KR20200029068A - Application device and Plastic Method for Steel Fiber Reinforced Composite - Google Patents

Abstract

The present invention relates to a method of forming a steel fiber-reinforced composite material using a robotic device, and more specifically, BMC (Bulk Molding Compound) is a method of forming a product by dividing a semi-solid fiber mixture into a molding frame to form a product. It relates to a method for forming a steel fiber-reinforced composite material using a robotic device that maintains a high strength of a finished molded article by applying a raw material along an inner shape of a molding frame to prevent a decrease in fluidity of a semi-solid body before molding.

Description

Application robot device and method for forming steel fiber reinforced composite using the same {Application device and Plastic Method for Steel Fiber Reinforced Composite}

The present invention relates to a coating robot apparatus and a method for forming a steel fiber-reinforced composite using the same, and more specifically, BMC (Blk Molding Compound) is a method of forming a product by dipping a fiber mixture of a semi-solid into a molding mold. By applying the raw material along the inner shape of the molding frame by using the device, the strength of the finished molded article is maintained high, but the coating robot device and the method for forming a steel fiber reinforced composite using the coating robot device that can prevent the decrease in fluidity of the semi-solid body before molding will be.

In general, BMC (Blk Molding Compound) is a thermosetting molding material that uses fibers (glass fibers) as a reinforcing agent in a matrix that uniformly mixes unsaturated polyester resin, curing agent, filler, and release agent. It is a material with excellent electrical performance, heat resistance, and water resistance.

The molding of the product using the BMC is compression molding to load the lower molding part of the lower mold of the compression mold with a built-in heating heater and pressurize it to the upper molding part of the upper mold with a built-in heating heater to form a molded product. This week has been achieved.

Conventionally, when making a molded product with such a BMC, the operator removes an appropriate amount of BMC by hand and transfers it to the molding frame. As a result, the efficiency of the operation is reduced, and a fixed amount of BMC is formed. Since it was difficult to supply uniformly, there was a problem in that the quality of the product was reduced, such as the occurrence of vulnerable parts, and the worker was exposed to harmful components mixed with BMC.

In order to solve this, in Korean Patent Registration No. 10-0998756, a hopper accepting BMC; A pressing device for pushing the BMC in the hopper downward; Communicate up and down with the hopper

A medium installed at a lower portion so as to be; A housing in which an opening communicating with the mediator is formed on an upper surface, and a rectangular discharge port is formed on one side; A transfer device for moving the BMC in the housing toward the discharge port; A carrier that receives and transports the BMC coming out of the outlet; A cutting gauge that cuts the BMC placed on the carrier into a specified length through the discharge port; It discloses a BMC auto-supply system consisting of, and in Korean Patent Registration No. 10-0932715, the upper core constituting the upper cavity forming the upper shape of the product while being equipped with a sprue bush is made of BMC material. It is installed to be maintained at the melting temperature, and is fixed to the upper mold fixed to the mold on the side where the nozzle of the injection molding machine for injecting BMC (BMC) material is installed, and to the rear mold to be detached from the upper mold of the injection molding machine, While the lower shape of the product while forming the lower core constituting the lower cavity that is maintained at the melting temperature of the BMC (BMC) material, the sprue bushing is installed in the upper center, and the sprue bushing The material of the BMC (BMC) injected through is guided to the gate portion or the sprue portion communicating with the runner portion and the upper cavity, and the upper cavity and the lower cavity. Further comprising a manifold intended to be supplied to the cavity, the manifold is a state of melting that is cured by reacting the material of the BMC (BMC) injected from the injection molding machine supplied to the upper cavity and the lower cavity, rather than a solid state. Also, it is disclosed that it is installed so as to be maintained at a temperature in which only flow occurs.

In general, however, the longer the length of the fiber, the higher the strength of the product, but the lower the fluidity, and the shorter the length of the fiber, the higher the fluidity, but the lower the strength of the product. As it forms a product, the case where the thin part penetrates only the solid material excluding the fiber, and the problem that the strength of the part weakens due to this, has not been solved.

Korean Registered Patent No. 10-0998756 (Nov. 30, 2010) Korean Registered Patent No. 10-0932715 (Dec. 10, 2009)

The present invention has been devised to solve the above problems, and a coating robot device capable of preventing the strength of a part of a molding from weakening by applying a raw material or a BMC along the inside shape of a molding frame using an application robot device. It is to provide a method for forming a steel fiber reinforced composite using the same.

Another object of the present invention is to provide a coating robot device capable of increasing the strength of a molded product by compressing and molding a SM or prepreg on top of a raw material or BMC, and a method for forming a steel fiber reinforced composite using the same.

