WO2010123329A2

WO2010123329A2 - Injection system having adiabatic means

Info

Publication number: WO2010123329A2
Application number: PCT/KR2010/002601
Authority: WO
Inventors: 송형천
Original assignee: Song Hyeong-Cheon
Priority date: 2009-04-24
Filing date: 2010-04-26
Publication date: 2010-10-28
Also published as: WO2010123329A3

Abstract

The present invention relates to a system for injection molding, more particularly to an injection system capable of reducing the loss of resin and improving the molding quality, by providing adiabatic means to joint regions between a molten resin distribution means and an external mold and between a nozzle and a mold, respectively, such that the energy loss due to frequent reheating of the distribution means and the nozzles and the denaturation of the molten resin due to reheating can be avoided to improve the molding quality. The injection system according to the present invention comprises: a distribution means having an inlet and an outlet for distribution of a molten resin supplied from an injector, and a heat transfer means; a nozzle installed at the outlet of the distribution means; and a mold disposed in contact with the nozzle, the mold having a space defined therein, wherein a first adiabatic means is disposed at a contact face between the nozzle and the mold, and the first adiabatic means is a refractory material layer that is surrounded by a boundary protector formed on a metal surface.

Description

Injection system with insulation

The present invention relates to a system for injection molding,

In particular, the dispensing means for dispensing molten resin and nozzles in the injection system that can reduce the resin loss and improve the molding quality are provided with insulation means in contact with the outer mold and the mold, so that the energy loss due to frequent reheating of the dispensing means and the nozzle And it relates to an injection system that can improve the molding quality by preventing the modification of the melt due to reheating.

In general, an injection molding machine is a machine for injecting a synthetic resin in a chip or powder state into a molten state and injecting it into a mold of a certain shape and molding a product according to the mold shape.

The synthetic resin melted by the heating heater is injected into the dispensing means by the transfer screw of the injection molding machine and then injected into the mold through the plurality of outlets of the distributing means.

An injection molding apparatus has become a popular system for introducing a heat transfer member into a distributing means to maintain a molten state of a resin to reduce resin loss and to improve molding quality.

Nevertheless, there is a heat loss problem due to heat conduction due to the temperature difference between the heated portion and the cold portion maintaining the room temperature, and when the temperature is lower than the reference temperature, the heating member is turned on to be reheated. Energy regeneration is required due to frequent reheating, and the resin is unilaterally heated due to reheating and temperature drift, causing burning problems, and when the resin is burned, gas is filled in the mold space and the resin passage. Serious problems with quality.

This problem causes more problems because the temperature sensitivity is increased when the resin used is an engineering plastic rather than a general-purpose plastic.

As an attempt to solve this problem, Utility Model Registration No.0252327 (October 17, 2001) of Daeho Trading Co., Ltd. introduced a heat insulating material (consisting of titanium-based bushings) to the tip of the nozzle. In addition, there is a technology that introduces a heat insulating means (consisting of installing a metal material and a general metal material having a greater strength than the nozzle) on the outside of the nozzle,

High manufacturing cost is concerned, and above all, special metal materials are used in the injection molding of engineering resins, so the focus is on maintaining the nozzle life, and there is a difference. The problem of inhibition of constant temperature maintenance due to heat conduction still remains.

In addition, Nissei Jushi Kogyo's patent registration No. 0799809 (January 24, 2008) [Nozzle for injection molding of resin with high temperature dependence of viscosity] forms a nozzle tip in the shape of a cap made of metal having low thermal conductivity, Although a technique of interposing a heat insulating plate made of ceramics or the like is provided at the joint portion of the main body and the nozzle tip, it does not present a solution to the problem that a heat insulating plate made of a weak ceramic material is damaged during distribution and use.

In addition, Kim Kwan-pyo Patent Registration No. 0761529 (September 18, 2007) [Injection molding machine] has a gate bush made of a low thermal conductivity material to prevent heat transfer to the mold, and a gate bush to prevent the temperature rise of the mold. And a cooling tube having a structure in which a coolant can be distributed between the mold and the mold is introduced. The main technique is to prevent the heat generated from the nozzle from being transferred directly to the injection molding. There is a difference from the technique to solve the problem caused by the situation where the heat of the means and nozzles are lowered due to conduction.

