KR20240013575A - A High Sensitivity Foam Plastic Product Having Stich and A 3 Component Injection Mold Assembly including Stich Product Having LED and A High Sensitivity Foam Plastic Product Manufacturing Method Using That - Google Patents

Abstract

The present invention relates to a highly sensitive foam molded product for automobiles having stitches, a triple injection mold assembly for manufacturing the same, and a method for molding a highly sensitive foam plastic product using the same. Among them, the highly sensitive foam molded product for automobiles having stitches is made of a transparent material. It includes a plate-shaped skeleton portion formed of a resin, a skin portion located on an upper surface of the skeleton portion, and a stitch portion formed of several protrusions protruding from the skeleton portion, wherein the stitch portion penetrates the skin portion and is exposed to the outside. It is characterized by being formed as much as possible.

Description

High sensitivity foam molded product for automobiles with stitches, triple injection mold assembly for manufacturing the same, and method for molding high sensitivity foam plastic products using the same {A High Sensitivity Foam Plastic Product Having Stich and A 3 Component Injection Mold Assembly including Stich Product Having LED and A High Sensitivity Foam Plastic Product Manufacturing Method Using That}

The present invention relates to an injection mold assembly, and more specifically, to a high-sensitivity foam automobile, which is composed of several layers such as a skin layer, a foam layer, and a core layer, and has stitches used in the production of products such as garnishes with built-in LED lamps. It relates to a molded product, a triple injection mold assembly for manufacturing the same, and a method of molding a highly sensitive foamed plastic product using the same.

Injection molding is the process of plasticizing polymer resin by applying heat and then injecting the molten polymer resin into an injection mold. It has the advantage of being able to mass-produce standard products of various sizes. there is.

Injection molding of general polymer resins has the problem that the surface gloss of the injection product is not excellent. Due to these problems, injection molded products generally require post-processing.

In particular, in the case of highly sensitive plastic parts applied to automobile interiors, they are manufactured through an in-mold grain process using leather and fabric to enhance the vehicle interior.

The IMG process involves injection molding the core portion, bonding and drying it, setting the core portion in an IMG mold, vacuum forming the fabric, pressing it, and cutting it to complete the molding.

However, the prior art had the following problems.

There was a problem in that the injection mold and the IMG mold were required separately, and the IMG process had to proceed after the injection mold process, making the manufacturing cost and manufacturing process complicated.

Registered Patent No. 10-1810107

To solve the above-mentioned problems, the purpose of the present invention is to integrate the injection mold and IMG mold, so that the manufacturing cost is low, the manufacturing process is simple, three raw materials with different physical properties can be injection molded, and the LED lamp is built-in. The aim is to provide a highly sensitive foam automobile molded product with beautiful stitching, a triple injection mold assembly for manufacturing the same, and a method for molding a highly sensitive foam plastic product using the same.

In order to achieve the above-described object, the present invention provides a high-sensitivity foam molded article for automobiles with stitches, which includes a plate-shaped skeleton portion formed of a resin of a transparent material, a skin portion located on the upper surface of the skeleton portion, and the skeleton portion. It includes a stitch portion formed of several protruding protrusions, and the stitch portion is formed to penetrate the skin portion and be exposed to the outside.

A light source is further added below the skeleton part.

In addition, a high-sensitivity foam molded article for automobiles with stitches, which is another embodiment of the present invention, includes a movable block located below, a fixed block located above the movable block, and the fixed block moves up and down along the space inside the fixed block. , a core block in which a molding space is formed between the lower surface and the upper surface of the movable block, a first nozzle for injecting the first material into the molding space, and a second nozzle for injecting the second material and the third material into the molding space. A nozzle, an anti-slip block portion that, when located above the core block, restricts the upward movement of the core block to limit the molding space of the first material, and, when located above the core block, moves the core block upward in a constant manner. A first core bag block unit that moves a certain distance to adjust the input amount of the second material and the third material, and when located above the core block, moves the core block upward a certain distance to inject the second material and the third material. A system is used that includes a second core back block section that controls the amount of foaming of the material, and the anti-slip block section, the first core back block section, and the second core back block section are each provided above the core block and extend along the fixing block. It is orthogonal and moves horizontally, and is characterized in that only one of the anti-slip block portion, the first core back block portion, and the second core back block portion is selectively located above the core block, and the anti-slip block portion is selectively positioned above the core block. The prevention block is formed as a rectangular parallelepiped, and the first core bag block of the first core bag block part is formed as a rectangular parallelepiped, and an inclined surface that slopes upward toward the tip is formed on the lower surface, and a corresponding inclined surface is also formed on the upper surface of the fixing block. The second core back block of the second core back block part is formed in a rectangular parallelepiped and has an inclined surface that slopes upward toward the tip on the lower surface, and a corresponding inclined surface is also formed on the upper surface of the fixed block. The anti-slip block portion, the first core back block portion, and the second core back block portion are located above, the anti-slip block portions are divided into a pair and are located at the upper edge of the core block, and the first core back block portion The portion is located between the anti-slip block portions, and the second core back block portion is divided into a pair and is located between the first core back block portion and the anti-slip block portion, respectively, and the anti-slip block portion and the first anti-slip block portion. The sliding direction of the block for the first core bag is the same, and the sliding direction of the block for the second core bag is different, the anti-slip block moves and is located above the core block, and the first block flows through the first nozzle. In the first step where the material is injected into the molding space to injection mold the skeleton portion and the stitch portion, and after the anti-slip block portion is removed, the first core back block portion moves and is positioned above the core block, A second step in which the second and third materials are injected into the molding space through a second nozzle to injection mold the skin portion, and after the first core back block is removed, the second core back block is moved. A third step is located above the core block and the third material is foamed.

