CN102248631B - One-through shaping technology of long plastic tube with joint - Google Patents
One-through shaping technology of long plastic tube with joint Download PDFInfo
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- CN102248631B CN102248631B CN2011101064628A CN201110106462A CN102248631B CN 102248631 B CN102248631 B CN 102248631B CN 2011101064628 A CN2011101064628 A CN 2011101064628A CN 201110106462 A CN201110106462 A CN 201110106462A CN 102248631 B CN102248631 B CN 102248631B
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- mould
- long plastic
- charging runner
- injection
- injection point
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Abstract
The invention provides a one-through shaping technology of a long plastic tube with a joint. A progressive separated injection method is adopted: a first injection site injects a long plastic tube with a joint to a certain length, then a second injection site starts to inject, so as to prolong product length effectively. During processing, locating effect of a guide bushing made of a copper sleeve or a stainless steel sleeve enables a loose core to stay in the center without decentration during the injections; besides, the guide bushing moves back with penetration of injecting melt until a length required by the long plastic tube is reached, so the guide bushing on the loose core enables the long plastic tube to have a uniform wall thickness and enables one-through shaping of the long plastic tube and the joint.
Description
[technical field]
The present invention relates to the processing technology of plastic material, relate in particular to the one-shot forming technique of the long plastic & Rubber pipe of belt lacing.
[background technology]
At present; the bathroom connecting pipe road is because there being alternately process of hot and cold water; the general plastic pipe that adopts copper pipe or high-temperature resistant pipeline connection or employing to increase pipe screw joint connects; in these connected mode pipe process; except operation is many, price high, often can cause functional quality problem because joint leaks.The processing technology in current bathroom connecting pipe road adopts following processing step mostly: first extrusion molding pipe, then intercept as required corresponding length, pipe after then intercepting is placed in the injection mold of joint, then the injection moulding fusion molding adheres to the joint be integrated, the pipe of this mode moulding, because Joint's falling off easily appears in cold and hot welding, poor product quality, the hidden danger of leaking easily occurs, in addition, joint need to be installed the thread clamp nut, and the cost-effective rate is low; Adopt existing one-shot forming processing technology, because pipe is oversize, easily cause pipe rear end colloidal sol under-supply, the easy bias of the pipe of machine-shaping and wall unevenness are even, can't be one-body molded.
[summary of the invention]
The present invention has overcome the deficiencies in the prior art and shortcoming, provides that a kind of production technology is simple, reliable product quality, the one-shot forming technique of the long plastic & Rubber pipe of belt lacing that processing cost is low.
For achieving the above object, the technical solution used in the present invention is:
The one-shot forming technique of the long plastic & Rubber pipe of belt lacing, be respectively equipped with the die cavity corresponding with long plastic & Rubber pipe on the front mould of mould and rear mold, in the die cavity of mould, be provided with loosing core of being mated; Comprise following processing step:
1), before injecting glue, on loosing core, install with mold cavity, to coordinate also and can in injection moulding process, keep the center line of loosing core to be in all the time the fairlead at die cavity center;
2), matched moulds, by loosing core of fairlead is installed, be assemblied in the die cavity of rear mold, then by front mould and rear mold matched moulds behind the guide pillar location;
3), an injecting glue, the envelope mouth of the first charging runner injection point of mould is opened, from the injection point injection of the first charging runner of mould, the melten gel that the fairlead on loosing core is injected along with the first charging runner moves to the other end of loosing core;
4), secondary injecting glue, while by the melten gel of the first charging runner injection point injection, crossing mould the second charging runner injection point, the envelope mouth of mould the second charging runner injection point that time delay is controlled is opened, from the injection point of the second charging runner of mould, continue injection, the melten gel that the fairlead on loosing core is injected along with the second charging runner continues to move to the other end of loosing core;
5), the melten gel injection is until to die cavity caudal end precalculated position, long plastic & Rubber pipe and connector are one-body molded;
6) cooling;
7), depanning, the long plastic & Rubber pipe of the belt lacing of moulding ejects and depanning through the thimble release link, the long plastic & Rubber pipe of belt lacing separates and takes out finished product through frock clamp with loosing core, fairlead freely skids off stand-by.
Further technical scheme is, described step 4) in, " while by the melten gel of the first charging runner injection point injection, crossing mould the second charging runner injection point, the envelope mouth of mould the second charging runner injection point that time delay is controlled is opened " also can further adopt following control step:
By the melten gel of the first charging runner injection point injection, reach long plastic & Rubber pipe length three/2 o'clock, the envelope mouth of mould the second charging runner injection point that time delay is controlled is opened.
Further technical scheme is, described step 4) also comprise:
After mould the second charging runner injection point, also be provided with a plurality of injection point, and controlled by the time delay of a plurality of normally closed hot flow paths envelope mouth, when injection, open one by one and enter melten gel and push away constantly that fairlead advances until product is filled with moulding.
