WO2011093546A1

WO2011093546A1 - Bead-stopper integrated head gasket and manufacturing method thereof

Info

Publication number: WO2011093546A1
Application number: PCT/KR2010/000666
Authority: WO
Inventors: 염교선; 이종선
Original assignee: 동아공업 주식회사
Priority date: 2010-01-28
Filing date: 2010-02-03
Publication date: 2011-08-04
Also published as: KR20110088248A

Abstract

The present invention relates to a bead-stopper integrated head gasket and a manufacturing method thereof, wherein a bead plate is formed with a shim plate stopper by carrying out laser-welding along the edge of the shim stopper plate in such a manner that the shim plate surface-contacts one surface of the bead plate to be integrated therewith, so that the shim stopper plate does not need any additional fixing type protrusions and the coating layers of the plate surface may be reduced from four steps to three steps. The invention provides the bead-stopper integrated head gasket and the manufacturing method thereof, and the bead-stopper integrated head gasket includes: a bead plate formed with board holes corresponding to bores and beads on a metal thin plate; and a shim stopper plate formed of a metal thin plate, wherein the shim stopper plate is formed in the same width along the rims of the board holes and surface-contacts one surface of the bead plate in the plane shape of the bead plate or in the curved shape of the bead. In the bead-stopper integrated head gasket, a welding deformation section to be joined with the bead plate is formed by laser-welding the shim stopper plate along the edge thereof so that the shim stopper plate and the bead plate are provided integrally.

Description

Bead-stopper integrated head gasket and its manufacturing method

The present invention relates to a gasket which is a sealing member of a hydraulic / pneumatic device, and more particularly, to a bead that simplifies a bead and stopper structure for sealing a fluid gap generated between a cylinder block and a cylinder head of an internal combustion engine. A stopper-integrated head gasket and a method of manufacturing the same.

In general, a gasket is a means for preventing leakage by being sandwiched between parts and mating surfaces or contact surfaces between parts.

For example, a special structure is applied to a cylinder of an internal combustion engine (engine) in order to prevent leakage of high pressure combustion gas in a combustion chamber inside a cylinder in a gasket provided between a cylinder block and a deck face of a cylinder head.

This is due to the high force generated between the cylinder block and the cylinder head due to the high pressure generated in the process of compression, expansion, explosion, exhaust, etc. inside the cylinder, so that a minute gap temporarily flows between the cylinder block and the cylinder head. Because of this, a structure for sealing this gap is required.

In general, such a fine gap in a compression ignition engine is known to be about 10 μm (= 0.01 mm) to 15 μm (= 0.015 mm).

If the high pressure combustion gas leaks through the minute gap, the combustion efficiency of the internal combustion engine is deteriorated, which should be prevented.

Therefore, there have been a lot of proposals for sealing minute gaps occurring in cylinders of internal combustion engines.

Figure 1 of the accompanying drawings is a schematic diagram showing the structure of a gasket for a conventional cylinder sealing.

As shown in FIG. 1, generally, the gasket 10 is a metal sheet and has a single layer or a multilayer structure. Each metal sheet includes a bore corresponding to a cylinder hole and a supply hole such as lubricating oil and cooling water, Rivets, bolt assembly holes, and the like are formed.

In addition, the bore side of the metal sheet is provided with a bore side structure as a special structure for sealing the minute gap generated in the fluid.

Structures for such bore-side sealing are well known in the art for bead structures and / or stoppers.

The bead is a structure in which a portion of the thin metal sheet is curved, and is compressive-restored by a constant elastic force during load compression and release.

As shown in FIGS. 1 and 2, the shim stopper 11 is positioned between each metal sheet, in particular, in a multi-layered gasket composed of several metal sheets, and is configured to further prevent combustion gas leakage along with beads. It is provided as.

When assembling the bead plate and the shim stopper plate, a separate caulking assembly protrusion 12 was required to fix them so that they could be firmly assembled at positions corresponding to each other.

However, the caulking assembly protrusion 12 generates cracks and the like by the engine vibration, which is an element of durability durability in the gasket design assembly structure.

In addition, as shown in FIG. 3, the upper and

lower bead plates

13 and 14 are disposed on the upper and lower surfaces of each of the upper and lower surfaces so as to avoid metal friction with the shim stopper plate 11 and to prevent inaccurate adhesion due to different surface roughness between the metals. The

rubber coating layers

13a, 13b, 14a, and 14b are formed.

