KR101252038B1 - Apparatus for ultrasonic fusion having piercing function - Google Patents

Abstract

PURPOSE: An ultrasonic fusion apparatus having a piercing function is provided to perform the work forming a fitting hole on a processed article together with the work fusion-fixing parts on the periphery of the fitting hole by using only one apparatus. CONSTITUTION: An ultrasonic fusion apparatus(100) having a piercing function comprises a frame(110), a settling unit(130), an ultrasonic wave oscillator, an ultrasonic wave piercing unit(150), an ultrasonic wave fusion unit(160) and a control unit. The ultrasonic piercing unit forms a fitting hole on a processed article by converting the electrical energy into mechanical vibration energy. The ultrasonic fusion unit converts electric energy into mechanical vibration energy for the parts fitted into the fitting hole to be fusion-fixed.

Description

Ultrasonic welding device with piercing function {APPARATUS FOR ULTRASONIC FUSION HAVING PIERCING FUNCTION}

The present invention relates to an ultrasonic welding device, and more particularly, to form a hole in a workpiece and to fusion-fix a part in a hole in one welding device, thereby simplifying the assembly process of the product. And it relates to an ultrasonic welding device having a piercing function that can reduce the cost of equipment investment.

In general, the interior and exterior materials of the automotive parts are completed by combining a variety of parts. Therefore, one interior component or exterior component is formed through the operation of combining the individual components integrally. In this work, the parts are integrally joined to each other by various methods such as bonding by applying heat or generating ultrasonic waves.

Among these joining methods, a welding machine using ultrasonic waves is a device for fusion welding a workpiece using vibration of sound waves, and generates electrical energy of ultrasonic waves with an oscillator, converts it into mechanical vibration energy through a converter and a booster, and then a tool horn. When transmitted to the workpiece through the instantaneous generation of frictional heat due to the strong vibration is the bonding surface of the workpiece is fused and bonded. An example of such an ultrasonic fusion machine is disclosed in Korean Patent Publication No. 10-0797890 (2008.01.18).

On the other hand, in order to join the parts to each other to form a hole in which a fastening part or a fixing projection is inserted to improve the coupling force of the parts, in order to form this hole a separate piercing device for forming the hole by mounting the parts Should be provided. One example of such a piercing device is disclosed in Korean Patent Laid-Open Publication No. 10-1999-0078468 (1999.11.05).

After forming a hole using the piercing device as described above, by fusion operation using the ultrasonic welding device as described above by overlapping the individual parts, it is to form a single internal component.

As described above, in order to form one vehicle interior component or exterior component, at least two or more components are combined by an ultrasonic welding operation. Before this welding operation, a piercing operation for forming a hole must be performed by a separate piercing device. Since it is a process, each apparatus is required for each ultrasonic welding operation and piercing operation, so that a lot of equipment cost is required, and production efficiency is lowered due to many working processes.

Accordingly, the present invention has been made to solve the above problems, to form a hole in the workpiece, to enable the piercing operation and fusion operation to fusion-fix the parts in the hole, simplifying the assembly process of the product It is an object of the present invention to provide an ultrasonic welding device having a piercing function that can reduce the equipment investment cost for product assembly.

One embodiment of the present invention for achieving the above object, the frame constituting the structure, the workpiece is mounted, the seating portion is installed to reciprocate in the frame, and provided in the frame to the electrical energy of the ultrasonic wave An ultrasonic oscillator for generating the ultrasonic wave, an ultrasonic piercing unit for converting the electrical energy into mechanical vibration energy to form a fitting hole in the workpiece, and converting the electrical energy into mechanical vibration energy and fitting into the fitting hole An ultrasonic fusion unit for fusion-fixing parts to the workpiece, moving means for reciprocating the mounting portion between the ultrasonic piercing unit and the ultrasonic fusion unit, the ultrasonic oscillator, ultrasonic piercing unit, ultrasonic fusion unit, It is preferable to include a control unit for controlling the operation.

The seating part may include a seating frame forming an outer shape, a plurality of seating members fixed to the seating frame, on which the workpiece is seated, a first cylinder for raising and lowering the seating frame, and the seating frame and the first cylinder. It is preferable to include a support frame that supports the combination.

The ultrasonic piercing unit includes a plurality of ultrasonic punches electrically connected to the ultrasonic oscillator to generate mechanical energy to form a plurality of fitting holes in the workpiece, and a plurality of piercings for supporting the workpiece under the plurality of ultrasonic punches. It is preferable to include a die.

