KR100945848B1 - The apparatus for manufacturing and method for catapulting and molding with inserted cloth - Google Patents

Abstract

Multi-injection molding apparatus is inserted into the skin material according to the present invention, the lower fixed mold forming the inner frame of the molding product is installed, the lower mold portion is provided with an injection nozzle for injecting the resin into the lower fixed mold; Skin material adsorption portion consisting of a plurality of air holes to penetrate the inner upper portion of the lower fixed mold to form a vacuum pressure on the surface of the mold; An interruption mold part formed of a separate sliding mold formed by a pair of sliding and opening or closing from the upper side of the lower mold part to the left and right sides, and a pair of closed sliding molds matching from an upper side of the lower fixing mold in a closed state; A skin material heating part installed on an upper surface of the separate sliding mold and generating heat; And the upper insert mold is installed at the upper side of the interruption mold part in a state capable of raising and lowering, and the upper insert mold is lowered while the separate sliding mold is opened, and the skin material fixed to the bottom surface is preheated by the skin heating part. It includes a top mold to be pressed to the outer surface of the primary molded article.

According to the present invention, the skin material is preheated, and the skin material is adsorbed to the lower fixing mold by using the skin material adsorption portion, whereby the skin material is adhered without lifting.

Insert, Insert Injection Molding, Preheat, Adsorption

Description

Multi-injection molding apparatus in which the skin material is inserted and the injection molding method using the same {The apparatus for manufacturing and method for catapulting and molding with inserted cloth}

The present invention is an injection molding of a large product using a single injection molding device and at the same time the skin material to be bonded to the surface material (leather, artificial leather, nonwoven fabric, cloth, synthetic resin sheet and film, etc.) is inserted multiple An injection molding apparatus and an injection molding method using the same.

In general, molded products manufactured by injection molding as the skin material is inserted include door trims, filler trims, trunk mats, package trims and headliners, which are automotive interior materials. Commercially available interior materials can be said that the material and configuration are different from each other.

In other words, it is possible to use interior materials that are injection-molded only with synthetic resin, or interior materials that partially attach a soft skin material (cloth) to the synthetic resin surface, and other car models may adhere the skin material (cloth) to the entire surface of the substrate. It is also possible to use the trimmed edges together or to bond the high-quality skin to the surface of synthetic resin for better touch, and then wrap the edge of the skin to the inner surface of the base material.

Looking at the general manufacturing method of automotive interior materials, the method of attaching the skin material after the injection molding of the automotive interior material is a method of manually attaching the skin material to the outside of the automotive interior material injection-molded by the adhesive, and the first injection molding Later, there is a method of laminating the skin material on the surface of the molding and then injection molding again, and a method of manufacturing the car interior material having the skin material attached at the same time as the injection by embedding the skin material, but in the first case, it is uneconomical by hand. In the second case, the quality is good, but there is the inconvenience of having to injection molding twice,

In the third case, the automobile interior material molding and the skin material bonding are performed at the same time, so that the productivity is good, but when the skin surface material of the skin material is a woven or non-woven fabric, the interior material having a lot of angled step parts in the product has a high press pressure. When pressed into the upper mold, there is a problem that the injection liquid is seen on the surface of the skin due to the high pressure has been a lot of research to solve this problem.

For example, in the Republic of Korea Patent Publication No. 10-0334118, after performing the first process of injection molding the substrate with a pair of upper and lower molds, the injection heat on the injection-molded substrate significantly remaining state When the upper mold is opened and the skin material is supplied and bonded, the edge side of the base material is partially pushed down and the thickness is corrected so that the foam layer of the skin material is adhered without being damaged. A method of molding a car interior material and a molding apparatus thereof, which are manufactured by dividing the edge of the skin material on the inner surface of the base material from the product that needs to be wrapped around the bottom surface of the base material and curing it by hardening the same, are described.

In addition, the Republic of Korea Patent Publication No. 10-0329428 A release pattern is applied to the inner surface of the first mold or the second mold, the surface pattern on which the pattern for surface processing of the synthetic resin molding is formed on the release agent layer Placing the member, sealing the first or second mold on which the surface pattern member is placed, and injecting a synthetic support material to mold the synthetic resin molding; and the surface pattern member bonded to the surface of the molded synthetic resin molding. And separating the synthetic resin molding from the synthetic resin molding, and applying an adhesive or a release agent to the other surface of the surface pattern member in contact with the release agent layer so that the surface pattern member is attached to or separated from the surface of the synthetic resin molding. Surface pattern of the synthetic resin molding in which the pattern of the member is expressed on the surface of the synthetic resin molding The forming method is described.

