KR100809980B1 - Ultrasonic fusion apparatus - Google Patents

Abstract

An ultrasonic fusion apparatus is provided to facilitate the contact of a tool horn and a pattern roller with cubic portions of safety clothes, such as seam portions, sleeve ends, and trouser ends, thereby completely keeping the airtightness of the cubic portions of the safety clothes. A cloth support unit(20) has a pattern roller(15) for supporting cloth within a support lever(10), which is protruded to one side of a middle part of a frame(5). An ultrasonic generator(20) has a tool horn(42) disposed above the pattern roller, wherein the tool horn transmits ultrasonic waves to the cloth to fuse and bind the cloth. A height-controlling unit(40) has a driving cylinder(52) for moving the ultrasonic generator upwardly and downwardly. A step board(80) has switches for transmitting a driving force to the pattern roller of the cloth support unit and operating the tool horn of the ultrasonic generator and the driving cylinder of the height-controlling unit.

Description

Ultrasonic Fusion Apparatus {Ultrasonic Fusion Apparatus}

1 is an external perspective view of the ultrasonic welding device according to the present invention as a whole;

Figure 2 is a cross-sectional view showing the entire internal structure of the ultrasonic welding device according to the present invention;

Figure 3 is a perspective view showing a state of sewing three-dimensional parts such as seams, sleeves, pants beak of the fabric by the ultrasonic welding device according to the present invention;

Figure 4 is a photograph showing in detail the tool horn and the pattern roller portion provided in the ultrasonic welding device according to the present invention;

5 is a perspective view showing a drive cylinder provided in the ultrasonic welding device according to the present invention;

Figure 6 is a photograph showing the portion of the three-dimensional portion, such as seam portion, sleeve beak, pants beak of the fabric made by the ultrasonic welding device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1 ..... Ultrasonic welding device according to the present invention

5 .... Frame 7 .... Casing

7a .... flange 10 ..

15 .... pattern roller 15a ... pattern cotton

20 .... Fabric support 22 .... Drive motor

22a .... shaft 40 .... ultrasonic generator

42 .... tool horn 42a ... flat

44 .... booster 46 .... vibrator

48 .... case 48a .... flange

50 .... Height adjustment 52 .... Drive cylinder

52a .... Rod 54 .... Pneumatic Regulator

56 .... Solenoid Valve 60a, 60b ... Guide Rod

70 .... Pressure adjustment part 72 .... stopper

80 .... Footrest 90 .. Drive controller

92 .... Operation switch 94 .... Electric switch

100 ... Ultrasonic Oscillator B .... Bearing

c .... chemical fiber

The present invention relates to a device for bonding chemical fiber fabrics using ultrasonic fusion, and more specifically, by heating and melting the chemical fiber fabric above the melting point using ultrasonic energy, and then applying pressure to maintain the airtightness, The present invention relates to an ultrasonic welding device that can be effectively used to sew three-dimensional parts such as seams of a garment, sleeves, and pants.

In general, the ultrasonic welding machine is a method of welding a workpiece using vibration of sound waves to generate electrical energy of 20-40 kHz (1sec) through a generator using a 50 / 60Hz power source, After converting the mechanical vibration energy through the booster, and then transmitted to the workpiece through the tool horn to generate a frictional heat due to the instantaneous strong vibration to melt the bonding surface of the workpiece.

Such ultrasonic welding causes a small vertical vibration in the ultrasonic welding portion to reach the welding line through the component at the apex and dissolve the interface there. The component must be absolutely free in this vertical motion and the time is generally between 0.1 and 1 second. Energy directors are usually used in areas requiring relatively low strength welding with amorphous materials, and shear joints with larger welding depth than energy director welding are used for hermetic sealing.

Partially crystalline resin is more difficult to fusion than amorphous resin, and when the melt viscosity is high, the molten material flows out of the fusion region. Therefore, shear joints should be used in fusion designs to prevent this. Heat is generated very locally and the affected area is only a few tenths of a millimeter, so the shrinkage stress is higher than in other fusion processes. Examples of applications where ultrasonic fusion is applied to applications other than protective clothing are micro switches, steam iron buckets, fuse holders, pump housings and connectors.