In addition, the plurality of ultrasonic punches are configured to be lifted by a plurality of third cylinders fixed to the frame, respectively, it is preferable to be configured to be fixed and lifted by a connecting bracket coupled to each of the plurality of third cylinders to be elevated. .

The ultrasonic fusion unit may include: a plurality of fusion tool horns for fusion-splicing a part to a fitting hole of a workpiece in the ultrasonic piercing unit; A plurality of fourth cylinders fixed to the fixing brackets and configured to face the plurality of welding tool horns in the vertical direction, respectively, and the plurality of holding members for holding the workpiece during the welding operation. It is preferable to include.

The holding member may be coupled to the connecting bracket by being spaced apart from the ultrasonic punch by a predetermined distance, and configured to be elevated by an operation of the third cylinder.

The holding member may further include a fixing member fixed to an end of the connecting bracket, and a pressing member coupled to and lowered by the fixing member to press and support the workpiece from the opposite side of the fusion tool cone.

In addition, the moving means is preferably provided on the bottom of the frame, the guide member for guiding the movement of the seating portion, and the second cylinder for reciprocating the ultrasonic piercing portion and the ultrasonic welding portion to the seating portion.

In addition, the frame is preferably provided with at least one holder for receiving the parts fixed by ultrasonic welding to the workpiece.

According to the present invention, the work of forming the fitting hole in the workpiece and the operation of fusion fixing the parts around the fitting hole of the workpiece in one apparatus can reduce the equipment investment cost, Productivity can be improved.

In addition, there is an effect that can simplify the operation of the wire due to the reduced installation space.

1 is a front view showing an ultrasonic welding device having a piercing function according to an embodiment of the present invention.
Fig. 2 is a side view of Fig. 1; Fig.
Figure 3 is a detailed cross-sectional view of the ultrasonic piercing portion in FIG.
Figure 4 is a detailed cross-sectional view showing the ultrasonic welding portion in FIG.
5 to 9 are cross-sectional views showing an operating state of forming a hole in a workpiece.
10 to 15 are cross-sectional views of fusion and fixing the holder in the fitting hole of the workpiece.

Specific embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

For reference, FIG. 1 is a front view showing an ultrasonic welding device having a piercing function according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a detailed cross-sectional view of the ultrasonic piercing unit in FIG. 1. Figure 4 is a detailed cross-sectional view showing the ultrasonic welding portion in Figure 1, Figures 5 to 9 is a cross-sectional view showing the operating state of forming a hole in the workpiece, Figures 10 to 15 is the welding at the same time to fit the holder in the workpiece hole It is a section to fix.

As shown, the ultrasonic welding device 100 having a piercing function according to an embodiment of the present invention forms a fitting hole 310 to fusion-fix another separate component (P) to the bumper which is the workpiece 300 It has a function to do, including the frame 110, ultrasonic oscillator 120, seating unit 130, moving means 140, ultrasonic piercing unit 150, ultrasonic fusion unit 160, the control unit 200 do.

Here, the ultrasonic welding device 100 according to an embodiment of the present invention is a bumper (hereinafter referred to as' working object) in order to fix the plurality of holders to the bumper to couple the plurality of rear sensing sensors to the bumper. After forming a plurality of fitting holes 310 for each of the holders (hereinafter referred to as 'parts') in the fitting, and then insert the parts (P) in the fitting holes 310, the parts (P) The device is configured to fusion-fix the fitting hole 310.

First, the ultrasonic welding device 100 according to an embodiment of the present invention includes an ultrasonic oscillator 120 for generating electrical energy of ultrasonic waves in the frame 110, and attaches a holder which is a part to a bumper that is a workpiece 300. An ultrasonic piercing unit 150 for forming a fitting hole 310 for fitting the holder to the bumper before fusion and fixing is provided.

The seating part 130 is for seating the workpiece 300 in which the piercing and fusion work is performed, and is moved in the front and rear direction of the frame 110 by the moving means 140 which will be described later provided at the bottom of the frame 110. It is composed.

That is, the seating unit 130 is configured to reciprocate the ultrasonic piercing unit 150 and the ultrasonic welding unit 160 to be described later by the moving means 140.

The seating part 130 is formed in a rectangular frame shape and forms a seating frame 131 that forms an outer shape, and a plurality of seating members 132 fixed to the seating frame 131 to support the inner surface of the bumper, which is the workpiece 300. The support frame 134 is fixed to the lower portion of the seating frame 131 to support the first cylinder 133 for raising and lowering the seating frame 131, and the seating frame 131 and the first cylinder 133 in combination. ).

Here, since the seating frame 131 is configured to be supported by the seating member 132 in a state in which the inner surface of the bumper faces downward, it is preferable that the seating frame 131 is formed in a gentle arc shape.

