JPH05169542A - Ultrasound fusion stitching device - Google Patents

Abstract

PURPOSE:To stitch a product using an ultrasound fusion process, then thereby preparing a stitched product with a fused part which does not reflect light and improve the quality of the product by forming fine uneven parts on the surface of a projecting part in a short cylindrical member. CONSTITUTION:If sheet-like members to be junctioned 19, 20, 22 are stitched by pressure contact of an ultrasound oscillator 11 and a rotating oscillator receptacle 12 and consequently, a stitched product 21 is prepared, and it is cut using a cutter 17. In addition, the ultrasound oscillator 11 is allowed to come in contact continuously with projecting parts 25 provided continuously on the peripheral edge of a disc member 13. Fine uneven parts 32 are formed on the surface of the projecting part 25 formed on the peripheral edge of the disc member. Therefore, fine uneven parts are formed on a top skin material 20 and a bottom skin material 22 when these materials are fused together by pressure contact between the ultrasound oscillator 11 and the short cylindrical member 13. Thus the surface of each fused part becomes crape-like pattern so that no light is allowed to reflect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic welding suturing apparatus, and more particularly to an ultrasonic welding suturing apparatus capable of suturing a plurality of sheet-shaped members to be joined having heat melting property by ultrasonic welding.

[0002]

2. Description of the Related Art Conventionally, when a plurality of sheet-shaped materials to be joined are stacked to form a so-called composite sheet material,
A sewing machine is used for suturing a plurality of sheet-shaped materials to be joined. By the way, conventionally, joining of members having heat melting property by ultrasonic welding has been performed. That is, such joining by ultrasonic welding converts ultrasonic electric energy into mechanical vibration energy and supplies the mechanical vibration energy to the bonding surfaces while pressing the bonding surfaces of the plurality of heat-meltable members. Then, strong frictional heat is generated to melt the materials to be welded and weld these plural materials to be welded.

Such a conventional ultrasonic welding and suturing device is provided with an ultrasonic transducer capable of generating mechanical vibration energy obtained by converting ultrasonic electric energy, and disposed below the ultrasonic transducer. A rotary vibrator receiving portion on which a material to be bonded having thermal melting property can be placed is provided between the ultrasonic vibrator and the ultrasonic vibrator. Further, the rotary vibrator receiving portion is a rotary shaft arranged orthogonally to the length direction of the material to be joined, and is fixed along the rotation axis to rotate together with the movement of the material to be joined. It is composed of a plurality of disc members, each of which has a convex portion that is in pressure contact with the vibrator and is continuously provided on the periphery.

[0004]

By the way, in such a conventional ultrasonic welding and suturing device, the ultrasonic transducer is formed on the peripheral edge of the rotary oscillator by pressure contact between the ultrasonic oscillator and the rotary oscillator receiving portion. A welded portion having the same shape as the surface shape of the raised portion is continuously formed, and as a result, a series of suture lines is formed.

However, since the welded portions forming the suture line are the materials to be joined which are melted by ultrasonic waves and sewn, the welded portions are in a smooth film state. Therefore, when commercialized, these welded portions reflect light. Therefore, for example, when the suture product is used as an automobile interior material, light is diffusely reflected on the suture line formed by each welded portion,
There is a drawback in that the reflected light may hinder driving when it enters the visual field of an occupant, especially a driver.

[0006] Therefore, the technical problem of the present invention is to improve the product quality by stitching using ultrasonic welding to produce a stitched product that does not reflect light at the welded portion.

