KR101669496B1

KR101669496B1 - styrofoam molding device

Info

Publication number: KR101669496B1
Application number: KR1020150048173A
Authority: KR
Inventors: 김성훈
Original assignee: 김성훈
Priority date: 2015-04-06
Filing date: 2015-04-06
Publication date: 2016-10-26
Also published as: KR20160119472A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a styrofoam forming apparatus, and more particularly, to a styrofoam forming apparatus that forms a raw material supplied to a molding apparatus and forms a styrofoam, The present invention relates to a styrofoam forming apparatus for ensuring ease of assembly and productivity while preventing the breakage of the apparatus and ensuring robust operating performance by simplifying the entire structure of the mold.
A mold means 100 constituted of a stationary mold 10 and a movable mold 30 and molding the raw material supplied into styrofoam; And an ejecting means (200) provided in the mold means (100) for separating an object on which molding is completed,
The ejecting means 200 includes a rod 210 which is fastened to the inside of the stationary mold 10 so that the object to be formed is pushed and separated by the pushing portion 211 at the tip thereof; A fastener 220 for guiding forward and backward movement of the rod 210 while fastening the rod 210 to the stationary mold 10; An ejection plate 230 moving forward and backward in response to the operation of the mold means 100 and pushing and moving the end of the rod 210 in a forward process; And an advance recovery means 240 fixedly coupled to a rear portion of the rod 210 and attached to one surface of the eject plate 230 by the magnetic force of the permanent magnet 241, 210 have a structure in which the forward movement is restored in a state of being attached to the eject plate 230 by using the magnetic force of the advance / return means 240 in the retreat process of the eject plate 230.

Description

Styrofoam molding device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a styrofoam forming apparatus, and more particularly, to a styrofoam forming apparatus that forms a raw material to be supplied to a molding apparatus and forms a styrofoam, The present invention relates to a styrofoam forming apparatus for ensuring ease of assembly and productivity while preventing the breakage of the apparatus and ensuring robust operating performance by simplifying the entire structure of the mold.

Generally, in order to produce a styrofoam molding, a raw material is usually supplied to a mold equipped with a fixed mold and a movable mold, and the mold for a molding apparatus is provided with an ejecting device for separating the molded work from the mold.

Such an ejecting apparatus has a structure in which a pin-shaped rod enters a mold, and the rod is partially and protruded from the inside of the mold, .

In this background, various molds for molding apparatuses have been developed.

Korean Patent Registration No. 10-0930276 (registered on November 30, 2009) 'discloses a conventional technology as a background of the present invention. An inner plate and an outer plate respectively mounted on both sides of the frame; A mold provided on the inner plate; And an ejector for taking out a molded product in the mold,

The ejector including an ejecting rod passing through the outer plate and the mold; A fastening device provided on the outer plate for supporting and advancing / retreating the ejecting rod; And a restoring spring provided on an outer surface of the ejecting rod outside the outer plate for a restoring operation of the ejecting rod, wherein the clamping device includes a through hole formed at a central portion to penetrate the ejecting rod, A first fastening part having a fastening part formed on one side of the outer surface so as to be caught by the outer plate and a female threaded part formed on the inner side of the fastening part so as to be larger than the through hole; A second fastening member which is fastened to the male threaded portion passing through the outer plate; A first sealing member sealing a gap between the latching portion and the outer plate; A second sealing member installed in the female threaded portion of the first fastener and sealing a gap between the outer surface of the ejecting rod and the through hole; And a third fastening member fastened to the female threaded portion of the first fastening member so as to press the second sealing member.

However, in view of the conventional problems,

When a long time molding apparatus is used, a restoring spring for restoring operation of the ejecting rod repeatedly pushes the fastening device, and a clearance is generated in the sealing member of the fastening device. Due to the clearance, leakage of steam or cooling water inside the mold A large number of phenomena occur.

In addition, since the ejecting rod of the conventional molding apparatus has a structure for performing a restoring operation based only on the elasticity of the restoring spring, when the restoring spring is broken by the fatigue load due to continuous use or when the elastic force is weakened, There was another problem that this was not done smoothly.

