JPH11170404A - Ultrasonic fusion-bonding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic fusion-bonding device which is capable of manufacturing a product at a low equipment cost and a production cost and further, increasing a fusion-bonding rate with stable fusion-bonding quality. SOLUTION: This ultrasonic fusion-bonding device comprises a drive source 31 for a film-like transfer means for transferring a film-like material 21 in the longer direction, and a table 24 for fixing a trembler 28 which shuttles back and forth by a table drive means and a vibrator receiving means 30. Further, the table drive means is structurally connected to the drive source 31 and is driven interlocked with the film-like transfer means. In addition, the trembler 28 and the vibration receiving member 30 structurally fusion-bond the film-like material 21 by ultrasonic wave in an orthogonal direction with the longer direction through shuttling the table 24 forward/backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic fusing apparatus for fusing two or more film materials such as resin films to each other by using ultrasonic waves.

[0002]

2. Description of the Related Art As shown in FIG. 4 to be described later, a film-like material 21 wound in a coil shape is folded in two to form a laminated state, and the film-like material 21 in the laminated state is perpendicular to a longitudinal direction. Conventionally, there is known an ultrasonic fusing apparatus used when fusing and forming a fusing portion 211 to form a laminated film 210. As shown in FIGS. 9 and 10, the ultrasonic fusing apparatus can sequentially and continuously fuse the film-like materials 21 in a laminated state.

[0003] As shown in FIGS. 9 and 10, the ultrasonic welding device 9 includes a horn 92 vibrated by a converter 91.
And a horn receiving member 95 for pressing the film-shaped material 21 by the cylinder 93, both of which are configured to be integrally movable by the robot 97 on the stage 96 with the speed vector V1 and the speed vector V2. .

In the ultrasonic welding device 9, the film material 21 is transferred at a velocity vector V1. The movable part 971 is moved with respect to the base part 972 of the robot 97 at the velocity vector V1 in the same direction as the transfer direction of the film material 21. At the same time, the stage 9 is
6 is moved by the velocity vector V2. Note that the transfer direction coincides with the longitudinal direction of the film-shaped material 21. Further, the direction of the velocity vector V2 coincides with the right angle direction that is perpendicular to the longitudinal direction (the longitudinal direction and the right angle direction are the same as those in FIG. 4).
reference). As a result, the film material 21, the horn 92 and the horn receiving portion 95 are synchronized with each other with the speed vector V1. For this reason, it is possible to ultrasonically fuse the film material 21 in the direction perpendicular to the speed vector V2.

[0005]

However, the above apparatus has the following problems. The robot 97 requires a driving source for driving the movable portion 971 with the speed vector V1 and a driving source for driving the stage 96 with the speed vector V2. That is, the driving source of the robot 97 is 2
Since a set is required, the equipment cost may be high.

In addition to the two sets of driving sources of the robot 97, a driving source for driving the transfer means of the film material 21 is provided.
It is necessary to install a speed detecting device for the film-shaped material 12 so that the speed of 1 becomes the speed vector V1 and to install a synchronous control device linked to this speed detecting device in the movable portion 971. For this reason, equipment costs may increase.

In addition, since vibrations and the like occur when the robot 97 moves, the vibrations and the like affect the welding strength and the welding size, and the quality of the welding may be degraded. In addition, it is difficult to increase the fusing speed for the above-mentioned reason. Therefore, the production capacity cannot be increased, and the production cost may increase.

The present invention has been made in view of the above problems, and has a low equipment cost, a low production cost, a stable fusion quality, and a high fusion speed. It is intended to provide a device.

[0009]

According to a first aspect of the present invention, there is provided a film material transferring means for transferring a plurality of laminated film materials in a longitudinal direction of the film material at a velocity vector V1, and driving the film transferring means. A drive source and a table configured to reciprocate at a speed vector V3 by a table driving means while maintaining an angle α with respect to the longitudinal direction. The table includes a vibrator and a vibrator receiver. A member is fixed, and the vibrator and the vibrator receiving member are disposed so as to face each other, the film-shaped material is disposed between the two, and the vibrator and the vibrator receiving member are further disposed. At least one of the two is an ultrasonic welding apparatus configured to be movable in a direction perpendicular to the surface of the film-shaped material, and the table driving means is provided with respect to the driving source. Are connected through a connecting means, and the table driving means is driven in conjunction with the film material transferring means. Further, the table reciprocates at a speed vector V3, whereby An ultrasonic fusing apparatus is characterized in that the vibrator and the vibration receiving member are configured to ultrasonically fuse the film material in a direction perpendicular to the longitudinal direction at a velocity vector V2.

