CN109261881A

CN109261881A - High speed nailing attachment device and connection method

Info

Publication number: CN109261881A
Application number: CN201811275960.3A
Authority: CN
Inventors: 邓将华; 龚成鹏; 黄佳成; 吕枫; 范治松
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2019-01-25

Abstract

The present invention relates to a kind of high speed nailing attachment device and connection methods, including shell, cylinder inside the shell is set, cylinder is vertically arranged, cylinder upper end connected with outer casing inner top, coil is from top to bottom disposed in cylinder, drive piece, formed punch, coil lower end is fitted closely with driving piece, the formed punch includes jumper bar, jumper bar upper end is provided with the rotary table of the coaxial heart, rotary table leans with driving piece, jumper bar lower end in the middle part of cylinder lower end by being pierced by, jumper bar lower end surface is provided with magnetic medium, outer casing underpart is provided with the punching passed through conducive to jumper bar lower end, spring is arranged on jumper bar, spring upper end is against rotary table, lower spring end is against cylinder, the present apparatus is by the way of electromagnetism power drive, curring time is short, connecting relay and connection energy can be adjusted by one-parameter and realize accurate control, realize the self-piercing riveting under different condition, Simple process, it is easy to accomplish the production of automation.

Description

High speed nailing attachment device and connection method

Technical field

The present invention relates to a kind of high speed nailing attachment device and connection methods, are related to automobile mechanical interconnection technique field.

Background technique

Attention with the fast development and countries in the world of automobile industry to energy source of car consumption and exhaust emissions, vapour Vehicle lightweight has become following development trend.The ratio that white body accounts for about vehicle total weight greatly increases, therefore various novel Lightweighting materials application, such as high-strength steel, aluminium alloy, fibrous composite, become the important means of body lightening.Tradition The connection types such as resistance spot welding, MIG weldering be difficult to ensure the quality of connection of light metal or dissimilar metal.And high speed nailing riveting conduct One kind of vehicle body interconnection technique has the characteristics that intensity is good, high-efficient, at low cost for aluminium-aluminium, the connection of steel-constructed of aluminium, and It is able to achieve single side connection, batch application is in the vehicle body connection of some automobiles, with the development of body lightening trend, this Kind interconnection technique has wide development space.Existing high speed nailing riveting technology is to accelerate piston striker by compressed air Rivet is hit, the speed for keeping rivet high is pushed down into workpiece.Due to the effect of inertia, rivet can not cause part overall deformation Under conditions of realize sheet part connection.

It is riveted although existing high speed nailing riveting equipment can complete high speed nailing under different condition, the power of equipment Source is still mainly using traditional air pressure, so that the room for promotion of riveted joint performance is limited after rivet forming, forming technology There is certain limitation.

Summary of the invention

The present invention proposes a kind of high speed nailing attachment device and connection method.

The solution adopted by the present invention to solve the technical problem is that a kind of high speed nailing attachment device, including shell, setting exist Cylinder in shell, cylinder are vertically arranged, cylinder upper end connected with outer casing inner top, are from top to bottom set gradually in cylinder wired Circle, driving piece, formed punch, coil lower end are fitted closely with driving piece, and the formed punch includes jumper bar, and jumper bar upper end is provided with same with it The rotary table in axle center, rotary table lean with driving piece, and rotary table diameter is equal with the driving diameter of piece, and jumper bar lower end is by cylinder lower end Portion is pierced by, and jumper bar lower end surface is provided with magnetic medium, and outer casing underpart is provided with the punching passed through conducive to jumper bar lower end, covers on jumper bar Equipped with spring, spring upper end is against rotary table, and lower spring end is against cylinder.

Further, the cylinder upper and lower side is not closed, and cylinder lower end is provided with backing plate, and setting is conducive to punching in the middle part of backing plate What bar passed through has through-hole, and lower spring end is against backing plate, and coil upper end is against shell.

Further, cylinder upper end periphery is provided with flange, and connecting screw hole A, shell upper side are evenly distributed on flange It is correspondingly arranged on the connection through-hole A matched with connecting screw hole A, cylinder is worn connection through-hole A and connect with connecting screw hole spiral shell A Fixing screws are locked inside the shell, and backing plate periphery is evenly distributed in connection through-hole B, and cylinder lower end is correspondingly arranged on and connect through-hole The connecting screw hole B that B is matched, backing plate are worn connection through-hole B and are locked at cylinder with the connecting screw hole B lock-screw being spirally connected On.