However, since the bead plate forms a coating layer on both sides of the top and bottom, the bead plate has a four-layer coating layer, which causes a lot of coating formation time and material cost.

Therefore, there is still a need for a new gasket structure that can simplify the structure between the bead plate and the shim stopper plate to reduce manufacturing costs and facilitate the manufacturing process while maintaining the existing sealing effect.

Accordingly, an object of the present invention for solving the above problems is to provide a bead-stopper integrated head gasket and a method for manufacturing the same, in which a seam stopper plate is integrated into a bead plate by laser welding.

Another object of the present invention is to provide a bead-stopper integrated head gasket and a method of manufacturing the same, wherein the seam stopper plate is coated on the entire upper surface of one side of the shim stopper plate having an adhesive state by laser welding.

The object of the present invention according to the problem to be solved above, the bead plate to form a substrate hole and beads corresponding to the bore on the metal sheet; It is formed to have the same width along the substrate hole edge, and comprises a thin metal shim stopper plate that is adhered to one surface of the bead plate in the shape of the bead plate flat or curved of the bead plate, the seam stopper The welding deformation portion formed by laser welding along the edge of the shim stopper plate so that the plate and the bead plate are integrally formed is joined to the bead plate.

In addition, according to the present invention, both surfaces of the bead plate is coated with a coating layer, it is preferable that the coating layer is also applied to the upper surface of the shim stopper plate adhered to one surface of the bead plate.

In addition, according to the present invention, the bead plate is provided with a convex-shaped full bead (full bead) on one side and a half bead (half bead) beads having an inclined upward by the height of the convex bead on the other side, It is preferable that the shim stopper plate faces the convex full bead upper surface.

According to the present invention, the bead plate has a convex full bead on one side and a half bead having an inclined upward by the height of the convex full bead on the other side, the shim stopper plate is of the convex shape It is preferable to adhere to the bottom of the full bead.

In addition, according to the present invention, the bead plate has a concave full bead on one side and a half bead having a downward slope by the height of the concave bead on the other side, the shim stopper plate is the concave pull It is preferable to adhere to the bead upper surface.

According to the present invention, the bead plate has a concave full bead on one side and a half bead having a downward slope by the height of the concave full bead on the other side, the shim stopper plate is of the concave shape It is preferable to adhere to the bottom of the full bead.

The object of the present invention is also a pair of bead plates forming substrate holes and beads corresponding to bores on a thin metal plate; It is formed to have the same width along the edge of the substrate hole, positioned between the pair of bead plates, but is in contact with one surface of the bead plate of the one side in the plane of the bead plate or the curved shape of the bead The welding deformation portion formed by laser welding along an edge of the shim stopper plate is configured to include a shim stopper plate of a thin metal plate, so that the shim stopper plate and the bead plate on one side are integrally formed. It is also achieved by a bead-stopper integrated head gasket, characterized in that it is joined to the plate.

In addition, according to the present invention, the bead plate both sides of the one side is coated with a coating layer, the coating layer is also applied to the upper surface of the seam stopper plate adhered to one surface of the bead plate of the one side, the other side of the bead plate It is preferable that the coating layer is applied to only one surface of the seam stopper plate in the opposite direction.

In addition, according to the present invention, only one surface of the bead plate of one side is coated with a coating layer, the coating layer is also applied to the upper surface of the seam stopper plate adhered to one surface of the bead plate of one side, the other bead plate It is preferable that the coating layer is apply | coated on both surfaces.

It is also an object of the present invention to provide a method for manufacturing a bead-stopper integrated head gasket, comprising: processing an upper bead plate to form substrate holes and beads through a process of piercing and blanking on a thin metal sheet; A top and bottom coating step of coating layers coated on both sides of the upper bead plate; Processing the seam stopper plate to process the thin metal plate into the shape of the seam stopper plate through a piercing and blanking process; A lower bead plate processing step of forming a substrate hole through a process of piercing and blanking on a thin metal plate; A laser welding step of welding the laser along the edge of the shim stopper plate such that the shim stopper plate is integrated on the upper surface of the lower bead plate; A bead forming step of forming beads in a state in which the shim stopper plate is integrally attached to the lower bead plate; A lower surface coating step of applying a coating layer on the lower surface of the lower bead plate; And an assembling step of assembling the upper bead plate and the lower bead plate.

