JP3204194B2 - Ultrasonic welding fusing 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 welding and fusing method in which a sheet material such as a film or a nonwoven fabric is sandwiched between a tool horn to which ultrasonic waves are transmitted and a processing roller to weld or melt the sheet material. Related to the device.

[0002]

2. Description of the Related Art As an example of this type of ultrasonic welding and fusing apparatus, there is an apparatus described in Japanese Patent Publication No. 62-8296. The apparatus includes a feeding mechanism for feeding a sheet material, a horn rotating mechanism for rotating a tool horn in accordance with a feeding operation of the sheet material, a roller rotating mechanism for rotating a processing roller in accordance with a feeding operation of the sheet material, and a tool horn. And a moving mechanism for moving the processing roller in a direction orthogonal to the sheet material feeding direction.

In the above apparatus, the sheet material is welded or melted by a tool horn and a processing roller while feeding the sheet material, so that a welding line or a fusing line, that is, a processing shape, is formed in the sheet material feeding direction. A processing straight line can be obtained. Further, by moving the tool horn and the processing roller in a direction perpendicular to the sheet material feeding direction while the sheet material is stopped, a processing straight line along a direction perpendicular to the sheet material feeding direction is formed as a processing shape. Can be obtained.

[0004]

However, in the above-described conventional structure, when the sheet material is welded or blown, for example, there is a case where it is desired to obtain a curved processing shape, that is, a processing curve, the above-described apparatus does not. Only linear processing of sheet material was possible. On the other hand, Japanese Patent Application Laid-Open No. 6-297608 discloses an example of an apparatus configured to obtain a processing curve by forming a sheet material into a curve.

[0005] In this apparatus, the shape of the processing roller or the tool horn is made a special shape so that a required processing curve can be obtained. However, there is a problem that a specially shaped processing roller or tool horn is considerably expensive. In addition, since it is necessary to change the shape of the processing roller and the tool horn according to the type of the processing curve, it was necessary to prepare various types of processing rollers and tool horns having a special shape, which was extremely expensive. . Furthermore, since only a processing curve of a type corresponding to the prepared processing roller or tool horn can be obtained, a processing shape desired by a user may not be obtained in some cases.

On the other hand, the inventor of the present invention has an arrangement capable of obtaining a processing curve as a processing shape, but is capable of reducing manufacturing cost and obtaining a desired processing shape. A welding and fusing device has been invented and has already been filed (Japanese Patent Application No. 9-81032). In this ultrasonic welding and fusing apparatus, when the processing roller and the tool horn are reciprocated in a direction intersecting with the feeding direction of the sheet material while feeding the sheet material, the feeding speed of the sheet material and the moving speed of the processing roller and the tool horn are used. In addition, the moving direction and the like can be variously adjusted. This makes it possible to obtain a processing straight line oblique to the sheet material feeding direction or a curved processing curve desired by the user as the processing shape of the sheet material.

[0007] In particular, in the above apparatus, the processing roller is configured to be rotatable around the axis of the tool horn. Therefore, when the processing roller and the tool horn are moved while feeding the sheet material, the processing roller is moved. By turning, it is possible to prevent wrinkles or the like from occurring in the sheet material. Thereby, the processing quality of the sheet material can be improved.

[0008] In order to obtain a plurality of parallel processing straight lines in a diagonal direction or a processing curve such as a circle or an ellipse as a processing shape by the above apparatus, it is necessary to reversely feed the sheet material. However, for example, when the sheet material that has been blown is reversely fed as the processing, the positioning of the processing start position may not be accurately performed, and the processing accuracy may be reduced. This is a problem to be improved.

Accordingly, an object of the present invention is to provide an ultrasonic welding and fusing apparatus which can obtain a desired processed shape, can eliminate the need to reversely feed a sheet material, and can improve processing accuracy. It is in.

[0010]

An ultrasonic welding and fusing apparatus according to the present invention has a tool horn and a processing roller to which ultrasonic waves are transmitted, and feeds a sheet material between the tool horn and the processing roller to transmit the sheet material. A plurality of ultrasonic processing units for welding or fusing the sheet material, a plurality of unit movement driving means for moving the plurality of ultrasonic processing units in a direction intersecting with the feeding direction of the sheet material, and rotating the plurality of processing rollers It is characterized in that it comprises a plurality of roller rotation drive means for rotating the plurality of processing rollers and a plurality of roller rotation drive means for rotating the plurality of processing rollers.

According to the above construction, the ultrasonic processing unit, that is, the processing roller and the tool horn are reciprocated in the direction intersecting the feeding direction of the sheet material while feeding the sheet material. And at this time, the feed speed of the sheet material,
When the moving speed and the moving direction of the ultrasonic processing unit are variously adjusted, a processing straight line oblique to the feeding direction of the sheet material or a processing curve desired by the user is obtained as the processing shape of the sheet material. be able to. Further, in the above configuration, since the processing roller is configured to be rotatable, it is possible to prevent the sheet material from being wrinkled.
In addition, in the above configuration, since a plurality of ultrasonic processing units are provided, a plurality of parallel processing straight lines in a diagonal direction and a processing curve such as a circle or an ellipse are obtained as a processing shape. There is no need to reverse the material. Thereby, the processing quality and processing accuracy of the sheet material can be improved.

Further, in the case of the above configuration, it is preferable that a plurality of ultrasonic processing units are arranged side by side along the sheet material feeding direction. Further, it is more preferable to provide a sheet pitch adjusting means for adjusting the length of a portion of the sheet material located between the plurality of ultrasonic processing units.

