KR20140026817A - Self piercing rivet device and anvil unit thereof - Google Patents

Self piercing rivet device and anvil unit thereof Download PDF

Info

Publication number
KR20140026817A
KR20140026817A KR1020120092493A KR20120092493A KR20140026817A KR 20140026817 A KR20140026817 A KR 20140026817A KR 1020120092493 A KR1020120092493 A KR 1020120092493A KR 20120092493 A KR20120092493 A KR 20120092493A KR 20140026817 A KR20140026817 A KR 20140026817A
Authority
KR
South Korea
Prior art keywords
pivot member
self
frame
piercing rivet
unit
Prior art date
Application number
KR1020120092493A
Other languages
Korean (ko)
Other versions
KR101392965B1 (en
Inventor
조해용
Original Assignee
충북대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 충북대학교 산학협력단 filed Critical 충북대학교 산학협력단
Priority to KR1020120092493A priority Critical patent/KR101392965B1/en
Publication of KR20140026817A publication Critical patent/KR20140026817A/en
Application granted granted Critical
Publication of KR101392965B1 publication Critical patent/KR101392965B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/20—Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/086—Self-piercing rivets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

A self-piercing rivet device is disclosed. The self-piercing rivet device disclosed comprises: i) a frame having first and second free ends facing each other and forming a C-shaped skeleton; ii) a punch unit mounted on the first free end; and iii) And an anvil unit pivotally installed at a second free end with a rotation center point and compensating for the elastic deformation of the frame due to the pressing force of the punch unit.

Description

[0001] SELF-PIERCING RIVET DEVICE AND ANGIL UNIT THEREOF [0002]

An embodiment of the present invention relates to a self-piercing rivet device capable of joining two or more objects to be joined through a self-piercing rivet, and more particularly, to an object to be pierced and an envelope unit for supporting a pressing force of the punch.

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.

For this purpose, in the automobile industry, a joining method capable of replacing conventional spot welding for assembling a vehicle body is being 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 jointing method is different from the conventional riveting method in which a hole for riveting is formed on a joining object such as a steel plate and a rivet is inserted into the hole and then the head is molded to join the object to be joined. Or the rivet is subjected to plastic deformation by press-fitting the rivet into the object to be bonded by air pressure 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.

For example, the self-piercing rivet is pierced by a punch of the setting tool so that the shank penetrates the upper plate of the object to be joined and flares outwardly by the envelope. The shank is press-fitted into the lower plate with the head portion supporting the upper plate, The upper and lower plates can be joined.

Here, the punch and the envelope are generally formed in the C-frame, and the punch is fixed to one free end of the C-frame, and the envelope can be fixed to the other free end of the C-frame.

Therefore, in the self-piercing rivet system, when the rivet is pushed through the upper plate and penetrates into the lower plate when the object to be joined is positioned between the punch and the anvil, So that the objects to be joined are integrally joined together while being expanded and deformed in the radial direction.

Thus, bonding techniques using self-piercing rivets can be used to bond components such as aluminum bodywork that are not easy to spot weld.

In addition, the joining technique using the self-piercing rivets not only produces joints with excellent strength and fatigue characteristics that can be easily automated in the production line, but also causes little distortion of the top surface of the sheet material around the rivets Since joints are aesthetically acceptable, they have proved successful in this context.

On the other hand, in the bonding technique using the self-piercing rivet, in the process of applying the pressing force of the punch to the rivet and the riving-bonding object supported on the envelope, the pressing force of the punch is transmitted to the C- Direction.

In this case, since the pressing force of the punch eccentrically acts on one side of the envelope due to the deformation of the C-frame, the punch and the envelope can not maintain the horizontal state, and the pressing force of the punch against the envelope does not act uniformly with the vertical pressure .

Therefore, in this case, the pressing force of the punch eccentrically acts on the envelope due to the deformation of the C-frame, and the pressing force of the punch does not act perpendicularly on the envelope. As a result, the bonding performance of the object to be bonded deteriorates, The eccentric action may cause wear or damage to the envelope.

Embodiments of the present invention are intended to provide a self-piercing rivet device and an envelope unit thereof that can compensate deformation of a C-frame due to a pressing force of a punch with a simple configuration when riveting the joining object.