It is also an object of the present invention to provide a method for manufacturing a bead-stopper integrated head gasket, comprising: processing an upper bead plate to form substrate holes and beads through a process of piercing and blanking on a thin metal sheet; An upper surface coating step of applying a coating layer only to an upper surface of the upper bead plate; Processing the seam stopper plate to process the thin metal plate into the shape of the seam stopper plate through a piercing and blanking process; A lower bead plate processing step of forming a substrate hole through a process of piercing and blanking on a thin metal plate; A laser welding step of welding the laser along the edge of the shim stopper plate such that the shim stopper plate is integrated on the upper surface of the lower bead plate; A bead forming step of forming beads in a state in which the shim stopper plate is integrally attached to the lower bead plate; A lower surface coating step of applying a coating layer on upper and lower surfaces of the lower bead plate; And an assembling step of assembling the upper bead plate and the lower bead plate.

According to the bead-stopper integrated head gasket of the present invention and a method of manufacturing the same, the size of the shim stopper plate can be optimized by eliminating the caulking assembling to reduce the increase in the amount of material used and the loss rate due to the caulking assembling. Because of the exclusion of cracks that occur every time the engine vibration due to the negative effect of the durability is excluded.

In addition, since the shim stopper plate is integrally manufactured on the bead plate through laser welding without a fixed protrusion, no separate assembly is required, and laser welding is performed at an accurate position in advance, thereby simplifying the design structure or molding molding.

In addition, in the past, a rubber coating layer was formed on each of the bead plates between two bead plates and one shim stopper, but by integrating the bead plate and the shim stopper plate integrally, the rubber coating layer was optimized from four layers to three layers.

1 is a plan view showing a conventional head gasket structure,

2 is a plan view and a partially enlarged view of the shim stopper plate of FIG.

3 is a cross-sectional view taken along the line A-A in FIG.

4 is a plan view and a partially enlarged view of a bead-stopper integrated head gasket according to the first embodiment of the present invention;

5 is a plan view of the shim stopper plate of FIG.

6 is an overall flowchart of a method of manufacturing a bead-stopper integrated head gasket according to the first embodiment of the present invention;

7 is a cross-sectional view of the processing and coating state of the upper bead plate according to the flow chart of FIG.

8 is a cross-sectional view illustrating a laser welding process of the shim stopper plate and the lower bead plate according to the flowchart of FIG. 6;

9 is a cross-sectional view illustrating a bead forming process according to the flowchart of FIG. 6;

10 is a cross-sectional view of the lower surface of the lower bead plate according to the flow chart of FIG.

11 and 12 are assembled cross-sectional view of the upper, lower bead plate according to the flow chart of FIG.

13 is a cross-sectional view of the bead-stopper integrated head gasket according to the second embodiment of the present invention;

14 is a flow chart of a bead-stopper integrated head gasket manufacturing method according to a second embodiment of the present invention;

15 to 18 are cross-sectional views of the bead-stopper integrated head gasket according to the third to sixth embodiments of the present invention.

Hereinafter, embodiments of the bead-stopper integrated head gasket of the present invention and a manufacturing method thereof will be described in detail with reference to the accompanying drawings.

4 is a plan view and a partially enlarged view of a bead-stopper integrated head gasket according to the first embodiment of the present invention.

As shown in the figure, the head gasket 20 is positioned so that the substrate hole 22c corresponding to the bore of the bead plate 22, which is a thin metal plate, and the substrate hole 21a of the shim stopper plate 21 correspond to each other.

Since the bead plate and the shim stopper plate according to each embodiment of the present invention are both thin metal plates and each plate has the same shape in each embodiment, the plates to be described in the first embodiment will be described in the following embodiments. Therefore, repeated description thereof will be omitted.

In the first embodiment of the present invention, the bead plate 22 is composed of two upper and lower metal plates, and the seam stopper plate 21 is interposed between the upper and lower metal plates.

Although only the lower bead plate 22 of the upper and lower bead plates of the head gasket 20 is shown in FIG. 4, this is a lower bead plate integrated with the shim stopper plate 21 of the head gasket 20 by laser welding ( 22, and as shown in FIGS. 11 and 12, the head gasket 20 actually has an upper bead plate 27 forming a bead of the same and corresponding shape as the lower bead plate 22. FIG. It is configured to include.

In addition, the upper and lower bead plate is an expression for distinguishing the seam stopper plate integrally or not, and the upper bead plate may be an upper bead plate in accordance with the viewing angle of the bead plate that integrally forms the shim stopper plate 21. It is apparent that the lower bead plate 22 may also be used. For this reason, in the present specification, the "lower bead plate" is sometimes described as "bead plate" only for the convenience of description without distinguishing the lower part.

