CN100453982C - Method for manufacturing plastic vertical water meter cases - Google Patents
Method for manufacturing plastic vertical water meter cases Download PDFInfo
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- CN100453982C CN100453982C CNB2007100508593A CN200710050859A CN100453982C CN 100453982 C CN100453982 C CN 100453982C CN B2007100508593 A CNB2007100508593 A CN B2007100508593A CN 200710050859 A CN200710050859 A CN 200710050859A CN 100453982 C CN100453982 C CN 100453982C
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Abstract
The invention relates to a manufacturing method of plastic water meter shell, in particular to a manufacturing method of plastic vertical water meter shell. The manufacturing method is characterized in being conducted by the following procedures: firstly, make a plurality of chip embedded lumps and outlet and inlet water core axle jointed into the inner core structure of the water meter and then inserted on the swallow-tail spline shaft; in the following, make the inlet water guide embedded lump and the outlet guide embedded lump connected with one end of the water core axle by a bolt to form integrated core inner module, then make the integrated core inner module installed in the cavity of module, the module is opened after mode locking, injection molding and cool molding by an injection machine; finally, taking out the multiple dissolved core embedded lumps, inlet and outlet water core axle, water inlet guide embedded lumps and water outlet guide embedded block to achieve plastic vertical water meter shell. The manufacture procedure of the manufacture method is simple and easy to practice, which ensures the service life of plastic vertical water meter and solves the difficult technical problem that the one-time injection molding of the plastic vertical water meter can't demould that the technical personnel in the filed are unable to solve for a long time.
Description
Technical field
The present invention relates to a kind of manufacture method of plastic water meter shell, especially a kind of manufacture method of plastic vertical water meter cases.
Background technology
Existing water meter casing manufacturing method is the manufacture method of metal water watchcase, a kind of water meter shell and manufacture method thereof are disclosed as Chinese invention patent ZL00125206.2 number, this method is with blind nut body inside and outside the cold extrusion shaped one-tenth of stainless steel sheet material, its port part that is connected is shaped on internal and external screw thread, be connected oral area with water pipe and be welded with externally threaded item, outer blind nut body inside surface is fixed with location-plate, and outside surface has the counting display aperture.It has material saving, quality height, is difficult for leakage, the high advantage of production efficiency, suits to apply on the water meter industry.And for example the Chinese invention patent application discloses a kind of water meter shell and manufacture method thereof for No. 200610049920.8, this water meter shell comprises housing (1) and is positioned at flange on this housing (1), it is characterized in that the cylindrical body that described housing (1) is welded for steel plate, its surface forms sealing wire (4), aforesaid flange comprises gauge outfit flange (3) and terminal port flange (2), aforesaid gauge outfit flange (3) is fixed in the surperficial centre position of welding aforementioned housing (1), and aforesaid terminal port flange (2) is fixedly welded on the port of aforementioned housing (1); This invention also discloses the manufacture method of this water meter shell.Compared with the prior art, it is simple to have processing technology, cheap advantage, and being particularly suitable for diameter is the above especially big water meter of 400mm.Because non-ferrous metal and ferrous material go up at double in recent years; market material supplies anxiety, the water meter of production is because of relating to huge numbers of families' water metering, and the goods price can't raise; from economizing on resources, protect environment to consider, plastic vertical water meter begins to replace in a large number the metal vertical water meter.The manufacture method of the manufacture method of plastic water meter and metal water meter can not be general, reason is that plastic water meter shell is limited to quite difficulty of the plastic manufacturing process demoulding, particularly the modeling characteristic of plastic vertical water meter cases is that inner chamber is big, oral area is little, and concavo-convex geometric configuration face is more, and water inlet water outlet pore is vertical, it is two ones from the middle part compartment on the vertical pipeline, two section faces of honeycomb duct of the taper of form upper water-out, intaking down, complex structure, goods demoulding difficulty are colleague's research for many years always, explore problem.In order to solve the release problems of plastic water meter shell, those skilled in the art have carried out sizable effort, on the horizontal water meter shell of plastics releasing process, obtained certain progress, but fail to find solution plastic vertical water meter cases injection moulding release problems, allow the manufacturing of plastic vertical water meter cases be in for a long time that technology is numerous and diverse, work efficiency low and manufacturing process's post-processed trouble or the like situation, some producer adopts amalgamation plastic water meter casing tech to produce and bring the problem of amalgamation position insufficient strength, has directly influenced the serviceable life of plastic vertical water meter cases.Therefore, be badly in need of providing a kind of manufacture method of plastic vertical water meter cases.