The first nozzle is divided into a 1-1 nozzle and a 1-2 nozzle, the 1-1 nozzle and the 1-2 nozzle are located on both sides of the molding space, and the second nozzle is the first nozzle. It is characterized in that it is located between the -1 nozzle and the 1-2 nozzle.

The second nozzle is characterized in that the third material is injected so that the second material is positioned at the top and bottom in the center.

The present invention's high-sensitivity foam molded product for automobiles with stitches, the triple injection mold assembly for manufacturing the same, and the method for molding a highly-sensitive foam plastic product using the same have the following effects.

The internal space of the molding space is controlled by the movement of the three blocks, allowing the range of primary injection, secondary injection, and foaming to be adjusted. During the secondary injection, different materials are sequentially injected to form one layer. Double-stitched products can be manufactured using molds, which has the advantage of lowering the overall manufacturing cost, simplifying the process, and increasing aesthetics due to the built-in LED lamp.

1 is a perspective view showing a preferred embodiment of a triple injection mold assembly including a stitched product according to the present invention.
Figure 2 is a side cross-sectional view showing a preferred embodiment of a triple injection mold assembly including a stitched product according to the present invention.
Figure 3 is a cross-sectional view showing a preferred embodiment of a triple injection mold assembly including a stitched product according to the present invention.
Figure 4 is a side cross-sectional view showing the operation process of the first injection in a triple injection mold assembly including a stitched product according to the present invention.
Figure 5 is a side cross-sectional view showing the operation process of secondary injection in a triple injection mold assembly including a stitched product according to the present invention.
Figure 6 is a side cross-sectional view showing the foaming process in a triple injection mold assembly including a stitched product according to the present invention.
Figure 7 is a view showing a preferred embodiment of a highly sensitive foam molded article for automobiles having stitches according to the present invention.
Figure 8 is a side cross-sectional view showing the configuration of a highly sensitive foam molded article for automobiles having stitches according to the present invention.

Hereinafter, a preferred embodiment of a high-sensitivity foam automobile molded product having stitches according to the present invention, a triple injection mold assembly for manufacturing the same, and a method for molding a highly-sensitive foam plastic product using the same will be described in detail with reference to the accompanying drawings.

As shown in Figures 1 and 2, the triple injection mold assembly including the stitch product of the present invention includes a movable block 10 located below and a fixed block 20 located above the movable block 10. And, a core block 30 that rises and falls along the space 22 inside the fixed block 20 and forms a molding space 12 between the lower surface and the upper surface of the movable block 10, and the molding space A first nozzle 40 for injecting the first material into (12), a second nozzle 50 for injecting the second and third materials into the molding space 12, and an upper portion of the core block 30 An anti-slip block portion 60 is provided and moves horizontally along the fixing block 20 and is selectively located above the core block 30, and is provided above the core block 30 and the fixing block 20 ) moving horizontally along the first core back block portion 70 selectively located above the core block 30, and provided above the core block 30 horizontally along the fixing block 20. It may include a second core back block portion 80 that is selectively positioned above the core block 30 while moving.

First, a movable block 10 is provided in the triple injection mold assembly of the present invention. The movable block 10 forms the lower skeleton of the triple injection mold assembly of the present invention. It is located below and has a molding space 12 on the upper surface for molding formed on the lower surface of the core block 30, which will be described below. It engages with the space 32 to form the appearance of the product.