The lower bead plate 22 forms a concave or convex pull bead 22a between the outer periphery of the substrate hole 22c corresponding to the bore and the outer edge of the shim stopper plate 21.

The full bead 22a is a structure in which a portion of the thin metal plate is curved, and has a structure in which the full bead 22a is compressed-restored by a constant elastic force during load compression and release.

In addition, the lower bead plate 22 forms a half bead 22b having an upward or downward slope along its edge.

In addition, the lower bead plate 22 is coated with a bottom surface not interviewed with the shim stopper plate 21.

In addition, the upper bead plate is coated on both sides.

As shown in FIG. 5, the shim stopper plate 21 is formed such that a ring-shaped substrate hole 21a corresponding to the bore is connected in a line through processing such as piercing and blanking.

The shim stopper plate 21 is characterized in that the caulking assembling protrusions described in the prior art are not formed.

Particularly, a part of the metal of the shim stopper plate 21 is melted by laser welding and embedded in the inner surface of the lower bead plate 22 by a predetermined depth to form the weld deformation part 23.

Laser welding is a general metal joint operation in which a metal object or material is joined in a molten or semi-melt state by using a laser, and in the embodiments described below, the bead plate and the same laser welding process may be used. The shim stopper plate is integrated.

In addition, the laser welding of the present invention is a welding technique used for general metal welding, it is obvious that the modified shape of the welded site may have various deformation shapes as well as the cross-sectional shape shown by way of example in the drawings.

More specifically, the weld deformation part 23 of the shim stopper plate 21 has a weld line shape therebetween along the outer edge of the full bead 22a and the shim stopper plate 21.

Hereinafter, the order of the method of manufacturing the bead-stopper integrated head gasket according to the first embodiment of the present invention will be described in more detail with reference to the flowchart of FIG. 6 and the cross-sectional views of FIGS. 7 to 12.

In the first embodiment of the present invention, first, as shown in FIG. 6, the step S10 of processing the upper bead plate is performed.

In the above step, the upper bead plate 27 has a gasket shape for forming beads along a substrate hole corresponding to the bore and a substrate hole outer circumference through a process such as piercing and blanking.

As shown in FIG. 7, the upper bead plate 27 forms a full bead 27a on one side and a half bead 27b on the other side.

The one side is the outer circumferential direction of the substrate hole corresponding to the bore, the other side is the edge direction of the upper bead plate 27.

The full bead 27a is a convex curved 'U' shaped full bead, and the half bead 27b is a half bead having an upward inclination by the height of the full bead 27a.

In the state in which the upper bead plate 27 has been processed to have an outer shape of the head gasket, the upper and lower coating processes (S11) to be coated on both upper and lower surfaces are performed.

In this step, the coating smoothes the bead plate surface to apply a thin metal coating layers 28 and 29 to minimize the surface roughness (fine irregularities) of the metal itself and friction with other metals.

After performing the coating treatment step (S11), the processing step (S12) of the shim stopper plate 21 is performed.

In this step, the shim stopper plate 21 is subjected to a piercing and blanking process so as to have the shape of FIG. 5.

In addition, when the processing of the shim stopper plate is completed, the lower bead plate 22 to perform the lower bead plate 22 processing step (S13) to produce the same shape through the same process as the upper bead plate 27.

When the shape processing of the upper / lower bead plate and the seam stopper plate is completed as described above, as shown in FIG. 8, the laser welding step S14 for integrating the lower bead plate 22 and the seam stopper plate 21 is performed. Will perform.

In this step, the shim stopper plate 21 is placed on the upper surface of the lower bead plate 22 so as to face.

At this time, as shown in Figure 8, the substrate hole (23c) corresponding to the bore of the lower bead plate 22 and the substrate hole (21a) corresponding to the bore of the shim stopper plate 21 are laminated to match each other, The laser beam is irradiated onto the upper surface of the other side of the stopper plate 21.

The laser beam is irradiated along the outer circumference of the shim stopper plate 21 to form a welding deformation portion 23 in the form of a welding line.

The welding deformation portion 23 is melted or semi-melted by the laser beam, and the bead plate 22 positioned below by the pressure of the laser beam has a 'V' or 'U' shape groove ( 24) this pie.

