JP2577274Y2 - Ultrasonic processing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic processing apparatus for performing processing such as ultrasonic welding, and more particularly to an ultrasonic processing apparatus suitable for processing a plurality of close places.

[0002]

2. Description of the Related Art Conventionally, an ultrasonic vibrator having a fixed horn is attached to a fixed frame whose vertical position is set in advance so as to be able to move up and down, and an air cylinder which drives the ultrasonic vibrator to move up and down on the fixed frame. An ultrasonic processing apparatus having a structure in which is fixed is generally known.

[0003]

In the conventional ultrasonic machining apparatus, the mechanism for supporting the ultrasonic vibrator so as to be able to move up and down and the mechanism for driving the ultrasonic vibrator to move up and down are completely separate members. Therefore, the apparatus configuration becomes complicated and the cost increases, and the ultrasonic transducer is exposed to the outside, so that the fixed frame must be provided with a cover that covers the periphery of the ultrasonic transducer. In addition to the complicated structure of the device, there are certain restrictions on the miniaturization of the device, which is a serious problem in actual work.

[0004] That is, for example, in automobile parts and the like,
Many parts must be machined in close proximity, but when trying to machine such workpieces with conventional equipment, the equipment will come into contact with each other and not all parts can be machined simultaneously. is there.

Conventionally, in such a case, only a portion which can be processed at the same time is processed first, and the remaining portion is processed in the next process. In the worst case, the processing may not be completed within a predetermined processing time, and the speed of the entire line may have to be reduced.

The present invention has been made in view of such a situation, and it is possible to simplify the apparatus configuration to achieve downsizing and cost reduction, and to perform processing simultaneously without any trouble even when processing parts are close to each other. It is an object of the present invention to provide an ultrasonic processing apparatus capable of performing the above.

Another object of the present invention is to provide an ultrasonic processing apparatus capable of moving up and down a lifting shaft with a large stroke and expanding an applicable range.

Another object of the present invention is to provide an ultrasonic machining apparatus capable of stabilizing the elevating shaft with a simple structure.

Another object of the present invention is to provide an ultrasonic processing apparatus capable of sufficiently cooling an ultrasonic vibrator.

It is still another object of the present invention to provide an ultrasonic processing apparatus capable of easily adjusting a pressure applied to a workpiece only by replacing some parts.

[0011]

According to the present invention, as a means for achieving the above object, there is provided an elevating shaft having an ultrasonic vibrator incorporated in a lower end thereof; fixed to a fixed side at an outer peripheral portion of the elevating shaft. And a drive mechanism for driving the elevating shaft up and down, respectively , and the elevating shaft is formed in a cylindrical shape with upper and lower ends closed, and
Air inlets and outlets for cooling the ultrasonic transducer are provided at the upper and lower ends.
It is characterized by being provided respectively.

In the present invention, the driving mechanism is
Both locks equipped with pistons with the lifting shaft as the piston rod
Preferably Rukoto forming structure in de form of a fluid pressure cylinder.

Further, the elevator shaft, it is preferable that the upper rod via a piston and a lower rod structure which is a separate body.

Further , it is preferable that the drive mechanism is constituted by an electromagnet which lowers by an electromagnetic attraction force using the lifting shaft as a plunger, and a return spring which raises the lifting shaft.

[0015]

In the ultrasonic machining apparatus according to the present invention, the ultrasonic vibrator is incorporated inside the lower end of the elevating shaft, and the elevating shaft is driven up and down by a direct drive mechanism. For this reason, the drive mechanism of the ultrasonic vibrator also serves as a support mechanism and also serves as a cover, so that the configuration of the apparatus is simplified, and miniaturization and cost reduction can be achieved. Also, simultaneous processing is possible even when the processing location is close.

Further, by forming the elevating shaft in a cylindrical shape with the upper and lower ends closed, it becomes easy to incorporate the ultrasonic vibrator and to reduce the weight. Further, by providing the air inlets and outlets at the upper and lower ends of the elevating shaft, a sufficient chimney effect can be obtained, and the ultrasonic vibrator can be sufficiently cooled without providing a special forced cooling mechanism. .