[0007]

In order to solve such a technical problem, the present invention provides an ultrasonic vibrator capable of generating mechanical vibration energy obtained by converting ultrasonic electric energy, and an ultrasonic vibrator. A rotary vibrator receiving portion which is arranged below the ultrasonic vibrator and is capable of mounting a plurality of sheet-like materials to be joined which have heat melting property and which are arranged to overlap with the ultrasonic vibrator in the thickness direction. The rotary vibrator receiving portion has a rotary shaft arranged orthogonal to the length direction of the sheet-shaped material to be joined, and a rotary shaft fixed to the rotary shaft to move the sheet-shaped material to be joined. A convex formed on the short cylindrical member, which is rotated and is formed by a plurality of short cylindrical members continuously provided on the periphery with a convex portion that comes into pressure contact with the ultrasonic transducer through a sheet-shaped material to be joined. A large number of fine irregularities are formed on the surface of the part.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the accompanying drawings. As shown in FIG. 1, an ultrasonic welding suturing apparatus 10 according to the present embodiment includes an ultrasonic transducer 11 capable of generating mechanical vibration energy obtained by converting ultrasonic electric energy, and a lower portion of the ultrasonic transducer 11. , And a plurality of sheet-like materials to be joined 19, 20 and 2 having heat-melting property, which are arranged so as to overlap with the ultrasonic transducer 11 in the thickness direction.
And a rotary vibrator receiving portion 12 on which 2 can be placed.

The ultrasonic transducer 11 is arranged along the width direction of the sheet-shaped materials to be joined 19, 20, 22 and is formed into a generally rectangular shape. Then, as shown in FIG. 1, the ultrasonic transducer 11 includes an ultrasonic welding suture device 10
The booster 26 is connected and fixed to the lower end of the booster 26, which is also included in the booster 26, and the booster 26 is connected and fixed to the converter 27.

Then, in the converter 27,
The electric signal is converted into mechanical vibration energy, and further, the booster 26 is configured so that the mechanical vibration energy converted in the converter 27 can be further effectively converted into a material to be joined. Further, as shown in FIG. 2, the rotary vibrator receiving portion 12 is disposed below the ultrasonic vibrator 11, and the sheet-shaped materials to be joined 19, 20, 22 are joined.
The rotary shaft 14 arranged orthogonally to the length direction of the sheet, and the sheet-like materials to be joined 19, 2 fixed along the rotary shaft 14
The ultrasonic transducer 11 rotates with the movement of 0, 22.
And a plurality of short cylindrical circular members 13 continuously provided on the periphery with convex portions 25 that are pressed against each other via the sheet-shaped materials to be joined 19, 20, 22.

Then, in this embodiment, as shown in FIG. 3, the convex portions 2 formed on the plurality of short cylindrical members 13 are formed.
A large number of fine irregularities 32 are formed on the surface of 5.
Further, in the present embodiment, as shown in FIG. 1, the sheet-shaped material to be joined includes a core material 19, an upper surface side skin material 20 disposed on the front surface side of the core material 19, and the core material. And a lower surface side skin material 22 arranged on the back surface side of the material 19,
The core material 19, the upper surface side skin material 20 and the lower surface side skin material 22 are
Each of them is configured to be sequentially supplied by the feed roller 18 in the direction of the ultrasonic transducer 11 from the left side in FIG. 1 to the right side in FIG.

Then, as shown in FIG. 1, these sheet-like materials to be joined 19, 20, 22 are ultrasonic transducers 11,
When the suture product 21 is created by being sewn by pressure contact with the rotary vibrator receiving portion 12, the cutter 17 is then used.
Is cut into an appropriate product size. Then, the ultrasonic transducer 11 is continuously brought into pressure contact with the convex portion 25 provided continuously on the peripheral edge of the disk member 13, and as shown in FIG. 4, the upper surface side skin material 20 and the lower surface side skin material. 22 is sewn together by a welded portion 31 having the same shape and size as the surface shape and size of the convex portion 25,
The core material 19 by the feed roller 18, the upper surface side skin material 20
Further, the suture line 29 is continuously formed with the supply of the lower surface side skin material 22.

