CN100560329C - Die assembly - Google Patents
Die assembly Download PDFInfo
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- CN100560329C CN100560329C CNB2007101041117A CN200710104111A CN100560329C CN 100560329 C CN100560329 C CN 100560329C CN B2007101041117 A CNB2007101041117 A CN B2007101041117A CN 200710104111 A CN200710104111 A CN 200710104111A CN 100560329 C CN100560329 C CN 100560329C
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- Prior art keywords
- die plate
- electric heater
- water cooling
- heated die
- die assembly
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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
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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
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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
- B29C2045/7393—Heating or cooling of the mould alternately heating and cooling
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of die assembly, in this die assembly, moulding material is by supply and injection moulding under the state of chamber mould and the mutual interlocking of core.In the chamber mould that comprises heated die plate and cooling template, the cooling template relatively contacts heated die plate or leaves heated die plate.In injection moulding, can reduce thermal loss, and can cool off in the time of needs.
Description
Technical field
The present invention relates to a kind of die assembly, in this die assembly, moulding material is provided and is injected into type under the state of chamber mould and the mutual interlocking of core, and the present invention relates more specifically to a kind of like this die assembly, this die assembly can make the cooling template contact heated die plate in the mould of chamber or move away from, and this cooling template and heated die plate all are included in this chamber mould.
Background technology
As everyone knows, injection moulding is the wherein a kind of method that is used for the product that moulding made by the synthetic resin material that is commonly called plastics.Injection moulding is expelled to molten resin in the chamber of the mould with reservation shape and makes this molten resin cooling and sclerosis, thereby is molded into the shape product identical with this chamber.
Usually, in the situation of most of electronic products, though profile is injected into type, the surface is still coarse.Therefore, electronic product is painted especially coating and glass coating.
Developed a kind of so cold mould, after injection moulding, the outside of this cold mould is cooled and its interior section is slowly cooled, thereby improves the surface of injection molding product in appearance and prevent processed complex.This cold mould has increased calorific intensity.But even provide the high temperature moulding material in the incipient stage, but the interior section that contacts the mould of this moulding material still keeps lower temperature.Therefore, be difficult to improve in appearance the surface of injection molding product.
Therefore, the forming technique of instantaneous heating and rapid cooling die is studied.As a result, developed multiple die material assembly.
In the die material assembly, electric heater is embedded in the less relatively core that is inserted in the chamber.The part that contacts this core is the interior section of moulding material, this feasible surface that is difficult to improve in appearance moulding material.
According to disclosed die material assembly among the patent application No.1997-0062643, be provided with hot line (hot wire) at the die holder place that is used to support the mould that limits chamber.Therefore, before being fed to the high temperature moulding material in this mould, need expensive time and electric power that chamber is heated to high temperature.
In addition; according to disclosed die material assembly among patent application No.2000-55868 and the 2002-62528; core by coil heats and with another mould of this core interlocking by the gaseous fuel flame heat after; moulding material is injected into type, and by gases at high pressure and/or cooling agent and cooled off rapidly.But, be difficult to by utilizing gaseous fuel flame this mould to be heated to exactly the temperature of moulding material.Therefore, the surface of injection molding product does not improve in appearance, and because gaseous fuel may cause safety problem.
And according to disclosed die material assembly among the patent application No.2000-6600, heater is installed in the manifold, thereby prevents that moulding material from hardening when being sent to chamber.Because be not heated with the chamber that moulding material directly contacts, therefore the surface of injection molding product does not improve in appearance.Formation connects the extended slot that heater is imbedded the both sides of groove respectively in manifold, and has a pair of line to be inserted in this extended slot, separates to prevent heater.That is to say that make the processing processing of imbedding heater increase the processing that forms extended slot and handle and line is handled the processing of inserting, this makes that whole processing processing is complicated and has reduced productivity ratio.
In order to address the above problem, developed many die material assemblies, they are by carrying out heating in the mould of electric heater being imbedded the outside that limits moulding material, and by coolant channel is imbedded with mould that this mould contacts in cool off.
Fig. 1 is the side cutaway view of the traditional die material assembly of expression.
With reference to Fig. 1, in the die material assembly, chamber template 3 is installed into and can separates with cover half 1, and core mold plate 4 is installed into and can separates with dynamic model 2. Coolant channel 1h and 2h are formed in cover half 1 and the dynamic model 2, and heater 3a and 4a and warm air passage 3b and 4b are formed in chamber template 3 and the core mold plate 4.
