KR101688643B1 - Multiple mold having a plurality of parting line - Google Patents

Abstract

The present invention relates to a fixing device including a fixed side mounting plate, a fixed side core, and a hot runner; A movable portion including a movable-side mounting plate and a movable-side core; A first intermediate layer which is in contact with the fixed-side core and presses the molten resin injected through the hot runner; And a second intermediate layer which is provided between the first intermediate layer and the moving part and presses the molten resin injected through the hot runner in contact with the first intermediate layer and the movable core, Between the first intermediate layer and the second intermediate layer, and between the second intermediate layer and the movable section, are formed through the hot runner by forming the first part line, the second part line and the third part line, which are opened and closed by the opening and closing device The molten resin is transferred and injection-molded in each of the first part, second part and third part.

Description

[0001] MULTIPLE MOLD HAVING A PLURALITY OF PARTING LINE [0002]

The present invention relates to multiple molds for injection molding.

More particularly, the present invention relates to a multi-mold having three to four parting lines in an injection molding machine, which can inject three or four products at the same time, thereby improving productivity and reducing manufacturing costs To a multiple mold having a plurality of parting lines capable of increasing production efficiency.

Generally, injection molding means a manufacturing process in which a cavity is formed in the cavity and a molten resin is injected into the cavity to produce a product having a predetermined shape, and is used to produce a large amount of products of the same type.

Examples of the injection-molded product include a kitchen container, a cellular phone case, and a household appliance case made of a synthetic resin material.

In order to manufacture such injection-molded products, two or more cores are combined with each other. The cores are combined to form a complete mold, and a molten resin is injected through a designed injection port to produce a product.

However, the process of manufacturing a product using a pair of cores is advantageous in manufacturing a large number of products having the same shape, but since only one product can be manufactured by one operation, the injection time required for manufacturing a large amount of products is increased .

Therefore, a multi-tool mold capable of injection molding by a single process has been developed.

As one of such multiple molds, Patent Document 10-1092636 discloses a multiple mold, an injection molding system including the same, an injection mold that can be a part of the multiple mold, and a hot mold system of an injection mold.

FIG. 1 is a cross-sectional view showing a cross section of a multiple mold in a conventional multiple mold, and includes a movable mold mounting block 11 and a first male mold block (FIG. 1) coupled to the movable mold mounting block 11 15); A stationary side mounting plate 21 provided opposite to the movable side mounting plate 11, a fixed side sprue bush 22 formed on the stationary mounting plate 21, (20) comprising a second male mold block (25) coupled to the second male mold block (25); And a first cavity mold (C1) interposed between the movable portion (10) and the fixing portion (20) and in which the first product is molded with the first male mold block (15) and a second cavity (C2) formed between the fixed mold and the second mold block (25) so as to form a second product therebetween, wherein the second mold block (31) 2 arm mold block 32 and an intermediate portion 30 including a first intermediate sprue bushing 41 connected to the first cavity C1 on the side of the first arm mold block 31 The first arm mold block 30 and the second arm mold block 30 are disposed so as to be openable and closable between the fixing portion 20 and the intermediate portion 30 and between the intermediate portion 30 and the movable portion 10, The movable side mounting plate 11 is coupled to the movable side sprue bushing 12 connected to the first cavity C1. The movable side mounting plate 31 and the second arm mold block 32 are separated from each other, Is formed, The movable side sprue bush 12 and the first intermediate side sprue bushing 41 are selectively connected to the first cavity C1.

Such a multi-metal mold provides a plurality of molds capable of molding a plurality of materials in one mold, so that products having different materials can be simultaneously injected, and furthermore, a structure capable of injecting two products in a single process .

However, in the conventional multiple molds, it is positive that two products are injected in a single process. However, productivity can not be significantly improved as compared with a conventional mold, and furthermore, a link having a gear shape or a rack and a pinion structure or a three- It is positive that the parting lines can be opened at the same time. However, the structures are required to be continuously repaired due to abrasion, and thus there is a problem that work time delay for maintenance and management cost increase.