Further, the seat pitch adjusting means may be
A pitch adjusting roller provided so as to be located between the plurality of ultrasonic processing units on the upper surface side or the lower surface side of the sheet material and movably provided in a direction intersecting the sheet surface of the sheet material. Is a good configuration. It is also a preferable configuration that the sheet pitch adjusting means is constituted by a pitch adjusting unit moving means for moving the ultrasonic processing unit in a feeding direction of the sheet material.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, FIGS. 1 to 4 are views showing the entire configuration of the ultrasonic welding and fusing apparatus 1, and FIG.
1 is a front view of the ultrasonic welding and fusing apparatus 1, and FIG. 2 is II-II in FIG.
FIG. 3 is an ultrasonic welding and fusing apparatus 1 along a line.
FIG. 4 is a top view of the ultrasonic welding and fusing apparatus 1. 1 to 4, a main body frame 2 of the ultrasonic welding and fusing apparatus 1 includes a left side plate 3 and a right side plate 4 disposed in parallel at a predetermined distance, and a lower end of the side plates 3 and 4. It comprises a front connecting member 5 and a rear connecting member 6 for connecting the front and rear ends.

At the center between the two side plates 3 and 4 in the vertical direction, a sheet material 7 is placed, for example, in the horizontal direction (FIG. 3).
Rollers 8, 9, 1 for transferring from middle left to right)
0, 11, 12, 13, and 14 are provided rotatably. Here, the rollers 8 and 9 are disposed vertically at the left end of the side plates 3 and 4 in FIG. 3, and are configured to sandwich the sheet material 7 therebetween. The lower roller 9 of the rollers 8 and 9 is configured to be rotationally driven via a belt transmission mechanism 16 by a roller drive motor 15 disposed on the right side surface of the right side plate 4. The roller drive motor 15 is composed of, for example, an AC servomotor. The belt transmission mechanism 16 includes a roller drive motor 15
, A driven pulley provided on the roller 9, and a belt wrapped around these pulleys.

The rollers 10 and 12 are disposed so as to freely rotate at the center of the side plates 3 and 4 in FIG. 3, and are configured to place the sheet material 7 thereon. Further, the roller 11 is located between the rollers 10 and 12, and is disposed so as to be movable in a direction intersecting the sheet surface of the sheet material 7, for example, a vertical direction in FIG.
The roller 11 is a roller that rotates freely, and is configured to press the sheet material 7 from the upper surface side and draw the sheet material 7 downward. Roller 11
Is a pitch adjusting roller.

Here, the mechanism for moving the pitch adjusting roller 11 up and down comprises, for example, a ball screw and a motor for driving the ball screw to rotate. Hereinafter, this configuration will be briefly described. First, at both end portions of the pitch adjusting roller 11 on the inner surface sides of the side plates 3 and 4, threaded rods 17 constituting ball screws are disposed so as to extend in the vertical direction. Each of the threaded rods 17 is a rod-shaped member having a threaded portion formed on an outer peripheral portion, and is rotatably provided. Each screw rod 17 is configured to be driven to rotate forward and backward by a pitch adjusting roller feed motor 19 via a belt transmission mechanism 18. The pitch adjusting roller feed motor 19 is constituted by, for example, an AC servomotor.

Both ends of the pitch adjusting roller 11 are rotatably supported by bearings (not shown) which are screwed with the respective screw rods 17 to form ball screws. In the case of this configuration, when each screw rod 17 is rotationally driven by the pitch adjusting roller feed motor 19, the bearing portion and, consequently, the pitch adjusting roller 11 are moved upward or downward in FIG. It is configured. By controlling the forward rotation amount or the reverse rotation amount of the pitch adjustment roller feed motor 19, the vertical position of the pitch adjustment roller 11 can be set accurately. In this case, the pitch adjusting roller 11 constitutes a sheet pitch adjusting unit.

Further, the rollers 13 and 14 are disposed vertically at the right end portions of the side plates 3 and 4 in FIG. 3 so as to sandwich the sheet material 7 therebetween. These rollers 13,
The lower roller 14 of the 14 is configured to be rotationally driven via a belt transmission mechanism 21 by a roller drive motor 20 disposed on the right side surface of the right side plate 4. The roller drive motor 20 is composed of, for example, an AC servomotor. The belt transmission mechanism 21 includes a drive pulley provided on the rotation shaft of the roller drive motor 20, a driven pulley provided on the roller 14, and a belt wrapped around these pulleys.

In the above configuration, when the roller drive motors 15 and 20 are driven to rotate, the rollers 9 and 1 are rotated.
4 is rotated so that the sheet material 7 is fed rightward in FIG. In this case, the roller drive motor 1
Reference numerals 5 and 20 constitute sheet feeding means for feeding the sheet material 7.

The sheet material 7 is formed, for example, by stacking two nonwoven fabrics. The sheet material 7 is supplied from the sheet material supply device 22 to the ultrasonic welding and fusing device 1 as shown in FIGS. It is configured. In the sheet material supply device 22, nonwoven fabrics 23 a and 24
a are wound up and down, and two rolls 23 and 24 are vertically arranged, and these two rolls 23 and
24 is provided rotatably. Guide rollers 25a, 2R are located on the right side of the two rolls 23, 24 in FIG.
5b, 25c, and 25d are provided rotatably. By these guide rollers 25a to 25d, two rolls 2
The two nonwoven fabrics 23a and 24a derived from 3 and 24 are overlapped, guided to the right, and supplied between the rollers 8 and 9 of the ultrasonic welding and fusing apparatus 1.