Meanwhile, Korean Patent Publication No. 194-0013783 (July 16, 1994) discloses that a heat transfer member is mounted on a channel formed in a distribution means main body to maintain a molten state of resin supplied to a mold space through a distribution means. In the dispensing means of the injection molding machine in which the electric heating wire is embedded, the electric heating heater is embedded in the upper and lower surfaces of the distributing means, and the insertion groove is formed in the upper and lower surfaces of the distributing means to insert the electric heating heater. The press groove is formed by inserting a carver formed with a support groove into the inserted electric heating heater so that the support groove supports the electric heating heater, but the prior art has an insertion groove shape of a distribution means and electric heating inserted into the insertion groove. It is difficult to manufacture the cover exactly for Hita,

In addition, it is also difficult to insert the support groove of the manufactured cover in accordance with the electric heating heater inserted into the insertion groove of the distribution means, and even if it is inserted, some of the cover is too inserted into the insertion groove so that it may not be further inserted or partially inserted into the insertion groove. In addition, the electric heating heater or the cover may be damaged by the insertion method by forceful pressing, and the cover may be protruded from the upper and lower surfaces of the distributing means, and the cover is fixed to the dispensing means only by pressing. There is a problem that can be separated and separated by an external impact, in particular thermal expansion of the electric heater, and the cover shape should be changed when the shape of the insertion groove of the distribution means is changed.

Accordingly, the present invention provides a first and second thermal insulation to each of the dispensing means and the dispensing means in contact with the mold and the external mold, in order to prevent melt loss due to energy loss due to frequent reheating of the nozzle and the nozzle and unbalanced overheating due to reheating. It is an object to provide an injection system incorporating a means.

In addition, the present invention is the first and second heat insulating means is made of a refractory layer attached to the metal surface can be expected to improve the heat conduction blocking performance, in this case is provided with an outer protective portion surrounding the refractory layer to prevent breakage of the refractory layer An object of the present invention is to provide an injection system configured in a form.

Furthermore, the present invention is a modification in which the irregularities are formed on the metal surface to strengthen the adhesion of the refractory layer, and the inner one of the outer protective part surrounding the refractory layer is buried in the refractory layer with a relatively low height than the outer one. It is an object of the present invention to provide an injection system related to a modification, which is lower than the refractory layer and can block contact with a mold or an external mold, thereby obtaining an effect of protecting the refractory layer and reducing thermal conductivity.

In addition, the present invention is made of a flexible outer shell of the heat transfer member for maintaining the constant temperature of the distribution means is easy to insert into the channel of the distribution means body, in particular the channel cross-section of the heat transfer member injected into the channel is made of Deviation is prevented, and the outer surface of the heat transfer member has a rectangular shape to ensure ease of deformation due to pressure. Furthermore, after the heat transfer member is deformed according to the shape of the main body channel, the heat transfer member is put into the main body channel and pressurized. By providing a mounting method of the heat transfer member that prevents the heat transfer member from being separated from the channel even if expansion by heat occurs, and by performing the planarization operation to polish the exposed surface of the heat transfer member after the combination of the main body and the heat transfer member Expect to improve and solve the problem of heating up the outer part of the heating member An object of the present invention is to provide a method of mounting a heat transfer member having a higher rate.

Injection system according to the present invention to achieve the above object is

Distribution means having an inlet and an outlet for dispensing the molten resin supplied from the injection machine and having a heat transfer member; A nozzle provided at an outlet of the distribution means; And a mold in contact with the nozzle and having a space;

A first insulating means is provided on a contact surface of the nozzle and the mold, and the first insulating means is a refractory layer wrapped by an outer protective part formed on a metal surface.

In addition, in the injection system according to the present invention, the first insulation means is formed in the nozzle itself, and alternatively, the first insulation means is a refractory layer provided in an insulation ring arranged between the nozzle and the mold. The refractory layer is arranged on a contact surface with the nozzle or the mold, or both, and further includes an outer mold surrounding the dispensing means, and a second insulating means is provided on the contact surface of the outer mold and the distributing means. It is preferable.

In addition, the dispensing means in the injection system according to the present invention is formed with a channel having an opening, the main body having an inlet and outlet; And a heat transfer member coupled to the channel of the main body, the heat transfer member including a flexible outer shell that rises above the main body surface without applying an external force upon input into the channel.

