KR20180082834A - Manifold for distribution cooling water and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a manifold for distributing mold cooling water and a method of manufacturing the same. The manifold of the present invention includes: a hollow square pillar-shaped body unit of which both ends are opened; an inflow unit which is disposed in one end of the body unit so that the inflow unit is communicated with the body unit; a base unit which is disposed in the other end of the body unit to close the other end of the body unit; and a plurality of connection units which are disposed on one side of the body unit so that the connection units are communicated with the body unit, wherein the body unit including a seamless pipe of which a width directional cross-section is formed in a circular shape can be plastic worked so that the width directional cross-section has an outer surface bent to a rectangular shape and an inner surface bent to a rectangular shape. The present invention not only can reduce manufacturing costs by reducing and modifying the manufacturing process, but also can improve productivity by reducing the manufacturing time compared to the prior art. Further, the present invention can improve quality and reliability of the product by forming a product with uniform thickness in all directions.

Description

TECHNICAL FIELD [0001] The present invention relates to a manifold for distributing mold cooling water and a method for manufacturing the manifold.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manifold for distributing mold cooling water and a method of manufacturing the same, and more particularly, to a manifold for distributing cooling water to a plurality of molds and a method of manufacturing the same.

In general, a mold is one of the important factors used in various fields to be used in a process of processing an outer shape of a product. In particular, in the case of a die casting or an injection mold, an essential component used for manufacturing a shape of a metal or a synthetic resin product to be.

In particular, since injection molds inject molten resin into a mold and cool it to produce a product having a specific shape, when the mold is continuously used, the temperature of the mold may rise to cause defective products. Therefore, And a mold cooling device for preventing the temperature of the mold from rising by continuously flowing cooling water in the flow path. The die casting also includes a mold cooling device for the same reason.

As described above, the temperature control of the mold plays an important role in the injection process, and various methods have been proposed and used.

For example, in the registered patent No. 676566 (registered on Apr. 24, 2007), the switching timing of the high-temperature medium and the low-temperature medium, which is expected to delay the heat transfer from the heating medium to the low-temperature medium, And a temperature of the mold temperature adjusting device is reduced to reduce the temperature change with respect to the set temperature even with the high temperature medium and the low temperature medium to reduce the energy loss and to obtain the mold temperature optimum for the injection process.

Japanese Patent No. 1264893 (registered on May 3, 2013) discloses a mold closing step of (a) preparing molds for upper mold and lower mold to perform injection molding; (b) an injection mold heating step of supplying a heating medium to the injection mold and circulating the injection mold to maintain the temperature of the injection mold at a high temperature of 100 ° C to 130 ° C in order to satisfy physical characteristics of the injection mold after completion of the mold closing step; (c) an injection step of maintaining a constant pressure until the gate of the injection mold is solidified after completion of the injection mold heating step, and filling the molten resin with the cavity of the upper mold through an injector; (d) After completion of the injection step, the cooling water is supplied to the cooling water holes formed in the lower mold, the upper mold and the lower mold are spaced apart from each other by a predetermined distance for cooling the molten resin, A cooling step of cooling the cavity surface of the mold and the surface of the injection mold; (e) a secondary mold opening step of opening the injection mold for taking out the solidified material after completion of the cooling step; And (f) a take-out step of taking out an injection product after the secondary opening step.

Although a configuration of the above-described complicated mold cooling system has been proposed, ordinary mold cooling is controlled using cooling water, and the cooling water for mold cooling is distributed through a separately configured manifold.

The manifold includes a body having a space formed therein, a supply port attached to one side of the body for supplying cooling water, and a plurality of exhaust ports attached to the other side of the body for branching the supplied cooling water, The discharge port is guided to an internal flow path formed in the mold through a separate pipeline.

A typical manufacturing method of the body is to prepare a stainless steel of a rectangular parallelepiped body, and then to process the surface of the body, The through-hole is formed deeply in the attached portion (mainly the side surface). Then, a through hole is formed in a portion to which the discharge port is attached so as to communicate with the through hole of the supply port. Since a plurality of through holes are formed in the discharge port, it takes much time to manufacture the entire body. Then, the connection member is attached to the processed supply port and the exhaust port to complete the entire manufacturing process.

In the conventional method as described above, in order to form the body of the rectangular parallelepiped, a separate metal mold is prepared and extruded, or the two L-shaped steel are arranged in a rectangular parallelepiped shape, and the stainless steel is processed, There is a problem that an expensive material cost is consumed.