The first cylinder 133 is an ultrasonic fusion unit 160 or ultrasonic piercing unit described later by the workpiece 300 when moving the seating frame 131 back and forth after the workpiece 300 is seated on the seating member 132 It is for raising and lowering the seating frame 131 so as not to interfere with the 150, and is vertically erected from the bottom of the seating frame 131 is fixed to the bottom of the frame 110 is configured.

Here, the support frame 134 is composed of the components constituting the mounting portion 130 so that the mounting portion 130 can be moved to the front and rear of the frame 110 by the moving means 140 to be described later as one component It will play a role.

As described above, the workpiece 300 seated on the seating portion 130 is moved to the ultrasonic piercing portion 150 provided at the rear of the frame 110 by the moving means 140 for moving the seating portion piercing processing Configured to be made. That is, the seating unit 130 is linearly moved by the moving unit 140, but is configured to reciprocate the ultrasonic fusion unit 160 and the ultrasonic piercing unit 150 to be described later.

Here, the moving means 140 is provided at the bottom of the frame 110, is fixed in the front and rear direction of the frame 110, the guide member 141 for guiding the movement of the seating portion 130, and the support frame 134 It is coupled to the mounting portion 130 includes a second cylinder 142 to reciprocate in the front and rear direction of the frame 110.

That is, the second cylinder 142 is installed in the front-rear direction of the frame 110 and configured to move the seating part 130 in the front-rear direction.

In addition, the ultrasonic piercing unit 150 converts the electrical energy of the ultrasonic wave generated by the ultrasonic oscillator 120 into mechanical vibration energy while applying vibration to the workpiece 300 according to a change in the frequency cycle. It is configured to form a plurality of fitting holes 310 for fitting).

The ultrasonic piercing unit 150 is electrically connected to the ultrasonic oscillator 120 and generates a plurality of ultrasonic punches 151 for forming a plurality of fitting holes 310 in the workpiece 300 by generating mechanical energy. It includes a plurality of piercing die 152 which is provided on the lower side of the ultrasonic punch 151, which is mounted on the seating portion 130 to support the workpiece 300 to be moved to the lower side of the ultrasonic punch 151 from below.

In addition, the plurality of ultrasonic punches 151 are configured to be lifted by a plurality of third cylinders 170 fixed to the rear of the frame 110, respectively coupled to the plurality of rods of the plurality of third cylinders 170 It is fixed to the connecting bracket 171 is configured to be elevated.

Here, the connecting bracket 171 coupled to the rod of the third cylinder 170 is guided by the guide portion 173 is configured to be raised and stable.

The plurality of piercing dies 152 may be positioned at a distance spaced downward from the plurality of third cylinders 170 by a predetermined distance, and configured to be positioned at positions facing the plurality of ultrasonic punches 151, respectively.

In addition, the piercing die 152 is formed to protrude upward from the other end of the fixing bracket 172, one end of which is fixed to the rear of the frame 110.

On the other hand, the workpiece 300 in which the fitting hole 310 is formed in the ultrasonic piercing unit 150 is moved to the ultrasonic welding unit 160 by the moving unit 140 in a state of being seated on the seating unit 130, that is, the frame It is moved to the front of the 110 to fusion-fix the part (P) is made.

The ultrasonic fusion unit 160 includes a plurality of fusion tool horns 161 for fusion fixing the parts P to the fitting holes 310 of the workpiece 300 formed by the ultrasonic piercing unit 150, and a plurality of fusion tool horns. A plurality of fixed brackets 162 respectively coupled to the frame 110 so as to elevate the 161, and a third cylinder 163 fixed to the fixed bracket 162 to vertically elevate the fusion tool horn 161. And a holding member 164 configured to face the fusion tool horn 161 and holding the workpiece 300 during the fusion operation.

The fusion tool horn 161 converts electrical energy generated from the ultrasonic oscillator 120 into mechanical vibration energy to fit the component P into the fitting hole 310 of the workpiece 300 and simultaneously insert the component P into the fitting hole 310. It serves to fusion-fix the 310.

Here, before the worker 300 seats the workpiece 300 on the seating portion 130 of the ultrasonic welding device 100, the worker temporarily sets the component P to be fused to the workpiece 300 to the fusion tool horn 161. do.