On the other hand, "safety protective clothing" means protective clothing that is worn to protect workers from the hazardous environment caused by the work or the workplace itself in the place where the work is carried out, and the dust, liquid and gaseous state It acts as a barrier to the direct contact with the body's fine chemical toxins, while also dissipating the sweat and heat generated by the body's movements out of the protective clothing as you work. It will always play a role in increasing the efficiency of the work.

In other words, safety protective clothing protects workers from harmful environments and improves work comfort and improves work efficiency. Therefore, in order to prevent safety accidents and to raise safety awareness of unions and owners who want to protect workers, The demand is expected to expand further in the future.

By the way, in the case of producing safety protective clothing by the general sewing method, the safety protective clothing is used to combine the fabrics using the service, wherein each combination is completely made by the tooth, the pressure of the presser foot, the service tension and the type of the fabric. If not, a puckering phenomenon occurs, in which unwanted small wrinkles occur around the seam of the seam.

Also, in the case of safety protective clothing, dust or chemicals can easily penetrate into three-dimensional parts such as seams, sleeves, and pants's beaks. Given. Particularly, the part where perkering occurred is very difficult to seal, and it is easy to be defective. Therefore, the finished product is treated poorly due to minor mistake, which accounts for more than 70% of the labor cost and most of the cost of lost processing. .

Therefore, there is an urgent need for a new ultrasonic welding device that can be perfectly bonded while maintaining airtightness to three-dimensional parts such as seams, sleeves, and pants's beaks of safety protective clothing to improve productivity.

The present invention is to solve the conventional problems as described above, the purpose is to sew the puckering (seam puckering) in the three-dimensional portion, such as seams, sleeves, pants beak, if you want to sew a chemical fiber fabric It is to solve the problem that the sewing process is poor, and to provide an ultrasonic welding device that can achieve a good quality sewing work by maintaining the airtight at the 씸 part completely.

In addition, the present invention can be achieved in another three-dimensional parts, such as seams, sleeves, pants beaks of garments made of chemical fiber fabrics to easily sew while maintaining the airtight, greatly improving productivity while reducing the share of labor costs It is to provide an ultrasonic welding device that can be made.

In order to achieve the above object, the present invention, in the apparatus for sewing and bonding the chemical fiber fabric using ultrasonic fusion,

A frame constituting the support structure;

A fabric support part having a support lever protruding in a left and right direction orthogonal to a fabric advance direction at one side of the frame, and having a pattern roller supporting a sewing fabric inside the support lever;

An ultrasonic generator having a tool horn disposed on an upper side of the pattern roller to transmit ultrasonic waves to the sewing fabric and to melt-bond the overlapped portions of the fabric;

A height adjusting part including a driving cylinder for raising and lowering the ultrasonic wave generator up and down to raise and lower the tool horn relative to the pattern roller; And

And a footrest unit for transmitting driving force to the pattern roller of the fabric support part, operating the tool horn of the ultrasonic wave generating part, and operating the drive cylinder of the height adjusting part. It provides an ultrasonic welding device characterized in that the bonding sewing.

And the present invention preferably provides an ultrasonic welding device, characterized in that the three-dimensional portion of the fabric is a seam portion, sleeve beak, pants beak of the garment.

In addition, the present invention preferably provides the ultrasonic welding device, characterized in that the distal support is provided with a drive motor for rotating the pattern roller, the shaft of the drive motor is extended to the inside of the support lever is connected to the pattern roller. do.

And the present invention is preferably the support lever is made of a hollow hollow elliptical cross-section tube structure, protruding horizontally from one side of the frame to be arranged horizontally so that one side forms an open space three-dimensional part of the garment Provided is an ultrasonic welding device, characterized in that configured to support easily.

In another aspect, the present invention preferably provides an ultrasonic welding device, characterized in that the tool horn of the ultrasonic generator is made of a tapered structure gradually tapering toward its end.

And the present invention preferably provides an ultrasonic welding device, characterized in that the drive cylinder of the height adjustment unit is made of a pneumatic cylinder.

