CN101612790A - A kind of expansion method of thermal shrinkage pipe material with large caliber and expansion device thereof - Google Patents
A kind of expansion method of thermal shrinkage pipe material with large caliber and expansion device thereof Download PDFInfo
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- CN101612790A CN101612790A CN200810128443A CN200810128443A CN101612790A CN 101612790 A CN101612790 A CN 101612790A CN 200810128443 A CN200810128443 A CN 200810128443A CN 200810128443 A CN200810128443 A CN 200810128443A CN 101612790 A CN101612790 A CN 101612790A
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Abstract
A kind of expansion method of thermal shrinkage pipe material with large caliber and expansion device thereof, in order to overcome when thermal shrinkage pipe material with large caliber is expanded now is to adopt expansion continuously to receive the method for pipe continuously, cause rate of expansion very slow, the shortcoming that production efficiency is low, the invention provides a kind of expansion method of novel thermal shrinkage pipe material with large caliber, its technical conceive is, expansion and receipts pipe do not carry out simultaneously, but the discontinuity circulation is carried out, do not receive pipe when promptly expanding, do not expand when receiving pipe, owing to do not expand when receiving pipe, can reduce when receiving pipe traction force significantly to tubing, solved two problems of tubing cooling and shaping and stretcher strain, therefore, by the method for lengthening dilatation mold, can increase substantially rate of expansion, enhance productivity; Simultaneously, the present invention also utilizes this design to design corresponding expansion device, utilize time control switch, magnetic valve to dilatation mold carry out the air-breathing of discontinuity and venting, utilize stroke observing and controlling switch to control to receiving length of tube, realize expansion, receive two flow process discontinuity circulations of pipe and carries out.
Description
Technical field
The present invention relates to a kind of thermal shrinkage pipe material expansion method and expansion device thereof, especially a kind of expansion method of thermal shrinkage pipe material with large caliber and expansion device thereof.
Background technology
Current, the principle of thermal shrinkage pipe material dilator is like this: dilatation mold connects vacuum system and cooling recirculation system respectively, make dies cavity keep the vacuum state and the state of cooling always, tube-conveyer is sent thermal shrinkage pipe material into oil groove and is soaked heating, under the effect of pipe collecting machine, tubing after being heated enters dilatation mold from an end, obtain expansion and cooling and shaping in the mould the inside, be drawn out from the mould other end then, be characterized in: in process of expansion, flow processs such as expansion, receipts pipe are carried out simultaneously always continuously.Because thermal shrinkage pipe material produces pressure to mould inner wall when expansion, cause producing the frictional force resistance between the two, pipe collecting machine must have certain traction force when receiving pipe, just can overcome this resistance and receive pipe, traction force is big more, the easy more stretcher strain of thermal shrinkage pipe material defective work will occur when serious.Frictional resistance during the thermal shrinkage pipe material with large caliber expansion is very big, for the resistance of reducing friction, dilatation mold length often must design shortlyer, general length is 30 to 50 centimeter length, in order to make tubing obtain sufficient cooling and shaping in the mould the inside, the rate of expansion of thermal shrinkage pipe material with large caliber must be controlled very slow, and general per minute is no more than 50 centimetres, has a strong impact on production efficiency.
Summary of the invention
The thermal shrinkage pipe material with large caliber rate of expansion is very slow now in order to overcome, and the shortcoming that production efficiency is low the invention provides a kind of thermal shrinkage pipe material expansion method and expansion device thereof, its principle is: expansion and receipts pipe are not to carry out simultaneously, but discontinuity circulation carries out, and do not receive pipe when promptly expanding, and do not expand when receiving pipe, owing to do not expand when receiving pipe, can reduce when receiving pipe traction force significantly to tubing, therefore, by the length of lengthening dilatation mold, can increase substantially rate of expansion, enhance productivity.