In order to solve the above problems, the coating robot apparatus according to the present invention, the injection device unit for adjusting the amount of the raw material containing the fiber material or BMC according to the shape of the inside of the mold; A moving means unit that moves the sprayer so that the amount is adjusted and applied according to the shape of the inside of the molding frame; A raw material providing unit for providing raw material or BMC spraying through an injection device; A fixed support part for fixing and supporting the injection device part, the moving means part and the raw material providing part; And a control unit installed on one side of the fixed support portion to control the injection device portion, the moving means portion, and the raw material providing portion.

The method for forming a steel fiber-reinforced composite material using a coating robot apparatus according to the present invention comprises: a molding frame preparation step in which the upper molding part and the lower molding part are prepared so as to supply raw materials inside a molding frame composed of the upper molding part and the lower molding part; When the molding frame preparation step is completed, a raw material preparation step of preparing raw materials or BMC to be supplied into the molding frame; A raw material spray coating step of spraying and coating the inside of the molding frame by adjusting the amount of raw material or BMC containing the fiber material supplied along the inner shape of the molding frame using the coating robot apparatus; A compression molding step of molding the raw material or BMC supplied inside the molding frame by applying pressure to the upper portion of the lower molding portion by moving the upper molding portion; And a molding product discharging step of discharging the molded article on which the compression molding step is completed from the molding frame.

At this time, it is carried out after the raw material spray coating step, and after applying the raw material or BMC along the inner shape of the molding frame with the application robot device, the laminating step of stacking the SM or prepreg on the top of the raw material or BMC is further included. It is characterized by.

As can be clearly seen from the above description, the present invention has an advantage that it is possible to prevent the strength of the molded part from weakening by applying the raw material or the BMC along the inner shape of the molding frame by using an application robot apparatus.

In addition, the present invention has the advantage that the strength of the molded product can be increased by compressing and molding the SM or prepreg on top of the raw material or BMC.

1 is a flow chart of a typical BMC molding method.
Figure 2a is a view of a conventional mold forming step and the raw material supply step of the BMC molding method.
Figure 2b is a state of the compression molding step of the conventional BMC molding method.
Figure 3 is a flow chart of a coating robot apparatus and a steel fiber reinforced composite molding method using the same according to an embodiment of the present invention.
Figure 4a is an operational view of the molding robot preparation step and the raw material supply step according to the coating robot device according to an embodiment of the present invention and a method for forming a steel fiber reinforced composite using the same.
Figure 4b is an operational view of the compression molding step according to the coating robot apparatus according to an embodiment of the present invention and a method for forming a steel fiber reinforced composite using the same.
5 is a flow chart of a coating robot apparatus according to another embodiment of the present invention and a method for forming a steel fiber reinforced composite using the same.
6A is an operational view of a forming frame preparation step and a raw material supply step according to a coating robot apparatus according to another embodiment of the present invention and a steel fiber reinforced composite molding method using the same.
Figure 6b is an operational view of the lamination step according to the coating robot apparatus according to another embodiment of the present invention and a steel fiber reinforced composite molding method using the same.
Figure 6c is an operational view of the compression molding step according to the coating robot apparatus according to another embodiment of the present invention and a method for forming a steel fiber reinforced composite using the same.

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

Figure 1 is a flow chart of a typical BMC molding method, Figure 2a is a state of the molding frame preparation step and the raw material supply step of the conventional BMC molding method, Figure 2b is a state of the compression molding step of the conventional BMC molding method, Figure 3 is the present invention Flowchart of a coating robot apparatus according to an embodiment of the present invention and a method of forming a steel fiber reinforced composite using the same, FIG. 4A shows a molding frame preparation step and raw materials according to a coating robot apparatus according to an embodiment of the invention and a method of forming a steel fiber reinforced composite using the same Operational view of the supplying step, Figure 4b is an application robot device according to an embodiment of the present invention and the operational view of the compression molding step according to the steel fiber reinforced composite molding method using the same, Figure 5 is an application robot according to another embodiment of the present invention Flowchart of a device and a method of forming a steel fiber reinforced composite using the same, Figure 6a is a coating robot device according to another embodiment of the present invention and a method of forming a steel fiber reinforced composite using the same 6b is an operation view of the forming frame preparation step and the raw material supply step, FIG. 6b is an operation view of the lamination step according to the coating robot apparatus according to another embodiment of the present invention and a method of forming a steel fiber reinforced composite using the same, and FIG. 6c is It is an operational view of a compression molding step according to a coating robot apparatus according to another embodiment and a method for forming a steel fiber reinforced composite using the same.

(Refer to FIGS. 2 (a) and 2 (b)) In general, BMC 310 (BMC: Bulk Molding Compound) is a method of forming a product by dipping a semi-solid fiber mixture into a mold. In order to enhance the strength of the fiber material is cut and mixed in a semi-solid body with fluidity. The semi-solid body made as described above is flowed by the pressure applied from the inside of the molding frame 100 to form a molded product. In the case where the thickness of the molding frame 100 is thin, only the semi-solid body excluding fibers may penetrate. This is the strength of the thin part of the molded part is lowered.

