KR20200035640A - Vacuum and resin supplying sub-device for resin transfer molding and RTM complex mold system with the same - Google Patents

Abstract

The present invention relates to an auxiliary device for vacuum and resin injection for resin transfer molding (RTM) process and an RTM complex mold system comprising the same for molding a vehicle body part. The auxiliary device for vacuum and resin injection for RTM process comprises: a base plate; a pair of supports vertically disposed to stand on the base plate and spaced apart from each other; a tank body filled with resin therein and forming a double wall structure; a resin tank having a tank flange formed to be larger than a width of the tank body and forming an upper end of the tank body and coupled between the pair of supports; a resin supply line coupled to a resin outlet formed at a lower end of the resin tank; a connecting member connected to the pair of supports and the resin tank; a tank cover coming into contact with the tank flange of the resin tank and shields an upper opening of the resin tank; a plurality of locking modules rotatably coupled to the resin tank and selectively locking the tank cover to the resin tank; an air compressor disposed at an outer side of the base plate; a first pressure control unit coupled to a lower part of any one of the pair of supports and primarily controlling a pressure of the air supplied from the air compressor; a second pressure control unit coupled to the support to be adjacent to the first pressure control unit and secondarily controlling a pressure of the air primarily controlled by the first pressure control unit; an air injection unit provided at one side of the tank cover to inject air into the resin tank; and a vacuum pressure forming unit provided at the other side of the tank cover. An object of the present invention is to provide the auxiliary device for vacuum and resin injection for resin transfer molding (RTM) process and the RTM complex mold system comprising the same for molding a vehicle body part, which may improve not only quality of molding but also a speed of molding process when molding a vehicle body part using a carbon fiber composite material.

Description

Vacuum and resin supply aid for RTM process and RTM complex mold system for molding of body parts containing the sameVacuum and resin supplying sub-device for resin transfer molding and RTM complex mold system with the same}

The present invention relates to a vacuum and resin injection auxiliary device for an RTM process and an RTM composite mold system for molding body parts containing the same, and more particularly, to improve molding quality in molding a body part using a carbon fiber composite material. The present invention relates to an RTM composite mold system for molding body parts including vacuum and resin injection aids for RTM processes, which can not only be made but also improve the molding process speed.

A composite material refers to a material having an effective function by combining two or more types of materials having different components or forms.

The components of the composite material include fibers, particles, lamina, and matrix, and composite materials composed of these elements are generally layered composite materials, particle-reinforced composite materials, fibers It can be classified as reinforced composite materials.

However, traditionally, composite material refers to a polymer composite material, and is used interchangeably with fiber-reinforced plastics and fiber-reinforced composite materials.

On the other hand, on the other hand, composite materials are recognized as having a somewhat advanced meaning than fiber reinforced plastics (FRP). In particular, composite materials that utilize high-performance reinforcing fibers such as carbon fibers are also classified and used as high-performance composite materials.

For reference, raw materials of fiber-reinforced plastics and composite materials can be divided into reinforcing fibers and matrix materials. Reinforcing materials of composite materials mainly use continuous fibers.

Historically, glass fiber is the oldest reinforcing fiber, but the frequency and importance of its use is that carbon fiber (graphite fiber or carbon fiber) is the best. In addition, aramid fibers represented by Kevlar are widely used, and less frequently used boron fibers and ceramic fibers such as silicon carbide are also used.

If the reinforcing fibers are load-bearing elements, the necessity of a base material is absolutely necessary to secure each of these fibers in place to achieve a structural shape. Also, when the shear load is applied, the base material mainly supports the load, so its mechanical properties are very important and have a decisive effect on the failure progress. In addition, since most fibers are stable against external elements (heat, chemicals, etc.), the resistance of the base material to these external elements is often important.

As the base material, epoxy resins are used in the latest composite materials, and unsaturated polyester resins still occupy a significant portion of general composite materials. For high temperature, phenol, polyimide resins and aluminum Metals such as are used, and thermoplastic resins are also used in recent years.

A composite material that can have various excellent material characteristics as well as high weight ratio strength and stiffness by efficient combination of materials effectively replaces existing materials by effectively utilizing its characteristics, and further plays a synergistic role in technological innovation. It is particularly noteworthy in that it is.

The use of composite materials has important advantages that lead to performance and productivity. For example, a composite material may be the only material capable of realizing a new design concept by controlling physical properties of the composite material with design flexibility. Therefore, plastic resin composite materials, metal composite materials, ceramic composite materials, and carbon / carbon composite materials that have been developed to date range from aerospace, automobiles, sports, industrial machinery, medical devices, military supplies, construction and civil engineering materials. It is applied.

On the other hand, there are various methods for molding the composite material. As a method for forming a composite material based on a polymer material, an autoclave molding method, a vacuum bag molding method, and a compression molding method , Filament Winding, SMC Molding Compound or BMC Molding Compound, RTM Molding Method, Resin Transfer Molding, Pultrusion, Heat Press Molding, etc. Methods include vacuum infiltration casting, liquid metal pressing, and the like.

