JP2019155867A - Soft container manufacturing apparatus - Google Patents

Abstract

To provide a manufacturing apparatus of a soft container, capable of stacking a peripheral side part of a tip member of the soft container and a tip of a soft trunk part easily and joining these without a gap.SOLUTION: In a soft container manufacturing apparatus 60, a tip of a core 61 is covered with a tip member 20 of a soft container 1, and the core 61 continuing with the tip is covered with an outer circumference of a trunk 10. In the outer circumference of a core part 65 of a tip vicinity of the core 61, a peripheral side part 21 of the tip member 20 and a tip of the trunk 10 are stacked together. With core driving means 69, the diameter of the core part 65 is enlarged. Welding energy is supplied onto the outer circumference of the core part 65 from a welding head 63.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for manufacturing a soft container, and more particularly to an apparatus for manufacturing a soft container that joins a flexible body portion and a tip member of the soft container.

  In general, this type of flexible container has a flexible body and a tip member made of an injection-molded product of hard resin (see Patent Documents 1 to 3, etc.). The trunk | drum of patent document 1 has become the cylinder shape which rounded the resin sheet. A circular lid-like tip member is provided at the tip of the body portion. The distal end members in the soft containers of Patent Documents 2 and 3 integrally have a tapered shoulder and a cylindrical mouth and neck. The proximal end portion of the shoulder portion is joined to the distal end portion of the trunk portion.

Japanese Patent No. 5713649 JP2013-233982A JP 2011-195144 A

The inventor has proposed that the cylindrical peripheral side portion is extended from the proximal end portion of the shoulder portion of the tip member, and the front end portion of the body portion is overlapped and welded to the peripheral side portion. Specifically, the front end portion of the body portion is fitted and welded to the outer periphery of the peripheral side portion of the front end member. Thereby, the tip member and the body can be firmly joined.
On the other hand, when the circumferential side portion of the tip member and the tip portion of the body portion are overlapped, if there is a clearance between them, there is a possibility that a gap will be formed between the two after joining. If the clearance is eliminated, it is difficult to overlap the two.
In view of the circumstances described above, an object of the present invention is to provide an apparatus for manufacturing a flexible container that can easily overlap a peripheral side portion of a tip member and a tip portion of a trunk portion and can join the two without gap. To do.

In order to solve the above problems, the present invention is a soft container manufacturing apparatus that joins a peripheral side portion of a tip member to a tip portion of a flexible body portion of a soft container,
A core in which the tip member is covered at the tip, the barrel is covered on the outer periphery following the tip, and the peripheral side portion of the tip member and the tip of the barrel are overlapped on the outer periphery in the vicinity of the tip;
Core driving means for expanding the diameter of the core portion in the vicinity of the tip of the core during the joining;
And a welding head for supplying welding energy on the outer periphery of the core portion.

When covering the core with the tip member and the body, the core portion in the vicinity of the tip is not enlarged. Thereby, the tip member and the trunk can be easily put on the core. Preferably, by setting a clearance between the peripheral side portion of the tip member and the tip portion of the body portion, both can be easily overlapped.
After the covering, the core drive means expands the diameter of the core portion near the tip. For this reason, the said core part is pressed from the inner peripheral side by the overlap part of the peripheral side part of a front-end | tip member, and the front-end | tip part of a trunk | drum. Thereby, the clearance can be eliminated. That is, it is possible to prevent a gap from being formed between the peripheral side portion of the tip member and the tip portion of the trunk portion. In this state, welding energy is supplied from the welding head to an overlapping portion between the peripheral side portion of the tip member and the tip portion of the body portion on the outer periphery of the core portion. Thereby, the peripheral side part of the tip member and the tip part of the body part can be welded and joined without any gap.
Thereafter, the diameter of the core portion is reduced, and the soft container including the tip member and the body portion is removed from the core.
The welding head is preferably a high frequency welding head including a high frequency welding coil.