Further technical scheme is, described fairlead is copper sleeve or stainless steel sleeve pipe, and other metal sleeves.
Advantage of the present invention:
The segmentation mode of injection moulding is step by step adopted in the processing of the long plastic & Rubber pipe of belt lacing of the present invention, be that the first injection exit point is while being expelled to certain-length by the long plastic & Rubber pipe of belt lacing, second injection point starts then injection moulding, can effectively extend the length of product, in process, the fairlead of making due to other metal sleeves such as adopting copper sleeve or stainless steel sleeve pipe, making to loose core maintenance when injection between two parties can't be eccentric, and due to fairlead along with entering of injection melten gel stepped back until reached the length that long plastic & Rubber pipe requires, effectively play positioning action; Relatively adopted and extruded the not pipe of limit for length's degree in the past, according to Len req, cut again, put into the processing mode that the injection mold injection molding joint of joint geometry is integrated, fairlead on loosing core makes in long plastic & Rubber pipe forming process wall thickness even, effectively improving working (machining) efficiency and product quality, can be directly that 300mm, diameter are that the long plastic & Rubber pipe of belt lacing of 7mm is one-body molded by length; Certainly, requirement according to long plastic & Rubber pipe length, after mould the second charging runner injection point, can also be provided with a plurality of injection point, and controlled by the time delay of a plurality of normally closed hot flow path envelope mouth, when injection, open one by one to enter melten gel and constantly promote fairlead and advance until product is filled with moulding, meet the processing of the long plastic & Rubber pipe of length; Due to long plastic & Rubber pipe of the present invention and the one-time formed technique of connector employing, connector can be combined with long plastic & Rubber pipe firmly, can not separate or leak internal liquid, greatly reduce the appearance of functional safety problem, the possibility that junction between sanitaryware is leaked is down to minimum, also reduces manufacturing cost simultaneously.
[accompanying drawing explanation]
Fig. 1 is the structural representation of mould of the present invention;
Fig. 2 is the pulled core structure schematic diagram of the present invention with fairlead.
[specific embodiment]
The one-shot forming technique of the long plastic & Rubber pipe of belt lacing, as illustrated in fig. 1 and 2, the present embodiment adopts the two section type injection pattern, and the die cavity 2 of long plastic & Rubber pipe is arranged respectively on the front mould of mould 1 and rear mold, in the die cavity of mould, be provided be mated loose core 3; Comprise following processing step:
1), before injecting glue, the fairlead 4 that coordinates 3 the center line of also can keeping loosing core to be in all the time die cavity 2 centers with mould 1 die cavity 2 is installed loosing core on 3 in injection moulding process, fairlead is copper sleeve (following fairlead is referred to as copper sleeve);
2), matched moulds, by loosing core of copper sleeve 4 is installed, 3 be assemblied in the die cavity of rear mold, then the matched moulds behind guide pillar 5 location by front mould and rear mold;
3), an injecting glue, the envelope mouth of the first charging runner injection point 6 of mould 1 is opened, from the injection point injection of the first charging runner of mould 1, the melten gel that the copper sleeve 4 on 3 of loosing core is injected along with the first charging runner 6 moves to the other end;
4), secondary injecting glue, by the melten gel of the first charging runner injection point 6 injection, reach long plastic & Rubber pipe length three/2 o'clock, the envelope mouth of mould the second charging runner injection point 7 that time delay is controlled is opened, from the injection point of the second charging runner of mould 1, continue injection, the melten gel that the copper sleeve 4 on 3 of loosing core is injected along with the second charging runner continues to move to the other end;
5), melten gel injection until to die cavity caudal end precalculated position 2 ', long plastic & Rubber pipe and connector are one-body molded;
6) cooling;
7), depanning, the long plastic & Rubber pipe of the belt lacing of moulding ejects and depanning through thimble release link 8, the long plastic & Rubber pipe of belt lacing 3 separates and takes out finished product through frock clamp with loosing core, 4 of copper sleeves freely skid off stand-by.
Certainly, requirement according to long plastic & Rubber pipe length, after mould the second charging runner injection point 7, can also be provided with a plurality of injection point, and controlled by the time delay of a plurality of normally closed hot flow path envelope mouth, in when injection, open one by one and enter melten gel and constantly push away copper sleeve 4 and advance until product is filled with moulding, meet the processing of the long plastic & Rubber pipe of length.
Due to long plastic & Rubber pipe of the present invention and the one-time formed technique of connector employing, connector can be combined with long plastic & Rubber pipe firmly, can not separate or leak internal liquid, greatly reduce the appearance of functional safety problem, the possibility that junction between sanitaryware is leaked is down to minimum, also reduces manufacturing cost simultaneously.
