KR20220108666A - a system for ultrasonic welding with automatic self-aligning type - Google Patents

Abstract

The present invention relates to a self-aligning ultrasonic welding system. The self-aligning ultrasonic welding system has an assembly structure comprising: a vibrator; a main horn that plays the role of a booster; and a tool horn that transmits vibration energy to the object to be welded. The present invention is configured such that variable means are provided on left and right sides of the main horn, while having bilateral symmetry, and that a central angle of the main horn changes with respect to a fixing bracket, thereby enabling the relative motions of the main horn with respect to a molding roll.

Description

Automatic self-aligning ultrasonic welding system {a system for ultrasonic welding with automatic self-aligning type}

The present invention consists of an assembly structure of a main horn performing the role of a vibrator and a booster, and a tool horn that transmits vibration energy to a welding object, and variable means are provided symmetrically on both left and right sides of the main horn to fix the fixed bracket. It relates to an automatic aligning ultrasonic welding system that is installed so that the central angle of the main horn is changed so that the relative movement of the main horn is possible centering on a forming roll.

In general, an ultrasonic welding machine is a device capable of quickly and efficiently bonding plastics and plastics, films and films, synthetic fibers, etc. using vibration of ultrasonic waves.

In addition, the ultrasonic welding machine melts a vibrator that converts electrical energy generated from the oscillator into mechanical vibration, a main horn for amplifying the mechanical vibration generated from the vibrator, and mechanical vibration, that is, ultrasonic vibration, amplified by the main horn. It consists of a tool horn that generates frictional heat in contact with a part of synthetic resin or textile paper that is seated and fixed on the pedestal to be joined.

In addition, as a method of ultrasonic welding using such an ultrasonic welding machine, there are largely spot welding, welding, inserting, staking, and the like.

In general, when two substrates are joined using a high-capacity ultrasonic welding machine, the protrusion formed on one substrate is melted by high frictional heat caused by strong ultrasonic vibration, and the fluidity of the molten protrusion is excellent, so the bondability between the substrates is also excellent. great.

In relation to this technology, the conventional patent No. 1361059 discloses a technology of an ultrasonic bonding device having an elastic member for aligning the pressing surface, and the configuration is as shown in FIG. As the fixing member 50 having the insertion part formed thereon is coupled to the upper portion of the ultrasonic horn 40, the ultrasonic horn 40 is fixed to the pressing member provided with the pressing surface 20a, and the jig base 10 is It is provided to be movable in the downward direction, and is installed to press the circuit chip (C) on the printed circuit board (P) positioned on the stage 100 while moving in the upward and downward directions.

In addition, the pressing member is formed with an ultrasonic fixing part 23 protruding from the upper surface of the pressing part 21 and the elastic member fixing part 22 and the pressing member 20, and the elastic member fixing part 22 is pressing It is formed to protrude along the periphery of the part 21 and the lower end of the shaft 31 of the elastic member is inserted and supported, and the elastic member includes the shaft support part 34 , the shaft 31 , the spring 32 and the bush 33 . It is supported on the upper surface of the jig base 10 including.

However, the ultrasonic bonding apparatus as described above is a configuration in which the pressing member is supported by the spring 32 on the jig base 10, and a constant pressure is applied to the pressing part 21 in a configuration that adjusts the distance between the pressure parts only by elasticity. There is a disadvantage in that it repeatedly acts to decrease durability or cause damage to the pressing part 21 .

It is an object of the present invention to improve the conventional problems as described above, to easily secure a space according to a change in the thickness of the nonwoven fabric for fusion, prevent overload of the forming roll and prevent damage to the tool horn, The purpose of this invention is to provide an automatic aligning ultrasonic welding system that prevents an increase in operator fatigue by easily controlling phosphorus, enables easy setup work regardless of skill level, and prevents overload and damage of the vibrator.

In order to achieve the above object, the present invention consists of an assembly structure of a main horn performing the role of a vibrator and a booster, and a tool horn that transmits vibration energy to a welding object, and variable means are provided on both sides of the main horn so as to be symmetrical. It provides an automatic aligning ultrasonic welding system that is installed so that the central angle of the main horn changes around the fixed bracket.

And, the variable means of the present invention includes a mounting hole installed symmetrically on both sides about the central axis of the main horn, a cylinder inserted into the mounting hole, and an inlet and outlet valve for operating the cylinder. to provide.

In addition, the variable means of the present invention provides a self-aligning ultrasonic welding system in which a variable bolt is further provided on one side of the fixing bracket, and the variable bolt is installed to support a mounting hole provided in the cylinder through a spring. .