Specifically, chamber gripper shoe 5 and spring 10 are installed between cover half 1 and the chamber template 3, so that chamber template 3 can be separated with cover half 1.Chamber gripper shoe 5 supports chamber template 3 and is supported on the cover half 1 by spring 10.
In addition, core gripper shoe 8 and spring 10 are installed between dynamic model 2 and the core mold plate 4, so that core mold plate 4 can be separated with dynamic model 2.Core gripper shoe 8 supporting-core templates 4 also are supported on the dynamic model 2 by spring 10.
Directing pin 12 is mounted to from dynamic model 2 and core gripper shoe 8 towards cover half 1 vertical stretching out.The guide pin hole 13 that directing pin 12 is inserted into wherein is formed in cover half 1 and the chamber gripper shoe 5.
In addition, be connected with mobile device (not shown), so that dynamic model 2 contacts or leave cover half 1 such as hydraulic test.When dynamic model 2 and cover half 1 interlocking, chamber template 3 and core mold plate 4 interlockings, thereby compression spring 10.In case chamber template 3 and cover half 1 interlocking, then core mold plate 4 just with dynamic model 2 interlockings.
The process of making injection-molded product in die assembly will be described below.Chamber template 3 and core mold plate 4 are heated by operate heater 3a and 4a or by warm air passage 3b and 4b supplying high temperature fluid.In the state that chamber template 3 and core mold plate 4 and cover half 1 and dynamic model 2 separate, they are heated rapidly.
Therefore, when dynamic model 2 when cover half 1 moves, directing pin 12 is assembled in the guide pin hole 13, thereby regulates the interlocking position of mould exactly.When the mutual interlocking of chamber template 3 and core mold plate 4, chamber gripper shoe 5 and core gripper shoe 8 are compressed spring 10 respectively.
Simultaneously, in case chamber template 3 and cover half 1 interlocking, then core mold plate 4 just with dynamic model 2 interlockings.Moulding material is introduced in the cavity space along injection canal, is injected into type, and is cooled off rapidly by the cooling fluid that flows through coolant channel 1h and 2h.
As mentioned above, in the die assembly of routine, heater 3a contacts or moves away from cover half 1 and the dynamic model 2 that wherein is formed with coolant channel 1h and 2h with the chamber template 3 that 4a imbeds wherein with core mold plate 4.After chamber template 3 and core mold plate 4 are heated, when chamber template 3 contacts cover half 1 and dynamic model 2 respectively with core mold plate 4, carry out injection moulding.Therefore, to cover half 1 that contacts chamber template 3 and core mold plate 4 and dynamic model 2 thermal loss takes place with core mold plate 4 from the chamber template 3 that is heated to high temperature.As a result, limiting a surface of chamber template 3 of cavity space and a surface of core mold plate 4 can not keep high temperature till injection moulding is finished.Therefore, be difficult to mildly the surface of injection molding product is processed processing.
In addition, in traditional die assembly, chamber gripper shoe 5 and spring 10 are installed between cover half 1 and the chamber template 3, so that chamber template 3 can be separated with cover half 1, and core gripper shoe 8 and spring 10 are installed between dynamic model 2 and the core mold plate 4, so that core mold plate 4 can be separated with dynamic model 2.Therefore, by being arranged on the high temperature of heater 3a in chamber template 3 and the core mold plate 4 and 4a or warm air passage 3b and 4b heating, or the injection of high temperature moulding material, may make contiguous spring 10 that thermal deformation take place owing to the heat transmission, thereby reduce durability.As a result, can not realize operating reliability.
In addition, in traditional die assembly, heater 3a and 4a are embedded in chamber template 3 and the core mold plate 4.Though at length do not illustrate, but having the heater 3a of circular section and 4a is embedded in assembling and is pressed in the rear surface of template, has the imbedding in the groove of quadrangle section, or heater 3a and 4a are inserted into and imbed in the groove, and the lid with quadrangle section is covered, with fixed heater 3a and 4a.Therefore, heater 3a and 4a are not fixed on with being stabilized and imbed in the groove.And assembling process is complicated.
Summary of the invention
For addressing the above problem, realized the present invention.The purpose of this invention is to provide a kind of die assembly, this die assembly can reduce thermal loss when mould is heated to high temperature, and cools off in the time of needs.
Another object of the present invention provides a kind of die assembly, even this die assembly also can improve durability and obtain operating reliability under the situation of high temperature.
An also purpose of the present invention provides a kind of die assembly, and this die assembly can easily fixedly secure the electric heater mould that is embedded in heating mould by the mounting structure that improves electric heater.