A self-piercing rivet device according to an embodiment of the present invention includes: a frame having a first and a second free end opposite to each other and forming a C-shaped skeleton; ii) a punch unit mounted on the first free end; And iii) an anvil unit pivotally installed at the second free end portion corresponding to the punch unit with a rotation center point, for compensating for elastic deformation of the frame due to a pressing force of the punch unit.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the anvil unit includes an envelope die for supporting a pressing force of the punch unit, and a pivot member connected to the anvil die and pivotally coupled to the second free end can do.

In addition, in the self-piercing rivet device according to the embodiment of the present invention, the second free end may be formed with a coupling groove into which the pivot member is inserted.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the pivot member may form a predetermined gap between the anvil die and the second free end and may be pivotally coupled to the engaging groove.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the anvil die can be rotated in the direction perpendicular to the thickness direction of the frame within the range of the gap by the pivot member.

In addition, in the self-piercing rivet device according to the embodiment of the present invention, the pivot member may have a round rod shape.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the pivot member may be fitted in the engaging groove in the thickness direction of the frame.

In addition, in the self-piercing rivet device according to an embodiment of the present invention, the coupling groove may have a circumferential surface larger than the semicircle circumference of the pivot member may be formed along the thickness direction of the frame.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the pivot member may be formed longer than the length of the coupling groove.

In the self-piercing rivet device according to the embodiment of the present invention, a stopper may be provided on both side portions of the pivot member to prevent the pivot member from separating from the engaging groove in the thickness direction of the frame.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the stopper may include a ring spring installed on the outer circumferential surface of the pivot member.

In addition, in the self-piercing rivet device according to the embodiment of the present invention, the second free end may be formed with a coupling groove into which the pivot member can be fitted.

Further, in the self-piercing rivet device according to the embodiment of the present invention, the pivot member may be inserted in the thickness direction of the frame into the coupling groove as a ball shape.

In addition, in the self-piercing rivet device according to an embodiment of the present invention, the coupling groove may have a circumferential surface larger than the semicircle circumference of the pivot member may be formed along the thickness direction of the frame.

Further, in the self-piercing rivet device according to the embodiment of the present invention, a stopper may be installed in the coupling groove with the pivot member interposed therebetween.

The eiffel unit for a self-piercing rivet device according to the embodiment of the present invention is formed at the other end of the C-shaped frame for supporting a pressing force of a punch unit provided at one end of the C-shaped frame, And an envelope die pivotally installed at the other end of the C-shaped frame through the pivot member to compensate for the elastic deformation of the C-shaped frame by the punch unit.

In addition, in the anvil unit for the self-piercing rivet device according to the embodiment of the present invention, the pivot member may form a predetermined gap between the other end of the C-shaped frame and the anvil die.

In addition, in an envelope unit for a self-piercing rivet device according to an embodiment of the present invention, the envelope die can be pivotably installed at least in both directions within the range of the gap by the pivot member.

In addition, in the ebony unit for a self-piercing rivet device according to an embodiment of the present invention, the pivot member is integrally connected to the envelope die, and is pivotally coupled to an engaging groove provided at the other end of the C- .

In addition, in the eaves unit for a self-piercing rivet device according to the embodiment of the present invention, the pivot member may have a round rod shape.

In addition, in the anvil unit for the self-piercing rivet device according to the embodiment of the present invention, the pivot member may be formed in a ball shape.

In addition, in the anvil unit for a self-piercing rivet device according to an embodiment of the present invention, the pivot member may be pivotally coupled to a predetermined position of the coupling groove through a stopper.

The embodiment of the present invention can easily compensate the deformation of the frame irrespective of the cantilever length of the frame and the pressing force of the punch unit as the anvil unit is applied to the second free end of the frame in a pivotable manner.

Therefore, in the embodiment of the present invention, the pressing force of the punch unit does not act eccentrically to one side of the envelope unit of the anvil unit due to deformation of the frame, but can act uniformly with the vertical pressure.

As a result, in the embodiment of the present invention, when the anvil unit is rotated by the amount of deformation of the frame due to the pivot action of the envelope unit during the riveting bonding of the object to be joined, the punch mechanism of the puzzle unit and the envi- , It is possible to improve the joining performance of the object to be joined and to prevent wear and damage of the envy unit due to the eccentric action of the pressing force.