In addition, the Republic of Korea Patent Publication No. 10-0164016 and the decorative pattern sheet is sandwiched between a pair of the mold formed with a hole and the molding frame formed with an injection hole facing each other, and the decorative pattern sheet is heated and heated by a heating apparatus. To soften, to bring the decorative pattern sheet into tight contact with the cavity surface of the mold based on the pressure difference generated by the exhaust of the mold through the hole, and to form the molten resin into a patterned product on the basis of the decorative pattern sheet. A heating apparatus is provided for use in a method of simultaneously patterning injection molding which is injected into a mold through an injection hole, wherein the heating apparatus heats the decorative pattern sheet by the heating body and the heating body to supply heat to the decorative pattern sheet. And a heating position facing the decorative pattern sheet for softening, and the heating body is formed in a pair of Injection molding comprising heating element moving means for moving the heating element in a positional relationship in which the heating surfaces of the heating elements are not parallel to each other between the heating position and the non-intensity position between non-intensity positions which are moved away from the space between them. And an apparatus and method for forming a pattern at the same time are described.

In addition, the Republic of Korea Patent Publication No. 10-0226301 is a step of supplying a skin material between a pair of mold, the skin material holding frame which is movable in a direction perpendicular to the mold blocking direction and the skin material which is movable in the mold blocking direction. Holding the skin material between the support frame, supplying a predetermined thermoplastic melt, and closing the mold to form a multi-layer molded article, at least one movable movable in the front and rear directions of the mold closing direction A member is provided around the mold surface to retreat in the mold closing direction after the supply of the resin melt and at least one ejector is ejected onto the skin holding frame to fold the edge of the skin toward the center of the mold, and the movable member Method of manufacturing a multi-layered molded product which proceeds to the mold surface and folds and forms the edge of the skin material to the rear of the resin body. It is described.

In addition, the Republic of Korea Patent Publication No. 10-0131885, the fabric skin material is supplied between the two molding dies before molding, and the edge of the fabric skin material is fixed, and then formed on one side of the fabric skin material A method for manufacturing automotive interior parts is described, which comprises a process of supplying a resin material in a molten state to a cavity, completely closing the two molding dies, and compressing and cooling the resin material and the fabric skin material integrally. have.

And, Korean Laid-Open Patent Publication No. 2001-0073714 is a variable lifting type of the upper and lower molds and the auxiliary mold for forming the side edges of the substrate on the upper mold and the mold surface is limited to the size capable of molding the planar portion of the substrate It describes a molding method and a molding apparatus of the automotive interior material that is installed in the injection molding process of the substrate and the work is carried out with the gap is corrected during the bonding process of the skin material.

In addition, Korean Laid-Open Patent Publication No. 2001-0104019 discloses a pair of lower molds having recesses formed on the molding surface for forming ribs of a predetermined thickness on the bottom of the substrate, and a pair of lower recesses separated by a boundary line. Inserts for forming a rim insert groove of the skin material on the rib portion while being protruded variably by a cylinder in the molding surface between the first and second molds, and the twelfth mold. An apparatus and a joining method for a base material for automobile interiors and a skin material composed of a cylinder for elevating the rod and the insert rod and a cylinder for elevating the first upper mold separately from the second upper mold.

In addition, the Korean Patent Application Publication No. 2003-0004885 discloses that after the step of spraying water on the surface of the skin material before the skin material input step, the skin material is added, and moisture is blocked by the injection heat, and the pressing bonding process and cooling are performed. A high pressure injection molding method for performing the process is described.

However, these conventional techniques are complicated in the process, it is difficult to adhere the skin material to a certain shape on the surface of the synthetic resin formed of the skin material produced by a conventional injection method, even if the skin formed on the surface of the synthetic resin Wrinkles are formed on the skin layer of the ash, or the embossing is generated to reduce the quality, it is difficult to make the thickness of the resin layer constant during the pressing process, and there has been a problem that the skin material is easily detached after a certain time.

An object of the present invention for solving the above problems of the prior art is the injection molding as a single injection molding apparatus and at the same time the skin material (leather, artificial leather, nonwoven fabric, skin material, synthetic resin sheet and film, etc.) The present invention provides a multi-injection molding apparatus into which an outer skin material to be adhered to is inserted, and an injection molding method using the same.