In addition, the present invention preferably the height adjustment unit further comprises a pressing force adjusting portion for adjusting the lowering position of the tool horn by controlling the lowering of the rod on the top of the drive cylinder, the pressing force adjusting portion screwed to the top of the rod stopper ( It provides an ultrasonic welding device characterized in that it further comprises a stopper.

And the present invention preferably provides the ultrasonic welding device, characterized in that the height adjustment portion is a case containing the tool horn is connected to the casing of the upper side of the frame through a plurality of guide rods to move up and down.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Ultrasonic welding device 1 according to the present invention, as shown in Figures 1 and 2 as a whole, sewing the chemical fiber fabric (c) using ultrasonic welding, the seam portion of the garment, sleeves, pants beak and Like this, it is a device that achieves good quality sewing work while keeping airtightness perfectly in the three-dimensional part.

The main material of the fabric (c) used in the ultrasonic welding device 1 according to the present invention is, for example, a chemical fiber fabric (c) for producing safety protective clothing, and of a multi-layer composed of different materials. Material is also possible. In this case, however, the fusion portions of both fabrics (c) of the portion to be bonded should be composed of chemical fibers, so there should be no problem in fusion.

Generally, the material of the fabric (c) may be polyolefin, polyester, nylon, PVC, etc., and the thickness is designed to use both a woven fabric and a woven fabric, so that it can be used up to 0.5 to 20 mm, but the present invention is not limited thereto. Do not.

The fabric (c) is usually supplied with two pieces, the two pieces of fabric (c) are connected to each other to sew.

The ultrasonic welding device 1 according to the present invention includes a frame 5 constituting a support structure, and includes a support lever 10 protruding toward one side of the frame 5, and the support lever 10 of the support lever 10. The fabric support part 20 provided with the pattern roller 15 which supports the several sewing fabric c inside.

The support lever 10 is formed of a hollow hollow elliptic cross-sectional tube structure and protrudes from one side of the frame 5 to be horizontally disposed.

That is, the support lever 10 is formed in the left and right directions perpendicular to the advancing direction of the fabric (c) by the pattern roller 15. Thus, the structure of the support lever 10 of the elliptical cross section protruding to one side is shown in FIG. As shown, one side may form an open space to comfortably support a three-dimensional portion such as a seam portion of a garment, a sleeve beak, a pants beak, and easily join.

And the distal end 20 is provided with a drive motor 22 for rotating the pattern roller 15, as shown in detail in Figure 2, the shaft 22a of the drive motor 22 is It extends inwardly of the support lever 10 and is connected to the pattern roller 15.

The drive motor 22 is mounted on the inner side of the frame 5, the shaft 22a of the drive motor 22 is supported on the inner side of the support lever 10 through bearings B, and at the end of the pattern The roller 15 is connected. Therefore, the operation of the drive motor 22 is to achieve the rotation of the pattern roller 15.

On the other hand, the pattern roller 15 of the fabric support portion 20 has a pattern surface 15a having an enlarged diameter on its outer circumferential surface, and the pattern surface 15a is a tool of the ultrasonic generator 40 described later. It is a part for melting and adhesive molding the overlapped portion of the fabric (c) together with the horn 42. The pattern surface 15a may be variously formed to design the fabric c in various types of patterns.

The pattern surface 15a is formed such that the upper and lower portions of the bonded portion of the fabric c are completely bonded to each other without being punctured. In the case of safety protective clothing, it provides a continuous welded portion that completely seals the chemicals from penetration into three-dimensional parts such as the seam portion of the garment, in particular, the seam of the garment, the sleeve beak, and the pants beak. The fusion is completed by the pattern surface (15a) serves to block the toxic substances that can penetrate into the liquid or gas state while maintaining a sufficient tensile strength.

Therefore, the pattern surface (15a) can be imprinted with a pattern in a variety of designs according to the application, such a pattern surface to increase the tensile strength because it is bonded by pressing the molten chemical fiber fabric (c) portion, By forming airtightness of the welded part, it blocks the toxic substances that can penetrate into the liquid or gaseous state.