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 an exploded perspective view showing a self-piercing rivet device according to an embodiment of the present invention.
2 is a perspective view illustrating a self-piercing rivet according to an embodiment of the present invention.
FIG. 3 is a perspective view illustrating an envelope unit for a self-piercing rivet device according to an embodiment of the present invention. FIG.
4 is a cross-sectional view showing a coupling structure of an eiffel unit for a self-piercing rivet device according to an embodiment of the present invention.
5 and 6 are views for explaining the operation of the self-piercing rivet device according to the embodiment of the present invention.
7 is an exploded perspective view showing a self-piercing rivet device according to another embodiment of the present invention.
8 is an assembled perspective view illustrating a self-piercing rivet device according to another embodiment of the present invention.
9 is a cross-sectional view illustrating an even unit for a self-piercing rivet device according to another 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. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

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 a part is said to "include" a certain component, it means that it can further include other components, without excluding other components 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.

FIG. 1 is an exploded perspective view illustrating a self-piercing rivet device according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a self-piercing rivet device according to an embodiment of the present invention.

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

For example, embodiments of the present invention may include riveting, clinching, welding, clamping, drilling, forming, piercing, etc. of metal materials. It can be applied to a tooling system for the processes of.

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

However, the present invention is not limited to the embodiments of the self-piercing rivet device, but may be applied to a tooling system for other processes except riveting.

Referring to FIGS. 1 and 2, the self-piercing rivet device 100 according to the embodiment of the present invention is for integrally riveting (joining) the upper and lower metal sheet materials as objects to be joined.

Hereinafter, the following components will be described with reference to the vertical orientation of the self-piercing rivet device 100. The upward facing surface may be defined as an upper surface, and the downward facing surface may be defined as a lower surface Or < / RTI >

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 (not shown) at a constant pressure on a object to be joined of a metal sheet material And the joining objects 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 an embodiment of the present invention to be described below is a supporting means for supporting a pressing force when the frame is elastically deformed by a pressing force of the above-mentioned pressing source, .

That is, according to the embodiment of the present invention, the amount of deformation of the frame is compensated through the supporting means, so that the pressing force applied to the supporting means is not eccentric to one side regardless of the length of the pressure acting portion of the frame and the pressing force of the pressing source. Thereby providing a self-piercing rivet device (100).

To this end, the self-piercing rivet device 100 according to the embodiment of the present invention basically includes a frame 10, a punch unit 30 as a pressurizing source, and an anvil unit 200 as a supporting means. The following is a detailed description.

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 collectively referred to as a frame 10, except in exceptional cases.

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 .

The frame 10 has a first free end 11 and a second free end 12 facing each other and forms a C-type skeleton. In the related art, a "C-frame" or a "C- "Is also called. Hereinafter, a C-frame or a C-type frame is referred to as "frame" for convenience.

For example, the frame 10 may have a truss shape having a plurality of spaces between an exoskeleton and an endoskeletal of a predetermined thickness.

However, in the embodiment of the present invention, the frame 10 is not necessarily made of a truss structure, but may alternatively be made of a C-shaped steel block.

The first and second free ends 11 and 12 can be defined as a cantilever in which the end portions of the C-shaped skeleton of the frame 10 face each other and are not supported at their ends have.

Although the first free end 11 is shown on the upper side and the second free end 12 is shown on the lower side in the figure, the positions of the first and second free ends 11, And the position of the frame 10 in accordance with the change of position.

Such a frame 10 is configured such that the first and second free ends 11 and 12 move away from each other as the operating force of the punch unit 30 to be described later is transmitted to the first and second free ends 11 and 12 as they are, And other various directions.

In the embodiment of the present invention, the first free end portion 11 of the frame 10 is provided with a mounting portion 15 for mounting the punch unit 30 to be described later.

The mounting portion 15 is integrally formed with the first free end portion 11 and has a mounting hole 16 to which the punch unit 30 can be coupled vertically.

On the other hand, in the embodiment of the present invention, the second free end 12 of the frame 10 is formed with an engaging groove 25 for mounting the anvil unit 200 to be described later.

The coupling groove 25 may be formed in a round shape and may be formed on the upper surface of the second free end 12 along the thickness direction of the frame 10.