Meanwhile, a special injection machine, that is, an expensive double injection machine, has been proposed as a structure capable of performing injection molding of several products at the same time in a single process. However, such a double injection machine is difficult to apply to a conventional injection machine (mold apparatus) There is a problem in that it is limited to increase the production efficiency by injection molding only one pair of products at a time.

Registered Patent Publication No. 10-1092636 (December 05, 2011)

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 multi-mold having three to four parting lines in one injection molding machine, Can be injected at the same time. Therefore, the productivity can be improved by 3 to 4 times compared to the conventional injection mold, thereby shortening the production time and reducing the manufacturing cost. Thus, .

Another object of the present invention is to provide an injection molding machine which can be applied to an existing injection molding machine and does not require a separate device and does not require any control conditions for controlling a mold, It is possible to provide a plurality of molds having a plurality of parting lines which can be easily used by any technician who can control an existing injection molding machine I have to.

According to an aspect of the present invention, there is provided a multiple mold having a plurality of parting lines according to the present invention includes a fixing part including a fixed side mounting plate, a fixed side core, and a hot runner; A movable portion including a movable-side mounting plate and a movable-side core; A first intermediate layer in contact with the stationary core to press the molten resin injected through the hot runner; And a second intermediate layer which is provided between the first intermediate layer and the movable part and presses the molten resin injected through the hot runner in contact with the first intermediate layer and the movable core, The first part line, the second part line and the third part line, which are opened and closed between the first intermediate layer and the second intermediate layer and between the second intermediate layer and the movable part, are formed, whereby the molten resin injected through the hot runner is transferred The present invention provides a multiple mold having a plurality of parting lines, which are injection-molded in each of a first part, a second part, and a third part.

The present invention provides a multi-mold having 3 to 4 parting lines in one injection molding machine, so that 3 to 4 products can be simultaneously injected in a single process, resulting in a productivity of 3 to 4 times that of the conventional injection mold Thereby shortening the time required for production and reducing manufacturing costs, thereby increasing the product production efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a multiple mold in a conventional multiple mold.
2 is a front side cross-sectional view of multiple molds having a plurality of parting lines in accordance with the present invention.
3 is a front side cross-sectional view showing a configuration of a hot runner in a multiple metal mold having a plurality of parting lines according to the present invention.
4 is a plan side cross-sectional view showing an example in which three hot runners are provided in a multiple metal mold having a plurality of parting lines according to the present invention.
5 is a plan side cross-sectional view illustrating an example in which four hot runners are provided in multiple molds having a plurality of parting lines according to the present invention.
FIG. 6 is a front sectional view showing a parting line opened in multiple molds having a plurality of parting lines according to the present invention.
7 is a front side sectional view showing an example for supporting an intermediate layer in a multiple metal mold having a plurality of parting lines according to the present invention.

Advantages and features of embodiments of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

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

Before describing multiple molds with multiple parting lines in accordance with the present invention, reference will now be made, by way of example, to the accompanying drawings in which: The expressions and predicates used herein in relation to terms such as "top,"" bottom, "" left, "" It is to be noted that the element does not indicate or imply that it should simply have a certain direction.

The present invention relates to a multiple mold having three to four parting lines in one injection molding machine, and it is possible to inject three or four products at the same time, thereby improving the productivity and reducing the production cost, To a plurality of parting lines capable of increasing the number of parting lines.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a plurality of parting lines having a plurality of parting lines according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a front cross-sectional view of a multiple mold having a plurality of parting lines according to the present invention, and FIG. 3 is a front side cross-sectional view illustrating a configuration of a hot runner in a multiple mold having a plurality of parting lines according to the present invention.

The mold having a plurality of parting lines according to the present invention has three parting lines so that three products can be simultaneously injected even by a single process. The mold 100 has the movable part 200, the first intermediate layer 300 and a second intermediate layer 400.