Therefore, the welding deformation part 23 penetrates into the groove 24 and then hardens, so that the seam stopper plate 21 is integrally attached to the upper surface of the bead plate 22.

This is only intended to illustrate and explain the welding deformation portion and the groove that is deformed by the general welding process, it is not necessarily the welding deformation portion or 'V' shape or 'U' shape groove in the drawings.

After performing the laser welding step (S14), the bead forming step (S15) for forming a bead on the bead-seam stopper integrated plate is performed.

In this step, as shown in FIG. 9, the plate is placed on the press die 101 and a partial pressure is applied to the upper portion so that the bead is formed at the pressurized portion.

Thus, the bead-seam stopper integrated plate is formed such that the same type of seam stopper plate beads are stacked on the beads of the bead plate 22.

In addition, the bead plate 22 to form a bead in the outer position where the shim stopper plate 21 is not stacked.

After the bead is formed as described above, the lower surface of the bead plate 22 is subjected to a coating treatment step (S16).

In this step, a thin coating layer 26 is applied on the lower surface of the bead plate 22 as in the coating process step of the upper bead plate 27 as shown in FIG.

After the lower surface coating step (S16) is performed, the assembly step (S17) of manufacturing the head gasket 20 by assembling the upper bead plate 27 and the bead-seam stopper integrated plate is performed.

In this step, as shown in FIG. 11, the shim stopper plate 21 is positioned on the lower bead plate 22, and the full bead 27a of the upper bead plate 27 and the pull of the lower bead plate 22 are positioned. The bead 22a is assembled in a state as shown in FIG. 12 (cross section taken along line BB in FIG. 4) by aligning the beads 22a at positions corresponding to each other so that the bead-stopper integrated type according to the first embodiment of the present invention This completes the manufacturing process of the head gasket.

FIG. 13 is a view illustrating a bead-stopper integrated head gasket according to a second embodiment of the present invention, and will be described with a flowchart according to the manufacturing method of FIG. 14.

As shown in FIG. 13, the bead-stopper integrated head gasket according to the second embodiment of the present invention includes

bead plates

32 and 37 having the same upper and lower shapes and materials as described in the first embodiment. It consists of the shim stopper plate 31 which is integrally interviewed with the lower bead plate 32 on the lower bead plate 32.

In the second embodiment, only the upper surface of the upper bead plate 37 is coated with the coating layer 38, and the upper surface of the lower bead plate 32 is coated with the coating layers 35 and 36. It features.

Of course, the upper surface of the shim stopper plate 31 which is integrally interviewed by the upper surface of the lower bead plate 32 is also continuously applied to the coating layer 35 applied to the upper surface of the lower bead plate 32.

Flow chart for manufacturing the head gasket of the second embodiment, as shown in Figure 14, first to perform the processing step (S20) of the upper bead plate.

In this step, the upper bead plate 37 has a gasket shape for forming beads along the outer circumference of the substrate hole corresponding to the bore through a process such as piercing and blanking.

The upper bead plate 37 forms a full bead 37a on one side and a half bead 37b on the other side.

The one side is the outer circumferential direction of the substrate hole corresponding to the bore, the other side is the edge direction of the upper bead plate 37.

The full bead 37a is a convex curved 'U' shaped full bead, and the half bead 37b is a half bead having an upward slope by the height of the full bead 37a.

As described above, in the state in which the upper bead plate 37 is processed to have an outer shape of the head gasket, the upper surface coating step S21 is performed by coating only the upper surface.

The coating in this step allows the thin metal coating layer 38 to be applied only to the upper bead plate 37 top surface to smooth the bead plate surface to minimize the surface roughness (fine irregularities) of the metal itself and friction with other metals.

After performing the upper surface coating step (S21), the processing step (S22) of the shim stopper plate 31 is performed.

In this step, the shim stopper plate 31 is subjected to a piercing and blanking process, and when the machining is completed, the lower bead plate 32 is manufactured to have the same shape through the same process as the upper bead plate 37. 32) the machining step S23 is performed.

When the shape processing of the upper / lower bead plate and the shim stopper plate is completed as described above, the laser welding step S24 of integrating the lower bead plate 32 and the shim stopper plate 31 is performed.

In this step, the shim stopper plate 31 is placed on the upper surface of the lower bead plate 32.

At this time, the substrate hole corresponding to the bore of the lower bead plate 32 and the substrate hole corresponding to the bore of the shim stopper plate 31 are laminated so as to coincide with each other, and then a laser beam is formed on the upper surface of the other side of the shim stopper plate 31. Will be investigated.

