KR20230091039A - Insert press molding product and Insert press mold apparatus - Google Patents

Abstract

An insert press molded product of the present invention comprises: a plate part; a plurality of insert hardware which is inserted into the plate part; and an insert peripheral part which surrounds the outer peripheral surface of the insert hardware. The plate part covers the head of the insert hardware, and the insert peripheral part includes a groove in contact with the outer peripheral surface of the insert hardware.

Description

Insert press molding product and insert press mold apparatus

The present invention relates to an insert press molded article and an insert press mold apparatus.

Insert injection is an injection molding method that integrates heterogeneous or heterogeneous plastic or non-plastic parts (metal, wire, magnet, etc.) in a mold.

In particular, products in which metal and plastic are integrated form the mainstream, which combines the stiffness, conductivity, and surface treatment of metal with the electrical insulation, coloring, flexibility, rigidity, and processability of plastic to create products with very high added value. has the advantage of

The advantage of insert injection molding is that the advantages and disadvantages of each material are complemented by combining different materials, so that a reasonable part structure can be obtained, and there is no need to assemble separately, so the relative positioning accuracy is good and reliability without loosening or falling out. It has the advantage of being able to manufacture high-quality parts.

As for application fields, it is widely used to make parts for electric and electronic devices, automobiles, precision devices such as watches and cameras, office equipment, and toys.

On the other hand, SMC (Sheet Molding Compound) composite materials are widely used as automobile parts and construction material parts. In particular, the SMC composite material may have an integral structure in which insert hardware including bolts and nuts is inserted for fastening between parts.

It is very important not only to design the hardware insert structure using SMC composite material with appropriate strength, but also to have a mass-productive structure.

SMC molding uses a composite material containing fibers, and the longer the length of the fibers, the more difficult it is to mold, but the better the physical properties. The shorter the fibers, the easier the molding, but the weaker the physical properties. There are cases in which fibers of 10 mm or more, in particular, 20 mm or more must be used for specific applications, and if such fibers are used, molding is impossible with the general injection method.

Therefore, due to the nature of the SMC composite material, press molding is performed in which a lump of SMC (Sheet Molding Compound) is placed between molds and presses the insert hardware and the composite material together at a high pressure of several tons without injection.

In addition, due to the nature of the construction method, SMC goes through a process of pressing the upper mold with hot pressure after 'loading', which installs an insert subsidiary material on the lower mold and places the SMC lump on it at a specific location. There was no choice but to be a difference in the shape of the insert at the location. The insert in the unloaded position has a 'through shape' because the upper mold can also provide a pin that can fix the insert hardware in the upper mold, so the insert in the unloaded area has a 'through shape' and is designed to withstand several tons of pressure. It can be. On the other hand, the hardware of the 'loaded' area has no choice but to be a non-penetrating type because the upper mold cannot provide pins, and eventually depends on one pin of the lower mold when pressed with several tons of heat pressure. It was a rescue.

1 is a cross-sectional view showing a portion of a plate into which a through-type insert (a) and a buried insert (b) according to the prior art are inserted.

The through-type insert 21 is inserted so as to completely penetrate from the lower surface to the upper surface of the plate unit 10 . A center hole is formed at the center of the through-type insert 21 to which a fastening member such as a bolt may be fastened.

On the other hand, the non-penetrating insert, that is, the buried insert 22 is buried and molded so as to be disposed from the lower surface of the plate unit 10 to just below the upper surface. A center hole is also formed in the buried insert 22, but the center hole is formed so as not to penetrate the head of the buried insert 22.

In particular, in the case of a buried insert, there is a problem that the insert hardware is displaced or the pin fixing the insert hardware in the mold is broken by high-pressure pressing during press molding, resulting in damage to the mold.

Registered Patent No. 10-1021087

The present invention prevents the fixing pin from being damaged by fixing the inner circumferential surface of the insert hardware with an insert fixing pin and supporting the outer circumferential surface of the insert hardware with a support protrusion when insert press molding of the insert hardware is made of SMC (Sheet Molding Compound) composite material. It is an object of the present invention to provide an insert press mold device in which the insert hardware is stably fixed and a molded product molded accordingly.