The fixing unit 100 is located on the upper side of the multiple mold according to the present invention and includes a fixed side mounting plate 110, a fixed side core 120, and a hot runner 130.

The fixed side mounting plate 110 is coupled to the fixed plate of the base injector.

The fixed side mounting plate 110 is provided with a separate sprue bush (not shown) on its outer side, and the sprue bushing is connected to a hot runner 130, which will be described later.

Here, the sprue bushing is used to inject the molten resin.

The fixed-side core 120 is provided on the lower side of the fixed-side mounting plate 110 and is configured to be in contact with the upper side of the first intermediate layer 300, which will be described later.

A first parting line P1 is formed between the stationary core 120 and the first intermediate layer 300 and a cavity is formed in the first parting line P1 so that a product can be manufactured.

Here, the cavity means a molding space in which a molten resin is supplied to manufacture a product.

The hot runner 130 is connected to a sprue bush provided inside the fixed side core 120 and provided outside the fixed side mounting plate 110 and includes a first hot runner 131, And the third hot runner 133 to transfer the molten resin to the first hot runner 131, the second hot runner 132, and the third hot runner 133.

That is, the hot runner 130 means a path through which the molten resin flows, and the injected molten resin is transferred to the first parting line P1, the second parting line P2 and the third parting line P3, .

The first hot runner 131 extends downward from the hot runner 130 and communicates with the lower side of the fixed core 120 through the fixed core 120.

The molten resin injected from the sprue bush provided outside the fixed side mounting plate 110 is transferred to the first parting line P1 through the first hot runner 131 through the hot runner 130 .

The second hot runner 132 extends downward from the hot runner 130. The second hot runner 132 passes through the fixed core 120 and the first intermediate layer 300 to be described below, .

The molten resin injected from the sprue bush provided outside the fixed side mounting plate 110 is transferred to the second hot runner 132 through the hot runner 130 and transferred to the second parting line P2 .

The third hot runner 133 extends downward from the hot runner 130. The third hot runner 133 passes through the fixed core 120, the first intermediate layer 300 and the second intermediate layer 400, 2 intermediate layer (400).

The molten resin injected from the sprue bush provided outside the fixed side mounting plate 110 is transferred to the third parting line P3 through the third hot runner 133 through the hot runner 130 .

The first hot runner 131, the second hot runner 132 and the third hot runner 133 are connected to the first parting line P1, the second parting line P2, And the third parting line P3, and the number of the parting lines is three, the first hot runner 131 is configured on the front side, the second hot runner 132 is configured on the lower side, (133) may be configured on the left side.

According to the design conditions, as shown in Fig. 5, the first parting line P1, the second parting line P2, the third parting line P3, and the fourth parting line, The first hot runner 131 is configured on the back side, the second hot runner 132 is configured on the front side, the third hot runner 133 is configured on the right side, and the fourth hot runner 130 may be configured on the left side.

At this time, the first hot runner 131, the second hot runner 132 and the third hot runner 133 are divided into a first parting line P1, a second parting line P2 and a third parting line P3 A manifold and a gate valve may be further provided so that the molten resin to be injected can be simultaneously injected.

The manifold performs the function of adjusting the flow rate of each runner in each runner composed of the first hot runner 131, the second hot runner 132 and the third hot runner 133 through which the molten resin flows, Is possible.

The gate valve has a structure for opening and closing the passages of the first hot runner 131, the second hot runner 132 and the third hot runner 133 through which the molten resin is fed.

Accordingly, the molten resin can be simultaneously injected by the manifold and the gate valve for each of the first parting line P1, the second parting line P2, and the third parting line P3.

The movable part 200 is located on the lower side of the multiple mold according to the present invention and is installed to face the fixed part 100 and includes a movable side mounting plate 210, a movable side core 220, a plate 230, A spin pin 240, and a return pin 250.

The movable side mounting plate 210 is engaged with the movable plate of the gasket injector.

