JP2003231165A - Mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin molding die with high energy efficiency which is realized by shortening a molding cycle while achieving the high precision of a resin finished product. <P>SOLUTION: The resin molding die 1 for molding a resin molded product comprises a main mold 23, an insert member 30 which is assembled into the main mold 23 and transfers the shape of a resin finished product, a heating block 41 which can come into contact with and be set apart from the insert member 30, a heating means for heating the heating block 41 and a cooling means for cooling the cooling block 42. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
Related to molds used for injection molding of resin products such as
In particular, mold surface temperature control for heating and cooling the cavity mold surface
It relates to a mold with a devised step. Generally, a mold for molding a thermoplastic resin
(Hereinafter also simply referred to as “mold”) is a raw material for resin products.
Depending on the curing temperature of the resin, temperature control such as preheating and cooling is achieved.
Is done. Mold temperature is used to increase the accuracy of resin products.
The mold surface transferability is superior when the resin solidification temperature is higher.
It is. In particular, light guide plates and lenses for liquid crystal displays
If you are going to produce optical parts with resin,
Therefore, the mold temperature during molding is an important factor.
Become prime. However, if the mold temperature is raised,
It takes time to cool down to the temperature at which
There is a problem that becomes longer. Therefore, traditionally, good
In order to achieve both good transferability and a short molding cycle,
A method that raises or lowers the temperature during one cycle is used.
The For example, Japanese Patent Laid-Open No. 7-144353 discloses
In the temperature control structure of the described mold, a high-temperature heat medium flows.
The temperature control block to be in contact with the back of the mold through the heat transfer plate
When heating the mold and cooling the mold
Is the temperature control block, the heat transfer plate, and the back of the mold.
Separate the mold and pass a low-temperature heat medium between the back of the mold and the heat transfer plate.
I try to make it flow. And doing this
Temperature control blower for heating when cooling the mold
Heating and cooling efficiency without cooling the rack.
ing. In the conventional resin mold,
Multiple media passages surround the cavity around the body
For example, during heating, these medium passages are formed in
For example, high temperature steam can be circulated as a high temperature heat medium to
Temperature up to the molding temperature (about 150 ° C) or during cooling
The product is taken out by circulating a low-temperature heat medium such as cooling water.
The mold can be heated and cooled by lowering the temperature.
Is being rejected. [0005] However, the prior art
In the mold, not only near the transfer surface for molding resin products,
Heat and cool extremely large volume parts including the surroundings
There was a need to do. Therefore, to heat and cool the mold
A large amount of heat needs to be transferred and at a given temperature
As a result of the time it takes to reach, the molding cycle is still long.
There was a problem of hanging. Also, JP-A-7-144
In the invention described in Japanese Patent No. 353, temperature control is performed after injection molding.
Although it is supposed to separate the blocks, molten resin
The heat left in the mold and heat transfer plate is cooled and discarded.
It is thought that Thus, the next cycle
Heat transfer with new heat without reusing molten resin heat
It is necessary to heat the plate and mold, which is preferable for energy efficiency.
I didn't. In addition, the above-described conventional resin molds have special features.
In addition, because water is used for cooling the mold,
Therefore, various accessories are installed around rust and outside the mold.
It also has an adverse effect on varieties. Moreover, after water leakage or cooling
Various ideas for water recovery equipment or waste liquid treatment
Necessary. Also, water scale adheres to the medium passage piping.
And the cooling efficiency of the mold deteriorates and the pipes are easily clogged.
Therefore, the frequency of regular maintenance increases. Accordingly, the present invention solves the above-described problems.
Short molding cycle while achieving high accuracy of resin products
Combing and providing energy efficient molds is the first
Let it be an issue. The present invention also provides a mold using a liquid medium.
In addition to eliminating the inconvenience of temperature control,
There is no need for heat / low temperature heat recovery equipment and waste liquid treatment measures.
To improve the heating and cooling efficiency of the cavity mold surface.
Luggage efficiency is improved and mass production is shortened by shortening the molding cycle.
Providing molds that can be improved
Is a second problem. [0009] [Means for Solving the Problems] The first problem is solved.
Therefore, in the present invention, the main mold and the main mold are incorporated.
This is a mold consisting of a nested member that transfers the shape of a resin product.
And a temperature control means for heating and cooling only the nesting member.
It is characterized by having. "Mold" is partly a mold
Non-genus materials may be used. Thus, a mold for transferring the shape of a resin product
When the part is composed of nested members,
It is only necessary to heat and cool the nested member alone,
Control the mold to a predetermined temperature with only a small heat transfer
Can do. Of course, between the nested member and the main mold,
Although it is not without transmission, even a slight clearance,
Less heat transfer compared to one-piece mold
Nested parts required for molding are quickly and highly energy efficient.
The temperature can be controlled at a rate. Of course, the main model is complemented.
An auxiliary heating / cooling means may be provided. Nested part
The material can be molded into the entire product between a pair of molds.
In addition, it should be configured to include the entire transfer surface of the product.
That's right. As a specific configuration of the mold having such a configuration,
Is a heating block that can be contacted and separated from the nesting member.
And a cooling block that can contact and separate from the nesting member.
A heating means for heating the heating block;
And a cooling means for cooling the cooling block.
It is desirable to do. In this way, the container that is part of the mold
The heating block and cooling block are brought into contact with the child member, and gold
By quickly heating and cooling the mold surface required for the mold, the mold surface can be quickly
Heating and cooling can be performed. In the mold
Is at least one of the boundaries between the main mold and the nesting member
Form a gap in the part to insulate between the two or the front
It is also possible to provide a heat insulating material between the main mold and the nesting member
it can. In this way, the boundary between the main mold and the nesting member
By forming a gap at least in part,
More air is interposed between the nesting members
Heat transfer to the main mold, and only the nested member is heated.
Only the necessary parts can be heated and cooled by cooling.
The In addition, a place where a heat insulating material is provided between the main mold and the nesting member
In the same way, heat transfer from the nesting to the main mold is similarly prevented,
Heating and cooling only the nested member
Can only be heated and cooled. Thus, air or
Heat transfer coefficient between main mold and nesting member is small due to heat insulating material
If it becomes shorter, improve the responsiveness of the heating and cooling cycle
Mold temperature control with high energy efficiency
It can be performed. Furthermore, in the mold in which the gap is formed,
The gap is formed between the main mold and the nesting member.
One that inserts the nesting member provided on either side into the main mold
A first plurality of grooves along the direction and the first groove formed on the other
A plurality of second grooves intersecting with the plurality of one grooves
It is more desirable to configure. Thus, at the boundary between the main mold and the nesting member,
A plurality of grooves that are continuous in serrations.
By providing in the direction to be inserted, the main mold and the nesting member
There are very few parts that come into contact with or close to each other.
Good thermal insulation between the lever member and the main mold, and more responsiveness
Good temperature control of the mold with high energy efficiency
Can do. Also, when heating the nesting member
Separates the cooling block from the nesting member
Together with the heating block in contact with the nesting member
When cooling the nesting member,
And the cooling member is spaced apart from the nesting member
Configure the mold so that the block contacts the nesting member.
It is desirable to make it. Thus, the heating block and the cooling block are
Of the heating block during heating.
Only the lock is brought into contact with the nesting member.
Only the lock is brought into contact with the nesting member. That
Heat transfer from the heating block to the cooling block
In addition, the mold temperature can be controlled with high energy efficiency.
Yes. The heating block and cooling block are heat conductive.
It is made of a material with a high rate, and the heat is increased as much as possible.
It is desirable to increase the capacity. To do this
Cycle the heating and cooling of the nesting member faster.
Can speed up. In the present invention, the heating block is also provided.
Before contact with the nesting member before molding the resin product.
To heat the nesting member and to make contact during resin molding.
