KR101505910B1 - Self piercing rivet device - Google Patents

Abstract

A self-piercing rivet device is disclosed. A self-piercing rivet device includes a frame, a rivet setting tool mounted on the frame, and an envelope die mounted on the frame in correspondence with the rivet setting tool, the self-piercing rivet being positioned between the rivet setting tool and the anvil die, Wherein the rivet setting tool comprises a punch portion including a pressurizing source and a punch rod for punching a self-piercing rivet, the punch portion being connected to the punch portion, clamping the object to be bonded, And a resilient deforming portion interposed between the punch portion and the holder portion and resiliently compressed by the punch portion and applying the compressive force to the holder portion, The rod can be inserted into the holder portion with a gap between the self-piercing rivet and a gap equal to the amount of compression deformation of the elastic deformation portion.

Description

{SELF PIERCING RIVET DEVICE}

An embodiment of the present invention relates to a self-piercing rivet device, and more particularly to a self-piercing rivet device capable of joining two or more objects to be joined through a self-piercing rivet.

In the automobile industry, the use of aluminum alloys and plastic materials to improve fuel efficiency due to environmental problems has been aimed at reducing the weight of the vehicle body. To this end, in the automotive industry, a bonding method that can replace conventional spot welding for body assembly has been studied.

Recently, a self-piercing rivet system has been adopted as a self-piercing rivet bonding method as a bonding method that meets this expectation.

The self-piercing rivet joint method is different from the conventional riveting method in which a hole for rivet joining is formed on a joining object, a rivet is inserted into the hole, and a joining object is joined by forming a rivet. The rivet is pressed into the object to be bonded, and the rivet is plastic-deformed to join the object to be bonded.

In the self-piercing rivet jointing method as described above, for example, a self-piercing rivet made of a head and a partially hollow cylindrical shank is used to fasten the object to be joined between upper and lower plates such as a metal sheet material.

On the other hand, the self-piercing rivet system has a rivet setting tool and an envelope die. Here, the self-piercing rivet is inserted by the rivet setting tool into the joining object of the upper and lower plates supported on the envelope die while being supplied to the rivet setting tool.

For example, in a self-piercing rivet system, when a rivet is pressed through a rivet setting tool in a state where a joining object of upper and lower plates is positioned between a rivet setting tool and an anvil die, the rivet penetrates through the upper plate, The ends of the rivets are expanded and deformed in the radial direction along the molding cores of the envelopes, and the objects to be joined are integrally joined.

Such a joining technique using the self-piercing rivet system can be used to join parts such as an aluminum body that is not easy to spot weld.

In addition, the joining technique using the self-piercing rivet system has the advantage that not only does it produce joints with excellent strength and fatigue characteristics that can be easily automated in the production line, but also that the distortion of the sheet material around the rivets hardly occurs .

Here, the self-piercing rivet system sets the object to be bonded between the rivet setting tool and the anvil die, clamps the object to be joined as a pressing force of the rivet setting tool, and presses the rivet through a separate punch.

That is, in the self-piercing rivet system, the rivet setting tool is brought into close contact with the object to be joined by the pressing force, and at the same time, the punch is driven by the pressing force, and the rivet is pressed into the object to be joined.

However, in such a self-piercing rivet system, the rivet setting tool is pressed against the object to be joined by a pressing force, and at the same time, the rivet is pushed through the punch by the pressing force. Therefore, when the rivet pierces and joins the object to be joined, The pressing force alone can not sufficiently hold the object to be bonded.

As a result, the upper and lower edge portions of the object to be joined are attracted to the riveting point of the object to be joined. Thus, the prior art self-piercing rivet system causes deformation of the upper and lower edge portions of the object during riveting. The satisfactory bonding performance of the object to be bonded can not be realized.

On the other hand, in the self-piercing rivet system, the envelope die, which supports the object to be bonded and supports the tip of the rivet penetrating through the upper plate of the object to be bonded to the lower plate, is made of steel material, deforms the tip of the rivet, (Cavity) for supporting the mold.