The laser beam is irradiated along the outer circumference of the shim stopper plate 31 to form a welding deformation portion 33 in the form of a welding line.

The welding deformation portion 33 is melted or semi-melted by the laser beam, and the bead plate 32 positioned below by the pressure of the laser beam has a 'V' or 'U' shape groove ( 34) this pie.

Therefore, the welding deformation part 33 penetrates into the groove 34 and then hardens, so that the seam stopper plate 31 is integrally attached to the upper surface of the bead plate 32.

After performing the laser welding step (S24), the bead forming step (S25) for forming a bead on the bead-seam stopper integrated plate is performed.

Thus, the bead-seam stopper integrated plate is formed with a shim stopper plate bead having the same shape as the full bead 32a on the full bead 32a of the bead plate 32.

In addition, the bead plate 32 to form a half bead 32b in the outer position where the shim stopper plate 31 is not stacked.

After forming the beads (32a, 32b) as described above, the upper and lower surface coating step (S26) to be coated on the upper and lower surfaces of the bead plate 32 is performed.

In this step, the thin coating layer 36 is applied on the upper and lower surfaces of the bead plate 32 in the same manner as in the coating process on the upper bead plate 37.

At this time, the coating layer 35 applied to the upper surface of the lower bead plate 32 is continuously applied to the upper surface of the shim stopper plate 31 which is integrally interviewed by the upper surface of the lower bead plate 32.

After performing the upper and lower coating process step (S26), the assembly step (S27) for manufacturing the head gasket by assembling the upper bead plate 37 and the bead-seam stopper integrated plate is performed.

In this step, the shim stopper plate 31 is positioned on the lower bead plate 32, and the full bead 37a of the upper bead plate 37 and the full bead 32a of the lower bead plate 32 correspond to each other. Alignment to the position to complete the manufacturing process of the bead-stopper integrated head gasket according to the second embodiment of the present invention.

15 to 18 show cross-sectional views of the bead-stopper integrated head gaskets according to the third to sixth embodiments, respectively, and are different from the first and second embodiments, which are constituted by a pair of upper and lower bead plates. Otherwise it comprises only one bead plate.

15 consists of one bead plate 42 and a shim stopper plate 41.

The bead plate 42 is formed with a convex pull bead 42a on one side, and is composed of a half bead 42b having an upward inclination by the height of the full bead 42a on the other side.

At this time, the one side is the outer circumferential direction of the substrate hole corresponding to the bore and the other side is the edge direction of the bead plate 42.

The shim stopper plate 41 is stacked on the bead plate 42 so that the substrate hole corresponding to the bore of the bead plate 42 and the substrate hole of the shim stopper plate 41 are aligned. The other side and the upper portion of the bead plate 42 has a bonding state through laser welding.

At this time, the other end of the shim stopper plate 41 is located between the beads and the beads.

That is, the bead plate 42 is formed with a 'U' or 'V' shaped groove 44 by the pressure of the laser beam, the seam stopper plate 41 of the molten or semi-melted state into the groove 44 The weld deformation portion 43 of the penetration penetrates into the same shape as the groove 44.

As a result, a weld line is formed on the surface of the shim stopper plate 41 along the outer periphery of the substrate hole corresponding to the bore, in which the weld deformation 43 is pitted as much as the welding deformation portion 43 penetrates the groove 44.

In addition, since the shim stopper plate 41 is integrally faced on the bead plate 42, a bead having the same shape as the full bead 42a is formed.

The bead plate 42 is coated on the upper and lower surfaces, respectively, coating layers 45 and 46, in particular the coating layer 45 is coated on the upper surface is continuously applied to the upper surface of the shim stopper plate 41.

16 consists of one bead plate 52 and a shim stopper plate 51.

The bead plate 52 forms a concave full bead 52a on one side, and is composed of a half bead 52b having a downward inclination by the height of the full bead 52a on the other side.

At this time, the one side is the outer peripheral direction of the substrate hole corresponding to the bore and the other side is the rim direction of the bead plate 52.

The shim stopper plate 51 is stacked on the bead plate 52 so that the substrate hole of the bead plate 52 and the substrate hole of the shim stopper plate 51 coincide with each other. The upper portion of the plate 52 is in a bonded state through laser welding.

At this time, the other end of the shim stopper plate 51 is located between the beads and the beads.