By continuing to touch, it absorbs the heat of the molding resin and
When the temperature of the hook reaches a peak,
The cooling block is controlled to be spaced apart and the heating block
After the block is separated, the front to cool the nesting member
And the temperature of the nesting member
The temperature was cooled down to the removal temperature of the molded resin product
Sometimes controlled to move away from the nesting member
More preferably, it is configured. Thus, even during resin molding, the heating block
If it is in contact with the nesting member, it will be injected into the mold at high temperature.
The heat of the molten resin moves toward the heating block.
If left as it is, the nesting member and the heating block
When the temperature of the n
The heat transfer to the rack is finished, and then heat is released to the main mold.
It is naturally cooled by baldness. Therefore, the heating block
When the temperature reaches the peak, insert the heating block.
If it is separated from the heat, the heat that the molten resin had
Away from the nesting member with the most accumulated in the heating block.
The heat can be maintained. Also nested
After cooling the part with the cooling block, put it in the next cycle
When heating the child member, the accumulated previous cycle
The heat of the molding resin can be used to heat the nesting member
Can control the temperature of the mold with high energy efficiency
be able to. In the above-described mold, the main mold
Made of a material having a lower thermal conductivity than the nesting member.
This reduces the outflow and inflow of heat from the nest to the main mold,
It is possible to control the mold temperature with higher energy efficiency.
Yes. For example, when steel is used for the nesting member,
Steel, such as glass, ceramics, stainless steel, etc.
It is desirable to use a material with lower thermal conductivity. The nesting member is formed of the resin product part.
Using a material with excellent processability near the transfer surface to transfer the minute
The other part is the heating block or cooling block.
A material with excellent thermal conductivity to provide a heat flow path between
A composite consisting of two or more materials with a heat transfer part using quality
A structure is more preferable. Excellent transferability near the transfer surface
The material that needs to be made is the precise shape and surface of the product.
It is for finishing well, and other heat transfer parts are thermally conductive
Excellent material is a nesting member and heating block or
Do we need to quickly transfer heat to and from the cooling block?
It is. The superiority or inferiority of workability and thermal conductivity here is
At least by comparison between materials used in composite structure
However, all materials must have excellent thermal conductivity.
It goes without saying that it is desirable. In order to solve the first problem described above,
Therefore, in the present invention, the main mold and the resin made in the main mold
The nesting member for transferring the product part and heating the nesting member
Heating means for cooling, and cooling means for cooling the nesting member
A heat exchange inside the nesting member
Forming a chamber on the product transfer part formed by the nesting member
Before injecting the molten resin, a high-temperature heat medium is put into the heat exchange chamber.
Filling and transferring the heat of the high temperature heating medium to the nesting member.
To preheat the nesting member and transfer the product
After the molten resin is injected into the part, the molten resin
The high-temperature heat medium that has absorbed heat is discharged from the heat exchange chamber.
It is configured to be configured as described above. Thus, the heat exchange chamber is placed inside the nesting member.
Product transfer formed by nesting members by forming
Before injecting molten resin into the part, heat
Fill the medium and transfer the heat of the high-temperature heat medium to the nested member.
So that the nested member can be preheated quickly.
The In addition, after the molten resin is injected into the product transfer part,
The high-temperature heat medium that absorbs the heat of the molten resin is discharged from the heat exchange chamber.
To reduce the overall heat capacity of the mold.
Therefore, the time for cooling can be shortened.
Therefore, the molding cycle can be greatly shortened.
The Also, a transfer surface for molding a resin product is nested.
Consists of members, and only the nested member is out of the mold
It is only necessary to heat and cool, so the mold can be transferred with as little heat as possible.
Can be controlled to a predetermined temperature. Of course, put
Although there is no heat transfer between the child member and the main mold,
Less heat transfer compared to one-piece mold
Just do it. In addition, the nesting member is between the pair of molds,
Transfer surface of resin product so that the entire resin product can be molded
It is desirable that the size includes the entire size. Also, the high temperature heat medium discharged from the heat exchange chamber
Is stored in an adiabatic state and is nested in the next molding cycle.
It is configured to fill the heat exchange chamber when preheating
You can also. According to the mold configured as described above, heat exchange is performed.
The high-temperature heat medium discharged from the exchange chamber is installed outside the mold.
Insulated so as not to dissipate heat in the high-temperature heat medium supply device
And heat the nesting member in the next molding cycle
The heat exchange chamber is filled again. Therefore, molten tree
A high-temperature heat medium that absorbs the heat of fat is added in the next molding cycle.
It can be used again when pre-heating the lever members
Thus, the energy efficiency in the temperature control of the mold is increased. The main mold has a thermal conductivity higher than that of the nesting member.
If the material is made of a low material, heat flow from the nesting to the main mold
Outlet and inflow are reduced, and mold temperature control with higher thermal efficiency
You can do it. For example, steel is used for nesting members
The main molds are glass, ceramics,
Use a material with lower thermal conductivity than steel such as Tenres
desirable. In order to solve the second problem described above, this book
The invention corresponds to the mold body and the cavity mold surface of this mold body
The hollow part formed in the site to be installed and installed in this hollow part
Mold surface temperature control that controls the temperature of the cavity mold surface.
And the mold surface temperature control means faces the hollow part.
Force the medium toward the opposite side corresponding to the cavity mold surface
And the injection nozzle that ejects gas in a gas state
A medium introduction passage for supplying the medium to the cartridge, and a jet in the hollow portion.
Medium for discharging the medium after temperature control to be discharged to the outside
And a lead-out passage. That is, the mold according to the present invention has the above structure.
By making it, the medium in the gaseous state from the injection nozzle
When ejected, the facing side is forced to the cavity mold surface of the mold body
It is heated and cooled automatically. For this reason, it is
Heating / cooling efficiency of the corresponding part is increased. Also medium
Is ejected in a gaseous state, so the medium after heating and cooling
Can be released into the open air as it is. The present invention also provides a mold surface in the mold.
The use of compressed air as the medium for temperature control means
Features. That is, the present invention is configured as described above.
When the compressed air is ejected from the ejection nozzle,
The volume suddenly expands, and so-called adiabatic expansion
The temperature drops. And at this reduced jetting temperature, the mold
While the opposite side of the cavity mold surface of the main body is cooled,
The heat conduction cools the cavity mold surface of the mold body.
The This allows the cavity mold surface of the mold body to be energy efficient.
It can be cooled efficiently. Furthermore, the present invention provides a mold according to the above mold.
Using a highly volatile liquid as the medium for the surface temperature control means,
Sprayed with a spray nozzle, vaporized and ejected
It is characterized by. That is, the present invention is configured as described above.
As a result, highly volatile liquid is sprayed from the spray nozzle.
When vaporizing, the latent heat of vaporization is deprived and the ejection temperature is reduced.
descend. And at this reduced jetting temperature,
The opposite side of the cavity mold surface is cooled and the heat
The cavity mold surface of the mold body is efficiently cooled by conduction.
The This allows the cavity mold surface of the mold body to be energy efficient.
It can be cooled efficiently. Furthermore, the present invention provides the above-mentioned odor.
As a medium for the mold surface temperature control means, compressed air and volatile
Compress liquid with high volatility using gas mixture with high liquid
Vaporize by spraying with air and spraying with air
It is characterized by. That is, the present invention is configured as described above.
When the compressed air is ejected from the ejection nozzle,
The volume suddenly expands, and so-called adiabatic expansion
The temperature drops. In addition, highly volatile liquids are
Evaporation latent heat is generated by vaporization when sprayed
And the ejection temperature decreases. And this reduced jet temperature
The cavity side of the mold body is cooled more efficiently
The cavities of the mold body are
The mold surface is cooled. This allows the mold body cavity
The mold surface can be cooled in an energy efficient manner. Further, according to the present invention, in the mold, the mold
As a medium for the surface temperature control means, hydrogen gas (H ₂ Or
It is characterized by using helium gas (He). That is, the present invention is configured as described above.