As described above, the utilization of the carbon fiber composite material is gradually increasing. For example, in recent years, as the proportion of batteries for electric vehicles has gradually increased, body parts have been changed from conventional steel to carbon fiber composite materials, and other body parts are also being changed to carbon fiber composite materials.

Carbon fiber composite materials are widely used as alternative materials for steel because they can provide light weight and high strength (secure stability) of body parts, including body parts, as well as provide electromagnetic waves and heat resistance.

When manufacturing a vehicle body part using such a carbon fiber composite material, one of the above-described molding methods, RTM (resin transfer molding) molding, that is, a resin injection molding method may be used, and in this case, RTM for performing the RTM molding method A composite mold device for molding can be used.

At this time, in order to perform the RTM molding method, the composite mold apparatus for RTM molding must be made into a vacuum, and the resin must be injected into the composite mold apparatus for RTM molding in a vacuum state.

Korea Patent Office Application No. 20-2005-0036184 Korea Patent Office Application No. 20-2010-0000137 Korea Patent Office Application No. 20-2011-0011630 Korea Patent Office Application No. 20-2013-0004775

The object of the present invention is to improve the molding quality as well as to improve the molding process speed in molding a body part using a carbon fiber composite material, RTM process vacuum and resin injection auxiliary device and a vehicle body comprising the same It is to provide an RTM composite mold system for part molding.

The object, the base plate; A pair of support stands disposed vertically on the base plate and spaced apart from each other; A resin tank filled with resin therein, having a tank body forming a double wall structure, a tank flange formed larger than the width of the tank body and forming an upper end thereof, and a resin tank coupled between the pair of supports; A resin supply line coupled to a resin outlet formed at a lower end of the resin tank; A connecting member connected to the pair of supports and the resin tank; A tank cover in contact with the tank flange of the resin tank and shielding the upper opening of the resin tank; A plurality of locking modules rotatably coupled to the resin tank and selectively locking the tank cover to the resin tank; An air compressor disposed outside the base plate; A first pressure regulating unit coupled to a lower portion of any one of the pair of supporters and primarily adjusting the pressure of air supplied from the air compressor; A second pressure regulating unit coupled to the support adjacent to the first pressure regulating unit and secondarily regulating the pressure of air whose pressure is primarily adjusted by the first pressure regulating unit; An air injection unit provided on one side of the tank cover to inject air into the resin tank; And a vacuum pressure forming unit provided on the other side of the tank cover.

The tank body of the resin tank includes an outer housing; And an inner housing spaced from the outer housing and disposed radially inside.

On the other hand, the object is, RTM composite mold apparatus for forming a vehicle body parts for molding a vehicle body parts; And RTM process vacuum and resin injection for interacting with the RTM composite mold device for body part molding but maintaining the vacuum for the RTM composite mold device for body part molding or injecting resin into the RTM composite mold device for body part molding. It is also achieved by an RTM composite mold system for forming body parts, comprising an auxiliary device.

The RTM process vacuum and resin injection auxiliary device, the base plate; A plurality of movable wheels movably coupled to the lower end of the base plate; A pair of support stands disposed vertically on the base plate and spaced apart from each other; A resin tank filled with resin therein, having a tank body forming a double wall structure, a tank flange formed larger than the width of the tank body and forming an upper end thereof, and a resin tank coupled between the pair of supports; A resin supply line coupled to a resin outlet formed at a lower end of the resin tank; A connecting member connected to the pair of supports and the resin tank; A tank cover in contact with the tank flange of the resin tank and shielding the upper opening of the resin tank; A plurality of handles coupled to the tank cover; A window module provided on the tank cover and observing the inside of the resin tank; A plurality of locking modules rotatably coupled to the resin tank and selectively locking the tank cover to the resin tank; An air compressor disposed outside the base plate; A first pressure regulating unit coupled to a lower portion of any one of the pair of supporters and primarily adjusting the pressure of air supplied from the air compressor; A first line connected to the air compressor and the first pressure regulating unit; A second pressure regulating unit coupled to the support adjacent to the first pressure regulating unit and secondarily regulating the pressure of air whose pressure is primarily adjusted by the first pressure regulating unit; A second line connected to the first pressure regulating unit and the second pressure regulating unit; An air injection unit provided on one side of the tank cover to inject air into the resin tank; A pressure gauge provided in the air injection unit; A third line connected to the second pressure regulating unit and the air injection unit; And a vacuum pressure forming unit provided on the other side of the tank cover, wherein the tank body of the resin tank may include an outer housing and an inner housing spaced apart from the outer housing and disposed radially inside.

