pipe fitting and this composite pipe fitting.
Background technique
Existing pipeline connection technology is threaded and is connected two kinds with non-threaded, and the pipe fitting of pure metal material generally adopts threaded connector to connect, and its deficiency is the manufacture cost height, installs, dismantles complicated; Plastic tube, pipe fitting generally adopt gluing connecing with hot melt to be connected (being Plastic Welding), be characterized in easy and simple to handle, connect combine between reliable, plastic tube and the pipe fitting closely non-leakage.What composite pipe (as plastic stainless-steel composite-tubes, plastic-aluminum pipe) mostly adopted is screw thread " FERRULETYPE " link, by precession nut compresses seal and lock jump ring and reach the mechanical connection manner that not only seals but also connect.Advantage is: on minor caliber pipe be a kind of Placement of maturation, safe and reliable, construction is fast simple.Shortcoming is: the jump ring coupling mechanism force can't be born the pressure requirement of φ 63 above specification pipe-line systems, so be not suitable for big specification pipe-line system; When being subjected to radial load, pipeline easily leaks; The bonding strength of hot melt adhesive decays behind the composite pipe hot melt adhesive chance water, and composite pipe meeting layering causes in the inner plastic and contracts.The another kind of Placement of composite pipe is to adopt melt viscosity formula composite pipe fitting, though adopt the internal layer hot melt to connect, the connection between its stainless steel is by the gluing connection of macromolecule glue, and macromolecule glue is met heat back bonding strength and reduced, and influences bonding strength behind the gum softening.
The manufacture method of melt viscosity formula composite pipe fitting is to make the pipe fitting shell earlier, is with shell injection moulding inner plastic then.Because the contractibility of plastics is bigger, thus promptly can cause between metal shell and the inner plastic gap big, thus there is the low shortcoming of bearing capacity.
Summary of the invention
Purpose of the present invention is intended to overcome above-mentioned shortcoming, and a kind of good airproof performance, hot melt clamp-press type composite pipe fitting that join strength is high are provided.
Another object of the present invention provides and a kind ofly can make the manufacture method that the gap is little, pressure-bearing is high between hot melt clamp-press type composite pipe fitting metal shell and the inner plastic.
For reaching above-mentioned purpose, the present invention adopts following solution: comprise metal shell and the inner plastic that is connected as a single entity with metal shell, it is characterized in that: between every end metal shell of this pipe fitting and inner plastic, all have annular groove, the width of annular groove and the wall thickness of composite pipe are complementary, the outer side wall of annular groove is a metal shell, madial wall is that inner plastic is hot melt female part position, links to each other with the tubing inner plastic during installation, on the wall of the inner end at socket joint position stiffening ring is set.
Above-mentioned hot melt clamp-press type composite pipe fitting is characterized in that: described inner plastic adopts nano-class antibacterial master batch and ordinary hot thermoplastic plastic to make.
Above-mentioned hot melt clamp-press type composite pipe fitting, it is characterized in that: every end of described metal shell all is set to the stiffening rib of annular protrusion.When pipe fitting was connected with tubing, the seal ring of can packing in the stiffening rib to increase the sealing between them, had also improved the rigidity of pipe fitting simultaneously.
Above-mentioned hot melt clamp-press type composite pipe fitting is characterized in that: the every end of the inwall of described inner plastic all is provided with lining ring.
Above-mentioned hot melt clamp-press type composite pipe fitting is characterized in that: described pipe fitting has the fixedly connected silk of end head.The purpose that the silk head is set is to be convenient to this pipe fitting be connected with the first-class parts of the fire hose.
Above-mentioned hot melt clamp-press type composite pipe fitting is characterized in that: be provided with rubber seal between the connecting end of described silk head and pipe fitting.
The method of making above-mentioned hot melt clamp-press type composite pipe fitting is:
1, with the inner plastic molding and forming;
2, metal plate is struck out the curved surface that matches with a certain side of inner plastic;
3, the inner plastic of molding and forming is packed in the curved surface that metal plate makes, embrace then that circle coats, welding;
4, make the stiffening rib moulding of pipe fitting end annular protrusion.