Or hydrogen gas or helium gas at room temperature
In the air, it has a negative Joule-Thomson coefficient
Therefore, from a high pressure region (for example, 50 atmospheres) to a low pressure region (for example,
For example, the temperature rises when jetted to 1 atm. to this
More, facing the hollow part corresponding to the cavity mold surface of the mold body
As the side is heated, the heat conduction causes
The cavity surface is efficiently heated. Furthermore, the present invention provides the above-mentioned odor.
The opposite side of the hollow part corresponding to the cavity mold surface of the mold body
It is characterized by providing a heat absorber. That is, the present invention is configured as described above.
With the heat absorber between the opposite face of the cavity mold surface
Heat exchange is promoted, improving energy efficiency and molding molding.
The improvement of the curl can be achieved. This allows the mold body cavity
It can enhance the heating and cooling effect of the mold surface.
The Here, the heat absorber is a cavity in contact with the medium.
Increase the surface area of the mold face to increase heat exchange with the media
It has a function to make For example, the cavity mold surface
Forms such as providing fins on opposite sides or forming uneven parts
Facing the cavity mold surface during heating / cooling
That promotes heat exchange. Further, the present invention provides a mold book in the mold.
The part corresponding to the cavity mold surface of the body is formed with a nested member
It is characterized by that. That is, the present invention is configured as described above.
And without the mold body itself being heated / cooled.
By simply forcibly heating and cooling the child parts locally,
It is possible to heat and cool the mold surface. Furthermore, the present invention provides the above-mentioned mold smell.
The nesting member has a higher thermal conductivity than the mold body.
And features. That is, the present invention is configured as described above.
And outflow and inflow of heat from the nesting member to the mold body
Mold body cavity mold with less heat and higher thermal efficiency
The surface is cooled. In this case, the material of the mold body is an example
For example, glass, ceramics or stainless steel is preferred.
While it is used appropriately, the material of the nesting member is, for example,
For example, the thermal conductivity of beryllium copper (BeCu) etc.
Higher materials are preferably used. The present invention also provides a method for injecting the mold in the mold.
The nozzle is a different medium depending on the thickness distribution of the resin product.
Have multiple nozzles that eject
Features. That is, the present invention is configured as described above.
The cavity mold surface of the mold body is the thickness of the resin product.
Cools uniformly evenly according to the legal distribution. For example, tree
Medium ejected from jet nozzle for thick part of fat product
Or increase the flow rate of the medium relative to the thin part.
Or lower. In short, the feature of the present invention is that
In the mold surface temperature control means, heating /
It is designed to perform cooling switching operation control.
The DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] Next, the present invention will be described.
Detailed description of the embodiments with reference to the drawings as appropriate
Explained. In the embodiment of the present invention, a mold
As an example, a resin mold will be described. Figure 1 shows the
Sectional perspective view of a resin molding die according to the first embodiment of the bright,
2 is a cross-sectional view taken along line XX of FIG. In this embodiment
The gold used when the lens is molded by injection molding.
Assume type. Gates, ejector pins, etc.
Illustration is omitted. As shown in FIGS. 1 and 2, the resin mold 1
The mold body 2 and the nesting member 3 incorporated in the mold body 2
0 and a heating / cooling mechanism for controlling the temperature of the nesting member 30
It is comprised. In FIG. 1, only one type is used.
As shown, molds with the same configuration face each other during resin molding.
Attached to the platen of an injection molding machine (not shown)
And the molten tree in the cavity formed between the two molds
The shape of the cavity is transferred by injecting oil
A resin product is molded. The mold body 2 is for attaching to the platen.
A mounting plate 21 serving as a substrate and an injection fixed to the mounting plate 21
A receiving plate 22 that receives the pressure of the resin during molding, and the receiving plate 22
A mold 23 that is fixed to the mold and forms a resin product
It is composed of. In the present embodiment, the input
The sub member 30 forms a cavity for modeling a resin product.
As a result, the template 23 has a portion that takes the shape of a resin product.
Not done. Further, the template 23 is the main claim in the claims.
Corresponds to the type. The template 23 is formed in a box shape, and the receiving plate 22
A space for heating and cooling mechanism is formed between the two. Ma
The template 23 is a nesting member in the center of the mold matching surface 23a.
A circular through hole 23b through which 30 is inserted is formed.
The The nesting member 30 is a lens that is a resin product.
A nested mold that forms a cavity C that is a female mold of the shape
is there. The nesting member 30 is inserted into the through hole 23b of the template 23.
It has a cylindrical shape with a diameter that is passed through and incorporated.
The upper end surface 30a of this is a concave surface forming the cavity C
Yes. The lower end surface 30b of the nesting member 30 is the receiving plate
22 and the pressure of the molten resin at the time of injection molding is received by the receiving plate 2
Can be received at 2. Nested member 30 and main
It is fitted with the template 23 which is a mold so that there is no backlash.
However, there is a slight gap between the two
Compared to the case where the plate 23 and the nesting member 30 are integrated.
Furthermore, heat is difficult to transfer between the two. Nested material
30 is smaller than the template 23, so the heat capacity is small,
The amount of heat transfer required for heating and cooling is small. In addition,
The nesting member 30 is composed of the resin in the cavity C and the additive described later.
Is it a heat path between the heat blocks 41 and 41?
Therefore, it is desirable to use a material with high thermal conductivity.
In addition, the template 23 as the main mold does not need to be heated or cooled.
Therefore, a material with as low a thermal conductivity as possible, at least
It is comprised with the material whose heat conductivity is smaller than the nesting member 30.
Is desirable. The heating / cooling mechanism takes advantage of the internal space of the mold body 2.
It is configured for use. In the interior space of the mold body 2
A pair of heating blocks 4 having a larger heat capacity than the child member 30
1 and 41 and a pair of cooling blocks 42 and 42 are stored.
ing. The pair of heating blocks 41, 41 are nested members
30 is arranged at the counter electrode with the center. Each
The heat blocks 41 and 41 are made of a material having good thermal conductivity, for example,
Nested in a cylindrical shape composed of metal blocks
With air cylinder 45a so that it contacts and separates from the material
It is configured to be slidable. Heat block
41, 41 are in close contact with the outer peripheral wall 30c of the nesting member 30.
A concave peripheral wall 4 corresponding to the outer peripheral wall 30c so as to be able to
1a. A pair of cooling blocks 42 and 42 are also added.
As with the heat blocks 41, 41, the nesting member 30 is at the center.
As a material with good thermal conductivity, such as gold
A block composed of a genus is inserted by an air cylinder 45b.
Sliding movement is possible to contact / separate the child member
It is configured. The cooling blocks 42, 42 are
So that it can be in close contact with the outer peripheral wall 30c of the nesting member 30.
It has a concave peripheral wall 42a corresponding to the peripheral wall 30c.
The The heating blocks 41 and 41 and the cooling block 4
2 and 42 should be separated from the template 23, respectively.
Thus, no energy is generated by heating and cooling the template 23.
Waste is prevented. FIG. 3 is a schematic diagram of the heating / cooling mechanism. Figure
3, the nesting member 30, the heating block 41,
41 and cooling blocks 42, 42 are respectively temperature sensors.
46a, 46b, 46c are provided,
In order to control the temperature of each temperature sensor 46a, 46b,
46 c is connected to the temperature control device 48. The heating blocks 41 and 41 include a liquid heat medium.
A heat exchange passage 41n through which the body flows is formed, and this heat exchange
Heated to high temperature from high-temperature heat medium supply device 43 in exchange passage 41n
The heated heat medium is heated by being introduced. Temperature control
The device 48 includes a temperature sensor 46 for the heating blocks 41, 41.
In response to the temperature signal from b, the heat exchange passage 41 of the high-temperature heat medium
to operate the switching valve 43a provided in n.
Thus, the temperature of the heating blocks 41, 41 is controlled. In addition,
In the present embodiment, the high-temperature heat medium supply device 43 is claimed.
It corresponds to the temperature control means (heating means) for heating in the range of
The The same applies to the cooling blocks 42, 42.
