CN102248631A - 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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- CN102248631A CN102248631A CN2011101064628A CN201110106462A CN102248631A CN 102248631 A CN102248631 A CN 102248631A CN 2011101064628 A CN2011101064628 A CN 2011101064628A CN 201110106462 A CN201110106462 A CN 201110106462A CN 102248631 A CN102248631 A CN 102248631A
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- mould
- long plastic
- injection
- plastic cement
- charging runner
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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 cement pipe of belt lacing.
[background technology]
At present; the bathroom connecting pipe is because of there being alternately process of hot and cold water; the general plastic cement pipe that adopts copper pipe or the connection of high temperature resistant pipeline or employing to increase pipe screw joint connects; in these connected mode pipe process;, price many except that operation is high, because of leaking, joint causes functional quality problem through regular meeting.The processing technology of present bathroom connecting pipe adopts following processing step mostly: first extrusion molding pipe, intercept corresponding length then as required, pipe after then will intercepting is placed in the injection mold of joint, and the joint for one is adhered in injection moulding welding moulding again, the pipe of this mode moulding, because of appearring in cold and hot welding easily, joint comes off, poor product quality the hidden danger of leaking occurs, in addition easily, joint need be installed the thread clamp nut, and cost height, efficient are low; Adopt existing one-shot forming processing technology, because pipe is oversize, cause pipe rear end colloidal sol under-supply easily, the pipe of machine-shaping is eccentric easily and wall unevenness is 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 a kind of production technology simple, reliable product quality, the one-shot forming technique of the long plastic cement pipe of the 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 cement pipe of belt lacing has the die cavity of long plastic cement pipe respectively on the front mould of mould and back mould, be provided with loosing core of being mated in the die cavity of mould; Comprise following processing step:
1), before the injecting glue, the fairlead that cooperates the center line that also can keep loosing core to be in the die cavity center all the time with mold cavity is installed on loosing core in injection moulding process;
2), matched moulds, will be equipped with in the die cavity that loosing core of fairlead be assemblied in the back mould, then with front mould and back mould through guide pillar location back matched moulds;
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;
4), secondary injecting glue, when crossing the mould second charging runner injection point by the melten gel of first charging runner injection point injection, the envelope mouth of the mould second charging runner injection point of time-delay control is opened, continue injection from the injection point of the second charging runner of mould, the melten gel that the fairlead on loosing core is injected along with the second charging runner continues to move to the other end;
5), melten gel injection is until to die cavity caudal end precalculated position, long plastic cement pipe and connector are one-body molded;
6) cooling;
7), depanning, the long plastic cement pipe of the belt lacing of moulding ejects and depanning through the thimble release link, the long plastic cement pipe of belt lacing takes out finished product with loosing core to separate through frock clamp, fairlead then freely skids off stand-by.
Further technical scheme is that described step 4) also comprises:
Reach long plastic cement tube length three/2 o'clock by the melten gel of first charging runner injection point injection, the envelope mouth of the mould second charging runner injection point of time-delay control is opened.
Further technical scheme is that described step 4) also comprises again:
After the mould second charging runner injection point, also be provided with a plurality of injection point, and by a plurality of normally closed hot flow paths envelope mouths time-delay control, when injection, open one by one and enter melten gel and constantly push away fairlead and advance and fill with moulding until product.
Further technical scheme is that described fairlead is copper sleeve or stainless steel sleeve pipe, and other metal sleeves again.
Advantage of the present invention:
Segmentation injection molding way is step by step adopted in the processing of the long plastic cement pipe of belt lacing of the present invention, be that first injection point is when being expelled to certain-length with the long plastic cement pipe of belt lacing, second injection point begins then injection moulding, can effectively prolong the length of product, in the process, because the fairlead that adopts other metal sleeves such as copper sleeve or stainless steel sleeve pipe to make, making looses core, and keep in when injection between two parties can't be eccentric, and, effectively play positioning action owing to fairlead is stepped back until having reached the length that long plastic cement pipe requires along with injecting entering of melten gel; Adopted relatively in the past and extruded the not pipe of limit for length's degree, cut according to Len req again, the injection mold injection molding joint of putting into joint geometry is the processing mode of one, fairlead on loosing core makes in the long plastic cement Pipe forming process wall thickness even, effectively improving working (machining) efficiency and product quality, can directly be that 300mm, diameter are that the long plastic cement pipe of belt lacing of 7mm is one-body molded with length; Certainly, requirement according to long plastic cement tube length, after the mould second charging runner injection point, can also be provided with a plurality of injection point, and by a plurality of normally closed hot flow path envelope mouth time-delay controls, the time open one by one to enter melten gel and constantly to promote fairlead in injection and advance and fill with moulding, satisfy the processing of the long plastic cement pipe of length until product; Because long plastic cement pipe of the present invention and connector adopt one-time formed technology, connector can be combined with long plastic cement pipe firmly, can not separate or leak internal liquid, reduce the appearance of functional safety problem greatly, the possibility that junction between the sanitaryware is leaked is reduced to minimum, also reduces manufacturing cost simultaneously.
[description of drawings]
Fig. 1 is the structural representation of mould of the present invention;
Fig. 2 has the structural representation of loosing core of fairlead for the present invention.