In this regard, in general, when the length of the fiber material is long, the strength of the finished molded article is high, but the fluidity of the semi-solid body is lowered, so that only the semi-solid body excluding the fiber penetrates into the thin portion of the mold 100 or the gap. When the strength of the fiber is reduced and the length of the fibrous material is short, the fluidity of the semi-solid body is high, but the strength of the finished molded product is lowered.

In general, there are two ways to solve this problem.

The first is the improvement of fiber types. If the type of the fiber that is conventionally mixed with BMC 310 (BMC) is glass fiber, it is possible to increase product strength by using a high strength fiber such as carbon fiber. However, when carbon fiber is applied, the price of the product increases, and the bonding strength between the carbon fiber and the solid used should also be considered, so it is not easy to apply.

Second is the improvement of the fluidity of the semi-solid body. Adjusting the viscosity of the semi-solid body in which the fiber material is mixed makes it easier to move when the external pressure is applied, so that the fiber material can be mixed into the narrow gap of the molding frame 100. However, the effect of this method is not expected to be very high.

Therefore, in order to solve the above problems, the two methods are somewhat difficult to solve, as described with reference to FIGS. 3 (a) and 3 (b). The coating robot device according to an embodiment of the present invention and the method for forming a steel fiber reinforced composite using the same, so that the raw material 300 can be supplied inside the forming frame 100 consisting of the upper forming part 110 and the lower forming part 120 The upper molding part 110 and the lower molding part 120 are open and ready to form a molding frame (S1); When the molding frame preparation step (S1) is completed, the raw material preparation step (S2-1) for preparing the raw material 300 or the BMC 310 (BMC) to be supplied inside the molding frame 100; Using the coating robot device 200, the amount of the raw material 300 or the BMC 310 or BMC containing the fiber material supplied along the inner shape of the forming frame 100 is controlled to form the forming frame 100. Raw material spray coating step to spray and apply inside (S2-2); The compression molding step (S3) of forming the raw material 300 supplied inside the molding frame 100 or the BMC 310 (BMC) by applying pressure to the upper part of the lower molding part 120 by moving the upper forming part 110 ); And a molding product discharging step (S4) for discharging the molded article (not shown) in which the compression molding step (S1) is completed from the molding frame 100.

In order to solve the inverse relationship between the strength of the molded material according to the length of the fiber material and the fluidity of the semi-solid body, the BM 310 (BMC) is not put in and the pressure is applied, and the coating robot device 200 is applied. This can be solved by supplying raw material 300 or BMC 310 (BMC) to the molding frame 100 using.

To explain in more detail, it is possible to supply raw material 300 or BMC 310 (BMC) containing a fiber material inside the forming frame 100 composed of the upper forming part 110 and the lower forming part 120. The upper molding part 110 and the lower molding part 120 are opened so that the forming frame preparation step (S1) and the forming frame preparation step (S1) are completed. The raw material preparation step (S2-1), which is a step of preparing the raw material 300 or the BMC 310 (BMC) containing the material, and the inner form of the molding frame 100 using the coating robot apparatus 200 It is the step of spraying and spraying the material inside the molding frame 100 by adjusting the amount of the raw material 300 or the BMC 310 (BMC) containing the supplied fiber material according to the step S2-2. In this case, in the raw material spray coating step (S2-2), the raw material 300 containing the fiber material in the narrow gap (or gap) of the molding frame 100 is also used. BMC (310) (BMC) When the lump is pressed and pressed, the fiber material with low fluidity cannot move, so the molding frame 100 does not enter the narrow part (or crevice), so the strength is weakened. In order to solve the problem, the raw material 300 containing the fiber material or the BMC 310 (BMC) is applied directly to the narrow gap (or gap) of the forming frame 100 using the application robot apparatus 200. It is a step of a molding method that can increase the strength as the fiber material is located in a narrow gap (or gap) of the molding frame 100 even if the fiber material does not flow as it is applied, and the upper molding part 110 is moved. Compression molding step (S3) which is a step of compressing and molding the raw material 300 or the BMC 310 (BMC) supplied inside the molding frame 100 by applying pressure to the upper portion of the lower molding part 120, and When the compression molding step (S3) is completed, the finished molded product is transferred to the molding frame 100. Emitter made of a step of discharging the molding step (S4) for discharging, after the entire process is completed becomes repeatedly done in the same order again after the forming die preparing step (S1).