In order to realize above-mentioned purpose of the present invention, a kind of die assembly is provided, comprising: heated die plate, be used for limiting the part of moulding chamber at its front surface place, an electric heater is embedded in this heated die plate; The water cooling template, its contact or leave the rear surface of described heated die plate, and have water cooling passageway in inside; Core, this core and the chamber mould interlocking that is made of heated die plate and water cooling template are used to limit the moulding chamber; Telecontrol equipment is used to make described chamber mould and described core relatively to move, to open and close described chamber; And opening/closing, this device is installed between described heated die plate and the described water cooling template, is used to make described water cooling template contact or leaves described heated die plate.
Described heated die plate is fixed on the fixed head that is positioned on the side relative with described core, and described water cooling template moves back and forth in the space between described heated die plate and fixed head by described opening/closing.
Described opening/closing with a plurality of, be symmetrical manner and be installed between described water cooling template and the described fixed head.
Described opening/closing comprises: permanent magnet, and it is fixed in the release surface of described water cooling template and fixed head any; And electromagnet, it is fixed in the release surface of described water cooling template and fixed head another.
Described opening/closing comprises: guiding piece, this guiding piece are connected between the release surface of described water cooling template and fixed head; And servomotor, be used for to this guiding piece supply revolving force.
Opening/closing comprises: guiding piece, this guiding piece are connected between the release surface of described water cooling template and fixed head; With hydraulic equipment, be used for providing hydraulic pressure to this guiding piece.
Described heated die plate and water cooling template comprise and are used for moulding material is expelled to the indoor injection orifice of described forming cavity.
Electric heater imbeds in the release surface of described heated die plate, have the imbedding in the groove of respective shapes, and is useful on and prevents that seal that described electric heater separates is installed in this that wherein be embedded with electric heater and imbeds in the groove.
The outside of described electric heater is coated with the heat-transfer fluid with high heat transfer efficient.
Described seal is a heater housing, the shape of this heater housing be inserted into when described electric heater described that limit when imbedding in the groove, at described electric heater with to imbed the shape in the space between the groove corresponding.
The lower surface of described heater housing has the shape corresponding shape with a surface of described electric heater.
The top surface of described heater housing is and the continuous flat surfaces in the rear surface of described heated die plate.
Described seal describedly is provided at described electric heater when imbedding in the groove and imbeds heat transfer powder in the space that forms between the groove for being inserted into when described electric heater, and the heat of described seal by electric heater by moulding to fill this space.
The top surface of described molded heat transfer powder is and the continuous flat surfaces in the rear surface of described heated die plate.
Described heated die plate is divided into two parts along thickness direction, and described electric heater is imbedded in the groove, described imbedding in the release surface that groove is formed on these two parts, thus face mutually.
Described two parts imbed groove on the outside that closely is connected to described electric heater under the connection status of these two parts.
Description of drawings
To understand the present invention better with reference to accompanying drawing, these accompanying drawings are presented in the mode that illustrates and therefore do not limit the present invention, wherein:
Fig. 1 is the side view cutaway drawing of the traditional die assembly of expression;
Fig. 2 is the side view cutaway drawing of expression according to first example of die assembly of the present invention;
Fig. 3 is the side view cutaway drawing of expression according to second example of die assembly of the present invention;
Fig. 4 is the side view cutaway drawing of expression according to the 3rd example of die assembly of the present invention;
Fig. 5 is the side cutaway view of expression according to the 4th example of die assembly of the present invention;
Fig. 6 is that expression is applicable to the side cutaway view according to first example of the electric heater mounting structure of die assembly of the present invention;
Fig. 7 is that expression is applicable to the side cutaway view according to second example of the electric heater mounting structure of die assembly of the present invention; With
Fig. 8 is that expression is applicable to the side cutaway view according to the 3rd example of the electric heater mounting structure of die assembly of the present invention.
[explanation of the Reference numeral of the major part shown in the figure]
110: heated die plate 120: the water cooling template
112: electrical heating 112h: imbed groove
130: core 140: telecontrol equipment
152: electromagnet 154: permanent magnet
The specific embodiment
Describe die assembly according to a preferred embodiment of the invention below with reference to accompanying drawings in detail.
Fig. 2 is the side cutaway view of expression according to first example of die assembly of the present invention.