As shown in FIG. 5, the body 10 having a rectangular parallelepiped outer shape has a flat outer surface, but a curved surface is formed in a circular shape in the inner space 20. Therefore, the body 10 has a different thickness for each drilled position, There is a problem that drilling or breakage of the body 10 occurs when the through-hole 30 is formed in the through hole 30, resulting in a decrease in work efficiency.

KR 10-0676566 B1 KR 10-1264893 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a seamless pipe having a circular cross section in the width direction, To provide a manifold for distributing mold cooling water having a uniform thickness and quality and high productivity, and a method of manufacturing the same.

Another object of the present invention is to provide a mold cooling water distributing manifold for forming a through hole in the inner and outer surfaces of a square pipe having uniform thickness and preventing damage to the pipe and a manufacturing method thereof .

According to an aspect of the present invention, there is provided a manifold for distributing mold cooling water, comprising: a hollow rectangular columnar body having open ends at both ends; An inlet portion disposed at one end of the body portion to communicate with the body portion; A base portion disposed at the other end of the body portion to close the other end of the body portion; And a plurality of connecting portions disposed on one side of the body portion to communicate with the body portion, wherein the body portion has a circular cross section in the width direction and has a rectangular cross section in the width direction It can be plastic-worked so as to have a bent outer surface and an inner surface bent in a square shape.

Preferably, the body portion may have a predetermined cross-sectional thickness in the width direction.

Preferably, the plurality of connection portions are arranged in a zigzag manner on one surface of the body portion.

Preferably, the body portion includes an inlet hole formed at one end to allow the cooling water to flow into the interior; And an outlet hole formed on one surface of the cooling water outlet to allow the cooling water to flow out to the outside. The inlet portion can be screwed with the inlet hole, and the plurality of connection portions can be screwed with the outer peripheral surface of the outlet hole.

According to another aspect of the present invention, there is provided a method of manufacturing a manifold for distributing mold cooling water, the method comprising the steps of: (a) forming a manifold having a hollow opening at both ends, Preparing a pipe and an inlet, a connection and a base; (b) sintering the seamless pipe having a circular cross section in the width direction such that the cross section in the width direction has an outer surface bent in a square shape and an inner surface bent in a square shape; (c) piercing an outlet hole on at least one side of the plasticized pipe to communicate with the hollow; And (d) providing an inlet and a base at both ends of the pipe, and installing a connection portion to the outlet hole of the pipe.

Preferably, in the step (b), the plastic working may be performed by pressing a seamless pipe having a circular cross section in the width direction.

Preferably, in the step (c), the outlet hole may be screwed to the connection portion.

Preferably, in the step (c), the outlet hole may be screwed to the connection portion.

The present invention can reduce manufacturing costs and shorten the manufacturing time, thereby improving productivity, by reducing and changing the manufacturing process.

Further, since the four sides of the present invention are formed to have uniform thickness, breakage of the drill or pipe is prevented when forming the through hole, thereby improving the work efficiency and improving the quality and reliability of the product. In addition, the present invention reduces the weight by 50% or more than that of the conventional material, thereby significantly reducing the cost.

1 is a perspective view of a manifold for distributing mold cooling water according to an embodiment of the present invention.
2 is a perspective view illustrating a body portion of a manifold for distributing mold cooling water according to an embodiment of the present invention.
3 (a) is a sectional view taken along the line AA 'in Fig.
3 (b) is a cross-sectional view of BB 'in Fig.
4 is a flowchart illustrating a manufacturing method of a manifold for distributing mold cooling water according to an embodiment of the present invention.
5 is a view showing a conventional mold cooling water distribution manifold.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be " connected, "" coupled, " or " connected. &Quot;

Hereinafter, a manifold for distributing mold cooling water according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a manifold for distributing mold cooling water according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating a body portion of a manifold for distributing mold cooling water according to an embodiment of the present invention, and FIG. 1 is a sectional view taken along the line AA 'in Fig. 1, and Fig. 3 (b) is a sectional view taken along line BB' in Fig.

The manifold for distributing mold cooling water according to an embodiment of the present invention includes a body 100 in the form of a square pillar, a flat plate (not shown) disposed at one end of the body 100, An inflow part 200 coupled to the inflow hole 130, a base part 300 attached to the other end of the body part 100, a plurality of outflow holes 140 formed on one side of the body part 100, And a connection part 400 to be coupled to the hole 140.

1 and 2, a manifold for distributing mold cooling water according to an embodiment of the present invention may include a body portion 100, an inlet portion 200, a base portion 300, and a connection portion 400 have.

2 to 3, the body 100 may have a square pillar shape. The body 100 may be hollow, that is, an inner space, and the hollow may be formed with both open ends. The body portion 100 may include an outer surface 110 and an inner surface 120.