The present invention is achieved through the following technical solutions its goal of the invention: expansion method of the present invention, its technical characterictic is: the dilatation mold of a lengthening of design, dilatation mold is connected with vacuum system by solenoid electric valve, control by magnetic valve, carry out air-breathing to dies cavity by phased manner and venting, when dilatation mold is connected with vacuum system, carry out air-breathing to mould, when dilatation mold and vacuum system disconnection, mould is exitted, dilatation mold with guarantee that dies cavity is in the state of cooling always being connected of cooling recirculation system, simultaneously, mould is being carried out in the air-breathing process, and pipe collecting machine stops to receive pipe; In the process that mould is exitted, pipe collecting machine is received pipe, in whole process of expansion, is arranged on heating oil groove tube-conveyer and pipe collecting machine before and accepts identical signal synchronously; In a working cycles, the control of the signal of telecommunication is such: when a signal of telecommunication passes to time control switch, magnetic valve, pipe collecting machine simultaneously, time control switch picks up counting, magnetic valve moves, begins mold suction, tubing is expanded, and simultaneously, pipe collecting machine is shut down; When reaching the time of setting, the time control switch action passes to magnetic valve and pipe collecting machine with signal, and the magnetic valve action begins the mould venting, removes the tubing expansion, and simultaneously, pipe collecting machine starts, begins to receive pipe; When reaching the receipts length of tube, stroke observing and controlling switch motion produces a signal of telecommunication and gives time control switch, magnetic valve, pipe collecting machine with electrical signal transfer, begins a working cycles; Expansion device of the present invention, mainly comprise the frame that is used for fixing installation, the pipe dish, tube-conveyer, the heating oil groove, dilatation mold, pipe collecting machine and electric cabinet, also comprise and set up following electrical equipment: magnetic valve, time control switch and travel control switch, its technical characterictic is: utilize aforesaid expansion method, time control switch can be arranged on electric cabinet inside, magnetic valve is arranged near the of dilatation mold and installs and fixes, vacuum connection tube on the dilatation mold is connected with vacuum system by magnetic valve, stroke observing and controlling switch is arranged on observing and controlling receipts length of tube on the pipe collecting machine, is arranged on heating oil groove tube-conveyer and pipe collecting machine before and accepts identical signal synchronously.
The invention has the beneficial effects as follows, because flow processs such as expansion and receipts pipe are that the discontinuity circulation is carried out, do not receive pipe when promptly expanding, do not expand when receiving pipe, can reduce when receiving pipe traction force significantly to tubing, therefore, by the length of lengthening dilatation mold, can increase substantially rate of expansion, enhance productivity.
Description of drawings
Fig. 1 is the layout of equipment of an embodiment of prior art,
Fig. 2 is the layout of equipment of one embodiment of the invention, and Fig. 3 is the gas circuit control principle schematic diagram of this embodiment.
Fig. 4 is the layout of equipment of another embodiment of the present invention.
Fig. 5 is the layout of equipment of another embodiment of the present invention.
Fig. 6 is the layout of equipment of another embodiment of the present invention.
Fig. 7 is the layout of equipment of another embodiment of the present invention.
Among the figure: 1. pipe dish, 2. pipe plate rail, 3.1,3.2 hot jacket tubing, 4 tube-conveyers, 5. heating oil groove, 6. dilatation mold 7.1,7.2 cooling recirculation systems, 8. vacuum system, 9. pipe collecting machine is 10. received the pipe frame, 11. magnetic valve, 12. stroke observing and controlling switch, 13. time control switch, 14. electric cabinets, 15. the attached frame that helps, 16. pressed gas systems.
The specific embodiment
In the embodiment in figure 1 as can be seen, in the prior art, dilatation mold 6 connects vacuum system 8 and cooling recirculation system 7.1 and 7.2 respectively, mould 6 inner chambers keep the vacuum state and the state of cooling always, tube-conveyer 9 is sent thermal shrinkage pipe material 3.1 into heating oil groove 5 and is soaked heating, under the effect of pipe collecting machine 9, tubing 3.1 after being heated enters dilatation mold 6 from an end, obtain expansion and cooling and shaping in mould 6 the insides, be drawn out from mould 6 other ends then, be characterized in: in process of expansion, flow processs such as expansion, receipts pipe are carried out simultaneously always continuously.Because thermal shrinkage pipe material produces pressure to mould inner wall when expansion, cause producing frictional resistance between the two, pipe collecting machine 9 must have certain traction force when receiving pipe, just can overcome this resistance and receive pipe, traction force is big more, the easy more stretcher strain of thermal shrinkage pipe material defective work will occur when serious.Frictional resistance during the thermal shrinkage pipe material with large caliber expansion is very big, for the resistance of reducing friction, existing dilatation mold 6 length often must design very shortly, generally have only 30 to 50 centimetres, because mould is very short, in order to make tubing obtain sufficient cooling and shaping in the mould the inside, the rate of expansion of thermal shrinkage pipe material with large caliber must be controlled very slow, thereby has a strong impact on production efficiency.