That is, when the operator temporarily seats the component P on the fusion tool horn 161 and seats the workpiece 300 on the seating portion 130, the ultrasonic welding device 100 is operated to provide a seating portion ( After the component P seated on the 130 is moved to the ultrasonic piercing unit 150 to form a fitting hole 310 and the workpiece 300 is moved to the ultrasonic welding unit 160 again, the upper surface of the workpiece 300 That is, the holding member 164 is pressurized at the upper portion of the fitting hole 310, and the fusion tool horn 161 is raised together with the component P at the lower portion of the workpiece 300 to insert the fitting hole 31 of the workpiece 300. ) Is to be configured to be fused and fixed at the same time fitting the component (P).

The upper end of the fusion tool horn 161 is formed with a protrusion for temporarily mounting the component (P).

In addition, the fixing bracket 162 is fixed to one side of the support member provided perpendicular to the frame 110 when coupled to the frame 110.

Here, the holding member 164 is provided in the connecting bracket 171 to which the piercing punch 151 of the fusion piercing unit 150 described above is fixed, and the fixing member 164a fixed to the end of the connecting bracket 171. And a pressing member 164b coupled to the fixing member 164a to be lowered and supporting the upper surface of the workpiece 300.

In addition, the frame 110 is provided with at least one holder 180 containing the components. That is, provided with a storage box 180 containing the component (P) between the second cylinder 170 is fixed to the rear of the frame 110, the workpiece (P) 300 with the ultrasonic welding device 100. It is configured to quickly set the component (P) to the fusion tool horn 161 during the operation of fusion.

Here, the first to fourth cylinders may be configured as hydraulic cylinders driven by hydraulic pressure, but in consideration of the installation cost, it is more preferable to configure the air cylinder. The air pump for supplying air to the first to fourth cylinders is configured to be connected to a pipe after being installed in a frame or separately installed, and to supply air.

In addition, the controller 200 controls the operation of various components such as the ultrasonic oscillator 120, the ultrasonic piercing unit 150, the ultrasonic fusion unit 160, and the like.

In addition, the controller 200 may control the ultrasonic punch during the control of the third cylinder 142 which lowers the ultrasonic punch 151 during the piercing operation in which the ultrasonic piercing unit 150 forms the fitting hole 310 in the workpiece 300. 151 is programmed to allow it to stop in proximity without touching the piercing die 152. In addition, the control unit 200 is preferably pre-programmed and set the operation sequence for the lifting and back movement of the seating unit 130 and the operation order of the ultrasonic piercing unit 150 and the ultrasonic welding unit 160.

An operation of the ultrasonic welding device having a piercing function according to an embodiment of the present invention having the above configuration will be described with reference to FIGS. 5 to 15.

First, a process of seating a bumper, which is a workpiece in an ultrasonic welding device, on a seating part and forming a fitting hole for fitting a part in the ultrasonic piercing part will be described.

Here, the operator places the parts P, ie holders, to be fused and fixed to the bumper on the fusion tool horn 161 of the ultrasonic fusion unit 160 before the bumper, which is the workpiece 300, is placed on the seating unit 130. Then, take the bumper which is the object of piercing and fusion processing, and put it on the mounting portion 130, as shown in FIG. That is, the seating member 132 of the seating portion 130 is in contact with the inside of the bumper is seated on the seating portion 130 in the convex curved portion of the bumper facing upward.

After that, the operator operates the ultrasonic welding device 100 in the control unit 200.

Then, the first cylinder 133 of the seating unit 130 is operated to raise the seating member 132 on which the bumper is raised as shown in FIG. 6. Thereafter, the second cylinder 142 of the movement means 140 is operated to move the seating portion 130 on which the bumper is seated to the rear of the frame 110 as shown in FIG. 7. After the seating unit 130 is moved to the ultrasonic piercing unit 150 provided at the rear of the frame 110, the first cylinder 133 of the seating unit 130 is operated again to mount the seating frame (see FIG. 8). 131) is lowered.

When the bumper seated on the seating unit 130 is positioned between the ultrasonic punch 151 of the ultrasonic piercing unit 150 and the piercing die 152 and the inner side of the bumper is supported by the piercing die 152, the third cylinder 170 is operated, as shown in FIG. 9, the ultrasonic punch 151 is lowered to pierce the bumper to form a plurality of fitting holes 310.

Thereafter, as shown in FIG. 10, after the ultrasonic punch 151 is raised by the operation of the third cylinder 170, the first cylinder 133 is operated to move the seating member 132 to a predetermined height as shown in FIG. 11. Raise. Then, the second cylinder 142 of the moving means 140 is operated to move the seating portion 130 to the front of the frame 110, that is, the ultrasonic welding portion 160 as shown in FIG.