Summary of the invention
The purpose of this invention is to provide that a kind of manufacturing course is simple, the manufacture method of a kind of plastic vertical water meter cases of guaranteeing plastic vertical water meter cases serviceable life.
The manufacture method of a kind of plastic vertical water meter cases of the present invention, it is characterized in that carrying out according to following steps: a plurality of cores are inserted in elder generation and the Inlet and outlet water mandrel pieces together core sand moulding in the water meter, the core of core sand moulding is inserted and the Inlet and outlet water mandrel inserts on the dovetail splined shaft piecing together in the water meter again, allow the water inlet water conservancy diversion insert then again and the water outlet water conservancy diversion is inserted and Inlet and outlet water mandrel one end is bolted to connection and forms monolithic devices in-core mould, and then with the monolithic devices in-core mould mold cavity of packing into, through injection moulding machine mode-locking, injection moulding, opening mold obtains containing the plastic vertical water meter cases of monolithic devices in-core mould behind the cooling and shaping, at this moment, extract the dovetail splined shaft out, allow dovetail splined shaft and the core that pieces together core sand moulding in the water meter insert and the disengaging of Inlet and outlet water mandrel, decompose monolithic devices in-core mould, remove bolt then and insert and disengagings of inserting of water outlet water conservancy diversion by Inlet and outlet water mandrel and water inlet water conservancy diversion, a plurality of cores that take out at last after the decomposition are inserted, the Inlet and outlet water mandrel, the water inlet water conservancy diversion is inserted and the water outlet water conservancy diversion is inserted obtains plastic vertical water meter cases.
A plurality of cores described in the present invention are inserted and are meant that promptly it is more than three or three that core is inserted, piece together core sand moulding in the water meter after being incorporated into the water outlet mandrel, so that during the later stage injection moulding demoulding and the dovetail splined shaft break away from, allow it be scattered in the plastic water meter shell of injection mo(u)lding, make things convenient for the staff to take out, the many more easy more separation of the quantity that described in theory core is inserted make post-processed all the more convenient.Preferred plan constitutes core sand moulding in the water meter for after using nine cores to insert to be incorporated into the water outlet mandrel among the present invention.Allow the water inlet water conservancy diversion insert described in the present invention and the water outlet water conservancy diversion is inserted and Inlet and outlet water mandrel one end is bolted to connection and forms monolithic devices in-core mould, be meant promptly that after a last step is finished (core of core sand moulding is inserted and the Inlet and outlet water mandrel inserts on the dovetail splined shaft piecing together in the water meter) advance the assembly unit that the water water conservancy diversion is inserted and the water outlet water conservancy diversion is inserted on its basis and constitute monolithic devices in-core mould at last, Inlet and outlet water mandrel one end can have through hole, allowing bolt penetrate through hole inserts itself and water inlet water conservancy diversion and the water outlet water conservancy diversion is inserted to twist and is integral admittedly, certainly, also can allow Inlet and outlet water mandrel one end offer blind hole, allow bolt penetrate through hole and itself and water inlet water conservancy diversion are inserted and the water outlet water conservancy diversion is inserted to twist and is integral admittedly.Injection machine described in the present invention can adopt existing commercially available prod, as: victory source vertical injection molding machine or horizontal injection press that east, Chongqing molding machine tool company limited produces; PT80B type, PT130B type, PT160B type, PT200B type, PT250B type, PT300 type, PT350 type or PT450 type injection machine that Longhua Zhen Qing Hu village, Baoan District, Shenzhen mechanical stiffness new and high technology industry park mechanical stiffness group produces or the like.Dovetail spline on the dovetail splined shaft described in the present invention promptly is the normally used dovetail spline of mechanical field.The mold cavity of described in the present invention monolithic devices in-core mould being packed into promptly is meant the monolithic devices in-core mould existing dies cavity of making vertical plastic water meter shell external form of packing into, allows the space between itself and the mould can obtain the vertical plastic water meter case after the injection machine injection moulding.