Further, since the ejecting rod of the conventional molding apparatus has a structure in which a restoring spring for restoring operation is required to be fastened, there is another problem that it is difficult to assemble the mold according to inconvenience.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems and it is an object of the present invention to provide a molding apparatus in which a rod provided inside a mold is configured to be returned to a forward movement in a state of being attached to the eject plate using the magnetic force of the permanent magnet, The present invention is directed to a styrofoam forming apparatus which is capable of ensuring ease of assembly and productivity as well as preventing breakage of the apparatus and ensuring robust operating performance as the structure is simplified by omitting return springs.

According to an aspect of the present invention, A mold means for molding the raw material supplied from the stationary mold and the movable mold and made of styrofoam; And an ejecting means which is provided in the mold means in one or more and which separates the molded object,

Wherein the ejecting means

A rod fixed to the inside of the stationary mold so as to be pierced so that the pressing portion of the tip is pushed apart when the forming object is completed; A fastening member for guiding the movement of the rod in the forward and backward directions while fastening the rod to the stationary mold; An eject plate that moves forward and backward in response to the operation of the mold means and pushes the end of the rod in a forward process to move the rod; And forward and backward means fixedly coupled to a rear portion of the rod and attached to one surface of the eject plate by the magnetic force of the permanent magnet,

Wherein the rod includes returning forward movement in a state in which the rod is attached to the ejection plate by using the magnetic force of the advance /
The forward recovery means comprises:
Further comprising an extension pipe for partially adjusting the stroke of the rod for forward movement by a function of adjusting an insertion length of the rod,
Wherein the extension pipe further comprises a fixing member for fixing the insertion length of the rod after the insertion length of the rod is adjusted by an action of a plurality of fixing holes formed on the outer surface of the rod,
The permanent magnet may be formed in a ring shape and may be supported by using a pin connecting hole penetratingly coupled to a rear end of an extension pipe coupled to the rod and inserted and fixed to one side of the extension pipe, Further comprising being fixed by an action of supporting one face,
The permanent magnet further includes a protective cap coupled to surround the outer surface of the permanent magnet so as to prevent the permanent magnet from being damaged from external impact,
Wherein the ejecting means has a cooling hole penetratingly formed inside the fixing member, a cooling water hose is connected to the cooling hole to supply cooling water,
The cooling water supplied from the cooling water hose is injected into the space formed inside the rod through the cooling hole to cool the rod.
Further comprising a cooling operation hole in which cooling water is supplied to the inside of the rod to cause a cooling action, the cooling action hole being formed to an exhaust hole passing through a front portion of the rod,
And a packing for sealing a gap between the rod and the extension pipe at both ends of the extension pipe to prevent loss of cooling water when the cooling water is supplied to the fixing member.

According to the present invention, since the forward movement is restored in the state that the rod is attached to the eject plate that is moved forward and backward by the magnetic force of the permanent magnet, the structure is simplified by omitting the return spring, And it is possible to ensure the breakage of the apparatus and the robust operation performance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view and a partial enlarged view of a styrofoam molding apparatus according to an embodiment of the present invention; FIG.
2 is a perspective view of an ejecting means in a styrofoam molding apparatus according to an embodiment of the present invention;
3 is a side view and a cross-sectional view of the main portion of an ejecting means in a styrofoam molding apparatus according to an embodiment of the present invention.
Fig. 4 is an operational state diagram of a styrofoam molding apparatus and an ejecting means according to an embodiment of the present invention; Fig.
5 is a view showing an ejecting means in a styrofoam molding apparatus according to another embodiment;

The styrofoam forming apparatus according to the present invention will be understood by those skilled in the art with reference to the accompanying drawings.

In the following description of the exemplary embodiments of the present invention, a detailed description of components that are widely known and used in the art to which the present invention belongs is omitted, and unnecessary explanations thereof are omitted. It is to communicate the point more clearly.

1 to 3 are views illustrating a styrofoam forming apparatus according to an embodiment of the present invention.

