KR101656647B1

KR101656647B1 - Extrusion molding apparatus

Info

Publication number: KR101656647B1
Application number: KR1020160095284A
Authority: KR
Inventors: 강구원
Original assignee: 강구원
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2016-09-09

Abstract

The present invention relates to an extrusion molding apparatus to consecutively manufacture extruded products having various shapes including hollow tubes having various inner diameters and outer diameters or a product without a hollow hole by extruding material using a single molding apparatus. According to the present invention, the extrusion molding apparatus comprises: a molding body of a cylindrical shape with open upper and lower portions, formed with an injection hole penetrated to inject an extrusion material to an inner portion on one side of an outer circumferential surface; an upper cover fixated on an upper portion of the molding body, having a hollow insertion guide pipe protruding to a lower direction inserted to the inside of the molding body; a long insertion rod installed on the upper side of the upper cover to be movable in a vertical direction of the upper cover, to be protruded to a lower direction by penetrating the insertion guide pipe of the upper cover; a vertically moving plate coupled to a hollow member of a cone shape with a vertex facing a lower direction on a lower end of the insertion rod; a lower cover fixated on a lower portion of the molding body, to guide the extrusion material injected to the injection hole of the molding body to a lower direction through the inside of the molding body; and an extruder fastened on a lower portion of the lower cover by screw, replaceably inserted with an extrusion plate with an extrusion window.

Description

[0001] EXTRUSION MOLDING APPARATUS [0002]

The present invention relates to an extrusion die apparatus capable of continuously producing a hollow tube having various inner and outer diameters by extruding an extruded material and extruded products of various shapes without hollows through a single die apparatus.

In general, extrusion molding refers to a processing method in which a material for extrusion is put into a cylinder, a material is squeezed and melted, and extruded with an extrusion die (die) to form a molded product having a predetermined shape, followed by cooling and solidifying the product.

An apparatus for producing a product through the above-described extrusion molding method is referred to as an extrusion molding apparatus (extruder), and can be largely divided into a screw type and a non-screw type according to the extrusion principle. The non-screw type means extruding a material using a ram, a roller or a cam, and the screw type means extruding a material through a screw.

A screw extruder can be divided into a single shaft and multiple shafts. The extruding of a material by a single screw as it is called is called a short shaft, and when two or more screws are engaged, the material is extruded.

Whichever extrusion method is used, the injection material is squeezed, melted and pushed out to the extrusion mold to continuously produce the molded products of a certain shape. The products such as hollow tube, hose, gasket, packing and molding are mainly produced.

When various products having various shapes are to be extruded and manufactured as described above, there is a problem that separate extrusion dies must be provided for each shape. However, there is a problem in that it is very difficult to provide a separate extrusion mold corresponding to various shapes such as a small company which mainly manufactures a small quantity of small quantity production.

It is an object of the present invention, which is devised to solve the above-mentioned problems, to provide a hollow tube capable of continuously extruding an extruded material and having a variety of inner and outer diameters, And an extrusion mold apparatus.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

According to an aspect of the present invention, there is provided an extrusion mold apparatus including a mold body having a cylindrical shape vertically opened and having an injection hole through which an extrusion material is injected, An upper cover fixedly coupled to the upper cover and having a hollow insertion guide tube projecting downwardly to be inserted into the mold body; a lower cover installed above the upper cover so as to be movable up and down with respect to the upper cover, An upper copper plate having a hollow insertion member formed to extend downward through the insertion guide tube and having a conical hollow member so that a vertex thereof is directed downward at a lower end of the insertion rod; And the extruded material injected into the injection hole of the mold body moves downward through the inside of the mold body And an extrusion port which is screwed to a lower portion of the lower cover and into which an extrusion plate having an extrusion window inserted therein is replaceably inserted.

The upper copper plate has a pair of upper and lower movable holes vertically penetratingly formed on the inner circumferential surface so as to be symmetrical with each other and each lower end is coupled to the upper cover so as to be inserted into the upper and lower movable holes of the upper and lower copper plates, A pair of upper and lower adjustment bolts each having an opposite end extended upward and a plurality of upper and lower adjustment bolts each screwed to each of the upper and lower adjustment bolts to vertically move the upper and lower copper plates up and down, And further includes a vertical adjustment nut.

