CN102601915B - Injection moulding system - Google Patents
Injection moulding system Download PDFInfo
- Publication number
- CN102601915B CN102601915B CN201110065461.3A CN201110065461A CN102601915B CN 102601915 B CN102601915 B CN 102601915B CN 201110065461 A CN201110065461 A CN 201110065461A CN 102601915 B CN102601915 B CN 102601915B
- Authority
- CN
- China
- Prior art keywords
- flange part
- medium
- thermal
- pipe arrangement
- piping
- Prior art date
- 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.)
- Active
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an injection moulding system, which can prevent chapping of a joint part between a flange part and a tube part of a tube and raise reliability. Annular plates (170,170) for connecting flange parts (112,122) of tube members (110,120) form a ring; the annular plates (170,170) are not in contact with the connecting flange parts (112,122) but are provided with a thermal-protective coating formed by air between the annular plates (170,170) and tube bodies (111,121). Accordingly, the tube members (110,120) and the annular plates (170,170) for connecting the tube members (110,120) are hard for performing thermal transmission, which can restrain the thermal influence caused by the annular plates (170,170). In addition, when the flange parts (112,122) perform thermal expansion and contract, sliding is generated between the flange parts (112,122) and an annular plate (170).
Description
Technical field
The present invention relates to the injection molding forming system of carrying out injection molding forming while using water, steam to carry out heating cooling to mould.
Background technology
In the injection fillers operation of injection machine, the surface of the molten resin of filling in the die cavity of mould from injection device is from the moment rapid solidification contacted with the cavity surface of mould.Now, insufficient relative to the transfer printing of the cavity surface of the mould of formed products, and, sometimes there is on formed products surface the defect etc. being called as weld mark, filamentary silver (silver-colored shape).
In order to prevent above-mentioned defect, improve the quality of formed products, proposition has following manufacturing process: in injection fillers, pressurize, cooling, this series of operation of die opening and closing, heat medium is supplied during before starting potting resin to the thermal medium path of mould, by mold heated, after beginning potting resin through fix time to supply cooling medium during before die sinking, by mold cools down (for example, referring to patent document 1).Thus; the solidification on delayed resin surface can be carried out to the mold filling molten resin of the temperature more than heat distortion temperature being heated to resin in advance; after potting resin; die sinking can be carried out after below mold cools down to the vitrification point or heat distortion temperature of resin, thus the generation of defect as described above can be suppressed.
Patent document 1: Japanese Unexamined Patent Publication 2006-110905 publication
But, in the injection machine possessing heating cooling body as described above, usually return pipe arrangement and thermotropism medium supply apparatus circulation from mould through what share through the heat medium of mould and cooling medium.What share at this returns in pipe arrangement, due to the cooling medium alternately flowing of the heat medium of high temperature and low temperature, therefore when the switching of thermal medium, produces variations in temperature in the part etc. of the joint of the tube of the flange part be connected to each other by pipe arrangement and pipe arrangement.The joint of usual flange part and the tube of pipe arrangement is mostly integrated by weld etc., but produce thermal stress due to above-mentioned variations in temperature in the welding position of connector portions, because situation is different, there is generation be full of cracks, heat medium or cooling medium and leak such problem.When heat medium or cold and hot dielectric leakage, hinder stable shaping running, and equipment gets rusty or produces fault, when the dielectric leakage of especially high temperature, large impact is brought on the security of surrounding.
In the tube and flange part of pipe arrangement, the wall thickness of such as tube is the thin-walled of 2.8mm, relative to this, flange part is in order to use as the connecting structure component for being linked each other by bolt etc. by pipe arrangement, make pipe arrangement can have enough rigidity each other and link, and make flange part be formed as radial wall thickness to be namely about 45mm and the thickness of thickness pipe arrangement continuous print direction and flange is the heavy wall size of 16mm from the thickness of the part of lip diameter removing pipe arrangement internal diameter.Therefore, large at the size difference of tube and flange part, thermal capacity produces larger difference.That is, because of the temperature by the heat medium in pipe arrangement or cooling medium, temperature easily changes the tube that wall thickness is little, in contrast, large and thermal capacity the is large flange part temperature of wall thickness is difficult to rise, and temperature is difficult to decline, and therefore the variation speed of temperature is slow.Consequently, easily temperature difference is produced at tube and flange part.
In a mold, in each injection molding forming cycle of injection molding forming of carrying out product, the heating undertaken by heat medium and the cooling undertaken by cooling medium is repeatedly carried out.When in order to produce multiple product continuously, when repeatedly carrying out the multiple injection mould-forming cycle, different from the degree of the dilation that flange part causes because of heat at the tube of pipe arrangement, therefore there is thermal stress in the joint action of tube and flange part, consequently on joint, produce be full of cracks etc.When waiting tube is integrated with flange part especially by welding, the heat that tube accepts is seized by the flange part that thermal capacity is large, tube and flange part temperature difference become greatly, above easily produce the be full of cracks caused by thermal stress at the weld part had a common boundary as temperature (connector portions).
