KR20150066725A - A Metallic Mold Unit Maintaining Temperature Constantally - Google Patents

A Metallic Mold Unit Maintaining Temperature Constantally Download PDF

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Publication number
KR20150066725A
KR20150066725A KR1020130152108A KR20130152108A KR20150066725A KR 20150066725 A KR20150066725 A KR 20150066725A KR 1020130152108 A KR1020130152108 A KR 1020130152108A KR 20130152108 A KR20130152108 A KR 20130152108A KR 20150066725 A KR20150066725 A KR 20150066725A
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KR
South Korea
Prior art keywords
water
panel
output
input
hole
Prior art date
Application number
KR1020130152108A
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Korean (ko)
Inventor
김한규
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(주)신명정보통신
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Priority to KR1020130152108A priority Critical patent/KR20150066725A/en
Publication of KR20150066725A publication Critical patent/KR20150066725A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The present invention relates to a metallic mold device for consistently maintaining temperatures, comprising an upper metallic mold (10) which has an upper cavity into which resins (1) are injected; a lower metallic mold (20) which is installed to be matched with the upper metallic mold and has a lower cavity into which resins are injected; a heating device (30) which is installed on the lower part of the lower metallic mold, has a heater coil, receives electricity from the outside, generates heat and supplies the heat to the lower metallic mold; and a heating supplement device (40) which is installed between the heating device and the lower metallic mold, circulates water while absorbing heat generated from the heating device, transfers the heat to the lower metallic mold and accordingly uniformly transfers heat to the resin to be molded.

Description

Technical Field [0001] The present invention relates to a mold apparatus for maintaining a constant temperature,

The present invention relates to a mold apparatus which maintains a constant temperature. In particular, a heating apparatus and a heating auxiliary apparatus are provided in a mold apparatus, and a heating assist apparatus is easily dispersed evenly using heat generated in the heating apparatus. The present invention relates to a mold apparatus that maintains a constant temperature.

Generally, an injection mold has a structure in which upper and lower plates incorporating a core are mutually combined to form the same cavity as a product to be molded, and a molten resin solidified (particles, pellets) is injected into the cavity at a high pressure Mold the product. These injection molds require various molding conditions for molding, in which the temperature of the resin must be set, and then the resin is injected into the cavity of the mold so that the resin is injected at the proper injection pressure and speed.

The thermosetting plastic resin used in the molding process is first melted in a molding machine, and when a predetermined pressure is applied, the resin is moved to a desired position through a runner at a supply part and molded into a mold shape.

Therefore, the mold has to maintain a constant temperature, and the balance of heat in the mold has a great influence on the quality of the molded product.

The temperature of most molds is maintained by electric heating using a heater cartridge. Depending on the size of the mold, four, six, eight, etc. are mounted on the master die The temperature is set by attaching a temperature sensor to a certain part of the master die, reading the transferred temperature from the controller, then sending a certain amount of electricity to the heater cartridge when the temperature goes down to the set lower limit, .

1, 2, and 3, a top chase 20 is mounted on a top master die 10, a bottom master 20 is mounted on a bottom master die 15, a bottom chase 25 is mounted on a molding die of the upper chase 20 and the lower chase 25 on the molding surface of the upper chase 20 and the lower chase 25.

Each of the master dies 10 and 15 has cylindrical heater cartridges 30 and temperature sensors 40 to transmit heat to the chases 20 and 25.

That is, in the semiconductor molding apparatus, the cylindrical heater cartridge 30 is mainly used. Due to the structure of the master dies 10 and 15, the heater cartridges 30 can not be provided over the entire area.

Thus, in the master dies 10 and 15, there is a temperature sensor 40 so that the temperature can be adjusted. When the temperature sensed by the temperature sensor 40 enters a regulator (not shown) and the temperature is lower than the set lower limit The switch 50 is connected to the coil 60 of the heater cartridge 30 and the current is supplied to the coil 60 so as to rise by the set temperature.

When the master dies 10 and 15 are heated higher than the set upper limit temperature, the temperature sensed by the temperature sensor 40 again enters the regulator and the switch 60 is short-circuited to warm the temperature, It is composed of a structure to control.

That is, the thermosetting rod material is melted by the heat applied to the mold, and then reacted and hardened. To this end, the temperature of the mold should be kept constant.

However, the heat generated in the heater cartridge 30 is not uniformly heated on the entirety of the master dies 10 and 15, and the heat generated by the chase 20, 25 on the surfaces of the master dies 10, 20, 25) The surface temperature is unbalanced.