In addition, a heat exchange passage 42n through which a liquid heat medium flows is formed.
The low-temperature heat medium supply device 44 is provided in the heat exchange passage 42n.
The heat medium cooled to low temperature is
It is. The temperature control device 48 is used for the cooling blocks 42, 42.
According to the temperature signal from the temperature sensor 46c,
The switching valve 44a provided in the heat exchange passage 42n is operated.
Control the temperature of the cooling blocks 42 and 42
To do. In the present embodiment, the low-temperature heat medium supply device 4
4 is a temperature control means for cooling (cooling hand)
Corresponds to step). The nesting member 30 has heating blocks 41 and 4.
1 or by contacting the cooling blocks 42, 42,
Heated or cooled by heat transfer. The temperature of the nesting member 30
The temperature control device according to the temperature signal from the degree sensor 46a
48 earns air cylinder 45a or air cylinder 45b
The temperature of the nesting member 30 is controlled by moving it. Example
For example, the heating blocks 41 and 41 are brought into contact with the nesting member 30.
The cooling blocks 42, 42 away from the nesting member 30.
If it makes it between, the nested member 30 can be heated.
Conversely, the heating blocks 41, 41 are separated from the nesting member 30.
The cooling blocks 42 and 42 are brought into contact with the nesting member 30
By doing so, the nesting member 30 can be cooled.
The The air cylinders 45a and 45b are driving means.
Any other type may be used, for example, a hydraulic cylinder or an electric motor
Combination of motor and ball screw, electromagnet, piezo element, etc.
Heating block 41, 41 or cooling block 42,
42 may be driven. As described above, the temperature control device 48 is provided with a temperature control unit.
Appropriate according to signals from degree sensors 46a, 46b, 46c
Judgment and air cylinders 45a, 45b and switching valve 4
3a and 44a may be controlled, and the conditions for resin molding are determined.
If so, the air cylinder 45 is moved at a predetermined timing.
a, 45b and switching valves 43a, 44a are controlled.
You don't mind. The resin mold 1 having the above-described structure is an injection mold.
The heating / cooling mechanism and the injection molding machine attached to the molding machine
Controlled by the control device that controls the whole as follows
Operates on. 4 uses the resin mold of this embodiment.
To show the injection molding cycle when resin is injection molded.
FIG. 5 is a flowchart, and FIG. 5 shows the resin molding of the present embodiment.
Temperature cycle of each part when resin is injection molded using a mold
The operating cycle of the heating block and heating block
It is a graph. FIG. 6 shows the heat flow in the resin mold.
(A) is a block diagram showing the heat of the molten resin.
(B) is the cooling block that cools the resin.
(C) Nesting with heat accumulated in the heating block
The state which preheats a member is shown. In each figure of FIG.
Are omitted from the cross-section. As shown in FIG. 4 and FIG.
At the beginning of the kuru, the heating blocks 41 and 41 are inserted
30 is brought into contact (ON), and cooling blocks 42 and 42 are inserted.
By separating (OFF) from the lever member 30 (stepping
S1), the nesting member 3 which is a mold constituting the cavity
0 is heated to a predetermined temperature and preheated (step S).
2). This preheating improves the transferability of the resin.
The temperature should be raised to a temperature higher than the temperature at which the solidifies. Ma
Further, the heat between the heating blocks 41 and 41 and the nesting member 30
Nest heating blocks 41, 41 to improve transmission
It is desirable to press against the member 30. The nesting member 30 is heated to a predetermined temperature.
If preheating is completed (step S3),
Fill the cavity with resin from the gate (step
S4). The molten resin 55 injected into the cavity is rapidly
And the heat of the molten resin 55 is applied to the nesting member 30.
And further from the nesting member to the heating blocks 41, 41
(See FIG. 6A). This allows the nesting part
The temperature of the material 30 and the heating blocks 41, 41 rises. Addition
As described above, the temperature rise of the heat blocks 41 and 41 is caused by melting.
The heat of the molten resin 55 has moved, in other words,
Due to the temperature rise of the heating blocks 41, 41, the molten resin 5
5 heat accumulated in the heating blocks 41, 41
Can do. The temperature of the heating blocks 41, 41 rises,
If the temperature reaches a peak (step S5),
The heat blocks 41, 41 are separated from the nesting member 30 and cooled.
The rejection blocks 42, 42 are brought into contact with the nesting member 30.
(Step S6), the mold is inserted through the nesting member 30.
The molten resin 55 in the tee is cooled (see FIG. 6B).
Thereby, the molten resin 55 is solidified, and the product-shaped solid and
Become. The resin cooling is complete (step S7) and the product is removed.
When the temperature reaches the maximum level, open the resin mold 1 and
The fat product is taken out (step S8). Thereafter, the operation from step S1 is repeated.
The In other words, the cavity is not filled with resin
The heating blocks 41, 41 are brought into contact with the nesting member 30.
The cooling blocks 42 and 42 are separated from the nesting member 30.
Let At this time, the heating block is the same as in step S2.
The heat of the hooks 41, 41 moves to the nesting member 30 and is nested
The member 30 is heated (see FIG. 6C).
The heat that moves is the heating block 41, 41 in the previous cycle.
The heat accumulated in the
A high-temperature heat medium is supplied from the heat medium supply device 43 and is nested.
The member 30 is heated. As described above, the resin of the present embodiment
According to the mold, the heat of the molten resin is applied to the heating blocks 41 and 4.
1 and the accumulated heat is preheated in the nesting member 30.
Temperature control of the resin mold 1 associated with injection molding
High energy efficiency. Resin mold 1
Includes a nesting member 30 and a template 23 forming a cavity.
Nested part with small heat capacity
It is only necessary to heat and cool the material 30 only.
Quick, low energy heating and cooling cycles
Can appear. Next, a modification of the present invention will be described.
In the following description, the first embodiment described above is used.
The same parts as those in FIG.
Is omitted. 7 to 9 show the nesting member and the heating block.
A cross-sectional view of a resin mold showing a modification of the cooling block
is there. [Second Embodiment] The second embodiment shown in FIG.
The resin mold 11 is the resin mold 1 of the first embodiment.
On the other hand, the nesting member 31 and the heating blocks 41, 41,
The manner of contact between the rejection blocks 42 and 42 is different. Nesting part
The material 31 is different from the nesting member 30 of the first embodiment.
An upper end surface 31 that has a short cylindrical shape and forms a cavity C
of the heating blocks 41, 41 at the lower end surface 31b opposite to a.
It is comprised so that the upper surface 41b may be contacted. Heating blower
The racks 41 and 41 are slid by the air cylinder 45a.
It moves and enters under the nesting member 31, and the lower end surface 31b
Contact with the base material 31
Separated from the lever member 31. The cooling blocks 42, 42 are also
Slided by air cylinder 45b, nested member
31 enters the lower end surface 31b and the cooling block 4
2 and 42 are in contact with the upper surface 42b, and are under the nesting member 31?
It can be separated from the nesting member 31 by coming off.
It is made. By having such a configuration, the nesting part
Is the material 31 smaller and the heat capacity reduced?
In addition, the responsiveness is good when performing heating and cooling cycles.
Energy efficiency is also increased. [Third Embodiment] The third embodiment shown in FIG.
The resin mold 12 according to the embodiment is the same as that of the second embodiment.
The lower end surface 32b of the nesting member 32 with respect to the resin mold 11
Is a slope, for example, a quadrangular slope, and the heating block 4
1, 41 also includes a heat transfer slope 41c parallel to the lower end surface 32b.
And slide movement of heating blocks 41, 41, etc.
As a result, the lower end surface 32b and the heat transfer slope 41c are brought into contact with and separated from each other.
It is configured to be between. Cooling blocks 42, 42
Similarly, a heat transfer slope 42c parallel to the lower end surface 32b is formed.