Fig. 2 is the layout of equipment of one embodiment of the invention.In this embodiment, dilatation mold is by mould 6.1,6.2,6.3 constituting a long mould, serial connection is fixed on attached helping on the frame 15, the total length of mould can be set at 1 meter to 1.5 meters, time control switch 13 is arranged on electric cabinet 14 inside, other control element does not mark in the drawings in the electric cabinet 14, stroke observing and controlling switch 12 is arranged on observing and controlling receipts length of tube on pipe collecting machine 9 rollers, be arranged on heating oil groove 5 tube-conveyer 4 and pipe collecting machine 9 before and accept identical signal synchronously, magnetic valve 11 is arranged near the of dilatation mold and on frame, installs and fixes, vacuum connection tube on the dilatation mold is connected cooling tube connector on the dilatation mold and cooling recirculation system 7.1 by magnetic valve 11 with vacuum system 8,7.2 connect and guarantee that dies cavity is in the state of cooling always.
Can adopt principle schematic shown in Figure 3 to carry out gas circuit control, in Fig. 3 as can be seen, dilatation mold 6.1 is connected with vacuum system 8 by solenoid electric valve 11, by the control of magnetic valve 11, dilatation mold is connected with vacuum system formation by phased manner and disconnects; When the vacuum connection tube on the dilatation mold is connected with vacuum system, mould is carried out air-breathing, thermal shrinkage pipe material obtain the expansion; When vacuum connection tube on the dilatation mold and vacuum system disconnection, dilatation mold is exitted, remove expansion to thermal shrinkage pipe material, present embodiment is to exit naturally by outside air.Simultaneously, mould is being carried out in the air-breathing process, pipe collecting machine 9 stops to receive pipe; In the process that mould is exitted, pipe collecting machine 9 is received pipe.In actual production, in the expansionary phase, consider that the dilatation mold pipes at two ends arrival end and the port of export can produce certain gas leak phenomenon, want the sealing problem of attention port on the one hand, to note on the other hand dilatation mold is started inspiratory flow rate speed of evacuation when air-breathing, the speed of evacuation is little, vacuum adsorption force to tubing is just little, tubing just can not fully be expanded, therefore, the system vacuum degree, the bore of vacuum connection tube bore and magnetic valve all is the parameter that consider, and parameter is chosen below can doing: the gas pressure of vacuum system is less than 0.5 atmospheric pressure, vacuum connection tube bore, the nominal diameter of magnetic valve bore is greater than 25 centimetres.Simultaneously,, can on pipeline, set up flow control valve, be used to regulate the air-breathing of pipeline or venting speed, so that meet different technological requirements according to demand of practical production.
In a working cycles of present embodiment, the control of the signal of telecommunication is such: after a signal of telecommunication passes to time control switch 13, magnetic valve 11, pipe collecting machine 9 simultaneously, time control switch 13 picks up counting, magnetic valve 11 moves, begins mould 6 air-breathing, tubing is expanded, simultaneously, pipe collecting machine 9 is shut down; Preestablish a rational actuation time, can be set at 15 seconds, when reaching the time of setting, time control switch 13 actions pass to magnetic valve 11 and pipe collecting machine 9 with signal, magnetic valve 11 actions, begin the venting of mould 6 tools, simultaneously, pipe collecting machine 9 begins to start to receive manages; Set one and reasonably receive length of tube, its value should match each other with die length, when reaching the receipts length of tube, and 12 actions of stroke observing and controlling switch, produce a signal of telecommunication and the signal of telecommunication is passed to time control switch 13, magnetic valve 11, pipe collecting machine 9 simultaneously, begin next working cycles.In this enforcement, magnetic valve 11 can be selected the two-position three way control valve for use.
Fig. 4 is the layout of equipment of another embodiment of the present invention.Different with Fig. 2 embodiment is, consider that still there are certain attaching power in deflation course tubing and dilatation mold inwall, promptly produce certain frictional resistance, this resistance can influence pipe collecting machine 9 and start the receipts pipe, therefore, the 11 control dilatation mold venting of present embodiment magnetic valve realize by inserting a pressed gas system 16.
Fig. 5 is the layout of equipment of another embodiment of the present invention.Different with Fig. 2 embodiment is, present embodiment stroke observing and controlling switch 12 be mounted in thermal shrinkage pipe material 3.2 near be used for carrying out observing and controlling to receiving length of tube.