The mentality of designing of the inventive method is: if monolithic devices in-core mould is considered in design is can't the demoulding, so adopt that a plurality of cores are inserted, the Inlet and outlet water mandrel, the water inlet water conservancy diversion inserts and the water outlet water conservancy diversion is inserted, connect in conjunction with the dovetail splined shaft, form monolithic devices in-core mould, solve the technical barrier that an injection moulding of the unsolved plastic vertical water meter cases body of those skilled in the art for a long time can't the demoulding.After combination finished, the monolithic devices in-core mould mold cavity of packing into through injection moulding machine mode-locking, (saw attached list 1) behind injection moulding, the cooling and shaping, and the dovetail splined shaft is extracted in die sinking out, took out goods.At this moment core is inserted and is scattered naturally except that two of water conservancy diversion are inserted in the goods inner chamber, and the remaining water outlet of water inlet up and down taper water conservancy diversion mould is inserted, the water conservancy diversion disengagement of inserting behind the bolt in turning on the runner mandrel, and two insert falls into the goods inner chamber.At this moment extract the Inlet and outlet water mandrel, pick in the goods all die inserts and finish production of articles, producing the plastic vertical water meter cases that obtains after finishing is the whole water meter shell of an injection moulding, has the characteristics of the high long service life of intensity.The dovetail splined shaft connection core internal molds of inserting of piecing together can be many covers more, and second mold of packing into behind the taking-up goods is produced, and like this, has both solved the problem of vertical water meter demoulding difficulty, can produce incessantly again.
Subordinate list 1: injection machine processing conditions
The mentality of designing of the inventive method is also considered to making things convenient for the water supply department management and tabling look-up conveniently, plastic vertical water meter is installed in the open air, be subjected to external environment and climate effect big, country uses water meter management and belongs to strong inspection scope, tenure of use, regulation was answered 8 years, and we design quality of item and use more than 10 years.Consider that plastic vertical water meter is in pressured state after installation is come into operation, must be safe and reliable intensity to its material, should enclose that tenure of use, regulation was answered 8 years, we design quality of item and use more than 10 years.Considering that plastic vertical water meter is in pressured state after installation is come into operation, must be that safe and reliable intensity to its material, stress, creep all are the scopes of making strict assessment.Raw-material employing is preferably carried out modification to polyamide (nylon 6) and is strengthened through several times test repeatedly, filters out the enhancing nylon 6-30 of best materials used prescription.(seeing attached list 2)
Subordinate list 2: best materials used strengthens nylon 6-30 test result
| Performance | Test condition | Test result |
| Pulling strengrth | 10mm/min | 155MPa |
| Length growth rate | 10mm/min | 3.5％ |
| Bending strength | 2mm/min | 230MPa |
| Bending modulus | 2mm/min | 1800MPa |
| The semi-girder notched Izod impact strength | 3.2mm，23℃ | 185J/m |
| Rockwell's hardness | R-Scale | 120 |
| Heat distortion temperature | 0.45MPa，6.4mm | 220℃ |
| Proportion | 23℃ | 1.36g/cm 3 |
| Glass fiber content | - | 30％ |
| Shrinkage factor | 23℃ | 0.3％～0.9％ |
| Water-intake rate | 23℃，24hr， | 0.8％ |
After enhancing nylon 6-30 production of articles went out, annealed elimination internal stress was handled, and boils 3～4 hours with salt (2%) in 100 kilograms of boiling water, has satisfied the requirement of plastic water meter materials used.