The RTM composite mold apparatus for forming body parts includes: a lower mold provided for forming the body parts, forming a lower convex portion with a convex center portion on a long side and a lower concave portion with a concave center portion on a short side; An upper concave portion and an upper convex portion respectively formed with the lower convex portion and the lower concave portion of the lower mold, wherein the vehicle body part is formed between the lower mold and the upper portion provided detachably with respect to the lower mold. mold; A lower mating block provided to protrude from a side wall of the long side of the lower mold but having a trapezoidal protruding shape that gradually decreases in width toward the upper mold side in the center; An upper mating block provided to protrude from a side wall of the long side of the upper mold, but provided with a trapezoidal groove-shaped mating portion that is mated with the trapezoidal protruding portion in the center; A lower supporting block having the same area as the lower mold and provided with the lower mold stacked under the lower mold; An upper supporting block having the same area as the upper mold and being stacked on the upper mold at an upper portion of the upper mold; A lower handle handle provided to protrude outward from the center of the lower supporting block; An upper handle handle provided to protrude outward from a center portion of the upper supporting block; A wedge block provided to protrude on the long side of the lower supporting block but gradually widened toward the center; The head portion is formed by a fitting portion of the block fitted into the wedge block, a handle bar formed to protrude from the head portion, a shaft portion connected to the head portion, and an end portion of the shaft portion, but coupled to the upper supporting block. A clamp unit for a hook having a rotating portion rotatably coupled to the hinge pin to be; A plurality of T-shaped stoppers which are detachably coupled to the lower supporting block but block any operation of the clamp unit for the hook; A lower dummy structure having a pair of lower bars and a lower bar connecting block connecting the pair of lower bars; An upper dummy structure having a pair of upper bars and a pair of upper bars connecting the pair of upper bars, and a pair of upper bars provided to protrude in pairs from the short side of the upper supporting block; A lower supporting base having a thickness narrower than 1/3 of the lower supporting block, but being layered on the lower supporting block; An upper supporting base having a thickness narrower than 1/3 of the upper supporting block, but being layered on the upper supporting block; A lower base plate having a larger area and thickness than the lower supporting base and layered on the lower supporting base to form a plurality of lower through holes; An upper base plate having a larger area and thickness than the upper supporting base and layered on the upper supporting base to form a plurality of upper through holes; A plurality of heating modules coupled to the lower mold, the upper mold, the lower supporting block and the upper supporting block; It is formed to be exposed to the upper base plate, and has a resin injection hole through which resin is injected from the vacuum and resin injection auxiliary device for the RTM process, and is provided in the upper base plate, the upper supporting base, the upper supporting block, and the upper mold. A resin injection portion formed over; A first resin flow line portion, a second resin flow line portion disposed in parallel with the first resin flow line portion and forming a line larger than the first resin flow line portion, and the first and second resin flow line portions It has a connecting line connecting portion and a plurality of resin discharging portions having more paths than the line connecting portion but formed on the second resin flow line portion to allow the resin to be discharged, and connected to the resin injection portion but impregnating the resin. A resin flow inducing unit for guiding the flow of the resin so that it is made well; A sealer forming an outer portion of the resin flow guide part; A pressure sensor that senses a pressure on the forming space between the lower mold and the upper mold; And a controller for controlling the degree of vacuum of the molding space between the lower mold and the upper mold based on the sensing signal of the pressure sensor, while controlling the injection amount and speed of the resin and the operation of the heating module. The lower mating block and the upper mating block are arranged in pairs on both sides of the lower mold and the upper mold, and the wedge block and the clamp unit for the hook are on both sides of the lower mold and the upper mold. In each pair, the clamp unit for the hook may be disposed on the outer side of the lower mating block and the upper mating block.

According to the present invention, the impregnation of the resin can be made better than before, and the clamping structure for vacuum is efficient, thereby improving the molding quality of the body parts.

1 is a block diagram of an RTM composite mold system for molding body parts according to an embodiment of the present invention.
FIG. 2 is a front view of a vacuum and resin injection auxiliary device for an RTM process applied to the RTM composite mold system for molding body parts of FIG. 1.
3 is a partial cross-sectional view of FIG. 2.
4 is a plan view of FIG. 2.
5 is a schematic plan view of a resin tank.
FIG. 6 is a perspective view of an RTM composite mold apparatus for molding body parts applied to the RTM composite mold system for molding body parts of FIG. 1.
7 is a view showing FIG. 6 from another angle.
8 is a plan view of FIG. 6.
9 is a side view of FIG. 8.
10 is a partially enlarged view of FIG. 9.
11 is a perspective view of a part of FIG. 6 removed.
FIG. 12 is a perspective view of a part of FIG. 11 removed.
13 is a plan view of FIG. 12.
14 is a control block diagram of an RTM composite mold apparatus for molding body parts according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

In this specification, this embodiment is provided to make the disclosure of the present invention complete, and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains. And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described in order to avoid obscuring the present invention.