  However, since the envelope die is made of a steel material, when the lower plate of the upper and lower plates of the object to be joined is a material having a small elongation such as aluminum, the resistance against the deformation portion of the lower plate in the molding is increased. It may break the deformed portion of the lower plate or cause a crack in the deformed portion.

The embodiments of the present invention are intended to provide a self-piercing rivet device capable of firmly fixing a bonding object by sufficiently applying a pressing force to a bonding object before piercing and bonding the bonding object.

The embodiments of the present invention are also directed to a self-piercing rivet device having an envelope die to reduce the resistance of the lower plate to the deformation portion and prevent cracks or breakage of the deformation portion when the object to be joined is riveted, .

A self-piercing rivet device according to an embodiment of the present invention includes a frame, a rivet setting tool installed on the frame, and an anvil die mounted on the frame corresponding to the rivet setting tool, Wherein the rivet setting tool includes a punch portion including a pressing source and a punch rod for punching the self-piercing rivet, the punch portion being pressed by the pressing source, A holder portion which is connected to the punch portion and clamps the object to be joined and into which the punch rod is inserted with the self-piercing rivet being set, and a holder portion interposed between the punch portion and the holder portion, And an elastic deforming portion which is compressed by the punch rod and applies the compressive force to the holder portion, With a gap of as much as compression deformation amount of the elastic deformation portion between antialiasing rivets may be inserted into the holder.

Also, in the self-piercing rivet device according to the embodiment of the present invention, the elastic deformation part may include an elastic block made of urethane material having a through hole through which the punch rod penetrates.

Further, in the self-piercing rivet apparatus according to the embodiment of the present invention, the punching unit may include a punch plate for supporting one end of the punch rod, and a fixing plate coupled to the punch plate and fixing the punch rod .

Further, in the self-piercing rivet device according to the embodiment of the present invention, the punch plate may have a support hole for supporting one end of the punch rod.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the punch rod passes through the resiliently deformed part with one end thereof being supported by the support hole, and the other end of the punch rod is inserted into the holder part .

Also, in the self-piercing rivet device according to the embodiment of the present invention, the holder portion may include a holding plate connected to the punch plate through a plurality of guide rods.

Also, in the self-piercing rivet device according to the embodiment of the present invention, the holding plate may be provided with a setting hole into which the other end of the punch rod is inserted and the self-piercing rivet is set.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the elastic deformation part may include a urethane-made elastic block having a through hole through which the punch rod penetrates and a guide hole through which the guide rod penetrates .

Also, in the self-piercing rivet device according to the embodiment of the present invention, the punching portion may include a bushing installed in the support hole and supporting the punching rod.

In the self-piercing rivet device according to the embodiment of the present invention, the bushing may have a cylindrical shape into which the punch rod can be inserted.

Also, in the self-piercing rivet device according to the embodiment of the present invention, the first end of the bushing may have a first end supported by the support hole.

Also, in the self-piercing rivet device according to the embodiment of the present invention, the holding plate may be formed with a support groove connected to the setting hole and supporting the other end of the bushing.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the punch rod may be formed at one end thereof with a second latching end supported by the first latching end.

Further, in the self-piercing rivet device according to an embodiment of the present invention, the anvil die includes a urethane die block for supporting a riveting portion of the object to be joined, Member.

Also, in the self-piercing rivet device according to the embodiment of the present invention, the die block may have a flat surface for supporting the riveting portion.

The embodiment of the present invention can firmly fix the upper and lower plates of the object to be bonded by sufficiently providing a pressing force of the pressurizing source through the elastic deformation portion before the rivet pierces and joins the object to be joined.

Therefore, in the embodiment of the present invention, it is possible to prevent the upper and lower edge portions of the joining object from being excessively drawn into the riveting point of the joining object.

Furthermore, in the embodiment of the present invention, the joining performance of the self-piercing device can be further improved, for example, by preventing deformation of the upper and lower edge portions of the joining object by riveting joining through the self-piercing rivet.