Another object of the present invention is to provide a multi-injection molding apparatus in which the skin material is inserted to improve the moldability and adhesion to the primary molded product as the skin material is secondary molded in a preheated state, and an injection molding method using the same.

Another object of the present invention is to form a skin material adsorption portion in the lower fixing mold, and the skin material is adsorbed toward the lower fixing mold during the second molding, so that the skin material does not lift even when the end of the primary molded product is inclined or curved inward. To provide a multi-injection molding apparatus is inserted into the skin material and an injection molding method using the same.

In order to achieve the above object, the multi-injection molding apparatus in which the skin material is inserted according to the present invention is provided with a lower fixing mold forming an inner frame of a molding product, and an injection nozzle for injecting resin into the lower fixing mold is provided. The lower mold portion;

Skin material adsorption portion consisting of a plurality of air holes to penetrate the inner upper portion of the lower fixed mold to form a vacuum pressure on the surface of the mold;

An interruption mold part formed of a separate sliding mold formed by a pair of sliding and opening or closing from the upper side of the lower mold part to the left and right sides, and a pair of closed sliding molds matching from an upper side of the lower fixing mold in a closed state;

A skin material heating part installed on an upper surface of the separate sliding mold and generating heat; And

The upper insert mold is installed in a state where the upper insert mold can be lowered and lowered on the upper side of the mold, and the upper insert mold is lowered in a state in which the separate sliding mold is opened, and the skin material fixed to the bottom surface is preheated by the skin heating unit. It includes a top mold to be pressed to the outer surface of the vehicle molded article.

And, the lower mold portion, the lower mold support for forming a base supported on the bottom;

A lower mold side support portion installed around a side of the lower mold support;

A lower mold fixing part spaced apart from the lower mold support on the lower mold side support part by a predetermined distance;

A lower fixing mold mounted at an upper center of the lower mold fixing part to form an inner frame of a molding product;

An injection nozzle which penetrates into the center of the lower fixing mold and injects resin into the mold;

A plurality of mil pins that are pulled up and down through the inner upper portion of the lower fixing mold to push the molded product upward; And

The lower part of the plurality of mil pins are fixedly installed and installed in a state capable of lifting up and down between the lower mold support and the lower mold fixing part.

At this time, it is preferable that the air hole of the skin material adsorption portion is formed around the edge and the end of the lower fixing mold.

In addition, a plurality of buffer parts may be formed on the bottom surface of the separate sliding mold to cushion shocks when matching with the lower mold part.

In addition, a sliding guide groove for guiding the sliding movement in the left and right directions on the upper surface of the separate sliding mold may be formed.

In addition, the upper mold portion, the center of the lower fixed mold penetrates, the suspended mold support is installed in a state in which a pair of separate sliding mold slides left and right on the bottom surface;

An upper mold side support portion installed around a side of the suspended mold support;

An upper mold support installed on the upper mold side support and spaced apart from the stop mold support by a predetermined distance; And

It is installed on the bottom of the upper mold support by the upper mold rod rod can be raised and lowered, and the upper insert mold is pressed on the outer surface of the primary molded article in the state that the skin material is fixed to the bottom surface.

At this time, a plurality of insert fixing pins are formed around the upper insert mold to secure the skin material.

Here, the concave-convex portion 55a of various patterns having an embossed or intaglio may be formed on the inner surface of the mold in contact with the skin 2 of the upper insert mold 55.

In addition, the fabric member 4 and the skin 2 may be laminated and fixed on the bottom surface of the upper insert mold 55 in order, and then pressed to the surface of the primary molded product 1.

The injection molding method is inserted into the skin material for achieving the object of the present invention,

A first step of fixing the skin material by using a plurality of insert fixing pins on the bottom of the upper insert mold of the upper mold part in a state in which the lower mold part and the upper mold part are spaced apart and the pair of separate sliding molds of the middle mold part are opened;

A second step of closing the detachable sliding mold of the stop mold part and matching the lower fixed mold part of the lower mold part;

The resin is injected into the space between the lower fixed mold and the separate sliding mold through the injection nozzle formed in the lower mold part, and then the skin is formed on the upper surface of the separate sliding mold while waiting for a predetermined time so that the primary molded product is molded. A third step of preheating the skin material fixed on the bottom of the upper insert mold by generating heat;