An insert press molded product of the present invention for achieving the above object includes a plate portion; a plurality of insert hardware inserted into the plate portion; and an insert peripheral portion surrounding an outer circumferential surface of the insert hardware, wherein the plate portion covers a head portion of the insert hardware, and the insert peripheral portion includes a groove in contact with the outer circumferential surface of the insert hardware.

The groove may be a groove formed by an insert support protrusion protruding from an outer circumference of an insert fixing pin provided in an insert press mold to support an outer circumferential surface of the insert hardware.

A plurality of grooves may be formed at a predetermined interval at a lower end of the peripheral portion of the insert.

The groove may have a depth of 30 to 50% of a height of the periphery of the insert.

The groove may have a width of 60 to 120% of an outer diameter of the insert fixing pin.

The insert press molded article may be made of SMC (Sheet Molding Compound) composite material except for the insert hardware.

The groove may be formed to surround the insert hardware 360 degrees at a lower end of the peripheral portion of the insert.

The groove may be formed to a thickness of 20 to 60% of the peripheral thickness of the insert.

An insert press mold apparatus of the present invention includes a main body plate forming a plate portion of an insert press molded product; an insert periphery forming groove concavely formed in the main body plate to form a periphery of the insert hardware; an insert fixing pin that protrudes from the insert periphery forming groove and is inserted into the center hole of the insert hardware; and an insert support protrusion protruding from the insert periphery forming groove to support an outer circumferential surface of the insert hardware.

A plurality of the insert support protrusions may be formed at predetermined intervals on the bottom and side surfaces of the insert periphery forming groove.

The insert support protrusion may have a height of 30 to 50% of a depth of the insert periphery forming groove.

The insert support protrusion may have a width of 60 to 120% of an outer diameter of the insert fixing pin.

The insert periphery forming groove may further include a connecting rib forming groove connected to another insert peripheral forming groove and a reinforcing rib forming groove extending in a radial direction from the insert peripheral forming groove.

The material to be press-molded in the mold device may be a sheet molding compound (SMC) composite material.

According to the insert press molding and insert press mold apparatus of the present invention described above, when insert press molding of insert hardware with SMC (Sheet Molding Compound) composite material, the inner circumferential surface of the insert hardware is fixed with an insert fixing pin and the insert hardware with a support protrusion. By supporting the outer circumferential surface, the fixing pin can be prevented from being damaged and the insert hardware can be stably fixed.

1 is a cross-sectional view showing a portion of a plate into which a through-type insert (a) and a buried insert (b) according to the prior art are inserted.
2 is a perspective view showing an insert press molded article according to an embodiment of the present invention.
3 is a partial perspective view showing an insert hardware part in an insert press molded product according to an embodiment of the present invention.
4 is a cross-sectional view taken along line III-III of FIG. 3;
5 is a partial perspective view showing an insert hardware part in an insert press molded product according to another embodiment of the present invention.
6 is a perspective view showing an insert press mold apparatus according to an embodiment of the present invention.
FIG. 7 is a partial perspective view illustrating a portion of a groove for forming a periphery of an insert in FIG. 6 .
8 is a partial perspective view illustrating a state in which insert hardware is disposed in FIG. 7 .
9 is a partial cross-sectional view showing an insert press molded product and an insert hardware portion of a mold device.
10 is a partial plan view showing an insert hardware portion in an insert press molded product according to a modified example of the present invention.
11 is a partial cross-sectional view showing an insert press molded product and an insert hardware portion of a mold device in the embodiment of FIG. 5 .

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be exemplified and described in detail in the detailed description. However, it should be understood that this is not intended to limit the present invention to specific embodiments, and includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as 'include' or 'having' are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. At this time, it should be noted that in the accompanying drawings, the same components are indicated by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated.

Figure 2 is a perspective view showing an insert press molded product according to an embodiment of the present invention, Figure 3 is a partial perspective view showing an insert hardware portion in the insert press molded product according to an embodiment of the present invention, Figure 4 is III of FIG. It is a cross section cut along line III.