Further, in the embodiment of the present invention, since a urethane die block is used as the anvil die, the resistance against the deformation portion of the lower plate is reduced through the die block, so that cracks are generated in the deformation portion of the lower plate, .

The self-piercing rivet device according to the embodiment of the present invention includes a frame, a rivet setting tool installed on the frame, and an anvil die mounted on the frame corresponding to the rivet setting tool, And an envelope die is riveting-bonded as a self-piercing rivet, wherein the anvil die comprises a urethane-made die block for supporting a riveting portion of the object to be bonded, And a fixing member to be installed.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a cross-sectional view illustrating a self-piercing rivet device according to an embodiment of the present invention.
2 is an exploded perspective view showing a riveting setting tool applied to a self-piercing rivet apparatus according to an embodiment of the present invention.
3 is a cross-sectional view illustrating the operation of the self-piercing rivet device according to the embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

In the following detailed description, the names of components are categorized into the first, second, and so on in order to distinguish them from each other in the same relationship, and are not necessarily limited to the order in the following description.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

It should be noted that terms such as " ... unit ", "unit of means "," part of item ", "absence of member ", and the like denote a unit of a comprehensive constitution having at least one function or operation it means.

First, in the embodiments of the present invention, the pressing means for generating the pressing force and the supporting means for supporting the pressing force of the pressing means are provided in one frame, and a tool operated by the pressing force of the pressing means, And can be applied to a tooling system capable of machining, forming, and bonding.

For example, embodiments of the present invention may be applied to various applications such as riveting, clinching, welding, clamping, drilling, forming and piercing of metal materials, The present invention can be applied to a tooling system for processes of FIGS.

In the embodiment of the present invention, a self-piercing rivet device called SPR system (Self Piercing Rivet System) will be described as an example of a tooling system for joining objects to be joined such as metal materials using rivets.

FIG. 1 is a cross-sectional view illustrating a self-piercing rivet apparatus according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view illustrating a rivet setting tool applied to a self-piercing rivet apparatus according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a self-piercing rivet device 100 according to an embodiment of the present invention is used to integrally rivet (join) a metal sheet material of upper and lower plates 1 and 2, will be.

Hereinafter, the following components will be described with reference to the case where the self-piercing rivet device 100 is vertically oriented. The upward facing surface can be defined as an upper surface, and the downward facing surface can be defined as a lower surface Or a bottom surface.

The above-described direction is a relative meaning, and the direction may vary depending on the reference position and the riveting direction of the self-piercing rivet device 100, so that the reference direction is not necessarily limited to the reference direction of the present embodiment .

The self-piercing rivet device 100 according to the embodiment of the present invention is a device for pressing a self-piercing rivet R at a predetermined pressure on upper and lower plates 1 and 2 of an object to be laminated, So that the upper and lower plates 1 and 2 of the object to be joined can be integrally joined.

Here, the object to be bonded may include a metal sheet material such as an aluminum sheet or a steel sheet (including a high-strength steel sheet), or may include a non-metallic material such as plastic, rubber or the like. In addition, the objects to be bonded may include plate materials of the same kind and may include plate materials of different kinds of materials.

The self-piercing rivet device 100 according to the embodiment of the present invention is configured such that the self-piercing rivet R (hereinafter referred to as "rivet" for convenience) pierces the object to be joined and presses the pressing force of the pressing device So that the object to be bonded of the upper and lower plates 1 and 2 can be firmly fixed.

Further, in the embodiment of the present invention, when the lower plate 2 of the upper and lower plates 1 and 2 of the object to be bonded is a material having a small elongation such as aluminum or the like, when the object to be joined is riveted, To thereby prevent cracks or breakage of the deformed portions, thereby providing a self-piercing rivet device (100).

To this end, the self-piercing rivet device 100 according to an embodiment of the present invention basically includes a frame 10, a rivet setting tool 20, and an envelope die 80. The self-piercing rivet device 100 will be described below.