The nonwoven fabrics 23a and 24a are made of a synthetic resin such as nylon, polyester or polypropylene. The sheet material 7 is not limited to the nonwoven fabrics 23a and 24a, but may be a synthetic resin film or a synthetic fiber cloth, or a cloth made of glass fiber (glass fiber). Is also good. Further, as the sheet material 7, a material in which three or more of the above-described various cloths and films are stacked may be used. Furthermore, in the case of performing only the cutting, a material using only one of the above-described various cloths and films may be used as the sheet material 7.

As shown in FIGS. 1 to 3, a plurality of, for example, two ultrasonic processing units 26 and 27 are provided in the main body frame 2 of the ultrasonic welding and fusing apparatus 1 in the feeding direction of the sheet material 7. It is provided so that it may line up along. Since the specific configuration of these two ultrasonic processing units 26 and 27 and the specific configuration for moving and driving each of the ultrasonic processing units 26 and 27 are the same, the ultrasonic processing unit 26 on the right side in FIG. Will be described only in detail.

The ultrasonic processing unit 26 is provided with the sheet material 7
And a processing roller 29 disposed above the sheet material 7. And
The tool horn 28 and the processing roller 29 (that is, the ultrasonic processing unit 26) are provided so as to be able to reciprocate, for example, in a direction (horizontal direction in FIG. 1) orthogonal to the feeding direction of the sheet material 7.

First, the structure for reciprocating the tool horn 28 will be specifically described. A tool horn 28 and an ultrasonic vibrator 30 that supplies (transmits) ultrasonic waves to the tool horn 28 are attached to a first movable member 31. The movable member 31 includes a base 32 arranged horizontally and a support plate 33 projecting downward from the lower surface of the base 32. This support plate 3
3, two mounting members 34, 3
5 project in parallel to the left at a predetermined distance. Through holes are formed in these mounting members 34 and 35, and a substantially cylindrical ultrasonic transducer 30 is inserted and fixed in these through holes.

The tool horn 28 is connected and fixed to the upper portion of the ultrasonic vibrator 30 via connecting members 36 and 37. Thereby, the ultrasonic vibration generated in the ultrasonic vibrator 30 is transmitted to the tool horn 28. In the upper part of the tool horn 28, FIG.
As shown in FIG. 0, a cylindrical portion 28a having a somewhat thick peripheral wall portion is provided.

Further, below the base 32 of the first movable member 31 between the side plates 3 and 4 of the main body frame 2, a screw rod 39 constituting a ball screw 38 and a ball guide 4
The guide rods 41 constituting 0 are arranged in parallel. The threaded rod 39 is a rod-shaped member having a threaded portion formed on the outer periphery, and is rotatably provided on the side plates 3 and 4. The guide rod 41 is fixed to the side plates 3 and 4. The screw rod 39 is configured to be driven to rotate forward and reverse through a belt transmission mechanism 43 by a processing unit feed motor 42 disposed on the right side surface of the right side plate 4. The machining unit feed motor 42 is constituted by, for example, an AC servomotor.

Further, on the lower surface of the base 32, a bearing portion 32 which is screwed with a screw rod 39 to form a ball screw 38 is provided.
a, 32a, and bearing portions 32b, 32b that slidably fit with the guide rod 41 to form the ball guide 40 are protruded downward. In the case of this configuration, when the screw rod 39 is rotationally driven by the processing unit feed motor 42,
According to the rotation direction, the bearing portion 32a and thus the base 32
The first movable member 31 is configured to be moved leftward or rightward in FIG. That is, the first movable member 31 is driven by rotating the screw rod 39 forward or reverse.
Consequently, the tool horn 28 and the ultrasonic vibrator 30 can be moved to the left or right in FIG.

Next, the processing roller 29 is moved to the sheet material 7.
The structure for reciprocating in the direction orthogonal to the feed direction of the moving direction will be specifically described. The processing roller 29 is attached to the second movable member 45. This movable member 45
Is composed of a base 46 arranged horizontally, and a substantially U-shaped support member 47 protruding downward from the lower surface of the base 46 and rotatably provided. A through hole is formed in the center of the base 46, and a turning shaft 48 is rotatably mounted in the through hole. An upper wall 47a (see FIG. 2) of the support member 47 is connected to a lower end of the turning shaft 48. The axis of the revolving shaft 48 is configured to coincide with the axis of the cylindrical portion 28a of the tool horn 28.

On the upper surface of the base 46, a processing roller turning motor 49 is provided. The turning force of the processing roller turning motor 49 is configured to be transmitted to the turning shaft 48 via the belt transmission mechanism 50. That is, the turning shaft 48 and the supporting member 47 are
9 is driven to rotate. in this case,
The processing roller turning motor 49 constitutes a roller turning drive unit. The processing roller turning motor 49 is, for example, an AC
It is composed of a servo motor. The belt transmission mechanism 50 includes a drive pulley provided on the rotation shaft of the processing roller rotation motor 49, a driven pulley provided on the rotation shaft 48,
It is composed of a belt wrapped around these pulleys.