And the present invention is disposed opposite to the pattern roller 15 to transmit the ultrasonic wave to the sewing fabric (c), the ultrasonic generator 40 having a tool horn (42) for fusion bonding the overlapping portion of the fabric (c) Has The tool horn 42 of the ultrasonic generator 40 has a booster 44 and a vibrator 46 connected to an upper side thereof, and a booster 44 and a tool horn (below) at the lower end of the vibrator 46. 42 are connected in turn.

The tool horns 42, the boosters 44 and the vibrators 46 are sequentially embedded in the rectangular box-shaped case 48, and as described later, are electrically connected to the ultrasonic oscillator 100 to generate ultrasonic waves. Power on.

And the present invention is the tool horn 42 of the ultrasonic generator 40 is formed in a tapered structure gradually tapering toward the end, as shown in Figure 2 and 4, the end is a chemical fiber fabric (c When pressing), the flat surface 42a of a predetermined width is formed so as not to cause damage.

This tapered structure of the tool horn 42 is particularly useful for joining three-dimensional parts such as seams, sleeves, and pants beaks of the garment. This is because the tapered structure of the tip of the tool horn 42 is easily accessible to three-dimensional parts such as seams, sleeves, and pants, of clothes, and can be easily joined (see FIG. 3).

In addition, the present invention includes a driving cylinder 52 for raising and lowering the ultrasonic generator 40 up and down, and has a height adjusting unit 50 for adjusting the pressing force of the pattern roller 15.

As shown in FIG. 5, the height adjusting part 50 is mounted with a driving cylinder 52 at an upper end of a casing 7 fixed on the frame 5, and of the driving cylinder 52. The rod 52a extends downward and is connected to the case 48 in which the ultrasonic generator 40 is built.

In addition, the driving cylinder 52 of the height adjusting part 50 is formed of a pneumatic cylinder, and an external pneumatic source (not shown) through the pneumatic regulator 54 and the solenoid valve 56 positioned below the frame 5. , For example, an air compressor. Accordingly, the drive cylinder 52 is configured to raise and lower the rod 52a through pneumatic control by the solenoid valve 56.

In addition, the height adjuster 50 has a structure in which the case 48 having the tool horn 42 embedded therein is connected to one side of the casing 7 through a plurality of guide rods 60a and 60b to move up and down. . The plurality of guide rods 60a and 60b penetrate up and down portions of the plurality of flanges 7a of the casing 7 to maintain a constant distance, and thus the guide rods 60a and 60b may be provided to the guide rods 60a and 60b. The flanges 48a of the case 48 are connected so that the tool horn 42 can vertically move by the operation of the drive cylinder 52 in a vertical direction.

In addition, the height adjusting unit 50 further includes a pressing force adjusting unit 70 for controlling the lowering position of the tool horn 42 by controlling the lowering of the rod 52a on the upper end of the driving cylinder 52. The pressing force adjusting unit 70 includes a stopper 72 screwed to an upper end of the rod 52a of the driving cylinder 52, and screwing the stopper 72 to the rod 52a. By adjusting the position, it is possible to adjust the displacement in which the driving cylinder 52 can push the rod 52a downward, and as a result, the tool horn 42 connected to the rod 52a is connected with the pattern roller 15. To adjust the force to press the fabric (c).

Ultrasonic welding device 1 according to the present invention because the degree of fusion depends on the thickness of the fabric (c) in order to achieve the optimal fusion should be adjusted so that the pressing pressure according to the thickness of the fabric (c) is different. do. To this end it is provided with a pressing force adjustment unit 70.

On the other hand, when the height adjustment unit 50 is provided with pressure from a pneumatic source, it is provided with a pressure of 3 ~ 4.5 bar for paper cloth, 5 ~ 6.5 bar for Fuji fabric. The thickness of the fabric (c) to be used is generally 0.5 to 20 mm, and the height at which ultrasonic fusion can occur most is the fusion rate, the type of material of the fabric (c), and the amount of energy oscillated by the ultrasonic vibrator 46. Generally, 0.5 to 10 mm is preferable, but the present invention is not limited thereto.