As shown in Figure 2, according to first example of the present invention, die assembly comprises: chamber mould 110 and 120, water cooling template 120 are installed in the mould of chamber, to contact or to leave heated die plate 110; With core 130, itself and chamber mould 110 and 120 interlockings are to limit chamber.Core 130 contacts or leaves chamber mould 110 and 120 by the telecontrol equipment 140 such as hydraulic test or pneumatic compression devices.On the contrary, water cooling template 120 contacts or leaves heated die plate 110 by the electromagnet 152 that is installed in its release surface place with permanent magnet 154.
Here, water cooling template 120, heated die plate 110, core 130 and telecontrol equipment 140 are mounted to row along above-below direction.
More particularly, heated die plate 110 forms the cup-shaped with groove, makes water cooling template 120 can be inserted in this heated die plate.Electric heater 112 is a kind of heater, and this electric heater is embedded in the bottom of heated die plate 110.
The top, both sides 114 of heated die plate 110 extends upward, to be fixed on the fixed head 116.Be formed with the groove that is used for limiting chamber in the bottom of heated die plate 110 with core 130.
When water cooling template 120 was moved in the groove of heated die plate 110 along the vertical direction, water cooling template 120 was not separated.
In addition, in heated die plate 110 and water cooling template 120, be formed with the injection canal 115 that is used for injecting forming material, to be communicated with chamber.In chamber mould 110 and 120, be formed with the injection orifice that is used to introduce moulding material.
Particularly, electromagnet 152 and permanent magnet 154 are installed in the release surface place of heated die plate 110 and water cooling template 120, thereby face mutually.Electromagnet 152 and permanent magnet 154 are arranged in heated die plate 110 and the water cooling template 120 symmetrically in paired mode, are used to increase attraction and repulsive force.
Therefore, when according to external signal, electric current is supplied to electromagnet 152, and electromagnet 152 and permanent magnet 154 be when having same pole, water cooling template 120 moves upward by repulsive force and separates with heated die plate 110.On the contrary, when electromagnet 152 had different magnetic poles with permanent magnet 154, water cooling template 120 moved downward by attraction and contacts with heated die plate 110.
For water cooling template 120 is separated with heated die plate 110, between electromagnet 152 and permanent magnet 154, need repulsive force.But, contact with heated die plate 110 in order to make water cooling template 120, between electromagnet 152 and permanent magnet 154, might not need attraction.That is to say that water cooling template 120 can be because of gravity falls, thus contact heated die plate 110.
Operation according to the die assembly of first example of the present invention will be described below.When according to external signal when electromagnet 152 supply electric currents are used for producing repulsive force, water cooling template 120 is separated with heated die plate 110.Electric current is supplied to electric heater 112, to heat described heated die plate 110.Telecontrol equipment 140 is operated, so that core 130 contacts with 120 with chamber mould 110.
When heated die plate 110 and water cooling template 120 are retained as when being separated from each other, do not conduct heat to water cooling template 120 from heated die plate 110, thereby improved the thermal efficiency.
Described chamber is formed between heated die plate 110 and the core 130.Under this state, moulding material is filled in this chamber by injection canal 115.
Be supplied to the electric current of electric heater 112 to be blocked, and between electromagnet 152 and permanent magnet 154, produce attraction, thereby water cooling template 120 is contacted with heated die plate 110.By coolant channel 122 supply coolants, be used for water quench template 120, heated die plate 110 and injection molding product.Core 130 separates with 120 with chamber mould 110 by telecontrol equipment 140, thereby injection molding product can be removed.
Fig. 3 is the side cutaway view of expression according to second example of die assembly of the present invention.
Second example of die assembly almost first example with die assembly is identical.As shown in Figure 3, guiding piece 162 is installed between the fixed head 116 and water cooling template 120 that heated die plate 110 is fixed thereon along the vertical direction, and be connected with servomotor 164, in order to driving described guiding piece 162, thereby make water cooling template 120 can contact or leave heated die plate 110.
The two ends of guiding piece 162 rotatably are installed in heated die plate 110 and water cooling template 120 places.The upper end of guiding piece 162 rotatably is limited in fixed head 116 places, and the lower end of guiding piece 162 rotates at water cooling template 120 places, thereby water cooling template 120 is moved along the vertical direction.
In second example, provide the servomotor 164 that obtains accurate position and speed according to external signal, accurately to control the motion of water cooling template 120.
The operation of the die assembly of second example according to the present invention will be described below.When servomotor 164 according to external signal during along a direction operation guide spare 162, water cooling template 120 moves up and separates with heated die plate 110.Supply electric currents to heat this heated die plate 110 to electric heater 112.Therefore, telecontrol equipment 140 is operated, so that core 130 contacts with 120 with chamber mould 110.