2 to 4, the insert press molded product 100 according to an embodiment of the present invention includes a plate portion 110, a plurality of insert hardware 120 press-molded on the lower surface of the plate portion, and inserts. It includes an insert periphery 130 surrounding the outer circumferential surface of the hardware.

The plate part 110 may serve to support, for example, a secondary battery or a fuel cell and fix it to a vehicle body. The plate unit 110 may be formed in various shapes according to design specifications, for example, may be formed in a rectangular shape. An opening may be formed in the plate unit 110 . By forming the opening in the plate unit 110, the weight of the stack frame can be reduced. When the plate portion 110 is press-molded, a difference in strength may occur due to different material flow between the central portion and the outer portion. According to the present invention, an opening is formed inside the plate portion 110 to reduce a difference in material flow during press molding and thus to have uniform strength.

A plurality of insert hardware 120 may be inserted into the plate unit 110 . A plurality of insert hardware 120 may be disposed at various locations according to required design specifications, and integrally formed with the plate unit 110 . Insert hardware 120 may be formed of a metal material, for example, may be formed of steel or aluminum alloy material. The insert hardware 120 may be a fastening member for mounting a secondary battery or a fuel cell on the plate part 110 or mounting the plate part 110 on a vehicle body, and may be, for example, a nut or a bolt. The insert hardware 120 may be formed in the shape of a cylinder or a hexagonal cylinder.

The insert hardware 120 may be insert press-molded to be exposed on the lower surface of the plate portion 110 . FIG. 2 is a view in which the plurality of insert hardware 120 disposed on the plate part 110 is arranged to face upward, and in this specification, the vertical direction indicates that the plurality of insert hardware 120 in the plate part 110 faces downward. It is described based on the original direction in which it is mounted so as to As shown in FIG. 4 , the upper end of the insert hardware 120 is covered by the plate portion 110, and the lower end of the insert hardware 120 may be press-formed to be exposed to the lower surface of the plate portion 110. there is.

The insert peripheral portion 130 may be formed to surround an outer circumferential surface of the insert hardware 120 . 4 shows a case where the insert hardware 120 is a nut. As shown in FIG. 4 , the insert hardware 120 may include a head portion 122, a hollow body portion 124, and a screw portion 126 formed on an inner circumferential surface of the body portion. The head portion 122 may be formed in a hexagonal shape so that the nut is not rotated by rotational force when the bolt is fastened to the nut. The body portion 124 may be integrally connected to the head portion 122 in the form of a circular pipe having a predetermined thickness and diameter. A screw thread is formed inside the body portion 124 so that a bolt can be fastened thereto. The insert peripheral portion 130 may protrude downward from the lower surface of the plate portion 110 to surround the outer circumferential surface of the body portion 124 of the insert hardware 120 .

In addition, the head part 122 is embedded in the plate part 110, and the upper surface of the head part 122 may be disposed at a higher position than the upper surface of the plate part 110. Accordingly, an insert cover portion 112 protruding upward from the upper surface of the plate portion 110 and covering the head portion 122 may be integrally formed above the head portion 122 .

As shown in FIG. 3 , the insert periphery 130 may include a groove 150 adjacent to an outer circumferential surface of the insert hardware 120 . The groove 150 may be a groove 150 formed by an insert support protrusion 240 provided in the insert press mold 200 (see FIGS. 6 and 7). The insert support protrusion 240 protrudes from the outer circumference of the insert periphery forming groove 220 to support the outer circumferential surface of the insert hardware 120 .

A plurality of grooves 150 may be formed at predetermined intervals at the lower end of the insert periphery 130 . Referring to FIG. 3 , the groove 150 has a plurality of grooves having a predetermined width (W) and depth (D) at the top of the insert peripheral portion 130, that is, around the top where the insert hardware 120 is exposed. They may be arranged at predetermined intervals. 3 shows an embodiment in which three grooves 150 are shown, and two to five grooves 150 may be formed depending on their width (W) and depth (D).