Above-mentioned hot melt clamp-press type composite pipe fitting manufacture method is characterized in that: when composite pipe fitting was threeway, step 2 was the medial head with the stretched metal shell of metal plate, the side cut shaping; Step 4 is made into annular protrusion for adopting the system of rammer or spinning process with pipe fitting end.
Above-mentioned hot melt clamp-press type composite pipe fitting manufacture method is characterized in that: when composite pipe fitting was elbow, step 2 was to make the intermediate portion of elbow shell of metal plate, and intermediate portion forms the U-shaped cross section through blanking, punching press; Step 4 is the end cover of annular protrusion for making an end earlier, the end cover that will make then and the end welding of elbow shell intermediate portion.
Above-mentioned hot melt clamp-press type composite pipe fitting manufacture method is characterized in that: when composite pipe fitting when straight-through, metal circular tube is upset make the shell shape that the end is an annular protrusion earlier, then the inner plastic of molding and forming is in advance press-fited wherein.
Using method of the present invention is: at first adopt special-purpose hot melt instrument that the inner plastic of composite pipe and the socket joint position in this composite pipe fitting inner plastic are heated to set point of temperature simultaneously, then the tubing endoporus is inserted at the socket joint position of pipe fitting rapidly, both are welded together, after the cooling of position to be welded, block pressure at the pipe fitting shell near the stiffening rib place with the personality card pressing tongs again, pipe fitting metal shell and tubing metal outer are out of shape and are entrenched togather.
Compared with prior art, the present invention has following advantage:
1, constitutes by metal shell and inner plastic owing to the present invention, all have annular groove at its every end, when tubing is connected with this pipe fitting, tubing is inserted in the annular groove of this pipe fitting, the employing plastics are connected with plastic hot melt, metal is pressed with metal card and is connected, and have improved the reliability that pipeline connects.It is one of good sealing performance Placement of generally acknowledging at present that hot melten type between the inner plastic connects, and hot melten type connects can guarantee that pipeline has good sealing property, and what overcome other Placements drips, leaks phenomenon; Metal outer adopts multiple spot card pressure mode to connect, and has guaranteed join strength, has so not only guaranteed the reliability that connects but also has strengthened the rigidity that connects.So the present invention has good airproof performance, advantage that join strength is high.
2, the present invention all connects into an integral body to the metal outer of whole pipeline and inner plastic when being connected with composite pipe, the delamination that contracts in having avoided thoroughly that the multiple tube double layer material causes because of expanding with heat and contract with cold has really been realized the compound connection of composite material.
3, because the present invention is provided with stiffening ring on the madial wall of annular groove, strengthened the rigidity of tubing end, the end that so just can guarantee metal shell composite pipe after card is pressed is difficult for undergauge, has improved the fastness that pipe part connects, and increases tensile strength.
4, the purpose of lining ring is set on the inwall of inner plastic is that inner plastic subsides when preventing hot melt in the present invention.
5, material of main part of the present invention is plastics, and skin is that metallic walls is thin, and cost is low.
6, external diameter of the present invention is slightly larger than the external diameter of composite pipe, when pipe with after it is connected, can keep roughly suitable external diameter, guaranteed that this pipe fitting outward appearance is clean and tidy, attractive in appearance.
7, because the manufacture method that the present invention adopts is first injection-moulded plastic internal layer, in the metal shell that the metal plate of then inner plastic being packed into is made, coat, be welded through embracing circle, solved the injection moulding of band shell and caused the problem of excesssive gap between internal layer and the shell, so the present invention has pressure-bearing height, advantage that cost is low because of plastic shrink.
Description of drawings
The structural representation of Fig. 1, the embodiment of the invention 1.
The structural representation that Fig. 2, the embodiment of the invention 1 are connected with composite pipe.
The structural representation of Fig. 3, the embodiment of the invention 2.