Fig. 6 is the layout of equipment of another embodiment of the present invention.Different with Fig. 2 embodiment is that present embodiment stroke observing and controlling switch 12 is mounted on the pipe dish 1 and carries out observing and controlling to receiving length of tube.
Fig. 7 is the layout of equipment of another embodiment of the present invention.Different with Fig. 2 embodiment is that the expansion mould 6 of present embodiment is an integral body lengthening mould, is not connected in series not form.
Claims (10)
1. the expansion method of a thermal shrinkage pipe material with large caliber is characterized in that: production process is by expansion and receive two flow process discontinuity circulations of pipe and carry out, and promptly process of expansion stops to receive pipe, receives the pipe process and does not expand.
2. the expansion method of a kind of thermal shrinkage pipe material with large caliber according to claim 1, it is characterized in that: even described expansion is to form to be connected by dilatation mold and vacuum system mould is carried out air-breathing dies cavity air pressure to reduce the process of tubing being carried out vacuum suction, even described do not expand be by disconnect dilatation mold and vacuum system be connected and to the mould process of dies cavity air pressure rising of exitting to tubing releasing vacuum suction.
3. the expansion method of a kind of thermal shrinkage pipe material with large caliber according to claim 1, it is characterized in that: the described breathing process time is carried out by time control switch, the described deflation course time is received the execution of length of tube gauge tap by being provided with, and described receipts length of tube gauge tap can be a stroke observing and controlling switch.
4. the expansion method of a kind of thermal shrinkage pipe material with large caliber according to claim 1, it is characterized in that: described venting is communicated with realization by making dies cavity with outside air, also can be by dies cavity and a pressed gas system connectivity are realized.
5. the expansion device of a thermal shrinkage pipe material with large caliber, it is characterized in that: it is the expansion device that utilizes the described expansion method design of claim 1, by sending pipe, heating, expansion, receipts pipe, each assembly of observing and controlling to constitute, mainly comprise: pipe dish, pipe plate rail, tube-conveyer, heating oil groove, dilatation mold, pipe collecting machine, vacuum system, cooling system, pressed gas system, electric control system.
6. the expansion device of a kind of thermal shrinkage pipe material with large caliber according to claim 5, it is characterized in that: described dilatation mold is a long mould, can be to form by several short moulds serial connections, also can be the long mould of an integral body.
7. the expansion device of a kind of thermal shrinkage pipe material with large caliber according to claim 5 is characterized in that: described electric control system also comprises setting up and is used to control the magnetic valve that dilatation mold is connected with vacuum system, also comprises time control switch, stroke observing and controlling switch.
8. the expansion device of a kind of thermal shrinkage pipe material with large caliber according to claim 7, it is characterized in that: thus connection and the disconnection that gas circuit makes it discontinuity that be connected that described magnetic valve is used to control between dilatation mold and the vacuum system carried out the air-breathing of discontinuity and venting to dilatation mold, the described breathing process time is controlled by described time control switch, the described deflation course time is controlled by stroke observing and controlling switch, and described stroke observing and controlling switch is used for the length of observing and controlling receipts pipe and sends signal to magnetic valve making its conversion gas circuit.
9. according to the expansion device of claim 7 or 8 described a kind of thermal shrinkage pipe material with large caliber, it is characterized in that: described stroke observing and controlling switch can be arranged on the roller of pipe collecting machine roller rotated and carry out observing and controlling, it is neighbouring to tubing operation carrying out observing and controlling also can be arranged on thermal shrinkage pipe material, can be arranged on the tube-conveyer, also can be arranged on the pipe dish.