At this time, the cooling water flowing through the inflow hole 130 is located in the hollow formed inside the body part 100, and then the cooling water can be discharged through the outflow hole 140 and distributed to the necessary molds. The inlet hole 130 and the outlet hole 140 are formed with threads (not shown) and can be screwed into the inlet portion 200 and the connection portion 400, which will be described later.

Although not shown in the drawing, the body part 100 can be manufactured by plastic working a seamless pipe having a circular cross section in the width direction. For example, a seamless pipe having a circular cross section in the width direction is in a state having hollows at both ends, and the manufacturer presses the outer surface of the pipe through a press (not shown) or the like to deform the cross- . In detail, a support having a width and a length according to the manufacturer's selection is inserted into a hollow circular pipe inner hollow, and the cross-sectional shape of the pipe is formed into an outer surface 110 and the inner surface 120 bent in a rectangular shape.

Although the outer surface 110 and the inner surface 120 of the body part 100 are shown in a rectangular shape in the width direction of the body part 100 in the figure, An outflow hole 140 is formed at one end of the body portion 100 on one side of the inflow hole 130 and the body portion 100 so that the air hole 130 and the outflow hole 140 are communicated with each other through the inflow hole 130 and the outflow hole 140, The shape is not particularly limited as long as it is communicated with the outside. For example, the cross-section of the body portion 100 may be polygonal, such as triangular or pentagonal, depending on the intent of the manufacturer.

3 (a) and 3 (b), the body portion 100 may have a predetermined cross-sectional area in the width direction. In the drawing, the slope of the rectangular body 100 may have a thickness of '?'.

The inlet portion 200 may be disposed at one end of the body portion 100 in the form of a tube or a valve. The inlet portion 200 may communicate with the body portion 100. The inlet portion 200 may serve as a passage for allowing the cooling water to flow into the hollow of the body portion 100 from an external cooling water supply portion (not shown). The inlet portion 200 may have a thread formed on the outer circumferential surface thereof and may be screwed with the inlet hole 130.

The base part 300 may be disposed at the other end of the body part 100. That is, the body part 100 may be mounted on the base part 300 and supported by the base part 300. The base portion 300 may block the other end of the opened body portion 100 to close the hollow portion. 1, the base unit 300 is shown to be larger than the other end area of the body unit 100. However, the base unit 300 is disposed at the other end of the body unit 100, If the hollow can be closed, its size is not particularly limited. For example, the base portion 300 may be formed and disposed corresponding to the other end of the body portion 100, such as the flat plate disposed at one end of the body portion 100.

The connection part 400 may be disposed on one side of the body part 100. A plurality of connecting portions 400 may be provided. In the drawing, a plurality of connecting portions 400 are arranged on one side of the body portion 100 in a zigzag manner with respect to a virtual center line along the longitudinal direction. However, the connection part 400 is not limited to this, but may be disposed on the other side of the body part 100 according to the intention of the manufacturer, or may be arranged in a non-zigzag manner. The connection part 400 is formed with a thread (not shown) on the outer circumferential surface thereof and can be screwed with the outflow hole 140.

Hereinafter, a method for manufacturing a mold cooling water distribution manifold according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 4 is a flowchart illustrating a method of manufacturing a manifold for distributing mold cooling water according to an embodiment of the present invention. Referring to FIG. 4, a method for manufacturing a mold cooling water distribution manifold according to an embodiment of the present invention includes: ) To (d) steps S10 to S40.

Each step will be described in detail below.

Material preparation step ( S10 )

(a) is a step of preparing respective materials for manufacturing a manifold for distributing mold cooling water through the present invention, and includes a seamless pipe having a circular cross section, an inlet portion 200, a connecting portion 400, and a base portion 300 are prepared.

At this time, the inlet portion 200 and the connection portion 400 may be formed with threads (not shown) at one end of the outer circumferential surface. In addition, since the inlet portion 200 and the connection portion 400 are normally used as standard products, it is preferable to prepare the inlet portion 200 and the connection portion 400 in advance.

Circular pipe plastic working step S20 )

In step (b), the seamless pipe having a circular cross section prepared in step (a) is subjected to plastic working in the form of a rectangular cross section.

Although not shown in the drawing, the body part 100 can be manufactured by plastic working a seamless pipe having a circular section. For example, a seamless pipe having a circular cross section is hollow and has both open ends. The manufacturer can press the outer surface of the pipe (not shown) or the like to deform the cross section of the pipe into a rectangular shape . In detail, a support having a width in accordance with the manufacturer's selection is inserted into a circular hollow pipe, and the cross-sectional shape of the pipe is formed into a rectangular outer surface 110 by pressing the press and the support, And the inner surface 120 bent in a rectangular shape.