Such an engaging structure of the anvil unit 200 with respect to the engaging groove 25 of the second free end 12 will be described in detail later with reference to Fig.

In the embodiment of the present invention, the punch unit 30 generates a predetermined pressing force to a portion to which a self-piercing rivet (not shown in the drawing) is supplied for bonding the object to be joined and applies the pressing force to the self- .

The punch unit 30 is mounted on the mounting portion 15 of the frame 10 and can be coupled to the mounting hole 16 of the mounting portion 15. [

The punch unit 30 may include a punch cylinder 31 driven by a hydraulic or pneumatic pressure and a punch mechanism 33 actuated by the punch cylinder 31 and capable of hitting the self-piercing rivet.

Here, the punch mechanism 33 is driven forward by the punch cylinder 31, and clamps the bonded object supported by the envelope unit 200, which will be described later, and strikes the self-piercing rivet by a punch .

The punch unit 30 is a known punch assembly employed in a self-Piercing Riveting (SPR) system, which is well known in the art, so that a detailed description of the structure will be omitted herein.

FIG. 3 is a perspective view illustrating an eiffel unit for a self-piercing rivet device according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating an engaging structure of an eiffel unit for a self-piercing rivet device according to an embodiment of the present invention .

1 to 4, an envelope unit 200 for a self-piercing rivet device according to an embodiment of the present invention is for supporting the pressing force of the punch unit 30 acting on the self-piercing rivet and the object to be joined.

That is, the anvil unit 200 supports the object to be bonded at the lower side of the punch unit 30 with reference to the drawing, supports the pressing force of the punch unit 30 acting on the self-piercing rivet, And for plastic deformation of the end portion of the self-piercing rivet which is inserted into the lower plate through the upper plate of the object.

In the embodiment of the present invention, the anvil unit 200 has a structure capable of compensating for the deformation of the frame 10 which is deformed by the pressing force of the punching unit 30.

The anvil unit 200 according to the embodiment of the present invention can be applied to the second free end 12 of the frame 10 in a pivotable structure so that the cantilever length of the frame 10, Thereby providing a structure capable of compensating deformation of the frame 10 regardless of the pressing force.

In addition, the anvil unit 200 according to the embodiment of the present invention is configured such that the pressing force of the punch unit 30 does not act eccentrically to one side due to the deformation of the frame 10, So that the riveting bonding performance can be improved.

The ebulil unit 200 according to the embodiment of the present invention is configured such that when the joining object is riveted to the joining object by the pivoting action with respect to the second free end 12, State to maintain a structure that is not worn or damaged by the eccentricity of the pressing force.

The envelope unit 200 according to an embodiment of the present invention basically includes an envelope 110 and a pivot member 210.

In the embodiment of the present invention, the anvil die 110 is a portion supporting the object to be bonded and directly acting on the pressing force of the punching unit 30, and the pivoting member 210, which will be described later, The second free end portion 12 of the first housing 12 can be pivotally mounted with a rotation center point.

On the upper surface of the envelope die 110, there is formed a shaping valley 111 for plastic deformation of the end portion of the self-piercing rivet which is press-fitted into the lower plate through the upper plate of the object to be joined by the pressing force of the punch unit 30 .

The shaping trough 111 is made of a space for accommodating the amount of deformation (volume) of the object to be joined, which is plastic-deformed by the self-piercing rivet in order to satisfy a predetermined constant volume condition for the incompressible metal material in the plastic working of the metal.

The pivot member 210 forms a center of rotation with respect to the second free end 12 of the frame 10 and is mounted on the underside of the envelope die 110, (Not shown).

For example, the pivot member 210 has a circular cross-section rod shape having a predetermined length and is integrally connected to the lower side of the envelope die 110. The pivot member 210 is integrally connected to the lower side of the envelope die 110 May be integrally formed and may be bonded to the underside of the envelope die 110 by welding.

In this case, the pivot member 210 is fitted in the engaging groove 25 of the second free end portion 12 in the thickness direction of the frame 10, and is relatively longer than the length of the engaging groove 25 .

The pivot member 210 may be pivotally coupled to the engaging groove 25 by forming a predetermined gap G between the upper surface of the second free end 12 and the ebulizer die 110.