Therefore, the temperature condition of each cavity and each of the chases 20 and 25 becomes different, which causes defects such as incomplete forming, wire sweeping and voids.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a device capable of uniformly heating a mold without a dead zone, and using the same to maintain a constant temperature applied to a molded product, And it is an object of the present invention to eliminate defects occurring in the molding apparatus by reducing the generated temperature deviation.

As means for achieving the above object,

An upper mold (10) is formed by forming an upper cavity into which a resin (1) is injected; A lower mold 20 meshing with the upper mold and forming a lower cavity into which the resin is injected; A heating device (30) located at a lower portion of the lower mold and equipped with a heater coil and generating heat by being supplied with electricity from the outside to provide heat to the lower mold; And a heating auxiliary device (40) located between the heating device and the lower mold, circulating water, absorbing heat generated by the heating device, and transferring the generated heat to the lower mold evenly so as to achieve uniform heat transfer to the molding resin; The heating assisting device (40) comprises: a housing (41) having a space portion in which water circulates; A water inlet pipe (42) installed through one side of the lower portion of the housing and supplying water supplied from the outside to the inside of the housing; A water output pipe (43) installed on the other side of the upper portion of the housing and outputting water circulated inside the housing to the outside; A water input unit 44 for temporarily storing the water inputted through the water input pipe; A water output unit 45 for temporarily storing water before the water is output through the water output pipe; A plurality of input holes formed between the water inlet and the central space to form a plurality of input holes for receiving water through the input holes to move toward the central space, An input panel 46; A water output panel 47 installed between the water output unit and the central space unit to form a plurality of output holes for transferring the water present in the central space unit to the water output unit, And the like.

The input hole 46a and the output hole 47a are formed in a hopper shape so that water can be smoothly moved from the water inlet portion to the central space portion and also smoothly moved from the central space portion 48 to the water output portion .

Further, an opening / closing device (50) connected to one side of the heating auxiliary device and determining the circulation speed of water generated in the heating auxiliary device is further provided.

A water inlet side water circulation controlling panel 51 slidingly connected to the water input panel 46 of the heating auxiliary device 40 and having a plurality of through holes 51a formed therein; The water circulation adjustment panel for water inlet side is connected to the water inlet side water circulation adjustment panel 51 so as to make the water circulation adjustment panel move back and forth so as to overlap the input hole 46a of the water input panel 46, A water inlet side regulating cylinder 53 for regulating an input speed of water toward the central space portion; A water inlet side water circulation controlling panel (52) slidingly coupled to the water output panel (47) of the heating assisting device (40) and having a plurality of through holes (52a) formed therein; The water output side water circulation adjusting panel is connected to the water output side water circulation adjusting panel 52 so that the water output side water circulation adjusting panel overlaps or slides with the through hole 52a and the output hole 47a of the water output panel 47 And a water output side adjustment cylinder 54 for adjusting an output speed of water output to the outside.

When the temperature of the water in the cooling channel is increased more than necessary, the amount of cooling water is increased and the water inlet side adjustment cylinder 52 is arranged so that the through hole 51a and the input hole 46a of the water input panel 46 overlap, Controls the water output side adjustment cylinder 52 so that the through hole 52a and the output hole 47a of the water output panel 47 overlap with each other; When the water temperature is less than a predetermined value, the water inlet side adjustment cylinder 52 is controlled so that the through hole 51a and the input hole 46a of the water input panel 46 are shifted from each other, And a control unit 55 for controlling the water output side adjustment cylinder 54 so that the output hole 47a of the panel 47 is shifted.

As described above, the present invention provides a device capable of uniformly heating a mold without a dead zone, so that the temperature applied to the molded product can be kept constant by using the device, So that defects occurring in the molding apparatus can be eliminated.

FIGS. 1 to 3 are views showing a conventional mold apparatus.
4 is a cross-sectional view showing an overall configuration of the present invention.
5 is an exploded sectional view of the present invention.
6 is a perspective view of the heating assist device of the present invention.
7 is a configuration diagram of a heating apparatus according to the present invention.
8 is a state in which water is supplied to the heating assistant of the present invention.
9 is a view showing a state in which the opening / closing device of the present invention is installed.
Fig. 10 is a diagram showing the circulation of water in the heating auxiliary device in the present invention. Fig.
11 is a view showing that the water circulation of the heating auxiliary device is cut off in the present invention.
12 is a diagram showing circulation of only half of the water in the heating assist device in the present invention.

The operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings and description. It should be understood, however, that the drawings and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention, and are not to be construed as limiting the present invention.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terms used below are defined in consideration of the functions of the present invention, which may vary depending on the user, intention or custom of the operator. Therefore, the definition should be based on the contents throughout the present invention.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. The configuration is omitted as much as possible, and a functional configuration that should be additionally provided for the present invention is mainly described.