Thereafter, the first cylinder 133 of the seating unit 130 is operated, and as shown in FIG. 13, when the seating member 132 is lowered, the third cylinder 170 is operated to be provided at the end of the connecting bracket 171. When the holding member 164 of the ultrasonic welding unit 160 is lowered as shown in FIG. 14 to press and hold the upper surface of the bumper, the fourth cylinder 163 of the ultrasonic welding unit 160 is operated to operate as shown in FIG. 15. The fusion tool horn 161 is raised.

At this time, the holder (P) seated on the upper end of the fusion tool horn 161 is fitted into the fitting hole 310 formed in the bumper and at the same time the mechanical vibration energy generated from the fusion tool horn 161 of the bumper The fitting hole 310 is fixed while being fused around the inner side.

As described above, by performing the work of forming the fitting hole in the workpiece and the operation of fusion-fixing the parts around the fitting hole of the workpiece in one apparatus, it is possible to reduce the equipment investment cost, the productivity of the product due to the process shortening To improve.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is merely exemplary, and those skilled in the art to which the art belongs may have various modifications and other equivalent embodiments therefrom. I understand that it is possible. Accordingly, the true scope of the present invention should be determined by the following claims.

100: ultrasonic welding device 110; frame
120: ultrasonic oscillator 130; Seat portion
140: moving means 150; Ultrasonic piercing
160: ultrasonic welding unit 170: the third cylinder
200: control unit 300: workpiece
P: Parts

Claims (9)

The frame forming the structure,
A seating part on which a workpiece is mounted and installed to reciprocate to the frame;
An ultrasonic oscillator provided in the frame to generate electrical energy of ultrasonic waves;
An ultrasonic piercing unit for converting the electrical energy into mechanical vibration energy to form fitting holes in the workpiece;
An ultrasonic welding unit for converting the electrical energy into mechanical vibration energy to fusion-fix the component fitted in the fitting hole to the workpiece;
Moving means for reciprocating the mounting portion between the ultrasonic piercing portion and the ultrasonic welding portion;
A control unit for controlling the operation of the ultrasonic oscillator, ultrasonic piercing unit, ultrasonic fusion unit, moving means;
Ultrasonic welding device having a piercing function comprising a. The method of claim 1,
The seat (1)
Seating frame to form an appearance,
A plurality of seating members fixed to the seating frame on which the workpiece is seated;
A first cylinder for raising and lowering the seating frame;
A support frame supporting the seating frame and the first cylinder by combining the seating frame and the first cylinder;
Ultrasonic welding device having a piercing function comprising a. The method of claim 1,
The ultrasonic piercing unit,
A plurality of ultrasonic punches electrically connected to the ultrasonic oscillator to generate mechanical energy to form a plurality of fitting holes in the workpiece, respectively;
A plurality of piercing dies for supporting the workpiece under the plurality of ultrasonic punches;
Ultrasonic welding device having a piercing function comprising a. The method of claim 3,
The plurality of ultrasonic punches,
Is configured to be lifted by each of the plurality of third cylinder fixed to the frame,
Ultrasonic fusion apparatus having a piercing function, characterized in that configured to be fixed by the connecting bracket which is coupled to each of the plurality of lifting the lifting cylinder. The method of claim 1,
The ultrasonic fusion unit,
A plurality of fusion tool horns for fusion-splicing the parts in the fitting holes of the workpiece in the ultrasonic piercing part;
A fixing bracket for respectively coupling the plurality of fusion splicing tool cones to the frame,
A plurality of fourth cylinders fixed to the fixing brackets to lift the plurality of fusion tool horns in a vertical direction, respectively;
A plurality of holding members configured to face the plurality of fusion tool horns, respectively, for holding the workpiece during the welding operation;
Ultrasonic welding device having a piercing function comprising a. The method according to claim 4 or 5,
The holding member,
It is coupled to the connecting bracket by being spaced apart from the ultrasonic punch by a certain distance,
Ultrasonic welding device having a piercing function, characterized in that configured to be elevated by the operation of the third cylinder. The method according to claim 6,
The holding member,
A fixing member fixed to an end of the connecting bracket;
A pressing member coupled to the fixed member so as to be lifted and lowered to support the workpiece from the opposite side of the fusion tool hole;
Ultrasonic welding device having a piercing function comprising a. The method of claim 1,
Wherein,
A guide member provided at the bottom of the frame to guide movement of the seating part;
A second cylinder for reciprocating the ultrasonic piercing unit and the ultrasonic piercing unit;
Ultrasonic welding device having a piercing function comprising a. The method of claim 1,
In the frame,
Ultrasonic welding device having a piercing function, characterized in that the at least one holder for receiving the parts fixed by ultrasonic welding to the workpiece is provided.

Images