JPH06297608A - Ultrasonic fusing apparatus in bag-manufacturing machine - Google Patents

Abstract

PURPOSE:To provide an ultrasonic fusing apparatus in a bag-manufacturing machine which can cope with the case where a fusing line is a curved line and has a small output of an ultrasonic horn and is inexpensive and can be in miniaturized. CONSTITUTION:The apparatus is an ultrasonic fusing apparatus wherein a processing roll 61 with curved welding blade 70 and fusing blade 71 and an ultrasonic oscillator 63 are provided and welding and fusing are performed by pinching synthetic resin films 3, 4 and 5 between the processing roll 61 and the ultrasonic horn 62. A guide roll 65 rotating by synchronizing the processing roll 61 and having a guide part 64 corresponding to the welding blade 70 is provided on a base stage and a sliding stage 66 on which an ultrasonic oscillator 63 is mounted is slidably provided on a base stage 10 and a connecting part 67 guiding the ultrasonic horn 62 to a position facing the welding blade 70 and a fusing blade 71 is provided between the sliding stage 66 and the guiding part 64.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic fusing device in a bag-making machine for producing a bag by fusing superposed synthetic resin films.

[0002]

2. Description of the Related Art In a conventional bag making machine using an ultrasonic fusing device, a synthetic resin film is placed on a conveying section, and a synthetic resin film is placed between a processing roll and an ultrasonic horn. Insert the film. Then, welding blades and fusing blades that follow the welding line are formed on the outer peripheral portion of the processing roll, ultrasonic waves are output from the ultrasonic horn while moving the synthetic resin film, and the synthetic resin film is welded. ing.

[0003]

The above-mentioned processing roll is
Since the welding blade and the fusing blade are formed on the outer peripheral portion so as to follow the welding line, when the welding line is a curve, the width of the processing roll increases corresponding to the height of the welding line. Therefore, the ultrasonic horn also becomes large corresponding to the width of the processing roll, and it is necessary to increase the output of the ultrasonic horn accordingly, and not only the apparatus becomes large, but also the manufacturing cost becomes extremely expensive. There is a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to cope with the case where the welding line is a curve, the output of the ultrasonic horn is small, and the manufacturing cost is low and the size can be reduced. An object is to provide an ultrasonic fusing device in a bag machine.

[0005]

The present invention is provided with a processing roll rotatably provided on a base having a curved welding blade and a fusing blade, and an ultrasonic oscillator having an ultrasonic horn,
An ultrasonic fusing device in a bag-making machine for sandwiching and fusing synthetic resin films laminated between these processing rolls and an ultrasonic horn, wherein the base is synchronized with the processing rolls. Provided with a guide roll having a guide portion corresponding to the curved welding blade and the fusing blade, and the sliding base having the ultrasonic oscillator attached to the base is slidably provided, and the sliding base is provided. And a guide part of the guide roll, a connecting part for guiding the ultrasonic horn of the ultrasonic oscillator to a position facing the welding blade and the fusing blade of the processing roll is provided.

[0006]

According to the present invention, according to the rotation of the processing roll,
The slide base is guided by the guide portion of the guide roll through the connecting portion and slides, and guides the ultrasonic horn of the ultrasonic oscillator to a position facing the welding blade and the fusing blade of the processing roll.
Since the ultrasonic horn always faces the welding blade and the fusing blade, the size may be any size according to the welding blade and the fusing blade, and the output of the ultrasonic horn is increased or the size is increased. No need.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. First, the bag 1 to be manufactured is hung through a hanging hand of the hanger in order to protect the suit or outer garment hung on the hanger from dust and the like, and as shown in FIGS. The synthetic resin film 5 is superposed on the back surfaces of the synthetic resin films 3 and 4 which are welded and connected, and the longer side is welded to the welding lines 6a and 6b.
Along the welding lines 6c and 6d and the cutting lines 7a, 7b and 7 outside the welding portions.
It is cut along c and 7d. Of these, the welding line 6d corresponding to the shoulder portion has a curved shape, and the opening 8 is formed in the central portion.

