CN101811352A - Manufacturing method of mold, mold dividing body and the Mold - Google Patents
Manufacturing method of mold, mold dividing body and the Mold Download PDFInfo
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- CN101811352A CN101811352A CN200910141103A CN200910141103A CN101811352A CN 101811352 A CN101811352 A CN 101811352A CN 200910141103 A CN200910141103 A CN 200910141103A CN 200910141103 A CN200910141103 A CN 200910141103A CN 101811352 A CN101811352 A CN 101811352A
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- mold
- dividing body
- mould
- composition surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The object of this invention is providing a fabricating method for mold, mold dividing body, mold, which can improve the product quality and improve the durability of mold. The protrusion of movable side mold layers multiple mold dividing body(81A),(81B),(81C)...along the protruded direction and joints to form a jointing surface(85), so as to form a whole body. In the jointing surface(85) , protruded strips(87), (88) are formed along the periphery edge and groove(82). Therefore, when the mold dividing bodydy(81A),(81B),(81C)... are jointed together, the periphery edge of jointing surface(85) that forms the mould form surface is reliably jointed with the edge of groove(82) that forms the passageway of heat medium.
Description
Technical field
The present invention relates to a kind of manufacture method, mold dividing body, mould of mould of injection molding machine, make water, steam as thermal medium and mould is heated/cool off and carry out injection moulding.
Background technology
In the injection filling work procedure of injection (mo(u)lding) machine, if the temperature of mould is in lower state, the surperficial snap cure of the molten resin of in the die cavity of mould, filling then.Under this situation, the cavity surface of mould is insufficient with respect to the transfer printing of moulding product, in addition, produces the defective that is called weld bond, silver-colored line on the surface of moulding product.
In order to prevent this defective, following forming method has been proposed: in a series of operation of injection filling, pressurize, cooling, die opening and closing, supply with heat medium and mould heated to the medium channel of mould during till the filling of beginning resin, from resin begin fill after through the stipulated time after till during the die sinking during supply with cooling medium and mould cooled off (for example with reference to patent documentation 1).Thus, mould till the temperature more than the heat distortion temperature that is heated to resin is in advance filled molten resin and is postponed the curing of resin surface, behind the potting resin, can can suppress above-mentioned generation of defects in that mold cools down is carried out die sinking to the glass transition temperature of resin or after below the heat distortion temperature.
Generally, in injection moulding, use thermal medium to carry out energetically under the temperature controlled situation,, seek its temperature rising/decline and promptly carry out for the shorteningization of moulding circulation.Therefore, constitute mould on baffle plate, on the composition surface of baffle plate and cavity part, form a plurality of medium channel arranged side by side by the cavity part that the mold cavity surface that forms mould is installed.
Yet, under the situation of the moulding product that partly have convex form, heating/cooling construction as convex portion, shown in Figure 10 (a), have following method: with beyond the A of convex form portion in the same manner, also on the composition surface that is installed on the baffle plate 1 with baffle plate 1, form the cavity part 2 of medium channel 3 for male portion A.
In addition, shown in Figure 10 (b), for the part beyond the A of convex form portion, will with the composition surface of baffle plate 1 on form medium channel 3 cavity part 4 be installed on the baffle plate 1, for the A of convex form portion, on baffle plate 1, form the square medium jar 5 that is positioned at the A of convex form portion, carry out temperature controlled method by making thermal medium flow into this medium jar 5.
Patent documentation 1: TOHKEMY 2005-329577 communique
Patent documentation 2: TOHKEMY 6-238728 communique
Yet, in the structure shown in Figure 10 (a), in the A of convex form portion, be difficult to cavity part 2 is mounted and fixed on the baffle plate 1.
Therefore, as described in patent documentation 2, proposed cavity part is divided into a plurality of, be installed in the scheme on the baffle plate respectively.
But have following possibility: in the part of the mutual seam of a plurality of cavity part, the boundary line occurs on mold cavity surface, heating/cooling medium medium stream internally leaks.
And then injection moulding applies the thermal stress based on heating, cooling repeatedly owing to make a plurality of products on mould.If the joint of seam is insufficient evenly, exist by engaging the bad defective that causes, then when the burden thermal stress, defective is carried out the action identical with crackle, and defective further enlarges and produces the problem of the aspects such as durability such as breakage of mould.
In addition, in the structure shown in Figure 10 (b), the part beyond the A of convex form portion and its, heating/cooling construction difference is difficult to carry out uniform heating/cooling, has problems aspect the quality that causes in the Temperature Distribution of mould.
Summary of the invention
The present invention is in view of such technical problem, and its purpose is to provide a kind of manufacture method, mold dividing body, mould of mould, improves the quality of products and also can improve the durability of mould.