The groove 150 may have a depth D of 30 to 50% of the height of the insert periphery 130 . If the depth D of the groove 150 is too small, the supporting force of the insert supporting protrusion 240 may be weakened during press molding. The insert peripheral portion 130 is integrally molded and supported so as to surround the outer circumferential surface of the insert hardware 120. If the depth D of the groove 150 is too large, the insert peripheral portion 130 in the insert press molded product 100 may The supporting force supporting the 120 may be weakened.

The groove 150 may have a width W of 60 to 120% of the outer diameter of the insert fixing pin 230 . Since the insert fixing pin 230 is inserted into the center hole 125 formed on the inner circumferential surface of the body portion 124 of the insert hardware 120, the outer diameter of the insert fixing pin 230 is the screw portion 126 formed in the center hole 125 It may be formed equal to the inner diameter of or slightly smaller than the inner diameter. In other words, when a plurality of grooves 150 are formed, the grooves 150 may have a width W of 60 to 120% of the outer diameter of the insert fixing pin 230 . If the width (W) of the groove 150 is too small, the width of the insert supporting protrusion 240 may also be reduced, so that the supporting force of the insert supporting protrusion 240 may be weakened. Conversely, if the width W of the groove 150 is too large, the supporting force of the insert peripheral portion 130 in the insert press molded product 200 may be weakened by that much.

Meanwhile, as shown in FIG. 3 , a connection rib 140 connected to another insert periphery and a reinforcing rib 145 not connected to another insert periphery may be integrally formed on the outer circumferential surface of the insert periphery 130. In FIG. 2, the connecting rib 140 and the reinforcing rib 145 are omitted and briefly illustrated. The connecting rib 140 and the reinforcing rib 145 will be described later in relation to the insert press mold apparatus 200 .

The insert press molded product 100 may be made of an SMC composite material except for the insert hardware 120 . SMC (Sheet Molding Compound) composite material is a type of fiber-reinforced plastic composite material. A fiber reinforced plastics (FRP) composite material includes a sheet in which a matrix resin and reinforcing fibers are combined. For example, the sheet may include long fibers as the matrix resin and reinforcing fibers, or may include a fabric woven with continuous fibers as the matrix resin and reinforcing fibers. The fiber-reinforced plastic composite material may include a laminated sheet in which a plurality of such sheets are laminated.

In general, a sheet molding compound (SMC) is an intermediate material processed into a sheet by mixing a thermosetting resin and long fibers (2 to 50 mm), and refers to a fiber-reinforced plastic that is cured through a heat press. In the present invention, the sheet molding compound (SMC) is not limited in the length and type of fibers, and as an intermediate material processed into a sheet form, a fiber-reinforced plastic composite material that can be cured through a heat press is defined as SMC.

That is, in the present invention, the fiber-reinforced plastic composite material may be a sheet molding compound (SMC) that includes reinforcing fibers in a matrix resin and is cured through a heat press.

For example, in the present invention, a fiber-reinforced plastic composite material comprising reinforcing fibers in the form of a fabric woven into continuous fibers or continuous fibers oriented in one direction as reinforcing fibers may be made into an intermediate material in the form of a sheet. can be included

In addition, in the present invention, SMC is not limited by the type of fiber (glass fiber, carbon fiber, aramid fiber, nylon, polypropylene fiber, etc.).

SMC (Sheet Molding Compound) composite material is a mixture of glass fibers, fillers, catalysts, mold release materials, etc. in a resin material, and has excellent moldability, corrosion resistance and weather resistance. In particular, in the case of long fiber SMC, mechanical properties are superior to those of short fiber composite materials, and productivity is higher than that of continuous fiber composite materials. The resin material is a thermosetting resin and may include, for example, unsaturated polyester, epoxy, phenol, and the like. The resin material may be made of one type of thermosetting resin or a plurality of types of thermosetting resins.

According to the insert press molded product according to an embodiment of the present invention, as fixing the insert hardware 120 during insert press molding, by further comprising a plurality of insert support protrusions 240 in addition to the insert fixing pin 230, during press molding The insert hardware 120 may be firmly supported on the inner and outer circumferential surfaces by the insert fixing pin 230 and the plurality of insert supporting protrusions 240 .

5 is a partial perspective view showing an insert hardware part in an insert press molded product according to another embodiment of the present invention.