The same reference numerals refer to the same components throughout the specification. In addition, the terms (mentioned) used in the present specification are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form also includes the plural form unless specifically stated in the phrase. In addition, components and actions (actions) referred to as 'include (or have)' do not exclude the presence or addition of one or more other components and actions.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains.

Also, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are defined.

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

1 is a block diagram of an RTM composite mold system for molding body parts according to an embodiment of the present invention, and FIG. 2 is a vacuum and resin injection auxiliary device for an RTM process applied to an RTM composite mold system for molding body parts of FIG. 1 Front view, FIG. 3 is a partial sectional view of FIG. 2, FIG. 4 is a plan view of FIG. 2, FIG. 5 is a schematic plan view of a resin tank, and FIG. 6 is a body part molding applied to the RTM composite mold system for car body part molding of FIG. 7 is a perspective view of an RTM composite mold apparatus for use, FIG. 7 is a view showing FIG. 6 from different angles, FIG. 8 is a plan view of FIG. 6, FIG. 9 is a side view of FIG. 8, FIG. 10 is a partially enlarged view of FIG. 9, and FIG. 11 is Fig. 6 is a perspective view of a part removed, Fig. 12 is a perspective view of a part of Fig. 11, Fig. 13 is a plan view of Fig. 12, and Fig. 14 is an RTM composite mold for forming a vehicle body part according to an embodiment of the present invention It is a control block diagram of the device.

Referring to these drawings, the present invention is to improve the molding quality as well as to improve the molding process speed in molding a body part using a carbon fiber composite material.

To this end, the RTM composite mold system for forming body parts according to an embodiment of the present invention includes an RTM process vacuum and resin injection auxiliary device 1 shown in FIGS. 1 to 5 and an RTM process vacuum and resin injection auxiliary. It may include an RTM composite mold apparatus 100 for molding the body parts shown in FIGS. 1 and 6 to 14 to form a body part by interacting with the device 1. In other words, as shown in FIG. 1, the RTM process vacuum and resin injection auxiliary device 1 and the RTM composite mold apparatus 100 for molding body parts are connected to each other to interact to mold the body parts using the carbon fiber composite material.

First, with reference to FIGS. 2 to 5, the vacuum and resin injection auxiliary device 1 for the RTM process will be described first.

The RTM process vacuum and resin injection auxiliary device 1 interacts with the RTM composite mold apparatus 100 for molding body parts, but maintains the RTM composite mold apparatus 100 for molding body parts in vacuum or RTM composite for molding body parts. It serves to inject resin into the mold apparatus 100.

The vacuum and resin injection auxiliary device 1 for the RTM process is mounted on the base plate 10 by the location of most parts or components, including the resin tank 30. Therefore, the base plate 10 is made of a metal having excellent rigidity.

A plurality of movable wheels 11 are movably coupled to the lower end of the base plate 10. The moving wheel 11 may be equipped with a braking means to stop the movement.

In fact, considering that the RTM composite mold apparatus 100 for molding a vehicle body part is fixedly installed as a heavy-weight structure, the vacuum and resin injection auxiliary device 1 for RTM process is a RTM composite mold apparatus for molding a vehicle body part. It is desirable to approach (100). Therefore, a plurality of moving wheels 11 may be provided at the lower end of the base plate 10 of the vacuum and resin injection auxiliary device 1 for the RTM process.

On the base plate 10, a pair of supports 20 which are disposed upright and spaced apart from each other is provided. The resin tank 30 is disposed between the supports 20. The resin tank 30 is suspendedly coupled to the supporters 20 via a connecting member 35 provided between the supporters 20.

The resin tank 30 includes a tank body 31 filled with resin therein to form a double wall structure, and a tank flange 33 formed to be larger than the width of the tank body 31 and forming an upper end thereof. .

At this time, the tank body 31 of the resin tank 30 may include an outer housing 31a and an inner housing 31b spaced apart from the outer housing 31a and disposed inside the radial direction. The resin is filled in the inner housing 31b.

By applying the tank body 31 in a double structure as in this embodiment, there is an advantage of maintaining a temperature-sensitive resin and a curing agent at an appropriate temperature.

A resin outlet 32 is formed at a lower end of the resin tank 30, and a flexible resin supply line 95 is coupled to the resin outlet 32. The end of the resin supply line 95 is connected to the RTM composite mold apparatus 100 for vehicle body part molding.

In the case of this embodiment, the resin has a structure in which the resin is discharged to the lower portion. Thus, the resin is discharged to the lower portion, so that the discharge is smooth, and the cleaning operation after the process also provides advantageous advantages.

A tank cover 40 that shields the upper opening of the resin tank 30 is coupled to the upper portion of the resin tank 30. The tank cover 40 covers the upper opening of the resin tank 30 in a state in contact with the tank flange 33 of the resin tank 30.