The present invention under this purpose is the manufacture method that is used to be installed on the injection (mo(u)lding) machine and forms a pair of mould of moulding product by injection moulding, it is characterized in that, form protuberance on the side in a pair of mould, described protuberance is outstanding and form convex form portion on moulding product towards the opposing party's mould, and protuberance is divided into a plurality of mold dividing bodies along the projected direction of this protuberance and forms along projected direction lamination joint by making.And, when the mold dividing body that makes lamination is engaged with each other, at least one side of mold dividing body in each other composition surface, form prominent bar, so that the leading section of prominent bar touches the state of the opposing party's mold dividing body, mold dividing body is engaged with each other.
Like this, so that after the leading section of the prominent bar that forms at least one side's of mold dividing body the composition surface the state on the opposing party's the mold dividing body of touching is bonded with each other these mold dividing bodies, engage especially reliably in the part of prominent bar.
If so prominent bar is formed along the outer peripheral edges portion on the composition surface of mold dividing body, then can make the outer peripheral edges portion on mold dividing body composition surface each other, the outer surface (cavity surface) that is protuberance engages reliably, can prevent in the seam that occurs on the cavity surface between the mold dividing body.
In addition, if be used to carry out the thermal medium path that the temperature of above-mentioned mould is adjusted when being formed on injection moulding, above-mentioned prominent bar is formed along the groove that is formed on the above-mentioned composition surface, and then the bonding part only is the narrow region on every side of the part of this groove, and the precision that flushes on composition surface promotes easily.Thus, can prevent to vacate the unfavorable condition in gap with what outer engagement caused on every side at groove, so carry out the joint around groove reliably, can prevent the leakage of thermal medium from the thermal medium path by part at groove.
Under this situation, the groove that is formed on the composition surface preferably is formed on the both sides of mutual opposed mold dividing body with the cross sectional shape symmetrical with respect to the composition surface.
And then so prominent bar, prevents as the bad generation of the joint of joint defect at the joint that carries out the seam portion between the mold dividing body on the cavity surface by reliably.Thus, in the time of can preventing to repeat the heating of mould/cooling, crack by near the mold dividing body junction surface each other of the thermal stress bar of dashing forward in duplicate injection moulding circulation.
Yet, also can on the both sides' of the mold dividing body that is bonded with each other composition surface, form prominent bar.And then, can make the prominent bar on the composition surface that is formed at a side and the prominent bar that is formed on the opposing party's the composition surface disposes alternately.Like this, when fitted each other in the composition surface, can prevent that mold dividing body from departing from each other on the direction on composition surface.
Preferred prominent bar width is 0.5～20mm, highly is 0.02～2mm.The preferred size of the width of prominent bar is 1～5mm, and the preferred size of its height is 0.05～0.2mm.
The present invention also can be a kind of mold dividing body, be divided into raised part a plurality of and constitute along the projected direction of raised part in order to form protuberance, described protuberance is formed on the mould in order to form convex form portion on the moulding product that form by injection moulding.This mold dividing body, it is characterized in that, have: groove, the thermal medium path that is used to carry out the temperature adjustment of mould when being formed on injection moulding on the bonding method by diffusion bond method etc. and composition surface that other mold dividing body engages is formed at the composition surface; With prominent bar, along the outer peripheral edges portion and the groove formation on composition surface.
Such mold dividing body is suitable for the manufacture method of above-mentioned mould.
A kind of mould of the present invention is used to be installed on the injection (mo(u)lding) machine and by injection moulding formation moulding product, it is characterized in that having: fixed side mold is fixed on the injection (mo(u)lding) machine; With movable side mold, with can be approaching with respect to the state of fixed side mold/be installed on the injection (mo(u)lding) machine with leaving, on a side of said fixing side mold and above-mentioned movable side mold, form protuberance, described protuberance is outstanding towards the opposing party of fixed side mold and movable side mold, and on the moulding product, form convex form portion, protuberance is divided into a plurality of mold dividing bodies along the projected direction of this protuberance and engages along the projected direction lamination and form by making, on at least one side of the mold dividing body that is bonded with each other in each other composition surface, form prominent bar, so that the leading section of prominent bar touches the state of the opposing party's mold dividing body, mold dividing body is engaged with each other.
According to the present invention so that the leading section of the prominent bar that forms on the composition surface of at least one side in the mold dividing body touches the state on the opposing party's the mold dividing body, these mold dividing bodies are bonded with each other after, engage in the part of prominent bar and to carry out especially reliably.If the groove that so prominent bar is formed on the composition surface along the thermal medium path of the temperature adjustment that is used to carry out mould when being formed on injection moulding forms, then prevent outer peripheral edges portion on mold dividing body composition surface each other, be the seam that occurs on the outer surface (cavity surface) of protuberance between the mold dividing body, maybe can prevent from the leakage of the thermal medium of thermal medium path.Its result can improve the quality of products and improve the durability of mould.
Description of drawings
Fig. 1 is the figure that the integral body of the injection (mo(u)lding) machine of expression present embodiment constitutes.
Fig. 2 is the figure of the formation adjusted of the temperature of the expression mould that is used to carry out injection (mo(u)lding) machine.
Fig. 3 is the figure of the example adjusted of the temperature of expression mould.