In this case, the coupling groove 25 forms a circumferential surface (inner circumferential surface) that is relatively larger than the semicircle circumference of the pivot member 210 to prevent the pivot member 210 from escaping upward.

The pivot member 210 is inserted into the engaging groove 25 of the second free end portion 12 in the thickness direction of the frame 10 and is guided by the circumferential surface of the engaging groove 25, And can be rotated in the direction perpendicular to the thickness direction of the frame 10 within the range of the gap G by the pivot member 210. [

In the embodiment of the present invention, a stopper 310 for preventing the pivot member 210 from separating from the engaging groove 25 of the second free end 12 in the thickness direction of the frame 10 .

The stopper 310 may include a ring spring 311 coupled to both side portions of the pivot member 210 located at both side portions of the pivot member 210, .

The ring spring 311 may be a C-shaped ring spring and may be coupled to the spring groove 211 provided on the outer peripheral surfaces of both side portions of the pivot member 210.

Hereinafter, the assembling process and operation 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 following drawings.

5 and 6 are views for explaining the operation of the self-piercing rivet device according to the embodiment of the present invention.

As shown in the drawings, the self-piercing rivet device 100 according to the embodiment of the present invention includes a first free end portion 11 of the frame 10, The punch unit 30 is mounted on the mounting portion 15 and the anvil unit 200 is mounted on the engaging groove 25 of the second free end portion 12. [

The pivot member 210 integrally formed with the anvil die 110 is inserted into the coupling groove 25 of the second free end portion 12 in the embodiment of the present invention, In the thickness direction of the frame 10.

At this time, since the coupling groove 25 forms a circumferential surface larger than the semicircle circumference of the pivot member 210, the pivot member 210 is inserted into the coupling groove 25 in the thickness direction of the frame 10. While being made, the coupling groove 25 is not separated from the upward direction.

Then, in the embodiment of the present invention, the stopper 310 is installed on both side portions of the pivot member 210. The pivot member 210 can be pivotally coupled to the engaging groove 25 without detaching from the engaging groove 25 in the thickness direction of the frame 10. [

The pivot member 210 is pivotally coupled to the engaging groove 25 and is pivoted to the upper surface of the second free end 12 with the pivot point at the second free end 12 of the frame 10, 110 formed on the surface of the substrate.

The anvil die 110 of the anvil unit 200 according to the embodiment of the present invention is configured such that the gap between the upper surface of the second free end portion 12 and the anvil die 110 by the pivot member 210 In the direction perpendicular to the thickness direction of the frame.

When the self-piercing rivet 100 according to the embodiment of the present invention assembled as described above is used for riveting and joining the objects to be joined with the upper and lower plates by self-piercing rivets, in the embodiment of the present invention, The frame 10 is moved toward the object to be bonded by the action of the robot in a state where the frame 10 is attached to the tip of the arm.

Here, the frame 10 may be rotated at an angle set by the arm of the robot according to the position of the object to be bonded, and the object to be bonded may be rotated between the first and second free ends 11 and 12 of the frame 10, And is positioned between the punching unit 30 and the envelope unit 200.

In this state, in the embodiment of the present invention, the punch mechanism 33 of the punch unit 30 is driven forward through the punch cylinder 31 to move to the riveting target point of the object to be bonded.

Then, the object to be bonded is clamped by the punch mechanism 33 while being supported by the envelope die 110 of the envelope unit 200.

Then, when the punch cylinder 31 is continuously driven forward in a state where the self-piercing rivet (not shown) is supplied to the punch mechanism 33, the punch of the punch mechanism 33 Presses the self-piercing rivet as a pressing force of the punch cylinder 31. [

Therefore, in the embodiment of the present invention, the self-piercing rivet passes through the upper plate of the object to be joined by the pressing force of the punch unit 30, and flares outward along the molding trough 111 of the envelope die 110, The upper and lower plates of the object to be joined can be integrally joined.

In the process of applying the pressing force of the punch unit 30 to the self-piercing rivet as described above so that the pressing force of the punch unit 30 is applied to the first part of the frame 10 The frame 10 can be resiliently deformed, for example, in such a direction that the first and second free ends 11 and 12 move away from each other.