Accordingly, the tool horn 42 is lifted and lowered by the driving cylinder 52, and the pressing force is adjusted by the pressing force adjusting unit 70 to compress the fabric c at a constant pressure against the pattern roller 15. .

In addition, the present invention transmits a driving force to the pattern roller 15 of the fabric support 20, the tool horn 42 of the ultrasonic generator 40 is operated, the drive cylinder of the height adjustment unit 50 And a footrest portion 80 incorporating switches for operating 52.

The scaffold 80 is composed of a conventional foot switch, which is electrically connected to the drive controller 90, and when the user steps on the scaffold 80, the built-in switches (not shown) operate to dispose of the foot. The drive motor 22 of the supporting unit 20 is operated to rotate the pattern roller 15, and supply power to the ultrasonic generator 40 to allow the ultrasonic wave to be oscillated through the tool horn 42.

In addition, by transmitting the pneumatic pressure to the drive cylinder 52 of the height adjustment unit 50 to lower the tool horn 42 to achieve the sewing operation of the chemical fiber fabric (c).

On the other hand, the front of the casing (7) located on the upper side of the frame (5) is operated in the operation of the present invention, such as the operation switch 92 for operating the pneumatic source, the electric switch 94 for controlling the on / off of the main power There is arranged a drive controller 90 equipped with various switches for controlling the associated energy from being supplied from the outside. In addition, an ultrasonic oscillator 100 for providing ultrasonic waves to the vibrator of the ultrasonic generator 40 is disposed at one lower side of the frame 5.

In the ultrasonic welding device 1 according to the present invention configured as described above, a three-dimensional portion such as a seam portion, a sleeve beak, and a pants beak of a garment made of a fabric (c) is overlapped in plural, so that the pattern roller 15 and the tool horn ( 42) is entered.

In this case, one side of the support lever 10 is mounted so that the pattern roller 15 is rotatable to form an open space to comfortably put on the three-dimensional portion of the garment, the user to step on the footrest 80 When the built-in foot switches (not shown) operate to operate the drive motor 22 of the fabric support 20 to rotate the pattern roller 15, and supply power to the ultrasonic generator 40 to supply a tool horn. Ultrasonic wave is oscillated through 42.

In addition, by transmitting the pneumatic pressure to the drive cylinder 52 of the height adjustment unit 50 to lower the tool horn 42 is in close contact with the pattern roller 15 side to achieve the sewing operation of the chemical fiber fabric (c).

In this state, when the user continuously presses the scaffolding part 80, the pattern roller 15 of the fabric support part 20 is continuously rotated, and the ultrasonic generator 40 has an AC 220 V (50 to 60 Hz). The power is converted into electric energy of 15-50 KHz and transmitted to the vibrator 46. The electrical energy supplied transducer 46 converts it into mechanical vibration energy and transmits it to the booster 44 and the tool-horn 42. At this time, while the amplitude expansion is adjusted and pressurized, the ultrasonic energy generates a frictional heat instantaneously to the thermoplastic material, and a strong molecular bond is made between the pattern rollers 15.

As such, the vibration frequency (vibration energy) generated by the tool horn 42 is moved to the pattern roller 15 under the tool horn 42, and the tool horn 42 and the pattern roller 15 are made of respective materials. And because the movement range of the vibration frequency is different depending on the mechanical characteristics, high heat is generated at the contact surface of the tool horn 42 and the pattern roller 15 by the vibration frictional heat resulting from the difference of the movement range of the vibration frequency. At this time, the fabric c located between the tool horn 42 and the pattern roller 15 is melt-bonded by vibration frictional heat.

Here, the tool horn 42 has a tapered structure, so that the lower end of the tool horn 42 is easily in contact with three-dimensional parts such as seams, sleeves, and pants, of the garment, so that the user can easily fabricate the fabric.

Through this process, as shown in FIG. 6, the plurality of sewing fabrics c are interposed between the pattern roller 15 of the fabric support 20 and the tool horn 42 of the ultrasonic generator 40. Through the fusion process is to be bonded in a continuous sewing state while advancing in the rotation operation of the pattern roller 15.