A plurality of locking modules 38 are rotatably coupled to the resin tank 30. Accordingly, when the tank cover 40 is in contact with the tank flange 33 of the resin tank 30, the locking modules 38 are rotated in the groove 33a region of the tank flange 33 to tank the resin tank 30. The cover 40 can be securely locked. Unlocking can be done in reverse order.

A plurality of handles 41 are coupled to the tank cover 40. The handling of the tank cover 40 may be facilitated by the plurality of handles 41.

And the tank cover 40 is provided with a window module (42). It is possible to observe the inside of the resin tank 30 due to the window module 42, whereby the proper amount and state of the resin can be checked in real time.

An air compressor 50 is disposed outside the base plate 10. In addition, a first pressure regulating unit 61 that primarily regulates the pressure of air supplied from the air compressor 50 is provided at a lower portion of any one of the pair of supporters 20, and a first pressure regulating unit is provided at the upper portion thereof. A second pressure regulating unit 62 is provided for regulating the pressure of the air whose pressure is primarily adjusted by 61. In addition, an air injection unit 70 for injecting air into the resin tank 30 is provided on one side of the tank cover 40. A pressure gauge 71 is installed in the air injection unit 70.

For the connection of these components, first to third lines 91 to 93 are provided. The first line 91 is an air line connected to the air compressor 50 and the first pressure regulating unit 61, and the second line 92 is the first pressure regulating unit 61 and the second pressure regulating unit ( 62), and the third line 93 is an air line connected to the second pressure regulating unit 62 and the air injection unit 70.

A vacuum pressure forming unit 80 is provided on the other side of the tank cover 40. The vacuum pressure forming unit 80 is also connected to the air compressor 50 and can be operated when maintaining the vacuum inside the RTM composite mold apparatus 100 for molding body parts.

With this configuration, after maintaining the inside of the RTM composite mold apparatus 100 for molding a vehicle body part through a vacuum pressure forming unit 80 in a vacuum, when the air compressor 50 is operated, air is first and second pressure. As the pressure is appropriately adjusted by the adjustment units 61 and 62, as a result, it is injected into the resin tank 30 through the air injection unit 70 through the first to third lines 91 to 93 in turn, The resin may be pressurized by the injected pressure, thereby increasing the injection speed of the resin.

In addition, by adjusting the air pressure in two stages, the resin injection pressure can be precisely adjusted, so that the RTM composite mold apparatus 100 for molding body parts can be controlled up to 10 atm, thereby reducing the production speed of the slow RTM process. It improves, and the quality of the resin can be improved by maintaining the proper temperature.

Next, with reference to FIGS. 6 to 14 to look at the RTM composite mold apparatus 100 for molding body parts.

The RTM composite mold apparatus 100 for forming body parts is a device for substantially forming a body part, the lower mold 110, the upper mold 120, the lower supporting block 130, the upper supporting block 140, and It may include a plurality of heating modules 175 coupled to them.

The lower mold 110 forms a place to mold the body parts together with the upper mold 120. The lower mold 110 forms a lower convex portion 111 with a convex center portion on the long side and a lower concave portion 112 with a concave center portion on the short side.

The upper mold 120 is formed with a vehicle body part between the lower mold 110, and the upper concave portion 121 and the lower convex portion 111 and the lower concave portion 112 of the lower mold 110, respectively. An upper convex portion 122 is provided. The upper mold 120 is provided detachably with respect to the lower mold 110.

The areas of the lower mold 110 and the upper mold 120 are substantially the same, and the lower convex portion 111 and the lower concave portion 112, and the upper concave portion 121 and the upper convex portion 122 are provided. As provided, the lower mold 110 and the upper mold 120 may form a vehicle body part in a state where they are molded together.

The lower mold block 110 and the upper mold block 125 are provided to better mold the lower mold 110 and the upper mold 120. In this embodiment, the lower mold block 115 and the upper mold block 125 may be disposed in pairs on both sides of the lower mold 110 and the upper mold 120, respectively.

The lower molding block 115 is a structure provided to protrude from the side wall of the long side of the lower mold 110 and has a trapezoidal protruding molding portion 115a whose center gradually decreases in width toward the upper mold 120. Is prepared.

And the upper mold block 125 is a structure provided to protrude from the side wall of the long side of the upper mold 120, the central portion of which is a trapezoidal groove type to be matched with the trapezoidal protruding mold portion 115a of the lower mold block 115 A molded portion 125a is provided.

The lower supporting block 130 forms a same area as the lower mold 110 and is a block-type structure in which the lower mold 110 is stacked under the lower mold 110. The lower supporting block 130 is provided with a lower supporting base 135 that is formed to have a thickness narrower than 1/3 of the lower supporting block 130, but is layered on the lower supporting block 130.