The lower end surface 32b and the heat transfer slope by sliding movement
It is comprised so that 42c may contact and space apart. this
By adopting such a configuration, the nesting part of the second embodiment
As with the material 31, the heat capacity of the nesting member 32 is reduced to reduce energy.
Energy efficiency can be increased. Also, the tree of the second embodiment
In the fat molding die 11, the heating blocks 41, 41, etc. are long distances.
If it does not slide apart, can it not be separated from the nesting member 31?
In contrast, the resin mold 12 of the present embodiment has a heating block.
Nesting with only a slight slide movement of lock 41, 41, etc.
Because it is separated from the member 31, more heating and cooling cycle
Responsiveness can be improved. [Fourth Embodiment] The fourth embodiment shown in FIG.
The resin mold 13 according to the embodiment is the same as that of the first embodiment.
The resin molding part of the nesting member 33 with respect to the resin molding die 1
Excellent transferability near the transfer surface to be transferred, that is, near the cavity
The molded part 33a using the selected material and other parts
That is, the portion between the molding portion 33a and the receiving plate 22 has excellent thermal conductivity.
The heat transfer section 33b is made of the above material. Molding
The part 33a and the heat transfer part 33b are in close contact by welding or the like.
Therefore, it is desirable to improve heat transferability. this
According to the resin mold 13 configured as described above, the quality of the resin component
The molding part 33a that affects the
Therefore, it should be excellent in surface roughness, shape accuracy, etc.
At the same time, the heat transfer section 33b has excellent thermal conductivity.
So during heating and cooling cycle, resin and heating block
Alternatively, heat can be quickly transferred to and from the cooling block
Shortening the curl and contributing to lower product manufacturing costs
it can. The workability is, for example, machinability or mirror finish.
It is easy to manage. Next, the boundary between the nesting member and the template (main mold)
A modification of the part will be described. FIG. 10 and FIG.
It is sectional drawing which shows the modification of the boundary part of a nesting member and a template.
The [Fifth Embodiment] The fifth embodiment shown in FIG.
The form of the resin molding die 14 is the resin molding of the first embodiment.
Insulation between the nesting member 30 and the template 23 relative to the mold 1
Responsiveness and energy efficiency of heating and cooling cycle
The rate is increased. The resin molding die 14 is
About through-hole 23b, predetermined dimension from type | mold matching surface 23a
The diameter of the separated inner peripheral wall 23c is expanded, and the template 23 and the nesting member
A gap D is formed between 30 and 30 (boundary). This
Because of the gap D, the nesting member 30 and the template 23 are insulated from each other.
This makes it difficult for heat to move. Therefore, the nesting member 30
Heat of the part to be heated and cooled during the heating and cooling cycle
The smaller the capacity, the better the responsiveness and the energy
Lugi's efficiency is also improved. The tree of the fifth embodiment
In the fat molding die 14, the diameter of the through hole 23 b of the template 23 is increased.
As a result, the gap D was formed, but the diameter of the nesting member 30 was reduced.
By doing so, it is also possible to form the gap D. [Sixth Embodiment] As shown in FIG.
The resin molding die 15 of the sixth embodiment is the same as that of the fifth embodiment.
The method of forming the gap D of the state is changed. Nesting part
The material 35 is a boundary between the outer peripheral wall 35c and the template 23.
The dimple 35 comprising a plurality of spherical recesses
a is formed. By dimple 35a,
A gap D is formed between the nesting member 35 and the template 23.
It is. Accordingly, the nesting member 35 and the template 23 are formed by the gap D.
Is insulated and heat is difficult to move. Therefore, put
During the heating and cooling cycle of the child member 35, heating and cooling are performed.
Responsiveness is improved by reducing the heat capacity of
Also, energy efficiency is improved. The sixth implementation
In the resin mold 15 of the form, the outer peripheral wall of the nesting member 35
By forming dimple 35a on 35c, gap D
The inner peripheral wall 23c of the through hole 23b of the template 23 is formed.
Forming a gap D by forming dimples in
Both are possible. Also, the shape of the recess is limited to a spherical recess.
Even if it is a groove or irregular recess,
It is possible to achieve heat insulation between the material and the template 23. [Seventh Embodiment] As shown in FIG.
The resin molding die 16 of the seventh embodiment is the same as that of the fifth embodiment.
The method of forming the gap D of the state is changed. Nesting part
The outer peripheral wall 36c of the material 36 is predetermined from the upper end surface 36a.
From the lower part of the dimension to the range in contact with the template 23,
The nesting member 36 has a V-shaped cross section in the direction of insertion into the template 23.
A plurality of vertical grooves 36d (first plurality of grooves) are formed.
The The vertical groove 36d is like a serration.
Formed continuously over the entire circumference of the nesting member 36 in the direction.
It is. Further, the inner peripheral wall 23 of the through hole 23b of the template 23 is provided.
c is a position away from the mold matching surface 23a by a predetermined dimension.
A plurality of V-shaped cross sections in a direction perpendicular to the longitudinal groove 36d.
A lateral groove 23d (second plurality of grooves) is formed. this
In such a resin molding die 16, the vertical groove 36d and the horizontal groove 23d
Due to the gap D at the boundary between the nesting member 36 and the template 23,
It is further insulated and the heat becomes difficult to move. Therefore, put
During the heating and cooling cycle of the child member 36, heating and cooling are performed.
Responsiveness is improved by reducing the heat capacity of
Also, energy efficiency is improved. Also nested member
36 and the template 23 are in contact with each other at a plurality of points.
And the contact area is very small
The heat insulation is good and the nesting member 36 is inserted into the template 23.
Since the vertical groove 36d is formed along the direction of
Insert the nesting member 36 smoothly into the template 23.
You can enter. The vertical groove 36d and the horizontal groove 23d
Are formed on the nesting member 36 and the template 23, respectively.
A horizontal groove is formed in the nesting member 36, and a vertical groove is formed in the template 23.
It can also be made. Also, the horizontal groove is not perpendicular to the vertical groove,
For example, it may be formed in a screw shape. In this case, tappin
It can be processed by the process and is easy to process. [Eighth Embodiment] As shown in FIG.
The resin mold 17 according to the eighth embodiment is a nesting member.
30 and the template 23 are provided with a heat insulating material 51.
The The heat insulating material 51 is formed in a thin cylindrical shape, and the template 23
It is fixed to the inner peripheral wall 23c of the through hole 23b. Insulation
The material of 51 is at least more thermally conductive than the material of the template 23.
Use a low material. For example, the template 23 is made of steel.
In some cases, the insulation is stainless steel, ceramics, resin, etc.
It can be configured with, but because there is a temperature change, the template
23, a material with a small difference in coefficient of linear expansion from the nesting member 30
It is desirable to be. [Ninth Embodiment] FIG. 12 shows the first embodiment.
It is a modification of the heating means with respect to embodiment. First implementation
In the resin mold 1 in the form of
Supply a high-temperature heat medium to the heating blocks 41, 41.
However, in the resin mold 18 of the present embodiment,
Heating wires 52 are provided in the heating blocks 41, 41, and the electric wires
Electricity is supplied from the power supply device 53 to the heat wire 52.
Is. Thus, the heating means is the heating block 4.
What can heat 1,41
It can be anything, it can be beaten with a gas burner, or some kind of reaction
Change to other means such as heat or frictional heat.
Can be changed. Similarly, the cooling means is
Such as heat absorption during evaporation of liquids such as
Cooling means can be applied. [Tenth Embodiment] Next, a tenth embodiment will be described.
The embodiment will be described in detail with reference to FIG.
To do. In the following description, the first embodiment and
The same parts are denoted by the same reference numerals for detailed explanation.
Omitted. In the drawings to be referred to, FIG.
It is a longitudinal cross-sectional view of the resin mold which concerns on embodiment. As shown in FIG. 13, the resin mold 18 is
Mold body 2A and nesting member 3 incorporated in mold body 2A
7 and inside the nesting member 37,
High-temperature heat medium supply device provided outside the resin mold 18
43 and the heat exchange chamber 4 communicating with the heat exchange passages 6a and 6b.