That is, the bead plate 52 is formed with a 'U' or 'V' shaped groove 54 by the pressure of the laser beam, the seam stopper plate 51 of the molten or semi-melted state into the groove 54 The welding deformation portion 53 of the penetration penetrates into the same shape as the groove 54.

As a result, a weld line is formed on the surface of the shim stopper plate 51 along the outer periphery of the substrate hole corresponding to the bore, in which the weld deformation 53 is indented by the penetration of the welding deformation portion 53.

In addition, since the shim stopper plate 51 is integrally faced on the bead plate 52, a bead having the same shape as the full bead 52a is formed.

The bead plate 52 is coated on the upper and lower surfaces, respectively, coating layers 55 and 56, in particular the coating layer 55 is coated on the upper surface is continuously applied to the upper surface of the shim stopper plate 51.

17 consists of one bead plate 62 and a shim stopper plate 61.

The bead plate 62 is formed with a convex pull bead 62a on one side, and is composed of a half bead 62b having an upward slope on the other side by the height of the full bead 62a.

At this time, the one side is the outer circumferential direction of the substrate hole corresponding to the bore and the other side is the rim direction of the bead plate 62.

The shim stopper plate 61 adheres to the lower surface of the bead plate 62 so that the substrate hole of the bead plate 62 and the substrate hole of the shim stopper plate 61 coincide with each other. The lower part of the plate 62 will have a bonded state through laser welding.

At this time, the other end of the shim stopper plate 61 is located between the beads and the beads.

That is, the bead plate 62 is formed with a 'U' or 'V' shaped groove 64 by the pressure of the laser beam, the seam stopper plate 61 of the molten or semi-melted state into the groove 64 The welding deformation portion 63 of the penetration penetrates into the same shape as the groove 64 shape.

As a result, weld seams are formed along the outer circumference of the substrate hole corresponding to the bore on the lower surface of the shim stopper plate 61 as the welding deformation portion 63 penetrates into the groove 64.

In addition, since the shim stopper plate 61 is integrally faced with the lower portion of the bead plate 62, the seam stopper plate 61 forms a bead having the same shape as the full bead 62a.

The bead plate 62 is coated on the upper and lower surfaces, respectively, coating layers 65 and 66, in particular, the coating layer 66 to be coated on the lower surface is continuously applied to the upper surface of the shim stopper plate 61.

18 is composed of one bead plate 72 and a shim stopper plate 71.

The bead plate 72 forms a concave full bead 72a on one side, and is composed of a half bead 72b having a downward inclination by the height of the full bead 72a on the other side.

At this time, the one side is the outer peripheral direction of the substrate hole corresponding to the bore and the other side is the edge direction of the bead plate 72.

The seam stopper plate 71 is stacked on the lower surface of the bead plate 72 so that the substrate hole of the bead plate 72 and the substrate hole of the seam stopper plate 71 are aligned. The lower part of the plate 72 will have a bonding state through laser welding.

At this time, the other end of the shim stopper plate 71 is located between the beads and the beads.

That is, the bead plate 72 is formed with a 'U' or 'V' shaped groove 24 by the pressure of the laser beam, the seam stopper plate 71 of the molten or semi-melted state into the groove 74 The weld deformation portion 73 of the penetration penetrates into the same shape as the groove 74.

As a result, a weld line is formed on the surface of the shim stopper plate 71 along the outer periphery of the substrate hole corresponding to the bore, in which the welding deformation portion dents as the penetration of the welding deformation portion 73 penetrates the groove 74.

In addition, since the shim stopper plate 71 is integrally faced with the lower surface of the bead plate 72, a bead having the same shape as the full bead 72a is formed.

The bead plate 72 is coated on the upper and lower surfaces, respectively, coating layers 75 and 76, in particular the coating layer 76 is coated on the lower surface is continuously applied to the lower surface of the shim stopper plate 71.