Although the outer surface 110 and the inner surface 120 of the body part 100 are shown as being rectangular in cross section of the body part 100 in the figure, As long as the inflow hole 130 and the outflow hole 140 on one side are formed, the shape is not particularly limited. For example, the cross-section of the body portion 100 may be polygonal, such as triangular or pentagonal, depending on the intent of the manufacturer.

3 (a) and 3 (b), the body portion 100 may have a predetermined cross-sectional area in the width direction. In the drawing, the slope of the rectangular body 100 may have a thickness of '?'.

Outflow ball  Perforation phase ( S30 )

(c) In the step of piercing the outflow hole, the outflow hole 140 is formed in the body portion 100 processed in the step (b) by machining. The maker forms a plurality of outflow holes 140 for joining the connection parts 400 at desired positions through machining such as drilling.

Since each of the four surfaces of the body portion 100 is formed to have a constant thickness of '?' So that the cross-section is formed into a square shape, each surface may be regarded as a flat plate having a thickness of?. It is usually easier to drill a hole in one side of a pipe having a cross section in the width direction than the pipe having a circular cross section in the width direction when drilling a hole in the pipe with a drill (not shown) or the like. Such a tool, such as a drill, evenly distributes the pressure in a state perpendicular to the plane when drilling the hole in the plane, but if the hole is punctured in a part of the pipe whose cross section in the width direction is circular, Thereby causing breakage of the drill.

In addition, if necessary, the manufacturer may further form a thread (not shown) for coupling the connection parts 400 to the outflow hole 140.

Coupling step ( S40 )

(d) In the coupling step, the inlet part 200 and the connection part 400 can be coupled to the body part 100 manufactured through the step (c), and (d) It is possible to complete the manufacture of the manifold for distributing the mold cooling water. At this time, a plate (not shown) having an inlet hole 130 formed at one end of the body 100 may be installed before the step (d).

The inlet portion 200 and the connection portion 400 may be screwed into the inlet hole 130 and the outlet hole 140, respectively. In this case, a sealing member may be added to the inflow part 130 and the outflow hole 140 to partially seal the inflow part 200 and the connection part 400.

However, the body 100 may be made of stainless steel, and the inlet 200 or the connection 400 may be formed of brass or the like. , And the body part 100 may also be constructed using generalized surface treated steel.

It is to be understood that the present invention is not limited to the above-described embodiment, but may be modified in various other forms without departing from the spirit and scope of the invention as defined in the appended claims. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: body portion 110: outer surface
120: inner surface 130: inflow hole
140: outlet hole 200: inlet portion
300: base part 400: connection part

Claims (8)

A hollow square columnar body portion having open ends at both ends thereof;
An inlet portion disposed at one end of the body portion to communicate with the body portion;
A base portion disposed at the other end of the body portion to close the other end of the body portion; And
A plurality of connection portions disposed on one surface of the body portion to communicate with the body portion;
Wherein the mold cooling water distributing manifold comprises:
Wherein the body portion is formed by molding a seamless pipe having a circular cross section in the width direction and having an outer surface bent in a rectangular shape in cross section in the width direction and an inner surface bent in a square shape.
The method according to claim 1,
Wherein the body portion has a cross-section in the width direction of a predetermined thickness.
The method according to claim 1,
Wherein the plurality of connection portions are arranged in a zigzag manner on one side of the body portion.
The method according to claim 1,
The body portion
An inflow hole formed at one end to allow the cooling water to flow into the inside; And
And an outlet hole formed on one surface of the cooling water outlet so that the cooling water flows out to the outside,
Wherein the inlet portion is threadedly engaged with the inlet hole and the plurality of connection portions are threadedly engaged with an outer peripheral surface of the outlet hole.
(a) preparing a seamless pipe having an opening at both ends and a circular cross-section in the width direction, an inlet, a connection and a base;
(b) sintering the seamless pipe having a circular cross section in the width direction such that the cross section in the width direction has an outer surface bent in a square shape and an inner surface bent in a square shape;
(c) piercing an outlet hole on at least one side of the plasticized pipe to communicate with the hollow; And
(d) installing an inlet and a base at both ends of the pipe, and connecting the outlet to the outlet of the pipe;
Wherein the mold cooling water distributing manifold has a plurality of projections.
The method of claim 5,
Wherein in the step (b), the seamless pipe having a circular cross section in the width direction is pressurized to process the plastic cooling water distributing manifold.
The method of claim 5,
Wherein the outlet hole is screwed to the connection portion in the step (c).
The method of claim 5,
Wherein the outlet hole is screwed to the connection portion in the step (c).

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