The opposing side wall 4 of the support member 47
A processing roller unit 51 (see FIG. 2) is disposed between 7b and 47c. An elevating cylinder 5 for raising and lowering the processing roller 29 is provided above the processing roller unit 51.
2 are provided. A roller support member 53 having a substantially U-shape is provided at a lower end portion of the extendable rod 52 a of the elevating cylinder 52. This roller support member 53
The processing roller 29 is rotatably provided via a shaft 54 between the opposed side wall portions 53a and 53b.

Further, the processing roller 29 is configured to be rotationally driven via a belt transmission mechanism 56 by a processing roller rotation motor 55 disposed on the right side surface of the processing roller unit 51 in FIG. The processing roller rotation motor 55 constitutes a roller rotation drive unit. The processing roller rotation motor 55 is constituted by, for example, an AC servomotor. The belt transmission mechanism 56 includes a drive pulley provided on the rotation shaft of the processing roller rotation motor 55, a driven pulley provided on the shaft 54 of the processing roller 29, and a belt wound on these pulleys. Also,
In the case of the above configuration, the roller supporting member 53 and, consequently, the processing roller 29 are vertically moved by the lifting cylinder 52.

On the other hand, below the base 46 of the second movable member 45 between the side plates 3 and 4 of the body frame 2, a screw rod 58 constituting a ball screw 57 and a ball guide 5
9 are arranged in parallel. The threaded rod 58 is a rod-shaped member having a threaded portion formed on an outer peripheral portion, and is rotatably provided on the side plates 3 and 4. The guide bar 60 is fixed to the side plates 3 and 4. The screw rod 58 is connected to the machining unit feed motor 4.
2 is configured to be driven forward and reverse through the belt transmission mechanism 43. In this case, the screw rod 5
8 and the screw bar 39 are driven to rotate in conjunction with each other.

On the lower surface of the base 46, a bearing 46 is screwed with a screw rod 58 to form a ball screw 57.
a, 46a, and bearings 46b, 46b slidably fitted to the guide rod 60 to form the ball guide 59 are protruded downward. In the case of this configuration, when the screw rod 58 is rotationally driven by the processing unit feed motor 42,
The bearing 46a and, consequently, the base 46 corresponding to the rotation direction.
The second movable member 45 is configured to be moved leftward or rightward in FIG. That is, the screw rod 58 is driven forward or reverse to rotate the second movable member 45.
Consequently, the processing roller 29 can be moved leftward or rightward in FIG.

Therefore, in the present embodiment, the tool horn 28 and the processing roller 29 () are driven by the processing unit feed motor 42 to rotate the two screw rods 39 and 58 in forward and reverse directions in conjunction with each other via the belt transmission mechanism 43. That is, the ultrasonic processing unit 26) can be moved to the left or right in FIG. In the case of this configuration, the processing unit feed motor 42 constitutes a unit movement driving unit. The processing unit feed motor 42
Is a horn movement driving means for moving and driving the tool horn 28, and also a roller movement driving means for moving and driving the processing roller 29.

In the case of the above configuration, as shown in FIG. 10, the upper end surface portion 28b of the cylindrical portion 28a of the tool horn 28 is provided.
The processing roller 29 is configured to be mounted thereon. Thus, the sheet material 7 can be sandwiched between the tool horn 28 and the processing roller 29. At this time, the axis of the turning shaft 48 of the processing roller 29 (and the support member 47) and the axis of the tool horn 28 (that is, the rotation center C (see FIG. 10)) are configured to coincide. I have. In other words, the processing roller 29 is configured to rotate around the axis C of the tool horn 28. Note that the center of rotation of the processing roller 29 does not necessarily need to be the axis of the tool horn 28,
An appropriate point on the tool horn 28 may be set as the turning center.
Further, although the shape of the tool horn 28 is configured to be substantially cylindrical, it is not limited to this, and the tool horn 28 may be configured to have a columnar shape, a prismatic shape, a disk shape, a rectangular shape, a polygonal shape, or the like.

On the other hand, the ultrasonic processing unit 2 on the left side in FIG.
Since the specific configuration of 7 is the same as that of the ultrasonic processing unit 26 on the right side in FIG. 1 described above, the same portions are denoted by the same reference numerals, and detailed description will be omitted.

FIG. 5 is a diagram showing the electrical configuration of the ultrasonic welding and fusing apparatus 1 by combining functional blocks.
In FIG. 5, for example, a controller 61 as a control means is composed of a circuit mainly composed of a microcomputer, for example, and has a function of controlling the overall operation of the ultrasonic welding and fusing apparatus 1 (that is, a control for realizing this function). Program).

The controller 61 includes six sensors for one ultrasonic processing unit 26, specifically, a unit movement (-limit) detection sensor 62, a unit movement (+ limit) detection sensor 63, and a unit movement origin detection. The sensor receives the detection signals from the sensor 64, the processing roller turning origin detection sensor 65, the processing roller upper limit detection sensor 66, and the processing roller lower limit detection sensor 67, and includes six sensors relating to the other ultrasonic processing unit 27, specifically, ,
A unit movement (-limit) detection sensor 62, a unit movement (+ limit) detection sensor 63, a unit movement origin detection sensor 64, a processing roller turning origin detection sensor 65,
It is configured to receive each detection signal from the processing roller upper limit detection sensor 66 and the processing roller lower limit detection sensor 67.