In this embodiment, the groove 150 may be formed to surround the insert hardware 120 360 degrees at the lower end of the insert periphery 130 . Referring to FIG. 11 , in this case, the radial thickness of the groove 150 may be formed up to about 50% of the inner side.

That is, referring to FIG. 11 , an insert support protrusion 240 may protrude in a circumferential ring shape at a radially inner side of the lower end of the insert periphery forming groove 220 . When the insert support protrusion 240 is formed in a ring shape covering the entire 360 degrees, the support force for supporting the outer circumferential surface of the insert hardware 120 may increase. In this case, since the outer circumferential surface of the insert hardware 120 comes into contact with the inner circumferential surface of the insert supporting protrusion 240 and is supported, it is necessary to precisely form the insert supporting protrusion 240 to have a small dimensional tolerance.

In addition, the insert support protrusion 240 may be formed to a thickness of 20 to 60% of the thickness of the peripheral portion 130 of the insert. In other words, the insert support protrusion 240 is formed to contact the outer circumferential surface of the insert hardware 120 , but may be formed to be spaced apart from the outer circumferential surface of the insert periphery forming groove 220 by a predetermined distance. It is preferable that the insert support protrusion 240 is formed to approximately half the thickness of the insert periphery 130 . If the radial thickness of the insert supporting protrusion 240 is too small, the strength of the insert supporting protrusion 240 itself is weakened, and thus there is a risk of breakage during press molding. Conversely, if the thickness of the insert supporting protrusion 240 in the radial direction is too large, the thickness of the peripheral portion 130 to be press-molded becomes too thin, and the molded article may be damaged.

In the following, the insert press mold apparatus 200 of the present invention will be described with reference to FIGS. 6 to 9.

6 is a perspective view showing an insert press mold apparatus according to an embodiment of the present invention, FIG. 7 is a partial perspective view showing a portion of an insert periphery forming groove in FIG. 6, and FIG. 8 shows a state in which insert hardware is arranged in FIG. 9 is a partial perspective view showing an insert press molded product and an insert hardware portion of a mold device.

The insert press mold apparatus 200 of the present invention is formed concavely in the main body plate 210 and the main body plate 210 forming the plate portion 110 of the insert press molded product 100, and the periphery of the insert hardware 120 The insert periphery forming groove 220 to form, the insert fixing pin 230 protruding from the insert periphery forming groove 220 and inserted into the center hole 125 of the insert hardware, and protruding from the insert peripheral forming groove 220. It includes an insert support protrusion 240 formed to support an outer circumferential surface of the insert hardware 120 .

The body plate 210 has a shape corresponding to the plate portion 110, and may have, for example, a rectangular shape.

The insert periphery forming groove 220 may be concavely formed in the body plate 210 to form the insert periphery 130 . The insert periphery forming groove 220 is formed to have a predetermined depth and size, and may be formed to gradually increase in diameter from the bottom to the top. In addition, lower and upper corners of the inner circumferential surface of the insert periphery forming groove 220 may be formed to be rounded, respectively. As a result, the molded insert periphery 130 can increase strength by reducing stress concentration.

As shown in FIG. 7 , the insert fixing pin 230 may be formed in a cylindrical shape at the center of the bottom of the insert periphery forming groove 220 . The insert fixing pin 230 may be integrally formed on the bottom of the insert periphery forming groove 220 . The height of the insert fixing pin 230 may be formed to a height slightly smaller than that of the center hole 125 according to the depth of the center hole 125 of the insert hardware 120 .

The insert support protrusion 240 may protrude from the insert periphery forming groove 220 to support the outer circumferential surface of the insert hardware 120 . A plurality of insert support protrusions 240 may be formed at predetermined intervals on the bottom and side surfaces of the insert periphery forming groove 220 . 7 shows that three insert support protrusions 240 are formed by way of example, and 2 to 5 may be formed at predetermined intervals from each other.

The insert support protrusion 240 may be formed to have a height of 30 to 50% of the depth of the insert periphery forming groove 220 . If the height of the insert support protrusion 240 is too small, the supporting force of the insert support protrusion 240 may be weakened during press molding. Conversely, if the height of the insert support protrusion 240 is too large, the supporting force of the insert peripheral portion 130 supporting the insert hardware 120 in the insert press molded product 100 may be weakened.