It is preferable that the core portion has a plurality of inner peripheral pressing members arranged separately in the circumferential direction, and the core driving means advances and retracts the plurality of inner peripheral pressing members in the radial direction of the core.
At the time of joining, the inner peripheral pressing member is advanced radially outward by the core driving means. As a result, the diameter of the core portion is increased, and the tip member and the body portion are firmly joined.
After the joining, the inner circumferential pressing member is retracted radially inward by the core driving means. As a result, the core portion is reduced in diameter, and the soft container can be removed from the core.
It is preferable that the core driving means advance and retract the plurality of inner circumferential pressing members in synchronization with each other.
The core drive means includes a drive shaft disposed on the axis of the core, a drive unit that slides the drive shaft between a forward position and a backward position along the axis, and the drive shaft and the inner periphery presser. A cam mechanism provided between the member and an inner periphery urging means for urging the inner periphery pressing member in a diameter reducing direction, and when the drive shaft is slid to the advance position, the cam mechanism When the inner circumferential pressing member is advanced radially outward and the drive shaft is slid to the retracted position, the inner circumferential pressing member is retracted radially inward by the inner circumferential biasing means. Is preferred.
As the cam mechanism, for example, a convex cam surface such as a taper taper is formed at the tip of the drive shaft, and a concave cam surface that abuts the taper portion is formed on the inner surface of the inner circumferential pressing member. It is preferable.

It is preferable that the soft container manufacturing apparatus further includes an outer periphery pressing member that surrounds an outer periphery of the core portion.
Thereby, the overlapping portion of the tip member and the body portion can be sandwiched between the core portion and the outer periphery pressing member. Therefore, it is possible to surely prevent a gap from being formed between the tip member and the body portion, and both can be firmly joined. Moreover, the dimensional accuracy can be increased by defining the outer diameter of the soft container by the outer periphery pressing member. In particular, it is possible to stabilize the diameter dimension of the overlapping portion between the tip member and the body portion.
The core portion may be surrounded by one annular outer periphery pressing member, and a plurality of outer periphery pressing members are arranged annularly around the core portion, so that the core portion is surrounded by the plurality of outer periphery pressing members. May be enclosed.
It is preferable that the plurality of outer periphery pressing members can advance and retract in the radial direction of the core portion.

It is preferable that a protrusion extending in the circumferential direction is formed on a surface (inner surface) facing the core portion of the outer periphery pressing member.
By causing the protrusion to cross the envelope pasting part or the palm-pasting part of the body part, one portion of the gap in the pasting part extending in the longitudinal direction of the envelope pasting part or the palm-pasting part is locally crushed, and further Can be sealed by welding. Thereby, it is possible to prevent the internal space of the soft container from communicating with the outside through the gap in the pasting portion. As a result, it is possible to prevent the contents from leaking out through the gap in the sticking portion and the outside air from entering the soft container through the gap in the sticking portion.
The protrusions may be provided at least on the inner surface of the outer periphery pressing member and on the portion facing the envelope pasting portion or the palm pasting portion and its peripheral portion.

  According to the present invention, the peripheral side portion of the distal end member of the soft container and the distal end portion of the trunk portion can be easily overlapped, and both can be joined without a gap.

FIG. 1 is a longitudinal sectional view of a high-frequency welding apparatus (soft container manufacturing apparatus) according to an embodiment of the present invention as seen from a vertical section including a section taken along line II in FIG. FIG. 2 is a plan sectional view of the high-frequency welding apparatus taken along line II-II in FIG. FIG. 3 is an enlarged cross-sectional view of a circle III in FIG. FIG. 4A is an explanatory sectional view showing the core of the high-frequency welding apparatus with the drive shaft in the forward position and exaggerating the diameter expansion degree of the top core. FIG. 4A is a cross-sectional view showing the core in a state where the drive shaft is in the retracted position. FIG. 5 (a) shows a state in which the envelope of the soft container in a state before the peripheral side portion of the distal end member of the soft container and the distal end portion of the body portion are overlapped and held between the inner and outer holding members of the high-frequency welding apparatus. It is sectional drawing which expands and shows a part. FIG. 5B is a cross-sectional view taken along the line Vb-Vb in FIG. FIG.5 (c) is an expanded sectional view which follows the Vc-Vc line | wire of FIG. FIG. 6 is a longitudinal sectional view of the soft container. FIG. 7 is a perspective view of the soft container having a body portion formed by attaching an envelope. FIG. 8 is a vertical cross-sectional view of the distal end portion of the soft container according to a modified embodiment in which the body portion is formed by gluing. FIG. 9 (a) shows the base portion of the joint portion of the trunk portion in a state before the peripheral side portion of the distal end member and the distal end portion of the trunk portion are overlapped with each other and clamped by the inner and outer pressing members. It is an expanded sectional view. FIG. 9B is an enlarged cross-sectional view taken along the line IXb-IXb in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<Soft envelope 1 with envelope>
6 and 7 show the soft container 1 in a state where the bottom is unsealed (opened) and the contents are not filled. The flexible container 1 includes a trunk portion 10, a tip member 20, and a discharge port member 30. After the contents are filled from the bottom opening portion (the lower end in FIG. 7) of the trunk portion 10, the bottom opening portion is sealed by heat sealing. The content is, for example, a fluid or viscous material such as an adhesive, a paint, or a beverage.