Among the above-mentioned figure: 1-annular groove 2-metal shell 3-stiffening ring
4-inner plastic 5-lining ring 6-annular protrusion
A 7-composite pipe 8-silk 9-rubber seal
Embodiment
Embodiment 1: as shown in Figure 1, present embodiment is straight-through composite pipe fitting, comprise metal shell 2 and the inner plastic 4 that is connected as a single entity with metal shell 2, the two ends of metal shell 2 are set to the projection 6 of annular, inner plastic 4 adopts nano-class antibacterial master batch and ordinary hot thermoplastic plastic to make, its inwall two ends are provided with metal lining ring 5, between the two ends of this pipe fitting metal shell 2 and inner plastic 4, have annular groove 1, the wall thickness of the width of annular groove 1 and composite pipe 7 is complementary, the outer side wall of annular groove 1 is a metal shell 2, madial wall is an inner plastic 4, and promptly hot melt female part position is provided with stiffening ring 3 on the wall of the inner end at socket joint position.
As shown in Figure 2, the present invention is connected with composite pipe 7, at first the inner plastic of composite pipe 7 and the inner plastic 4 at this composite pipe fitting annular groove position are heated to set point of temperature simultaneously, insert composite pipe 7 in the annular groove 1 of this composite pipe fitting rapidly then, both are welded together, after the cooling of position to be welded, on the outer wall A-A position of annular groove 1, block pressure with the personality card pressing tongs again, pipe fitting metal shell 2 is entrenched togather with the distortion of tubing metal outer.When pipe fitting was connected with tubing, the seal ring of can packing in the annular protrusion 6 was to increase the sealing between them.
The manufacture method of present embodiment is: the system of earlier metal circular tube being upset or be spun into the shell shape that the end is the annular protrusion stiffening rib, then the inner plastic of molding and forming is in advance press-fited wherein.
Owing to added the nano-class antibacterial material of good stability in the inner plastic 4 of this composite pipe fitting, but thereby the bacterium in the water had growth and a killing action that suppresses bacterium, the sanitation and hygiene that therefore can keep water quality with this product, can be applicable to the piped direct-drinking water engineering of quality classification water supply and the water supply occasion that sanitation performance is had relatively high expectations, satisfy the life requirement that people improve constantly.
Embodiment 2: as shown in Figure 3, one end of this composite pipe fitting has annular groove 1, and the fixedly connected silk of the other end 8 is provided with rubber seal 9 between the connecting end of silk 8 and pipe fitting, plastics and metal shell interlayer seepage in case the fluid stopping body medium is flowed through, all the other structures are with embodiment 1.The purpose that silk 8 is set is to be convenient to this pipe fitting be connected with the first-class parts of the fire hose.
Embodiment 3: present embodiment is the threeway composite pipe fitting, and except that increasing a pipeline connecting end, all the other structures are with embodiment 1.
The manufacture method of present embodiment is: elder generation is with the medial head of the stretched metal shell of metal plate, after the side cut shaping, again the inner plastic of molding and forming is in advance packed into wherein, coat, weld, adopt the system technology of upsetting that pipe fitting end is made into annular protrusion at last through embracing circle.
Embodiment 4: present embodiment is the elbow composite pipe fitting, and except that being shaped as elbow, all the other structures are with embodiment 1.
The manufacture method of present embodiment is: making an end earlier is the end cover of annular protrusion, make the intermediate portion of elbow shell then of metal plate, intermediate portion forms the U-shaped cross section through blanking, punching press, again the inner plastic of molding and forming is in advance packed into wherein, warp is embraced circle coating, the middle slit of welding internal diameter, at last the ready made end cover and the end of elbow shell intermediate portion are welded.
Claims (12)
1, a kind of hot melt clamp-press type composite pipe fitting, comprise metal shell and the inner plastic that is connected as a single entity with metal shell, it is characterized in that: between every end metal shell of this pipe fitting and inner plastic, all have annular groove, the width of annular groove and the wall thickness of composite pipe are complementary, the outer side wall of annular groove is a metal shell, madial wall is an inner plastic, on the madial wall of the inner end of annular groove stiffening ring is set.
2, hot melt clamp-press type composite pipe fitting according to claim 1 is characterized in that: described inner plastic adopts nano-class antibacterial master batch and ordinary hot thermoplastic plastic to make.