The various components described below are all formed in the frame 10, which may include additional components such as various collars, brackets, support blocks, etc. for supporting the above components.

However, since the above-mentioned accessory elements are for supporting various constituent elements, the above-mentioned accessory elements are generally referred to as a frame 10 except for exceptional cases in the embodiment of the present invention.

In the embodiment of the present invention, the frame 10 may be moved to a joining object at various positions according to the behavior of the robot in a state of being mounted on the arm tip of the robot, and may be rotated at an angle set by the arm of the robot .

For example, the frame 10 has respective free ends facing each other and forms a C-type skeleton, which is also commonly referred to in the art as a "C-frame" or a "C-type frame".

Alternatively, the frame 10 is not necessarily limited to being mounted on the arm of the robot, but may also be a press-type frame comprising an upper die and a lower die.

In the embodiment of the present invention, the riveting tool 20 is a portion where a rivet R for joining the objects to be joined of the upper and lower plates 1 and 2 is set, generates a predetermined pressing force, To the object and to the rivet (R).

The rivet setting tool 20 may be installed in the frame 10 and further installed in the cylindrical housing 11 provided in the frame 10. The rivet setting tool 20 includes a pressing source 30, a punch portion 40, a holder portion 60, and an elastic deforming portion 70.

The pressing source 30 is a driving source for reciprocating a combined body of the punch unit 40, the holder unit 60 and the elastically deformable unit 70 to be described later with respect to the housing 11 as pneumatic, hydraulic or electric driving An actuating cylinder for generating an operating force by a solenoid, a linear motor, or the like.

The punch portion 40 is a portion pressed by the pressing source 30 and includes a punch plate 41, a bushing 43, a punch rod 45 and a fixing plate 47.

The punch plate 41 has a support hole 42 at the center thereof for supporting a bushing 43 to be described later. The support hole 42 penetrates from the upper surface to the lower surface of the punch plate 41 so as to insert the bushing 43. A first support groove 44 is formed on the upper surface of the punch plate 41 and connected to the support hole 42 with a larger diameter than the support hole 42.

The bushing 43 supports the punch rod 45 to be described later and is inserted into the support hole 42 of the punch plate 41. The bushing 43 is protruded to a predetermined length outside the lower surface of the punch plate 41 Respectively.

The bushing 43 is formed in a cylindrical shape into which the punch rod 45 can be inserted and is attached to the first support groove 44 described above at one end portion (upper end portion in the drawing) Is formed on the outer circumferential surface of the first engaging end 46a.

The first locking step 46 is a part of the bushing 43 having an outer diameter enlarged at one end thereof and the bushing 43 is inserted into the first locking groove 44 in a state in which the first locking step 46 is engaged, (42).

The punch rod 45 is for punching the rivet R. The punch rod 45 is inserted into the bushing 43 and has one end portion (upper end in the drawing) And the other end portion (the lower end portion in the drawing) is protruded with a predetermined length.

A second latching end 48, which is supported by the first latching end 46, is formed at one end of the punch rod 45. In the punch rod 45, the second latching end 48 is composed of a head portion having an expanded outer diameter at one end and a stem portion connected to the other end.

 The fixing plate 47 fixes the punch rod 45 inserted into the bushing 43 and is coupled to the upper surface of the punch plate 41. The fixing plate 47 may be coupled to the upper surface of the punch plate 41 through a plurality of bolts B. [

Reference numeral 51 denotes a support member for supporting one end of the bushing 43 and the punch rod 45 between the punch plate 41 and the fixed plate 47. [ The support member 51 can be fitted and fixed to the fixing plate 47 while supporting one end of the bushing 43 and the punch rod 45.

The holder 60 can be set with a rivet R which is separately supplied as a part for pressurizing and clamping the upper and lower plates 1 and 2 of the object to be bonded supported by the envelope die 80. [

Here, the rivet R can be supplied to the holder portion 60 through a rivet feed device (not shown in the figure), for example. The rivet feeding of the rivet feeder may be accomplished using a compressed gas (e.g., air) delivery system or a tape feed that propels the rivet (R) along the tube or track.