The lower cover includes a ring-shaped lower cover ring fixedly coupled to the lower portion of the metal body, and a lower portion of the ring-shaped lower cover ring fixedly coupled to the lower portion of the metal body. And a plurality of pushing bolts for pushing and fixing the upper circumferential surface of the work guide tube through the outer circumferential surfaces of the lower cover ring, respectively.

The extrusion port is screwed to a lower portion of the material guide pipe of the lower cover, and the extrusion plate is pressed and fixed to the lower end of the material guide pipe. The sectional shape of the extruded product is determined depending on the cross- .

In addition, when the extruded product is to be manufactured in a hollow tube shape, the cross-sectional shape of the extrusion window of the press-forming die is changed to a circular shape so as to match the outer diameter of the extruded product, And is adjusted in accordance with the inner diameter of the extruded product by interfering with the inside of the circular cross section of the extruded product while moving up and down.

When the extruded product is to be manufactured in a shape that does not have a hollow, the press plate is changed so as to match the sectional shape of the extruded product, and the upper and lower copper plates are raised so that the hollow- And the extruded product is extruded and manufactured in a cross-sectional shape of the extruded window of the press-proof so as not to interfere with the inside.

The extrusion die apparatus according to the present invention can continuously produce a hollow tube having various inner diameters and outer diameters by extruding an extruded material and extruded products having various shapes without hollows through a single die apparatus.

1 is a perspective view showing an embodiment of an extrusion die apparatus according to the present invention,
Figure 2 is an exploded perspective view of the embodiment of Figure 1,
FIGS. 3 and 4 are perspective views showing the operation of the upper copper plate of the embodiment of FIG. 1,
FIGS. 5 and 6 are perspective views showing a process of coupling the lower cover of the embodiment of FIG. 2,
FIGS. 7 and 8 are perspective views showing a process of joining an extrusion port and an upper and lower copper plate when an extruded product is manufactured in a hollow tube shape,
9 is a cross-sectional view taken along the line A-A 'in the embodiment of FIG. 1,
10 is a cross-sectional view taken along a line B-B 'in FIG. 8,
FIGS. 11 and 12 are perspective views showing the process of replacing the press plate and the operation of the upper and lower copper plates when an extruded product is to be manufactured in a shape having no hollow,
13 is a cross-sectional view taken along the line C-C 'of the embodiment of FIG.

Hereinafter, preferred embodiments of the extrusion die apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

The extrusion mold apparatus according to the present invention includes a mold body 100, an upper cover 200, an upper and lower copper plates 300, a lower cover 400, and an extrusion port 500 as shown in FIGS. . The mold body 100 is formed with an injection hole 110 and the upper cover 200 is formed with an insertion guide tube 210. The upper and lower copper plates 300 are inserted into the insertion rod 310, 320, up and down movement holes 330, up and down adjustment bolts 340, and up and down adjustment nuts 350. The lower cover 400 includes a lower cover 410, a material guide tube 420 and a pressing bolt 430. The extruding tool 500 includes a pressing plate 510 having an extrusion window 511, .

As shown in FIGS. 1 and 2, the mold body 100 is in the form of a vertically opened cylinder, and an injection hole 110 through which the extruded material M is injected is formed through the outer peripheral surface on one side. For example, a screw is mounted in the cylinder through a material supply means (not shown) to push the extruded material M supplied to the cylinder as the screw rotates, and the extruded material M Is injected into the mold body 100 through the injection hole 110 of the mold body 100.

1 to 4, the upper cover 200 is fixedly coupled to the upper portion of the mold body 100, and a hollow insertion guide tube 210 inserted into the mold body 100 is coupled downward Respectively. That is, the upper cover 200 closes the opened top of the mold body 100, and a hollow insertion guide tube 210 protrudes from the top cover 200 and is inserted into the mold body 100 . The hollow insertion guide tube 210 formed in the upper cover 200 is inserted by the insertion rod 310 of the upper and lower copper plates 300 to be described later and serves as a guide when the insertion rod 310 is moved up and down.