Fig. 4 is the sectional view of the mould of present embodiment.
Fig. 5 is the perspective expanded view of the mold dividing body of expression protuberance when being the square-section.
Fig. 6 is the perspective expanded view of the mold dividing body of expression protuberance when being circular cross-section.
Fig. 7 is the perspective cross-sectional view that is illustrated in the prominent bar that forms on the composition surface of mold dividing body of square-section.
Fig. 8 is perspective cross-sectional view and the elevational sectional view that is illustrated in the prominent bar that forms on the composition surface of mold dividing body of circular cross-section.
Fig. 9 is the figure of the application examples of expression mold dividing body.
Figure 10 is the figure that expression is used to carry out the formation that the temperature of mould in the past adjusts.
The specific embodiment
Below, based on embodiment shown in the drawings, the present invention will be described in detail.
Fig. 1 is the figure that is used to illustrate that the summary of the injection (mo(u)lding) machine 10 of present embodiment constitutes.In the present embodiment, enumerated the example that uses hot water as heat medium.
As shown in Figure 1, the mold closing mechanism of injection (mo(u)lding) machine 10 is fixed on fixed form 12 on the base station 11, and fixed side mold 13 is installed on fixed form 12.But the movable side mold 14 relative with fixed side mold 13 is installed in and fixed form 12 relatively on the moving platens 15 of configuration.But moving platen 15 is laid on guide rail 16 guiding on the base station 11, can via linear bearing and fixed form 12 relative to and move.But use electric ball screw 17 moving of the moving platen 15 that is used for die opening and closing.
A plurality of connecting rods 18 directly are connected setting with the slide block 19 that slides in being built in a plurality of matched moulds oil hydraulic cylinder 12a of fixed form 12.But the leading section of each connecting rod 18 connects the through hole of moving platen 15.Leading section at connecting rod 18 is formed with thread groove 18a, but is fastening the halfnut 18b that has on the opposite side with mould that is configured in moving platen 15 on this thread groove 18a, thus the tension direction of fixed constraint connecting rod 18.
Injecting unit 20 is motorized motions modes.On the injection cylinder 21 that has with the nozzle of the resin of fixed side mold 13 inlet butt, be provided with the support 21a that forms as one with injection cylinder 21.On this support 21a, with the bilateral symmetry of the center line of injection cylinder 21 a pair of injection be installed drive servomotor 22,22, on the output shaft of this servomotor 22,22, directly be connected with ballscrew shaft 23,23.On ballscrew shaft 23,23, screw togather a pair of ball- screw nut 25,25 that is installed on the traversing carriage 24.Drive by making a pair of injection drive servomotor 22,22 rotation synchronously, injection screw 21b is forward-reverse axially in the centre of injection cylinder 21.
The injection screw 21b of injection cylinder 21 is driven in rotation by the injection screw rotary drive motor 26 that is installed on the traversing carriage 24, carries out the rotation of the resin in the injection cylinder 21 and sends and plasticization.
Injection moulding control device 50 is according to the program of molding procedure, carry action oil to matched moulds oil hydraulic cylinder 12a, drive servomotor 22,22 to the injection of injecting unit 20 and carry electric currents and make injection screw 21b forward-reverse, carry electric currents and the plasticization of resin is indicated to the injection screw rotary drive motor 26 of injection screw 21b.
Injecting unit 20 is injecting molten resin in the mold cavity that fixed side mold 13 forms with movable side mold 14 matched moulds.Behind the moulding product cooling curing, movable side mold 14 is untied with the matched moulds of fixed side mold 13 and is combined, and takes out the moulding product away from fixed side mold 13 by the action of the electric ball screw 17 of mobile usefulness.
On fixed side mold 13, movable side mold 14, be formed with and be used for thermal medium path 30,31 that die surface is heated, cools off.Make the metal mold cavity face heat cooling hastily in order to transmit heat apace, thermal medium path 30,31 is formed near the position of mold cavity as best one can.And, on this thermal medium path 30,31, be connected with respectively and be used for sending into the thermal medium supply pipe 32I of thermal medium and being used for discharging to the outside thermal medium discharge pipe 32O of thermal medium from thermal medium path 30,31 from outside thermotropism medium channel 30,31.
As shown in Figure 2, on thermal medium supply pipe 32I, be connected with the heat medium feedway 33 of supplying with thermal medium and the cooling medium feedway 34 of supplying with cooling medium.In the present embodiment, heat medium, cooling medium make water (liquid).
These heat medium feedwaies 33, cooling medium feedway 34 are connected with medium switching device shifter 60.In order to switch the thermal medium that supplies to thermal medium supply pipe 32I, being provided with on medium switching device shifter 60 respectively can be to carrying out the switch valve (not shown) of switch from the heat medium of heat medium feedway 33, cooling medium feedway 34, the conveying supply pipe of cooling medium.Each switch valve of medium switching device shifter 60 is by die temperature control device (control device heating/cool time) 70, and based on its switch of predefined programme-control, switching is to the supply of the thermal medium supply pipe 32I of heat medium, cooling medium/end.Promptly, to fixed side mold 13, when movable side mold 14 heats, to be sent to thermal medium supply pipe 32I by the heat medium of heat medium feedway 33 heating, to fixed side mold 13, when movable side mold 14 cools off, will be sent to thermal medium supply pipe 32I from the cooling medium that cooling medium feedway 34 is supplied with.