3, hot melt clamp-press type composite pipe fitting according to claim 1 and 2 is characterized in that: every end of described metal shell all is set to the projection of annular.
4, hot melt clamp-press type composite pipe fitting according to claim 1 and 2, it is characterized in that: the every end of the inwall of described inner plastic all is provided with lining ring.
5, hot melt clamp-press type composite pipe fitting according to claim 1 and 2 is characterized in that: described pipe fitting has the fixedly connected silk of end head.
6, hot melt clamp-press type composite pipe fitting according to claim 3, it is characterized in that: the every end of the inwall of described inner plastic all is provided with lining ring.
7, hot melt clamp-press type composite pipe fitting according to claim 3 is characterized in that: described pipe fitting has the fixedly connected silk of end head.
8, hot melt clamp-press type composite pipe fitting according to claim 5 is characterized in that: be provided with rubber seal between the connecting end of described silk head and pipe fitting.
9, make the method for hot melt clamp-press type composite pipe fitting according to claim 1, it is characterized in that: it comprises the steps: that (1) is with the inner plastic molding and forming; (2) metal plate is struck out the curved surface that matches with a certain side of inner plastic; (3) inner plastic of molding and forming is packed in the curved surface that metal plate makes, embrace then that circle coats, welding; (4) the stiffening rib moulding of making pipe fitting end annular protrusion.
10, hot melt clamp-press type composite pipe fitting manufacture method according to claim 9 is characterized in that: when composite pipe fitting was threeway, step (2) was the medial head with the stretched metal shell of metal plate, the side cut shaping; Step (4) is made into annular protrusion for adopting the system of rammer or spinning process with pipe fitting end.
11, hot melt clamp-press type composite pipe fitting manufacture method according to claim 9 is characterized in that: when composite pipe fitting was elbow, step (2) was to make the intermediate portion of elbow shell of metal plate, and intermediate portion forms the U-shaped cross section through blanking, punching press; Step (4) is the end cover of annular protrusion for making an end earlier, the end cover that will make then and the end welding of elbow shell intermediate portion.
12, hot melt clamp-press type composite pipe fitting manufacture method according to claim 9, it is characterized in that: when composite pipe fitting when straight-through, earlier metal circular tube is upset and make the shell shape that the end is an annular protrusion, then the inner plastic of molding and forming is in advance press-fited wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012377 CN1281887C (en) | 2004-06-30 | 2004-06-30 | Hot melt fastening type composite pipe fittings and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012377 CN1281887C (en) | 2004-06-30 | 2004-06-30 | Hot melt fastening type composite pipe fittings and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594955A true CN1594955A (en) | 2005-03-16 |
| CN1281887C CN1281887C (en) | 2006-10-25 |
Family
ID=34662751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012377 Expired - Fee Related CN1281887C (en) | 2004-06-30 | 2004-06-30 | Hot melt fastening type composite pipe fittings and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1281887C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007147298A1 (en) * | 2006-06-15 | 2007-12-27 | Foshan Rifeng Enterprise Co.Ltd. | A hot-melt connecting socket pipe fitting and the connecting method of the same |
| CN106321997A (en) * | 2016-08-26 | 2017-01-11 | 闫风明 | Nanometer antibacterial stainless steel plastic inner seal clamping and pressing type composite pipe fitting and preparation process thereof |
-
2004
- 2004-06-30 CN CN 200410012377 patent/CN1281887C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007147298A1 (en) * | 2006-06-15 | 2007-12-27 | Foshan Rifeng Enterprise Co.Ltd. | A hot-melt connecting socket pipe fitting and the connecting method of the same |
| CN106321997A (en) * | 2016-08-26 | 2017-01-11 | 闫风明 | Nanometer antibacterial stainless steel plastic inner seal clamping and pressing type composite pipe fitting and preparation process thereof |
| CN106321997B (en) * | 2016-08-26 | 2018-10-19 | 闫风明 | Nano-antibacterial plastic stainless-steel interior sealing clamp-press type composite pipe and its preparation process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281887C (en) | 2006-10-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 Termination date: 20130630 |