Summary of the invention
The present invention is based on the problem of such technology and propose, its object is to provide a kind of injection molding forming system, even if thus repeatedly carry out heating cooling, also can prevent the flange part of pipe arrangement and the blank area of tube from producing and chap, can reliability be improved.
The feature of the injection molding forming system of the present invention proposed under above-mentioned purpose is to possess: injection machine, and it possesses the injection device of the mold closing mechanism of opening and closing mould and the cavity injection moulding material to mould, heat medium feedway, it is to the thermal medium path supply heat medium formed in a mold, for heating die cavity, cooling medium feedway, its thermotropism medium channel supply cooling medium, for cooling die cavity, heating cooling controller, the heat medium in its control heat medium feedway, cooling medium feedway, the supply of cooling medium, first shares pipe arrangement, and it is for sending heat medium or cooling medium into thermal medium path from heat medium feedway or cooling medium feedway, second shares pipe arrangement, its for through thermal medium path to heat medium feedway, cooling medium feedway or drainage path return, wherein, the first shared pipe arrangement sharing pipe arrangement and the second at least one party shared in pipe arrangement is formed by the end at tubular body being possessed the multiple link of piping-member of flange part, injection molding forming system has heat insulation structural portion, this heat insulation structural portion is for suppressing in multiple piping-member linking portion each other, the thermal stress produced between flange part and tubular body, this heat insulation structural portion comprises: the plate of a pair ring-type, they are configured to the flange part of piping-member opposite one another to sandwich each other, and there is the internal diameter larger than the external diameter of the tubular body of piping-member, clamp structure, its outer circumferential side at flange part is by secured to one another for the plate of a pair ring-type.
In such heat insulation structural portion, the plate of ring-type is not fastening with flange part one, but sandwiches flange part at the outer circumferential side of flange part each other by the plate of a pair ring-type and link.Therefore, flange part is when carrying out thermal expansion and shrinking, and when radially dilation, the plate of ring-type can not the distortion in limit flange portion securely, allows slip, therefore, it is possible to eliminate thermal stress between flange part and the plate of ring-type.
In addition, the contact surface (nipping surface) of the plate of flange part and ring-type, usually due to coarse and rise and fall instead of horizontal frontal plane, has small concavo-convex.That is, in this contact surface, opposed small protuberance is only point cantact each other instead of contacts by entire surface.Therefore, position beyond the protuberance of the contact in nipping surface exist and Metal Phase than pyroconductivity the fully low and air layer that heat-blocking action is large, thus can by heat insulation for the plate of flange part and ring-type.Thereby, it is possible to the temperature difference of the flange part suppressing the heat of flange part to be seized by the plate of ring-type and cause and tubular body.
Further, the plate due to ring-type has the internal diameter larger than the external diameter of tubular body, does not therefore contact with the main part periphery of tubular body, or only localized contact, there is the thermal insulation layer formed by air between itself and tubular body.Thus, piping-member and the plate of ring-type they interlinked are difficult to carry out heat trnasfer, can suppress consequent heat affecting.In addition, the internal diameter of preferred annular plate is larger than tubular body external diameter during tubular body thermal expansion.Like this, even if when tubular body thermal expansion, the peripheral part of tube does not also contact with the inner peripheral portion of annular plate, therefore, it is possible to the thermal stress effectively preventing the heat of tubular body from being seized by annular plate and produce.
Therefore, use fastening structure as follows, in this fastening structure, for not being flange part by bolt etc. by connecting structure component connected to each other for pipe arrangement, and be the plate of ring-type, and the large and plate of the ring-type that thermal capacity is large of the size of the flange part possessed in one end of piping-member when being flange for being entered by the plate holder of ring-type and the little piping-member of thermal capacity are not consubstantiality, thus the slip of fixed part can be allowed, and flange part and fastening part can be formed as heat insulation structural, therefore, it is possible to the generation of the be full of cracks in the pipe-fitting joint portion preventing thermal stress from causing.
At this, in preferred heat insulation structural portion, the thickness t1 of flange part and the thickness t2 of tubular body meets t2≤t1≤2 × t2.By reducing the difference of the thermal capacity in flange part and tubular body like this, the difference of flange part when can suppress the circulation because of heat medium or cooling medium and produce variations in temperature and the temperature variation curve of tubular body.
Further, such injection molding forming system of the present invention when the temperature of the heat medium supplied to shared pipe arrangement be 110 ~ 250 DEG C, the temperature of cooling medium that supplies to shared pipe arrangement is 0 ~ 80 DEG C, the medium supplied to shared pipe arrangement is switched to cooling medium from heat medium time the temperature changing speed of mold cavity near surface be 0.5 ~ 10 DEG C/sec, time required for the shot mould-forming cycle is effective especially when being 30 ~ 120 seconds such, shared pipe arrangement variations in temperature fiercenesses.
So, in the piping-member that the heat medium of high temperature and the cooling medium of low temperature alternately flow, the fastening structure portion of piping-member is formed as fastening structure as follows, namely, at least be separated into piping-member and clamp structure, piping-member is formed as the tubular body being at one end provided with flange part, clamp structure is formed as the plate of a pair ring-type with the internal diameter large and less than the external diameter of flange part than the main part external diameter of the tubular body of piping-member, and by the plate of ring-type, the outer circumferential side of the flange part of tubular body opposite one another sandwiched each other and link piping-member, thus can by piping-member and clamp structure heat insulation, make the variations in temperature homogenising of piping-member.