The movable-side mounting plate 210 may be constructed in the same manner as the movable portion structure in the conventional single mold structure. That is, it can be constructed in the same manner as a structure which is operated in an injection machine in the same manner as a general single mold.

The movable core 220 is disposed on the upper side of the movable side mounting plate 210 and contacts the lower side of the second intermediate layer 400 to be described later. The movable core 220 includes a plate 230, a pin 240, and a return pin 250).

A third parting line P3 is formed between the movable core 220 and the second intermediate layer 400 and a cavity is formed in the third parting line P3 so that a product can be manufactured.

The plate 230 is provided inside the movable core 220 to move up and down, and performs a function of releasing the product manufactured in the cavity formed in the third parting line P3.

According to the design conditions, a gas spring (not shown in the figure) for controlling the up-and-down movement of the plate 230 may further be provided. Needless to say, the plate 230 can be raised or lowered by the operation of the gas spring.

The slide pin 240 protrudes upward from the plate 230 and protrudes upward from the movable core 220 by up and down movement of the plate 230.

The return pin 250 is provided on the upper side of the plate 230 so that the plate 230 is lifted to push the product manufactured in the cavity formed on the third parting line P3, As shown in FIG.

The return pin 250 may further include an elastic member.

According to this configuration, the product formed by injection molding after the molten resin is supplied to the cavity formed in the third parting line P3 through the third hot runner 133 is passed through the plate 230 including the return pin 250, At the same time, the upper end of the spin pin 240 protrudes to the upper side of the movable core 220, so that the product injected from the third parting line P3 can be pushed out.

At this time, the return pin 250 serves to guide the up and down movement of the mille pin 240, and the mille plate 230 is lifted and pressed together, ) To the lower side.

The first intermediate layer 300 is provided between the fixing portion 100 and a second intermediate layer 400 to be described later and includes a gas spring fixing plate 310, a gas spring 320, a first plate 330, A first return pin 350, a second plate 360, a second milten pin 370, and a second return pin 380. The first return pin 350,

The gas spring fixing plate 310 is provided inside the first intermediate layer 300 to support a gas spring 320, which will be described later, with reference to the accompanying drawings.

A plurality of gas springs 320 are provided on the upper and lower sides of the gas spring fixing plate 310 to support the first and second plates 330 and 360, respectively.

Accordingly, when the gas spring 320 is operated, the first plate 330 is moved upward and the second plate 360 is moved downward.

Depending on the design conditions, additional limit software may be further provided to sense the upward and downward movement of the first and second plates 330 and 360, which are moved up and down by the gas spring 320 .

The limit software can be configured to be interlocked with the control unit of the injector to control the operation of the gas spring 320 so as to control the upward and downward movement positions of the first plate 330 and the second plate 360 .

The first plate 330 is disposed inside the first intermediate layer 300 and is positioned above the gas spring fixing plate 310. The first plate 330 is lifted by the action of the gas spring 320, The first lower plate 332, and the first lower plate 333, which are lowered by the lower plate 350. The first upper plate 331, the first lower plate 332,

The first contact plate 331 is provided on the upper side of the first plate 330 and contacts the lower side of the first return pin 350 to be described later, ) Of the control signal.

The first lower plate 332 is provided on the lower side of the first plate 330 and functions to raise the first plate 330 by the operation of the gas spring 320 in contact with the gas spring 320 do.

The first stepped portion 333 is formed between the first dense plate 331 and the first dense plate 332 and supports the first milipin 340 to be described later, 1 < / RTI > milipin 340 is raised or lowered.

The first miltel pin 340 is installed on the first plate 330 and protrudes to the upper side of the first intermediate layer 300 by the action of the gas spring 320, and a step 341 is formed.

When the first parting line P1 is opened by the size of the first stepped portion 333, the first milling pin 340 operates to form the first parting line 331, P1) to take out the injection molded product.