  The body portion 10 is obtained by, for example, rolling a single sheet 19 into a cylindrical shape and pasting both end portions 19e and 19f of the sheet 19 on an envelope. An envelope pasting portion 10 d is formed at one place in the circumferential direction of the body portion 10. The envelope pasting part 10d extends linearly over the entire length of the body part 10 in the longitudinal direction.

  Although not shown in detail, the sheet 19 is a laminate sheet including a resin layer such as polyethylene and a metal barrier layer such as aluminum. Preferably, the trunk portion 10 has a taper shape with a diameter that decreases very gradually from the bottom portion toward the tip (upper end in FIG. 7). The taper angle of the body portion 10 is preferably about 0.1 ° to 0.5 °, more preferably about 0.3 ° with respect to the axis L1 of the soft container 1.

  A distal end member 20 is provided at the distal end portion of the body portion 10. The distal end portion of the body portion 10 is closed by the distal end member 20. The tip member 20 is formed by drawing a laminate sheet including a resin layer such as polyethylene and a metal barrier layer such as aluminum. The metal barrier layer of the tip member 20 is thicker than the metal barrier layer of the trunk portion 10. For this reason, the tip member 20 is harder than the trunk portion 10 and has a self-holding property.

  As shown in FIG. 6, the tip member 20 integrally includes a circumferential side portion 21, a shoulder portion 22, and a top portion 23. The peripheral side portion 21 has a substantially cylindrical shape, and preferably has a tapered shape whose diameter is reduced very gently toward the distal end side (the shoulder portion 22 side). More preferably, the taper angle of the peripheral side portion 21 is matched with the taper angle of the body portion 10.

A sharply tapered conical shoulder portion 22 is connected to the distal end portion of the peripheral side portion 21. The front end portion (center portion) of the shoulder portion 22 is closed by a top portion 23 having a dome shape or a partial spherical shape.
ing.
A cylindrical discharge port member 30 made of a hard resin such as polyethylene (PE) or polypropylene (PP) is provided on the outer surface of the tip member 20. The bottom of the internal passage of the discharge port member 30 is closed by the top 23 of the tip member 20. At the time of use, the contents (contained object) are discharged from the discharge port member 30 by making a hole in the top portion 23.

  The front end portion of the body portion 10 is overlapped with the outer peripheral surface of the peripheral side portion 21 of the front end member 20 so as to cover the front end member 20, and the front end member 20 and the body portion 10 are joined at the overlapping portion 1d.

<High-frequency welding apparatus 60>
As shown in FIG. 1, the tip member 20 and the trunk | drum 10 are joined by the high frequency welding apparatus 60 (joining apparatus part in a soft container manufacturing apparatus). The high frequency welding apparatus 60 includes a core 61, an outer periphery pressing member 62, and a welding head 63.

The core 61 includes a base core 64 has a top core 65 (core portion near the distal end), and extends vertically along the axis L _6. A top core 65 is disposed above the base core 64 via a pair of connecting plates 67. Each of the base core 64 and the top core 65 has a cylindrical shape, and its outer peripheral surface is tapered so that its diameter is slightly reduced upward in accordance with the taper angles of the body portion 10 and the peripheral side portion 21. It has become. The top end portion of the top core 65 has a conical shape matching the shoulder portion 22.