Invention effect
According to the present invention, flange part when carrying out thermal expansion and shrinking, radially dilation, and when producing the distortion of flange part because of dilation, producing between flange part and the plate of ring-type and sliding.Thus, the distortion of flange part can not be hindered, can prevent when causing distortion because of heat stress to grade concentrated situation at the weld part of flange part and tubular body.
In addition, owing to there is the thermal insulation layer formed by air between the plate of ring-type and flange part or tubular body, therefore the heat of piping-member is seized by the plate of ring-type and local becomes the partial disappearance of low temperature, therefore, it is possible to suppress thermal stress.
In addition, by the thickness of the thickness and tubular body that suitably set flange part, the difference of the thermal capacity of flange part and tubular body is diminished, flange part when can suppress the circulation because of heat medium or cooling medium thus and produce variations in temperature and the temperature difference of tubular body.
Therefore, even if when the variations in temperature fierceness of pipe arrangement, also can prevent from producing situation about chapping in the part of the flange part of pipe arrangement and the joint of tube, can reliability be improved.
Accompanying drawing explanation
Fig. 1 is the integrally-built figure of the injection machine representing present embodiment.
Fig. 2 is the figure of the structure of the temperature adjustment represented for carrying out mould.
Fig. 3 is the figure representing the example returning to pipe arrangement portion.
Fig. 4 is the sectional view of the structure representing pipe arrangement linking part each other.
Fig. 5 is the sectional view of another example of the structure representing pipe arrangement linking part each other.
Fig. 6 is the sectional view of the structure of the pipe arrangement linking part each other represented in comparative example.
Symbol description:
10 ... injection machine
20 ... injecting unit (injection device)
21 ... injection cylinder
30 ... thermal medium path
32I ... thermal medium supply pipe
32O ... thermal medium discharge pipe
33 ... heat medium feedway
34 ... cooling medium feedway
50 ... injection molding forming control device
60 ... temperature adjustment device
70 ... die temperature control device (heating cooling controller)
100 ... pipe arrangement portion (second shares pipe arrangement)
110,120 ... piping-member
111,121 ... tubular body
112,122 ... flange part
170 ... annular plate
171 ... seal
172 ... bolt and nut (clamp structure)
A ... thermal insulation layer
W ... weld part
Detailed description of the invention
Below, based on embodiment shown in the drawings, the present invention is explained.
Fig. 1 is the figure of brief configuration of the injection machine 10 for illustration of the injecting systems forming present embodiment.
As shown in Figure 1, in the mold closing mechanism of injection machine 10, be fixedly installed fixed mould backing plate 12 on the base 11, fixed mould backing plate 12 is provided with fixed side mold (mould) 13.The drawer at movable side mould (mould) 14 opposed with fixed side mold 13 is arranged on the moveable die backing plate 15 arranged opposite with fixed mould backing plate 12.Moveable die backing plate 15 is guided by the guide rail 16 set up on the base 11, can be opposed with fixed mould backing plate 12 and move via linear bearing.Electric ball screw 17 is used in movement for the moveable die backing plate 15 of die opening and closing.In addition, not shown hydraulic cylinder can be used in the movement of moveable die backing plate 15.
Multiple pull bar 18 is arranged to directly link with the slide 19 that slides in the multiple closing liquid cylinder pressure 12a be built in fixed mould backing plate 12.The through hole of the through moveable die backing plate 15 in leading section of each pull bar 18.Be formed with thread groove 18a in the leading section of pull bar 18, the halfnut 18b configured in the mould opposition side of moveable die backing plate 15 engages with this thread groove 18a, thus the lead of fixing restriction pull bar 18.
Injecting unit (injection device) 20 is motorized motions mode or hydraulic driving mode, is provided with the framework 21a with injection cylinder 21 one in the injection cylinder 21 possessing the nozzle abutted with the resin injection mouth of fixed side mold 13.On this framework 21a, the center line of injection cylinder 21 bilateral symmetry be provided with a pair injection drive servomotor 22,22, ballscrew shaft 23,23 with inject drive the output shaft of servomotor 22,22 directly to link.Ballscrew shaft 23,23 is screwed with a pair ball-screw nut 25,25 be arranged on movable frame 24.Servomotor 22,22 synchronous rotary is driven to drive by a pair injection, injection screw 21b forward-reverse vertically in injection cylinder 21.
The injection screw 21b of injection cylinder 21 is driven by the injection screw rotary driving motor 26 be arranged on movable frame 24 and rotates, and the rotation carrying out the resin in injection cylinder 21 is sent and plasticising.
Injection molding forming control device 50 is oily to closing liquid cylinder pressure 12a transportation work according to the program of forming process, injection to injecting unit 20 drives servomotor 22,22 to carry electric current, make injection screw 21b forward-reverse, and carry electric current to the injection screw rotary driving motor 26 of injection screw 21b, indicate the plasticising of resin.