In the ultrasonic welding apparatus according to the present invention,
It is preferable that the relationship shown in FIG. 3 be established between V1, V2, V3, and α. Note that in FIG.
Since V3 is a vector, the operation in the equation follows the operation rule of the vector.

In the ultrasonic welding apparatus according to the present invention,
The film material is transported at a velocity vector V1. Here, since the film-like material is transported in the longitudinal direction of the film-like material, the direction of V1 coincides with the longitudinal direction. Also,
The table is configured to perform a reciprocating motion at the speed vector V3. Here the table is at an angle α to the longitudinal direction
, The angle between V3 and V1 is α.

The vibrator and the vibrator receiving member fixed to the table are configured to fuse the film material in a direction perpendicular to the longitudinal direction of the film material. Further, since both are configured to fuse the film material at the velocity vector V2, V1 and V2 are perpendicular to each other.
As described above, by configuring the ultrasonic fusion bonding apparatus so as to satisfy the above relationship, the effects according to the present invention can be reliably obtained.

The vibrator and the vibrator receiving member are portions for fusing the film material. That is, the film-shaped material is softened and melted by the ultrasonic waves generated by the vibrator, and the film-shaped material softened by the compression by the vibrator and the vibrator receiving member is joined. The compression can be performed by moving at least one of the vibrator and the vibrator receiving member in a direction perpendicular to the surface of the film material.

The operation of the present invention will be described below. In the ultrasonic welding apparatus according to the present invention, the vibrator and the vibrator receiving member are fixed to the table, and the table driving means is connected to the driving source of the film-like material transferring means via the connecting means. The table driving means is driven in conjunction with the film-like material transferring means. Therefore, both the film material and the table can be transferred and driven by one drive source. For this reason, one drive source, which was conventionally required three units, can be replaced with one drive source, and the equipment cost can be reduced accordingly.

Further, in the prior art, it was necessary to provide a synchronization control device or the like for synchronizing the speed of the film material with the speed of the vibrator and the vibrator receiving member. However, in the present invention, it is not necessary. . Therefore, the equipment cost can be reduced accordingly.

Further, in the present invention, the table on which the vibrator and the vibrator receiving member are fixed reciprocates at the velocity vector V3, so that the vibrator and the vibrating receiving member move in the longitudinal direction with the velocity vector V2. It is configured to ultrasonically fuse a film-like material in a perpendicular direction.

Thus, in the ultrasonic welding apparatus according to the present invention, the vibrator and the vibrator receiving member are moved in one direction (the direction of the velocity vector V3) by one set of driving means, so that the film-like material is formed. Since fusion can be performed, the influence of vibration or the like generated due to the movement can be reduced. For this reason, the influence on the fusion strength and fusion dimension can be reduced, and the fusion quality can be improved. Further, the fusion speed can be further increased.

Thus, by using the ultrasonic welding apparatus according to the present invention, the defective rate of the welding can be reduced, and the operating rate of the welding can be increased. Further, since the speed can be increased, the production capacity can be increased, and the number of equipment can be reduced. That is, the use of the ultrasonic welding apparatus according to the present invention can lower the production cost comprehensively including the effect of reducing the equipment cost itself.

As described above, according to the present invention, the equipment cost is low, the production cost is low, the fusion quality is stable, and the fusion speed can be increased. A dressing device can be provided.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment An ultrasonic fusion device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2,
The ultrasonic fusing apparatus 1 of the present embodiment has a
Material transfer means for transferring the film-like material 21 in the longitudinal direction of the film-like material 21 at a velocity vector V1, a motor as a drive source 31 for driving the film-like material transfer means, and an angle α with respect to the longitudinal direction. And a table 24 configured to reciprocate at a speed vector V3 by a table driving means. The film material transfer means is a drive roller 39 described later, and the table drive means is a cam 41 and a cam follower 45.