Is formed. Also, between the receiving plate 22 and the template 25
Is a high-temperature heat medium (here, liquid
In order to prevent the body) from leaking, a sealing member 24 is provided.
It is. The nesting member 37 is provided in the cavity C.
The heat exchange chamber 4 formed inside the resin and the nesting member 37
Material with high thermal conductivity
It is desirable to compose with quality. On the contrary, the main template 2
5 is as hot as possible because there is no need to heat and cool
A material with low conductivity, at least than the nesting member 37
It is desirable to use a material with low thermal conductivity. The heat exchange chamber 4 is located inside the nesting member 37.
It is a hollow part that is formed by drilling into a fixed shape.
Heat exchange with the nesting member 37 by the high-temperature heat medium to be filled
Do. That is, the heat of the filled high-temperature heat medium is nested.
37 to preheat the nesting member 37,
High temperature heat that absorbed the heat of the resin injected into the cavity C
The heat capacity of the entire nesting member 37 by discharging the medium
Can be reduced. The shape of the heat exchange chamber 4 is particularly limited.
Although it is not, the upper end surface 37 of the nesting member 37 used as a transfer surface
In order to efficiently transfer heat to a, the upper end of the heat exchange chamber 4
4a and the upper end surface 37a of the nesting member 37 are thin.
It is desirable to be made. Also, the nesting member 37 is preheated.
When the nesting member 37 is removed from the upper end 4a of the heat exchange chamber 4,
If heat is not uniformly transmitted to the upper end surface 37a, the nesting member
Resin to be molded due to uneven temperature on the upper end surface 37a of 37
Adversely affect the product. Therefore, the upper end 4a of the heat exchange chamber 4
The heat is evenly transferred from the upper end surface 37a of the nesting member 37
The upper end portion 37c of the nesting member 37 is heat exchanged
Between the upper end 4a of the chamber 4 and the upper end surface 37a of the nesting member 37
It is desirable that the thickness of each be uniform. The heat exchange chamber 4 is provided through the receiving plate 22.
Installed outside through the installed heat exchange passages 6a and 6b.
The high-temperature heat medium supply device 43 is in communication. And enter
Before injecting resin into the cavity C of the lever member 37,
The high temperature heat medium supplied from the heat medium supply device 43 is heated.
The heat exchange chamber 4 is filled through the exchange passage 6a. This
At this time, the heat of the high-temperature heat medium L filled in the heat exchange chamber 4 enters.
It is transmitted to the lever member 37 to preheat the nesting member 37.
(See FIG. 16 (a)). Also, resin is poured into cavity C.
After entering, heat is put into the heat exchange chamber 4 by adding air.
The high-temperature heat medium filled in the exchange chamber 4 is discharged from the heat exchange chamber 4
To do. The high-temperature heat medium L filled in the heat exchange chamber 4 is
Since the heat of the resin R injected into the tee C is absorbed (FIG. 16).
(Refer to (b)), this high-temperature heat medium L is discharged from the heat exchange chamber 4
By doing so, the heat capacity of the entire nesting member 37 is reduced.
Can. High temperature heat medium discharged from heat exchange chamber 4
L passes through the heat exchange passage 6b and is supplied with a high-temperature heat medium supply device.
Return to 43. The high-temperature heat medium supply device 43 includes the nesting member 3.
When preheating 7, pressurized heated water, which is a high-temperature heat medium,
Supply to the exchange chamber 4. Then, the nesting member 37 is cooled.
Before storing the high-temperature heat medium L discharged from the heat exchange chamber 4
To do. That is, the high-temperature heat medium supply device 43 is made of molten resin.
It also serves to store a high-temperature heat medium that has absorbed heat.
The high temperature heat medium stored in the high temperature heat medium supply device 43 is as follows.
When the nested member 37 is preheated in a single molding cycle,
It is supplied to the exchange chamber 4. Therefore, high temperature heat medium supply device
The inside of 43 is cooled by releasing the stored high-temperature heat medium.
It is necessary to have a heat insulating structure so that nothing happens. Also, the heating and cooling of the nesting member 37 are performed.
To do so, the nesting member 37 is within the scope of the claims.
The heater 8 corresponding to the heating means and the claims
And a low-temperature heat medium flow path 9 corresponding to the cooling means.
Yes. The low-temperature heat medium flow path 9 is provided outside the resin mold 18.
The low temperature heat medium supply device 44 and the heat exchange passage 11a,
11b (see FIG. 14). For low temperature heat medium
Gas or liquid can be used, but here liquid
Using the body. When the nesting member 3 is heated, the heating means is used.
By operating a heater 8, the heat exchange chamber 4 is charged.
Nest with preheated heat transferred from the filled high-temperature heat medium
The member 37 is further heated to a predetermined temperature. In addition,
Here, a heater is used as the heating means, but it is not particularly limited.
Various means can be used. Further, when cooling the nesting member 37, the low
A liquid which is a low-temperature heat medium is caused to flow through the heat medium flow path 9, and the liquid
Take away the heat of the nesting member 37 with the heat of vaporization when the body vaporizes
The temperature is lowered to a predetermined temperature. Cooling means
Is not particularly limited, and various means are used.
be able to. For example, cooling is performed by heat transfer.
It can also be made. As explained above, the heat exchange chamber 4, high temperature heat
Medium supply device 43, heater 8, low-temperature heat medium flow path 9, low temperature
The heat medium supply device 44 heats and cools the nesting member 37.
The heating / cooling mechanism S is configured (see FIG. 14).
See). FIG. 14 is a schematic diagram of the heating and cooling mechanism. Less than
The configuration of the heating / cooling mechanism S will be described below. As shown in FIG. 14, the nesting member 37 has
A temperature sensor 213 is provided, and the temperature sensor 213 is provided.
Is a temperature control device for controlling the temperature of the nesting member 37
48. The temperature control device 48 is
The temperature of the nesting member 37 input from the temperature sensor 213
Based on the information, the switching valve provided in the heat exchange passage 6a
Provided in the heat exchanger passage 11a.
Each switching valve 212 is controlled. When the nesting member 37 is heated,
A degree control device 48 is provided in the heat exchange passage 6a.
Switching bar provided in the valve 7a and the heat exchange passage 6b
By operating the lube 7b, the high-temperature heat medium supply device 43
The high-temperature heat medium supplied from the inlet flows into the heat exchange chamber 4 and enters
The lever member 37 is preheated. And heat exchange chamber 4 has high temperature heat.
After the medium is filled, the temperature controller 48 is operated by the temperature sensor.
According to the temperature information input from 213, the heater 8 is made.
Until the temperature of the nesting member 37 reaches a predetermined temperature.
Heat with. When cooling the nesting member 3,
First, a temperature control device 48 is provided in the heat exchange passage 6a.
Provided in the switching valve 7a and the heat exchange passage 6b.
The heat exchange chamber 4 is filled by operating the switching valve 7b.
The produced high temperature heat medium is caused to flow out of the heat exchange chamber 4. So
After the high temperature heat medium is discharged from the heat exchange chamber 4, the temperature is controlled.
The control device 48 is connected to the temperature information input from the temperature sensor 213.
According to the information, the low-temperature heat medium supply device 4 is provided in the low-temperature heat medium flow path 9.
The low temperature heat medium supplied from 4 is allowed to flow and the nesting member
Cool until the temperature of 37 reaches a predetermined temperature. The resin mold 18 constructed as described above.
Is attached to an injection molding machine, and the heating and cooling mechanism S and
Controlled by a controller that controls the injection molding machine in an integrated manner.
It operates as follows. FIG. 15 shows the resin mold of FIG.
Injection molding cycle when resin is injection molded using
It is a flowchart to show. FIG. 16 shows resin molding.
It is a figure which shows the flow of the heat within a type | mold, (a) is a high temperature heat medium
Shows a state in which the nested member is preheated by the heat of (b),
This shows a state in which the heat of is transferred to the high-temperature heat medium. In addition, FIG.