At this time, the coating robot apparatus 200 is applied by adjusting the amount of the raw material 300 or the BMC 310 (BMC) according to the inner shape of the molding frame 100, thereby making the raw material 300 or the BMC 310 As the (BMC) can reduce the distance to be moved, it is possible to prevent the strength of the finished molded article from being weakened in a thin portion or a gap portion of the molding frame 100.

In more detail, the raw material 300 or the raw material 300 is applied by directly applying the raw material 300 or the BMC 310 (BMC) along the inner shape of the forming frame 100 using the application robot apparatus 200. If the length of the fiber material mixed together with the BMC 310 (BMC) is maintained for a long time, the fluidity of the semi-solid body decreases, and the BMC 310 containing the fiber material in a thin portion or gap of the molding frame 100 ( The problem that BMC) was not able to be properly delivered can be solved as BMC (310) (BMC) does not need to flow.

To this end, the application robot apparatus 200 includes an injection device unit 210 for applying the raw material 300 or the BMC 310 (BMC) according to the internal shape of the molding frame 100, and the injection device is molded Frame (100) is made of a material (300) that provides a material (300) or a BMC (310) (BMC) to be sprayed through a moving means (220) and a spraying device that moves to be applied along the internal shape. Study 230, the injector unit 210, the moving means unit 220 and the fixed support unit 240 for fixing and supporting the raw material 300 providing unit 230, and the fixed support unit 240 on one side It consists of a control unit 250 for controlling the injection unit 210, the moving means unit 220 and the raw material 300 providing unit 230.

And in another embodiment of the present invention, in order to further increase the strength, the raw material 300 or the BMC 310 (BMC) is molded into the forming robot 100 by the application robot device 200 in the raw material 300 supply step (S2). ) Laminating step (S2-2) of laminating SMC 320 (SMC) or prepreg 330 (Prepreg) on the top after application along the inner shape.

Referring to Figures 5 to 6 (c) a little more specifically, as shown in one embodiment of the present invention, the molding frame preparation step (S1), raw material preparation step (S2-1), raw material spray coating step ( S2-2), in the method of forming a steel fiber reinforced composite consisting of a compression molding step (S3) and a molding material discharge step (S4), is performed after the raw material spray coating step (S2-2), and applies the coating robot device 200. After applying the raw material 300 or the BMC 310 (BMC) along the inner shape of the molding frame 100, the SM300 or the SM300 on the top of the raw material 300 or the BMC 310 (BMC) : Sheet Molding Compound) or prepreg (330) (Prepreg) is a method of producing a single molded product by laminating and compressing it. BMC (310) (BMC) more than BMC (310) (BMC) alone When the SM 320 or SMC or the prepreg 330 is stacked and compressed, the overall strength can be increased.

As described above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted by the appended claims. In addition, a person who has acquired ordinary knowledge in this technical field can, of course, perform various modifications without departing from the scope and spirit of the present invention.

S1: Molding frame preparation step
S2: Raw material supply stage
S2-1: Raw material preparation stage
S2-2: Raw material spray coating step
S2-3: Lamination step
S3: compression molding step
S4: Molding step
100: molding frame
110: upper forming part
120: lower molding part
200: application robot device
210: injection unit
220: mobile means
230: raw material providing unit
240: fixed support
250: control unit
300: raw material
310: BC
320: SMC
330: prepreg

Claims (3)

Injector unit for adjusting the amount of the raw material containing the fiber material or BMC according to the shape of the inside of the mold;
A moving means unit that moves the sprayer so that the amount is adjusted and applied according to the shape of the inside of the molding frame;
A raw material providing unit for providing raw material or BMC spraying through an injection device;
A fixed support part for fixing and supporting the injection device part, the moving means part and the raw material providing part; And
And a control unit installed on one side of the fixed support portion to control an injection device portion, a moving means portion, and a raw material providing portion. A molding frame preparation step in which the upper molding portion and the lower molding portion are opened so that raw materials can be supplied to the molding frame consisting of the upper molding portion and the lower molding portion;
When the molding frame preparation step is completed, a raw material preparation step of preparing raw materials or BMC to be supplied into the molding frame;
A raw material spray coating step of controlling the amount of raw material or BMC containing the fiber material supplied along the inner shape of the molding frame by using the coating robot apparatus of claim 1 and spraying it inside the molding frame;
A compression molding step of molding the raw material or BMC supplied inside the molding frame by applying pressure to the upper part of the lower molding part by moving the upper molding part; And
Steel fiber reinforced composite molding method using a coating robot device, characterized in that consisting of; molding material discharge step of discharging the molded article from the compression molding step is completed. According to claim 2,
It is carried out after the raw material spray application step,
Forming a steel fiber reinforced composite material using a coating robot device further comprising a laminating step of applying a raw material or BMC along the inside of the forming frame with the coating robot device and then stacking the SM or prepreg on the top of the material or BMC. Way.

Images