The first return pin 350 is provided on the upper side of the first counter plate 331 and the first turn plate 330 is raised so that the first turn pin 340 is formed in the cavity formed in the first parting line P1 And push down the first push plate 330 after pushing the product.

The first return pin 350 may further include an elastic member.

According to this configuration, when the injection molded product is taken out from the first parting line P1, the gap between the fixed core 120 and the first intermediate layer 300 is opened, The plate 331, the first bottom plate 332 and the first return pin 350 are simultaneously moved toward the fixed core 120. At this time, the first bottom plate 340 is not moved, The bottom surface of the first stepped portion 333 formed between the first counter plate 331 and the first bottom plate 332 is formed in the first milipin 340 while the first stepped portion 332 is moved toward the fixed core 120. [ By pressing the bottom surface of the step 341, the first milipin 340 protrudes toward the fixed-side core 320 and pushes out the injection-molded product from the first parting line P1.

The time for the first milipin 340 to move to the fixed core 120 is delayed by the space of the first step 333 formed between the first countersunk plate 331 and the first bottom plate 332 do.

When the first parting line P1 is opened and the first milipin 340 is directly projected toward the fixed-side core 120, the product injection-molded in the first parting line P1 passes through the fixed-side core 120 Thereby preventing a problem that may adversely affect the product, and may delay the time for moving the first milipin 340 to the fixed-side core 120 by the space of the first stepped portion 333 , It is possible to produce stable products.

The second plate 360 is disposed inside the first intermediate layer 300 and is positioned below the gas spring fixing plate 310 and is opposed to the first plate 330. The operation of the gas spring 320 And is raised by a second return pin 380, which will be described later, and includes a second countersunk plate 361, a second bottom plate 362, and a second step 363.

The second countersunk plate 361 is provided below the second plate 360 and comes into contact with the upper side of the second return pin 380 to be described later, ).

The second lower plate 362 is provided on the upper side of the second plate 360 and functions to lower the second plate 360 by the operation of the gas spring 320 in contact with the gas spring 320 do.

The second stepped portion 363 is formed between the second counter plate 361 and the second bottom plate 362 as shown in the accompanying drawings and supports the second miltel pin 370, 2 < / RTI > mil pin 370 is raised or lowered.

The second miltel pin 370 is installed on the second plate 360 and protrudes to the lower side of the first intermediate layer 300 by the action of the gas spring 320, and a step 371 is formed.

When the second parting line P2 is opened by the size of the second stepped portion 363, the second tilting pin 370 is operated to move the second parting line 370 to the second parting line 363, P2) so that the injection molded product can be taken out.

The second return pin 380 is provided on the lower side of the second countersunk plate 361 and the second pin 360 is lowered so that the second pin 370 is formed in the cavity formed on the second parting line P2. And pushing the product and raising the second plate 360.

At this time, the second return pin 380 may be further provided with an elastic member.

The structure of the second plate 360, the second millepin 370 and the second return pin 380 is different from that of the first plate 330, the first millepin 340, and the first return pin 350 But they are configured to face each other as shown in the accompanying drawings and serve as the same functions.

When the product is injection-molded in the cavities formed in the first parting line P1 and the second parting line P2, the gas spring 320 is operated so that the first and second milling pins 340, The first intermediate layer 300 protrudes upward and downward, respectively, so that two products can be taken out to both sides of the first intermediate layer 300 at once.

The second intermediate layer 400 is provided between the movable side mounting plate 210 and the first intermediate layer 300 and includes a first intermediate layer 300 and a second parting line P2 formed therebetween, So that the third parting line P3 is formed between the mounting plate 210 and the mounting plate 210. [

Hereinafter, an opening / closing apparatus 500 for opening and closing a parting line for injection molding in a parting line in the multiple metal mold having the above structure will be described with reference to FIG.

FIG. 6 is a front sectional view showing a parting line opened in multiple molds having a plurality of parting lines according to the present invention.