In addition, the upper supporting block 140 has the same area as the upper mold 120 and is a block structure provided to be stacked on the upper mold 120 at the upper portion of the upper mold 120. The upper supporting block 140 is provided with an upper supporting base 145 which is formed to have a thickness narrower than 1/3 by the upper supporting block 140 but is layered on the upper supporting block 140.

The lower supporting block 130 is provided with a lower handle handle 131 to protrude outward from its center, and an upper supporting handle 140 is provided with an upper supporting block 140 to protrude outward from the center.

The wedge block 133 is formed on the long side of the lower supporting block 130 to gradually widen toward the center. And through the wedge block 133, the lower mold 110, the upper mold 120, the lower supporting block 130 and the upper supporting block 140 to be fully integrated into one body clamp unit for the hook ( 150) is prepared.

The clamp unit 150 for the hook includes a head portion 152 in which a block fitting portion 151 is inserted into and coupled to the wedge block 133, and a handle rod 153 formed to protrude in the head portion 152. , Includes a shaft portion 154 connected to the head portion 152 and a rotating portion 156 that is rotatably coupled to a hinge pin 155 that forms an end portion of the shaft portion 154 and is coupled to the upper supporting block 140. do.

At this time, the wedge block 133 and the clamp unit 150 for the hanger are disposed in pairs on each side of both sides of the lower mold 110 and the upper mold 120. In addition, the clamp unit 150 for the hook may be disposed outside the lower molding block 115 and the upper molding block 125. Therefore, there is no interference phenomenon in operation.

The T-shaped stopper 158 is coupled to the lower supporting block 130. The T-shaped stopper 158 is detachably coupled to the lower supporting block 130, but serves to prevent any operation of the clamp unit 150 for the hook. The T-shaped stopper 158 may be used one per clamp unit 150 for the hanger.

Meanwhile, a plurality of heating modules 175 are coupled to the lower mold 110, the upper mold 120, the lower supporting block 130 and the upper supporting block 140. The heating module 175 is controlled to the temperature and operation by the controller 220 to be described later, but serves to cure the injected resin.

A lower dummy structure 161 and an upper dummy structure 165 are further provided in the RTM composite mold apparatus 100 for molding body parts according to the present embodiment.

The lower dummy structure 161 is a lower bar connecting block connecting a pair of lower bars 162 and a pair of lower bars 162 provided to protrude in pairs from the short side of the lower supporting block 130 ( 163). In addition, the upper dummy structure 165 has a pair of upper bars 166 and a pair of upper bars 166 that protrude in pairs from the short sides of the upper supporting block 140, and an upper bar connecting block connecting the pair of upper bars 166. (167).

A lower base plate 171 and an upper base plate 172 are provided at the lowermost and uppermost portions of the RTM composite mold apparatus 100 for molding body parts according to the present embodiment, respectively.

The lower base plate 171 has a larger area and thickness than the lower supporting base 135 and is a layered structure stacked on the lower supporting base 135. A plurality of lower through holes 171a are formed in the lower base plate 171.

In addition, the upper base plate 172 has a larger area and thickness than the upper supporting base 145, and is a structure that is layered on the upper supporting base 145. A plurality of upper through holes 172a are formed in the upper base plate 172.

On the other hand, the RTM composite mold apparatus 100 for molding body parts according to the present embodiment is equipped with a resin injection unit 180 and a resin flow induction unit 190.

The resin injection unit 180 includes a resin injection hole 181 formed to be exposed on the upper base plate 172, the upper base plate 172, the upper supporting base 145, the upper supporting block 140 and the upper It is formed over the mold 120. The resin injection hole 181 is connected to the vacuum and resin injection auxiliary device 1 for the RTM process to receive resin from the vacuum and resin injection auxiliary device 1 for the RTM process.

In addition, the resin flow inducing unit 190 is disposed in parallel with the first resin flow line unit 191 and the first resin flow line unit 191, but the second resin forming a line larger than the first resin flow line unit 191 The flow line portion 192, the line connection portion 193 connecting the first and second resin flow line portions 192, and having more paths than the line connection portion 193, but the second resin flow line portion 192 It is formed on the provided with a plurality of resin discharge portion 194 to discharge the resin, it is connected to the resin injection portion 180, but serves to induce the flow of the resin so that the resin is impregnated well. In other words, the resin flow inducing unit 190 forms a flow path of the resin. A sealer 197 is provided outside the resin flow guide unit 190 to form a boundary wall.

Meanwhile, the RTM composite mold apparatus according to the present invention may further include a pressure sensor 210 and a controller 220.

The pressure sensor 210 senses the pressure on the forming space between the lower mold 110 and the upper mold 120. And the controller 220 controls the degree of vacuum for the molding space between the lower mold 110 and the upper mold 130 based on the sensing signal of the pressure sensor 160, while the injection amount and speed of the resin, and the heating module ( 175).

The controller 220 performing such a role may include a central processing unit 221 (CPU), memory 222, MEMORY, and a support circuit 223 (SUPPORT CIRCUIT).