A fourth step of separating the interrupting mold part and the lower mold part before the primary molded product is completely solidified so that the separating mold sliding mold of the interrupting mold part is opened left and right to lower the upper insert mold of the upper mold part;

The upper insert mold is lowered by being connected to the upper mold rod and lowered, and compresses the primary molded product in a state where it is reacted with the skin material fixed to the lower surface of the upper insert mold, and is located on the curved side of the primary molded product. A fifth step of operating the skin material adsorption unit having a plurality of air holes in the air to form a vacuum pressure between the primary molded product and the skin material so that the skin material on the curved side is flatly bonded;

A sixth step of releasing the vacuum action of the skin adsorption portion when the predetermined time or a predetermined pressure (set) or more, the upper insert mold is raised to separate from the lower fixed mold; And

A seventh step of completing the secondary molded article having the skin material attached thereto and then moving the lower plate of the lower mold portion by lifting and lowering the second molded article through the lower fixed mold by lifting and lowering the lower plate of the lower mold portion; It includes.

In the present invention as described above, the injection molding in one device and at the same time the skin material (leather, artificial leather, non-woven fabric, cloth, synthetic resin sheet and film, etc.) to the outside of the injection-molded product, reducing the cost and quality of the molded product There is an effect to achieve.

In addition, the present invention is effective in reducing the unit cost of the product or the damage caused by air pollution during operation because there is no need for a bond during molding.

In addition, the present invention has an effect that the moldability is improved as the skin material is secondary molded in a preheated state, and the adhesive force with the primary molded product is improved.

In addition, the present invention forms the skin material adsorption portion on the lower fixing mold, so that the skin material is adsorbed toward the lower fixing mold, so that even when the end of the primary molded product is inclined or curved inward, the skin material is not lifted.

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

1 is a front state diagram in which the skin material is fixed in the open, upper and lower mold portions of the present invention, Figure 2 is a front state diagram combined with the lower mold portion and the interruption mold portion of the present invention, Figure 3 is the bottom of the present invention Figure 4 is a detailed front view of the mold portion and the interruption mold portion separated, Figure 3 is a detailed view of the portion A of Figure 3, Figure 5 is a front view of the interruption mold portion of the present invention opened to the left and right, Figure 6 is an upper insert mold of the present invention FIG. 7 is a detailed view of the part B of FIG. 6, and FIG. 8 is a front state diagram in which the molded article inserted with the skin material of the present invention is taken out from the lower stationary mold. FIG. 10 is a schematic view showing an embodiment for forming a pattern on the surface of the skin material of the present invention, Figure 10 is a schematic diagram showing another embodiment for forming a pattern on the surface of the skin material of the present invention.

In the multiple injection molding apparatus in which the skin material is inserted according to the present invention as shown in the drawing, the lower fixing mold 14 forming the inner frame of the molding product is installed, and the resin is injected into the lower fixing mold 14. A lower mold part 10 having an injection nozzle 15 therein; A skin material adsorption portion 20 including a plurality of air holes 21, 22, and 23 through which the vacuum pressure is formed on the surface of the mold by penetrating the inner upper portion of the lower fixing mold 14; Separated sliding mold (31) formed of a pair of sliding and opening or closing from the upper side of the lower mold portion 10 to the left and right, the pair is closed from the upper side of the lower fixed mold 14 in a closed state to form the outer frame of the molding product (31) And interruption mold portion 30 consisting of 32; A skin material heating part 35 installed on upper surfaces of the separate sliding molds 31 and 32 to generate heat; And the upper insert mold 55 is installed in a state capable of raising and lowering the upper portion of the interruption mold portion 30, the upper insert mold 55 is lowered in a state in which the separate sliding mold (31,32) is opened, the bottom surface The upper skin member 2 fixed to the upper mold member 50 is pressed to the outer surface of the primary molded product 1 while being heated by the skin heating member 35.

Hereinafter, each component will be described in more detail. First, the lower mold portion 10 is provided with a lower mold support 11 for forming a base supported on the bottom.

The lower mold support 11 is manufactured in a flat shape and installed on the bottom, and forms the lower mold side support 12 around the side of the lower mold support 11.

The lower mold side support portion 12 is manufactured in the shape of a column having a predetermined height, and serves to support a predetermined distance spaced between the lower mold fixing part 13 and the lower mold support 11 installed at an upper portion thereof.