Here, the unit movement (-limit) detection sensor 62 is a sensor for detecting that the ultrasonic processing units 26 and 27 have moved to one (for example, left) limit position. Unit movement (+ limit) detection sensor 6
Reference numeral 3 denotes a sensor that detects that the ultrasonic processing units 26 and 27 have moved to the other (for example, right) limit position. The unit movement origin detection sensor 64 is a sensor that detects that the ultrasonic processing units 26 and 27 are located at the origin of movement. Processing roller turning origin detection sensor 65
Is a sensor that detects the turning origin of the processing roller 36. The processing roller upper limit detection sensor 66 is
Is a sensor that detects the upper limit position. The processing roller lower limit detection sensor 67 is a sensor that detects the lower limit position of the processing roller 36.

The controller 61 includes three detection sensors for the movement of the pitch adjustment roller 11, specifically, a pitch roller movement (-limit) detection sensor 68,
It is configured to receive each detection signal from the pitch roller movement (+ limit) detection sensor 69 and the pitch roller movement origin detection sensor 70. The pitch roller movement (-limit) detection sensor 68 is a sensor that detects that the pitch adjustment roller 11 has moved to one (eg, upper) limit position. In the pitch roller movement (+ limit) detection sensor 69, the pitch adjustment roller 11 is the other (for example, below).
Is a sensor that detects that it has moved to the limit position. The pitch roller movement origin detection sensor 70 is a sensor that detects that the pitch adjustment roller 11 is located at the origin of movement.

Further, the controller 61 is configured to control the energization of the roller drive motors 15 and 20 via servo drivers 71 and 72. At this time, the controller 61 can recognize the feed speed of the sheet material 7 based on the rotation speed of the roller drive motors 15 and 20. Also, since the sheet material 7 is sent out by rotating the rollers 8, 9, 13, and 14 by the two roller drive motors 15, 20, it is possible to apply an appropriate tension to the sheet material 7. It is.

Further, the controller 61 is configured to drive and control five loads on one ultrasonic processing unit 26, respectively. Specifically, the controller 61 controls energization of the processing unit feed motor 42, the processing roller rotation motor 49, and the processing roller rotation motor 55 via servo drivers 73 to 75, and controls the ultrasonic vibrator 30 by the ultrasonic oscillator 76. Ultrasonic vibration is applied to drive and control the lift cylinder 52 via a solenoid valve 77. In the same manner, the controller 61 sets the 5
It is configured to drive-control each of the loads. The controller 61 is configured to control the power supply to the pitch adjusting roller feed motor 19 via the servo driver 78.

Each of the motors has a built-in rotary encoder, and is configured to supply a signal from the rotary encoder to each servo driver. Thus, the controller 61 is configured to be able to perform feedback control of the number of rotations (rotation angle) of each motor with high accuracy.

On the other hand, the controller 61
It is configured to execute transmission and reception of a command signal, data, and the like between itself and the device. In this personal computer 79, an operator can draw and edit a processing shape (processing curve). And personal computer 79
A processing program (for example, processing control data for controlling each motor or the like of the ultrasonic welding and fusing apparatus 1) for executing the processing in the ultrasonic welding and fusing apparatus 1 based on the edited processing shape. It has a function of creating and transmitting this machining program to the controller 61 of the ultrasonic welding and fusing apparatus 1. Further, the operator operates the keyboard and mouse of the personal computer 79 or operates an operation switch of an operation panel provided on the ultrasonic welding and fusing apparatus 1 to thereby operate the ultrasonic welding and fusing apparatus 1.
Is given to the controller 61.

Next, the processing operation of the ultrasonic welding and fusing apparatus 1 will be described with reference to FIGS. First, referring to FIG. 10, one ultrasonic processing unit 26
The control contents of the controller 61 when welding or fusing the sheet material 7 will be described. In this case, the sheet material 7 is processed based on the processing speed when the processing of the sheet material 7 proceeds and the turning angle of the processing roller 29.
Feed speed, ultrasonic processing unit 26 (tool horn 28
Further, the moving speed of the processing roller 29) and the rotation speed of the processing roller 29 are set.

Here, the processing speed is v, the turning angle of the processing roller 29 is θ, the feed speed of the sheet material 7 is J6v, and the ultrasonic processing unit 26 (the tool horn 28 and the processing roller 2).
The moving speed of 9) is J5v, and the rotation speed of the processing roller 36 is J1v. In this case, it is assumed that the processing speed v and the turning angle θ are given from the personal computer 79 to the controller 61.

Then, the feeding speed J6v of the sheet material 7,
The moving speed J5v of the ultrasonic processing unit 26 and the rotational speed J1v of the processing roller 29 are represented by the following equations. The outer diameter of the processing roller 29 is D1, and the distance between the point on the upper end surface 28b of the tool horn 28 that contacts the processing roller 29 (that is, the processing point) and the axis C of the tool horn 28 is Let it be R.

J6v = v × cos θ (1) J1v = v / D1 × π (2) J5v = v × sin θ (3) Then, when the machining speed v and the turning angle θ are commanded from outside, By executing the calculations of the above equations (1) to (3), the feed speed J6v of the sheet material 7, the moving speed J5v of the ultrasonic processing unit 26, and the processing roller 29
Is calculated. Then, the controller 6
1 energizes and drives the processing roller turning motor 49 to turn the processing roller 29 to the commanded turning angle θ.