When the first parting line P1, the second parting line P2 and the third parting line P3 are opened as shown in Fig. 6, the opening and closing apparatus 500 is arranged so that the first parting line P1, the second parting line P2, The third parting line P3, the second parting line P2 and the first parting line P1 are sequentially opened while the size of the third parting line P3 and the third parting line P3 are opened, And includes a first fixing bar 510, a second fixing bar 520, a third fixing bar 530, a first guide pin 540 and a second guide pin 550 so as to be able to take out the product. .

At this time, the opening of the first parting line P1, the second parting line P2 and the third parting line P3 can be configured to be opened by the same constitution and method as those of the conventional injector.

That is, the movable part 200 of the present invention can be constructed in the same manner as the construction and method of opening the moving part in the existing injection molding machine. If the moving part 200 of the multiple mold according to the present invention is transferred through the injection molding machine, The second parting line P 2 and the first parting line P 1 are sequentially opened so that the movable part 200 is transferred to open the third parting line P 3, The second intermediate layer 400 is transferred and the second parting line P2 is opened and the second fixing rod 520 is transferred to the first intermediate layer 300 The first intermediate layer 300 is transferred and the first parting line P1 is opened so that the first fixing rod 510 contacts the fixing part 100 The third parting line P3, the second parting line P2 and the first parting line P1 sequentially move in the direction of the first parting line P1, It can be opened.

The first fixed bar 510 is connected to the fixed core 120 at the upper side and connected to the first intermediate layer 300 at the lower side to form a first fixed bar 510 formed between the fixed core 120 and the first intermediate layer 300, And performs a function of opening and closing the parting line P1.

The second fixed rods 520 are connected to the first intermediate layer 300 on the upper side and connected to the second intermediate layer 400 on the lower side to form the second fixed rods 520, And performs a function of opening and closing the parting line P2.

The third fixed bar 530 is connected to the second intermediate layer 400 on the upper side and connected to the movable side core 220 on the lower side to form a third fixed rod 530 formed between the second intermediate layer 400 and the movable side core 220. And performs a function of opening and closing the parting line P3.

As shown in FIG. 6, the first fixing bar 510, the second fixing bar 520, and the third fixing bar 530 are formed in an 'I' shape, and protrude upward and downward, respectively, (Not shown) are formed on the first fixing bar 510. The jaws formed on the first fixing bar 510 are formed to engage with the fixing portion 100 and the jaw supporting portion (not shown) formed on the first intermediate layer 300, The jaws formed on the second fixing bar 520 are formed to engage with the first intermediate layer 300 and the jaw support portions formed on the second intermediate layer 400 respectively and the jaws formed on the third fixing portion 530 are formed on the second intermediate layer 400 and the movable part 200, respectively.

When the product is injection molded in the first parting line P1, the second parting line P2 and the third parting line P3, the movable part 200 is transferred to form the first parting line P1, The line P2 and the third parting line P3 are opened to allow the product to be taken out from each parting line.

It is needless to say that a plurality of the first fixing rods 510, the second fixing rods 520, and the third fixing rods 530 may be provided to maintain a uniform tying force.

The first guide pin 540 is fixed to the stationary core 120 and functions to support the first intermediate layer 300, the second intermediate layer 400 and the moving core 220, When the first parting line P1, the second parting line P2 and the third parting line P3 are opened by the rod 510, the second fixing rod 520 and the third fixing rod 530, .

The second guide pin 550 is fixed to the movable core 220 and functions to support the fixed core 120, the first intermediate layer 300 and the second intermediate layer 400, When the first parting line P1, the second parting line P2 and the third parting line P3 are opened by the fixing bar 510, the second fixing bar 520 and the third fixing bar 530, Prevent sagging.

Hereinafter, an auxiliary support 600 for securely supporting the first intermediate layer 300 and the second intermediate layer 400 in the multiple metal mold having the above structure will be described with reference to FIG.

7 is a front side sectional view showing an example for supporting an intermediate layer in a multiple metal mold having a plurality of parting lines according to the present invention.