The control of the rivet supply system including such a rivet supply apparatus is typically performed by software. Since the rivet supply system and the control system are well known in the art, a detailed description thereof will be omitted herein .

The holder 60 is connected to the punch plate 41 of the punch 40 and is connected to the other end of the punch rod 45 at the setting position of the rivet R, 43 are inserted into the protruding portions.

The holder 60 includes a holding plate 61 connected to the punch plate 41. The holding plate 61 may be connected to the punch plate 41 through a plurality of guide rods 63.

Here, the guide rods 63 are connected to the holding plate 61 through the bolts B passing through the bottom surface of the holding plate 61, and the head rods 63 are installed to be caught by the punch plate 41 .

At the center of the holding plate 61, another end of the punch rod 45 is inserted, and a setting hole 65 in which the rivet R can be set is formed.

The upper surface of the holding plate 61 is connected to the setting hole 65 with a diameter larger than the setting hole 65 and a second support groove 67 for supporting the other end of the bushing 43 is formed .

In the embodiment of the present invention, the elastic deformation portion 70 is elastically compressed by the punching portion 40 to which the pressing force of the pressing source 30 is applied, and applies the compressive force to the holder portion 60.

The elastic deforming portion 70 includes an elastic block 71 made of a urethane material interposed between the punch plate 41 of the punching portion 40 and the holding plate 61 of the holder portion 60.

For example, the elastic block 71 satisfies the urethane spring constant k = 4468.7 (N / mm). When the compression displacement by the punch 40 is 5 mm, a compressive force of about 240 kN is applied to the holder 60 .

A through hole 73 through which the bushing 43 having the punch rod 45 inserted therein is formed at the center of the elastic block 71. At the center of the elastic block 71, A plurality of guide holes 75 through which the guide grooves 63 pass.

The bushing 43 in which the punch rod 45 is inserted is inserted into the through holes 73 of the support block 42 and the elastic block 71 in a state of being supported by the first support grooves 44 of the punch plate 41 And is inserted into the second support groove 67 of the holding plate 61. [ The other end of the punch rod 45 is inserted into the setting hole 65 of the holding plate 61.

The other end of the punch rod 45 is inserted into the setting hole 65 of the holding plate 61 with a gap G between the punch rod 45 and the rivet R as much as the compression deformation amount of the elastic block 71 .

The gap G between the punch rod 45 and the rivet R may vary depending on the pressing force of the pressing source 30, the thickness of the elastic block 71, the spring constant, It is not limited to a specific value.

The reason why the gap G is formed between the punch rod 45 and the rivet R in the setting hole 65 of the holding plate 61 as described above is that the rivet R is pressed against the pressing object The pressing force of the elastic block 71 is applied to the holder 60 by compressing the elastic block 71 by pressing the punch 40 as the pressing force of the elastic block 71. [

That is, in the embodiment of the present invention, a gap G is formed between the punch rod 45 and the rivet R as much as the compression displacement of the elastic block 71, so that the rivet R The upper and lower plates 1 and 2 of the object to be bonded can be firmly fixed by applying a compressive force of the elastic block 71 to the object to be bonded through the through holes 60 and 60.

Meanwhile, in the embodiment of the present invention, the anvil die 80 functions to support the upper and lower plates 1 and 2 of the object to be bonded and to induce deformation of the riveting area of the object to be bonded.

That is, the envelope die 80 supports the tip end of the rivet R penetrating the lower plate 2 through the upper plate 1 of the object to be bonded, deforms the tip of the rivet R, As shown in FIG.

The anvil die 80 is mounted on the frame 10 in correspondence with the rivet setting tool 20 and includes a fixing member 81 mounted on the frame 10 and a fixing member 81 fixed on the fixing member 81, And a die block 83 made of urethane material for supporting the riveting portion of the urethane.