As shown in Figure 1 and Figure 2, with the cavity surface of fixed side mold 13, the movable side mold 14 configuration mold temperature sensor 40 that joins.Signal by mold temperature sensor 40 detected mold temperatures is sent to die temperature control device 70.
In addition, as shown in Figure 2, on thermal medium supply pipe 32I, be provided with the heat medium temperature sensor 41 of the thermocouple etc. of the temperature that is used for the thermal medium in the detector tube; With the pressure sensor 42 that is used to detect thermal medium pressure.Be sent to die temperature control device 70 by the temperature of these heat medium temperature sensors 41, pressure sensor 42 detected thermal mediums, the signal of pressure.
In die temperature control device 70, based on coming control medium switching device shifter 60 by mold temperature sensor 40 detected mold temperatures with by temperature, the pressure of heat medium temperature sensor 41, pressure sensor 42 detected thermal mediums, switch valve (not shown) to heat medium feedway 33, cooling medium feedway 34 carries out switch, and control is to the heat medium of thermal medium supply pipe 32I, the service time of cooling medium.
In a series of injection moulding circulation, die temperature control device 70 is carried out the processing of determining based on the computer program that imports in advance, and by the supply to thermal medium supply pipe 32I of control heat medium, cooling medium, carries out temperature control as described below.
Fig. 3 is the figure of the variations in temperature in a series of injection moulding circulation of expression.At this, in injection moulding control device 50, because the temperature (mold temperature) of control fixed side mold 13, movable side mold 14 therefore represented the variation of mold temperature in Fig. 3, but the die cavity temperature substantially also is of equal value.
The operation that begins to boost from matched moulds, to be sent to thermal medium supply pipe 32I by the heat medium of heat medium feedway 33 heating by die temperature control device 70 control medium switching device shifters 60, fixed side mold 13, movable side mold 14 will be heated.
And, after the heating of fixed side mold 13, movable side mold 14, the mold cavity injecting molten resin that beginning forms with movable side mold 14 matched moulds to fixed side mold 13.Stop from supply from heat medium feedway 33 to the heat medium of thermal medium supply pipe 32I thereafter.It is to be undertaken by die temperature control device 70 control medium switching device shifters 60 that the supply of heat medium stops.
Also can carry out pressurize in the mold cavity in the time that the injection of resin finishes.Between injection～hold period, the supply that the temperature of fixed side mold 13, movable side mold 14 is accompanied by heat medium stops, and reduces by natural heat release.
Thereafter, to the cooled transition of fixed side mold 13, movable side mold 14.The cooling of fixed side mold 13, movable side mold 14 is by die temperature control device 70 control medium switching device shifters 60, will be sent to thermal medium supply pipe 32I from the cooling medium that cooling medium feedway 34 is supplied with.Cool off fixed side mold 13, movable side mold 14 rapidly by sending into of cooling medium.If the temperature of fixed side mold 13, movable side mold 14 reduces, then stop the supply of cooling medium to thermal medium supply pipe 32I by die temperature control device 70 control medium switching device shifters 60.
The resin cooling curing and in mold cavity, formed the moulding product after, movable side mold 14 is untied with the matched moulds of fixed side mold 13 and is combined and die sinking.Then, and then make movable side mold 14 away from fixed side mold 13 by the action of moving with electric ball screw 17, and taking-up moulding product.
Thereafter, by repeating circulation same as described above, can be successively with the injection moulding of moulding product.
In above-mentioned circulation, the suitable heat treatment of can in the process of cooling, annealing etc.
As shown in Figure 4, in the present embodiment, the moulding product that formed by fixed side mold 13, movable side mold 14 have the A of convex form portion.Corresponding, on fixed side mold 13, form recess 13A, on movable side mold 14, form protuberance 14A.
Protuberance 14A is divided into movable side mold 14 a plurality of along its projected direction.Promptly, in movable side mold 14, cavity surface beyond the A of convex form portion forms by die cavity article body 80 is installed on baffle plate 1, and is relative therewith, protuberance 14A by install along its projected direction lamination on cavity part main body 80 plural mold dividing body 81A, 81B ... and form.In the present embodiment, protuberance 14A constitutes three mold dividing body 81B, 81C, 81D is installed on the mold dividing body 81A that forms as one with cavity part main body 80, but its quantity so long as more than two without any qualification.
Fig. 5 is that protuberance 14A is the example of the situation of square-section, and Fig. 6 is that protuberance 14A is the example of the situation of circular cross-section.