Thereafter, the controller 61 controls the roller drive motor 11 so that the feed speed J6v of the sheet material 7, the moving speed J5v of the ultrasonic processing unit 26, and the rotational speed J1v of the processing roller 29 are calculated as described above. , 2
0, the processing unit feed motor 42 and the processing roller rotation motor 55 are energized and driven. And the ultrasonic welding and fusing device 1
When the operation is controlled as described above, a processing curve (that is, a processing locus) P1 as shown in FIG. 10, for example, is formed in the sheet material 7 as a processing shape. In this case, if the processing is, for example, fusing, the processing curve P1 becomes a fusing curve (that is, a fusing locus), and if the processing is welding, the processing curve P1 becomes a welding curve (that is, a fusing locus).

In the operation control described above, the machining speed v and the turning angle θ are instructed from the personal computer 79 to the controller 61. Instead, the machining is performed from the personal computer 79 to the controller 61. It is also preferable to configure so as to instruct the shape (that is, the processing locus). In the case of this configuration, the controller 61 calculates and sets the processing speed v and the turning angle θ based on the commanded processing shape by calculation or the like. Then, the controller 61 determines the feed speed J6v of the sheet material 7, the moving speed J5v of the ultrasonic processing unit 26, and the rotational speed J of the processing roller 29 based on the obtained processing speed v and the turning angle θ.
1v may be obtained by calculation and set.

Here, as a method of instructing the controller 61 from the personal computer 79 about the processing shape (that is, the processing locus), for example, processing data (for example, an expression expressing the processing locus or a vector expressing the processing locus) for specifying the processing shape is used. The data may be transmitted to the controller 61. Then, the processing data is stored in the personal computer 7.
It is preferable to appropriately prepare in step 9.

Next, when various processing shapes are instructed, the processing speed v, the turning angle θ, the feed speed J6v of the sheet material 7, the moving speed J5v of the ultrasonic processing unit 26, the processing roller 29 Rotation speed J
An example of a specific control for obtaining 1v will be described.

First, example 1 shown in FIG. 11 is an example in which a processing straight line composed of a straight line having an angle θ1 with respect to the feed direction of the sheet material 7 is obtained as a processing shape. In this case, the feeding speed J6v of the sheet material 7 is set to ω (mm / sec).
c) and the time is t (sec). Then, the controller 61 is configured to obtain the above-mentioned speeds and the turning angle θ of the processing roller 29 by the following equations. still,
The moving position of the processing roller 29 is set to J3.

J3 = ω × t × tan θ1 J3v = ω × tan θ1 J6v = ω

(Equation 1) J1v = v / D1 / π Accordingly, the rotation speed J1v of the processing roller 29 is expressed as follows.

[0056]

(Equation 2) θ = arctan (J3v / ω) × 360/2 / π The unit of J3 is (mm), the unit of J3v is (mm / sec), and the unit of J6v is (mm / sec).
c) The unit of v is (mm / sec), the unit of J2v is (1 / sec), and the unit of θ is degrees.

In Example 2 shown in FIG. 12, for example,

(Equation 3) This is an example of obtaining a processing curve represented by. In this case, the x (ωt) axis is a direction along the feeding direction of the sheet material 7, and the y axis is a direction orthogonal to the feeding direction of the sheet material 7. A is the amplitude (mm) of the processing curve, and λ is the cycle (mm) of the processing curve. Further, the feeding speed J6v of the sheet material 7 is ω (mm / sec), and the time is t (sec). In this case, the controller 61 is configured to obtain the above-described speeds and the turning angle θ of the processing roller 29 by the following equations. The unit is the same as in Example 1.

[0058]

(Equation 4)

(Equation 5) J6v = ω

(Equation 6) J1v = v / D1 / π Accordingly, the rotation speed J1v of the processing roller 29 is expressed as follows.

[0059]

(Equation 7) θ = arctan (J3v / ω) × 360/2 / π Further, with respect to other processing shapes, the controller 61 performs the processing speed v, the turning angle θ, and the sheet material in substantially the same manner as in Example 1 or Example 2. 7, the moving speed J5v of the ultrasonic processing unit 26, the processing roller 29
Can be obtained by calculating the rotation speed J1v. Note that it is also preferable that these calculations are executed by the personal computer 79 and the calculation results are transmitted to the controller 61.

Further, the control contents of the controller 61 when welding or fusing the sheet material 7 by the other ultrasonic processing unit 27 are the same as the control contents of the ultrasonic processing unit 26 described above.

Then, the two ultrasonic processing units 2
By performing the machining operation of the workpieces 6 and 27, it is possible to machine a circular or elliptical machining shape as shown in FIG. In this case, one of the ultrasonic processing units 26 processes, for example, the upper semicircular portion 80a in FIG. 9 of the circular processing shape 80 shown in FIG. The lower half circle portion 80b of the processing shape 80 is processed. During this processing operation, the circular processing shape 80 can be processed simply by feeding the sheet material 7 in one direction, and the processing shape 80 can be repeatedly and continuously processed.

Here, two ultrasonic processing units 26,
27 is only movable in the direction orthogonal to the feeding direction of the sheet material 7, but cannot change the distance between the two along the feeding direction of the sheet material 7. Therefore, when the circular processing shape 80 is repeatedly processed continuously, the pitch 1 (see FIG. 9) of two continuous processing shapes 80 is fixed.

Therefore, in this embodiment, the pitch adjusting roller 11 is provided so as to be movable in the vertical direction, and when it is desired to increase the pitch l, the pitch adjusting roller 11 is moved downward to reduce the pitch l. Is configured to move the pitch adjusting roller 11 upward. In this case, the movement of the pitch adjustment roller 11 in the vertical direction is
The control is performed by controlling the power supply of the pitch adjusting roller feed motor 19.