Here, it is preferable that the channel of the distribution means main body has a cross-sectional light beam shape in cross section, and the outer shell of the heat transfer member has a rectangular cross section.

In addition, it is preferable that a heating wire is built in the outer shell, and a filler is filled between the outer shell and the heating wire.

On the other hand, the heat transfer member mounting method to the distribution means,

A heat transfer member having a channel having an opening formed therein, the body having an inlet and an outlet, coupled to a channel of the body, the flexible member including a flexible sheath that rises above the body surface upon introduction into the channel. In combining together,

After deforming the heat transfer member in accordance with the shape of the main body channel, the heat transfer member is introduced into the main body channel, characterized in that for coupling by pressing. Here, after the main body and the heat transfer member are coupled, it is preferable to perform a flattening operation by polishing the exposed surface of the heat transfer member.

The injection system according to the present invention introduces the first and second thermal insulation means into each of the nozzle contacting the mold and the distribution means contacting the outer mold, resulting in energy loss due to frequent reheating of the distribution means and the nozzle and due to unbalanced overheating due to reheating. Molten resin denaturation can be prevented.

In addition, the injection system according to the present invention consists of a refractory layer having the first and second heat insulating means attached to the metal surface can be expected to improve the heat conduction blocking performance, in this case the outer envelope surrounding the refractory layer to prevent breakage of the refractory layer In the form provided with a protective part to increase the durability, and furthermore, the modification of the irregularities formed on the metal surface to strengthen the adhesion of the refractory layer, and the inner one relative to the height of the outer protective portion surrounding the refractory layer relative to the outer It can be lowered so as to be buried in the refractory layer or lower than the refractory layer to block the contact with the mold or the external mold, thereby achieving the effect of protecting the refractory layer and lowering the thermal conductivity.

In addition, the injection system according to the present invention is made of a flexible outer shell of the heat transfer member for maintaining the constant temperature of the distribution means is easy to insert into the channel of the main body of the distribution means, in particular the channel cross-section is formed in the upper and lower light shape to the channel The separation of the input heat transfer member is prevented, and the outer surface of the heat transfer member is formed in a quadrangle to ensure ease of deformation due to pressure, and further, after the heat transfer member is deformed according to the shape of the main body channel, the heat transfer member is introduced into the main body channel. By providing a method of mounting the heat transfer member which prevents the heat transfer member from being separated from the channel even if expansion by heat occurs by pressurizing and bonding, and the flattening operation of polishing the exposed surface of the heat transfer member after the main body and the heat transfer member are combined. Expect to improve the appearance quality and heat up the outer projecting heating element shell I can solve the problem.

1 to 3 are schematic cross-sectional schematic views of an injection system according to the invention with thermal insulation means of different embodiments;

4 is a perspective view associated with the nozzle and the first insulating means shown in FIG.

5 is a partial cutaway perspective view and cross-sectional views, respectively, of the nozzle and panel member associated with the thermal insulation means in the injection system according to the invention.

6 and 7 are cross-sectional views of nozzles and panel members respectively associated with deformed thermal insulation means in the injection system according to the invention.

8 is an exploded perspective view showing an embodiment of the distribution means according to the present invention.

9 is an exploded perspective view showing another embodiment of the distributing means according to the present invention.

10 is a plan view of FIG.

FIG. 11 illustrates various implementations of “A” in FIG. 1.

12 is a view showing various types of heat transfer members.

FIG. 13 is a view showing a mounting method of FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In each of the drawings, the same reference numerals, in particular, the tens and ones digits, or the same digits, tens, ones, and alphabets refer to members having the same function, and unless otherwise specified, each reference in the drawings. The member referred to may be regarded as a member conforming to these criteria.

As can be seen in FIG. 1, which is a schematic cross-sectional view of an injection system according to the present invention, an injection system according to the present invention is a screw-type piston (not shown, patent publication 1994-0013783 which supplies a large molten synthetic resin). An injection machine cylinder (C) with a built-in, a dispensing means (D) for dispensing the molten resin supplied from the injection machine, a nozzle (N) provided at an outlet (13) of the dispensing means, and a space (M3). It has a mold (M) which has, and a heat insulation means.