A vibrator 28 and a vibrator receiving member 30 are fixed to the table 24, and the vibrator 28
And the vibrator receiving member 30 are disposed so as to face each other, and the film-shaped material 21 is disposed therebetween. Further, the vibrator 28 and the vibrator receiving member 3
0 is at least one of the film-like materials 21
Is configured to be movable in the vertical direction with respect to the surface.

Further, the table driving means is connected to the driving source 31 via a connecting means, and the table driving means is driven in conjunction with the film material transferring means. Further, the table 24
Performs a reciprocating motion at the velocity vector V3, so that the vibrator 28 and the vibration receiving member 30 ultrasonically fuse the film-shaped material 21 with the velocity vector V2 in a direction perpendicular to the longitudinal direction. Have been. Note that the connection means is the transmission shaft 34.

The details will be described below. FIG. 2 is a right side view of the ultrasonic welding apparatus according to the present invention, and FIG. 1 is a drawing viewed from the direction A in FIG. FIG. 4 shows a film-like material 21 to be fused by the ultrasonic fusing apparatus 1 according to the present embodiment. The film-like material 21 wound in a coil shape is folded in two to form a laminated state. A certain film-like material 21 is introduced into the ultrasonic fusing apparatus according to the present example, and is fused in a direction perpendicular to the longitudinal direction, thereby forming a fused portion 211 to form a laminated film 210. The film material 21
Is a polyethylene film having a width of 83 mm and a thickness of 0.025 mm. Then, it is introduced into the ultrasonic fusion device 1 in a state where it is folded in two to a width of 41.5 mm and two sheets are overlapped.

The drive source 31 comprises a motor. The drive source 31 includes a transmission shaft 34 supported by bearings 32 and 33.
The drive roller 39 supported by the bearings 36 and 37 via the bevel gears 35 and 38 is rotated. The drive roller 39 is a film-like material transfer means, and the drive roller 39
And a film-like material 21 by a pressing roller 40 described later.
Is continuously transported in the longitudinal direction at the velocity vector V1. The pressing roller 40 is configured to press the film-shaped material 21 against the driving roller 39 using a spring or the like not shown in FIGS.

A pair of LM guides 23 are provided on the machine base 22 so as to be at 45 degrees with respect to the longitudinal direction which is the transfer direction of the film material 21. A table 24 is fixed on the machine base 22, and the table 24 is configured to reciprocate by a cam 41 driven by a drive source 31 of a film-like material transferring means. The speed vector of the reciprocating motion is a speed vector V3 which is twice as large as the transfer speed of the film material 21 and the speed vector V1. The table 24 reciprocates in synchronization with the film material 21.

The rotation transmitted to the transmission shaft 34 rotates the cam 41 via bevel gears 42 and 43. Further, the cam 41 is provided with the gear box 4.
The slider 46 to which the cam follower 45 is fixed is swingable with respect to the slider 4 by the LM guide 47. The rack 50 fixed to the gearbox 44
The pin 51 is fixed to the slider 46. Further, a pinion 48 rotatably fitted to the pin 51 is provided.
Is fixed to the table 24. As a result, the transmission shaft 3 is transmitted via the cam 41, the slider 46, the pin 51, the pinion 48, and the rack 49.
4 is converted into a reciprocating motion of the table 24.

On the upper part of the table 24, four legs 25
The plate 26 is fixed via the. A converter 27 for generating mechanical vibration energy by a power source (not shown) is fixed to the plate 26. A vibrator 28 configured to amplify a vibration amplitude for vibrating the surface of the film-shaped material 21 is fixed to the converter 27.

On the other hand, a vibrator receiving member 30 configured to be vertically movable by an air cylinder 29 is fixed to the table 24 in a state where the vibrator 28 faces the vibrator 28 with the film-shaped material 21 interposed therebetween. . Table 2
A spring 52 is attached to 4 such that the cam follower 45 is pressed against the cam 41.

In the above configuration, with the vibrator 28 vibrated, the vibrator receiving member 30 is raised and the motor 3
1 is driven. Thereby, the forward path of the table 24 (FIG. 1)
In this case, the table advances from left to right in the drawing).
0 is the film material 2 relative to the film material 21
It can move only in a direction perpendicular to the one moving direction. Then, ultrasonic waves are applied to the film material 21 by the vibrator 28, and the softened film material is compressed by the vibrator receiving member 30 and ultrasonically welded.