When the frame 10 is elastically deformed, the pressing force of the punch unit 30 acts eccentrically to one side of the anvil die 110. In the embodiment of the present invention, the anvil die 110 is pivotally supported by the pivot member 210, 5 and 6 with respect to the rotation center point of the pivot member 210 because the pivot member 210 is pivotally coupled to the second free end 12 of the frame 10 via the pivot member 210. [

That is, the anvil die 110 is caused by the pivot member 210 due to the deformation of the frame 10 within the gap G between the upper surface of the second free end 12 and the anvil die 110 It is possible to rotate in a direction perpendicular to the thickness direction of the frame 10 (left or right direction with reference to the drawing).

When the frame 10 is deformed due to the pressing force of the punch unit 30 and the pressing force is eccentrically applied to the envelope die 110, The deformation amount of the frame 10 can be compensated.

As described above, according to the self-piercing rivet device 100 according to the embodiment of the present invention, the anvil unit 200 is applied in a pivotable structure to the second free end 12 of the frame 10 The deformation of the frame 10 can be easily compensated regardless of the cantilever length of the frame 10 and the pressing force of the punch unit 30 in the embodiment of the present invention.

Therefore, in the embodiment of the present invention, the pressing force of the punch unit 30 does not act eccentrically to one side of the envelope die 110 of the anvil unit 200 due to the deformation of the frame 10, have.

Thus, in the embodiment of the present invention, when the joining object is riveted, the pendulum action of the pendulum unit 200 causes the pendulum unit 200 to rotate by the amount of deformation of the frame 10, 110 and the punching mechanism 33 of the punching unit 30 can be kept in a horizontal state at all times, so that the joining performance of the object to be joined can be improved and the abrasion of the navel unit 200 due to the eccentric action of the pressing force And the like can be prevented.

FIG. 7 is an exploded perspective view showing a self-piercing rivet according to another embodiment of the present invention, FIG. 8 is an assembled perspective view of FIG. 7, FIG. 9 is a cross- Fig.

7 to 9, a self-piercing rivet device 300 according to another embodiment of the present invention includes a first free end 712 of the frame 710, 720, 720, 710, 720, 710, and 710).

In an embodiment of the present invention, the anvil unit 400 includes an envelope die 810 as in the electrical embodiment and a ball-shaped pivot member 910 integrally connected to the envelope die 810.

The pivot member 910 forms a rotation center point on the second free end 712 of the frame 710 and is provided on the lower side of the envelope die 810, Lt; RTI ID = 0.0 > 725 < / RTI >

For example, the pivot member 910 is integrally connected to the underside of the even die 810 and may be integrally formed on the underside of the even die 810 by machining, 810, respectively.

The pivot member 910 is inserted into the engaging groove 725 of the second free end portion 712 in the thickness direction of the frame 710 and the upper surface of the second free end portion 712 and the surface of the envelope die 810 And may be pivotally coupled to the coupling groove 725. [

In this case, the coupling groove 725 forms a circumferential surface (inner circumferential surface) that is relatively larger than the semicircle circumference of the pivot member 910 to prevent the pivot member 910 from escaping upward.

The pivotal member 910 is fitted in the engaging groove 725 of the second free end 712 in the thickness direction of the frame 710 and is engaged with the engaging groove 725 by the circumferential surface of the engaging groove 725, And can be rotated in multiple directions including a direction perpendicular to the thickness direction of the frame 710 within the range of the gap G by the pivot member 910. [

In an embodiment of the present invention, the stopper 930 may be further provided to prevent the pivot member 910 from being detached in the thickness direction of the frame 710 at a predetermined position of the coupling groove 725.

The stopper 930 includes an engagement pin 931 which is installed on the inner peripheral surface of the engagement recess 725 on both sides of the pivot member 910. The engagement pin 931 is engaged with the engagement recess 725 (Not shown).

Therefore, according to the self-piercing rivet device 300 according to another embodiment of the present invention configured as described above, the pressing force of the punch unit 430 is applied to the self-piercing rivet, When the frame 710 is deformed by the pressing force of the punch unit 430 in the process of riveting joining, the pressing force of the punch unit 430 can eccentrically act on the envelope die 810.

However, in another embodiment of the present invention, since the anvil die 810 is pivotally coupled to the second free end 712 of the frame 710 through the ball shaped pivot member 910, Including the direction perpendicular to the thickness direction of the frame 710 with respect to the rotation center point of the frame 710.