Between heated die plate 110 and core 130, limited chamber.Like this, moulding material is filled this chamber by injection canal 115.Owing to do not conduct heat to water cooling template 120, therefore prevented thermal loss, thereby improved heat transfer efficiency from heated die plate 110.
Be supplied to the electric current of electric heater 112 to be blocked.When servomotor 164 according to external signal during along other direction operation guide spare 162, water cooling template 120 contact heated die plates 110.Provide cooling agent by coolant channel 122, be used for water quench template 120, heated die plate 110 and injection molding product.Core 130 separates with 120 with chamber mould 110 by telecontrol equipment 140, thereby injection molding product can be removed.
Fig. 4 is the side cutaway view of expression according to the 3rd example of die assembly of the present invention.
The 3rd example of die assembly and first example of die assembly are much at one.As shown in Figure 4, guiding piece 172 is installed between the fixed head 116 and water cooling template 120 that heated die plate 110 is fixed thereon along the vertical direction, and be connected with hydraulic pressure or pneumatic compression devices 174 with driving guiding piece 172, thereby make water cooling template 120 can contact or move away from heated die plate 110.
The two ends of guiding piece 172 are fixed on the fixed head 116 on that side of heated die plate 110 and water cooling template 120.Guiding piece 172 is a kind of hydraulic cylinder or pneumatic cylinder, and its length changes at above-below direction by the pressure of supplying from hydraulic equipment 174.Therefore, water cooling template 120 is moved with respect to fixing heated die plate 110 on above-below direction.
Identical with second example, in the 3rd example, be provided with the hydraulic equipment 174 that is used for according to external signal control hydraulic pressure, be used for accurately controlling the motion of water cooling template 120.
Operation according to the die assembly of the 3rd example of the present invention will be described below.When hydraulic equipment 174 according to external signal when guiding piece 172 provides hydraulic pressure, guiding piece 172 extends, so that water cooling template 120 is separated with heated die plate 110.Supply electric currents to heat described heated die plate 110 to electric heater 112.Therefore, telecontrol equipment 140 is operated to core 130 and contacts with 120 with chamber mould 110.
Between heated die plate 110 and core 130, limited chamber.Like this, moulding material is filled this chamber by injection canal 115.Owing to do not transmit to water cooling template 120 from heated die plate 110, therefore prevented thermal loss, thereby improved heat transfer efficiency.
Be supplied to the electric current of electric heater 112 to be blocked.Regain hydraulic pressure according to external signal from guiding piece 172 when hydraulic equipment 174, guiding piece 172 shrinks, so that water cooling template 120 contacts with heated die plate 110.By coolant channel 122 supply coolants, be used for water quench template 120, heated die plate 110 and injection molding product.Core 130 separates with 120 with chamber mould 110 by telecontrol equipment 140, thereby injection molding product can be removed.
Fig. 5 is the side cutaway view of expression according to the 4th example of die assembly of the present invention.
The 4th example of die assembly and first example of die assembly are much at one.With reference to Fig. 5, have some circular multi-stage gears 182 to be mounted to and the engagement of the both sides of water cooling template 120, and the guide gear 184 that is formed with the gear teeth in a longitudinal direction is mounted to and gear 182 engagements.Spring 186 is being installed on the above-below direction between heated die plate 110 and the water cooling template 120, so that water cooling template 120 can be separated with heated die plate 110 by elastic repulsion power.Gear 182 is connected to specific driving arrangement, in order to rotate according to external signal.
More particularly, the groove that is formed by the top of heated die plate 110 is open upwards in front and back, and gear teeth 120a is on the front-end and back-end that are formed on water cooling template 120 on the above-below direction.Gear 182 meshes with the both sides gear teeth 120a of water cooling template 120, thereby can move upward at upper and lower.Guide gear 184 is mounted to and gear 182 engagements regularly.
Be connected with driving arrangement,, thereby control the motion of water cooling template 120 exactly in order to the anglec of rotation according to external signal adjusting gear 182.Gear 182 and guide gear 184 all have multistage, with the transmission of control driving force.
When guide gear 184 is fixed and during gear 182 rotation, gear 182 and water cooling template 120 be motion together on above-below direction.