The upper copper plate 300 is installed above the upper cover 200 so as to be movable up and down with reference to the upper cover 200 as shown in FIGS. 1 to 4, A hollow insertion member 310 is formed to protrude downward through the pipe 210 and a conical hollow member 320 is coupled to the lower end of the insertion rod 310 such that the vertex is downward .

The upper and lower copper plates 300 are vertically penetrated through a pair of upward and downward movement holes 330 symmetrically with respect to the inner circumferential surface so that the upper and lower copper plates 300 can move up and down with respect to the upper cover 200, And moves up and down through the vertical adjustment bolt 340 and the vertical adjustment nut 350. That is, a pair of the vertically adjusting bolts 340 are coupled to the upper cover 200 so that the lower ends thereof are inserted into the upper and lower moving holes 330 of the upper and lower copper plates 300, respectively, Respectively. The upper and lower adjustment bolts 340 are screwed to each other to vertically move the upper and lower copper plates 300 up and down with respect to the upper and lower adjustment bolts 340. [ Move it while fixing it.

When the upper copper plate 300 is moved up and down with respect to the upper cover 200 as described above, the insertion rod 310 and the hollow forming member 320 of the upper copper plate 300 are also inserted into the upper cover 200, And moves up and down along the guide pipe 210. The hollow forming member 320 may adjust the inner diameter of the hollow tube when the extruded product P of the hollow tube is manufactured according to the sectional shape of the extrusion window 511 engraved in the press- .

The lower cover 400 is fixedly coupled to the lower portion of the mold body 100 as shown in FIGS. 1, 2, 5 and 6, and the lower cover 400 is fixedly coupled to the injection hole 110 of the mold body 100, (M) moves downward through the inside of the mold body (100). The lower cover 400 may include a lower cover ring 410, a material guide pipe 420, and a compression bolt 430.

That is, the lower cover ring 410 is fixedly coupled to the lower portion of the mold body 100 in a ring shape. In addition, the material guide pipe 420 is annular in shape and inserted into the inner side of the lower cover ring 410 and is hooked, and a lower portion formed with threads on the outer circumferential surface protrudes below the lower cover ring 410. At this time, a plurality of pressing bolts 430 are provided so as to penetrate the outer circumferential surface of the lower cover ring 410, respectively, to press and fix the upper circumferential surface of the work guide pipe 420.

The lower cover 400 having the above-described structure may be configured to separately detach the material guide tube 420 while separately forming the lower cover ring 410 and the material guide pipe 420. If necessary, the material guide pipe 420 may be replaced To change the pressure of the extruded material (M) to be injected or to change the characteristics of the extruded product (P) in conjunction with the extrusion port (500) to be described later. Particularly, a screw thread is formed in the lower part of the material guide pipe 420 so that the push-out port 500 inserted into the push-out port 500 can be easily replaced To be able to do so.

As shown in FIGS. 1, 2 and 7 to 13, the push-out port 500 is screwed to the lower portion of the lower cover 400, and the push-out plate 510 having the push- . More specifically, the extrusion port 500 is screwed to a lower portion of the material guide pipe 420 of the lower cover 400. The presser plate 510 is pressed and fixed to the lower end of the material guide pipe 420, The cross-sectional shape of the extruded product P is determined according to the cross-sectional shape of the extrusion window 511 of the compression-molding 510.

For example, when the extruded product P is to be manufactured in the form of a hollow tube as shown in FIGS. 7 to 10, the extrusion window 511 of the pressure- The hollow molding member 320 moves up and down together with the upward and downward movement of the upper copper plate 300 to interfere with the inside of the circular cross section of the extrusion window 511, ). That is, it is possible to replace the press-forming plate 510 with the extrusion window 511 having a circular cross section having the same diameter as the outer diameter of the hollow tube-shaped extruded product P to be manufactured, When the upper and lower copper plates 300 are moved up and down to fit the inner diameter of the extruded product P, the hollow forming member 320 enters and interferes with the circular cross-section of the extrusion window 511, ) Can be adjusted.