That is, the anvil die 810 is caused by the pivot member 910 due to the deformation of the frame 710 within the gap G between the upper surface of the second free end 712 and the anvil die 810 It is possible to rotate in multiple directions including a direction perpendicular to the thickness direction of the frame 710.

When the envelope 810 is eccentrically applied to the envelope die 810 while the frame 710 is deformed by the pressing force of the punch unit 430, The deformation amount of the frame 710 can be compensated while rotating around the member 910. [

The rest of the configuration and effects of the self-piercing rivet device 300 and the anvil unit 400 according to another embodiment of the present invention are the same as those in the electric embodiment, and a detailed description thereof will be omitted below.

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.

10, 710 ... frame 11 ... first free end
12, 712 ... second free end 15 ... mounting portion
16 ... mounting holes 25, 725 ... engaging grooves
30, 430 ... punch unit 31 ... punch cylinder
33 ... Punch mechanism 110, 810 ... Envil die
111 ... molding goal 200, 400 ... envir unit
210, 910 ... Pivot member 211 ... Spring groove
310, 930 ... stopper 311 ... ring spring
735 ... pin groove 931 ... engaging pin
G ... Gap

Claims (17)

A frame having a first and a second free end opposite to each other and forming a C-shaped skeleton;
A punch unit mounted on the first free end; And
Anvil unit is pivotally installed at the second free end corresponding to the punch unit and pivotally installed, and compensates for the elastic deformation of the frame due to the pressing force of the punch unit.
Self piercing rivet device comprising a. The method according to claim 1,
The anvil unit,
Anvil die for supporting the pressing force of the punch unit,
And a pivot member coupled to the anvil die and pivotally coupled to the second free end. The method of claim 2,
And a coupling groove into which the pivot member can be fitted. The method of claim 3,
The pivot member includes:
And a pivotable pivotably coupled to said engaging groove, said engaging groove forming a predetermined gap between said anvil die and said second free end. 5. The method of claim 4,
The anvil die is,
Wherein the pivot member is rotated in a direction perpendicular to the thickness direction of the frame within a range of the gap. The method of claim 3,
The pivot member includes:
Self-piercing rivet device is made in the form of a rod of a circular cross-section, the coupling groove is fitted in the thickness direction of the frame. The method of claim 6,
The coupling groove
Self-piercing rivet device having a circumferential surface larger than the semicircle around the pivot member is formed along the thickness direction of the frame. The method of claim 7, wherein
Wherein the pivot member is longer than the length of the engagement groove. The method according to any one of claims 3 to 8,
On both side portions of the pivot member,
Self-piercing rivet device is provided with a stopper for preventing the pivot member from being separated from the coupling groove in the thickness direction of the frame. 10. The method of claim 9,
The stopper is,
And a ring spring provided on an outer circumferential surface of the pivot member. The method of claim 2,
The second free end is provided with a coupling groove into which the pivot member can be fitted,
The pivot member is inserted into the coupling groove in the thickness direction of the frame in the form of a ball,
The coupling groove is a self-piercing rivet device having a circumferential surface larger than the semicircle around the pivot member is formed along the thickness direction of the frame. 12. The method of claim 11,
Self-piercing rivet device that the stopper is installed in the coupling groove with the pivot member therebetween. An anvil unit for a self-piercing rivet device configured at the other end of the C-frame to support the pressing force of the punch unit provided at one end of the C-shaped frame,
Anvil unit for the self-piercing rivet device, characterized in that it is pivotally installed on the other end of the C-shaped frame through a pivot member, and comprises an anvil die for compensating the elastic deformation of the C-shaped frame by the punch unit. . The method of claim 13,
The pivot member defines a predetermined gap between the other end of the C-shaped frame and the anvil die,
Wherein the anvil die is pivotably mounted in at least both directions within the range of the gap by the pivot member. The method of claim 13,
The pivot member includes:
Integrally connected to the anvil die and pivotally coupled to a coupling groove provided at the other end of the C-shaped frame,
Anvil unit for a self-piercing rivet device, characterized in that the rod shape of the circular cross section. The method of claim 13,
The pivot member includes:
Integrally connected to the anvil die and pivotally coupled to a coupling groove provided at the other end of the C-shaped frame,
Anvil unit for a self-piercing rivet device, characterized in that the ball shape. 17. The method according to claim 15 or 16,
The pivot member is an anvil unit for a self-piercing rivet device, characterized in that the pivot is coupled to the set position of the coupling groove through the stopper.
KR1020120092493A 2012-08-23 2012-08-23 Self piercing rivet device and anvil unit thereof KR101392965B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120092493A KR101392965B1 (en) 2012-08-23 2012-08-23 Self piercing rivet device and anvil unit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120092493A KR101392965B1 (en) 2012-08-23 2012-08-23 Self piercing rivet device and anvil unit thereof