Those skilled in the art will readily understand the functions of the components that have been used in the prior art among the functional configurations that are not shown in the following description, The relationship between the elements and the components added for the present invention will also be clearly understood.

In order to efficiently explain the essential technical features of the present invention, the following embodiments properly modify the terms so that those skilled in the art can clearly understand the present invention, It is by no means limited.

As a result, the technical idea of the present invention is determined by the claims, and the following embodiments are merely illustrative of the technical idea of the present invention in order to efficiently explain the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs. .

4 is a cross-sectional view showing an overall configuration of the present invention.

5 is an exploded sectional view of the present invention.

6 is a perspective view of the heating assist device of the present invention.

7 is a configuration diagram of a heating apparatus according to the present invention.

8 is a state in which water is supplied to the heating assistant of the present invention.

9 is a view showing a state in which the opening / closing device of the present invention is installed.

Fig. 10 is a diagram showing the circulation of water in the heating auxiliary device in the present invention. Fig.

11 is a view showing that the water circulation of the heating auxiliary device is cut off in the present invention.

12 is a view showing circulation of only half of water in the heating assisting device in the present invention,

The constituent elements of the present invention mainly consist of an upper mold 10, a lower mold 20, a heating device 30, a heating assisting device 40, and an opening / closing device 50.

The upper mold 10 is located at an upper portion of the entire apparatus, and is formed by forming an upper cavity into which the resin 1 is injected.

The lower mold 20 is disposed at a lower portion of the overall apparatus, and is engaged with the upper mold to form a lower cavity into which the resin is injected.

The heating device 30 is located at a lower portion of the lower mold and is provided with a heater coil 31. Heat is generated by supplying electricity from the outside to provide heat to the lower mold.

The heating assist device 40 is disposed between the heating device and the lower mold, circulates the water, absorbs the heat generated by the heating device, and transfers the heat to the lower mold uniformly, thereby achieving uniform heat transfer to the molding resin.

The opening / closing device 50 is connected to one side of the heating assisting device and determines the circulation speed of the water generated in the heating assisting device.

Hereinafter, the heating assisting device 40 and the opening / closing device 50 will be described in more detail as follows.

The heating auxiliary device includes a housing 41, a water input pipe 42, a water output pipe 43, a water input unit 44, a water output unit 45, a water input panel 46, A water output panel 47, and a central space portion 48.

The housing 41 is formed in a rectangular parallelepiped shape and has a space portion in which water circulates.

The water input pipe 42 is provided through one side of the lower part of the housing and supplies water supplied from the outside to the inside of the housing.

The water output pipe 43 is installed through the other side of the upper part of the housing and outputs water circulated inside the housing to the outside.

The water input unit 44 is a space unit for temporarily storing the water inputted through the water input pipe.

The water output unit 45 is a space unit for temporarily storing water before the water is output through the water output pipe.

The water input panel 46 is installed in the inside of the housing, and is installed between the water inlet and the central space to form a plurality of input holes. Water is input through the input holes and moves toward the central space So that the water is outputted while being depressed.

The water output panel 47 is a partition formed inside the housing so as to be installed between the water outlet and the central space to form a plurality of output holes so that the water present in the central space is transferred to the water outlet. .

The input hole 46a and the output hole 47a may be formed in the form of a hopper so that the water can be smoothly moved from the water inlet to the central space and guided to move smoothly from the central space 48 to the water outlet.

The opening / closing device 50 includes a water inlet side water circulation adjusting panel 51, a water output side water circulation adjusting panel 52, a water input side adjusting cylinder 53, a water output side adjusting cylinder 54, and a controller 55 ).

The water inlet side water circulation regulating panel 51 is slidably coupled to the water input panel 46 of the heating assisting apparatus 40 and has a plurality of through holes 51a formed therein and the water input side regulating cylinder 53 ) Of the water inlet panel 46 to be overlapped with or shifted from the input hole of the water input panel 46 to regulate the input speed of water toward the central space portion.

The water output side water circulation regulating panel 52 is slidably coupled to the water output panel 47 of the heating assisting device 40 and has a plurality of through holes 52a formed therein, 54 so as to be overlapped or shifted with the output hole 47a of the water output panel 46 to adjust the output speed of the water exiting from the central space portion to the outside.