Compared with the aforementioned existing similar products, the manufacture method manufacturing course of a kind of plastic vertical water meter cases of the present invention simple, guarantee plastic vertical water meter cases serviceable life and solve the technical barrier that an injection moulding of the unsolved plastic vertical water meter cases body of those skilled in the art for a long time can't the demoulding.
Content of the present invention further illustrates with the following Examples, but content of the present invention is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is an embodiment method SMIS insert structure synoptic diagram.
Fig. 2 is the stereographic map of embodiment method SMIS insert structure.
Fig. 3 is the front view that the water inlet water conservancy diversion is inserted in the embodiment method.
Fig. 4 is the stereographic map that the water outlet water conservancy diversion is inserted in the embodiment method.
Fig. 5 is the front view of Inlet and outlet water mandrel in the embodiment method.
Fig. 6 is the stereographic map of Inlet and outlet water mandrel in the embodiment method.
Fig. 7 be in the embodiment method water inlet water conservancy diversion insert, the water outlet water conservancy diversion is inserted with the amalgamation of Inlet and outlet water mandrel after structural representation.
To be that nine cores are inserted in the method for embodiment, the water water conservancy diversion is inserted, the water outlet water conservancy diversion is inserted piece together the structural representation of monolithic devices in-core mould to Fig. 8 with the Inlet and outlet water mandrel.
Fig. 9 is the plastic vertical water meter cases front view that contains monolithic devices in-core mould in the embodiment method.
Figure 10 is the plastic vertical water meter cases front view that removes in the embodiment method behind the monolithic devices in-core mould.
Figure 11 is the plastic vertical water meter cases structural representation that removes in the embodiment method behind the monolithic devices in-core mould.
Embodiment
Shown in Fig. 1～11, the manufacture method of a kind of plastic vertical water meter cases described in the present embodiment, it is characterized in that carrying out according to following steps: earlier a plurality of cores are inserted 1 and Inlet and outlet water mandrel 2 piece together core sand moulding in the water meter, again piece together in the water meter core of core sand moulding insert 1 and Inlet and outlet water mandrel 2 insert on the dovetail splined shafts, allow again then the water inlet water conservancy diversion insert 3 and the water outlet water conservancy diversion insert and 4 be bolted to connection with Inlet and outlet water mandrel 2 one ends and form monolithic devices in-core mould, and then with the monolithic devices in-core mould mold cavity of packing into, through injection moulding machine mode-locking, injection moulding, opening mold obtains containing the plastic vertical water meter cases 5 of monolithic devices in-core mould behind the cooling and shaping, at this moment, extract the dovetail splined shaft out, allow the dovetail splined shaft with piece together in the water meter core of core sand moulding insert 1 and Inlet and outlet water mandrel 2 break away from, decompose monolithic devices in-core mould, remove then bolt by Inlet and outlet water mandrel 2 and water inlet water conservancy diversion insert 3 and the water outlet water conservancy diversion insert and 4 break away from, a plurality of cores that take out after decomposing insert 1 at last, Inlet and outlet water mandrel 2, the water inlet water conservancy diversion insert 3 and the water outlet water conservancy diversion insert and 4 obtain plastic vertical water meter cases 6.
A plurality of cores described in the present embodiment insert 1 and Inlet and outlet water mandrel 2 piece together core sand moulding in the water meter, be to use nine to piece together the cores 1 and Inlet and outlet water mandrel 2 of inserting and constitute core sand moulding in the water meters.The mandrel of Inlet and outlet water described in the present embodiment one end has through hole 7, allow bolt penetrate through hole 7 make into the water water conservancy diversion insert 3 and the water outlet water conservancy diversion insert and 4 twist with it and to be integral admittedly.The water conservancy diversion of water inlet described in the present embodiment insert 3 and the water outlet water conservancy diversion insert and 4 adopt the taper water conservancy diversion of same moulding to insert.The victory source vertical injection molding machine that injection machine described in the present embodiment adopts east, Chongqing molding machine tool company limited to produce.The injection machine processing conditions is referring to subordinate list 1 in the present embodiment.The enhancing nylon 6-30 that employed plastic material adopts in the present embodiment method, this testing of materials result is referring to subordinate list 2.