As Fig. 5, shown in Figure 6, these mold dividing bodies 81A, 81B, 81C ... has cross section respectively corresponding to the cross sectional shape of protuberance 14A, be bulk, make these mold dividing bodies 81A, 81B, 81C with height of regulation ... be formed for forming groove 82, the hole 83 of continuous thermal medium path 30,31 under the state that is bonded with each other.Wherein, groove 82 expose mold dividing body 81A, 81B, 81C ... the composition surface and form, by with other mold dividing body 81A, 81B, 81C ... engage and form thermal medium path 31.
As Fig. 7, shown in Figure 8, mold dividing body 81A, g1B, 81C ... each composition surface 85 on, along its outer peripheral edges portion, promptly along the mold dividing body 81A, the 81B that in protuberance 14A, form mold cavity surface, 81C ... side 86 and the boundary portion between the composition surface 85, form continuously prominent bar 87.In addition, in composition surface 85, form prominent bar 88 continuously along the edge portion of the bilateral of groove 82.
Mold dividing body 81A, 81B, 81C ... for example, its composition surface is engaged each other by the diffusion bond method.The diffusion bond method is to apply predetermined voltage on two mold dividing body 81A, 81B being bonded with each other or mold dividing body 81B, 81C, and with predetermined extruding force (pressure) extruding certain hour and carry out.At this, with the diffusion bond method be used for mold dividing body 81A, 81B, 81C ... joint, but can certainly replace this method and use other joint method.
These prominent bars the 87, the 88th, make mold dividing body 81A, 81B, 81C ... between be used for carrying out reliably the structure of this joint when being bonded with each other.By the junction surface being defined as prominent bar 87,88, thereby not only the processing of the high accuracy of the degree of flushing at junction surface becomes easy, can also make electric current concentrate on the narrow zone at junction surface, even, also can carry out efficient heating, pressurization based on the joint of the combination between the material that is difficult to engage.
From such purpose, preferably the width w of prominent bar 87,88 is 0.5～20mm, more preferably is of a size of 1～5mm, and preferably its height h is 0.02～2mm, more preferably size 0.05～0.2mm.
As mentioned above, the protuberance 14A that makes movable side mold 14 is along a plurality of mold dividing body 81A of its projected direction lamination, 81B, 81C and engage described composition surface 85, thereby form as one, on composition surface 85 separately, along the edge portion formation raised line 87,88 of its outer peripheral edges portion and groove 82.Thus, make mold dividing body 81A, 81B, 81C ... during joint, on this composition surface 85, can engage the outer peripheral edges portion on the composition surface 85 that forms cavity surface reliably and form the edge portion of the groove 82 of thermal medium path 31.Consequently, by make mold dividing body 81A, 81B, 81C ... engage, self-evident after just having made movable side mold 14, even in the long-term use that applies thermal stress repeatedly, also can prevent mold dividing body 81A, 81B, 81C ... seam come across cavity surface, avoid seam to be transferred to the moulding product and go up and make the reduction of moulding product quality.In addition, can prevent that thermal medium from leaking from the part of the groove 82 of formation thermal medium path 31, and can improve the durability of movable side mold 14.
In the above-described embodiment, the cross sectional shape that makes groove 82 is for semicircle, but this cross sectional shape without any qualification, also can be other shape such as cross section rectangle.In addition, shown in Fig. 9 (a), groove 82 is formed on the both sides on mutual opposed composition surface 85,85, thereby also can form thermal medium path 31.
At the cross sectional shape that makes the groove 82,82 on the both sides that are formed at mutual opposed composition surface 85,85 is to become under the situation of symmetric shape with respect to the composition surface, compare with the situation that only groove 82 is set in a mutual side of corresponding engagement face 85,85, to be suppressed at each mold dividing body 81A, 81B, 81C ... temperature distributing disproportionation on the monomer is effective.
Mold dividing body 81A, 81B, 81C ... only the part at prominent bar 87,88 engages, therefore mutual opposed mold dividing body 81A, 81B, 81C ... between the heat transmission only limit to the part of prominent bar 87,88.In addition, for for the heat exchange amount of thermal medium, the surface area of groove 82 is overriding reasons.Therefore, only the side at mutual corresponding engagement face 85,85 is provided with under the situation of groove 82, mold dividing body 81A, 81B, 81C ... end face, be provided with groove 82 sides' the face and the heat exchange of thermal medium and become big, but since to relative mold dividing body 81A, 81B, 81C ... the heat transmission poor, therefore the heat exchange amount with thermal medium diminishes.Like this, with mold dividing body 81A, 81B, 81C ... end face between, the composition surface is produced temperature difference locally as the border.For example, make heat medium under the situation of groove 82 circulations, mold dividing body 81A, the 81B of a side that is provided with groove 82,81C ... end face portion, the heat that flows into from thermal medium is big, and to relative mold dividing body 81A, 81B, 81C ... hot-fluid go out for a short time, so the ascending amount of temperature is big.But, relative mold dividing body 81A, 81B, 81C ... the end face that does not have groove 82, few from the hot influx of thermal medium, and from relative mold dividing body 81A, 81B, 81C ... amount of heat transfer also little, so the temperature ascending amount is little.