The control unit 55 controls the water inlet side adjusting cylinder so that the inlet amount of the cooling water is increased when the temperature of the water in the cooling channel rises more than necessary and the inlet hole of the water inlet panel overlaps the through hole, Controlling the water output side adjustment cylinder so that the through holes and the output holes of the water input panel overlap; When the temperature of the water is below a certain level, the water inlet side adjustment cylinder is controlled so that the input holes of the through hole and the water input panel are shifted, and the water output side adjustment cylinder is controlled so that the output holes of the water inlet panel and the through hole are shifted .

Hereinafter, the assembly method of the present invention will be described.

The heating assisting device 40 comprises a housing 41 and a water supply device 40. The heating device 30 includes a housing 41, A water output panel 45, a water input panel 46, a water output panel 47, The upper mold 10 and the lower mold 20 are the same technical concepts as those of a general mold apparatus, so that the further description will be omitted. The heating device 30 is located at the lower end of the lower mold 20 and the heating assist device 40 is installed between the lower mold and the heating device.

The heating device 30 is provided with a heater line 31, and is supplied with electric energy to convert heat energy into heat to supply heat to the lower mold.

The heating assisting device 40 serves to uniformly distribute the heat supplied from the heating device, so that heat can be uniformly transferred to the entire lower mold to produce a high quality molded product.

The heating assist device 40 includes a housing 41 and receives water through one side thereof and outputs water through the other side of the housing 41. While the water flows through the central space portion 48 of the housing 41, 30, and the heat is evenly transferred to the central space while flowing through the central space. Here, the heat transferred from the water is transferred to the lower mold.

The heating auxiliary device 40 has a space 48 at the center and constitutes a water input part 44 and a water output part 45 on both sides and the water input part 44 is provided with a water input panel 46 And a water output panel 47 is provided on the water output section 45. [

The water input section 44 is provided with a water input pipe 42 and the water output section 45 is provided with a water output pipe 43.

The opening and closing device 50 is installed on the heating auxiliary device and is provided with a water input side panel 51 for water circulation adjustment on the water input panel 46 and is also provided with a water output panel 47 for controlling water circulation on the water output side The panels 52 are laid over each other.

The input hole of the water input panel and the through hole of the water circulation adjustment panel on the water input side are overlapped or shifted to adjust the input speed of the water, and the output hole of the water output panel and the through hole of the water output side water circulation adjustment panel overlap The output speed of the water is adjusted while shifted.

Hereinafter, the operation and effect of the present invention will be described.

The most important feature of the present invention is that a heating auxiliary device 40 is provided with a housing 41 and a partition is formed by a water input panel 46 and a water output panel 47. A water inlet hole 46a is formed in the partition, And the water output hole 47a are formed, respectively.

That is, in the present invention, water, which serves to uniformly transmit heat, is supplied vertically through the water inlet 44, and then the water flows through the central space 48 and finally flows through the water outlet 45, And is directed back to the pump.

Since the water flows along the water inlet hole 46a of the water input panel 46 after the water enters through the water inlet 44 as described above, 20 are heated evenly.

If only the water input pipe 42 and the water output pipe 43 exist without the water input panel 46 or the water output panel 47, various temperatures of water exist in the central space, It can not be heated.

However, the present invention distinguishes the input section and the output section of water through the water input panel 46 and the water output panel 47. Once the water is inputted through the water input section 44, the water input panel 46 The water enters the central space portion 48 through the water inlet hole 46a of the central space portion 48 so that it can be heated and flow evenly by the heating device located at the lower end of the central space portion 48. [

And, because of the warm water, the bottom of the mold is heated evenly, and high-quality molded products can be produced.

In addition, the present invention can further include an opening / closing device 50 that can open the water input pipe 42 and the water output pipe 43 differently. When the opening / closing device 50 is attached as described above, The input and output of the water can be controlled to specify the heating temperature of the water.

That is, if the temperature of the water is increased more than necessary, the amount of the cooling water is increased, and if the temperature of the water is constant, the water is circulated at a slower rate so that the water is sufficiently heated.

If the temperature of the water is below a certain level, the circulation of water is stopped to induce the water to be heated evenly.

That is, the input speed of the water is adjusted while the input hole 46a of the water input panel 46 and the through hole 51a of the water input side water circulation adjustment panel 51 are overlapped or shifted, And the through hole 52a of the water output side water circulation adjusting panel 52 are overlapped or shifted to adjust the water output speed.

Cylinders 53 and 54 are provided for upward and downward flow of the water circulation regulating panel 51 on the water inlet side and upward and downward flows of the water circulation regulating panel 52 on the water outlet side, The input amount of water can be adjusted by determining the degree of overlap between the input hole 46a and the through hole 51a and the amount of water output can be adjusted by determining the degree of overlap between the output hole 47a and the through hole 52a do.