The central processing unit 221 controls the vacuum degree of the molding space between the lower mold 110 and the upper mold 130 on the basis of the sensing signal of the pressure sensor 160 in this embodiment, while the injection amount and speed of the resin And, it may be one of a variety of computer processors that can be applied industrially to control the operation of the heating module 175.

The memories 222 and MEMORY are connected to the central processing unit 221. The memory 222 may be installed in a local or remote location as a computer-readable recording medium, and is readily available, for example, random access memory (RAM), ROM, floppy disk, hard disk, or any digital storage form. It may be at least one memory.

The support circuit 223 (SUPPORT CIRCUIT) is combined with the central processing unit 221 to support the typical operation of the processor. The support circuit 223 may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.

In this embodiment, the controller 220 controls the vacuum degree of the molding space between the lower mold 110 and the upper mold 130 based on the sensing signal of the pressure sensor 160, while the injection amount and speed of the resin, and To control the operation of the heating module 175, such a series of processes may be stored in the memory 222. Typically, software routines may be stored in memory 222. Software routines may also be stored or executed by other central processing units (not shown).

Although the process according to the invention has been described as being executed by a software routine, it is also possible that at least some of the processes of the invention are performed by hardware. As such, the processes of the present invention may be implemented in software executed on a computer system, hardware such as an integrated circuit, or a combination of software and hardware.

As described above, in the present embodiment, as shown in FIG. 1, the vacuum and resin injection auxiliary device 1 for RTM process and the RTM composite mold device 100 for molding car body parts are connected to each other and interact with each other, using carbon fiber composite material. Body parts can be molded. Therefore, not only can the molding quality be improved, but also the molding process speed can be improved.

As described above, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

1: Vacuum and resin injection auxiliary device for RTM process
10: 10: base plate 11: moving wheel
20: support 30: resin tank
31: tank body 31a: outer housing
31b: inner housing 32: resin outlet
33: tank flange 35: connecting member
38: locking module 40: tank cover
41: handle 42: window module
50: air compressor 61: first pressure control unit
62: second pressure control unit 70: air injection unit
71: pressure gauge 80: vacuum pressure forming unit
91: first line 92: second line
93: third line 95: resin supply line
100: RTM composite mold device for molding body parts
110: lower mold 120: upper mold
130: lower supporting block 140: upper supporting block
180: resin injection unit 181: resin injection hole
190: resin flow induction unit 220: controller

Claims (5)