Relative therewith, the cross sectional shape of the groove 82,82 that the both sides that make on mutual opposed composition surface 85,85 form becomes symmetric shape with respect to the composition surface, thereby and the heat exchange between the thermal medium mutual opposed mold dividing body 81A, 81B, 81C ... the junction surface on can be identical, therefore relative mold dividing body 81A, 81B, 81C ... between equate with the heat exchange amount of thermal medium, heat exchange can be carried out, the temperature difference of locality can be prevented to produce at the junction surface with respect to the composition surface symmetry.
For prominent bar 87,88, on mutual opposed composition surface 85,85, can also can form only at a square one-tenth both sides.In this case, shown in Fig. 9 (b), also can setover mutually at prominent bar 87A, the 88A of the square one-tenth on mutual opposed composition surface 85,85 with at prominent bar 87B, 88B that the opposing party forms forms to become staggered.Like this, with mold dividing body 81A, 81B, 81C ... make when fitting between the composition surface 85,85 before being engaged with each other, can easily carry out its location.
In addition, can be on mutual opposed composition surface 85,85, only at the prominent bar 87,88 of a square one-tenth, the opposing party on mutual opposed composition surface 85,85 forms the corresponding groove of cross sectional shape with the bar 87,88 of dashing forward.In this case, the depth d of groove is preferably set to and the height h of the bar 87,88 of dashing forward poor (h-d) is 0.02 above-mentioned～2mm, and preferred size is 0.05～0.2mm.
In addition, the cross sectional shape of above-mentioned prominent bar 87,88 is not limited to the rectangular shape shown in the above-mentioned embodiment, also can be trapezoidal shape, triangular shaped etc.And then prominent bar 87,88 is not one but is set up in parallel a plurality of, shown in Fig. 9 (c), can be set to the broach shape yet.
And then, in the above-described embodiment, represented width w, the height h preferred range of prominent bar 87,88, according to material, energising voltage, extruding force, extrusion time etc., this variable range.
In addition,, just represent the formation that it is basic, also can carry out suitable change for the formation of the integral body of injection (mo(u)lding) machine 10.For example, as thermal medium, also can make the gas of liquid beyond the water, steam, air etc.
In addition, only otherwise break away from purport of the present invention, can accept or reject and select formation that above-mentioned embodiment enumerates or the formation that suitably changes to other.
[example is discussed]
At this, the width w of prominent bar 87,88, the optimum range of height h are discussed, therefore its result is represented.
Mold dividing body 81A, 81B, 81C ... circular and highly be 30mm for the cross section of diameter 70mm, use following two kinds of materials as material: the STAVAX material of the HPM38 material of Hitachi Metal Co., Ltd.'s system and ウ Star デ ホ Le system corporate system.
Mold dividing body 81A, 81B, 81C ... composition surface 85 on, form groove 82 as shown in Figure 8, the edge portion of 85 outer peripheral edges portion and groove 82 makes prominent bar 87,88 form width w as shown in table 1, height h along the composition surface.
And, on two mold dividing body 81A, 81B, apply the voltage of 100V, with the extruding force extruding 10 minutes of 50MPa and engage, obtain sample by the diffusion bond method.
Behind the joint, under 1000 ℃ temperature, carry out the annealing of sample, carry out the adjustment of the stress mitigation/mechanical strength of sample and handle.
As Fig. 8 (b) shown in, sample by the cross section cut-out/grinding that comprise this central axis, to this section observed thereafter.By observing, sample that can't see the gap on the composition surface is " zero ", can see that in a part sample in the gap more than the 0.05mm is " △ ", can see that on the whole the incomplete sample of joint in gap is " * ", and observed result is as shown in table 1.
[table 1]
As shown in table 1, confirm that in HPM38 material, STAVAX material, all preferably making the width w of prominent bar 87,88 is 0.5～20mm, height h is 0.02～2mm.
Claims (19)
1. the manufacture method of a mould is to be used to be installed on the injection (mo(u)lding) machine and to form the manufacture method of a pair of mould of moulding product by injection moulding, it is characterized in that,
Form protuberance on the side in a pair of above-mentioned mould, convex form portion is given prominence to and formed to described protuberance towards the opposing party's above-mentioned mould on above-mentioned moulding product,
Raised part is divided into a plurality of mold dividing bodies lamination on above-mentioned projected direction along the projected direction of this protuberance and engages and to form by making,
When the above-mentioned mold dividing body that makes lamination is engaged with each other, on at least one side of above-mentioned mold dividing body in each other composition surface, form prominent bar, above-mentioned mold dividing body is engaged with each other so that the leading section of above-mentioned prominent bar touches the state of the opposing party's above-mentioned mold dividing body.
2. the manufacture method of mould as claimed in claim 1 is characterized in that,
Above-mentioned prominent bar forms along the outer peripheral edges portion on the above-mentioned composition surface of above-mentioned mold dividing body.