The auxiliary support 600 is for supporting the first intermediate layer 300 and the second intermediate layer 400 and includes an intermediate layer auxiliary support 610 and a guide rail 620.

On the other hand, when the multiple molds are installed in the base molding machine, the stationary side mounting plate 110 and the movable side mounting plate 210 can be installed so as to be perpendicular to the paper surface, as shown in FIG.

At this time, the fixed-side core 120 and the movable-side core 220 are firmly fixed to the fixed-side mounting plate 110 and the movable-side mounting plate 210, respectively. However, (400) may be weakened by the load.

Thus, by supporting the first intermediate layer 300 and the second intermediate layer 400 through the separate auxiliary support 600, deflection can be prevented in advance.

The intermediate layer auxiliary supports 610 are provided in pairs and are respectively provided on the side surfaces of the first intermediate layer 300 and the second intermediate layer 400 to function as a supporting member for supporting the first intermediate layer 300 and the second intermediate layer 400 .

Needless to say, such an intermediate layer auxiliary support 610 may be constituted by a hydraulic cylinder.

Accordingly, the length of the intermediate layer auxiliary support 610 can be adjusted by the hydraulic pressure so that deflection does not occur even when the first intermediate layer 300 and the second intermediate layer 400 are continuously used.

One side of the guide rail 620 contacts the ground and the other side supports a pair of the intermediate layer auxiliary supports 610 so that the intermediate layer auxiliary supports 610 can be slidably moved.

For example, the other side of the intermediate layer auxiliary support 610, which is in contact with the guide rail 620, may be further provided with another wheel so as to be easily slidable from the guide rail 620.

Accordingly, when the first parting line P1, the second parting line P2 and the third parting line P3 are opened, the intermediate layer auxiliary support 610 is also supported by the guide rail 620 and slidably moved, 1 sagging of the intermediate layer 300 and the second intermediate layer 400 can be prevented.

Depending on the design conditions, multiple molds having a plurality of parting lines according to the present invention can be configured to form four parting lines.

A separate intermediate layer is further provided between the fixing part 100 and the first intermediate layer 300 and the movable part 200 is provided at a position where the fixing part 100 is provided so that a total of four parting lines are formed Lt; / RTI > In addition, referring to FIG. 5, since hot runners are provided in each of the parting lines, four products can be simultaneously injected in one step, and productivity can be improved.

Depending on the design conditions, the configuration of the gas spring 320 may be composed of a hydraulic cylinder.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It can be seen that branch substitution, modification and modification are possible.

P1: first parting line P2: second parting line
P3: third parting line 100:
110: fixed side mounting plate 120: fixed side core
130: Hot runner 131: First hot runner
132: second hot runner 133: third hot runner
200: moving part 210: movable side mounting plate
220: movable core 230:
240: Milfin 250: Return pin
300: first intermediate layer 310: gas spring fixing plate
320: gas spring 330: first plate
331: first crush plate 332: first bottom plate
333: first step 340:
341, 371: a step 350: a first return pin
360: second plate 361: second plate
362: second bottom plate 363: second step
370: second milfin 380: second return pin
400: second intermediate layer 500: opening / closing device
510: first fixing rod 520: second fixing rod
530: third fixing rod 540: first guide pin
550: second guide pin 600: auxiliary support
610: Middle layer auxiliary support 620: Guide rail

Claims (6)