10: Upper mold
20: Lower mold
30: Heating device
40: Heating auxiliary device
41: Housing
42: Water input piping
43: Water output pipe
44: Water inlet
45: Water output section
46: Panel for water input
47: Water output panel
48:
50: Switchgear
51: Water circulation control panel for water inlet
52: Water circulation control panel for water output side
53: Cylinder for adjusting water inlet
54: Cylinder for adjusting water output
55:

Claims (5)

An upper mold 10 formed by forming an upper cavity into which the resin 1 is injected; A lower mold 20 meshing with the upper mold and forming a lower cavity into which the resin is injected; A heating device (30) located at a lower portion of the lower mold and equipped with a heater coil and generating heat by being supplied with electricity from the outside to provide heat to the lower mold; And a heating auxiliary device (40) located between the heating device and the lower mold, circulating water, absorbing heat generated by the heating device, and transferring the generated heat to the lower mold evenly so as to achieve uniform heat transfer to the molding resin;
The heating assist device (40)
A housing (41) having a space portion in which water circulates;
A water inlet pipe (42) installed through one side of the lower portion of the housing and supplying water supplied from the outside to the inside of the housing;
A water output pipe (43) installed on the other side of the upper portion of the housing and outputting water circulated inside the housing to the outside;
A water input unit 44 for temporarily storing the water inputted through the water input pipe;
A water output unit 45 for temporarily storing water before the water is output through the water output pipe;
A plurality of input holes formed between the water inlet and the central space to form a plurality of input holes for receiving water through the input holes to move toward the central space, An input panel 46;
A water output panel 47 installed between the water output unit and the central space unit to form a plurality of output holes for transferring the water present in the central space unit to the water output unit, The mold apparatus according to claim 1, The method according to claim 1,
The input hole (46a) and the output hole (47a)
Wherein the hopper is configured to allow the water to naturally move from the water inlet to the central space and to move smoothly from the central space to the water outlet. The method according to claim 1,
Further comprising an opening / closing device (50) connected to one side of the heating assisting device to determine a circulation speed of water generated in the heating assisting device. The method of claim 3,
A water inlet side water circulation controlling panel 51 slidingly connected to the water input panel 46 of the heating auxiliary device 40 and having a plurality of through holes 51a formed therein;
The water circulation adjustment panel for water inlet side is connected to the water inlet side water circulation adjustment panel 51 so as to make the water circulation adjustment panel move back and forth so as to overlap the input hole 46a of the water input panel 46, A water inlet side regulating cylinder 53 for regulating an input speed of water toward the central space portion;
A water inlet side water circulation controlling panel (52) slidingly coupled to the water output panel (47) of the heating assisting device (40) and having a plurality of through holes (52a) formed therein;
The water output side water circulation adjusting panel is connected to the water output side water circulation adjusting panel 52 so that the water output side water circulation adjusting panel overlaps or slides with the through hole 52a and the output hole 47a of the water output panel 47 And a water output side adjustment cylinder (54) for adjusting an output speed of water output to the outside. 5. The method of claim 4,
When the temperature of the water in the cooling channel is increased more than necessary, the amount of cooling water is increased and the water inlet side adjusting cylinder 52 is controlled so that the through hole 51a and the input hole 46a of the water input panel 46 overlap with each other Controls the water output side adjustment cylinder 52 so that the through hole 52a and the output hole 47a of the water output panel 47 overlap with each other;
When the water temperature is less than a predetermined value, the water inlet side adjustment cylinder 52 is controlled so that the through hole 51a and the input hole 46a of the water input panel 46 are shifted from each other, Further comprising a controller (55) for controlling the water output side adjusting cylinder (54) so that the output hole (47a) of the panel (47) is shifted.
KR1020130152108A 2013-12-09 2013-12-09 A Metallic Mold Unit Maintaining Temperature Constantally KR20150066725A (en)

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Application Number Priority Date Filing Date Title
KR1020130152108A KR20150066725A (en) 2013-12-09 2013-12-09 A Metallic Mold Unit Maintaining Temperature Constantally

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Application Number Priority Date Filing Date Title
KR1020130152108A KR20150066725A (en) 2013-12-09 2013-12-09 A Metallic Mold Unit Maintaining Temperature Constantally

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017030333A1 (en) * 2015-08-19 2017-02-23 (주)우리텍 Rapid thermal diffusion injection mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017030333A1 (en) * 2015-08-19 2017-02-23 (주)우리텍 Rapid thermal diffusion injection mold

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