On the return path of the table 24 (when the table advances from right to left in FIG. 1), the vibrator receiving member 3 is moved by the cylinder 29.
0 is lowered. Due to the continuous repetition of this operation, the film-shaped material 21 is fused in the direction perpendicular to the longitudinal direction while being continuously transferred.

In the ultrasonic welding apparatus 1 according to the present embodiment, α is 45 degrees, and the magnitude of V3 is ^21/2 times V1. If this value is substituted into the two equations shown in FIG. , V1 = V2 for both, and it can be seen that the equation according to FIG.

The vibrator receiving member 30 of the ultrasonic welding apparatus 1 in this embodiment is slidably fitted to a guide 53 fixed to the table 24,
To move up and down. The contact surface of the vibrator receiving member 30 with the film material 21 has an R shape with respect to the direction perpendicular to the film material 21, so that the film material 21 is hardly caught. The rotation direction of the vibrator receiving member 30 is regulated by the cylinder 29 so that the R shape of the vibrator receiving member 30 does not shift with respect to the direction perpendicular to the film-shaped material 21.

The vibration amplitude oscillated from the converter 27 is amplified and transmitted to the contact surface of the vibrator 28 with the film material 21 via the booster 54 and the vibrator 28, and the rectangular longitudinal direction of the contact surface is in the form of a film. The booster 54 is fixed to the plate 26 at a node (non-vibration portion) of the booster 54 so as to coincide with the direction perpendicular to the material 21.

Next, the operation and effect of this embodiment will be described. In the ultrasonic welding apparatus 1 according to the present embodiment, the table driving means is connected to the driving source 31 of the film-shaped material transferring means via the connecting means, and the table driving means is linked with the film-shaped material transferring means. Is configured to be driven. Therefore, both the film material 21 and the table 24 can be transferred and driven by one drive source 31. For this reason, one drive source, which was conventionally required three units, can be replaced with one drive source, and the equipment cost can be reduced accordingly.

In this embodiment, the bevel gear 3
5, 38, 42, 43, racks 49, 50, pinion 4
Due to the backlash removal adjustment 8 and the play removal effect of the spring 52, the synchronization between the film-like material 21 and the vibrator 28 and the vibrator receiving member 30 fixed to the table 24 is semipermanently secured. Therefore, the fusion can be performed in a stable state without being affected by the rotation variable of the motor.

Further, due to the above-mentioned lash removal adjustment and backlash removal effects, there is no need for a synchronization control device for synchronizing the speed of the film-like material 21 with the speed of the vibrator 28 and the vibrator receiving portion 30. Therefore, the equipment cost can be reduced accordingly.

The backlash removal adjustment means that the bevel gears 35, 38, 42, and 43 move the bevel gears in the axial direction, and the racks 49, 50, and the pinion 48 adjust the distance between the racks and rotate. Is to adjust to the minimum backlash required. The rattling effect is
This is an effect that the backlash adjusted by the backlash removal adjustment is always kept on one side by the constant pressing force of the spring.

In this embodiment, the table 24 to which the vibrator 28 and the vibrator receiving member 30 are fixed reciprocates at the speed vector V3, so that the two move in the direction perpendicular to the longitudinal direction with the speed vector V2. Material 2
1 is ultrasonically fused.

That is, the vibrator 28 and the vibrator receiving member 30
Move in one direction (the direction of the velocity vector V3), the film material 21 can be fused.
It is possible to reduce the influence of vibration or the like generated by the movement. For this reason, the influence on the fusion strength and fusion dimension can be reduced, and the fusion quality can be improved.
Further, the fusion speed can be further increased.

Therefore, by using the ultrasonic welding apparatus 1 according to this embodiment, the defective rate of the welding can be reduced, and the operating rate of the welding can be increased. Further, since the speed can be increased, the production capacity can be increased, and the number of equipment can be reduced.
That is, the use of the ultrasonic welding apparatus 1 can lower the production cost comprehensively including the effect of reducing the equipment cost itself.

Therefore, according to this example, the equipment cost is low, the production cost is low, and the fusion quality is stable.
It is possible to provide an ultrasonic fusion device capable of increasing the fusion speed.