Operation according to the die assembly of the 4th example of the present invention will be described below.When driving arrangement makes gear 182 rotation according to external signal, gear 182 and move upward along guide gear 184 with the water cooling template 120 of gear 182 engagements, thus water cooling template 120 is separated with heated die plate 110.Electric current is supplied to electric heater 112, so that heated die plate 110 is heated.Therefore, operate described telecontrol equipment 140, so that core 130 contacts with 120 with chamber mould 110.
Between heated die plate 110 and core 130, limited chamber.Like this, moulding material is filled this chamber by injection canal 115.Owing to do not conduct heat to water cooling template 120, therefore prevent thermal loss, thereby improved heat transfer efficiency from heated die plate 110.
Be supplied to the electric current of electric heater 112 to be blocked.When driving arrangement according to external signal during in opposite direction to gear 182 supply revolving forces, gear 182 and move downward along guide gear 184 with the water cooling template 120 of gear 182 engagement, thus make water cooling template 120 compression springs 186 and contact with heated die plate 110.
Cooling agent is supplied by coolant channel 122, is used for water quench template 120, heated die plate 110 and injection molding product.Core 130 separates with 120 with chamber mould 110 by telecontrol equipment 140, thereby injection molding product can be removed.
Driving arrangement also stops to gear 182 supply revolving forces.Gear 182 and move upward with the water cooling template 120 of gear 182 engagement repulsive force by spring 186.Therefore, water cooling template 120 is separated with heated die plate 110.
Fig. 6 to Fig. 8 is that expression is applicable to the side cutaway view according to the different examples of the electric heater mounting structure of each example of die assembly of the present invention.
First example according to the electric heater mounting structure that is applicable to described die assembly, as shown in Figure 6, electric heater 112 with circular section is inserted into and is formed on imbedding among the groove 112h in the heated die plate 110, and heater housing 118 is installed in the space of imbedding groove 112h except the mounting portion of electric heater 112, is used to prevent that electric heater 112 from separating.
In order to improve heat-transfer effect, on the outside of electric heater (it is a hot line) 112, apply heat-transfer fluid, thereby form heat-transfer film 122a with high heat transfer efficiency.
Imbed the diameter of the degree of depth of groove 112h, and the width of imbedding groove 112h equals the diameter of electric heater 112 greater than electric heater 112.The lower surface of imbedding groove 112h is consistent with the lower surface of electric heater 112.
The bottom of heater housing 118 forms hemispherical, be formed on electric heater 112 when imbedding among the groove 112h and imbed space between the groove 112h corresponding to being inserted into when electric heater 112, and the top of this heater housing forms flat shape, thereby contour with the top surface of heated die plate 110.Preferably, heater housing 118 is made by the heat-transfer matcrial with high heat transfer efficiency.
Therefore, electric heater 112 be installed in imbed among the groove 112h after, heater housing 118 is press fit over to be imbedded among the groove 112h, to cover electric heater 112.Because electric heater 112 is embedded in groove 112h and heater housing 118 surrounds, therefore be not easy to take place segregation phenomenon.
In first example, the electric heater mounting structure is installed in the heated die plate 110, but also can be installed in water cooling template 120 and the core 130.This can be applicable to following example in the same way.
Be suitable for second example of electric heater mounting structure of described die assembly and its first example much at one.With reference to Fig. 7, the electric heater 112 with circular section is inserted into and is formed on imbedding among the groove 112h in the heated die plate 110.In order to prevent that electric heater 112 from separating, be inserted under the state of imbedding among the groove 112h at heat transfer powder 119, heat transfer powder 119 is molded by the heat of electric heater 112, thereby fills described space, forms seal.
Second example imbed identical among groove 112h and electric heater 112 and first embodiment, and therefore omit detailed description to them.
By applying heat, make to heat transfer powder 119 fusing of thermoplastic and solidify and make seal.The top interlocking of the bottom of seal and electric heater 112, and the top surface of its top and heated die plate 110 is contour.
The 3rd example according to the electric heater mounting structure that is suitable for described die assembly, as shown in Figure 8, heated die plate 110 is divided into two parts 110A and 110B on thickness direction, and imbed in the release surface that groove 112h and 112h ' be formed at two parts 110A of heated die plate 110 and 110B, thereby face mutually.Two the parts 110A and the 110B of heated die plate 110 are assembled or weld by screw thread, imbed among groove 112h and the 112h ' thereby electric heater 112 can be mounted to.
Because electric heater 112 has circular section, thus two parts 110A and 110B imbed groove 112h and 112h ' forms semicircle shape, thereby be assemblied in electric heater 112 around.The shape of imbedding groove 112h and 112h ' of two parts 110A and 110B is decided by the shape of electric heater 112.