The injection system with heat transfer member has a high initial facility cost, but the injection pressure can be reduced, and there is no loss of synthetic resin due to the resin passage part (also called 'runnerless system' in this respect), and the injection quality is high and the productivity is high. Dispensing means (D) for a large injection system is typically provided with a heat transfer member 20, is provided with an inlet 12 and outlet 13 for the melt resin communication, the mold (M) space (M3) In order to allow the synthetic resin to be filled more quickly, it is common that the outlet is plural.

In the case where there are a plurality of outlets, the nozzle N provided for each outlet 13 is not shown, but the heat transfer member is generally provided like the distribution means, and the nozzle is provided with a temperature sensor so that the measured temperature is lower than the lower limit reference value. In this case, the heating means of the distribution means and the nozzles are turned on to raise the temperature to the upper limit value so that there is no problem in the flowability and product quality of the synthetic resin.

The mold (M) in contact with the nozzle (N) is usually separated from the left and right with respect to the gravity direction when the seal is installed (in this case, the drawing of FIG. 1 is vertical from the injection cylinder (C) to the mold (M) based on the actual gravity direction). Are arranged side by side, or separated vertically (in the case of multiple or horizontal injection molding machines) (hence the term 'upper' or 'lower' in this specification is a reference to the drawings).

In FIG. 1, it is illustrated that the upper cavity M1 corresponds to the fixed side forming the space M3 and the lower core M2 corresponding to the movable side.

In the injection system according to the present invention, the core corresponds to a heat insulating means, among which the first heat insulating means is provided at the contact surface of the nozzle N and the mold M, and particularly, as shown in FIGS. 1 and 4. The first insulating means S1 includes a refractory layer Sc attached to the metal surface at a position biased to the end of the nozzle N, and more particularly, a refractory layer Sc filled in an annular groove (not shown) at the nozzle end. It is configured to include.

However, as shown in FIG. 2, the first heat insulating means S1 may be deformed to be fixedly arranged on the contact surface with the mold M, particularly the upper cavity M1, which is illustrated in FIGS. 5 to 7. As shown in FIG. 2, a separate panel may be introduced, such as a panel member S2a constituting the second heat insulating means S2, and may be modified to form a refractory layer on the panel. As can be seen in Figure 2, the refractory layer Sc formed in the groove of the insulating ring (R1), as shown in the upper [A], [B], [C] of Figure 2, the insulating ring (R1) The refractory layer Sc may be arranged at a contact surface with the nozzle (corresponding to [A]), the mold (corresponding to [B]), or both (corresponding to [C]).

As used herein, the term 'metal surface' refers to a corresponding surface of a low conductive member, particularly a metal body, to which a refractory layer is attached, which constitutes a heat insulating means, and in particular, a nozzle N, a panel member S2a, or an insulating ring that is metallic. (R1) means the corresponding surface of (R2).

Furthermore, in FIG. 3, a plate spring having a washer-like shape is formed in order to increase the adhesion between the lower insulation ring R1 and the upper cavity M1 of the mold M (finally, to improve the adhesion between the nozzle N and the mold). Rs1) is introduced to prevent resin leakage (for this, the insulating ring R1 has a spring Rs1 receiving groove formed therein),

As shown in the upper parts [A], [B], and [C] of FIG. 3, the insulation ring R1 also has the refractory layer Sc corresponding to the nozzle ([A]) or the mold ([B], respectively. ], Or both of them (corresponding to [C]).

As can be seen in Figure 4, the nozzle (N1) has a flat portion (N1) to prevent rotation after the nozzle assembly on the upper flange.

In addition, in Fig. 1, Fig. 2 and Fig. 4, a separate insulating ring R2 is introduced between the upper portion of the nozzle N and the outer mold Me, and the refractory layer is also a heat insulating means S1a in the upper insulating ring R2. (Sc) was introduced (see FIG. 4), and in order to reduce the contact area, contact area reduction grooves R2a were formed (see the in-circuit drawing inverted from the bottom of FIG. 4), and the upper insulation ring ( Plate spring Rs2 is also provided in R2), and the adhesive double of the nozzle N and the upper cavity M1 of the metal mold | die M is aimed at.

The introduction of the insulating ring (R1) (R2) and the leaf spring (Rs1) (Rs2) between the distribution means (D) and the nozzle (N), and between the nozzle (N) and the upper cavity (M1) of the mold (M). Despite the minute tolerances, the adhesion between the members (D) (N) (M1) is improved by the pressure of the spring to prevent the resin leakage problem that may occur in the resin inflow passage. The introduction of the spring may also be introduced to the panel member S2a constituting the second insulation means S2.