A fixed block 20 is provided above the movable block 10. The fixed block 20 forms the upper skeleton of the triple injection mold assembly of the present invention, is located above the movable block 10, and has a vertical penetration space 22 formed therein. The penetration space 22 of the fixing block 20 serves to guide the core block 30, which will be described below, to move safely.

And, a core block 30 is provided inside the fixed block 20. The core block 30 is provided in the through space 22 inside the fixing block 20, and the core block 30 is configured to rise and fall along the through space 22.

A molding space 32 is provided below the core block 30, and engages with the molding space 12 on the upper surface of the movable block 10 to form the outer shape of the molded product.

The molding spaces 32 and 12 are formed in a shape according to the outer shape of the molded product. For example, several grooves are formed in the core block 30 so that several protrusions can be formed in the molded product. . This is because transparent resin is injected from the first nozzle 40, which will be explained below, and then when the stitch is formed by the resin injected from the second nozzle 50, the protrusions are exposed to the outside, forming a layer below the stitch. This is to ensure that light generated from a light source such as an LED is exposed to the outside.

A buffer portion 14 is provided above the movable block 10. As shown in FIG. 4, the buffer portion 14 is provided at a point where the movable block 10, the core block 30, and the fixed block 20 are adhered.

The buffer unit 14 includes a buffer block 14a formed as a block and an elastic unit 14b that elastically supports the buffer block 14a. The buffer portion 14 serves to prevent the core block 30 and the fixed block 20 from being damaged by contact with the movable block 10.

In addition, the triple injection mold assembly of the present invention is provided with a first nozzle 40. The first nozzle 40 serves to inject the first material (X) into the molding space (12). For example, PPF (polypropylene fiber), which forms the skeleton of the stitch, can be used as the first material (X).

Additionally, the first material (X) may be a transparent resin. This is to mount an LED under the stitch so that the LED light is exposed to the outside through the stitch.

The first nozzle 40 is connected to the molding space 12, and a heater runner (not shown) is provided in the path along which the first nozzle 40 moves to keep the first material (X) in a constant state. You can keep it.

The first nozzle 40 can be configured in various ways to safely and efficiently guide the first material (X) into the molding space 12, and can be configured as shown in FIG. 2.

The first nozzle 40 is divided into a 1-1 nozzle 42 and a 1-2 nozzle 44, and the 1-1 nozzle 42 and the 1-2 nozzle 44 are the It may be configured to be located on both sides of the molding space 12. A second nozzle 50, which will be described below, may be positioned between the 1-1 nozzle 42 and the 1-2 nozzle 44.

In addition, the triple injection mold assembly of the present invention is provided with a second nozzle 50. The second nozzle 50 serves to inject the second material (Y) and the third material (Z) into the molding space. For example, the second material (Y) and the third material (Z) may be made of a material that forms the soft member and skin of the stitch.

The second material (Y), which forms the skin, may be TPO (Thermoplastic Olefine), and specifically, TPS (Thermoplastic Starch) may be used. The third material (Z) is inserted between the materials forming the skin, and polyurethane or the like can be used to foam and provide a soft function.

The second material (Y) and the third material (Z) are formed so that the second material (Y) consists of two layers and the third material (Z) is inserted between them to form a third layer. As shown in FIG. 5, the second nozzle 50 may be formed.

That is, the second nozzle 50 is formed in double form, so that the 2-1 nozzle 52 through which the second material (Y) flows is located at the edge, and the second nozzle through which the third material (Z) flows. -2 nozzle 54 is configured to be located in the center of the 2-1 nozzle 52.

At this time, after a predetermined time has passed after the second material (Y) is injected through the 2-1 nozzle 52, the third material (Z) is injected through the 2-2 nozzle 54. A sandwich structure is created as shown in Figure 5.

The second nozzle 50 is connected to the molding space 12, and a heater runner is provided in the path along which the second nozzle 50 moves so that the second material (Y) and the third material (Z) are It can be maintained in a constant state.

In addition, an anti-slip block portion 60 is provided above the core block 30. The anti-slip block portion 60 is provided above the core block 30 and moves horizontally along the fixing block 30 to be selectively positioned above the core block 30. That is, if the anti-slip block portion 60 is located above the core block 30, the core block 30 cannot move upward, and the anti-slip block portion 60 is positioned above the core block 30. When removed from above, the core block 30 can move upward.

For the above-described function, the anti-slip block unit 60 can be configured in various ways, and in the present invention, it can be configured as follows.