Next, referring to FIGS. 3 and 4, the base 10
Has a L-shaped configuration in which frame members are connected to each other, and the first transport unit 11 is provided in the long portion, and the second transport unit 40 is provided in a portion orthogonal to the first transport unit 11. And each transport unit 1
The intersecting portion of 1 and 40 serves as a stop portion 12 that temporarily stops the bag 1. The 1st conveyance part 11 is comprised from the continuous feeding part 13 provided in the starting end part, and the intermittent feeding part 14 provided in the terminal part. Film feeding units 3A, 4 are provided with rollers 3b, 4b, 5b on both sides of the starting end of the continuous feeding unit 13 to feed the films 3, 4, 5 respectively.
A and 5A are provided, and a zipper supply section 2A for supplying the zipper 2 obliquely upward and a zipper welding section 15 are provided in the center. These films 3, 4 and 5 are drawn out by a plurality of rollers 17 driven by a drive motor 16 and are changed in direction by a bending plate 18 which is obliquely attached to be conveyed to the first conveying section 11. .

The first welding portions 30 are provided at both ends of the continuous feeding portion 13. This is, as shown in FIG. 8, an ultrasonic oscillator 32 having ultrasonic horns 31 facing each other with the films 3, 4, 5 interposed therebetween, and a rotatable processing roll 33.
And a flat welding blade 34 corresponding to the welding line 6a or 6b of the bag 1 and a sharp welding blade 35 corresponding to the cutting line 7a or 7b. There is. The roller 36 constitutes a gusset portion for forming a folded portion on the film.

The intermittent feeding section 14 includes a plurality of rollers 19
A cutting section 20 for cutting the semi-finished product of the bag 1 along the cutting line 1a (see FIG. 10) at the terminal end thereof by repeating the carrying period and the stopping period in order to form a hole or an opening in the bag 1. Is provided.

The second transfer section 40 moves the semi-finished product of the bag 1 transferred to the stop section 12 by the first transfer section 11 in the orthogonal direction as it is. It is composed of a plurality of belt devices 41 arranged at intervals in the orthogonal direction. This belt device 41
As shown in FIG. 9, a timing belt 44 is applied to two pulleys 42 and 43, and are arranged vertically facing each other. The upper belt device 41 is configured to be movable up and down, and when it is lowered, the films 3, 4, and 5 are sandwiched and moved.

The hem welding portion 50 as the second welding portion is
It is provided at a side end portion (left side in FIG. 3) of the second transport unit 40. This has the same structure as the first welding part 30, and is composed of an ultrasonic oscillator 32 having ultrasonic horns 31 facing each other with the films 3, 4, 5 interposed therebetween, and a rotatable processing roll 33. On the outer periphery of the processing roll 33,
A flat welding blade 34 corresponding to the welding line 6c, and a cutting line 7c
A sharp fusing blade 35 corresponding to is projected.

The shoulder weld portion 60 as the second weld portion is
It is provided at a side end portion (right side in FIG. 3) of the second transport unit 40. As shown in FIG. 1 and FIG.
The processing roll 61 rotatably provided at 0, the ultrasonic oscillator 63 having the ultrasonic horn 62, the guide roll 65 having the guide groove 64 as a guide portion, and the base 10 slidably provided. Sliding base 66 and a connecting roller 67 as a connecting part that connects the sliding base 66 and the guide groove 64.
It consists of and.

The processing roll 61 is mounted concentrically with a guide roll 65 which is rotationally driven by a motor 68,
The rotation of the guide roll 65 is transmitted via the transmission mechanism 69 to rotate. Further, on the outer peripheral surface of the processing roll 61, a flat curved welding blade 70 corresponding to the welding line 6d of the bag 1 and a sharp welding blade 71 corresponding to the cutting line 7d.
Is projected. The ultrasonic oscillator 63 is attached to the slide base 66, and the ultrasonic horn 62 is attached to the film 3, 4, 4.
5, the welding blade 70 and the welding blade 71 of the processing roll 61
Is facing.

The guide roll 65 is rotationally driven by the motor 68 as described above, and the guide groove 64 provided on the outer peripheral surface thereof has a curve corresponding to the welding blade 70 of the processing roll 61. A sliding groove 72 is formed in the sliding base 66, and this is fitted into the rail portion 73 of the base 10 and slid in a direction orthogonal to the moving direction of the films 3, 4, and 5. The connecting roller 67 as a connecting portion,
The base portion is attached to the slide base 66, and the roller portion is fitted in the guide groove 64.