10. the expansion device of a kind of thermal shrinkage pipe material with large caliber according to claim 5, it is characterized in that: the control principle of described electric control system is, when a signal of telecommunication passes to time control switch, magnetic valve, pipe collecting machine simultaneously, time control switch picks up counting, magnetic valve moves, begins mold suction, tubing is expanded, and simultaneously, pipe collecting machine is shut down; When reaching the time of setting, the time control switch action passes to magnetic valve and pipe collecting machine with signal, and the magnetic valve action begins the mould venting, removes the tubing expansion, and simultaneously, pipe collecting machine starts receives pipe; When reaching the receipts length of tube, stroke observing and controlling switch motion produces a signal of telecommunication and gives time control switch, magnetic valve, pipe collecting machine with electrical signal transfer, begins a working cycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810128443 CN101612790B (en) | 2008-06-23 | 2008-06-23 | Expansion method and expansion equipment thereof of thermal shrinkage pipe material with large caliber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810128443 CN101612790B (en) | 2008-06-23 | 2008-06-23 | Expansion method and expansion equipment thereof of thermal shrinkage pipe material with large caliber |
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| CN101612790A true CN101612790A (en) | 2009-12-30 |
| CN101612790B CN101612790B (en) | 2013-07-17 |
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| CN 200810128443 Active CN101612790B (en) | 2008-06-23 | 2008-06-23 | Expansion method and expansion equipment thereof of thermal shrinkage pipe material with large caliber |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920560A (en) * | 2010-07-21 | 2010-12-22 | 黄山金马股份有限公司 | Shrinkable tube reshaping device |
| CN102794905A (en) * | 2012-08-06 | 2012-11-28 | 深圳市沃尔核材股份有限公司 | Heat-shrinkable tube expansion internal pressure automatic control system and heat-shrinkable tube expansion system |
| CN104175560A (en) * | 2014-07-18 | 2014-12-03 | 深圳市沃尔核材股份有限公司 | Production system and production method of flat-shaped heat shrink pipe |
| CN105904713A (en) * | 2016-04-20 | 2016-08-31 | 上海骅骝电子科技有限公司 | Intelligent heat insulation system for oil expansion machine |
| CN104175560B (en) * | 2014-07-18 | 2016-11-30 | 深圳市沃尔核材股份有限公司 | The production system of a kind of flat-shaped heat-shrink tube and production method thereof |
| CN110625918A (en) * | 2018-06-21 | 2019-12-31 | 江苏沃杰高分子材料有限公司 | Novel expanding machine |
| CN112140517A (en) * | 2020-09-01 | 2020-12-29 | 深圳市沃尔核材股份有限公司 | Nuclear power pipe expanding equipment and nuclear power pipe manufacturing system |
| CN115091733A (en) * | 2022-06-29 | 2022-09-23 | 长园电子（东莞）有限公司 | Expansion method of high-crosslinking-degree PET (polyethylene terephthalate) heat-shrinkable tube |
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| JPH11277626A (en) * | 1998-03-31 | 1999-10-12 | Toyo Plastic Seiko Kk | Method and apparatus for manufacture of heat-shrinkable tube |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920560A (en) * | 2010-07-21 | 2010-12-22 | 黄山金马股份有限公司 | Shrinkable tube reshaping device |
| CN101920560B (en) * | 2010-07-21 | 2013-01-09 | 黄山金马股份有限公司 | Shrinkable tube reshaping device |
| CN102794905A (en) * | 2012-08-06 | 2012-11-28 | 深圳市沃尔核材股份有限公司 | Heat-shrinkable tube expansion internal pressure automatic control system and heat-shrinkable tube expansion system |
| CN102794905B (en) * | 2012-08-06 | 2014-09-03 | 深圳市沃尔核材股份有限公司 | Heat-shrinkable tube expansion internal pressure automatic control system and heat-shrinkable tube expansion system |
| CN104175560A (en) * | 2014-07-18 | 2014-12-03 | 深圳市沃尔核材股份有限公司 | Production system and production method of flat-shaped heat shrink pipe |
| CN104175560B (en) * | 2014-07-18 | 2016-11-30 | 深圳市沃尔核材股份有限公司 | The production system of a kind of flat-shaped heat-shrink tube and production method thereof |
| CN105904713A (en) * | 2016-04-20 | 2016-08-31 | 上海骅骝电子科技有限公司 | Intelligent heat insulation system for oil expansion machine |
| CN110625918A (en) * | 2018-06-21 | 2019-12-31 | 江苏沃杰高分子材料有限公司 | Novel expanding machine |
| CN112140517A (en) * | 2020-09-01 | 2020-12-29 | 深圳市沃尔核材股份有限公司 | Nuclear power pipe expanding equipment and nuclear power pipe manufacturing system |
| CN115091733A (en) * | 2022-06-29 | 2022-09-23 | 长园电子（东莞）有限公司 | Expansion method of high-crosslinking-degree PET (polyethylene terephthalate) heat-shrinkable tube |
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| Publication number | Publication date |
|---|---|
| CN101612790B (en) | 2013-07-17 |
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