The insert support protrusion 240 may be formed to have a width of 60 to 120% of the outer diameter of the insert fixing pin 230 . An inner circumferential surface of the insert support protrusion 240 may be formed in a curved shape to contact and support the outer circumferential surface of the insert hardware 120 . If the width of the insert support protrusion 240 is too small, the support force of the insert support protrusion 240 may be weakened. Conversely, if the width of the insert support protrusion 240 is too large, the support force of the insert peripheral portion 130 in the insert press molded product 200 may be weakened by that much.

The insert peripheral forming groove 220 may further include a connecting rib forming groove 250 connected to other insert peripheral forming grooves 220 and a reinforcing rib forming groove 255 extending radially from the insert peripheral forming groove. there is. 7 is a partial perspective view showing that two insert peripheral forming grooves 220 are disposed adjacent to each other, and FIG. 8 is a state in which the insert hardware 120 is inserted and mounted into one of the two insert peripheral forming grooves 220. It is a partial perspective view showing .

The connecting rib forming groove 250 is formed so that one to four connecting rib forming grooves 250 communicate with the outer surface of one insert peripheral forming groove 220 according to the arrangement of the plurality of insert peripheral forming grooves 220. It can be. In FIG. 7 , it is illustratively shown that two connecting rib forming grooves 250 are formed to communicate with each other on the outer surface of one insert peripheral forming groove 220 . Accordingly, one or more connecting ribs 140 may be integrally formed in the insert peripheral portion 130 of the insert press molded product 100 .

0 to 3 reinforcing rib forming grooves 255 may be formed to communicate with the outer surface of the insert periphery forming groove 220 according to the number of the connecting rib forming grooves 250 . The connecting rib forming groove 250 is formed to have the same depth as the depth of the insert peripheral forming groove 220, but the reinforcing rib forming groove 255 has a smaller depth than the depth of the insert peripheral forming groove 220 and has a radially outer side. It may be formed to have a depth that gradually decreases as it goes to . Accordingly, the reinforcing rib 145 connected from the lower surface of the plate portion 110 of the insert press molded product 100 to the lower end of the peripheral portion 130 of the insert may be integrally formed.

The connecting rib 140 formed by the connecting rib forming groove 250 and the reinforcing rib 145 formed by the reinforcing rib forming groove 255 can reinforce the insert periphery 130 in the insert press molded product 100. there is.

The material to be press-molded in the insert press mold apparatus 200 of the present invention is preferably a SMC (Sheet Molding Compound) composite material. As described above, the SMC composite material is a type of fiber reinforced plastics (FRP) composite material, and includes a sheet in which a matrix resin and reinforcing fibers are composited. The sheet may include long fibers as the matrix resin and reinforcing fibers, or may include a fabric woven with continuous fibers as the matrix resin and reinforcing fibers. The fiber-reinforced plastic composite material may include a laminated sheet in which a plurality of such sheets are laminated. Sheet molding compound (SMC) is an intermediate material processed into a sheet form by mixing a thermosetting resin and long fibers (2 to 50 mm), and refers to a fiber-reinforced plastic that is cured through a heat press, but in the present invention Sheet molding compound (SMC) refers to a fiber-reinforced plastic composite material that is not limited in the length and type of fibers and is an intermediate material processed into a sheet form and can be cured through a heat press.

Since heat pressing is performed under a very high pressure of several tons during insert press molding, there is a concern that the insert fixing pin may be damaged during heat pressing. According to the insert press mold apparatus of the present invention, the insert fixing pin can be prevented from being damaged during insert press molding by forming the insert support protrusion 240 to support the outer circumferential surface of the insert hardware 120 .

10 is a partial plan view showing an insert hardware portion in an insert press molded product according to a modified example of the present invention.

As shown in FIG. 10 (a), four grooves 150 may be formed at predetermined intervals from each other in the peripheral portion 130 of the insert. In addition, as shown in FIG. 10 (b), five grooves 150 may be formed at a predetermined interval from each other in the insert periphery 130. In general, as the number of grooves 150 increases, their width and depth may decrease.