In the present invention, the drive mechanism is a double rod provided with a piston using the elevating shaft as a piston rod.
By using a hydraulic cylinder of the shape , it is possible to raise and lower the elevating shaft with a large stroke.For example, it can be applied to the processing of the bottom of a deep hole without any trouble, and the applicable range can be expanded. It becomes possible. Also elevate
Even if the axis stroke is increased,
It can be stabilized, and the rotation of the elevating shaft can be prevented.
A mechanism or the like can be easily attached.

Further, the elevator shaft, by the upper rod via a piston and a lower rod and the separate structure, with manufacture is facilitated by the outer径調clause of the upper rod, the pressure receiving area of the piston is changed Thus, it is possible to easily obtain the optimum pressing force by adjusting the pressing force. Also, the number of replacement parts at that time can be minimized.

Further , the drive mechanism is constituted by an electromagnet for lowering by an electromagnetic attraction force using a lift shaft as a plunger and a return spring for raising the lift shaft, so that the drive mechanism can be applied even when there is no fluid pressure source such as air. Becomes possible.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows an ultrasonic processing apparatus according to a first embodiment of the present invention. The ultrasonic processing apparatus 1 includes a double-acting double-acting air cylinder 2 and a piston rod of the air cylinder 2. And an ultrasonic vibrator 4 such as an electrostrictive vibrator is incorporated together with a fixed horn 5 inside the lower end of the vertical shaft 3.

As shown in FIGS. 1 and 2, the air cylinder 2 includes a cylinder tube 7 in which a piston 6 slides up and down, an upper rod cover 8 attached to an upper end of the cylinder tube 7, 7 is provided with a lower rod cover 9 attached to a lower end portion thereof and, for example, four tie rods 10 connecting the upper and lower rod covers 8 and 9. The upper rod cover 8 is used to lower the elevating shaft 3. The lower rod cover 9 is provided with an ascending port 12 for elevating the elevating shaft 3.

On the other hand, as shown in FIG. 1, the elevating shaft 3 has an upper rod 3a screwed above the piston 6.
And a lower rod 3b screwed on the lower side of the piston 6 to form a two-part structure.
b is formed of a cylindrical material having the same outer diameter.

As shown in FIGS. 1 and 2, the upper rod 3a has an upper end opening closed by a cap 13, and the upper rod 3a has a peripheral surface on the upper end side.
For example, four cooling air outlets 14 are provided. A mounting member 15 is mounted between the cooling air outlet 14 and the cap 13 by tightening a tightening screw 16, and a guide rod 17 fixed to the mounting member 15 is shown in FIG. As shown in FIG. 5, the guide rod 18 is inserted into a guide hole 18 provided in the upper rod cover 8. Thus, the rotation of the elevating shaft 3 is stopped, and a tool horn (not shown) attached to the fixed horn 5 is provided.
Even if there is a direction, the positioning can be performed accurately.

On the other hand, inside the lower end of the lower rod 3b, as shown in FIG. 1, with the lower end of the fixed horn 5 protruding from the lower rod 3b, the ultrasonic vibration integrated with the fixed horn 5 is formed. The fixed flange 5a of the fixed horn 5 is screwed into the lower end of the lower rod 3b, so that the fixed flange 5a of the fixed horn 5 is screwed into the lower end of the lower rod 3b. It is to be clamped and fixed between the parts.

On the peripheral surface on the lower end side of the lower rod 3b,
As shown in FIGS. 1 and 2, for example, four cooling air inlets 20 are provided, flow into the elevating shaft 3 from each of the cooling air inlets 20, and are discharged from the respective cooling air outlets 14 to the outside. The ultrasonic vibrator 4
Is to be cooled.

Next, the operation of this embodiment will be described.
At the time of ultrasonic machining, first, the air cylinder 2 is fixed to a fixed side such as a fixed frame (not shown), and a tool horn (not shown) is attached to a lower end of the fixed horn 5.