The anti-slip block unit 60 may include a first hydraulic cylinder 62 and an anti-slip block 64 formed in a rectangular parallelepiped and located at the tip of the first hydraulic cylinder 62.

The first hydraulic cylinder 62 operates by a signal from a control unit (not shown), and the anti-slip block 64 moves according to the driving of the first hydraulic cylinder 62.

In addition, a first core back block portion 70 is provided above the core block 30. The first core back block unit 70 is provided above the core block 30 and is configured to move horizontally along the fixing block 30 and to be selectively positioned above the core block 30. That is, when the first core back block unit 70 is located above the core block 30, the core block 30 moves upward a certain distance, and the first core back block unit 70 moves upward. When the core block 30 is removed from above, the core block 30 can move upward.

For the above-described function, the first core back block unit 70 can be configured in various ways, and in the present invention, it can be configured as follows.

The first core back block portion 70 is fixed to the second hydraulic cylinder 72 and the tip of the second hydraulic cylinder 72, and is formed as a rectangular parallelepiped whose lower surface is inclined upward toward the tip. It may be configured to include a first core back block 74.

The second hydraulic cylinder 72 operates by a signal from the control unit, and the first core back block 74 moves according to the driving of the second hydraulic cylinder 72.

In addition, a second core back block portion 80 is provided above the core block 30. The second core back block unit 80 is provided above the core block 30 and is configured to move horizontally along the fixing block 30 and be selectively positioned above the core block 30. That is, when the second core back block unit 80 is located above the core block 30, the core block 30 moves upward a certain distance, and the second core back block unit 80 moves upward. When the core block 30 is removed from above, the core block 30 can move upward.

For the above-described function, the second core back block unit 80 can be configured in various ways, and in the present invention, it can be configured as follows.

The second core back block portion 80 is fixed to the third hydraulic cylinder 82 and the tip of the third hydraulic cylinder 82, and is formed as a rectangular parallelepiped whose lower surface is inclined upward toward the tip. It may be configured to include a second core back block 84.

The third hydraulic cylinder 82 operates by a signal from the control unit, and the second core back block 84 moves according to the driving of the third hydraulic cylinder 82.

Additionally, the anti-slip block portion 60, the first core back block portion 70, and the second core back block portions 80 above the core block 30 may be arranged as follows. The anti-slip block portions 60 are divided into a pair and are located on both sides of the upper surface of the core block 30, and the first core back block portion 70 is located between the anti-slip block portions 60. , the second core back block portion 80 is divided into a pair and is located between the first core back block portion 70 and the anti-slip block portion 60, respectively, and the anti-slip block portion 60 and The sliding direction of the first core back block unit 70 may be the same, and the sliding direction of the second core back block unit 80 may be configured differently.

By adjusting the degree of movement of the first block for core bag 70 and the block for second core bag 80, the input amount and foaming amount of the second material (Y) and third material (Z) can be adjusted. do.

The high-sensitivity foam molded article for automobiles with stitches formed by the above-described process includes a plate-shaped skeleton portion 100 formed of a resin of a transparent material, and a skin portion 200 located on the upper surface of the skeleton portion 100. and a stitch portion 102 formed of several protrusions protruding from the skeleton portion 100, and the stitch portion 102 may be formed to penetrate the skin portion 200 and be exposed to the outside. .

The skeleton portion 100 and the stitch portion 102 are molded by resin injected by the first nozzle 40, and the skin portion 200 is formed by resin injected by the second nozzle 50. is formed by

A light source 300 may be further provided below the molded product, that is, the skeleton portion 100. The light source 300 emits light by receiving an external power source such as an LED, and the light generated from the light source 300 is exposed to the outside through the skeleton portion 100 and the stitch portion 102.

That is, the aesthetics can be increased on the outside of the molded product due to the light exposed through the stitch portion 102. Additionally, the light source 300 may be configured in various colors, so that the colors of light exposed through the stitch portion 102 may be configured in various ways.

In addition, the present inventor's high-sensitivity foam molded article for automobiles with stitches, the triple injection mold assembly for manufacturing the same, and the method of molding a highly sensitive foam plastic product using the same will be described in detail.

First, when the control unit is driven, the anti-slip block unit 60 operates, the first hydraulic cylinder 62 operates, and the anti-slip block 64 is located above the core block 30.

The first material (X) is injected into the molding space 12 through the first nozzle 40, and injection molding is performed.

And, when the first hydraulic cylinder 62 operates and the anti-slip block 64 is removed from the upper part of the core block 30, the second hydraulic cylinder 72 operates, thereby removing the first core back block. (74) is located above the core block (30).