Publications (2)

Publication Number Publication Date
KR20140026817A true KR20140026817A (en) 2014-03-06
KR101392965B1 KR101392965B1 (en) 2014-05-08

Family

ID=50641204

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120092493A KR101392965B1 (en) 2012-08-23 2012-08-23 Self piercing rivet device and anvil unit thereof

Country Status (1)

Country Link
KR (1) KR101392965B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104646589A (en) * 2015-03-02 2015-05-27 张琦 Stamping head of pneumatic electrical riveting machine
CN106001370A (en) * 2014-12-12 2016-10-12 (株)星宇Hitech Frame for self-piercing rivet system
EP3403741A1 (en) * 2017-05-16 2018-11-21 Böllhoff Verbindungstechnik GmbH C-shaped tool holder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102280608B1 (en) * 2019-11-27 2021-07-23 한국생산기술연구원 Self piercing riveting device and self piercing riveting method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106001370A (en) * 2014-12-12 2016-10-12 (株)星宇Hitech Frame for self-piercing rivet system
US9873148B2 (en) 2014-12-12 2018-01-23 Sungwoo Hitech Co., Ltd. Frame for self-piercing rivet system
CN106001370B (en) * 2014-12-12 2018-12-14 (株)星宇Hitech Frame for self-piercing riveting system
CN104646589A (en) * 2015-03-02 2015-05-27 张琦 Stamping head of pneumatic electrical riveting machine
EP3403741A1 (en) * 2017-05-16 2018-11-21 Böllhoff Verbindungstechnik GmbH C-shaped tool holder
US20180333769A1 (en) * 2017-05-16 2018-11-22 Böllhoff Verbindungstechnik GmbH Tool holder
CN108856741A (en) * 2017-05-16 2018-11-23 伯尔霍夫连接技术有限公司 knife rest
US10919084B2 (en) * 2017-05-16 2021-02-16 Böllhoff Verbindungstechnik GmbH Tool holder

Also Published As

Publication number Publication date
KR101392965B1 (en) 2014-05-08

Similar Documents

Publication Publication Date Title
KR101819902B1 (en) Self piercing rivet device and rivet supply unit thereof
KR101265966B1 (en) Self piercing rivet
KR101392965B1 (en) Self piercing rivet device and anvil unit thereof
KR101689572B1 (en) Self-piercing rivet
KR20180022498A (en) Resistance element welding method using vibration
KR101641060B1 (en) Self piercing rivet device
KR101516357B1 (en) Self piercing rivet
KR20110131826A (en) Self-piercing rivet system
KR101505910B1 (en) Self piercing rivet device
KR20130069204A (en) Anvil unit for self-piercing rivet system and used the same
KR20180076183A (en) Self piercing rivet and bonding method using thereof
KR101749491B1 (en) Self piercing rivet device and anvil unit thereof
KR101376965B1 (en) Self piercing rivet
KR101543244B1 (en) Rivet feeding device and self piercing rivet system having the same
KR102133985B1 (en) Adhering structure of different kinds materials
KR101376966B1 (en) Self piercing rivet
KR20160080364A (en) Self piercing rivet, and method for joining using the same
KR101883675B1 (en) Rivet for Resistance element welding using vibration
KR101622959B1 (en) Self piercing rivet
KR102063043B1 (en) Self piercing rivet device
KR20180044624A (en) Self piercing rivet of helical
KR101376964B1 (en) Self piercing rivet
KR20170068821A (en) Hole cutting device
KR101808242B1 (en) Punch unit for self piercing rivet device
KR20150080349A (en) Self piercing rivet device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20180918

Year of fee payment: 5