That is, the space between the lower mold support 11 and the lower mold fixing portion 13 forms an empty space supported by the lower mold side support 12.

The lower mold fixing part 13 is installed in a state in which the lower fixing mold 14 is attached / detached. To this end, it may be formed in the center of the lower mold fixing portion 13 to form a seating groove for stably binding the lower fixing mold (14).

The lower fixing mold 14 is mounted on the upper center of the lower mold fixing part 13 to form the inner frame of the molding product.

In this case, an injection nozzle 15 penetrating into the center of the lower fixing mold 14 to inject resin into the mold is formed, and the injection nozzle 15 extends perpendicularly to the lower mold support 11 to inject the nozzle. Is installed.

In addition, a plurality of mil pins 16 which are raised and lowered through the inner upper portion of the lower fixed mold 14 are installed, the plurality of mil pins 16 push the molded product upwards from the lower fixed mold 14 Detach and take out.

The plurality of mil pins 16 extends through the lower mold fixing portion 13, the lower end of which is installed in a state capable of lifting up and down between the lower mold support 11 and the lower mold fixing portion 13 ( 17) is fixed.

In this case, a hydraulic cylinder (not shown) for moving the lower plate 17 up and down is installed on the lower mold support 11.

In addition, an inner side of the lower fixing mold 14 may be used by forming a conventional cooling device (not shown) for protecting the injection nozzle 15 from the heat generated during resin injection.

In addition, a skin material adsorption part 20 including a plurality of air holes 21, 22, and 23 is formed around a corner and an end of the lower fixing mold 14, wherein the skin material adsorption part 20 is 2. In the process of primary molding, namely, coating the skin 2 on the surface of the primary molded part 1, a vacuum pressure is formed between the skin 2 and the lower fixed mold 14 so that the end of the primary molded part 1 Even when inclined or curved inward, the skin material is allowed to adhere without lifting.

Such skin material adsorption portion 20 is provided with a vacuum motor (not shown) in the lower anti-support 11, a plurality of air holes (21, 22, 23) formed in the lower fixed mold 14 in the vacuum motor Can be connected.

At this time, the air holes (21, 22) formed in the portion of the lower fixing mold 14 higher than the upper surface of the lower mold fixing part 13 of the plurality of air holes (21, 22, 23) of the skin material adsorption portion (20) ) Is to protrude to the upper surface of the lower fixed mold 14, the protrusion height is preferably formed to be equal to or slightly higher than the thickness of the primary molded product (1).

This is because when the resin is injected between the lower fixing mold 14 and the separate sliding molds 31 and 32 to manufacture the primary molded article 1, the resin is lower fixed than the upper surface of the lower mold fixing unit 13. It is possible to prevent the inflow into the air holes 21 and 22 formed in the portion of the mold 14 and to allow the ends of the air holes 21 and 22 to communicate with the surface of the primary molded product 1. This is to achieve vacuum adsorption.

In addition, an upper portion of the lower mold portion 10 is provided with an interruption mold portion 30 including a pair of separate sliding molds 31 and 32.

The pair of separate sliding molds 31 and 32 are coupled to the bottom surface of the upper mold part 50 to be opened or closed by sliding in left and right directions.

The pair of separate sliding molds (31,32) is closed from the lower fixed mold 14 in the closed state is formed to form the outer frame of the molding product, the separate sliding mold (31,32) is a hydraulic cylinder is installed separately It can be opened and closed by simultaneously operating in left and right directions.

At this time, the bottom of the separate sliding mold (31, 32) may be formed a plurality of buffer portion 33 to cushion the impact when matching with the lower mold portion 10, the buffer portion 33 is rubber Ash, or an elastic member such as a spring may be installed.

In addition, a sliding guide groove 36 for guiding the sliding movement in the left and right directions may be formed on the upper surfaces of the separate sliding molds 31 and 32, and the sliding protrusion at the upper mold part 50 corresponding thereto. Can be formed.

In addition, the upper surface of the separate sliding mold (31, 32) as described above is provided with a skin material heating part 35, the skin material heating part 35 is divided into two sides, left and right together with the separate sliding mold (31, 32), Preheat the outer skin material 2 so that it is easily expanded and deformed during the secondary molding, that is, adhesion with the primary molded product 1, and in the shrinking process, the surface of the primary molded product 1 is tightened without wrinkles or bubbles. There is an advantage in close contact.