On the other hand, the injection system is generally further comprises an outer mold (Me) surrounding the distribution means (D) for support and protection, the lower structure of the outer mold in order to reduce the contact area with the nozzle (N) as possible Can take a variety of structures.

It is preferable that a second insulation means is provided at the contact surface of the outer mold Me and the distribution means D, more essentially, at the contact surface of the injection hole 12 of the injection cylinder cylinder C tip and the distribution means D. However, it is preferable that the second heat insulating means S2 also include a refractory layer Sc, and the refractory layer Sc is a metal surface, in particular, as can be seen in FIGS. It is preferable that the refractory layer is attached to the metal surface of the panel member (S2a) for realistic and easy introduction. In particular, the panel member is preferably shaped to have a hollow (not specified) so as to be in communication with the discharge hole of the injection cylinder (C) and the injection hole 12 of the distribution means (D) main body 10, of course, Dispensing means (D) is arranged at the position of the injection port 12 of the main body 10.

The expression 'panel member' is not to be construed as a meaning limited to 'shape' meaning the meaning, and it can be referred to as a material irrelevant, and the same applies to the 'insulation ring'.

However, the second heat insulating means has a part connected to the injection molding machine in the form of a nozzle, and can be deformed into a shape introduced into the nozzle. (A part called 'nozzle locator C1' is usually a cylinder C and a distribution means D. It is used to connect the injection hole 12 of the main body 10, the locator ring (C2) is arranged at the end of the injection cylinder (C) and the upper mold (Me), the nozzle locator and the outer mold forming a part of the injection molding machine A second insulating means will be located between the nozzle locator and the dispensing means, each component having a molten resin passageway in communication therewith).

The above-mentioned first or second heat insulating means (S1) (S2), or both of them, may be used in particular a zirconium-based ceramic having excellent heat insulating performance, the ceramic adhesion to the metal surface is known thermal spraying (溶射, thermal spraying) The method can be used.

Furthermore, the refractory layer Sc is preferably wrapped and protected by an outer protective part formed on the metal surface, which is to prevent the fragile ceramics from being damaged during distribution, mounting and use as mentioned above. It is for.

In more detail, as shown in FIGS. 4 and 6 (a), the lower end of the nozzle N has upper and lower outer protection parts Sr1 and Sr2 with respect to the refractory layer Sc forming the first heat insulating means S1. Or upper and lower outer protective parts and intermediate outer protective parts Sr3, and the refractory layer Sc located between the outer protective parts Sr1, Sr2, and Sr3 may be formed by a thermal spraying method. In this case, it is preferable to go through a polishing process for planarization.

Next, [a], [b], [d], [d] (d) and [d] of FIG. 5 are relations between a cross-sectional view and a partially cut perspective view of a panel member having the same shape, respectively. As shown in FIG. 5, the refractory layer is not formed), the panel member S2a constituting the second insulation means S2 also includes various outer protection parts Sr1, Sr2, and Sr3. And, as shown in [b] and [c], each upper portion (corresponding to the 'lower' based on the installation state of Figure 1, but will be divided into the upper and lower, based on Figure 5) the end of the outer protective portion Forming the tip portion may function to reduce as much as possible the contact area between the metallic panel member and the upper surface of the main body 10 of the distribution means (D).

In addition, as shown in [a], [b], [d], and [d] of FIG. 5, the refractory layer is also introduced to the side surface of the panel member S2a (the part contacting the upper surface of the main body 10 of the distribution means D). It can be in the form of forming an annular groove, and in this case, as shown in [D] and [D], it is preferable that each outer protective part has a form having a tip, and furthermore, as long as there is no problem in breaking the refractory layer. As shown in [C] and [D], the upper inner outer protective part Sr1 may be buried in the refractory layer Sc, thereby contributing to the improvement of thermal insulation performance.

Next, in connection with the improvement of thermal insulation in FIG. 6, [a] a modification of the form in which the intermediate outer protective part Sr3 of the nozzle N is buried in the refractory layer Sc is shown, and [b] is a panel member. A variation example of the form in which the middle outer protective part Sr3 of S2a is buried in the refractory layer Sc (also the upper inner outer protective part Sr1) is shown.