A fixing portion 100 including a fixed side mounting plate 110, a fixed side core 120, and a hot runner 130;
A movable part 200 including a movable side mounting plate 210 and a movable side core 220;
A first intermediate layer 300 contacting with the fixed-side core 120 and pressing the molten resin injected through the hot runner 130;
The second intermediate layer 300 and the movable core 220 are disposed between the first intermediate layer 300 and the movable part 200 and are in contact with the first intermediate layer 300 and the movable core 220 to press the molten resin injected through the hot runner 130. And an intermediate layer 400,
The opening and closing device 500 is provided between the fixing part 100 and the first intermediate layer 300 and between the first intermediate layer 300 and the second intermediate layer 400 and between the second intermediate layer 400 and the moving part 200. [ The molten resin injected through the hot runner 130 is transferred to the first parting line P1 (P1), the second parting line P2 (P2) and the third parting line P3 ), The second parting line (P2) and the third parting line (P3), respectively,
The movable part 200 includes: a plate 230 installed in the movable core 220 to move up and down; Is protruded to the outside of the plate 230 and is protruded to the third parting line P3 by the upward movement of the plate 230 to push the injection molded product from the third parting line P3 (240) for releasing it; And a return pin (250) for pushing the injection molded product from the third parting line (P3) and lowering the push plate (230)
The first intermediate layer 300 may include: a gas spring fixing plate 310 provided in the first intermediate layer 300; A gas spring 320 having a plurality of gas spring fixing plates 310 and varying lengths of the gas spring fixing plates 310 from the upper side to the lower side; A first plate 330 positioned above the gas spring fixing plate 310 and raised by the operation of the gas spring 320; The first parting line P1 protrudes outward from the first parting plate 330 and protrudes from the first parting line P1 by the elevation of the first parting plate 330, A first millepin 340 pushing and releasing the first millepin 340; A first return pin 350 for pushing the injection molded product from the first parting line P1 and then lowering the first push plate 330; A second plate 360 located below the gas spring fixing plate 310 and lowered by the action of the gas spring 320; The second parting line P2 protrudes outward from the second parting plate 360 and is protruded to the second parting line P2 by the descent of the second parting plate 360, (370) for pushing and releasing the second mili pin (370); And a second return pin 380 for pushing the injection molded product from the second parting line P2 and then raising the second push plate 360. [ A multiple mold having a plurality of parting lines.

delete The method according to claim 1,
The first parting plate 330 and the first parting plate 330 are simultaneously moved up and down so that the first parting line P1, the second parting line P2, And the injection molded product in the line (P3) is taken out at the same time.
The method according to claim 1,
The opening / closing device 500
And a first parting line P1 formed between the stationary core 120 and the first intermediate layer 300 to open and close the first parting line P1, A fixing rod 510;
The upper part is connected to the first intermediate layer 300 and the lower part is connected to the second intermediate layer 400. The second parting line P2 formed between the first intermediate layer 300 and the second intermediate layer 400 is opened / A second fixing rod 520 for fixing the second fixing bar 520; And
The upper part is connected to the second intermediate layer 400 and the lower part is connected to the movable core 220. The third parting line P3 formed between the second intermediate layer 400 and the movable core 220 is opened / And a third fixed bar (530) for providing a plurality of parting lines.
The method according to claim 1,
And an auxiliary support 600 supporting the first intermediate layer 300 and the second intermediate layer 400,
The auxiliary support (600)
An intermediate layer auxiliary support 610 provided on side surfaces of the first intermediate layer 300 and the second intermediate layer 400 to prevent deflection of the first intermediate layer 300 and the second intermediate layer 400; And
And a guide rail 620 having one side contacting the ground and the other side contacting and supporting the intermediate layer auxiliary support 610,
And the intermediate layer auxiliary support (610) is configured to be slidable from the guide rail (620).
The method according to claim 1,
An intermediate layer is further provided between the fixing portion 100 and the first intermediate layer 300,
The fixing part 100 is configured to be opposite to the movable part 200,
The distance between the fixing part 100 and the middle layer, between the middle layer and the first intermediate layer 300, between the first intermediate layer 300 and the second intermediate layer 400 and between the second intermediate layer 400 and the moving part 200 The first parting line P1, the second parting line P2 and the third parting line P3 which are the fourth parts are formed so that the molten resin injected through the hot runner 130 is transferred, Wherein the plurality of parting lines are injection molded into the first parting line (P1), the second parting line (P2) and the third parting line (P3), respectively.

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