The skin heating unit 35 may use an electric heating heater and preheat the skin 2 during the molding process of the primary molded product 1.

In addition, the upper mold portion 50, the center of the lower fixed mold 14, the center of the penetrating through, and a pair of separate sliding molds (31, 32) is installed on the bottom in a state in which the left and right sliding mold ( 51).

The upper mold side support portion 52 is installed around the side of the suspended mold support 51, and the upper mold support 53 is spaced apart from the suspended mold support 51 by a predetermined distance from the upper mold side support 52. do.

The upper insert mold 55 is installed on the bottom surface of the upper mold support 53 by the upper mold rod rod 54, and the upper insert mold 55 is fixed to the bottom surface of the upper insert mold 55. It is pressed to the outer surface of the primary molded product 1 in the state, for this purpose, to form a plurality of insert fixing pins 56, the skin material 2 is fixed around the bottom of the upper insert mold (55).

At this time, the upper insert mold 55 may form a concave-convex portion 55a having various patterns of embossed or intaglio on the inner surface of the mold in contact with the skin 2 as shown in FIG. 9.

As the uneven portion 55a is pressed by the skin 2, the pattern of the uneven portion 55a is formed in the skin 2 as it is.

In addition, as shown in FIG. 10, the fabric member 4 and the skin 2 may be laminated and fixed on the bottom of the upper insert mold 55, and then pressed to the surface of the primary molded product 1.

At this time, the fabric member 4 may be used for various types of fabric patterns, such that the fabric pattern is formed on the surface of the skin material 2 in the pressing process of the upper insert mold (55).

The present invention using the skin material (2) not subjected to the primary processing for the formation of the pattern, such as embossing, various forms on the surface of the skin material (2) easily without a separate device or additional process during the injection molding process There is an advantage to be able to form or produce a pattern.

In addition, by using the low-cost skin material (2) as it is, there is an advantage that the manufacturing cost is reduced.

The multi-injection molding apparatus of the present invention having the configuration as described above is generally installed and used in the vertical direction, but may be installed and used in the horizontal direction. In the present invention, the injection molding is performed according to the same action and sequence in both the vertical installation and the horizontal installation.

Referring to the injection molding method using the injection molding apparatus of the present invention having the configuration as described above is as follows.

(Step 1)

First, as shown in FIG. 1, the lower mold part 10 and the upper mold part 50 are spaced apart from each other, and a pair of separate sliding molds 31 and 32 of the middle mold part 30 are opened, and the upper mold part 50 is opened. The upper insert mold 55 is fixed to the skin 2 using a plurality of insert fixing pins 56 on the bottom.

(2nd step)

Next, as shown in FIG. 2, the separate sliding molds 31 and 32 of the interrupting mold part 30 are closed and matched to the lower fixed mold 14 of the lower mold part 10.

(3rd step)

Then, the resin is injected into the space between the lower fixing mold 14 and the separate sliding molds 31 and 32 through the injection nozzle 15 formed in the lower mold part 10, and then waits for a predetermined time. While the primary molded article is molded, the skin material heating part 40 formed on the upper surfaces of the separate sliding molds 31 and 32 is heated to preheat the skin material 2 fixed to the bottom of the upper insert mold 55. )

(4th step)

Thereafter, as shown in FIGS. 3 and 5, the interrupting mold part 30 and the lower mold part 10 are separated before the primary molded product 1 is completely solidified, thereby separating the sliding mold 31 of the interrupting mold part 30. 32 is opened to the left and right to allow the upper insert mold 55 of the upper mold part 50 to descend.

(5th process)

Next, as shown in FIG. 6, the upper insert mold 55 is connected to the upper mold rod rod 54 and descends, and the skin 2 fixed to the bottom of the upper insert mold 55 is in the reaction solid state 1. While pressing the primary molded article 1, the skin absorbing portion 20 having a plurality of air holes 21, 22, 23 formed in the lower fixing mold 14 so as to be positioned on the curved side of the primary molded article 1 is provided. It is operated so that a vacuum pressure is formed between the primary molded product 1 and the skin 2 so that the skin 2 at the curved side is flatly bonded.

(Step 6)

Then, when a predetermined time or a predetermined pressure (set) or more, the vacuum action of the skin material adsorption portion 20 is released, the upper insert mold 55 is raised to be separated from the lower fixed mold (14).