Subsequently, in FIG. 7, [A] shows a modification in which fine concavo-convex Sp is formed in the annular groove of the nozzle N so as to contribute to the improvement of the bonding force of the refractory layer Sc attached thereto. A modified example is shown in which an annular groove (particularly, an outer annular groove) of the panel member S2a may also form fine unevenness Sp to contribute to improving the bonding force of the refractory layer Sc attached thereto.

Such fine unevenness (Sp) can be obtained through a known target corrosion processing process using chemicals such as strong acids or strong bases.

7 shows a modified example in which the upper middle outer protection portion Sr3 in the left enlarged circle is lower than that in the middle enlarged circle, which is processed by corrosion, and in this case, improved thermal insulation can be expected.

The concept of the outer protective portion and the refractory layer bonding force reinforcing means can be equally applied to the heat insulation ring (R1) (R2).

Next, with reference to Figures 1 and 8 to look at the heat transfer member 20 of the distribution means (D) to form another core of the injection system according to the present invention.

In the injection system according to the present invention, the dispensing means having the heat transfer member is mainly composed of a main body and a heat transfer member.

Looking at each configuration, the main body 10 is formed with a channel 11 having an opening 111, and comprises an injection port 12 and the discharge port (13). Here, the inlet 12 and the outlet 13 is in communication with each other, it is preferable that the channel has a cross-beam shape in the cross-section.

In addition, the inlet port of the distribution means is usually one, two outlets, but in the present invention is shown as four outlets, this is one example, not limited to this in various ways in consideration of the size and shape of the molded product, etc. It can be changed.

8, the channel 11 of the main body 10 may be formed on the upper surface, or the channel 11 of the main body 10 may be formed on both the upper and lower surfaces as shown in FIG. 9, and the resin may be melted. It is preferable that the discharge port 13 is formed on the bottom surface of the dispensing means main body 10 for maintaining the state. More preferably, the upper and lower surfaces of the main body 10 may be formed.

However, the distribution means according to the present invention is not limited to the protection range by the position of the channel 11 formed in the main body 10, the resin in the molten state from the supply cylinder (C) to the mold (M, see Fig. 1) It does not exclude the arrangement of the heat transfer member 20 in any form that satisfies the function of the delivery-relay-distribution distribution means.

On the other hand, the shape of the channel 11 of the main body 10 may be formed in the form passing through the edge, as shown in Figure 8, in order to maximize the thermal efficiency of the heat transfer member 20, and to minimize the heat loss of Figure 9 And as shown in Figure 10, it is most preferably formed in a shape surrounding the outlet (13).

In addition, both continuous and discontinuous channels 11 are possible, but considering the ease of manufacture and ease of mounting of the heat transfer member 20, the shape of the continuous channel 11 is most preferable, and the upper and lower surfaces of the main body 10, that is, the injection hole Although the shape of the channel 11 formed in the upper surface of the (12) side and the lower surface of the discharge port 13 side, respectively is preferable, this invention is not restrict | limited by this preferable embodiment.

The heat transfer member 20 is coupled to the channel 11 of the main body 10, the flexibility that rises above the surface of the main body 10 without applying an external force when the channel 10 is applied, flexible) shell 21.

Here, the outer shell 21 preferably has a rectangular cross section, and a heating wire 22 is embedded in the outer shell 21, and a filler 23 is filled between the outer shell 21 and the heating wire 22. It is desirable to have.

The flexible shell 21 refers to a material having good thermal conductivity and excellent warpage deformation, and generally adopts copper or aluminum, but is a concept encompassing other applicable alloy or synthetic resin materials.

In addition, the heat transfer member 20 rises above the surface of the main body 10 in the state in which the external force is not applied when the channel 10 is inserted, after deforming the heat transfer member 20 to the shape of the channel 11. (11) When the upper portion of the heat transfer member 20 is inserted in whole or in part but does not apply a special external force (that is, after the pressurization process using a machine, such as a press after the heat transfer member 20) Means that the top of the stays protruding over the surface of the body 10 around the channel 11 (see Fig. 13A-> Fig. 13B).

Thereafter, the heat transfer member 20 is pressurized and the heat transfer member 20 is deformed to fit the channel 11 cross-sectional shape. A function of preventing thermal separation of the heat transfer member due to expansion and improving thermal conductivity through expansion of the contact area between the heat transfer member 20 and the wall around the channel 11 is achieved.