The hem welding portion 50 may be cut by the rotary cutter 74 by welding only the welding blade 34 on the processing roll 33 to perform welding.

Further, although not shown, the second transfer section 4
At 0, a sensor for detecting the feeding position of the bag 1 and an encoder for controlling the output of the ultrasonic oscillator 63 according to the position of the bag 1 are provided. The ultrasonic oscillator 63 is adapted to transmit only when the films 3, 4, 5 are located below the second welded portion 60. It should be noted that the ultrasonic wave transmitter 3 is also provided in the first welding unit 30 provided in the first transport unit 11.
2 is provided, the ultrasonic transmitter 32 is adapted to constantly transmit.

Next, the operation of the above configuration will be described.
When the drive motor 16 of the first transport unit 11 is driven, the films 3 and 4 are pulled out from the film supply units 3A and 4A by the plurality of rollers 17, and the direction is changed by the bending plate 18 that is obliquely attached. And is conveyed to the continuous feeding unit 13 so that the edges contact each other at the center. At the same time, zipper 2
Is supplied diagonally upward from the zipper supply portion 2A to the central portion. Then, the zipper 2 is welded by the films 3 and 4 by the zipper welding portion 15 when it is united with the films 3 and 4. Next, like the films 3 and 4, the film 5 is pulled out from the film supply section 5A, and the direction is changed by the bending plate 18 attached obliquely, and the zipper 2
Are stacked below the films 3 and 4 connected by.

The films 3, 4, and 5 are ultrasonic horns 31.
And the welding blade 34 and the welding blade 35 of the processing roll 33, and the welding lines 6a, 6 are moved according to the movement of the films 3, 4, 5.
and the cutting line 7a on the outside of the welding line 7a,
Cut along 7b. The films 3, 4, and 5 are further conveyed, passed through the intermittent feeding section 14, and cut by the cutting section 20 along the cutting line 1a shown in FIG. 10, and the semi-finished product of the bag 1 is sent to the stop section 12.

When the sensor senses that the semi-finished product of the bag 1 has been sent to the stop 12, the second conveyor 40 is actuated and the upper belt device 41 descends to clamp the semi-finished product of the bag 1.
The semi-finished product of the bag 1 is moved in the direction of arrow E shown in FIG.
When the lower end (the lower side shown in FIG. 10) of the semi-finished product of the bag 1 reaches below the hem welding portion 50, an encoder (not shown) is activated to output the ultrasonic oscillator 32. The semi-finished product of the bag 1 is sandwiched between the ultrasonic horn 31 and the welding blade 34 and the fusing blade 35 of the processing roll 33, and is welded along the welding line 6c in accordance with the movement of the semi-finished product of the bag 1 and the outer cutting thereof. Line 7c
Is cut along.

On the other hand, when the upper end (upper side shown in FIG. 10) of the semi-finished product of the bag 1 reaches below the shoulder welded portion 60, an encoder (not shown) is activated to output the ultrasonic oscillator 63.
By the way, the guide roll 65 also rotates according to the rotation of the processing roll 61, and the slide base 66 moves along the curve of the guide groove 64 via the guide groove 64 and the connecting roller 67.
Therefore, the ultrasonic horn 62 also moves following the guide groove 64, and always moves to a position facing the welding blade 70 and the welding blade 71 of the processing roll 61. That is, welding is performed as shown in FIG.
Starting from the point, the ultrasonic horn 62 moves to a position facing the welding blade 70 and the welding blade 71 along the welding line 6d and welds, and cuts along the cutting line 7d. And B
When reaching the point, the cutting line intersects with the upper edge and the upper right corner in the drawing is cut off.

When the semi-finished product of the bag 1 reaches the point B, an encoder (not shown) operates and the output of the ultrasonic oscillator 63 is stopped. The semi-finished product of the bag 1 continues to move, but the output stop of the ultrasonic oscillator 63 continues until the semi-finished product of the bag 1 reaches point C. When the semi-finished product of the bag 1 reaches the point C, the ultrasonic oscillator 63 is output again, welding and cutting from the points C to D are performed, and the bag 1 shown in FIG. 3 is formed. It should be noted that due to the stop of the output of the ultrasonic oscillator 63, welding from the point B to the point C is not performed, and the opening 8 is formed here.