Accordingly, the styrofoam molding apparatus 1 will be schematically described. The molding apparatus 100 comprises a fixed mold 10 and a movable mold 30; And an ejection means (200).

Hereinafter, the constitution of each part of the present invention will be described in detail.

First, the mold means 100 composed of the fixed mold 10 and the movable mold 30 is supplied with the raw material to the mold space provided inside the stationary mold 10 and the movable mold 30, For molding with Styrofoam.

The fixed mold 11 and the movable mold 31 are mounted on the inner side of the stationary mold 11 and the movable mold 30 respectively and the stationary mold 11 and the movable mold 31 are integrated with each other, Thereby forming a molding space S for styrofoam molding.

The stationary frame 10 includes a stationary frame 12 having both open sides; And further includes an inner plate 13 and an outer plate 14 which are respectively coupled to both open sides of the fixed frame 12.

The inner plate 13 and the outer plate 14 are fastened to the fixing frame 12 by fastening the fixing screws 15 to the rim portions.

The stationary mold 11 is fixed to the flange portion in a state where the stationary mold 11 is engaged with the mold engagement hole 16 of the inner plate 13, And fastened to the inner plate 13 by tightening the screws 17.

The stationary mold 10 further comprises a plurality of raw material supply devices 18 for supplying a raw material resin for forming the styrofoam to the molding space S.

The raw material supply device 18 is installed so as to penetrate through the outer plate 14 and the stationary mold 11 to enter the stationary mold 10.

The fixed mold 10 further includes a steam supply port 21 which is connected to the space between the back surface of the stationary mold 11 and the outer plate 14 to supply steam.

The steam supplied to the steam supply port 21 heats the stationary mold 10 and enters the molding space S through a plurality of steam inlets 11a formed in the stationary mold 10, And the foaming molding of the raw resin is performed by heating.

The fixed mold 10 includes a support member 23 inserted into a space between the outer plate 14 and the back surface of the stationary mold 11 to support the stationary mold 11, And cooling water injection means (25) for cooling the stationary mold (11) by injecting cooling water.

It is preferable that a drain hole 22 for discharging the cooling water flowing down to the lower portion of the fixed frame 12 is formed.

The moving mold 30 further comprises a moving frame 32 having both sides opened and an inner plate 33 and an outer plate 34 mounted on both sides of the moving frame 32. [

The movable mold 31 is a mold that protrudes to enter the interior of the stationary mold 11.

Preferably, the moving frame 32 is provided with a steam supply port 41 at an upper portion thereof and a drain port 42 at a lower portion thereof.

The movable mold 30 includes a support member 43 inserted in a space between the movable mold 31 and the outer plate 34 to support the movable mold 31, And cooling water injection means (45) for cooling the movable mold (31) by injecting cooling water.

The support member 43 supports a plurality of reinforcing members 48 provided on the inner surface of the inner plate 33.

The moving mold 30 further includes a hydraulic cylinder 50 for moving the moving mold 30 so that the stationary mold 11 and the moving mold 31 cooperate with each other.

The hydraulic cylinder 50 is fixed to the outer plate 34 side.

Meanwhile, the ejecting means 200 is for separating the molded object from the mold means 100.

The ejecting means 200 includes a rod 210, a fastener 220, an ejection plate 230, and a forward / backward means 240.

The rod 210 is fastened to the inside of the stationary mold 10 so that the pressing part 211 of the tip is pushed to separate the object to be molded.

The rod 210 is coupled to the inside of the mold means 100 in the form of a shaft having a space therein, and the tip thereof is moved forward and backward in a molding space of styrofoam.

In addition, the rod 210 is formed with a pressing portion 211 which is formed at a front end thereof so that a flat surface thereof is protruded so as to be provided on the front surface thereof, and a plurality of fixing holes 212 are formed in a longitudinal direction .

The pressing part 211 is a part for directly separating the molding object from the mold means 100 when the styrofoam molding is completed and the fixing hole 212 is formed in the fixing member 243 of the extension pipe 242, It is the part that takes.