Injecting unit 20 is to injecting molten resin in the mold cavity formed by fixed side mold 13 and drawer at movable side mould 14 matched moulds.After formed products cooling curing, drawer at movable side mould 14 is removed and is combined with the matched moulds of fixed side mold 13, and drawer at movable side mould 14 leaves fixed side mold 13 by the action of mobile electric ball screw 17, thus takes out formed products.
Fixed side mold 13, drawer at movable side mould 14 are formed the thermal medium path 30,31 for heating die surface, cooling.Thermal medium path 30,31 is formed in as far as possible close to the position of mold cavity, with quick transferring heat, carries out rapidly heating cooling to mould cavity surface.Further, be connected at this thermal medium path 30,31: for sending into the thermal medium supply pipe 32I of thermal medium externally to thermal medium path 30,31; For externally discharging the thermal medium discharge pipe 32O of thermal medium from thermal medium path 30,31.
As shown in Figure 2, be connected with at thermal medium supply pipe 32I: the heat medium feedway 33 of heat medium such as supply steam, pressurized hot water etc.; For the cooling medium feedway 34 of the cooling mediums such as feedwater, air.
Heat medium is sent into thermal medium path 30,31 by thermal medium supply pipe 32I by not shown pump by heat medium feedway 33, and the heat medium that have passed through thermal medium path 30,31 is circulated to heat medium feedway 33 by thermal medium discharge pipe 32O.Now, heat medium can not circulate to heat medium feedway, and never illustrated drainage path is externally discharged.
Cooling medium is sent into thermal medium path 30,31 by thermal medium supply pipe 32I by not shown pump by cooling medium feedway 34, and the cooling medium that have passed through thermal medium path 30,31 is circulated to cooling medium feedway 34 by thermal medium discharge pipe 32O.
In addition, thermal medium supply pipe 32I and thermal medium discharge pipe 32O is the shared pipe arrangement that heat medium and cooling medium replace or circulate simultaneously.
Above-mentioned heat medium feedway 33, cooling medium feedway 34 are connected with temperature adjustment device 60.Be provided with can carry out the open and close valve (not shown) of opening and closing, for switching the thermal medium supplied to thermal medium supply pipe 32I to from heat medium feedway 33, the heat medium of cooling medium feedway 34 supply, the feed tube of cooling medium respectively at temperature adjustment device 60.
Each open and close valve of temperature adjustment device 60 by die temperature control device (heating cooling controller) 70, and based on its opening and closing of predetermined programme-control, switches heat medium, cooling medium cuts off to the supply of thermal medium supply pipe 32I.Namely, when heating fixed side mold 13, drawer at movable side mould 14, heat medium after being heated by heat medium feedway 33 is sent into thermal medium supply pipe 32I, when cooling fixed side mold 13, drawer at movable side mould 14, the cooling medium supplied from cooling medium feedway 34 is sent into thermal medium supply pipe 32I.
As shown in Figure 1 and Figure 2, connect with the cavity surface of fixed side mold 13, drawer at movable side mould 14 and be configured with mold temperature sensor 40.The signal of the mold temperature detected by mold temperature sensor 40 is carried to die temperature control device (heating cooling controller) 70.
In addition, as shown in Figure 2, the heat medium temperature sensors 41 such as the thermocouple of the temperature for the thermal medium in detector tube are provided with at thermal medium supply pipe 32, for detecting the testing agency for the state of the thermal medium in detector tube such as pressure sensor 42 of the pressure of thermal medium.In this case, the temperature of thermal medium detected by above-mentioned heat medium temperature sensor 41, pressure sensor 42, the signal of pressure are same with the signal of the mold temperature detected by mold temperature sensor 40 to be carried to die temperature control device 70.
In die temperature control device 70, based on the mold temperature detected by mold temperature sensor 40, or at use heat medium temperature sensor 41, when pressure sensor 42, except the mold temperature detected based on mold temperature sensor 40, also based on by heat medium temperature sensor 41, the temperature of the thermal medium that pressure sensor 42 detects, pressure, carry out control temperature adjusting device 60, make heat medium feedway 33, open and close valve (not shown) opening and closing of cooling medium feedway 34, control the heat medium to thermal medium supply pipe 32I, the supply sequential of cooling medium.
In a series of injection molding forming cycle, die temperature control device 70 performs the process determined based on the computer program imported in advance, control the supply of the heat medium to thermal medium supply pipe 32I, cooling medium, carry out temperature shown below thus and control.
In the operation of boosting after mold closing, by die temperature control device 70 control temperature adjusting device 60, the heat medium after being heated is sent into thermal medium supply pipe 32I, fixed side mold 13, drawer at movable side mould 14 are heated by heat medium feedway 33.At this, preferred heat medium uses the medium of 110 ~ 250 DEG C.
Then, after heating fixed side mold 13, drawer at movable side mould 14, the mold cavity injecting molten resin to being formed by fixed side mold 13 and drawer at movable side mould 14 matched moulds is started.In injection or after injection, stop the supply to the heat medium of thermal medium supply pipe 32I from thermal medium feedway 33.The supply of heat medium stops being undertaken by die temperature control device 70 control temperature adjusting device 60.