[부호의 설명][Description of the code]

21, 31, 41, 51, 61, 71: seam stopper plate

22, 27, 32, 37, 42, 52, 62, 72: bead plate

23, 33, 43, 53, 63, 73: weld deformation

24, 34, 44, 54, 64, 74: home

Claims

A bead plate that forms substrate holes and beads corresponding to bores on the thin metal plate;

It is formed to have the same width along the substrate hole edge, and comprises a thin metal shim stopper plate that is adhered to one surface of the bead plate in the shape of the bead plate or the curved shape of the bead plate,

A bead-stopper integrated head gasket, wherein a weld deformation portion formed by laser welding along an edge of the shim stopper plate is joined to the bead plate such that the shim stopper plate and the bead plate are integrally provided.
The method of claim 1,

Both surfaces of the bead plate is coated with a coating layer,

A bead-stopper integrated head gasket, wherein a coating layer is applied to an upper surface of the shim stopper plate that is attached to one surface of the bead plate.
The method of claim 1,

The bead plate has a convex-shaped full bead on one side and a half bead having an upward slope by the convex bead height on the other side, and the shim stopper plate is faced to the convex full bead upper surface Bead-stopper integrated head gasket, characterized in that.
The method of claim 1,

The bead plate has a convex-shaped full bead on one side and a half bead having an upward slope by the convex bead height on the other side, and the shim stopper plate is faced to the convex full bead bottom surface. Bead-stopper integrated head gasket, characterized in that.
The method of claim 1,

The bead plate has a concave full bead on one side and a half bead having a downward inclination by the concave bead height on the other side, and the shim stopper plate is attached to the concave full bead upper surface. Bead-stopper integrated head gasket, characterized in that.
The method of claim 1,

The bead plate has a concave full bead on one side and a half bead having a downward inclination by the concave bead height on the other side, and the shim stopper plate faces the concave full bead bottom surface. Bead-stopper integrated head gasket, characterized in that.
A pair of bead plates forming substrate holes and beads corresponding to bores on the thin metal plate;

It is formed to have the same width along the edge of the substrate hole, and positioned between the pair of bead plates, but is in contact with one surface of the bead plate of the one side in the plane of the bead plate or the curved shape of the bead It consists of a seam stopper plate of metal lamination,

A bead stopper, characterized in that the weld deformation formed by the laser welding along the edge of the seam stopper plate to be integrally provided with the seam stopper plate and the bead plate of the one side and the bead plate of the one side. Integral head gasket.
The method of claim 7, wherein

Both side of the bead plate is coated with a coating layer,

The coating layer is also applied to the upper surface of the shim stopper plate that is adhered to one surface of the bead plate on one side, the other side of the bead plate is a bead characterized in that the coating layer is applied only on one surface in the opposite direction to the shim stopper plate -Head gasket with integrated stopper.
The method of claim 7, wherein

Only one surface of the bead plate of one side is coated with a coating layer,

A bead-stopper integrated head gasket, wherein a coating layer is applied to an upper surface of the shim stopper plate on one side of the bead plate on one side, and a coating layer is coated on both sides of the bead plate on the other side.
A method of manufacturing a bead-stopper integrated head gasket,

Machining step (S10) of the upper bead plate to form substrate holes and beads through a process of piercing and blanking on the thin metal plate;

Upper and lower coating step (S11) for applying a coating layer on both sides of the upper bead plate;

A machining step (S12) of the shim stopper plate for processing the thin metal plate into the shape of the shim stopper plate through a piercing and blanking process;

A lower bead plate processing step (S13) for forming a substrate hole through a process of piercing and blanking on a thin metal plate;

A laser welding step (S14) of welding the laser along the edge of the shim stopper plate such that the shim stopper plate is integrated on the upper surface of the lower bead plate;

A bead forming step (S15) of forming beads in a state where the shim stopper plate is integrally attached to the lower bead plate;

A lower surface coating step of applying a coating layer on the lower surface of the lower bead plate (S16); And

And a step (S17) of assembling the upper bead plate and the lower bead plate.
A method of manufacturing a bead-stopper integrated head gasket,

Machining the upper bead plate to form substrate holes and beads through a process of piercing and blanking the thin metal plate (S20);

An upper surface coating step (S21) of applying a coating layer only on an upper surface of the upper bead plate;

A machining step (S22) of the shim stopper plate for processing the thin metal plate into the shape of the shim stopper plate through a piercing and blanking process;

A lower bead plate processing step (S23) for forming a substrate hole through a process of piercing and blanking on a thin metal plate;

A laser welding step (S24) of welding the laser along the edge of the shim stopper plate such that the shim stopper plate is integrally attached to the upper surface of the lower bead plate;

A bead forming step (S25) of forming a bead in a state where the shim stopper plate is integrally attached to the lower bead plate;

A lower surface coating step of applying a coating layer on the upper and lower surfaces of the lower bead plate (S26); And

And a step (S27) of assembling the upper bead plate and the lower bead plate.