That is to say that electric heater 112 is mounted to two parts 110A of heated die plate 110 and imbedding among groove 112h and the 112h ' of 110B, and two parts 110A and the mutual interlocking of 110B.The outside of electric heater 112 closely is connected to imbedding on groove 112h and the 112h ' of two parts 110A and 110B.Therefore, electric heater 112 can easily firmly be installed.
Though described the preferred embodiments of the present invention, it should be understood that the present invention is not limited to these preferred embodiments, but can carry out various changes and modification in the spirit and scope of the present invention that those skilled in the art require below.
Industrial applicability
According to die assembly of the present invention, with the chamber mould of core interlocking in, the water cooling template can Separate with heated die plate. When being injected into, moulding material is formed between heated die plate and the core In the chamber and when being injected moulding, the water cooling template from the heated die plate of high temperature to low temperature is not Thermal loss takes place, and does not namely conduct heat. Therefore, form described chamber each mould one Individual surface remains high temperature, to improve in appearance the surface of injection molding product. In addition, Cool off in the required time, process to carry out various manufacturing processing.
And, in the chamber mould that comprises heated die plate and water cooling template, electromagnet and permanent magnet, Guiding piece and servomotor, guiding piece and hydraulic/pneumatic equipment, or various gear is installed in heating Between template and the water cooling template, so that the water cooling template is according to the external signal contact or away from adding The hot-die plate. Even the described die assembly of long-time operation in the situation of high pressure, the water cooling template Also can stably contact or move away from heated die plate according to external signal, thereby improve durability And reliability.
In described die assembly, imbed groove and be formed in the mould to be assemblied in one of electric heater Around the end, and heater housing is inserted into and imbeds in the groove or the heat transfer powder is filled in and imbeds in the groove, Fusing and curing are to surround the other end of electric heater in imbedding groove. Therefore, electric heater can To fix with being stabilized. In addition, the mould through-thickness is divided into two parts, and imbeds groove Be formed on facing in the part of two parts. Electric heater be installed in imbed in the groove after, With two component assembles of mould together. As a result, assembling process is simplified, thereby improves Productivity ratio.
Claims (15)
1, a kind of die assembly comprises:
Heated die plate is used for limiting at its front surface place the part of moulding chamber, and electric heater is embedded in this heated die plate;
The water cooling template, the rear surface that it contacts the rear surface of described heated die plate or leaves described heated die plate, and have water cooling passageway in inside;
Core, this core and the chamber mould interlocking that is made of heated die plate and water cooling template are used to limit described moulding chamber;
Telecontrol equipment is used to make described chamber mould and described core relatively to move, to open and close described chamber; And
Be positioned at the fixed head on the side relative with described core, wherein said heated die plate is fixed to described fixed head, and described water cooling template moves back and forth in the space between described heated die plate and described fixed head by opening/closing, thereby described water cooling template can contact described heated die plate or leave described heated die plate.
2, die assembly according to claim 1, wherein said opening/closing by with a plurality of, be symmetrical manner and be installed between described water cooling template and the described fixed head.
3, die assembly according to claim 1, wherein said opening/closing comprises:
Permanent magnet, it is fixed in the release surface of described water cooling template and fixed head any; With
Electromagnet, it is fixed in the release surface of described water cooling template and fixed head another.
4, die assembly according to claim 1, wherein said opening/closing comprises:
Guiding piece, this guiding piece are connected between the release surface of described water cooling template and fixed head; With
Servomotor is used for providing revolving force to this guiding piece.
5, die assembly according to claim 1, wherein said opening/closing comprises:
Guiding piece, this guiding piece are connected between the release surface of described water cooling template and fixed head; With
Hydraulic equipment is used for providing hydraulic pressure to this guiding piece.
6, according to each described die assembly in the claim 1 to 5, wherein said heated die plate and water cooling template comprise and are used for moulding material is expelled to the indoor injection orifice of described forming cavity.
7, according to each described die assembly in the claim 1 to 5, wherein said electric heater is embedded in the release surface of described heated die plate, have the imbedding in the groove of respective shapes, and is useful on and prevents that seal that described electric heater separates is installed in described electric heater and imbeds wherein described imbedding in the groove.
8, die assembly according to claim 7, the outside of wherein said electric heater is coated with the heat-transfer fluid with high heat transfer efficient.
9, die assembly according to claim 7, wherein said seal is a heater housing, this heater housing have and when described electric heater be inserted into described when imbedding in the groove at described electric heater with imbed the corresponding shape of shape in the space that forms between the groove.