The die block 83 has a predetermined thickness and is fixed to the fixing member 81. The upper surface of the die block 83 supporting the lower plate 2 of the object to be bonded is a flat surface.

Hereinafter, the operation and effect of the self-piercing rivet device 100 according to the embodiment of the present invention will be described in detail with reference to the drawings and the accompanying drawings.

3 is a cross-sectional view illustrating the operation of the self-piercing rivet device according to the embodiment of the present invention.

First, in the embodiment of the present invention, the upper and lower plates 1 and 2 of the object to be joined, which are overlapped with each other as shown in FIG. 1, are positioned between the rivet setting tool 20 and the envelope die 80.

Here, the setting hole 65 of the holding plate 61 is in a state in which the rivet R is supplied through a rivet feeding device (not shown), and in the setting hole 65, the punch rod 45 And is apart from the rivet R with a predetermined gap G therebetween.

In this state, when the object to be joined is to be pierced and joined with the rivet (R), in the embodiment of the present invention, the pressing source 30 is driven to press the punch 40 through the pressing source 30.

The combined body of the punching unit 40, the elastic deforming unit 70 and the holder unit 60 moves to the lower side in the figure with respect to the housing 11 and the holding plate 61 of the holder unit 60 (1) of the object to be joined. That is, the holding plate 61 of the holder unit 60 primarily clamps the upper and lower plates 1 and 2 of the object to be bonded as a pressing force of the pressing source 30.

3, when the pressure source 30 continues to be driven, the punching portion 40 presses the elastic block 71 of the elastic deformation portion 70 by the urging force of the pressure source 30 Resiliently compress.

In this case, since the gap G is formed between the punch rod 45 and the rivet R in the setting hole 65 of the holding plate 61, the punch portion 40 is pressed against the pressing source 30 The elastic block 71 can be compressed to a displacement corresponding to the gap G thereof.

Therefore, in the embodiment of the present invention, the punch portion 40 is pressed as the pressing force of the pressing source 30 before the rivet R pierces and joins the object to be joined, thereby compressing the elastic block 71 so that the elastic block 71 Can be applied to the holder portion 60. [

For example, the elastic block 71 satisfies the urethane spring constant k = 4468.7 (N / mm). When the compressive displacement by the punch 40 is 5 mm, the compressive force of about 240 kN is applied to the holder 60. To the holding plate 61 of the holding plate 61.

Thus, in the embodiment of the present invention, a gap G is formed between the punch rod 45 and the rivet R as much as the compression displacement of the elastic block 71, so that the rivet R is pressurized before the joining object is joined The upper and lower plates 1 and 2 of the object to be bonded are pressed against each other by pressing the elastic block 71 through the punch 40 as a pressing force of the elastic block 71 and applying the compressive force of the elastic block 71 to the holder 60 It can be firmly fixed.

In the embodiment of the present invention, when the pressure source 30 is continuously driven in a state in which the upper and lower plates 1 and 2 of the object to be bonded are firmly clamped through the holder 60 as described above, 40 punches the rivet R as a pressing force of the pressing source 30.

Therefore, in the embodiment of the present invention, the rivet R passes through the upper plate 1 of the object to be bonded by the pressing force of the punch rod 45, and the end of the rivet R is moved outward So that the upper and lower plates 1 and 2 of the object to be joined can be integrally joined.

In the embodiment of the present invention, since the die block 83 supporting the riveting portion of the object to be bonded is made of a urethane material, the lower one of the upper and lower plates 1 and 2 of the object to be bonded, In the case of a material having a small elongation, the resistance against the deformation portion of the lower plate 2 can be reduced.

That is, when the tip of the rivet R is pressed into the lower plate 2 and deforms the lower plate 2, the deformed portion of the die block 83 is supported by the elasticity of the die block 83, It is possible to reduce the resistance acting on the lower plate 2 by the lower plate 2.

According to the self-piercing rivet device 100 according to the embodiment of the present invention as described above, the rivet R is inserted through the elastic deformation portion 70 before piercing and joining the object to be joined, So that the upper and lower plates 1 and 2 of the object to be bonded can be firmly fixed.