(7th process)

Then, as shown in FIG. 8, after the secondary molded article with the skin material is completed and elapsed for a predetermined time, the lower mill plate 17 of the lower mold part 10 is operated by lifting and lowering a plurality of mill pins 16 connected thereto. The secondary molded product 3 is detached from the lower fixing mold 14 to be taken out.

Figure 1 is a front view of the skin material is fixed in the upper, lower, and the interruption mold opening state of the present invention.

Figure 2 is a front state diagram coupled to the lower mold portion and the interruption mold portion of the present invention;

Figure 3 is a front state of the lower mold portion and the interruption mold portion of the present invention separated.

4 is a detailed view of portion A of FIG.

Figure 5 is a front view of the interruption mold of the present invention opened to the left and right.

Figure 6 is a front state diagram of the upper insert die of the present invention is coated with a skin material on the primary molded article.

FIG. 7 is a detailed view of portion B of FIG. 6; FIG.

Figure 8 is a front view of the molded article inserted into the skin material of the present invention is taken out from the lower fixed mold.

Figure 9 is a schematic diagram showing an embodiment for forming a pattern on the surface of the skin material of the present invention.

Figure 10 is a schematic diagram showing another embodiment for forming a pattern on the surface of the skin material of the present invention.

<Code Description of Main Parts in Drawing>

10: lower mold part 11: lower mold support

12: lower mold side support portion 13: lower mold fixing

14: lower fixed mold 15: injection nozzle

16: Milpin 17: Lower Mill

20: skin adsorption portion 21, 22, 23: air hole

30: interruption mold 31, 32: separate sliding mold

33: shock absorber 36: sliding guide groove

40: skin heating part 50: upper mold part

51: suspended mold support 52: upper mold side support

53: upper mold support 54: upper mold rod

55: upper insert mold 56: insert fixing pin

1: Primary molded part 2: Skin material

3: secondary molded parts

Claims (12)