In addition, the variable means of the present invention is arranged in four directions about the central axis of the main horn and provides an automatic aligning ultrasonic welding system installed to move forward, backward and left and right directions.

Subsequently, the variable means of the present invention is provided with a controller connected to the sensing means consisting of a distance sensor and a pressure sensor, and the controller measures the distance and pressure while the object is introduced during the setup operation The amount of pressure oil supplied to the cylinder It provides an automatic aligning ultrasonic welding system to control the

As described above, according to the present invention, it is easy to secure space according to the change in the thickness of the nonwoven fabric for fusion, and it prevents the tool horn from being damaged while preventing the overload of the forming roll, and while preventing the increase in worker fatigue by easily adjusting the alignment. The setup work is easily done regardless of the skill level, and it has the effect of preventing overload and damage of the vibrator.

1 is a side view showing a conventional ultrasonic welding machine.
Figure 2 is an external view showing the self-aligning type welding machine according to the present invention.
Figure 3 is a state diagram of the application of the self-aligning type welding machine according to the present invention.
4 is an operation state diagram along the central axis of the fusing machine according to the present invention.
5 is an installation state diagram of a splicer according to an embodiment of the present invention.
6 to 8 are respectively applied state diagrams of the welding machine according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail based on the accompanying drawings.

2 to 8, the fusing machine 100 of the present invention is a vibrator 110 that converts electrical energy into vibration by the piezoelectric effect, a main horn 130 that serves as a booster, and vibration energy. It consists of an assembly structure of the tool horn 150 that is transmitted to the welding object 700 .

At this time, the vibrator 110 is installed to convert the power of 110 ~ 120V, 50/60Hz into electrical energy of 15 ~ 50kHz through the ultrasonic oscillator.

In addition, the main horn 130 is integrally connected to one side of the vibration vehicle 110 and is installed to increase or decrease the initial vibration energy generated from the vibrator.

In addition, the tool horn 150 is manufactured to correspond to the shape of the object to be welded 700 and is installed to transmit vibration energy from the vibrator to the object to be welded in an optimal state.

In addition, the welding object 700 is installed so that the fusion point is inserted between the forming roll 300 and the tool horn to be integrally protruded.

In addition, variable means 200 are provided on both left and right sides of the main horn 130 so as to change the central angle of the main horn 130 around the fixed bracket 290 .

And, the variable means 200 is provided in the fixed block 210 connected to the main horn 130 and the fixed block 210 so as to be symmetrical on both sides about the central axis 131 of the main horn 130 . It consists of a mounting hole 230 to be used, a cylinder 250 inserted into the mounting hole, and a valve unit 270 for operating the cylinder.

At this time, the valve unit 270 includes an inlet valve 271 to which air is supplied and an outlet valve 273 to which air is discharged.

In addition, the variable means 200, a variable bolt 280 is further provided on one side of the fixing bracket 290 to be screwed, and the variable bolt 280 is a mounting hole 251 provided in the cylinder 250. ) may be installed to support the spring 253 through it.

In addition, the variable means 200 are disposed in four directions around the central axis of the main horn and are installed to move forward, backward, and left and right directions.

Subsequently, the variable means 200 is provided with a controller 220 connected to the sensing means 240 consisting of a distance sensor and a pressure sensor.

At this time, the controller 220 measures the distance between the forming roll 300 and the tool horn and the pressure acting on the tool horn when an object is introduced during the setup operation, and the value measured by the sensing means is stored in advance. It is installed to control the amount of pressure oil supplied to the cylinder by a program.

On the other hand, the forming roll 300 is further provided with a variable means (200).

At this time, the variable means 200 is made of a combination of a main bolt 201 having a large pitch and an auxiliary bolt 203 having a small pitch while being screwed to the inner diameter side of the main bolt, and the forming roll is It is supported by the vertical bracket 208 through the rotation block 209 while being installed so that the rotational force is transmitted.

The operation of the present invention configured as described above will be described.

As shown in Figs. 2 to 8, the welding machine 100 to which the ultrasonic wave of the present invention is applied converts the main horn 130 into a high-frequency electric signal of a predetermined region by supplying power to the main horn 130.

In addition, the ultrasonic vibrator 110 vibrating the main horn 130 uses an ultrasonic wave having a frequency of 16 kHz or higher as an acoustic wave having a frequency exceeding the audible frequency range.

At this time, the ultrasonic vibrator induces fine particle motion by using ultrasonic waves having a high frequency and remarkably greater intensity than normal sound waves to cause mechanical action and heat generation, and ultrasonic waves in the frequency range of 10KHz to 10MHz cause insulation breakdown of the fusion material. No short sparks.