Above description, only for explanation and unrestricted technical scope of the present invention, according to the prompting of above-mentioned example, do apparent change, and other every change that does not break away from patent essence of the present invention, within all should being included in the described scope of claim.
Claims (4)
1. the one-shot forming technique of the long plastic & Rubber pipe of belt lacing, be respectively equipped with the die cavity corresponding with long plastic & Rubber pipe on the front mould of mould and rear mold, in the die cavity of mould, be provided with loosing core of being mated; It is characterized in that, comprise following processing step:
1), before injecting glue, on loosing core, install with mold cavity, to coordinate also and can in injection moulding process, keep the center line of loosing core to be in all the time the fairlead at die cavity center;
2), matched moulds, by loosing core of fairlead is installed, be assemblied in the die cavity of rear mold, then by front mould and rear mold matched moulds behind the guide pillar location;
3), an injecting glue, the envelope mouth of the first charging runner injection point of mould is opened, from the injection point injection of the first charging runner of mould, the melten gel that the fairlead on loosing core is injected along with the first charging runner moves to the other end of loosing core;
4), secondary injecting glue, while by the melten gel of the first charging runner injection point injection, crossing mould the second charging runner injection point, the envelope mouth of mould the second charging runner injection point that time delay is controlled is opened, from the injection point of the second charging runner of mould, continue injection, the melten gel that the fairlead on loosing core is injected along with the second charging runner continues to move to the other end of loosing core;
5), the melten gel injection is until to die cavity caudal end precalculated position, long plastic & Rubber pipe and connector are one-body molded;
6) cooling;
7), depanning, the long plastic & Rubber pipe of the belt lacing of moulding ejects and depanning through the thimble release link, the long plastic & Rubber pipe of belt lacing separates and takes out finished product through frock clamp with loosing core, fairlead freely skids off stand-by.
2. the one-shot forming technique of the long plastic & Rubber pipe of belt lacing according to claim 1, it is characterized in that, described step 4) in, " while by the melten gel of the first charging runner injection point injection, crossing mould the second charging runner injection point, the envelope mouth of mould the second charging runner injection point that time delay is controlled is opened " also can further adopt following control step:
By the melten gel of the first charging runner injection point injection, reach long plastic & Rubber pipe length three/2 o'clock, the envelope mouth of mould the second charging runner injection point that time delay is controlled is opened.
3. the one-shot forming technique of the long plastic & Rubber pipe of belt lacing according to claim 1, is characterized in that, described step 4) also comprise:
After mould the second charging runner injection point, also be provided with a plurality of injection point, and controlled by the time delay of a plurality of normally closed hot flow paths envelope mouth, when injection, open one by one by entering melten gel and promote constantly that fairlead advances until product is filled with moulding.
4. according to the one-shot forming technique of the long plastic & Rubber pipe of the described belt lacing of claim 1 or 3, it is characterized in that, described fairlead is copper sleeve or stainless steel sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101064628A CN102248631B (en) | 2011-04-27 | 2011-04-27 | One-through shaping technology of long plastic tube with joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101064628A CN102248631B (en) | 2011-04-27 | 2011-04-27 | One-through shaping technology of long plastic tube with joint |
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| Publication Number | Publication Date |
|---|---|
| CN102248631A CN102248631A (en) | 2011-11-23 |
| CN102248631B true CN102248631B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101064628A Expired - Fee Related CN102248631B (en) | 2011-04-27 | 2011-04-27 | One-through shaping technology of long plastic tube with joint |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922677A (en) * | 2012-11-23 | 2013-02-13 | 昆山博爱模具开发有限公司 | Spray pipe mold |
| CN102990865B (en) * | 2012-11-28 | 2016-01-20 | 珠海三威注塑模具有限公司 | A kind of Pipe injection mould |
| CN106273230B (en) * | 2016-10-20 | 2018-10-30 | 福州大学 | A kind of anti-eccentric of injection molding and working method of the profound and subtle hole class product of thin-walled |
| CN114121385B (en) * | 2020-08-27 | 2024-04-02 | 深圳市勤诚鑫科技有限公司 | Charging wire sheath injection molding method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005088413A (en) * | 2003-09-18 | 2005-04-07 | Toppan Printing Co Ltd | Plastic tube molding method |
| CN201098982Y (en) * | 2007-08-15 | 2008-08-13 | 周兆卿 | Injection formation negative mould for processing pipe joint |
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2011
- 2011-04-27 CN CN2011101064628A patent/CN102248631B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005088413A (en) * | 2003-09-18 | 2005-04-07 | Toppan Printing Co Ltd | Plastic tube molding method |
| CN201098982Y (en) * | 2007-08-15 | 2008-08-13 | 周兆卿 | Injection formation negative mould for processing pipe joint |
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| CN102248631A (en) | 2011-11-23 |
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