KR200467581Y1 - Stopcock of the Mold coolant hole - Google Patents

Stopcock of the Mold coolant hole Download PDF

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Publication number
KR200467581Y1
KR200467581Y1 KR2020120009682U KR20120009682U KR200467581Y1 KR 200467581 Y1 KR200467581 Y1 KR 200467581Y1 KR 2020120009682 U KR2020120009682 U KR 2020120009682U KR 20120009682 U KR20120009682 U KR 20120009682U KR 200467581 Y1 KR200467581 Y1 KR 200467581Y1
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KR
South Korea
Prior art keywords
cooling water
mold
water hole
fastening bolt
base member
Prior art date
Application number
KR2020120009682U
Other languages
Korean (ko)
Inventor
장영현
장도아
장은성
Original Assignee
장영현
장은성
장도아
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 장영현, 장은성, 장도아 filed Critical 장영현
Priority to KR2020120009682U priority Critical patent/KR200467581Y1/en
Application granted granted Critical
Publication of KR200467581Y1 publication Critical patent/KR200467581Y1/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling

Abstract

The present invention relates to a cooling water hole sealing stopper used in a mold, and more specifically, a fastening bolt having a predetermined length of a male thread formed on one side of a head, a base member to which the fastening bolt is coupled, and between the fastening bolt and the base member. In the mold cooling water hole sealing stopper including a seat member and an expansion spring, a pressure ring, a rubber ring and a washer to be fitted, the base member is formed to protrude from the metal fastening portion formed with a female thread on the inside at a predetermined height at the center thereof. The lower end of the fastening part has a configuration in which a plastic head of a predetermined height having a diameter larger than that of the fastening part is formed.

Description

Stopcock of the Mold coolant hole

The present invention relates to a cooling water hole sealing stopper used for a mold, and more particularly, to a cooling water hole sealing stopper for sealing a processing part penetrated to the outside after molding into a cooling water formed through the inside of a mold for producing injection and extrusion products. It is about.

Generally, a cooling water passage is formed in a mold for injection molding and extrusion molding of various products to cool a plastic material injected at a high temperature inside the mold.

A plurality of such cooling water is processed around the mold is molded in the interior of the mold, such a cooling water is formed through the cooling water hole is processed by the drilling process on the outer surface of the mold using a predetermined drill, etc. from the outside of the mold. .

Therefore, the cooling water channels processed inside the mold are configured to communicate with each other, and the cooling water is supplied from one cooling water hole and passed through the inside of the mold, and then discharged into the other cooling water hole. Many of the coolant holes are sealed to block the discharge of the coolant except for the inlet and outlet for the coolant supply and discharge.

In the related art, in order to seal the cooling water hole processed in the mold, the screw was machined on the inner circumference of the cooling water hole, and then, the fastening bolts were used to seal unnecessary cooling water holes.

However, in recent years, the use as a means for sealing a cooling water hole by using the cooling water hole sealing stopper 15 as shown in FIG. 1 is gradually increasing.

As shown in FIG. 1, the conventional cooling water hole closure cap 15 has a screw-shaped fastening bolt 2 and a screw-shaped screw part fitted to an outer circumference of the fastening bolt 2. A base member 12 having a portion 13 and a head portion 14 having a diameter larger than that of the fastening portion 13, and a through portion through which the fastening bolt 2 can be inserted therein. A sheet member 4 having a tapered portion on an outer circumferential surface thereof, an extension spring 6 made of a metal material which is brought into contact with the outer tapered surface of the sheet member 4 and expandable by its tightening force when the fastening bolt 2 is fastened; The pressure ring 8 having a constant thickness fitted into the expansion spring 6 and the rubber ring 10 expandable according to the pressing force of the pressure ring 8 are integrally coupled to each other to be sealed by being inserted into the cooling water hole of the mold. Thereby closing the cooling water hole.

In the conventional cooling water hole sealing stopper 15 having such a structure and configuration, a plurality of ring-shaped components provided between the fastening bolt 2 and the base member 12 include a fastening bolt 2 having a base member 12. As the fastening force is expanded, the cross section width and the inner diameter thereof are expanded, so that the fastening force is closely adhered to the inner circumferential surface of the coolant hole, thereby maintaining the air tightness of the coolant hole.

However, the biggest disadvantage of such a conventional coolant hole closure stopper 15 is that the base member 12 and other pressure rings 8 and the sheet member 4 made of metal material, including the base member 12 in contact with the cooling water supplied into the mold. Easily corroded and oxidized and had the disadvantage of poor durability.