Subsequently, the vibration of the vibrator 110 having the above characteristics is transmitted to the tool horn 150 after adjusting the amplitude through the main horn 130 , and friction heat by ultrasonic waves is generated in the tool horn 150 . to weld and cut the welding object 700 .

In addition, when the welding object 700 is inserted between the forming roll 300 and the tool horn, the forming roll 300 is rotated by power supply so that the welding object is moved, and the forming roll 300 is fusion-bonded. The point 301 is integrally protruded and fused or a cutting operation is performed.

In addition, variable means 200 are provided on both sides of the main horn 130 so as to be symmetrical on the left and right sides, so that the central angle of the main horn 130 is changed around the fixing bracket 290 so that the left and right deviations are large, but the welding object 700 ) to prevent scratching or damage of the forming roll 300 through the cushion of the variable means even if it is set incorrectly.

In addition, damage to the main horn 130 due to the collision between the main horn 130 and the forming roll 300 as well as overload of the vibrator 110 is prevented.

In addition, the variable means 200 includes a mounting hole 230 and a mounting hole 230 provided in the fixing block 210 so as to be symmetrical on both sides about the central axis 131 of the fixing block 210 and the main horn 130 . It consists of a cylinder 250 inserted into the mounting hole and a valve unit 270 for operating the cylinder, and the central axis of the main horn through a fixed block connected to the cylinder while the cylinder moves when the pneumatic pressure is transmitted to the cylinder 250 through the valve unit. make it variable

In addition, the variable means 200 is configured as a variable bolt 280 provided on one side of the fixing bracket 290 so that the mounting position of the cylinder 250 is first adjusted and then changed when air is supplied.

At this time, the variable bolt 280 is supported through the spring 253 in the mounting hole 251 provided in the cylinder 250 to perform the role of a cushion.

In addition, the variable means 200 are arranged in four directions around the central axis of the main horn to move forward, backward and left and right directions, thereby enabling smooth operation angle adjustment of the main horn 130 .

Subsequently, the variable means 200 is provided with a controller 220 connected to the sensing means 240 consisting of a distance sensor and a pressure sensor, so that the object is introduced during the setup operation to measure the distance and pressure and supplied to the cylinder It becomes possible to control by automation to control the amount of pressure oil.

On the other hand, the forming roll 300 is also provided with a variable means 200, so that rapid and accurate adjustment is possible by the relative adjustment of the forming roll and the main horn.

At this time, the variable means 200 is composed of a combination of a main bolt 201 having a large pitch and an auxiliary bolt 203 having a small pitch while being screwed to the inner diameter side of the main bolt. will be performed simultaneously.

100...Smelter 110...Oscillator
130...main soul 150...tool soul
208...Vertical Bracket 210...Fixed Block
220...Controller 230...Mounting hole
240...sensing unit 250...cylinder
253...spring

Claims (5)

It consists of an assembly structure in which the main horn, which plays the role of the vibrator and the booster, and the tool horn, which transmits vibration energy to the welding object, are sequentially connected on the same central axis,
An automatic aligning ultrasonic welding system in which variable means are provided symmetrically on both sides of the main horn so that the central angle of the main horn with respect to the forming roll supported by the vertical bracket around the fixed bracket is changed. According to claim 1, wherein the variable means, a fixed bracket to be fixed, a fixed block that is installed symmetrically on both sides about the central axis of the main horn while being supported by the fixed bracket, a mounting hole provided in the fixed block, and the mounting hole The self-aligning ultrasonic welding system, characterized in that it consists of a cylinder to be inserted and an inlet and outlet valve for operating the cylinder, so that a symmetrical cylinder is operated when air is supplied and the fixing block is installed to move around the fixing bracket. According to claim 2, wherein the variable means, a variable bolt is further provided on one side of the fixing bracket,
The variable bolt is installed to support the mounting hole provided in the cylinder with a spring interposed therebetween to adjust the position of the cylinder. According to claim 1, wherein the variable means is provided with a controller connected to a sensing unit consisting of a distance sensor and a pressure sensor,
The controller measures the distance between the forming roll and the tool horn and the pressure acting on the tool horn when an object is introduced during setup work, and then adjusts the amount of pressure oil supplied to the cylinder. system. The method according to claim 1, wherein the variable means is made of a combination of a main bolt having a large pitch and an auxiliary bolt having a small pitch while being screwed to the inner diameter side of the main bolt,
The forming roll is installed so as to transmit a rotational force from the outside and is supported on a vertical bracket through a rotating block so that the mounting position of the forming roll is changed when the variable means is adjusted.

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