At the end of the injection of resin, the pressurize in mold cavity can be carried out.In addition, during injection ~ pressurize, the temperature of fixed side mold 13, drawer at movable side mould 14 both can supply cooling medium at once after the supply of heat medium stops, also cooling medium can not be supplied at once, and air supply or do not supply any medium, make mold cavity form nature heat release state and be incubated or cool gradually.
Then, the refrigerating work procedure of fixed side mold 13, drawer at movable side mould 14 is described.For the cooling of fixed side mold 13, drawer at movable side mould 14, by die temperature control device 70 control temperature adjusting device 60, the cooling medium supplied from cooling medium feedway 34 is sent into thermal medium supply pipe 32I.At this, preferred cooling medium uses the cooling medium of 0 ~ 80 DEG C.
By sending into cooling medium, fixed side mold 13, drawer at movable side mould 14 are cooled fast.Now, the speed of the variations in temperature stopped near die surface when switching to the supply of cooling medium from the supply of heat medium is 0.5 ~ 10 DEG C/sec.If the temperature of fixed side mold 13, drawer at movable side mould 14 reduces, then by die temperature control device 70 control temperature adjusting device 60, stop cooling medium to the supply of thermal medium supply pipe 32I.
At resin cooling curing, in mold cavity after forming shaped product, drawer at movable side mould 14 is removed and is combined and die sinking with the matched moulds of fixed side mold 13.Then, and then make drawer at movable side mould 14 leave fixed side mold 13 by the action of mobile electric ball screw 17, take out formed products.
Afterwards, by repeating the injection molding forming cycle similar to the above, can injection molding forming formed products and producing in turn.When repeating the injection molding forming cycle similar to the above, restart the supply of heat medium, but now, the speed of variations in temperature when switching to heat medium from cooling medium is 0.5 ~ 10 DEG C/sec.At this, the preferred shot mould-forming cycle is 30 ~ 120 seconds.
At this, the thermal medium discharge pipe 32O for making the heat medium after thermal medium path 30,31, cooling medium circulate to cooling medium feedway 34 possesses the pipe arrangement portion that returns (second shares pipe arrangement) 100 shown below.
As shown in Figure 3, return to pipe arrangement portion 100 to possess: the main pipe arrangement 101 thermal medium sent from thermal medium path 30,31 directly being sent into heat medium feedway 33, cooling medium feedway 34; When the thermal medium sent from thermal medium path 30,31 is steam, cooling at least partially of steam is made the condensing engine 102 of its condensing; From main pipe arrangement 101 to condensing engine 102 by the branched pipe 103 of thermal medium branch.
Main pipe arrangement 101 is provided with automatic on/off valve 104, the control undertaken by die temperature control device 70, automatically adjustment controls the opening and closing aperture of automatic on/off valve 104.
Branched pipe 103 branches into two pipelines 103A, 103B at the upstream side of condensing engine 102.A pipeline 103A is provided with manual open and close valve 105, and it is opened usually all the time.
Another pipeline 103B is provided with automatic on/off valve 106, the control undertaken by die temperature control device 70, automatically can adjusts the opening and closing aperture controlling automatic on/off valve 106, thus the pressure of the steam sending into condensing engine 102 can be adjusted.
Return in pipe arrangement portion 100 above-mentioned, automatic on/off valve 104,106 as the piping-member 110 of specific length a part and load the pars intermedia of tubular body 111.Piping-member 110 is provided integrally with the flange part 112 of the annulus tabular of giving prominence to towards side, periphery from tubular body 111 in the end of tubular body 111.
The flange part 112 at the two ends of such automatic on/off valve 104,106 links with at the flange part 122 forming main pipe arrangement 101, the end of piping-member 120 of pipeline 103B of branched pipe 103 is arranged.
Below, such piping-member 110 and the structure in the heat insulation structural portion of the linking part of piping-member 120 are described.
As shown in Figure 4, the flange part 112,122 of piping-member 110,120 uses annular plate 170 to connect each other.
The flange part 112,122 of piping-member 110,120 is opposed across the seal 171 of ring-type each other.
Further, clip flange part 112,122 and be configured with annular plate 170,170 in its both sides.Annular plate 170 is the ring-type that internal diameter is less than the external diameter of flange part 112,122 and larger than the external diameter of the tubular body 111,121 of piping-member 110,120, and is arranged to not contact with tubular body 111,121.Above-mentioned annular plate 170,170 at its peripheral part by bolt and nut (clamp structure) 172,172 fastening.In addition, annular plate 170, except illustrated integrated ring shape, as long as split ring shape etc. sandwich the shape of flange part, then can be any shape.In addition, although directly sandwich flange part 112,122 by annular plate 170 in the diagram, also heat-barrier material can be inserted at flange part 112,122 and the middle of annular plate 170.As heat-barrier material, can be heat-barrier material, resin system heat-barrier material for fiber system heat-barrier material, foaming, can also be vacuum heat insulation material etc.Or various heat-barrier material can also be combinationally used.
At this, be t1 at the thickness of flange part 112,122, when the thickness of tubular body 111,121 is t2, be preferably set to t2≤t1≤2 × t2.