[specific embodiment]
The one-shot forming technique of the long plastic cement pipe of belt lacing, as illustrated in fig. 1 and 2, present embodiment adopts the two section type injection pattern, and the die cavity 2 of long plastic cement pipe is arranged respectively on the front mould of mould 1 and back mould, in the die cavity of mould, be provided be mated loose core 3; Comprise following processing step:
1), before the injecting glue, the fairlead 4 that cooperates 3 the center line of also can keeping loosing core to be in die cavity 2 centers all the time 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, 3 be assemblied in the die cavity of back mould loosing core of copper sleeve 4 is installed, then with front mould and back mould through back, guide pillar 5 location matched moulds;
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, reach long plastic cement tube length three/2 o'clock by the melten gel of the first charging runner injection point 6 injection, the envelope mouth of the mould second charging runner injection point 7 of time-delay control is opened, continue injection from the injection point of the second charging runner of mould 1, 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 cement pipe and connector are one-body molded;
6) cooling;
7), depanning, the long plastic cement pipe of the belt lacing of moulding ejects and depanning through thimble release link 8, the long plastic cement pipe of belt lacing 3 separates through frock clamp and to take out finished product with loosing core, 4 of copper sleeves freely skid off stand-by.
Certainly, requirement according to long plastic cement tube length, after the mould second charging runner injection point 7, can also be provided with a plurality of injection point, and by a plurality of normally closed hot flow path envelope mouth time-delay controls, the time open one by one in injection and to enter melten gel and constantly push away copper sleeve 4 and advance and fill with moulding, satisfy the processing of the long plastic cement pipe of length until product.
Because long plastic cement pipe of the present invention and connector adopt one-time formed technology, connector can be combined with long plastic cement pipe firmly, can not separate or leak internal liquid, reduce the appearance of functional safety problem greatly, the possibility that junction between the sanitaryware is leaked is reduced to minimum, also reduces manufacturing cost simultaneously.
More than describe only be used for explanation and and unrestricted technical scope of the present invention, do conspicuous change according to the prompting of above-mentioned example, and other every change that does not break away from patent essence of the present invention all should be included within the described scope of claim.
Claims (4)
1. the one-shot forming technique of the long plastic cement pipe of belt lacing has the die cavity of long plastic cement pipe respectively on the front mould of mould and back mould, be provided with loosing core of being mated in the die cavity of mould; It is characterized in that, comprise following processing step:
1), before the injecting glue, the fairlead that cooperates the center line that also can keep loosing core to be in the die cavity center all the time with mold cavity is installed on loosing core in injection moulding process;
2), matched moulds, will be equipped with in the die cavity that loosing core of fairlead be assemblied in the back mould, then with front mould and back mould through guide pillar location back matched moulds;
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;
4), secondary injecting glue, when crossing the mould second charging runner injection point by the melten gel of first charging runner injection point injection, the envelope mouth of the mould second charging runner injection point of time-delay control is opened, continue injection from the injection point of the second charging runner of mould, the melten gel that the fairlead on loosing core is injected along with the second charging runner continues to move to the other end;
5), melten gel injection is until to die cavity caudal end precalculated position, long plastic cement pipe and connector are one-body molded;
6) cooling;
7), depanning, the long plastic cement pipe of the belt lacing of moulding goes out and depanning in advance through the thimble release link, the long plastic cement pipe of belt lacing takes out finished product with loosing core to separate through frock clamp, fairlead then freely skids off stand-by.
2. the one-shot forming technique of the long plastic cement pipe of belt lacing according to claim 1 is characterized in that described step 4) also comprises:
Reach long plastic cement tube length three/2 o'clock by the melten gel of first charging runner injection point injection, the envelope mouth of the mould second charging runner injection point of time-delay control is opened.
3. the one-shot forming technique of the long plastic cement pipe of belt lacing according to claim 1 is characterized in that described step 4) also comprises:
After the mould second charging runner injection point, also be provided with a plurality of injection point, and by a plurality of normally closed hot flow paths envelope mouths time-delay control, when injection, open one by one by entering melten gel and constantly promote fairlead and advance and fill with moulding until product.
4. according to the one-shot forming technique of claim 1 or the long plastic cement pipe of 3 described belt lacings, 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102248631A true CN102248631A (en) | 2011-11-23 |
| CN102248631B CN102248631B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN102248631B (en) |
Cited By (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 |
| CN102990865A (en) * | 2012-11-28 | 2013-03-27 | 珠海三威注塑模具有限公司 | Pipe injection mould |
| CN106273230A (en) * | 2016-10-20 | 2017-01-04 | 福州大学 | The anti-eccentric of injection of a kind of thin-walled profound and subtle hole series products and method of work |
| CN114121385A (en) * | 2020-08-27 | 2022-03-01 | 深圳市勤诚鑫科技有限公司 | Injection molding method for sheath of charging wire |
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 |
-
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 |
Cited By (7)
| 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 |
| CN102990865A (en) * | 2012-11-28 | 2013-03-27 | 珠海三威注塑模具有限公司 | Pipe injection mould |
| 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 |
| CN106273230A (en) * | 2016-10-20 | 2017-01-04 | 福州大学 | The anti-eccentric of injection of a kind of thin-walled profound and subtle hole series products and method of work |
| 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 |
| CN114121385A (en) * | 2020-08-27 | 2022-03-01 | 深圳市勤诚鑫科技有限公司 | Injection molding method for sheath of charging wire |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102248631B (en) | 2013-11-27 |
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Granted publication date: 20131127 Termination date: 20200427 |