Base plate;
A pair of support stands disposed vertically on the base plate and spaced apart from each other;
A resin tank filled with resin therein, having a tank body forming a double wall structure, a tank flange formed larger than the width of the tank body and forming an upper end thereof, and a resin tank coupled between the pair of supports;
A resin supply line coupled to a resin outlet formed at a lower end of the resin tank;
A connecting member connected to the pair of supports and the resin tank;
A tank cover in contact with the tank flange of the resin tank and shielding the upper opening of the resin tank;
A plurality of locking modules rotatably coupled to the resin tank and selectively locking the tank cover to the resin tank;
An air compressor disposed outside the base plate;
A first pressure regulating unit coupled to a lower portion of any one of the pair of supporters and primarily adjusting the pressure of air supplied from the air compressor;
A second pressure regulating unit coupled to the support adjacent to the first pressure regulating unit and secondarily regulating the pressure of air whose pressure is primarily adjusted by the first pressure regulating unit;
An air injection unit provided on one side of the tank cover to inject air into the resin tank; And
Vacuum and resin injection aids for the RTM process, characterized in that it comprises a vacuum pressure forming unit provided on the other side of the tank cover.
According to claim 1,
The tank body of the resin tank,
Outer housing; And
Vacuum and resin injection aids for the RTM process, characterized in that it comprises an inner housing spaced from the outer housing and disposed radially inside.
An RTM composite mold apparatus for forming a vehicle body part to mold a vehicle body part; And
RTM process vacuum and resin injection aid for interacting with the RTM composite mold device for body part molding but maintaining the vacuum for the RTM composite mold device for body part molding or injecting resin into the RTM composite mold device for body part molding RTM composite mold system for molding body parts, comprising a device.
According to claim 3,
The RTM process vacuum and resin injection auxiliary device,
Base plate;
A plurality of movable wheels movably coupled to the lower end of the base plate;
A pair of support stands disposed vertically on the base plate and spaced apart from each other;
A resin tank filled with resin therein, having a tank body forming a double wall structure, a tank flange formed larger than the width of the tank body and forming an upper end thereof, and a resin tank coupled between the pair of supports;
A resin supply line coupled to a resin outlet formed at a lower end of the resin tank;
A connecting member connected to the pair of supports and the resin tank;
A tank cover in contact with the tank flange of the resin tank and shielding the upper opening of the resin tank;
A plurality of handles coupled to the tank cover;
A window module provided on the tank cover and observing the inside of the resin tank;
A plurality of locking modules rotatably coupled to the resin tank and selectively locking the tank cover to the resin tank;
An air compressor disposed outside the base plate;
A first pressure regulating unit coupled to a lower portion of any one of the pair of supporters and primarily adjusting the pressure of air supplied from the air compressor;
A first line connected to the air compressor and the first pressure regulating unit;
A second pressure regulating unit coupled to the support adjacent to the first pressure regulating unit and secondarily regulating the pressure of air whose pressure is primarily adjusted by the first pressure regulating unit;
A second line connected to the first pressure regulating unit and the second pressure regulating unit;
An air injection unit provided on one side of the tank cover to inject air into the resin tank;
A pressure gauge provided in the air injection unit;
A third line connected to the second pressure regulating unit and the air injection unit; And
It includes a vacuum pressure forming unit provided on the other side of the tank cover,
The tank body of the resin tank includes an outer housing and an inner housing spaced apart from the outer housing and disposed inside a radial direction.
According to claim 3,
The RTM composite mold apparatus for molding body parts,
A lower mold provided for forming the vehicle body part and forming a lower convex portion with a convex center portion on a long side and a concave lower concave portion with a short side side;
An upper concave portion and an upper convex portion respectively formed with the lower convex portion and the lower concave portion of the lower mold, wherein the vehicle body part is formed between the lower mold and the upper portion provided detachably with respect to the lower mold. mold;
A lower mating block provided to protrude from a side wall of the long side of the lower mold but having a trapezoidal protruding shape that gradually decreases in width toward the upper mold side in the center;
An upper mating block provided to protrude from a side wall of the long side of the upper mold, but provided with a trapezoidal groove-shaped mating portion that is mated with the trapezoidal protruding portion in the center;
A lower supporting block having the same area as the lower mold and provided with the lower mold stacked under the lower mold;
An upper supporting block having the same area as the upper mold and being stacked on the upper mold at an upper portion of the upper mold;
A lower handle handle provided to protrude outward from the center of the lower supporting block;
An upper handle handle provided to protrude outward from a center portion of the upper supporting block;
A wedge block provided to protrude on the long side of the lower supporting block but gradually widened toward the center;
A head portion formed by a block fitting portion coupled to and coupled to the wedge block, a handle bar formed to protrude from the head portion, a shaft portion connected to the head portion, and an end portion of the shaft portion, but coupled to the upper supporting block A clamp unit for a hook having a rotating portion rotatably coupled to the hinge pin to be;
A plurality of T-shaped stoppers which are detachably coupled to the lower supporting block but block any operation of the clamp unit for the hook;
A lower dummy structure having a pair of lower bars and a lower bar connecting block connecting the pair of lower bars;
An upper dummy structure having a pair of upper bars and a pair of upper bars connecting the pair of upper bars, and a pair of upper bars provided to protrude in pairs from the short side of the upper supporting block;
A lower supporting base having a thickness narrower than 1/3 of the lower supporting block, but being layered on the lower supporting block;
An upper supporting base having a thickness narrower than 1/3 of the upper supporting block, but being layered on the upper supporting block;
A lower base plate having a larger area and thickness than the lower supporting base and layered on the lower supporting base to form a plurality of lower through holes;
An upper base plate having a larger area and thickness than the upper supporting base and layered on the upper supporting base to form a plurality of upper through holes;
A plurality of heating modules coupled to the lower mold, the upper mold, the lower supporting block and the upper supporting block;
It is formed to be exposed to the upper base plate, and has a resin injection hole through which resin is injected from the vacuum and resin injection auxiliary device for the RTM process, and is provided in the upper base plate, the upper supporting base, the upper supporting block, and the upper mold. A resin injection portion formed over;
A first resin flow line portion, a second resin flow line portion disposed in parallel with the first resin flow line portion and forming a line larger than the first resin flow line portion, and the first and second resin flow line portions It has a connecting line connecting portion and a plurality of resin discharging portions having more paths than the line connecting portion but formed on the second resin flow line portion to allow the resin to be discharged. A resin flow inducing unit for guiding the flow of the resin so that it is made well;
A sealer forming an outer portion of the resin flow guide part;
A pressure sensor that senses a pressure on a forming space between the lower mold and the upper mold; And
On the basis of the sensing signal of the pressure sensor, while controlling the vacuum degree of the molding space between the lower mold and the upper mold, and includes a controller that controls the amount and speed of resin injection and the operation of the heating module,
The lower molding block and the upper molding block are respectively arranged in pairs on both sides of the lower mold and the upper mold, respectively.
The wedge block and the clamp unit for the hanger are arranged in pairs on each side of both sides of the lower mold and the upper mold,
The clamp unit for the hanger is an RTM composite mold apparatus for molding a body part, characterized in that it is disposed outside the lower molding block and the upper molding block.

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