Therefore, in the embodiment of the present invention, the edge portions of the upper and lower plates 1 and 2 of the object to be bonded can be prevented from being attracted to the riveting point of the object to be bonded.

Thus, in the embodiment of the present invention, the joining performance of the self-piercing device 100 can be improved by preventing deformation of the edge portions of the upper and lower plates 1 and 2 when the joining object is riveted by the self-piercing rivet R Can be improved.

In the embodiment of the present invention, since the die block 83 made of a urethane material is used as the anvil die 80, the resistance against the deformation portion of the lower plate 2 is reduced through the die block 83, It is possible to prevent cracks from being generated in the deformed portions of the optical fiber bundles or damage of the deformed portions.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Other embodiments may easily be proposed by adding, changing, deleting, adding, etc., but this is also within the scope of the present invention.

1 ... top plate 2 ... bottom plate
10 ... frame 11 ... housing
20 ... rivet setting tool 30 ... pressure source
40 ... Punch part 41 ... Punch plate
42 ... support hole 43 ... bushing
44 ... first support groove 45 ... punch rod
46 ... first stop 47 ... fixed plate
48 ... second engaging end 51 ... supporting member
60 ... holder portion 61 ... holding plate
63 ... guide rod 65 ... setting hole
67 ... second support groove 70 ... elastic deformation portion
71 ... elastic block 73 ... through hole
75 ... Guide ball 80 ... Envil die
81 ... fixing member 83 ... die block
B ... bolt G ... gap
R ... rivet

Claims (12)

A rivet setting tool mounted on the frame, and an anvil die mounted on the frame in correspondence with the rivet setting tool, wherein a joining object positioned between the rivet setting tool and the anvil die is provided as a self- 1. A self-piercing rivet device for splicing,
Wherein the rivet setting tool includes a punch portion including a pressing source and a punch rod for punching the self-piercing rivet, the punch portion being connected to the punch portion and clamping the object to be bonded, and the self- And a resilient deforming portion interposed between the punch portion and the holder portion and resiliently compressed by the punch portion and applying the compressive force to the holder portion,
Wherein the punch rod is inserted into the holder portion with a gap between the self-piercing rivet and a gap corresponding to a compression deformation amount of the elastic deformation portion,
Wherein the punch portion includes a punch plate for supporting one end portion of the punch rod, and a fixing plate coupled to the punch plate and fixing the punch rod,
Wherein the holder portion includes a holding plate connected to the punch plate through a plurality of guide rods,
Wherein the holding plate has a setting hole into which the other end of the punch rod is inserted and in which the self-piercing rivet can be set. The method according to claim 1,
The elastic deformation portion
And an elastic block made of a urethane material having through holes through which the punch rod penetrates. delete The method according to claim 1,
A support hole for supporting one end of the punch rod is formed in the punch plate,
Wherein the punch rod passes through the resiliently deformed portion with one end thereof being supported by the support hole, and the other end of the punch rod is inserted into the holder portion. delete The method according to claim 1,
The elastic deformation portion
A through hole through which the punch rod penetrates, and a guide hole through which the guide rod passes. The self-piercing rivet device according to claim 1, 5. The method of claim 4,
Wherein the punch portion includes a bushing installed in the support hole and supporting the punch rod,
Wherein the bushing has a cylindrical shape into which the punch rod can be inserted, and a first end supported by the support hole is formed at one end of the bushing. 8. The method of claim 7,
Wherein the holding plate is connected to the setting hole and has a support groove for supporting the other end of the bushing. 8. The method of claim 7,
And a second latching end is formed at one end of the punch rod to be supported by the first latching end. The method according to claim 1,
The above-
A die block of a urethane material for supporting a riveting portion of the object to be joined,
And a fixing member fixed to the frame and fixing the die block. 11. The method of claim 10,
Wherein the die block has a flat surface for supporting the riveting portion. delete

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