The fastener 220 is for guiding the forward and backward movements while fastening the rod 210 to the stationary mold 10.

The fastening member 220 includes a first fastening member 221 fastened to the outer side plate 14 of the stationary mold 10 and a second fastening member 221 fastened to one outer surface of the first fastening member 221. [ A third fastening member 223 fastened to the other inner surface of the first fastening member 221 and a first sealing member 224 and a second sealing member 225.

The ejection plate 230 moves forward and backward in response to the operation of the mold means 100, and pushes the end of the rod 210 in a forward process to make it move.

The ejection plate 230 is formed in a plate shape and is positioned at a predetermined distance from the rear side of the fixed form 10 and connected to the movable mold 30 or connected to a separate cylinder device, So as to generate power to push and operate the rod 210.

The forward and reverse recovery means 240 is fixedly coupled to the rear portion of the rod 210 so that the rod 210 can be attached to one surface of the ejection plate 230 by the magnetic force of the permanent magnet 241 .

In addition, the forward / reverse recovery means 240 is coupled with a portion of the rod 210 to adjust the insertion length of the rod 210, thereby adjusting the stroke for the forward movement of the rod 210 (242).

The extension tube 242 includes a fixing member 243 for fixing the insertion length of the rod 210 after the insertion length of the rod 210 is adjusted by an action of being fastened to a plurality of fixing holes 212 formed on the outer surface of the rod 210, .

The fixing member 243 may be formed in the form of a spiral bolt and may be inserted into the fixing hole 212 in a state where the fixing member 243 is inserted into one side of the extension pipe 242, The movement before and after is fixed.

The forward / reverse recovery means 240 further includes a permanent magnet 241 on which a magnetic force is exerted.

The permanent magnet 241 is formed in a ring shape and is inserted into a rear end of an extension pipe 242 coupled to the rod 210 and is inserted into and fixed to one side of the extension pipe 242, Or is bent at the rear end of the extension pipe 242 to be fixed by the action of supporting one face of the permanent magnet 241. [

The permanent magnet 241 further includes a protective cap 244 coupled to surround the outer surface of the permanent magnet 241 to prevent the permanent magnet 241 from being damaged from an external impact.

The protective cap 244 is formed in the shape of a circular cover corresponding to the outer shape of the permanent magnet 241 and absorbs the impact of contacting the ejection plate 230 using rubber or urethane.

Accordingly, the rod 210 returns to the forward movement in a state where the rod 210 is attached to the ejection plate 230 by using the magnetic force of the advance / return means 240 during the retraction of the ejection plate 230.

4 is a view showing an operation state of the styrofoam molding apparatus and the ejecting means according to the embodiment of the present invention.

4 shows an operating relationship of the ejection means 200 in the molding process of the styrofoam molding apparatus 1 having the above-mentioned structure. The molding means 1 is used to perform the styrofoam molding The movable mold 30 is operated to be separated from the fixed mold 10 by the hydraulic cylinder 50.

At this time, the eject plate 230 connected to the movable mold 30 moves toward the rod 210 to advance the rod 210. When the rod 210 advances, (211) pushes the molding object to be separated from the mold means (100).

On the other hand, when the molding object is separated as described above, the movable mold 30 is returned to the fixed mold 10 side, and the ejection plate 230 is also moved to the original position.

At this time, as the permanent magnet 241 maintains the state of being attached to the ejection plate 230 by the magnetic force, the rod 210 also returns to its forward movement, thereby automatically and repeatedly performing the Styrofoam molding.

5 is a view showing an ejecting means in a styrofoam molding apparatus according to another embodiment.

5, in the styrofoam molding apparatus 1 of the above-described structure, the ejecting means 200 has a cooling hole 243a formed in the fixing member 243, The cooling water hose 250 is connected to the cooling water hose 250 to supply the cooling water,

The cooling water supplied from the cooling water hose 250 is injected into the space formed in the rod 210 through the cooling hole 243a to cool the rod 210. [

The cooling hole 243a has a tube connection structure at an outer end in a state where the cooling hole 243a is formed at the center of the inner side of the fixing member 243 as a through hole and the cooling water hose 250 is connected to the cooling hole 243a Respectively.