In addition, preferred piping-member 110,120 is formed by steel such as SUS304.Annular plate 170,170 both can be formed by with piping-member 110,120 same materials, also can be formed by material, the such as SUS420J2 etc. lower than piping-member 110,120 thermal conductivity.
In addition, the contact area of the flange part 112,122 of annular plate 170,170 and piping-member 110,120, by making surface roughness large or formed concavo-convex, is reduced in the surface of annular plate 170.Thereby, it is possible to increase the effect of heat insulation between annular plate 170,170 and the flange part 112,122 of piping-member 110,120.
In such a configuration, by making the flange part 112 of piping-member 110,120,122 annular plates 170,170 connected to each other be formed as ring-type, thus annular plate 170,170 does not contact with tubular body 111,121, between itself and tubular body 111,121, there is the thermal insulation layer A formed by air.Thus, piping-member 110,120 and be difficult to carry out heat trnasfer by their annular plates 170,170 connected to each other, can suppress the heat affecting that annular plate 170,170 produces.
And, when by making the roughness on the surface of annular plate 170 large or formed concavo-convex, when reducing the contact area of flange part 112,122 of annular plate 170,170 and piping-member 110,120, the heat transfer between the flange part 112,122 of annular plate 170,170 and piping-member 110,120 becomes and is difficult to carry out.The heat affecting that annular plate 170,170 produces can be suppressed thus.
Further, flange part 112,122 when carrying out thermal expansion and shrinking, radially dilation, and when producing the distortion of the flange part 112,122 that causes of dilation, producing between flange part 112,122 and annular plate 170 and sliding.Thus, do not hinder the distortion of flange part 112,122, can suppress when the distortion caused by heat in flange part 112,122 or the thermal stress between flange part 112,122 and tubular body 111,121.
Further, by suitably setting thickness t1, t2 of flange part 112,122 and tubular body 111,121 in scope as described above, the heat capacity difference of flange part 112,122 and tubular body 111,121 can be made to diminish and suppress temperature difference.Thus, also can suppress when the distortion caused by heat in flange part 112,122 or the thermal stress between flange part 112,122 and tubular body 111,121.
Therefore, it is possible to suppress the situation producing temperature difference on the tubular body 111,121 and flange part 112,122 of the piping-member 110,120 becoming to be integrated.In addition, flange part 112,122 can be arranged in any modes such as drawing processing or machining relative to piping-member 110,120.Especially, when the thickness t1 of flange part 112, the 122 and thickness t2 of tubular body meets t2≤t1≤2 × t2, flange part 112,122 can be set by being welded on piping-member 110,120.Consequently, can prevent there is thermal stress because of heat affecting at the tubular body 111,121 of piping-member and the joint action of flange part 112,122, thus make joint produce the situations such as be full of cracks.Thereby, it is possible to improve the reliability of the linking part of piping-member 110 and piping-member 120.
In addition, the flange part 112,122 of piping-member 110,120 can be arranged by any way relative to tubular body 111,121.Such as, as shown in Figure 5, can by flange part 112,122 and tubular body 111,121 integrated and component that is that obtain forms piping-member 110,120 at weld part W by welding with other tubular body 115,125.
Under these circumstances, by fully leaving the flange part 112,122 that thermal capacity easily becomes large, and weld part W is set in the position not by the heat affecting of flange part 112,122, and even if tubular body 111,121 is Welding Structure, the situation that also can prevent that the weld part W because of thermal stress from breaking etc.
But, in the injection machine 10 adopting the structure shown in the respective embodiments described above, also can adopt following such structure.
That is, as shown in Figure 3, the pipeline 103B being provided with automatic on/off valve 106 is connected with pipeline 103A with the union elbow 180 of the mode orthogonal relative to pipeline 103A by T font.Further, pipeline 103A is formed with helically and revolves the circle portion 181 turned around in the both sides of the union elbow 180 of T font.When the pipeline 103B being provided with automatic on/off valve 106 is flexible along its axis direction, circle portion 181 closes in the mode making its enlarged-diameter and reduce or opens and stretch.Thereby, it is possible to allow the distortion that the thermal expansion of pipeline 103B causes.
In addition, although not shown, the loop-shaped pipe arrangement same with circle portion 181 also can be suitable at bend or Super long tube portion.The thermal expansion amount caused because of variations in temperature due to Super long tube portion or thermal shrinking quantity large, therefore when using simple straight line pipe arrangement, will press wide between pipe-fitting joint portion or draw in and produce thermal stress.For this situation, if use loop-shaped pipe arrangement, then, when Super long tube is flexible in the axial direction, the mode that loop-shaped pipe arrangement can reduce with its enlarged-diameter is closed or is opened and carries out stretching relaxing thermal stress.Also there is thermal expansion or thermal contraction that the variations in temperature because of pipe arrangement causes in bend and angle of bend expands or reduces, thus produce the situation of thermal stress.For this situation, if use loop-shaped pipe arrangement, then the thermal stress relaxing bend is closed or opened to the mode that loop-shaped pipe arrangement also can reduce with its enlarged-diameter.