Here, the contents of the control for obtaining the vertical position of the pitch adjusting roller 11 with respect to the pitch l to be set will be described with reference to FIG. First, as shown in FIG. 8, the distance between the roller 10 and the pitch adjusting roller 11 and the distance between the roller 12 and the pitch adjusting roller 11 are w, and the diameters of the rollers 10, 11, and 12 are d and I do. The distance between the processing roller 29 and the roller 10 of one ultrasonic processing unit 26 and the distance between the processing roller 29 and the roller 12 of the other ultrasonic processing unit 27 are mp, and The moving amount (moving amount downward from the upper limit position (origin)) is x. At this time,
The pitch l is defined by the following equation.

[0065]

(Equation 8) The controller 61 calculates the movement amount x of the pitch adjustment roller 11 from the above equation and the given pitch l, and is configured to control the movement of the pitch adjustment roller 11 by the calculated movement amount x. . Note that the movement amount x
May be configured to be executed by the personal computer 79. This makes it possible to set a desired pitch l.

According to the ultrasonic welding and fusing apparatus 1 of this embodiment, in addition to the circular processing shape 80 shown in FIG.
The processing shape 81 shown in FIG. 14, the processing shape 82 shown in FIG.
5, a processing shape 84 shown in FIG. 16, a processing shape combining these processing shapes, and a further processing shape.
It is possible to process a processing shape composed of two straight lines or curves obtained by translating oblique straight lines or curves.

According to the present embodiment having such a configuration, the processing roller 29 and the tool horn 28 of the two ultrasonic processing units 26 and 27 are moved in the feeding direction of the sheet material 7 while the sheet material 7 is fed out by the controller 61. It is configured to reciprocate in the direction intersecting with. In the case of this configuration, the processing speed of the sheet material 7 is adjusted by variously adjusting the feed speed J6v of the sheet material 7, the moving speed J5v of the ultrasonic processing units 26 and 27, and the moving direction thereof. It is possible to easily obtain a processing straight line that is oblique to the feed direction and a curved processing curve desired by the user.

In the above embodiment, the processing roller 29
Is rotatable around the axis C of the tool horn 28, so that when the processing roller 29 and the tool horn 28 are moved while feeding the sheet material 7, no wrinkles or the like are generated in the sheet material 7. Processing roller 29
Can be turned. Thereby, the sheet material 7
Processing quality can be improved.

In particular, in the above embodiment, since two ultrasonic processing units 26 and 27 are provided, two parallel processing straight lines in a diagonal direction and a processing shape such as a circular or elliptical shape are formed. When trying to obtain a curve (see FIG. 9, FIG. 13 to FIG. 16), each of the above-mentioned processed shapes can be obtained without reversely feeding the sheet material 7. Thereby, since the positioning of the sheet material 7 becomes accurate, the processing quality and processing accuracy of the sheet material 7 can be improved.

Further, in the above embodiment, the pitch adjusting roller 11 for adjusting the length of the portion of the sheet material 7 located between the two ultrasonic processing units 26 and 27, ie, the pitch l (see FIG. 9). It was configured to have: Thus, by moving the pitch adjusting roller 11 in the vertical direction, the length of the pitch 1 can be adjusted, and the usability is further improved.

The pitch adjusting roller 11 and a mechanism for moving the pitch adjusting roller 11 in the vertical direction may be provided as needed. That is, when it is not necessary to change the length of the pitch l, the pitch adjusting roller 11 and a mechanism for moving the pitch adjusting roller 11 in the vertical direction can be omitted.

In the above embodiment, the pitch l was adjusted by moving the pitch adjusting roller 11 in the up-down direction.
At least one of the two ultrasonic processing units 2 and 6 is configured to be movable in the feeding direction of the sheet material 7.
The pitch l may be adjusted by changing the distance between 6 and 27. In this case, a mechanism for moving at least one of the ultrasonic processing units 26 and 27 in the feeding direction of the sheet material 7 constitutes a pitch adjustment unit moving unit of the present invention.

Further, in the above embodiment, the tool horn 28 and the processing roller 29 are configured to be moved and driven in conjunction with one feed motor 42. Instead, the tool horn and the processing roller are respectively It may be configured to be driven to move by an independent feed motor, that is, to be driven independently. Furthermore, in the above-described embodiment, the feed speed of the sheet material 7 is obtained from the control data when the controller 61 controls the drive of the roller drive motors 15 and 20. However, the present invention is not limited to this. A detection sensor for detecting the feed speed of the material 7 may be provided, and the feed speed of the sheet material 7 may be determined based on the detection output from the detection sensor.

In the above embodiment, the sheet material 7 is fed by the two roller drive motors 15 and 20, but the left and right rollers 9 and 14 are driven by one roller drive motor via the belt transmission mechanism. Alternatively, the sheet material 7 may be fed by being driven. In the case of this configuration, in order to apply an appropriate tension to the sheet material 7,
It is preferable to provide a tension applying mechanism. Further, in the above embodiment, the rollers 8, 9, 13, 14 and the roller driving motors 15, 20 for executing the feeding operation of the sheet material 7 are provided.
Is provided in the ultrasonic welding and fusing device 1, but the present invention is not limited to this. A feed drive unit (feed motor and drive roller) for executing the feed operation of the sheet material 7 is provided on the sheet material supply device 22 side. A sheet material discharge device may be provided on the discharge side of the sheet material 7 in the ultrasonic welding and fusing device 1, and a feed drive unit for executing a sheet material feed operation may be provided in the sheet material discharge device. It may be configured as follows.