In addition, since the base member 12, the pressure ring 8, and the sheet member 4 constituting the conventional cooling water hole closure stopper 15 are processed through lathe processing, the product production time takes much time and mass production. This is difficult, which caused the unit price of the product to rise.

Therefore, it is difficult for existing mold makers to lower mold manufacturing costs due to high cost of parts, which makes it difficult to improve competitiveness compared to competitors of the same type.

The present invention is to provide a mold cooling water hole sealing stopper to form a major component of the cooling water hole sealing stopper, which is one of the components used in the above-described mold, to a high-strength plastic product to significantly improve the productivity and cost of the product. Its purpose is to.

In particular, the present invention provides a mold cooling water hole sealing stopper which can improve the durability of the mold by preventing the corrosion and oxidation of the cooling water hole stopper by changing the member in contact with the cooling water in the mold to a plastic material having high strength and high heat resistance. There is another purpose to provide.

In order to achieve the above object, the mold cooling water hole sealing stopper according to the present invention is a fastening bolt formed with a predetermined length male thread on one side, and a base member having a fastening portion formed on the inner circumference of the female screw is coupled to the fastening bolt, and In a mold cooling water hole sealing stopper including a seat member and an expansion spring, a pressure ring, a washer and a rubber ring installed between the fastening bolt and the base member, the base member protrudes to a predetermined height by being made of a brass formed in the center of the fastening portion It is formed, the fastening portion is made of a structure wrapped around the head of the plastic formed a seating surface having a predetermined width at the outer peripheral edge of the fastening portion to a diameter slightly larger than its outer diameter.

In particular, the seat member, the expansion spring and the pressure ring is made of a high-strength plastic, the base member is formed by molding the fastening portion and the head integrally by the insert injection method.

In addition, the plastic material forming the head member of the sheet member, the expansion spring, the pressure ring and the base member is made of polycarbonate excellent in impact strength and heat resistance.

The mold cooling water hole sealing stopper according to the present invention is composed of a polycarbonate of plastic material having high strength and high heat resistance of the head of the base member which is in direct contact with the cooling water passing through the mold. To improve the durability of the mold.

In addition, the sheet member and the pressure ring, which are installed between the fastening bolt and the base member by the pressing force of the fastening bolt, are made of synthetic resin, so that the product is excellent in formability and mass production is possible. By lowering the production cost of the coolant hole sealing stopper, the overall mold manufacturing cost is lowered and the mold maker's competitiveness can be enhanced.

1 is an exploded perspective view of a conventional mold cooling water hole closure plug configuration;
2 is a block diagram of a mold cooling water hole closure plug according to the present invention,
3 is an enlarged cross-sectional view of one side of the base member in the configuration of FIG.
4 is a coupling state diagram of the plug configuration of FIG.
Figure 5 (a), (b) is a cross-sectional view of the configuration of Figure 3 is coupled to the cooling water hole of the mold and the tightening bolt after the tightening state,
Figure 6 is a partially cut state according to another embodiment of the rubber ring applied to the present invention,
Figure 7 (a), (b) is a cross-sectional view of the state in which the closure cap to which the rubber ring of Figure 6 is applied to the cooling water hole of the mold and the tightening bolt after tightening.

Hereinafter, with reference to the drawings attached to the specification will be described in detail with respect to the mold cooling water hole closure cap according to the present invention.

 The biggest feature of the mold coolant hole sealing stopper according to the present invention is that the parts made of metal in the conventional mold cooling water hole sealing stopper are made of high-strength plastic to prevent corrosion and oxidation during contact with the cooling water, thereby improving durability as well as the mold. It is designed to be improved and has its features.

In particular, the present invention is made of a plurality of components of the conventional mold coolant hole hermetically sealed stopper made of metal to improve the competitiveness of the product through the reduction of the processing time and the material cost required due to the need for cutting through the lathe To provide a mold coolant hole closure stopper, the configuration of the mold coolant hole closure stopper of the present invention having this feature is shown in a separate state in FIG.

That is, Figure 2 is an exploded perspective view of each component for the overall configuration of the mold cooling water hole sealing stopper 20 according to the present invention, the mold cooling water hole sealing stopper 20 according to the present invention is fastening bolt as shown in the figure (22) and the seat member 24, the expansion spring 26, the pressing ring 28 of the annular structure is formed between the plurality of base member 40 to which the fastening bolt 22 is coupled to each of the fitting portion therein ), The first rubber ring 30, the washer 35, the second rubber ring 31 is inserted into the cooling water hole of the mold in a state in which the first rubber ring 30, the first rubber ring 31 is integrally combined and used.