The examples of the form of the vibrator 28 and the vibrator receiving member 30 of the ultrasonic welding apparatus 1 according to this embodiment include four examples shown in FIGS. That is, the vibrator 2
There are a rotary type and a fixed type for the vibrator 8 and the vibrator receiving member 30, respectively, and these can be appropriately combined. FIG. 5 shows the rotary type oscillator 28 and the oscillator receiving member 30. FIG. 6 illustrates the rotary type oscillator 28 and the fixed type oscillator receiving member 30. FIG. 7 shows a fixed oscillator 2
8 and the rotary type vibrator receiving member 30 are described. FIG. 8 illustrates a fixed-type vibrator 28 and a vibrator receiving member 30.

In the vibrator 28 and the vibrator receiving member 30 in the forms shown in FIGS. 5 to 7, the film-like material moves synchronously around the outer periphery of the vibrator 28 or the vibrator receiving member 30 by rotating the vibrator 28 or the vibrator receiving member 30. However, since no slip occurs, there is an advantage that there is little meandering and the straightness of movement is good.

However, when the thickness of the film-shaped material 21 becomes less than 0.05 mm, the portions of the vibrator 28 and the vibrator receiving member 30 which are always cooled by the rotation of the vibrator 28 and the vibrator-receiving member 30 contact the film-shaped material 21. There is a possibility that sufficient fusion may not be performed due to heat radiation and minute rotation fluctuations of both influence. Therefore, when the thickness of the film-shaped material 21 is less than 0.05 mm, it is preferable to use the fixed vibrator 28 and the vibrator receiving member 30 as shown in FIG.

In this example, a single film-shaped material folded in two and superimposed was introduced and fused. Of course, it is also possible to separately supply two different film-like materials and to fuse them together. Furthermore, in the present embodiment, the vibrator receiving member 30 has a structure capable of moving up and down, but a structure in which the vibrator 28 can move up and down may be employed. Further, a structure in which both can move up and down can be adopted.

[Brief description of the drawings]

FIG. 1 is a plan view of an ultrasonic fusion device according to an embodiment.

FIG. 2 is a side view of the ultrasonic fusion device according to the embodiment.

FIG. 3 is an explanatory view of a main part of the ultrasonic fusion device according to the embodiment.

FIG. 4 is an explanatory view of a film material according to the embodiment.

FIG. 5 is an explanatory view of a rotary vibrator and a vibrator receiving member according to the embodiment.

FIG. 6 is an explanatory view of a rotary type vibrator and a fixed type vibrator receiving member according to the embodiment.

FIG. 7 is an explanatory diagram of a fixed-type vibrator and a rotary-type vibrator receiving member according to the embodiment;

FIG. 8 is an explanatory view of a fixed-type vibrator and a vibrator receiving member according to the embodiment.

FIG. 9 is a plan view of an ultrasonic fusion device according to the related art.

FIG. 10 is a side view of an ultrasonic fusion device according to the related art.

[Explanation of Codes] . . Ultrasonic fusion device, 21. . . Film-like material, 24. . . Table, 28. . . Vibrator, 30. . . 30. vibrator receiving member; . . Drive source,

Claims (1)

[Claims] 1. A film material transfer means for transferring a plurality of laminated film materials in a longitudinal direction of the film material at a velocity vector V1, a drive source for driving the film material transfer means, A table configured to perform a reciprocating motion at a velocity vector V3 by a table driving means while maintaining the angle α, wherein a vibrator and a vibrator receiving member are fixed to the table, and The vibrator and the vibrator receiving member are disposed so as to face each other, the film-like material is disposed between the two, and at least one of the vibrator and the vibrator receiving member is provided with the vibrator and the vibrator receiving member. An ultrasonic fusing apparatus configured to be movable in a direction perpendicular to a surface of a film material, wherein said table driving means is connected to said driving source via a connecting means. The table driving means is driven in conjunction with the film material transferring means, and further, the table reciprocates at a speed vector V3, whereby the vibrator and the vibration receiving member are moved. The ultrasonic fusing apparatus is configured to ultrasonically fuse the film material in a direction perpendicular to the longitudinal direction at a velocity vector V2.