On the other hand, in the above embodiment, the tool horns 28 of the ultrasonic processing units 26 and 27 are configured not to rotate, but instead of this, the tool horn 2 is driven by a motor.
8 may be configured to rotate in accordance with the rotation of the processing roller 29. In this case, it is preferable that the ultrasonic vibrator 30 be rotated together with the tool horn 28. Thereby, the wear resistance of the tool horn and the processing roller is improved. In particular, when the sheet material 7 is a sheet made of glass fiber, the life of the tool horn and the processing roller is prolonged.

In the above embodiment, the two ultrasonic processing units 26 and 27 are arranged so as to be arranged along the sheet material 7 feeding direction. May be arranged along a direction orthogonal to the feeding direction of the sheet material 7. Further, in the above embodiment, two ultrasonic processing units 26 and 27 are provided, but the present invention is not limited to this, and three or more ultrasonic processing units may be provided.

[0077]

As is apparent from the above description, the present invention provides a plurality of ultrasonic processing units for feeding a sheet material between a tool horn and a processing roller and welding or fusing the sheet material. A plurality of unit movement driving means for moving the ultrasonic processing unit in a direction intersecting with the feeding direction of the sheet material; a plurality of roller rotation driving means for rotating the plurality of processing rollers; and a plurality of roller rotations for rotating the plurality of processing rollers. Since the drive means and the driving means are provided, it is possible to obtain a desired processing shape, and it is possible to eliminate the need to reversely feed the sheet material, thereby achieving an excellent effect of improving the processing accuracy.

[Brief description of the drawings]

FIG. 1 is a front view of an ultrasonic welding and fusing apparatus showing one embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view of the ultrasonic welding and fusing apparatus taken along the line II-II in FIG.

FIG. 3 is a side view of the ultrasonic welding and fusing apparatus.

FIG. 4 is a top view of the ultrasonic welding and fusing apparatus.

FIG. 5 is a block diagram.

FIG. 6 is a schematic side view of the ultrasonic fusing device and the sheet material supply device.

FIG. 7 is a schematic top view of an ultrasonic welding and fusing apparatus and a sheet material supply apparatus.

FIG. 8 is a schematic side view for explaining the operation of the pitch adjusting roller.

FIG. 9 is a partial perspective view of a sheet material.

FIG. 10 is a view for explaining a processing operation of the ultrasonic welding and fusing apparatus.

FIG. 11 is a diagram showing an example 1 of a processing shape;

FIG. 12 is a diagram showing an example 2 of a processing shape;

FIG. 13 is a diagram showing another example of a processing shape.

FIG. 14 is a diagram showing another example of a processing shape.

FIG. 15 is a diagram showing another example of a processing shape.

FIG. 16 is a diagram showing another example of a processing shape.

[Explanation of symbols]

1 is an ultrasonic welding and fusing device, 2 is a main body frame, 3 is a left side plate, 4 is a right side plate, 7 is a sheet material, 8, 9, 10 are rollers, 11 is a pitch adjusting roller (sheet pitch adjusting means), 12, 13 and 14 are rollers, 15 is a roller drive motor (sheet feeding means), 23a and 24a are nonwoven fabrics (sheet material), 26 and 27 are ultrasonic processing units, 28 is a tool horn, 29 is a processing roller, and 30 is an ultrasonic Vibrator,
42 is a processing unit feed motor (unit movement driving means), 48 is a turning shaft, 49 is a processing roller turning motor (roller turning driving means), 52 is an elevating cylinder, 55 is a processing roller rotation motor (roller rotation driving means), 61 Denotes a controller (control means), and 79 denotes a personal computer.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B29C 65/08 B26F 3/00 D06H 5/00-7/24

Claims (5)

(57) [Claims] 1. A plurality of ultrasonic processing units having a tool horn and a processing roller to which ultrasonic waves are transmitted, feeding a sheet material between the tool horn and the processing roller, and welding or fusing the sheet material. A plurality of unit movement driving means for moving the plurality of ultrasonic processing units in a direction intersecting with the feeding direction of the sheet material; a plurality of roller rotation driving means for rotating the plurality of processing rollers; and the plurality of processing rollers. Ultrasonic welding and fusing apparatus comprising: a plurality of roller turning drive means for turning the roller. 2. The ultrasonic welding and fusing apparatus according to claim 1, wherein the plurality of ultrasonic processing units are arranged side by side along a feeding direction of the sheet material. 3. A sheet pitch adjusting means for adjusting a length of a portion of the sheet material located between the plurality of ultrasonic processing units.
The ultrasonic welding and fusing apparatus as described in the above. 4. The sheet pitch adjusting means is provided so as to be located between the plurality of ultrasonic processing units on the upper surface side or the lower surface side of the sheet material, and moves in a direction intersecting the sheet surface of the sheet material. The ultrasonic welding and fusing apparatus according to claim 3, further comprising a pitch adjusting roller provided so as to be capable of being provided. 5. The ultrasonic welding according to claim 3, wherein said sheet pitch adjusting means comprises a pitch adjusting unit moving means for moving said ultrasonic processing unit in a feeding direction of said sheet material. Fusing device.