In more detail, the fastening bolt 22 positioned at the top end in the drawing is coupled to face outward when mounted in the cooling water hole of the mold, and the base member 40 located at the bottom end in the drawing is the coolant of the mold. When mounted inside the hole is coupled to face the inside of the mold is in direct contact with the coolant.

Therefore, since the fastening bolt 22 is not directly in contact with the cooling water of the mold, there is no fear of oxidation and corrosion due to the contact of the cooling water, and is made of metal, and the outer surface of the head 23 of the fastening bolt 22 is formed. The tool insertion groove 23a is formed at the opposite side, and the male screw part having a predetermined length is formed at the opposite side where the tool insertion groove 23a is formed.

Then, the seat member 24 is fitted to the outer circumference of the male screw portion of the fastening bolt 22.

The sheet member 24 is formed to have a predetermined height, and the inside of the fitting hole 24a of a predetermined size through which the male screw portion can be inserted, and the fitting hole 24a penetrates to the outside. A tapered portion 25 is formed to be in close contact with the inclined inner surface of the fastening bolt 22 so that the head 23 of the fastening bolt 22 can be completely inserted into the sheet member 24.

In addition, the outer surface of the sheet member 24 also has an outer tapered portion 27 having an inclined surface of a predetermined inclination, the lower side of the sheet member 24 is fitted with a ring-shaped pressure ring 28 is fitted.

The pressure ring 28 serves to transfer the fastening force generated when the fastening bolt 22 is coupled to the base member 40 to the lower component, the outer taper portion 27 formed on the outer surface of the seat member 24 ), The inner tapered portion 29 is inclined at a constant slope on the inner circumferential surface thereof.

Accordingly, the fastening force of the fastening bolt 22 is transmitted to the sheet member 24, and the force transmitted to the sheet member 24 is transmitted to the pressure ring 28 coupled to the lower end thereof, and the inner tapered portion of the pressure ring is provided. The outer circumferential surface is in close contact with the 29 to push the pressure ring 28 to the bottom.

In addition, an annular first rubber ring 30 having an inner diameter equal to a diameter of a bottom center of the pressing ring 28 is positioned at a lower end of the pressing ring 28 to be in close contact with the bottom of the pressing ring 28 and pressurized. It is made of an elastic material such that its cross-sectional area is expanded outward while being compressed according to the pressing force of the ring 28.

In addition, the lower end of the first rubber ring 30 is fitted with a metal washer 35 of a predetermined thickness, the second rubber ring of the same size as the first rubber ring 30 to the lower end of the washer 35. 31 is positioned so that, like the first rubber ring 30, the fastening force of the fastening bolt is transmitted through the pressure ring 28, the first rubber ring 30, and the washer 35, and is compressed in the width direction thereof so that the cross-sectional area is It is made of a constant elastic material to expand.

The second rubber ring 31 is fitted to the outer periphery of the fastening portion 42 protruding to the upper surface of the base member 40 positioned at the lower end, and the fastening portion 42 at the lower end of the base member 40. A somewhat larger diameter of the locking jaw 44 is formed so that the mounting surface 45 is formed so that the second rubber ring 31 is seated on the upper surface of the locking jaw 44.

And, when the seat member 24 and the pressure ring 28 is made in an annular shape, the outer surface of the seat member 24 and the inner circumferential surface of the pressure ring 28 is in close contact with the fastening force of the fastening bolt 22, A cutting portion 26a is formed at one end of the annular structure so that the outer diameter thereof can be enlarged according to the pressing force of the sheet member 24, and an expansion spring 26 having an inner diameter thereof is expanded.

The sheet member 24 and the pressure ring 28 are injection-molded with a high-strength polycarbonate made of plastic, not made of metal. In particular, the base member 40 is made of brass in which the fastening part 42 protruding upward is made of metal. On the other hand, the locking jaw 44 formed at the lower end of the fastening part 42 is made of a polycarbonate material made of high-strength plastic and is molded by an insert injection method to be integrally coupled between different materials. A sectional view of the base member 40 is shown in FIG.

As shown in FIG. 3, the head 44 of the base member 40, which is in contact with the coolant in a state of being inserted into the coolant hole of the mold, has a diameter larger than that of the upper fastening portion 42, and is made of metal. The fastening part 42 is made of a structure surrounding the lower end.