Thereby, it is possible to suppress the strain be subject near the linking part of tubular body 111,121 and flange part 112,122.
In addition, even if possess the structure shown in each embodiment as described above, also may produce in pipe arrangement portion 100 and chap and leak of liquid.
In this case, possess liquid leakage sensor 190, when the leakage by liquid leakage sensor 190 tracer liquid, can be controlled by injecting unit 20, to cut off the supply of thermal medium to the thermal medium path 30,31 of injecting unit 20.
At this, as liquid leakage sensor 190, humidity sensor 191 can be possessed easy because thermal stress produces damaged near sites.Drain pan 192 can also be set in the below of the device of injecting unit 20, in this drain pan 192, possess water leak sensor.
In addition, in the above-described embodiment, enumerate and be suitable for example of the present invention forming the second linking portion sharing the piping-member 110,120 of pipe arrangement that the thermal medium that makes to discharge from mould returns to heat medium feedway, cooling medium feedway or drainage path, but linking portion (not shown) on shared pipe arrangement supply to mould from heat medium feedway or cooling medium feedway by thermal medium (first shared pipe arrangement) also can be suitable for the present invention.Further, for the structure beyond the linking portion of injection machine, can also for the structure beyond above-mentioned listing.
In addition, only otherwise depart from purport of the present invention, the structure selecting to enumerate in above-mentioned embodiment can be accepted or rejected, or suitably change to other structure.
[embodiment 1]
At this, because the effect produced the structure of above-mentioned present embodiment is verified, therefore its result is shown.
(embodiment)
Linking part as the piping-member of identifying object is the structure shown in Fig. 4, and the thickness t1 of flange part 112,122 is 2.8mm, and the thickness t2 of tubular body 111,121 is 2.8mm, and caliber is 25mm.
(comparative example 1)
In contrast, the connecting portion of the structure shown in set-up dirgram 6 (a) is as comparison other.That is, be the structure of the linking part of piping-member in the past, flange part 201,201 is directly linked each other by bolt and nut 202.At this, the thickness t1 ' of flange part 201 is 14mm, and the thickness t2 ' of tubular body 203 is 2.8mm, and caliber is 25mm.
At this, the material of the piping-member of embodiment, comparative example is all SUS304.
(comparative example 2)
Further, the connecting portion of the structure shown in set-up dirgram 6 (b) is as comparison other.It is except the structure shown in Fig. 6 (a), is also provided with the sleeve 205 of the tubular be made up of the PFA (tetrafluoroethene perfluoroalkyl vinyl ether copolymer) as resin system heat-barrier material at the linking part of piping-member.The thickness of sleeve 205 is 2mm, length L is 30mm.
In above-mentioned such embodiment, comparative example 1,2, the heating undertaken by repeatedly carrying out making for 60 seconds the steam of 190 DEG C to circulate, the current of 30 DEG C within 60 seconds, are made to lead to and this cycle of overall 120 seconds of cooling of carrying out, the amplitude of the stress that the piping-member in the X portion utilizing deformation instrument to measure in figure 6 produces.
Its result is, in the comparative example 1 directly linked each other by bolt and nut 202 by flange part 201,201, stress amplitude is 438MPa, and in the comparative example 2 being provided with the sleeve 205 formed by heat-barrier material, stress amplitude is 262MPa.
In contrast, confirm in the embodiment 1 of the structure being equivalent to present embodiment, stress amplitude is 182MPa, even if do not possess heat insulation material, by the structure of present embodiment, and the stress that the linking part that also can be reduced in piping-member significantly produces.
Claims (2)
1. an injection molding forming system, is characterized in that, possesses:
Injection machine, it possesses the injection device of the mold closing mechanism of opening and closing mould and the cavity injection moulding material to described mould;
Heat medium feedway, it is to the thermal medium path supply heat medium formed in the mold, for the described die cavity of heating;
Cooling medium feedway, it is to described thermal medium path supply cooling medium, for the described die cavity of cooling;
Heating cooling controller, it controls the supply of the described heat medium in described heat medium feedway, described cooling medium feedway, described cooling medium;
First shares pipe arrangement, and it is for sending described heat medium or described cooling medium into described thermal medium path from described heat medium feedway or described cooling medium feedway;
Second shares pipe arrangement, and it is for returning to described heat medium feedway, described cooling medium feedway or drainage path through described thermal medium path,
The described first shared pipe arrangement sharing pipe arrangement and the described second at least one party shared in pipe arrangement is formed by the end at tubular body being possessed the multiple link of piping-member of flange part,
Described injection molding forming system has heat insulation structural portion, and this heat insulation structural portion is for suppressing the thermal stress produced between described flange part and described tubular body in described multiple piping-member linking portion each other, and described heat insulation structural portion comprises:
The plate of a pair ring-type, they are configured to the described flange part of described piping-member opposite one another to sandwich each other, and have the internal diameter larger than the external diameter of the described tubular body of described piping-member;
Clamp structure, its outer circumferential side at described flange part by secured to one another for the plate of ring-type described in a pair,
The plate of described ring-type is formed by the material that thermal conductivity is lower than described piping-member,
Further, be configured with the seal of ring-type between described flange part opposite one another, the external diameter of described seal is less than the external diameter of described flange part,
Described tubular body and described flange part are made up of component independently,
Further, in described heat insulation structural portion, the thickness t1 of described flange part and the thickness t2 of described tubular body meets t2≤t1≤2 × t2.