11 is a partial cross-sectional view showing an insert press molded product and an insert hardware portion of a mold device in the embodiment of FIG. 5 .

In this embodiment, the groove 150 is formed at the lower end of the insert peripheral portion 130 to surround the insert hardware 120 at 360 degrees. To this end, the insert support protrusion 240 surrounds the insert hardware 120 at 360 degrees. can be formed In this case, the thickness of the insert support protrusion 240 in the radial direction may be approximately half that of the peripheral portion 130 of the insert. In addition, the height of the insert support protrusion 240 is formed to have a height of 20 to 40% of the depth of the insert periphery forming groove 220, and may be formed slightly lower than in the embodiment in which a plurality of support protrusions are formed at predetermined intervals.

In the above, one embodiment of the present invention has been described, but those skilled in the art can add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. Various modifications and changes may be made to the present invention, which will also be included within the scope of the present invention.

10: plate part
21: Through-type insert
22: flush insert
100: insert press molded product
110: plate part
112: insert cover part
120: insert hardware
122: head
124: body part
125: center hole
126: screw part
130: insert periphery
140: connecting rib
145: reinforcement rib
150: groove
200: insert press mold device
210: body plate
220: insert periphery forming groove
230: insert fixing pin
240: insert support protrusion
250: connecting rib forming groove
255: reinforcing rib forming groove

Claims (14)

plate part;
a plurality of insert hardware inserted into the plate portion; and
Including an insert periphery surrounding the outer circumferential surface of the insert hardware,
The plate portion covers the head of the insert hardware,
The insert press-molded product comprising a groove in contact with the outer peripheral surface of the insert hardware. According to claim 1,
The groove is an insert press molded product, characterized in that the groove formed by the insert support protrusion protruding from the outer circumferential portion of the insert fixing pin provided in the insert press mold to support the outer circumferential surface of the insert hardware. According to claim 1,
The insert press molded product, characterized in that a plurality of grooves are formed at a predetermined interval at the lower end of the peripheral portion of the insert. According to claim 3,
The insert press molded product, characterized in that the groove has a depth of 30 to 50% of the height of the peripheral portion of the insert. According to claim 3,
The groove is an insert press molded product, characterized in that it has a width of 60 to 120% of the outer diameter of the insert fixing pin. According to any one of claims 1 to 5,
The insert press molded article is an insert press molded article, characterized in that made of SMC (Sheet Molding Compound) composite material except for the insert hardware. According to claim 6,
The insert press molded product, characterized in that the groove is formed to surround the insert hardware 360 degrees at the lower end of the peripheral portion of the insert. According to claim 7,
The groove is an insert press molded product, characterized in that formed in a thickness of 20 to 60% of the thickness of the peripheral portion of the insert. A body plate forming a plate portion of an insert press molded article;
an insert periphery forming groove concavely formed in the main body plate to form a periphery of the insert hardware;
an insert fixing pin that protrudes from the insert periphery forming groove and is inserted into the center hole of the insert hardware; and
An insert press mold apparatus comprising an insert support protrusion protruding from the insert periphery forming groove to support an outer circumferential surface of the insert hardware. According to claim 9,
The insert press mold apparatus, characterized in that a plurality of insert support protrusions are formed at predetermined intervals on the bottom and side surfaces of the insert periphery forming groove. According to claim 10,
The insert press mold device, characterized in that the insert support protrusion has a height of 30 to 50% of the depth of the insert periphery forming groove. According to claim 10,
The insert press mold device, characterized in that the insert support protrusion has a width of 60 to 120% of the outer diameter of the insert fixing pin. According to claim 10,
The insert press mold apparatus, characterized in that the insert press mold device further comprises a connecting rib forming groove connected to the other insert peripheral forming groove, and a reinforcing rib forming groove extending in a radial direction from the insert peripheral forming groove. According to any one of claims 9 to 13,
The material to be press molded in the mold device is an insert press mold device, characterized in that the SMC (Sheet Molding Compound) composite material.

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