Therefore, in the ultrasonic welding suturing apparatus 10 according to this embodiment, as described above, the fine projections and depressions 32 are formed on the surface of the projection 25 formed on the peripheral edge of the disk member 23.
Since the ultrasonic transducer 11 and the short cylindrical member 13 are pressure-contacted with each other and the upper surface side skin material 20 and the lower surface side skin material 22 are welded to each other, each welding portion 31 has fine irregularities. Three
The fine irregularities are formed by 2, and the surface of each welded portion 31 is so-called satin-finished and does not reflect light.
As a result, in the suture line 29 formed by such a welded portion 31, it is possible to prevent the incident light from being diffusely reflected even when the light is incident.

Therefore, for example, when the suture product produced by the ultrasonic welding and suturing device 10 according to the present embodiment is used as an interior material for automobiles, each welding portion 31 is used.
It is possible to effectively prevent a situation in which light is diffusely reflected by the suture line 29 formed by, and the reflected light becomes an obstacle to driving when the occupant, particularly, the driver's view comes into view.

[0015]

Since the ultrasonic welding suturing apparatus according to the present invention has the above-described structure, when a suture product is produced, fine unevenness is formed in each welding portion and each welding The surface of the part becomes so-called satin-like and does not reflect light. As a result, in the suture line formed by such a welded portion, the incident light does not diffusely reflect even when the light directly hits it.

As a result, for example, when the suture product produced by the ultrasonic welding and suturing device according to the present invention is used as an interior material for automobiles, light is emitted to the suture line formed by each weld. It is possible to effectively prevent a situation in which diffuse reflection is performed and the reflected light enters the eyes of the occupant and causes an unpleasant feeling, and a situation in which the driver's eyesight interferes with driving.

Therefore, it is possible to produce a suture product in which the suture line does not reflect the light even when the light is directly applied, and it is possible to improve the product quality.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an embodiment of an ultrasonic welding suturing device according to the present invention.

FIG. 2 is a side view of FIG. 1 showing an embodiment of the ultrasonic welding and suturing device according to the present invention.

FIG. 3 shows an embodiment of the ultrasonic welding suturing device according to the present invention, which is a side surface showing fine irregularities formed on the surface of the convex portion provided on the peripheral surface of the disk member constituting the ultrasonic welding suturing device. Fig.

FIG. 4 is a plan view showing a pattern formed by a suture line formed on the surface of a sheet-shaped material to be joined when the sheet-shaped material to be joined is sewn using the ultrasonic welding suturing apparatus according to the present invention.

[Explanation of symbols]

10 Ultrasonic Welding / Suturing Device 11 Ultrasonic Transducer 12 Rotary Oscillator Receiving Section 13 Short Cylindrical Member 14 Rotating Shaft 15 Spacer 16 Guide Member 17 Cutter 18 Feed Roller 19 Core Material 20 Upper Surface Side Skin Material 21 Suture Product 22 Lower Surface Skin Material 25 Convex part 26 Booster 27 Converter 28 Void 29 Welding part 31 Stitching part 32 Fine unevenness

Claims (1)

[Claims] 1. An ultrasonic transducer capable of generating mechanical vibration energy, which is obtained by converting ultrasonic electric energy, and an ultrasonic transducer disposed below the ultrasonic transducer in the thickness direction. And a rotary vibrator receiving portion on which a plurality of heat-fusible sheet-shaped materials to be bonded can be placed, and the rotary vibrator receiving portion has a length of the sheet-shaped materials to be bonded. A rotary shaft arranged orthogonal to the vertical direction, and a convex portion fixed to the rotary shaft and rotated together with the movement of the sheet-shaped material to be joined, and pressed against the ultrasonic transducer via the sheet-shaped material to be joined. Is formed by a plurality of short cylindrical members continuously provided on the peripheral edge, and the ultrasonic transducer is continuously formed on the peripheral edge of the short cylindrical member through a plurality of sheet-shaped materials to be joined having heat melting property. By intermittently press-contacting the surface of the convex portion provided by The suture then may ultrasonic welding suturing apparatus interleaf material, the short cylindrical member the formed convex portion surface in a number of ultrasonic welding suturing apparatus characterized by fine irregularities are formed.