Further, flange periphery is disposed radially the cable-through hole A of a connection inner barrel, shell periphery be provided with The cable-through hole B that cable-through hole A is matched, two terminals of coil pass sequentially through cable-through hole A, cable-through hole B extraction.

Further, the shell includes the upper housing being mutually spirally connected, lower case, and cylinder is mounted in upper housing, punching It is arranged in the middle part of lower case lower end, cable-through hole B is arranged in upper housing upper periphery.

Further, upper housing upper end is provided with handle, and lower case periphery is provided with handle.

Further, the driving piece is cylindrical copper body, drives piece and formed punch according to can be in cylinder along axial cunning It is dynamic.

Further, the coil is the circular disk for being tied with copper wire, is drawn in the outermost layer of coil there are two terminals, one It holds the anode of power-supply system to be connected, is connected with the cathode of power-supply system.

Further, the power-supply system includes capacitor, power supply, and capacitor is controlled to a power supply through transformer, capacitor Device is connected with coil, and charge switch, rectifier and current-limiting resistance are provided in the connection line between capacitor and transformer, Discharge switch, charge switch, discharge switch connection switch control cabinet are provided in connection line between capacitor and coil.

A kind of connection method of high speed nailing attachment device:

Step 1: according to energy required in connection procedure and power, determining the discharge voltage size of power-supply system, predeterminated voltage, and Nailing is placed on to the lower section of formed punch；

Step 2: being closed charge switch by switch control box and charge to capacitor group, until charging terminates；

Step 3: being closed discharge switch by switch control box, discharge coil, so that generating strong around hot-wire coil Pulsed magnetic field, driving piece can generate vortex close to the side of coil under the action of the magnetic field, drive the vortex in piece by line The strong effect for enclosing magnetic field leads to that electromagnetic repulsive force can be generated between coil and driving piece, and driving piece is downward under that force Movement；

Step 4: the driving piece moved downward pushes formed punch to move down rapidly, and spring is compressed, and the formed punch moved down at a high speed, which acts on, to be penetrated Nail, nailing passes through the top plate for needing to connect and low layer plate completes connection；

Step 5: compressed recoil of spring makes that piece and formed punch is driven to reset rapidly after the completion of connection, for connection next time It prepares.

Compared with prior art, the invention has the following advantages: structure is simple, design rationally, is driven using electromagnetic force Dynamic mode, curring time is short (Millisecond), and the load of such high-speed reduces the deformation of connected part, improve at Form quality amount；Accurate control can be realized by one-parameter (such as voltage) by connecting relay and connection energy, be realized under different condition Self-piercing riveting, simple process, it is easy to accomplish the production of automation.

Detailed description of the invention

The invention patent is further illustrated with reference to the accompanying drawing.

Fig. 1 is the structural schematic diagram of the present apparatus；

Fig. 2 is the structural schematic diagram of upper housing；

Fig. 3 is the structural schematic diagram of lower case；

Fig. 4 is the structural schematic diagram of cylinder；

Fig. 5 is the structural schematic diagram of jumper bar；

Fig. 6 is the structural schematic diagram of power-supply system.

In figure:

1- fixing screws；2- upper housing；201- connection through-hole A；202- cable-through hole B；203- internal screw thread；204- handle；3- coil； 4- drives piece；5- formed punch；501- rotary table；502- jumper bar；6- cylinder；601- coil placing groove；602- connecting screw hole A；603- method It is blue；604- cable-through hole A；605- installation cavity；606- connecting screw hole B；7- spring；8- lock-screw；9- backing plate；10- lower case； 1001- column portion；The tapering 1002-；1003- punching；1004- guide sleeve portion；1005- handle；1006- external screw thread；11- nailing；The top 12- Laminate；13- bottom plate；14- capacitor group；15- transformer；16- power supply；17- rectifier；18- current-limiting resistance；19- charging is opened It closes；20- control cabinet；21- discharge switch.

Specific embodiment

The present invention is further described with reference to the accompanying drawings and detailed description.