3. the manufacture method of mould as claimed in claim 1 or 2 is characterized in that,
Be used to carry out the thermal medium path that the temperature of above-mentioned mould is adjusted when being formed on injection moulding, above-mentioned prominent bar forms along the groove that is formed at above-mentioned composition surface.
4. the manufacture method of mould as claimed in claim 3 is characterized in that,
The above-mentioned groove that is formed at above-mentioned composition surface is the cross sectional shape symmetrical with respect to above-mentioned composition surface on the both sides of mutual opposed above-mentioned mold dividing body.
5. the manufacture method of mould as claimed in claim 1 is characterized in that,
When above-mentioned prominent bar is used to prevent repeat in duplicate injection moulding circulation the heating of above-mentioned mould/cooling, near above-mentioned prominent bar and at above-mentioned mold dividing body junction surface each other, crack by thermal stress.
6. the manufacture method of mould as claimed in claim 1 is characterized in that,
Form above-mentioned prominent bar on the both sides' of the above-mentioned mold dividing body that is bonded with each other above-mentioned composition surface, the above-mentioned prominent bar that forms on above-mentioned prominent bar that forms on above-mentioned composition surface of the side and the above-mentioned composition surface the opposing party disposes alternately.
7. the manufacture method of mould as claimed in claim 1 is characterized in that,
Above-mentioned prominent bar width is 0.5～20mm, highly is 0.02～2mm.
8. mold dividing body, be divided into raised part a plurality of and constitute along the projected direction of raised part in order to form protuberance, described protuberance is formed on the mould in order to form convex form portion on the moulding product that form by injection moulding, it is characterized in that having:
Groove for the thermal medium path of adjusting in the temperature that is used to carry out above-mentioned mould when being formed on injection moulding on diffusion bond method and the composition surface that other above-mentioned mold dividing body engages, and is formed at above-mentioned composition surface; With
Prominent bar is along the outer peripheral edges portion and the formation of above-mentioned groove on above-mentioned composition surface.
9. mold dividing body as claimed in claim 8 is characterized in that,
The above-mentioned groove that is formed at above-mentioned composition surface is the cross sectional shape symmetrical with respect to above-mentioned composition surface on the both sides of mutual opposed above-mentioned mold dividing body.
10. mold dividing body as claimed in claim 8 is characterized in that,
When above-mentioned prominent bar is used to prevent repeat in duplicate injection moulding circulation the heating of above-mentioned mould/cooling, near above-mentioned prominent bar and at above-mentioned mold dividing body junction surface each other, crack by thermal stress.
11. mold dividing body as claimed in claim 8 is characterized in that,
Form above-mentioned prominent bar on the both sides' of the above-mentioned mold dividing body that is bonded with each other above-mentioned composition surface, the above-mentioned prominent bar that forms on above-mentioned prominent bar that forms on above-mentioned composition surface of the side and the above-mentioned composition surface the opposing party disposes alternately.
12. mold dividing body as claimed in claim 8 is characterized in that,
The width of above-mentioned prominent bar is 0.5～20mm, highly is 0.02～2mm.
13. a mould is used to be installed on the injection (mo(u)lding) machine and forms the moulding product by injection moulding, it is characterized in that having:
Fixed side mold is fixed on the above-mentioned injection (mo(u)lding) machine; With
Movable side mold, with the opposed state of said fixing side mold can be approaching/be installed on the above-mentioned injection (mo(u)lding) machine with leaving,
Form protuberance on a side of said fixing side mold and above-mentioned movable side mold, described protuberance is outstanding towards the opposing party of said fixing side mold and above-mentioned movable side mold, and forms convex form portion on above-mentioned moulding product,
Raised part is divided into a plurality of mold dividing bodies along the projected direction of this protuberance and engages along above-mentioned projected direction lamination and form by making,
On at least one side of the above-mentioned mold dividing body that is bonded with each other in each other composition surface, form prominent bar,, above-mentioned mold dividing body is engaged with each other so that the leading section of above-mentioned prominent bar touches the state of the opposing party's above-mentioned mold dividing body.
14. mould as claimed in claim 13 is characterized in that,
Above-mentioned prominent bar forms along the outer peripheral edges portion on the above-mentioned composition surface of above-mentioned mold dividing body.
15. as claim 13 or 14 described moulds, it is characterized in that,
Be used to carry out the thermal medium path that the temperature of above-mentioned mould is adjusted when being formed on injection moulding, above-mentioned prominent bar forms along the groove that is formed on the above-mentioned composition surface.
16. mould as claimed in claim 15 is characterized in that,
The above-mentioned groove that is formed on the above-mentioned composition surface is the cross sectional shape symmetrical with respect to above-mentioned composition surface on the both sides of mutual opposed above-mentioned mold dividing body.
17. mould as claimed in claim 13 is characterized in that,
When above-mentioned prominent bar is used to prevent repeat in duplicate injection moulding circulation the heating of above-mentioned mould/cooling, near above-mentioned prominent bar and at above-mentioned mold dividing body junction surface each other, crack by thermal stress.