As shown in FIG. 11, the shoulder portion is formed by cutting a semi-finished product of the bag 1 in advance with a cutting portion 20 into a large size, and forming the shoulder portion into a welding line 6d and a cutting line 7d. It may be welded / fused along and then cut along the cutting line 7e by a rotary cutter (not shown).

According to the above embodiment, the following effects can be obtained. 1. Guide roll 6 rotating in synchronization with processing roll 61
5, the ultrasonic horn 62 attached to the slide base 66 through the guide groove 64 and the connecting roller 67 is always attached to the welding blade 70.
Also, since it moves to a position facing the fusing blade 71, it is possible to deal with special processing in which the welding line is curved. 2. The ultrasonic horn 62 is always provided with the welding blade 70 and the welding blade 7.
Since it is opposed to No. 1, its size may correspond to the welding blade 70 and the welding blade 71, and the ultrasonic output should be remarkably reduced as compared with the conventional case which had to correspond to the entire guide roll 65. Therefore, the device can be downsized and the cost can be reduced.

The present invention is not limited only to the embodiments described above and shown in the drawings. For example, a synthetic resin film may be replaced by a heat-melting nonwoven fabric or a heat-melting film. It may be applied, and various modifications can be made without departing from the gist.

[0026]

The present invention is provided with a processing roll rotatably provided on a base and having curved welding blades and fusing blades, and an ultrasonic oscillator having an ultrasonic horn. The processing roll and the ultrasonic horn are provided. An ultrasonic fusing device in a bag-making machine for sandwiching and fusing synthetic resin films that are overlapped with and, and rotating in synchronization with the processing roll on the base and the curved shape. A guide roll having a welding portion and a guide portion corresponding to the fusing blade is provided, and a slide table having the ultrasonic oscillator attached thereto is slidably provided on the base table, and the guide section of the slide table and the guide roll is provided. Since a connecting portion for guiding the ultrasonic horn of the ultrasonic oscillator to a position facing the welding blade and the fusing blade of the processing roll is provided between and, even when the welding line is a curve, The output of the sonic horn is small, inexpensive and In which excellent effects of being able to reduce the size of the apparatus.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an ultrasonic fusing device in a bag making machine according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view showing the configuration of the entire bag making machine.

FIG. 4 is a schematic view showing an arrangement of mechanical parts.

FIG. 5 is a front view of the bag.

6 is a cross-sectional view taken along line VI-VI in FIG.

FIG. 7 is a side view seen from the direction V-V in FIG.

FIG. 8 is a front view of a first welding portion.

FIG. 9 is a front view of the belt device of the second transport unit.

FIG. 10 is a front view showing the process of manufacturing the bag.

FIG. 11 is a front view showing another embodiment of the process of manufacturing the bag.

[Explanation of symbols]

 1 bag 3 synthetic resin film 4 synthetic resin film 5 synthetic resin film 6a welding line 6b welding line 6c welding line 6d welding line 7a cutting line 7b cutting line 7c cutting line 7d cutting line 7e cutting line 10 bases 60 Shoulder welding part (second welding part) 61 Processing roll 62 Ultrasonic horn 63 Ultrasonic oscillator 64 Guide groove (guide part) 65 Guide roll 66 Sliding table 67 Connecting roller (connecting part) 70 Welding blade 71 Welding blade

Claims (1)

[Claims] 1. A processing roll, which is rotatably provided on a base and has a curved welding blade and a fusing blade, and an ultrasonic oscillator having an ultrasonic horn, and is provided between the processing roll and the ultrasonic horn. An ultrasonic fusing device in a bag-making machine for sandwiching, fusing, and fusing synthetic resin films that are superposed, wherein the curved welding blade and fusing are performed on the base, rotating in synchronization with the processing rolls. A guide roll having a guide portion corresponding to the blade is provided, and a sliding base having the ultrasonic oscillator attached thereto is slidably provided on the base, and between the sliding base and the guide portion of the guide roll. An ultrasonic fusing device in a bag making machine, comprising a connecting portion for guiding an ultrasonic horn of the ultrasonic oscillator to a position facing the welding blade and the fusing blade of the processing roll.