In addition, a locking groove 42a of a predetermined depth in the circumferential direction is formed on the outer circumferential edge of the lower end of the fastening part 42 to prevent separation between the metal fastening part 42 and the plastic head part 44 after molding. ) Is formed so that a part of the material injected during the insert injection is inserted into the engaging groove (42a) to increase the coupling force between the fastening portion 42 and the head 44 as well as the fastening portion ( 42) is configured to reduce the risk of easy separation.

On the other hand, Figure 5 shows a state in which each configuration of the closure plug 20 according to the present invention made of the above-described configuration is coupled to the cooling water Hong of the mold.

The mold coolant hole sealing stopper 20 according to the present invention is a fastening bolt 22 of the upper end portion, the seat member 24, expansion springs 26, which is fitted to the outer periphery of the male screw portion of the fastening bolt 22, pressure Ring 28, the first rubber ring 30 is fitted, the fastening bolt 22 in the state in which the second rubber ring 31 and the washer 35 is fitted on the outer periphery of the fastening portion 42 of the base member 40 ) And the base member 40 are coupled to each other and mounted inside the cooling water hole of the mold in a state in which a plurality of components are integrally coupled (see FIG. 5 (a)).

As shown in (a) of FIG. 5, the mold coolant hole sealing stopper 20 according to the present invention is installed after being installed inside the coolant hole 50 of the mold in a state of being primarily coupled to one set. When the tool is inserted into the tool insertion groove 23a of the fastening bolt 22 exposed in the outward direction and further tightens the fastening bolt 22 to the base member 40, a plurality of components are provided by the fastening force of the fastening bolt 22. This is in close contact with each other.

In addition, since the fastening bolt is screwed to the base member 40 in the cooling water hole 50 of the mold, the head 23 of the fastening bolt 22 is inserted into the seat member 24 while the inner taper portion ( 25) the inner surface of the fastening bolt head 23 is in close contact.

In addition, as shown in Figure 5 (b), as the fastening bolt 22 is tightened the outer taper portion 27 of the seat member 40 of the pressing ring 28 is coupled to the lower end The pressing ring 28 is pressed toward the base member 40 while being in close contact with the inner tapered portion 29 formed on the inner surface.

The pressing force pressurized by the joining ring 28 is transmitted to the first rubber ring 30 installed thereafter, and the first rubber ring 30 is tightened by the fastening bolt 22 and the base member 40. While compressed by a certain portion in the radial direction expansion is made.

As the first rubber ring 30 is compressed and expanded in the cooling water hole 50, the first rubber ring 30 is closely adhered to the inner circumference of the cooling water hole 50 to seal the cooling water hole 50, and the first rubber ring 30 is transferred to the first rubber ring 30. The applied pressing force is transmitted to the second rubber ring 31 again through the washer 35.

The pressing force transmitted to the second rubber ring 31 is expanded in the radial direction while being compressed to a predetermined portion as in the first rubber ring 30 to be in close contact with the inner circumference of the cooling water hole 50 to close the cooling water hole. .

Although the plurality of rubber rings applied to the closure plug of the present invention have a solid structure, as shown in FIGS. 6 and 7, the rubber rings 30 ′ and 31 ′ having hollow parts therein. ) May be used.

That is, the mold is continuously subjected to a constant impact and load for a long time in order to continuously produce the same product after being processed, the impact is also transmitted to the sealing plug inserted into the cooling water hole of the mold.

Therefore, even if the closure plug is subjected to continuous shock, even if the male threaded portion of the fastening bolt 22 is screwed to the female threaded portion of the base member 40, the locked state is sufficiently likely to be relaxed, and the coupling force of the fastening bolt is relaxed. The diameter of the rubber ring, which has been compressed and expanded by the pressing force of the fastening bolt, is reduced.

At this time, since the cross section of the solid rubber ring is expanded due to the high-compression force, even if the tightening force of the fastening bolt 22 is slightly relaxed, it is returned to its original state and spaced apart from the inner circumference of the closed cooling water hole, so that the coolant can be easily There is a possibility of leakage.

However, in the case of using the hollow rubber rings 30 'and 31' shown in Figs. 6 and 7, the hollow rubber rings 30 'and 31' are easily connected to the fastening force of the fastening bolt 22. Even if the tightening force of the fastening bolt is partially relaxed, the contraction amount is relatively small due to the elastic force of the air filled therein, so that the state of close contact with the inner circumference of the cooling water hole is maintained as it is, thereby preventing the cooling water from leaking, Provides useful effects that can be reduced.