18. mould as claimed in claim 13 is characterized in that,
Form above-mentioned prominent bar on the both sides' of the above-mentioned mold dividing body that is bonded with each other above-mentioned composition surface, the above-mentioned prominent bar that forms on above-mentioned prominent bar that forms on above-mentioned composition surface of the side and the above-mentioned composition surface the opposing party disposes alternately.
19. mould as claimed in claim 13 is characterized in that,
The width of above-mentioned prominent bar is 0.5～20mm, highly is 0.02～2mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009037061A JP5374183B2 (en) | 2009-02-19 | 2009-02-19 | Mold manufacturing method, mold division, mold |
| JP2009-037061 | 2009-02-19 |
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| Publication Number | Publication Date |
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| CN101811352A true CN101811352A (en) | 2010-08-25 |
| CN101811352B CN101811352B (en) | 2013-12-18 |
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| CN2009101411039A Expired - Fee Related CN101811352B (en) | 2009-02-19 | 2009-05-20 | Manufacturing method of mold, mold dividing body and Mold |
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| Country | Link |
|---|---|
| JP (1) | JP5374183B2 (en) |
| KR (1) | KR101183502B1 (en) |
| CN (1) | CN101811352B (en) |
| TW (1) | TWI387525B (en) |
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| JP6493583B1 (en) * | 2018-02-28 | 2019-04-03 | Smk株式会社 | Molding equipment |
Citations (6)
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|---|---|---|---|---|
| JPH06238728A (en) * | 1993-02-18 | 1994-08-30 | Mitsubishi Heavy Ind Ltd | Mold |
| JP2005329577A (en) * | 2004-05-19 | 2005-12-02 | Mitsubishi Heavy Ind Ltd | Method and apparatus for adjusting temperature of mold |
| CN1954987A (en) * | 2005-10-25 | 2007-05-02 | 山下电气株式会社 | Metal mold for forming synthetic resin |
| KR20070107984A (en) * | 2006-05-04 | 2007-11-08 | 한국과학기술원 | Die with three-dimensional heat exchange structure and manufacturing method thereof |
| CN101098777A (en) * | 2005-01-06 | 2008-01-02 | 住友重机械工业株式会社 | Molding machine, injection device, and temperature control method for the device |
| JP2009292005A (en) * | 2008-06-04 | 2009-12-17 | Konica Minolta Opto Inc | Optical film, optical film manufacturing method, and optical film manufacturing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109014A (en) * | 1986-10-25 | 1988-05-13 | Sumitomo Heavy Ind Ltd | Preparation of mold having path for temperature controlling medium |
| JPH02292005A (en) * | 1989-05-01 | 1990-12-03 | Mitsubishi Heavy Ind Ltd | Manufacture of mold |
| KR200185743Y1 (en) * | 1999-11-08 | 2000-06-15 | 정해송 | Roadside tree supporter |
| JP2003103324A (en) | 2001-09-26 | 2003-04-08 | Suwa Netsukogyo Kk | Manufacturing method of mold |
| KR100858246B1 (en) * | 2007-11-08 | 2008-09-12 | 주식회사 로얄초경 | Method for manufacturing a head of putter |
-
2009
- 2009-02-19 JP JP2009037061A patent/JP5374183B2/en not_active Expired - Fee Related
- 2009-05-06 TW TW098115040A patent/TWI387525B/en not_active IP Right Cessation
- 2009-05-18 KR KR1020090043127A patent/KR101183502B1/en not_active IP Right Cessation
- 2009-05-20 CN CN2009101411039A patent/CN101811352B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06238728A (en) * | 1993-02-18 | 1994-08-30 | Mitsubishi Heavy Ind Ltd | Mold |
| JP2005329577A (en) * | 2004-05-19 | 2005-12-02 | Mitsubishi Heavy Ind Ltd | Method and apparatus for adjusting temperature of mold |
| CN101098777A (en) * | 2005-01-06 | 2008-01-02 | 住友重机械工业株式会社 | Molding machine, injection device, and temperature control method for the device |
| CN1954987A (en) * | 2005-10-25 | 2007-05-02 | 山下电气株式会社 | Metal mold for forming synthetic resin |
| KR20070107984A (en) * | 2006-05-04 | 2007-11-08 | 한국과학기술원 | Die with three-dimensional heat exchange structure and manufacturing method thereof |
| JP2009292005A (en) * | 2008-06-04 | 2009-12-17 | Konica Minolta Opto Inc | Optical film, optical film manufacturing method, and optical film manufacturing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101183502B1 (en) | 2012-09-20 |
| TW201031518A (en) | 2010-09-01 |
| JP5374183B2 (en) | 2013-12-25 |
| KR20100094922A (en) | 2010-08-27 |
| TWI387525B (en) | 2013-03-01 |
| JP2010188666A (en) | 2010-09-02 |
| CN101811352B (en) | 2013-12-18 |
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