As shown in figures 1 to 6, a kind of high speed nailing attachment device, including shell, are arranged cylinder inside the shell, and cylinder is vertical It is arranged, cylinder upper end connected with outer casing inner top, coil, driving piece, formed punch, coil lower end is from top to bottom disposed in cylinder It is fitted closely with driving piece, the formed punch includes jumper bar, and jumper bar upper end is provided with the rotary table of the coaxial heart, rotary table and driving piece It leans, rotary table diameter is equal with the driving diameter of piece, and by being pierced by the middle part of cylinder lower end, formed punch lower end surface is provided with for jumper bar lower end Magnetic medium, such as jumper bar lower end are embedded with magnet, pass through to adsorb nailing outer casing underpart and to be provided with conducive to jumper bar lower end Punching is arranged with spring on jumper bar, and spring upper end is against rotary table, and lower spring end is against cylinder.

In the present embodiment, the one side of coil is fitted closely with driving piece, can to generate in driving piece as big as possible Inductive loop, and then generate big electromagnetic repulsive force, can also improve capacity usage ratio；The another side and shell of coil paste It closes, so that coil is pressed in cylinder.

In the present embodiment, middle part setting is installed for accommodating the installation cavity of coil, driving piece, formed punch in cylinder upper end The coil placing groove of chamber top setting installation coil.

In the present embodiment, the cylinder upper and lower side is not closed, and cylinder lower end is provided with backing plate, setting benefit in the middle part of backing plate There is through-hole in what jumper bar passed through, lower spring end is against backing plate, and coil upper end is against shell.

In the present embodiment, cylinder upper end periphery is provided with flange, is evenly distributed in connecting screw hole A on flange, on shell Side is correspondingly arranged on the connection through-hole A matched with connecting screw hole A, cylinder worn connection through-hole A and with connecting screw hole spiral shell A Inside the shell, backing plate periphery is evenly distributed in connection through-hole B, and cylinder lower end is correspondingly arranged on and connects for the fixing screws locking connect The connecting screw hole B that through-hole B is matched, backing plate are worn connection through-hole B and are locked at cylinder with the connecting screw hole B lock-screw being spirally connected On body.

In the present embodiment, flange periphery is disposed radially the cable-through hole A of a connection inner barrel, the setting of shell periphery There is the cable-through hole B matched with cable-through hole A, two terminals of coil pass sequentially through cable-through hole A, cable-through hole B extraction.

In the present embodiment, the shell includes the upper housing being mutually spirally connected, lower case, and cylinder is mounted in upper housing, Punching is arranged in the middle part of lower case lower end, and cable-through hole B is arranged in upper housing upper periphery.

In the present embodiment, upper housing is the not closed circle-shaped shell in lower end, and lower end is provided with internal screw thread, lower case The not closed shell in upper end, lower case are from top to bottom disposed with column portion, up big and down small tapering, guide sleeve portion, punching setting Middle part is connected to shell inside and outside in guide sleeve portion, and external screw thread is arranged in column portion upper end periphery, and column portion is spirally connected with upper housing.

In the present embodiment, upper housing upper end is provided with handle, and lower case periphery is provided with handle.

In the present embodiment, the driving piece is cylindrical copper body, drives piece and formed punch according to can be in cylinder along axis To sliding.

In the present embodiment, the coil is the circular disk for being tied with copper wire, is drawn in the outermost layer of coil there are two wiring The anode at end, one end power-supply system is connected, and is connected with the cathode of power-supply system.

In the present embodiment, the power-supply system includes capacitor, power supply, and capacitor is controlled to a power supply through transformer, Capacitor is connected with coil, and charge switch, rectifier and current limliting are provided in the connection line between capacitor and transformer Resistance is provided with discharge switch, charge switch, the control of discharge switch connection switch in the connection line between capacitor and coil Case.

A kind of connection method of high speed nailing attachment device:

Present apparatus curring time is short (Millisecond), and the load of such high-speed reduces the deformation of connected part, favorably In the forming quality improved.

Present apparatus attachment force and connection energy can be adjusted by one-parameter (such as voltage) realizes accurate control, technique letter It is single, it is easy to accomplish the production of automation.If the type of connector and the thickness of connector change, it can directly pass through tune The size for saving one-parameter (such as voltage) changes the riveting energy and rivet force of output, realizes that the high speed nailing under different condition connects It connects.

The present apparatus has widened the process window of high speed nailing connection by the way of electromagnetism power drive.

Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims

A high-speed nail connection device, comprising: a casing, a cylinder disposed in the casing, the cylinder body being vertically disposed, the upper end of the cylinder body being connected to the top of the casing, and the coil body is arranged in turn from top to bottom a driving piece and a punch, the lower end of the coil is closely attached to the driving piece, the punch comprises a punching rod, and the upper end of the punching rod is provided with a circular table coaxial with the same, the round table abuts against the driving piece, and the lower end of the punching rod is from the middle of the lower end of the barrel Throughout, the lower end surface of the punch is provided with a magnetic medium, and the lower part of the outer casing is provided with a punching hole which is favorable for the lower end of the punching rod. The punching rod is sleeved with a spring, the upper end of the spring abuts against the round table, and the lower end of the spring abuts against the cylindrical body.

2 . The high-speed nail connection device according to claim 1 , wherein the upper and lower ends of the cylinder are not closed, and the lower end of the cylinder is provided with a pad, and the middle portion of the pad is provided with a through hole for facilitating the passage of the punch. The lower end of the spring abuts against the backing plate, and the upper end of the coil abuts against the outer casing.

The high-speed nail connection device according to claim 2, wherein the outer circumference of the upper end of the cylinder is provided with a flange, and the upper circumference of the flange is uniformly provided with a connection screw hole A, and the upper side surface of the outer casing is correspondingly provided with a connection screw hole. The A-phase is connected to the through-hole A, and the cylinder is locked in the outer casing by a fixing screw connected to the through hole A and connected to the screw hole A. The outer circumference of the pad is uniformly connected with the connecting hole B, and the lower end of the cylinder Correspondingly, a connecting screw hole B is provided which is matched with the connecting through hole B, and the pad is locked on the cylindrical body through a locking screw which is connected to the connecting through hole B and screwed to the connecting screw hole B.

The high-speed nail connection device according to any one of claims 1 to 3, characterized in that: the outer circumference of the flange is provided with a wire hole A communicating with the inside of the cylinder in the radial direction, and the outer circumference of the outer casing is provided with the wire hole The A-phase matching wire hole B, the two terminals of the coil are sequentially taken out through the wire hole A and the wire hole B.

The high-speed nail connecting device according to claim 4, wherein the outer casing comprises an upper casing and a lower casing which are screwed to each other, the cylinder is installed in the upper casing, and the punching hole is disposed at a lower end of the lower casing. In the middle, the wire hole B is disposed on the outer periphery of the upper portion of the upper casing.

6. The high speed nailing connection device according to claim 4, wherein the upper end of the upper casing is provided with a handle, and the outer periphery of the lower casing is provided with a handle.

7. The high speed nail attachment device according to claim 4, wherein the driving piece is a cylindrical copper body, and the driving piece and the punch are slidable in the axial direction inside the barrel.

The high-speed nail connection device according to claim 4, wherein the coil is an annular disk wrapped with a copper wire, and two terminals are connected at the outermost layer of the coil, and the positive pole of the power supply system at one end Connected to the negative terminal of the power system.

The high-speed nail connection device according to claim 8, wherein the power supply system comprises a capacitor, a power source, a capacitor connected to the power source via a transformer, a capacitor connected to the coil, and a connection line between the capacitor and the transformer. A charging switch, a rectifier and a current limiting resistor are arranged on the connection line, and a discharge switch is arranged on the connection line between the capacitor and the coil, and the charging switch and the discharging switch are connected to the switch control box.

10. A method of connecting a high speed nail attachment device, using the high speed nail attachment device of claim 9, wherein:

Step 1: According to the energy and force required in the connection process, determine the discharge voltage of the power system, preset the voltage, and place the nail under the punch;

Step 2: The capacitor bank is charged by closing the charging switch through the switch control box until the charging is completed;

Step 3: The discharge switch is closed by the switch control box, and the coil is discharged, so that a strong pulse magnetic field is generated around the energized coil, and the side of the driving piece close to the coil generates eddy current under the action of the magnetic field, and the eddy current in the driving piece is subjected to the coil. The strong action of the magnetic field causes an electromagnetic repulsive force to be generated between the coil and the driving piece, and the driving piece moves downward under the force;

Step 4: The driving piece that moves downward pushes the punch to move down quickly, the spring is compressed, the punch that moves at a high speed acts on the nail, and the nail passes through the top plate and the low layer that need to be connected to complete the connection;

Step 5: The spring rebound after the connection is completed causes the drive and the punch to be quickly reset to prepare for the next connection.