However, considering the ease of assembly, as shown in FIG. 11, the height of the heat transfer member 20 is higher than the height of the channel 11 of the main body 10 so that the heat transfer member 20 is more easily inserted into the channel 11. Is preferably higher, and may satisfy various conditions and have various channel shapes and heat transfer member shapes as shown in FIG. 11.

Furthermore, it is more preferable to essentially satisfy the condition that the unit volume of the heat transfer member 20 is larger than or equal to the unit volume of the channel 11.

On the other hand, in relation to the heat transfer member 20 or the shell 21, the shape of the cross-section is elliptical, circular, semi-circular, or triangular or more (for example, (a) trapezoid square of Figure 12, (b) hexagon of Figure 12) Etc.), and above all, in the present invention, it is preferable that the shape of the cross section is a quadrangle, wherein the quadrangular is a concept encompassing square, rectangular, and trapezoidal shapes (but easily added to the main body channel without any additional processing). It is desirable to have relative appearance and appearance size that can be achieved).

In addition, the channel 10 of the main body 10 is referred to as a cross-beam shape in which the cross section is inserted into the channel 11 so that the heat transfer member 20 deformed to fit the channel 11 shape is separated from the opening 111 side. It means any shape to be prevented, but for ease of processing, the cross-sectional shape of the channel is preferably a trapezoidal shape, where the trapezoidal shape has a length difference between two upper and lower sides and a long side. It refers to an arbitrary shape which forms a short side (it may not have symmetry unlike drawing).

And the introduction of the filler 23 is primarily intended to reduce the consumption of expensive materials (such as metal (copper, etc.) used for the outer shell), when the shell 21 is a conductor, the electricity of the heating wire 22 It is preferable that the thermal conductivity while blocking the transfer to the shell 21 is a good material, for example, a ceramic material may be used.

In the above-described configuration, the method of mounting the heat transfer member according to the present invention includes deforming the heat transfer member 20 to conform to the shape of the main body 10 channel 11, and then transfers the heat transfer member 20 to the main body. It is put in the channel 11 of 10), it is combined by pressing. Here, after coupling the body 10 and the heat transfer member 20, it is preferable to perform a flattening operation by polishing the exposed surface of the heat transfer member 20.

Looking at the mounting method in detail with reference to Figure 13, the heat transfer member 20 is deformed to fit the shape of the channel 11, and inserted into the opening 111 side of the channel 11, (FIG. 13A) (B)) When the outer shell 21 protruding from the channel 11 forming surface of the main body 10 is pressed using a machine such as a press, the heat transfer member 20 is more fully introduced into the channel 11. ((B)-> (C) or (D) of FIG. 13), since the heat transfer member 20, particularly the flexible shell 21, is deformed to match the channel 11 cross-sectional shape, the separation of the heat transfer member 20 is prevented. The deformed sheath 21 is preferably in the form in which the heat transfer member 20 fills the channel 11 of the body 10 tightly.

In some cases, a flattening process for polishing the outer shell 21 protruding out of the channel 11 may be further required. ((D) of FIG. 13) Here, the heat-transfer member 20 that is pressure-deformed is a main body ( 'Filling' the channel 11 of 10) does not mean filling completely without gaps (the difference may occur depending on the press pressure for the deformation of the heat transfer member and the hardness of the shell material, etc.) Deformation of the heat-transfer member shell so as to fit in is not appropriate in terms of cost-effectiveness in consideration of problems such as distributing means body or heat transfer member breakage). The outer shell 21 of the heat-transfer member 20 protruding in shape is not possible so that post-processing (e.g., flattening by polishing the heat-transfer member shell exposed surface) is unnecessary or minimized. In this sense, the meaning of 'the volume of the heat transfer member is greater than or equal to the volume of the channel' is also close to the concept of assuming a slight tolerance rather than a strict one.

Therefore, considering all of the above-mentioned conditions and conditions, the cross-sectional shape of the heat transfer member 20 is a quadrangle, and the channel 11 has a cross-sectional shape where the cross-sectional shape minimizes the difference in length between the long side and the short side. Most preferably, the trapezoid of the shape (the trapezoidal channel shape shown in Fig. 11A) is exaggerated to help understand the ratio of the long side to the short side.