The cooling water hose 250 is connected to an external device for forming and supplying cooling water and a structure for connecting the end of the cooling water hose 250 to the cooling hole 243a is provided.

The cooling operation hole 210a is formed by supplying cooling water to the inside of the rod 210 to cause a cooling action. The cooling operation hole 210a is connected to an exhaust hole 210b.

As the cooling water supplied through the exhaust hole 210b is discharged, the cooling water is injected into the space between the outer plate 14 and the stationary mold 11 to cooperatively cool the rod 210, .

A seal 251 sealing the clearance between the rod 210 and the extension pipe 242 is provided at both ends of the extension pipe 242 in order to prevent loss of cooling water when the cooling water is supplied to the fixing member 243. [ Respectively.

At this time, the packing 251 is made of a rubber material and has such a shape as to be able to seal between the rod 210 and the extension pipe 242. When the rod 210 is fixed to the extension pipe 242, As it is closely attached, it has a closed structure.

As described above. While the present invention has been particularly shown and described with reference to certain preferred embodiments thereof, it is to be understood that the terminology used herein is for the purpose of describing the present invention only and is not intended to limit the scope of the claims. But is not intended to,

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be easy for anyone to know.

The movable mold 30, the mold means 100, the ejecting means 200, the rod 210, the fastener 220, the eject plate 230, the forward and backward means 240,

Claims

A mold means 100 constituted of a stationary mold 10 and a movable mold 30 and molding the raw material supplied into styrofoam; And an ejecting means (200) provided in the mold means (100) for separating an object on which molding is completed,
The ejecting means (200)
A rod 210 which is fastened to the inside of the stationary mold 10 so as to push the tip of the pressing part 211 to be separated,
A fastener 220 for guiding forward and backward movement of the rod 210 while fastening the rod 210 to the stationary mold 10;
An ejection plate 230 moving forward and backward in response to the operation of the mold means 100 and pushing and moving the end of the rod 210 in a forward process;
And forward and backward means 240 fixed to the rear portion of the rod 210 and attached to one surface of the ejection plate 230 by the magnetic force of the permanent magnet 241,
The rod 210 includes a return movement of the ejection plate 230 when the ejection plate 230 is attached to the ejection plate 230 by using the magnetic force of the advance /
The forward and reverse recovery means (240) comprises:
Further comprising an extension tube (242) for partially adjusting the stroke of the rod (210) by the action of adjusting the insertion length of the rod (210)
The extension tube 242 further includes a fixing member 243 for adjusting the insertion length of the rod 210 by an action of engaging with a plurality of fixing holes 212 formed on the outer surface of the rod 210, and,
The permanent magnet 241 is formed in a ring shape and is connected to a rear end of an extension pipe 242 coupled to the rod 210 and has a pin coupling hole 245 inserted and fixed to one side of the extension pipe 242 Or the rear end of the extension pipe (242) is bent and fixed by an action of supporting one face of the permanent magnet (241)
The permanent magnet 241 may further include a protective cap 244 coupled to surround the outer surface of the permanent magnet 241 to prevent the permanent magnet 241 from being damaged from external impact,
The ejection means 200 includes a cooling hole 243a formed through the fixing member 243 and a cooling water hose 250 connected to the cooling hole 243a to supply cooling water,
The cooling water supplied from the cooling water hose 250 may be injected into the space formed in the rod 210 through the cooling hole 243a to cool the rod 210.
A cooling operation hole 210a for supplying cooling water to the inside of the rod 210 to cause a cooling action is formed. The cooling operation hole 210a has an exhaust hole 210b passing through a front portion of the rod 210, Further comprising:
A packing 251 seals a gap between the rod 210 and the extension pipe 242 at both ends of the extension pipe 242 to prevent loss of cooling water when the cooling water is supplied to the fixing member 243 Respectively, of the styrofoam forming device.

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