In this state, high-pressure air is supplied to the descending port 11 to lower the piston 6. Then, as shown in FIG. 1, the elevating shaft 3 integrated with the piston 6 is also lowered, and the tool horn is pressed against the workpiece with a predetermined pressure, and desired ultrasonic processing, for example, ultrasonic welding is performed.

In this ultrasonic machining, the tool horn is usually set so that the tool horn comes into contact with the workpiece before the piston 6 descends to the bottom dead center. It is adjusted by the pressure of high pressure air.

When the ultrasonic processing is completed, high-pressure air is supplied to the ascending port 12 to raise the piston 6. Then, the elevating shaft 3 integral with the piston 6 also moves up and returns to the original state. Thereafter, the above-described operation is repeated to perform ultrasonic processing.

Since the ultrasonic vibrator 4 and the fixed horn 5 are incorporated inside the lower end of the elevating shaft 3, and the elevating shaft 3 is directly driven by the air cylinder 2 as a piston rod. The configuration is greatly simplified, and the size and cost of the device can be reduced. And the ultrasonic processing device 1
Can be arranged close to each other, and even when a plurality of processing locations are close to each other, processing can be performed simultaneously without any trouble.

Further, since the ultrasonic vibrator 4 is incorporated in the elevating shaft 3, a cover is not required, and a cylindrical shape which is longer and shorter than the ultrasonic vibrator 4 is installed in the open space. When installed in the elevating shaft 3, the flow of cooling air increases due to the chimney effect, and the ultrasonic vibrator 4 can be cooled more effectively.

Further, since the air cylinder 2 is of a double-acting type, the elevating stroke of the elevating shaft 3 can be lengthened.
For example, even when processing the bottom of a deep bottom container, the processing can be performed without any trouble. Since the air cylinder 2 is a double rod type, even when the elevating stroke of the elevating shaft 3 is lengthened, the elevating operation can be stabilized, and the guide rod 17 and the like can be easily attached.

The elevating shaft 3 has a two-part structure consisting of an upper rod 3a and a lower rod 3b. Therefore, not only is it easy to manufacture, but also by changing the outer diameter of the upper rod 3a. The pressure receiving area of the piston 6 changes, so that the pressure applied to the workpiece can be adjusted. For this reason, even when the pressure applied to the workpiece cannot be set to the optimum value only by adjusting the pressure of the high-pressure air, it is possible to cope without changing the cylinder diameter.

In the first embodiment, the case where the air cylinder 2 is of the double rod type has been described. However, the air cylinder 2 may be of the single rod type. For example, a return spring may be provided between the upper rod cover 8 and the mounting member 15. If interposed, a single-acting air cylinder can be used. However, if a single rod type air cylinder is used, the cooling of the ultrasonic vibrator 4 may be insufficient. In this case, the air is supplied into the cylinder tube 7 when the piston 6 rises. It is preferable that a part of the air is guided into the elevating shaft 3 and the ultrasonic vibrator 4 is cooled by the air.

In the above embodiment, the case where the air cylinder 2 is used has been described. However, a fluid pressure other than air may be used. Further, a drive source other than the fluid pressure may be used.

FIG. 3 shows an ultrasonic processing apparatus 101 according to a second embodiment of the present invention using a drive source other than the fluid pressure. The ultrasonic processing apparatus 101 has a cylindrical elevating shaft 103. And an electromagnetic coil 102 that lowers the lifting shaft 103 by electromagnetic attraction using the lifting shaft 103 as a plunger, and a return spring 104 that raises the lifting shaft 103.

The elevating shaft 103 is, as shown in FIG.
Inside the lower end, the ultrasonic vibrator 4 and the fixed horn 5 are incorporated as in the first embodiment.
The fixing flange 5a is moved up and down by the male screw member 19.
03 is fixedly held inside.

As shown in FIG. 3, the lifting shaft 103
Upper guide block 106 connected by tie rod 105
And the lower guide block 107, so that it can be moved up and down freely.
An electromagnetic coil 102 is provided. And the elevating shaft 1
Numeral 03 is configured to descend against an urging force of a return spring 104, which will be described later, by an electromagnetic attraction force generated by supplying power to the electromagnetic coil 102.