10, die assembly according to claim 9, the lower surface of wherein said heater housing have the corresponding shape of shape with a surface of described electric heater.
11, die assembly according to claim 10, the upper surface of wherein said heater housing are and the continuous flat surfaces in the rear surface of described heated die plate.
12, die assembly according to claim 7, wherein said seal describedly is provided at described electric heater when imbedding in the groove and imbeds heat transfer powder in the space that forms between the groove for being inserted into when described electric heater, and described seal by the heat of electric heater by moulding to fill this space.
13, die assembly according to claim 12, the top surface of the heat transfer powder of wherein said moulding are and the continuous flat surfaces in the rear surface of described heated die plate.
14, die assembly according to claim 7, wherein said heated die plate is divided into two parts along thickness direction, and described electric heater is imbedded in the release surface that is formed on these two parts and imbedded in the groove with opposed facing.
15, die assembly according to claim 14, wherein said two parts imbed groove on the outside that closely is connected to described electric heater under the connection status of described two parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060043746A KR100792077B1 (en) | 2006-05-16 | 2006-05-16 | Die assembly |
| KR1020060043746 | 2006-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101073910A CN101073910A (en) | 2007-11-21 |
| CN100560329C true CN100560329C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101041117A Expired - Fee Related CN100560329C (en) | 2006-05-16 | 2007-05-16 | Die assembly |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100792077B1 (en) |
| CN (1) | CN100560329C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101150491B1 (en) * | 2009-12-21 | 2012-05-31 | 삼성전기주식회사 | Metallic Pattern |
| CN101823325B (en) * | 2010-05-18 | 2012-08-15 | 山东大学 | Electrically-heating and floating type rapid thermal circulation injection mould |
| CN103180119B (en) * | 2010-08-05 | 2016-09-07 | 福特全球技术公司 | Foamed resin Coinjection molding apparatus and method |
| JP5107417B2 (en) * | 2010-12-24 | 2012-12-26 | 株式会社キャップ | Molding apparatus and molding method using the molding apparatus |
| KR101876373B1 (en) * | 2011-05-20 | 2018-07-11 | 삼성전자주식회사 | Injection mold apparatus |
| JP5722154B2 (en) * | 2011-07-26 | 2015-05-20 | 住友重機械工業株式会社 | Injection molding machine |
| JP5722153B2 (en) * | 2011-07-26 | 2015-05-20 | 住友重機械工業株式会社 | Injection molding machine |
| JP5839482B2 (en) * | 2012-05-29 | 2016-01-06 | 住友重機械工業株式会社 | Injection molding machine |
| WO2014127310A2 (en) | 2013-02-14 | 2014-08-21 | Li Nathan Y | Molded dental root canal filling points/cones and process of making same |
| KR101658767B1 (en) | 2015-01-27 | 2016-09-22 | 한국타이어 주식회사 | Molding apparatus for fuel cell separator and the fuel cell separator using the same and fuel cell using the same |
| KR102073818B1 (en) * | 2018-01-16 | 2020-02-25 | (유)원테크 | Heater magnet for extrusion die and process for extruding production |
| CN109278217A (en) * | 2018-11-14 | 2019-01-29 | 深圳市陆博新材料有限公司 | A kind of heater integrated molding mould |
| CN109849276B (en) * | 2019-02-26 | 2021-05-18 | 宁波喆昊模具有限公司 | High-pressure probe precision injection molding die applied to X-ray equipment |
| CN113617962A (en) * | 2021-06-28 | 2021-11-09 | 安徽裕盛包装有限公司 | Tinplate can processing is with detaining end spiral device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177640A (en) * | 1991-12-27 | 1993-07-20 | Ricoh Co Ltd | Temperature control structure of mold |
| JP4024714B2 (en) * | 2002-06-18 | 2007-12-19 | 株式会社名機製作所 | Control method of press forming apparatus and press forming method |
| JP2004216585A (en) | 2003-01-09 | 2004-08-05 | Asahi Matsushita Electric Works Ltd | Vacuum forming mold apparatus |
-
2006
- 2006-05-16 KR KR1020060043746A patent/KR100792077B1/en not_active IP Right Cessation
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- 2007-05-16 CN CNB2007101041117A patent/CN100560329C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| CN101073910A (en) | 2007-11-21 |
| KR20070110991A (en) | 2007-11-21 |
| KR100792077B1 (en) | 2008-01-04 |
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