In the multiple injection molding apparatus in which the skin material is inserted, A lower mold part (10) having a lower fixed mold (14) forming an inner frame of a molded product, and having an injection nozzle (15) for injecting resin into the lower fixed mold (14); A skin material adsorption part (20) consisting of a plurality of air holes (21, 22, 23) for penetrating the inner upper portion of the lower fixing mold (14) to form a vacuum pressure on the surface of the mold; Separated sliding mold (31) formed of a pair of sliding and opening or closing from the upper side of the lower mold portion 10 to the left and right, the pair is closed from the upper side of the lower fixed mold 14 in a closed state to form the outer frame of the molding product (31) Suspension mold portion 30 consisting of; A skin material heating part 35 installed on upper surfaces of the separate sliding molds 31 and 32 to generate heat; And The upper insert mold 55 is installed on the upper side of the interruption mold 30 in a state of being able to move up and down, and the upper insert mold 55 is lowered while the separate sliding molds 31 and 32 are opened. An upper mold part 50 to which the fixed skin material 2 is pressed onto the outer surface of the primary molded product 1 while being heated by the skin material heating part 35; The multiple injection molding apparatus is inserted into the skin material, characterized in that it comprises a. The method of claim 1, The lower mold portion 10, A lower mold support 11 for forming a base supported on the bottom; A lower mold side support part 12 installed around a side of the lower mold support 11; A lower mold fixing part 13 installed on the lower mold side support part 12 and spaced apart from the lower mold support 11 by a predetermined distance; A lower fixing mold (14) mounted at an upper center of the lower mold fixing unit (13) to form an inner frame of a molding product; An injection nozzle 15 penetrating into the center of the lower fixed mold 14 to inject resin into the mold; A plurality of mil pins 16 which are pulled up and down through the inner upper portion of the lower fixed mold 14 to push out the molded product upward; And A lower tight plate 17 fixedly installed below the plurality of mill pins 16 and installed in a state capable of lifting up and down between the lower mold support 11 and the lower mold fixing unit 13; Multiple injection molding apparatus is inserted into the skin material, characterized in that it comprises a. The method of claim 2, Air injection (21, 22, 23) of the skin absorbing portion 20 is formed around the edge and the end of the lower fixed mold 14, the injection molding multiple injection molding apparatus. The method of claim 2, Among the plurality of air holes 21, 22, and 23 of the skin material adsorption part 20, air holes 21 and 22 formed in a portion of the lower fixing mold 14 higher than the upper surface of the lower mold fixing part 13 are provided. A multi-injection molding apparatus in which a skin material is inserted to protrude to the upper surface of the lower fixed mold (14), wherein the protruding height is formed to be equal to the thickness of the primary molded product. The method of claim 2, Multi-injection molding apparatus in which the skin material is inserted, characterized in that the bottom surface of the separate sliding mold (31, 32) is formed with a plurality of shock absorbing portion (33) to cushion the impact when matching with the lower mold (10). The method of claim 2, Multi-injection molding apparatus is inserted into the skin material, characterized in that the sliding guide groove 36 for guiding the sliding movement in the left and right directions on the upper surface of the separate sliding mold (31, 32). The method of claim 1, The upper mold portion 50, A stop mold support 51 having a center penetrating the lower fixed mold 14 and a pair of separate sliding molds 31 and 32 installed on the bottom thereof in a slidable direction; An upper mold side support portion 52 installed around a side of the suspended mold support 51; An upper mold support 53 installed on the upper mold side support 52 to be spaced apart from the stop mold support 51 by a predetermined distance; And It is installed on the bottom of the upper mold support 53 by the upper mold rod rod 54, and can be moved up and down, and is pressed onto the outer surface of the primary molded product 1 in a state where the skin material 2 is fixed to the bottom surface thereof. Upper insert mold 55; Multiple injection molding apparatus is inserted into the skin material, characterized in that it comprises a. The method of claim 7, wherein Multiple injection molding apparatus is inserted into the skin material, characterized in that a plurality of insert fixing pins 56 are formed around the upper insert mold 55, the skin material (2) is fixed. The method of claim 7, wherein Multi-injection molding apparatus in which the skin material is inserted, characterized in that to form a concave-convex portion (55a) of a variety of embossed or intaglio on the inner surface of the mold in contact with the skin material (2) of the upper insert mold (55). The method of claim 7, wherein Multi-layer injection molding is inserted into the upper insert mold 55, the fabric member (4) and the skin material (2) in order to be laminated and fixed, and then pressed to the surface of the primary molded product (1) Device. The multi-injection molding apparatus according to any one of claims 1 to 10, wherein the multi-injection molding apparatus is inserted and used in a horizontal direction. In the injection molding method in which the skin material is inserted, The lower mold part 10 and the upper mold part 50 are spaced apart, and a pair of separate sliding molds 31 and 32 of the middle mold part 30 are opened, and the upper insert mold 55 of the upper mold part 50 is opened. A) first step of fixing the skin material (2) by using a plurality of insert fixing pins (56) on the bottom; A second process of closing the separate sliding molds 31 and 32 of the interrupting mold part 30 and matching the lower fixed mold 14 of the lower mold part 10; After the resin is injected into the space between the lower fixed mold 14 and the separate sliding molds 31 and 32 through the injection nozzle 15 formed in the lower mold part 10, the first molded article is waited for a predetermined time. A third step of preheating the skin material 2 fixed to the bottom of the upper insert mold 55 by heating the skin material heating part 40 formed on the upper surfaces of the separate sliding molds 31 and 32; Before the primary molded product is completely solidified, the interruption mold part 30 and the lower mold part 10 are separated to separate the sliding molds 31 and 32 of the interruption mold part 30 to the left and right sides, thereby allowing the upper mold part 50 to be opened. A fourth step of allowing the upper insert mold 55 to descend; The upper insert mold 55 is lowered by being connected to the upper mold rod rod 54 and compresses the skin material 2 fixed to the bottom of the upper insert mold 55 and the primary molded product 1 in a reaction state. At the same time, the primary molded product 1 is operated by operating the skin material adsorption portion 20 having a plurality of air holes 21, 22, and 23 formed in the lower fixing mold 14 so as to be located at the curved side of the primary molded product 1. A fifth step of allowing vacuum pressure to be formed between the skin and the skin 2 so that the skin 2 at the curved side is flatly bonded; A sixth step of removing the vacuum action of the skin material adsorption unit 20 when the predetermined time or a predetermined pressure or more is set, and removing the upper insert mold 55 from the lower fixed mold 14; And After completion of the secondary molded article with the skin material completed for a predetermined time, the lower plate 17 of the lower mold 10 is operated by lifting and lowering a plurality of mill pins 16 connected thereto to penetrate the lower fixed mold 14. A seventh step of detaching the secondary molded product 3; Multiple injection molding method is inserted into the skin material comprising a.

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