However, the present invention is a heat transfer member of any shape having a volume higher than the channel height and larger than the possible volume of the channel 11 to fill the channel 11 while being easily introduced into the channel 11 and transformed into a device such as a press. 20 and the channel 11 of any shape that prevents the pressure deformation filled heat transfer member 20 from being separated.

Through the relative shape and dimensional characteristics of the channel 11 of the main body 10 and the outer shell 21 of the heat transfer member 20, filling gaps that are insufficient for flattening the joints of the main body 10 and the heat transfer member 20 are filled. Filling with materials (eg gypsum) becomes unnecessary. And the polishing process of the exposed heat transfer member 20, the outer shell 21 is for improving the appearance quality above all, part of the outer shell 21 of the heat transfer member 20 protruding thereon without contacting the main body 10. It is to improve the thermal efficiency by solving the problem of heating until (the heat loss occurs due to unnecessary heating part).

On the other hand, in manufacturing the distribution means main body 10 according to the present invention, the injection hole 12 and the discharge port 13 can be formed through the drilling operation on the upper and lower surfaces of the main body 10, respectively, the injection hole 12 and the discharge port ( The through hole 14 connecting 13 to communicate with each other divides the main body 10 into two powders, and forms a groove having a semicircular cross section in each powder, and each groove is connected to each other through the through holes 14. ), But it is difficult to ensure the sealing property of the two surfaces of the contact, in the present invention, as shown in Figs. 8 to 10 and 1 in the present invention the first outlet from one of the outer wall of the two facing diagonally (13) and then drilled to the formation position of the outlet 13 located diagonally, and also the two facing outer walls of the adjacent diagonally similarly, so that the two outlets 13 and the inlet 12 located diagonally communicate with each other.Forming a tonghol 14, a perforated inlet channel fitted to the closure member (15) to ensure the tightness of the [inlet-outlet-through holes.

Here, the injection hole 12 and the discharge hole 13 may be formed first, and then the through hole 14 may be formed thereafter. However, the through hole 14 may be formed first, and the injection hole may be formed after the ease of manufacture. 12 and the outlet 13 is preferably formed to be perforated to communicate with the through hole (14).

As shown in FIG. 1, when the dispensing means having the mounting method of the above configuration is applied to the mold M, the molten resin is supplied to the injection hole 12 of the main body 10 through the cylinder C. The molten state is maintained by the heat transfer member 20 while passing through the outlet 13, and is filled in the space M3 formed by the upper and lower molds M to form the mold.

In the above description, the conventionally known techniques related to the thermal spraying method, the planarization (polishing), the concrete structure according to the type of injection machine, etc. are omitted, but those skilled in the art can easily infer, infer, and reproduce them.

In addition, in the above description of the present invention, the injection system having a specific shape and structure has been described with reference to the accompanying drawings, but the present invention can be variously modified, changed and replaced by those skilled in the art. It should be interpreted as falling within the protection scope of the present invention.

Claims

Distribution means having an inlet and an outlet for dispensing the molten resin supplied from the injection machine and having a heat transfer member;

A nozzle provided at an outlet of the distribution means; And

A mold in contact with the nozzle and having a space;

Including but not limited to,

A first insulating means is provided on the contact surface of the nozzle and the mold,

The first heat insulating means is an injection system, characterized in that the refractory layer wrapped by the outer protective portion formed on the metal surface.
The method of claim 1,

The first insulating means is formed in the nozzle itself, characterized in that the injection system.
The method of claim 1,

The first insulation means is a refractory layer provided in the insulating ring arranged between the nozzle and the mold,

And the refractory layer is arranged in contact with the nozzle or the mold, or both.
The method of claim 1,

Further comprising an outer mold surrounding the manifold,

Injection system characterized in that the second insulating means is further provided on the contact surface of the outer mold and the manifold.
The method of claim 4, wherein

The second heat insulating means is injection system, characterized in that the refractory layer wrapped by the outer protective portion formed on the metal surface.
The method according to any one of claims 1 to 5,

The distributing means has a main body having an opening and a channel having a cross-sectional light-shaped cross section,

The channel of the main body is an injection system characterized in that the heat transfer member including a flexible (flexible) sheath that rises above the surface of the main body without applying an external force when the channel is applied.