In each figure of FIG. 6, the oblique line of the cross section is omitted. First, at the beginning of the injection molding cycle, FIG.
6 (a), the heat exchange chamber 4 is filled with the high-temperature heat medium L.
The heat of the high-temperature heat medium L is transferred to the nesting member 37.
By heating the nesting member 37 to a predetermined temperature,
Preheat (step S1). This preheating is the transferability of the resin
In order to improve the
It is desirable to raise the temperature at Subsequently, the nesting member 37
Is heated by the heater 8, and the nesting member 37 reaches a predetermined temperature.
(Step S2). The nesting member 37 reaches a predetermined temperature.
If preheating is completed by heating (step S3),
Fill the cavity C with resin from the gate not shown
(Step S4). Of the resin injected into the cavity C
The temperature comes into contact with the upper end surface 37a of the nesting member 37 and heats up.
Stolen and goes down rapidly. The heat of the resin R enters the nesting member 37.
After being transmitted, further from the nesting member 37 to the heat exchange chamber 4
It is transmitted to the filled high-temperature heat medium L (see FIG. 16B).
See). That is, the heat of the resin R is high through the nesting member 37.
It moves to the heat medium L and is accumulated. The filling of the resin R into the cavity C is completed.
(Step S5), the heat of the resin R is absorbed from the heat exchange chamber 4.
The collected high temperature heat medium L is discharged (step S6). Na
The completion of the filling of the resin R is determined by the temperature of the nesting member 37.
At the time of Subsequently, the low provided on the nesting member 37
The low temperature heat medium is allowed to flow through the heat medium flow path 9 to be cooled, and the nest portion
The material 37 is adjusted to a predetermined temperature (step S
7). The nesting member 37 cooled in this way.
Thus, the resin R in the cavity C is cooled. This
Thus, the resin R is solidified into a product-shaped solid. Heat exchange room
The high temperature heat medium L discharged from 4 is a high temperature heat medium supply device.
43 in a heat-insulated state, and entered in the next molding cycle.
When the lever member 37 is heated, the heat exchange chamber 4 is filled again.
It is. Cooling of resin R is completed (step S8) and the product is
When the temperature can be removed, open the resin mold 18
To take out the resin product (step S9). Thereafter, the operation from step S1 is repeated.
The In other words, the cavity C is not filled with resin.
In the state, the heat exchange chamber 4 is filled with the high-temperature heat medium L, and the nested member 3
7 is preheated. At this time, as in step S1,
The heat of the high-temperature heat medium L moves to the nesting member 3 and the nesting member
3 is preheated (see Fig. 4 (a)), but moves at this time
Heat accumulated in the high temperature heat medium L in the previous molding cycle.
Heat is used. That is, the heat absorbed from the resin
This is used when the lever member 37 is preheated. Also this heat
If not enough, the heater 8 is activated and the nesting member 37 is added.
heat. As described above, the resin of the present embodiment
According to the mold 18, the heat of the resin R is accumulated in the high temperature heat medium L.
The accumulated heat is reused for preheating the nesting member 37.
can do. Therefore, the nesting member 37 is preheated.
There is no need to newly heat the high-temperature heat medium L when
In the temperature control of the resin mold 18 accompanying the injection molding
High energy efficiency. In addition, the cooling of the nesting member 37,
After discharging the high-temperature heat medium that has absorbed the heat of the resin R
Thus, the heat capacity of the entire nesting member 37 can be reduced.
Yes. Therefore, the cooling time is shortened and the molding cycle is shortened.
Can be shortened. The resin molding die 18 has a cavity.
The nesting member 37 and the template 25 are formed separately.
Therefore, only the nested member 37 with a small heat capacity is heated,
Since it only needs to be cooled, it can be heated and cooled with less energy.
Can shorten the molding cycle.
You can. [Eleventh Embodiment] Next, an eleventh embodiment will be described.
The embodiment will be described in detail with reference to FIG.
To do. In the following description, the first embodiment and
The same parts are denoted by the same reference numerals for detailed explanation.
Omitted. In the drawings to be referred to, FIG.
It is sectional drawing which shows embodiment of the resin molding die which concerns. As shown in FIG. 17, the resin mold of the present invention
19 is mounted on a stationary platen (not shown)
Mounting plate 21 and installed on this mounting plate 21 via a receiving plate 22
The mold main body 2B is configured. Also, this template
The body 2B is, for example, glass, ceramic, stainless steel, etc.
The cavity mold surface 107
On the surface of the nesting member 38 inserted into the mold body 2B.
Is formed. Further, the nesting member 38 is, for example,
If the thermal conductivity of beryllium copper (BeCu) is 2
It is formed by a nesting member 38 made of a material higher than B.
ing. Then, the cavity mold surface 10 of the mold body 2B.
7 is formed in the hollow member 109.
In the hollow portion 109, the resin product A is formed.
Mold surface temperature for heating and cooling the cavity mold surface 107 immediately after molding
Heating / cooling mechanism 110 that functions as a degree control means is installed
Has been. In this case, the heating / cooling mechanism 110
The heat / cooling part is located on the cavity mold surface 107 of the mold body 2B.
The facing surface 38a in the hollow portion 109 of the corresponding nesting member 38
It is said. The heating / cooling mechanism 110 includes a nesting member.
Injecting toward the facing surface 38a in the hollow portion 109 of 38
The nozzle 111 communicates with the lower part of the injection nozzle 111.
Medium introducing passage 112 for supplying medium G, and nesting portion
An injection nozzle communicating with the lower part of the hollow portion 109 of the material 38
The heated and cooled medium G1 ejected from 111 is directed to the outside.
And a medium outlet passage 113 for discharging. Also,
These medium introduction passage 112 and medium discharge passage 113 are:
It is formed in a receiving plate 22 that supports the mold body 2B. Further, it is ejected from the ejection nozzle 111.
Medium of heating / cooling mechanism 110, for example, cooling medium G
As a spray from compressed air or spray nozzle 111
Highly volatile liquid such as alcohol that evaporates
Body or a mixed gas thereof is preferably used.
The On the other hand, as the heating medium G, for example, a room temperature atmosphere
In the air, it has a negative Joule-Thomson coefficient
Therefore, from a high pressure region (for example, 50 atmospheres) to a low pressure region (for example,
For example, hydrogen gas whose temperature rises when jetted to 1 atm)
(H ₂ ) Or helium gas (He)
I can. Further, the medium G1 after heating / cooling is directed outward.
In the outlet 113a of the medium outlet passage 113 to be discharged,
A silencer 114 is provided to mute the discharged sound.
Yes. Enter the cavity mold surface 107 of the mold body 2B.
A seal material 115 is interposed between the lever member 38 and the receiving plate 22.
The hollow part 1 which is interposed and formed inside the nesting member 38
The sealing property of 09 is improved. Further, the cavity mold surface 10 of the mold body 2B.
A resin reservoir 116 is provided around 7. this
The resin reservoir 116 is a mold formed by a top-and-bottom combination mold.
When enhancing the filling effect of the molten resin into the tee mold surface 107
Furthermore, push up when taking out resin product A after injection molding
Used as a push-up part to hit a pin (not shown)
The In such a resin mold 19, for example,
When the resin product A is cooled immediately after injection molding, the cooling medium G is a medium.
Injected through the introduction port 112a of the body introduction passage 112
It is supplied to the nozzle 111. This cooling medium G
The cavity mold surface 10 from the nozzle portion 111a of the nozzle 111
Forced toward the facing side 38a of the nesting member 38 corresponding to 7
Erupted. At this time, compressed air is used as the cooling medium G.
If the compressed air is present, the nozzle portion of the injection nozzle 111
The volume suddenly expands when ejected from 111a,
The so-called adiabatic expansion lowers the ejection temperature. Also,
When a highly volatile liquid is used as the cooling medium G,
A highly volatile liquid is discharged from the nozzle portion 111 of the injection nozzle 111.