As such, the mold coolant hole sealing plug 20 according to the present invention, which is screwed between the fastening bolt and the base member after being installed into the coolant hole 50 of the mold, is the coolant in the central axis direction of the coolant hole of the mold. Blocked by the outer surface of the head 44 of the member 40, the gap between the edge of the head 44 and the inner periphery of the coolant hole is closed by the first and second rubber rings 30, 31 The coolant hole is completely sealed to prevent the coolant supplied to the inside of the mold from leaking to the outside through the coolant hole in which the sealing plug of the present invention is installed.

In particular, the head 44 of the base member 40 which is in direct contact with the cooling water flowing inside the mold in the closure plug 20 according to the present invention is provided by being molded of polycarbonate made of plastic excellent in heat resistance and impact resistance In addition, since the metal fastening portion 42 is sealed by the second rubber ring 31, the washer and the first rubber ring 30 by contact with the high temperature cooling water, the metal fastening portion 42 is closed inside the mold. Contact with moisture is blocked to prevent corrosion and oxidation, further improving the durability of the mold.

2,22: Fastening bolt 3,23: Head
4,24: Seat member 5,23a: Tool insertion groove
6,26: expansion spring 8, 28: pressure ring
10: rubber ring 12,40: base member
13, 42: fastener 14,44: head
15, 20: mold cooling water hole sealing plug 24a: fitting hole
25, 29: inner tapered portion 27: outer tapered portion
30,31 ': 1st rubber ring 31,31': 2nd rubber ring
32: hollow part 42a: locking groove
44: head 45: seating surface
50: coolant hole

Claims (4)

In the mold cooling water hole sealing plug which is inserted into the cooling water hole of the mold to seal the cooling water hole to the outside,
The closure cap includes a fastening bolt, a base member to which the fastening bolt is coupled, a seat member made of plastic, an expansion spring, a pressurizing ring made of plastic, a first rubber ring, a washer, and a second member between the fastening bolt and the base member. The rubber ring is configured to be inserted in order, wherein the base member is composed of a metal fastening portion formed with a female thread portion coupled to the male screw portion of the fastening bolt inside the central portion thereof, and has a larger diameter than the fastening portion at the lower outer periphery of the fastening portion. A mold cooling water hole sealing stopper, comprising a structure in which a plastic head having a predetermined height is formed. The method of claim 1,
The base member is a mold cooling water hole sealing stopper, characterized in that the metal coupling portion and the plastic head portion is integrally molded by the insert injection method. delete The method according to claim 1 or 2,
The first and second rubber rings are closed mold cooling water hole, characterized in that the hollow structure formed with a hollow portion therein.
KR2020120009682U 2012-10-25 2012-10-25 Stopcock of the Mold coolant hole KR200467581Y1 (en)

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KR2020120009682U KR200467581Y1 (en) 2012-10-25 2012-10-25 Stopcock of the Mold coolant hole

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Application Number Priority Date Filing Date Title
KR2020120009682U KR200467581Y1 (en) 2012-10-25 2012-10-25 Stopcock of the Mold coolant hole

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101586450B1 (en) 2014-08-06 2016-01-21 장영현 Block device mold coolant flow way
KR101586449B1 (en) * 2014-08-06 2016-02-02 장영현 Block device mold coolant flow way
KR101795346B1 (en) * 2017-08-17 2017-11-09 추창오 Cooling hole cap with cooling water partitioning plate for injection mold
KR101960445B1 (en) * 2017-09-15 2019-03-20 김용태 Cooling Partition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200393425Y1 (en) 2005-05-26 2005-08-22 김기용 Stoper for cooling pipe
KR101158727B1 (en) 2011-06-22 2012-06-22 이현직 A stopper for cooling pipe of dye

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200393425Y1 (en) 2005-05-26 2005-08-22 김기용 Stoper for cooling pipe
KR101158727B1 (en) 2011-06-22 2012-06-22 이현직 A stopper for cooling pipe of dye

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9457492B2 (en) 1920-08-06 2016-10-04 Young-hyun JANG Assembly for blocking cooling water channel in mold
KR101586450B1 (en) 2014-08-06 2016-01-21 장영현 Block device mold coolant flow way
KR101586449B1 (en) * 2014-08-06 2016-02-02 장영현 Block device mold coolant flow way
KR101795346B1 (en) * 2017-08-17 2017-11-09 추창오 Cooling hole cap with cooling water partitioning plate for injection mold
KR101960445B1 (en) * 2017-09-15 2019-03-20 김용태 Cooling Partition

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