2. injection molding forming system according to claim 1, is characterized in that,
Temperature to the described heat medium of described shared pipe arrangement supply is 110 ~ 250 DEG C,
Temperature to the described cooling medium of described shared pipe arrangement supply is 0 ~ 80 DEG C,
The temperature changing speed of the mold cavity near surface when medium to described shared pipe arrangement supply is switched to described cooling medium from described heat medium is 0.5 ~ 10 DEG C/sec,
Time required for the shot mould-forming cycle is 30 ~ 120 seconds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-012673 | 2011-01-25 | ||
| JP2011012673A JP5709550B2 (en) | 2011-01-25 | 2011-01-25 | Injection molding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102601915A CN102601915A (en) | 2012-07-25 |
| CN102601915B true CN102601915B (en) | 2015-05-20 |
Family
ID=46519874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110065461.3A Active CN102601915B (en) | 2011-01-25 | 2011-03-11 | Injection moulding system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5709550B2 (en) |
| CN (1) | CN102601915B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071082A (en) * | 2021-03-31 | 2021-07-06 | 广州诺旗科技有限公司 | Plastic tubing cooling device that moulds plastics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119410A1 (en) * | 2008-03-24 | 2009-10-01 | 新日本製鐵株式会社 | Loose flange-type flared pipe joint and steel pipe joining method using the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11230444A (en) * | 1998-02-18 | 1999-08-27 | Mesco Inc | Joining structure of pipe for water supply |
| JP3861035B2 (en) * | 2002-08-08 | 2006-12-20 | 三菱重工業株式会社 | Pipe member joining structure and combustor fuel nozzle mounting structure using the same |
| JP2008082441A (en) * | 2006-09-27 | 2008-04-10 | Sumitomo Electric Ind Ltd | Pipe connecting structure |
| JP2007055267A (en) * | 2006-11-02 | 2007-03-08 | Mitsubishi Electric Corp | Method for producing molded article, temperature controlling device and molded article |
| JP4994916B2 (en) * | 2007-03-30 | 2012-08-08 | 三菱重工業株式会社 | Injection molding machine and injection molding method |
| CN201190863Y (en) * | 2007-10-30 | 2009-02-04 | 无锡市金龙波纹补偿器厂 | Rotating compensator |
| JP2011167925A (en) * | 2010-02-18 | 2011-09-01 | Mitsubishi Heavy Industries Plastic Technology Co Ltd | Injection molding system and piping member |
-
2011
- 2011-01-25 JP JP2011012673A patent/JP5709550B2/en active Active
- 2011-03-11 CN CN201110065461.3A patent/CN102601915B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119410A1 (en) * | 2008-03-24 | 2009-10-01 | 新日本製鐵株式会社 | Loose flange-type flared pipe joint and steel pipe joining method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012152973A (en) | 2012-08-16 |
| CN102601915A (en) | 2012-07-25 |
| JP5709550B2 (en) | 2015-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101528440B (en) | Injection molding system, computer program, method of injection molding, and injection molding machine | |
| JPWO2007034815A1 (en) | Mold, mold temperature adjusting method, mold temperature adjusting apparatus, injection molding method, injection molding machine, and thermoplastic resin sheet | |
| CN102066081B (en) | Injection molding machine and injection molding method | |
| CN101185949A (en) | Method for using numerically-controlled pipe bender to process heating constant temperature bending pipe | |
| JP4361459B2 (en) | Injection molding method and mold temperature control device for injection molding machine | |
| CN103357696A (en) | Production manufacturing process of large-diameter copper-nickel alloy seamless pipe | |
| CN108698106A (en) | Molding machine and forming method | |
| CN102601915B (en) | Injection moulding system | |
| ZA200606857B (en) | Device and method for shaping a foil strip | |
| KR20170007383A (en) | Molding System | |
| CN104526974A (en) | Semi-heating type hot runner system and working method thereof | |
| JP2017193094A (en) | Flexure processing device of thermoplastic resin tube | |
| JP2008302665A (en) | Hot runner device | |
| CN114932676B (en) | PVC-O pipe flaring device capable of automatically installing rubber ring and flaring method thereof | |
| WO2020117691A1 (en) | Multi-mold systems using a runner | |
| CN110843175A (en) | Hot runner device | |
| CN105658390A (en) | Molding machine | |
| JP4994916B2 (en) | Injection molding machine and injection molding method | |
| JP2008179016A (en) | Mold device | |
| CN107225728A (en) | Injection (mo(u)lding) machine | |
| CA2693000C (en) | Equipment and method for production of tubes of molecularly bidirected plastic | |
| CN204451060U (en) | A kind of half heated type TOP-TIP | |
| JP7055682B2 (en) | Injection molding machine | |
| JP2011167925A (en) | Injection molding system and piping member | |
| CN101811352B (en) | Manufacturing method of mold, mold dividing body and Mold |
Legal Events
| 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 |