Evaporation latent heat is generated by vaporizing when sprayed from a
And the ejection temperature decreases. And this declined
The facing surface 38a of the nesting member 38 is moved at the ejection temperature of the coolant G.
By cooling, the key of the mold body 2B is caused by the heat conduction.
The cavity mold surface 107 is cooled efficiently.
The On the other hand, at the time of heating immediately before the injection molding of the resin product A
, Hydrogen gas (H ₂ )
Uses helium gas (He), and this heating medium G is a medium.
Injected through the introduction port 112a of the body introduction passage 112
It is supplied to the nozzle 111. This heating medium G
The cavity mold surface 10 from the nozzle portion 111a of the nozzle 111
Forced toward the facing side 38a of the nesting member 38 corresponding to 7
Erupted. At this time, the hydrogen gas as the heating medium G is also
Helium gas is a negative gas in a normal temperature atmosphere.
Due to having a Thule-Thomson coefficient,
From 50 atmospheres) to low pressure area (for example, 1 atmosphere)
Then, the temperature rises. Thereby, the nesting member 38
The facing surface 38a is heated, and the heat conduction of the mold body 2B
The cavity mold surface 107 is heated. In the hollow portion 109 of the nesting member 38
The heated and cooled medium G1 passes through the medium outlet passage 113.
Is led out to the outlet 113a side, and this outlet 113a
Discharged to the outside through the silencer 114 connected to
It is. As a result, the mold body 2B itself can be heated and cooled.
The nesting member 38 is forcedly heated and cooled locally.
Only the heating and cooling of the cavity mold surface 107 are performed,
The facing part of the hollow part corresponding to the cavity mold surface of the mold body
The cooling efficiency can be increased. The medium is gaseous
The medium after heating and cooling is removed as it is.
Can be released into the air,
The need for recovery equipment and waste disposal measures can be avoided.
The In addition, the entire facility can be simplified. [Twelfth Embodiment] FIG. 18 shows the present invention.
The 12th Embodiment concerning is shown. This twelfth embodiment
Then, the resin mold 1 in the eleventh embodiment described above
9 corresponds to the cavity mold surface 107 of the mold body 2B
As a heat absorber on the opposite side 38a side of the nesting member 38
The fin 117 is provided. This
A container corresponding to the cavity mold surface 107 in contact with the medium G
The surface area of the facing surface 38a of the child member 38 is increased, and heat with the medium is increased.
In order to increase the exchange, the heating and cooling
Promote heating or heat dissipation effect of facing surface 38a of lever member 38
It is supposed to let you. [Thirteenth Embodiment] FIG. 19 shows the present invention.
The 13th Embodiment concerning is shown. This thirteenth embodiment
Then, the resin mold 1 in the eleventh embodiment described above
9, the injection nozzle 111 is replaced with a plurality of nozzle portions 111.
a, 111b, 111c branched
The And these each nozzle part 111a, 111b,
From 111c, the difference according to the thickness dimension distribution of the resin product A
The medium G is ejected at a flow rate of
As a result, the cavity mold surface 107 of the mold body 2B is made of resin.
Uniform heating and cooling without unevenness according to the thickness distribution of product A
It is supposed to be rejected. In each of the embodiments described above, the tree
Insert cavity mold surface 107 of mold body 2B of fat mold 19
Although it is formed by the lever member 38, it is integrally formed with the mold body 2B.
A bitter mold surface 107 may be formed. In addition, the present invention departs from the gist of the present invention.
Needless to say, various modifications can be made without departing.
For example, the mold of the present invention is not a resin mold, an aluminum mold.
It is also applicable to die for die casting of um alloy. As described in detail above, according to the present invention, the tree
The part that transfers the shape of the fat product is made up of a nested member.
Therefore, it is possible to heat and cool only the nesting member alone.
Can control the temperature of the mold with good responsiveness.
High energy efficiency and short molding cycle
A mold can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional perspective view of a resin mold according to a first embodiment of the present invention. 2 is a cross-sectional view taken along line XX of FIG. FIG. 3 is a schematic diagram of a heating / cooling mechanism. FIG. 4 is a flowchart showing an injection molding cycle when resin is injection-molded using the resin mold according to the first embodiment. FIG. 5 is a graph showing a temperature cycle of each part and an operation cycle of a heating block and a cooling block when resin is injection-molded using the resin mold according to the first embodiment. FIG. 6 is a diagram showing a heat flow in a resin mold,
(A) is a state in which the heat of the molten resin is accumulated in the heating block;
(B) shows a state in which the resin is cooled by the cooling block, and (c) shows a state in which the nested member is preheated by the heat accumulated in the heating block. 7 is a cross sectional view of the resin mold according to the second embodiment shown in FIG.
It is a figure corresponded to a -X-ray cross section. 8 is a cross-sectional view of the resin mold according to the third embodiment shown in FIG.
It is a figure corresponded to a -X-ray cross section. 9 is a cross sectional view of the resin mold according to the fourth embodiment shown in FIG.
It is a figure corresponded to a -X-ray cross section. FIG. 10A is a cross-sectional view of a principal part of a nesting member and a template of a resin molding die according to a fifth embodiment, and FIG.
It is principal part sectional drawing of the nesting member and mold plate of the resin mold which concerns on 6th Embodiment. FIG. 11A is a cross-sectional view of a principal part of a nesting member and a template of a resin mold according to a seventh embodiment, and FIG.
It is principal part sectional drawing of the nesting member and mold plate of the resin mold which concerns on 8th Embodiment. 12 is a view corresponding to a cross section taken along line XX of FIG. 1 of a resin mold according to a ninth embodiment. FIG. 13 is a longitudinal sectional view of a resin mold according to a tenth embodiment. FIG. 14 is a schematic diagram of a heating / cooling mechanism. 15 is a flowchart illustrating an injection molding cycle when a resin is injection-molded using the resin mold shown in FIG. FIG. 16 is a diagram showing the heat flow in the resin mold,
(A) shows the state which pre-heats a nested member with the heat | fever of a high temperature heat medium, (b) shows the state by which the heat | fever of resin was transmitted to the high temperature heat medium. FIG. 17 is a schematic sectional view showing an eleventh embodiment of a resin mold according to the present invention. FIG. 18 is a schematic cross-sectional view showing a twelfth embodiment of a resin mold according to the present invention. FIG. 19 is a schematic sectional view showing a thirteenth embodiment of a resin mold according to the present invention. [Explanation of Symbols] 1 Resin mold 2, 2A, 2B Mold body 4 Heat exchange chamber 4a Upper ends 6a, 6b Heat exchange passages 7a, 7b Switching valve 8 Heater (heating means) 9 Cooling medium flow path (cooling means) 11a, 11b Heat exchange passage 21 Mounting plate 22 Receiving plate 23, 25 Mold plate (main mold) 24 Seal member 30 Nesting member 30a Upper end surface 30b Lower end surface 30c Upper end portion 38a Confronting 41 Heating block 42 Cooling block 43 High temperature heat medium supply device 44 Low temperature Heat medium supply device 48 Temperature control device 107 Cavity mold surface 109 Hollow portion 110 Mold surface temperature control means (heating / cooling mechanism) 111 Injection nozzle 111a Nozzle portion 111b Nozzle portion 111c Nozzle portion 112 Medium introduction passage 112a Introduction port 113 Medium extraction passage 113a Outlet 114 Silencer 115 Sealing material 116 Resin reservoir 117 Heat radiation 212 Switching valve 213 Temperature sensor D Gap C Cavity S Heating / cooling mechanism R Molten resin L High temperature heat medium A Resin product G Medium (for supply) G1 Medium (for discharge)

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Claims (1)

What is claimed is: 1. A mold comprising a main mold and a nesting member incorporated in the main mold and transferring the shape of a resin product, and temperature control means for heating and cooling the nesting member independently A mold characterized by comprising