Figure 6 shows a seam partial appearance of a garment made of a chemical fiber fabric (c) sewn in accordance with the present invention. As described above, according to the present invention, it is possible to achieve a good quality sewing operation in which airtightness is perfectly maintained in the seam portion S of the garment seam portion without generating seam puckering through ultrasonic welding.

After the sewing operation is completed, when the user releases the state of pressing the scaffolding part 80, the driving motor 22 of the fabric support part 20 is stopped to stop the rotation of the pattern roller 15, and the ultrasonic wave is stopped. The operation of the generator 40 is stopped, and the tool horn 42 is raised by transferring pneumatic pressure to the drive cylinder 52 of the height adjusting part 50, separated from the pattern roller 15 side, and then the fabric ( c) is drawn out therefrom to complete the sewing work.

Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited to such a specific structure. Those skilled in the art may variously modify or change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. For example, the specifications of major components such as drive motors and drive cylinders can all be set differently in consideration of the processing capacity of the entire apparatus. In addition, the various parts can be replaced by other parts having equivalent functions. Nevertheless, such simple design modifications or variations will be made clear in advance that all obviously fall within the scope of the present invention.

According to the present invention as described above, in order to sew a chemical fiber fabric used in safety protective clothing, etc., the tool horn forms a tapered structure toward the lower end thereof, and the pattern roller facing the tool horn has an elliptical cross-sectional support lever. Rotating on the top makes it easy for the tool horn and the pattern roller to come in contact with three-dimensional parts such as the seam of the garment, the sleeve beak, and the pants beak so that the user can easily achieve a good quality sewing operation in which the airtightness is perfectly maintained.

In addition, according to the present invention, the sewing work can be easily performed while maintaining airtightness in three-dimensional parts such as seams, sleeves, and beaks of the garments, which can greatly improve the productivity of sewing work while reducing the weight of labor costs. The effect is obtained.

Claims (8)

In the apparatus for sewing and bonding the chemical fiber fabric using ultrasonic welding, A frame constituting the support structure; A fabric support part having a support lever protruding in a left and right direction orthogonal to a fabric advance direction at one side of the frame, and having a pattern roller supporting a sewing fabric inside the support lever; An ultrasonic generator having a tool horn disposed on an upper side of the pattern roller to transmit ultrasonic waves to the sewing fabric and to melt-bond the overlapped portions of the fabric; A height adjusting part including a driving cylinder for raising and lowering the ultrasonic wave generator up and down to raise and lower the tool horn relative to the pattern roller; And And a footrest unit configured to transmit driving force to the pattern roller of the fabric support part, to operate the tool horn of the ultrasonic wave generation part, and to include switches for operating the driving cylinder of the height adjustment part. The distal end portion is provided with a drive motor for rotating the pattern roller, the axis of the drive motor is ultrasonic welding device, characterized in that extending to the inside of the support lever is connected to the pattern roller. delete delete The method of claim 1, wherein the support lever is formed of a hollow hollow elliptical cross-section tube structure, protruding horizontally from one side of the frame is arranged horizontally so that one side forms an open space to form a three-dimensional portion of the garment Ultrasonic welding device, characterized in that configured to support comfortably. The ultrasonic welding device according to claim 1, wherein the tool horn of the ultrasonic wave generating unit has a tapered structure gradually tapering toward its end. The ultrasonic welding device according to claim 1, wherein the driving cylinder of the height adjustment part is made of a pneumatic cylinder. The stopper of claim 6, wherein the height adjusting part further includes a pressing force adjusting part for controlling the lowering position of the tool horn by controlling the lowering of the rod on the upper end of the driving cylinder, and the pressing force adjusting part is a stopper screwed to the upper end of the rod. Ultrasonic welding device characterized in that it further comprises a). The ultrasonic welding device according to claim 6, wherein the height adjusting part includes a case having the tool horn connected to a casing on the upper side of the frame through a plurality of guide rods to move up and down.

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