On the other hand, when the extruded product P is to be manufactured in a shape having no hollow as shown in FIGS. 11 to 13, the press-fitting 510 is changed to fit the sectional shape of the extruded product P Sectional shape of the extrusion window 511 of the press-forming die 510 so as not to interfere with the inside of the cross-section of the extrusion window 511 while the hollow forming member 320 is lifted together by raising the upper copper plate 300 The extruded product P can be extruded and manufactured. That is, when the extruded product P to be manufactured does not have a hollow, the hollow forming member 320 must not interfere with the extrusion window 511, so that the upper and lower copper plates 300 are raised, The extruded material M is extruded as it is in the cross-sectional shape of the extruded window 511 to produce the extruded product P by extrusion.

As described above, the extrusion mold apparatus according to the present invention can continuously produce a hollow tube having various inner and outer diameters by extruding an extruded material, and an extruded product of various shapes having no hollow, through a single mold apparatus.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

M: Extruded material
P: Extruded product
100: mold body 110: injection hole
200: upper cover 210: insertion guide tube
300: Shanghai copper plate 310: Insertion rod
320: hollow forming member 330: up and down moving hole
340: Vertical adjustment bolt 350: Vertical adjustment nut
400: lower cover 410: lower coverring
420: material guide tube 430: compression bolt
500: extrusion port
510: Compression printing 511: Extrusion window

Claims

A mold body having a vertically opened cylindrical shape and formed with an injection hole through which an extruded material is injected inwardly on one outer circumferential surface,
An upper cover fixedly coupled to the upper portion of the mold body and having a hollow insertion guide tube protruded downward to be inserted into the mold body,
And an elongated insertion rod is formed to protrude downwardly through the insertion guide tube of the upper cover, and a vertex point is formed downward at the lower end of the insertion rod An upper copper plate joined to the hollow forming member in a conical shape so as to face the upper copper plate,
A lower cover fixed to the lower portion of the mold body and guiding the extruded material injected into the injection hole of the mold body to move downward through the inside of the mold body,
And an extrusion port which is screwed to a lower portion of the lower cover and into which an extrusion plate having an extrusion window inserted therein is replaceably inserted.

The method according to claim 1,
The upper copper plate,
A pair of upward and downward movement holes are formed in the inner circumferential surface so as to be symmetrical with each other,
A pair of upper and lower adjustment bolts each having a lower end coupled to the upper cover to be inserted into each of the upper and lower shift holes of the upper copper plate,
Further comprising a plurality of vertically adjusting nuts which are screwed to each of the up-and-down adjusting bolts to vertically move the upper and lower copper plates while vertically moving the upper and lower adjusting bolts.

The method according to claim 1,
Wherein the lower cover comprises:
A ring-shaped lower cover ring fixedly coupled to the lower portion of the mold body,
A material guide tube having an upper portion inserted into and engaged with an inner side of the lower cover ring and having a lower portion formed with threads on an outer peripheral surface thereof protruding downward from the lower cover ring,
And a plurality of pushing bolts for pushing and fixing the upper circumferential surface of the work guide pipe through the outer circumferential surfaces of the lower cover ring, respectively.

The method of claim 3,
In the extrusion port,
Wherein the extruded product is screwed to a lower portion of a work guide tube of the lower cover and the extruded plate is pressed and fixed to a lower end of the work guide tube, Mold device.

5. The method of claim 4,
Wherein when the extruded product is to be manufactured in the form of a hollow tube, the cross-sectional shape of the extrusion window of the press-forming die is changed to a circular shape so as to match the outer diameter of the extruded product, Wherein the extruded product is interfered with the inside of a circular cross section of the extrusion window to adjust the inner diameter of the extruded product.

6. The method of claim 5,
When the extruded product is to be manufactured in a shape that does not have a hollow shape, the pressure plate is changed so as to conform to the cross-sectional shape of the extruded product, and the upper and lower copper plates are raised so that the hollow- And the extruded product is extruded and manufactured in a cross-sectional shape of an extrusion window of the press-forming die so as not to interfere with the extrusion die.