Claims (1)
1, a kind of manufacture method of plastic vertical water meter cases, it is characterized in that carrying out according to following steps: a plurality of cores are inserted in elder generation and the Inlet and outlet water mandrel pieces together core sand moulding in the water meter, the core of core sand moulding is inserted and the Inlet and outlet water mandrel inserts on the dovetail splined shaft piecing together in the water meter again, allow the water inlet water conservancy diversion insert then again and the water outlet water conservancy diversion is inserted and Inlet and outlet water mandrel one end is bolted to connection and forms monolithic devices in-core mould, and then with the monolithic devices in-core mould mold cavity of packing into, through injection moulding machine mode-locking, injection moulding, opening mold obtains containing the plastic vertical water meter cases of monolithic devices in-core mould behind the cooling and shaping, at this moment, extract the dovetail splined shaft out, allow dovetail splined shaft and the core that pieces together core sand moulding in the water meter insert and the disengaging of Inlet and outlet water mandrel, decompose monolithic devices in-core mould, remove bolt then and insert and disengagings of inserting of water outlet water conservancy diversion by Inlet and outlet water mandrel and water inlet water conservancy diversion, a plurality of cores that take out at last after the decomposition are inserted, the Inlet and outlet water mandrel, the water inlet water conservancy diversion is inserted and the water outlet water conservancy diversion is inserted obtains plastic vertical water meter cases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100508593A CN100453982C (en) | 2007-12-17 | 2007-12-17 | Method for manufacturing plastic vertical water meter cases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100508593A CN100453982C (en) | 2007-12-17 | 2007-12-17 | Method for manufacturing plastic vertical water meter cases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101196417A CN101196417A (en) | 2008-06-11 |
| CN100453982C true CN100453982C (en) | 2009-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100508593A Expired - Fee Related CN100453982C (en) | 2007-12-17 | 2007-12-17 | Method for manufacturing plastic vertical water meter cases |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988843B (en) * | 2009-07-31 | 2012-06-27 | 陈信达 | Water meter |
| CN112339211B (en) * | 2020-11-10 | 2022-12-09 | 湖北三江航天江北机械工程有限公司 | Flexible joint forming method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645047Y (en) * | 2003-09-28 | 2004-09-29 | 杭州龙禧智能化设备有限公司 | Plastic shell of water meter |
| CN1749705A (en) * | 2005-05-20 | 2006-03-22 | 珠海市伟华基业电子科技有限公司 | Secondary forming plastic water meter shell |
| CN2926999Y (en) * | 2006-04-10 | 2007-07-25 | 广东伟华电子科技实业有限公司 | Assembled all plastic water meter |
| CN200944055Y (en) * | 2006-08-09 | 2007-09-05 | 陶晓滨 | Water meter shell compounded by two thermoplastic plastics |
| CN200955973Y (en) * | 2006-09-29 | 2007-10-03 | 陶晓滨 | Composite thermoplastic plastics cold-hot watermeter casing |
-
2007
- 2007-12-17 CN CNB2007100508593A patent/CN100453982C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645047Y (en) * | 2003-09-28 | 2004-09-29 | 杭州龙禧智能化设备有限公司 | Plastic shell of water meter |
| CN1749705A (en) * | 2005-05-20 | 2006-03-22 | 珠海市伟华基业电子科技有限公司 | Secondary forming plastic water meter shell |
| CN2926999Y (en) * | 2006-04-10 | 2007-07-25 | 广东伟华电子科技实业有限公司 | Assembled all plastic water meter |
| CN200944055Y (en) * | 2006-08-09 | 2007-09-05 | 陶晓滨 | Water meter shell compounded by two thermoplastic plastics |
| CN200955973Y (en) * | 2006-09-29 | 2007-10-03 | 陶晓滨 | Composite thermoplastic plastics cold-hot watermeter casing |
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| Publication number | Publication date |
|---|---|
| CN101196417A (en) | 2008-06-11 |
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Granted publication date: 20090121 Termination date: 20121217 |