Then, the second material (Y) and the third material (Z) are injected into the molding space 12 through the second nozzle 50. At this time, the second material (Y) is injected first, and the third material (Z) is injected with a predetermined time difference, so that the third material (Z) is positioned between the second material (Y). Make it possible.

And, when the second hydraulic cylinder 72 operates and the first core back block 74 is removed, the third hydraulic cylinder 82 operates and the second core back block 84 moves. Located above the core block 30, a process of foaming the third material (Z) is performed.

As such, a person skilled in the art will understand that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical idea or essential features of the present invention.

Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description above, and the meaning and scope of the claims and their All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

10: Movable block 12: Molding space
14: buffer part 20: fixed block
22: Penetrating space 30: Core block
32: molding space 40: first nozzle
42: Nozzle 1-1 44: Nozzle 1-2
50: 2nd nozzle 52: 2-1 nozzle
54: No. 2-2 nozzle 60: Anti-sliding block part
62: First hydraulic cylinder 64: Anti-slip block
70: Block part for first core back 72: Second hydraulic cylinder
74: Block for the first core back 80: Block part for the second core back
82: Third hydraulic cylinder 84: Block for second core back
100: skeleton part 102: stitch part
200: skin part 300: light source
X: first material Y: second material
Z: third material

Claims (5)

A plate-shaped skeleton formed of transparent resin;
a skin portion located on the upper surface of the skeleton portion;
a stitch portion formed of several protrusions protruding from the skeleton portion;
Including,
A highly sensitive foam molded product for automobiles having stitches, wherein the stitch portion is formed to penetrate the skin portion and be exposed to the outside. According to clause 1,
A highly sensitive foam molded article for automobiles with stitches, characterized in that a light source is further added below the skeleton portion. According to clause 1,
A movable block located below;
A fixed block located above the movable block;
A core block that rises and falls along the space inside the fixed block and forms a molding space between the lower surface and the upper surface of the movable block;
a first nozzle for injecting a first material into the molding space;
a second nozzle for injecting a second material and a third material into the molding space;
an anti-slip block unit that, when located above the core block, limits the upward movement of the core block and limits the molding space of the first material;
A first core bag block unit that, when located above the core block, moves the core block upward a certain distance to adjust the input amounts of the second material and the third material;
Using a system including a second core bag block unit that, when located above the core block, moves the core block upward a certain distance to control the foaming amount of the second material and the third material,
The anti-slip block portion, the first core back block portion, and the second core back block portion are each provided above the core block and move horizontally at right angles along the fixing block. The anti-slip block portion, the first core back block portion, and Characterized in that only one of the second core back block parts is selectively located above the core block,
The anti-slip block of the anti-slip block portion is formed in a rectangular parallelepiped,
The first core back block of the first core back block part is formed as a rectangular parallelepiped, and an inclined surface that slopes upward toward the tip is formed on the lower surface, and a corresponding inclined surface is also formed on the upper surface of the fixed block,
The second core back block of the second core back block part is formed as a rectangular parallelepiped, and an inclined surface that slopes upward toward the tip is formed on the lower surface, and a corresponding inclined surface is also formed on the upper surface of the fixed block,
The anti-slip block portion, the first core back block portion, and the second core back block portion are located above the core block,
The anti-slip block portion is divided into a pair and located at the upper edge of the core block,
The first core back block portion is located between the anti-slip block portions,
The second core back block portion is divided into a pair and is respectively located between the first core back block portion and the anti-slip block portion,
The sliding direction of the anti-slip block portion and the first core back block portion is the same, and the sliding direction of the second core back block portion is different,
A first step in which the anti-slip block part moves and is positioned above the core block, and a first material is injected into the molding space through the first nozzle to perform injection molding of the skeleton part and the stitch part;
After the anti-slip block part is removed, the first core back block part moves and is located above the core block, and the second material and the third material are injected into the molding space through the second nozzle to inject the skin part. The second step is molding;
After the first core back block part is removed, the second core back block part moves to be positioned above the core block, and a third step in which the third material is foamed. Emotional foam molded products for automobiles. According to clause 3,
The first nozzle is divided into a 1-1 nozzle and a 1-2 nozzle, the 1-1 nozzle and the 1-2 nozzle are located on both sides of the molding space, and the second nozzle is the first nozzle. A highly sensitive foam molded product for automobiles having a stitch, characterized in that it is located between -1 nozzle and the 1-2 nozzle. According to clause 3,
The second nozzle is
A highly sensitive foam molded product for automobiles with stitches, wherein the third material is injected in the center and the second material is positioned at the top and bottom.