As shown in FIG. 3, a guide rod 17 is attached to the upper end of the elevating shaft 103 via an attachment member 15. The guide rod 17 is provided in a guide hole provided in the upper guide block 106. 18 to stop the rotation of the elevating shaft 103 around the axis. The return spring 104 is interposed between the mounting member 15 and the upper guide block 106, and returns the elevating shaft 103 lowered by the electromagnetic attraction force to the top dead center position.

In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

According to the present embodiment, the first
The same effect as that of the embodiment can be expected, and since the electromagnetic coil 102 is used, it can be used even in a place where there is no fluid pressure source.

[0042]

As described above, according to the present invention, the ultrasonic vibrator is incorporated in the lower end of the elevating shaft, and the elevating shaft is directly driven by the driving mechanism disposed on the outer periphery thereof. Therefore, it is possible to simplify the device configuration to achieve downsizing and cost reduction. In addition, since the devices can be arranged close to each other, even when processing a plurality of processing portions that are close to each other, the processing can be performed simultaneously in one step.

Further, by forming the elevating shaft in a cylindrical shape with the upper and lower ends closed, it becomes easy to incorporate the ultrasonic vibrator, and the weight can be reduced. Further, by providing the air inlets at the upper and lower ends of the elevating shaft, a sufficient chimney effect can be obtained, and the ultrasonic vibrator can be sufficiently cooled without providing a special forced cooling mechanism.

In the present invention, the drive mechanism is moved up
Both rods with pistons with the descending axis as the piston rod
By configuring in the form of a fluid pressure cylinder, you can raise and lower the elevator shaft with a large stroke, moreover elevator shaft
Even if the stroke of
And a rotation stopper for the vertical shaft
A structure or the like can be easily attached.

Further, the elevator shaft, by the upper rod via a piston and a lower rod and the separate structure, with manufacture is facilitated by the outer径調clause of the upper rod, the pressure receiving area of the piston is changed However, this makes it possible to easily obtain the optimum pressing force by adjusting the pressing force. Also, the number of replacement parts at that time can be minimized.

Further , the drive mechanism is constituted by an electromagnet for lowering the elevating shaft by electromagnetic attraction and a return spring, so that the present invention can be applied even when there is no fluid pressure source such as air.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating an ultrasonic processing apparatus according to a first embodiment of the present invention.

FIG. 2 is a left side view of FIG.

FIG. 3 is a partial cross-sectional view illustrating an ultrasonic processing apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 101 Ultrasonic processing apparatus 2 Cylinder 3, 103 Elevating shaft 3a Upper rod 3b Lower rod 4 Ultrasonic transducer 5 Fixed horn 6 Piston 13 Cap 14 Cooling air outlet 20 Cooling air inlet 102 Electromagnetic coil 104 Return spring

Claims (4)

(57) [Scope of request for utility model registration] And 1. A lower end inside the ultrasonic transducers elevator shaft built; the elevation axis is fixed in position on the fixed side to the outer peripheral portion of a drive mechanism for vertically driving the elevator shaft; wherein the Rise
The descending shaft is formed in a cylindrical shape with upper and lower ends closed, and the upper and lower ends
Air inlet and outlet for cooling the ultrasonic vibrator
Ultrasonic machining apparatus characterized by being 2. The ultrasonic machining apparatus according to claim 1, wherein the drive mechanism is constituted by a double rod type hydraulic cylinder provided with a piston using a lifting shaft as a piston rod. 3. The ultrasonic machining apparatus according to claim 2 , wherein the elevating shaft has a separate structure of an upper rod and a lower rod via a piston. 4. The ultrasonic machining apparatus according to claim 1, wherein the drive mechanism includes an electromagnet that lowers the vertical shaft by electromagnetic attraction using the vertical shaft as a plunger, and a return spring that raises the vertical shaft.