As shown in FIGS. 1 and 2, the top core 65 has a halved structure having two (plural) inner peripheral pressing members 66. These inner pressing member 66 is arranged separately in a circumferential direction so as to face each other across the axis line L _6. The material of the inner periphery pressing member 66 is a hard resin, and preferably polyetheretherketone (PEEK) from the viewpoint of heat resistance, insulation, and slipperiness.

As shown in FIG. 1, each inner periphery pressing member 66 and the base core 64 are connected via a connecting plate 67. The connecting plate 67 is made of a metal such as aluminum or steel and can be elastically deformed.
A rubber annular elastic member 68 is attached to the outer periphery of the top core 65. A groove 66d for accommodating the annular elastic member 68 is formed on the outer circumferential surface of each inner circumferential pressing member 66 so as to extend in the circumferential direction. Preferably, the annular elastic member 68 is accommodated in the groove 66d in a state where the diameter is slightly increased from the natural state and the tension is applied. Therefore, a radially inward force from the annular elastic member 68 is always applied to the inner circumferential pressing member 66. For example, as the annular elastic member 68, a general O-ring can be diverted as a sealing material.

A drive shaft 69 is disposed on the axis L ₆ of the core 61. The drive shaft 69 passes through the base core 64 and is inserted into the top core 65. The front end portion of the drive shaft 69 is a tapered portion 69e. The material of the drive shaft 69 is a hard resin, preferably PEEK.
A conical concave cam surface 65 e is formed on the inner peripheral surface of the top core 65. The cam surface 65e in each inner periphery pressing member 66 is a half conical concave surface. The taper portion 69e is in contact with the cam surface 65e.
The taper portion 69e and the cam surface 65e constitute a cam mechanism. In other words, cam mechanisms 69e and 65e are provided between the drive shaft 69 and the inner circumferential pressing member 66.

As shown in FIG. 4, the drive shaft 69 can be displaced so as to move up and down between an upper advance position and a lower retract position along the axis L <b> ₆ by an axis drive unit 71 such as an air cylinder.
As shown in FIG. 4A, when the drive shaft 69 is raised to the forward position, the inner circumferential pressing member 66 is pushed outward in the radial direction by the cam action of the tapered portion 69e and the cam surface 65e. Therefore, the top core 65 is expanded in diameter. Accordingly, the connecting plate 67 is elastically deformed so that the end of the connecting plate 67 on the top core 65 side is warped outward. The annular elastic member 68 is elastically deformed in the diameter expansion direction.
In FIG. 4A, the degree of diameter expansion of the top core 65 is exaggerated.

As shown in FIG. 4B, when the drive shaft 69 is lowered to the retracted position, the inner circumferential pressing member 66 is pushed radially inward by the elastic restoring force of the plate spring-like connecting plate 67 and the annular elastic member 68. Retracted to the original position. As a result, the diameter of the top core 65 is reduced to return to the original normal diameter.
The drive shaft 69, the shaft drive portion 71, the connecting plate 67, and the annular elastic member 68 constitute a core drive means. Further, the connecting plate 67 and the annular elastic member 68 constitute an inner peripheral urging means.

  As shown in FIGS. 1 and 2, three (plural) outer periphery pressing members 62 are provided on the outer side of the tip portion of the core 61. These outer periphery pressing members 62 have a partial cylindrical shape obtained by dividing the covered cylinder into three parts. Three outer periphery pressing members 62 surround the top core 65 from three directions. Each outer periphery pressing member 62 can be advanced and retracted in the radial direction by an outer periphery pressing drive unit 72 such as an air cylinder. Preferably, the three outer periphery pressing members 62 are advanced and retracted in synchronization with each other. The material of the outer periphery pressing member 62 is a hard resin, and preferably PEEK from the viewpoint of heat resistance, insulation, and slipperiness.

  As shown in FIG. 3, a protrusion 62d is formed on the inner side surface 62s (the surface facing the top core 65) of one outer periphery pressing member 62A among these outer periphery pressing members 62. As shown in FIG. 5B, the protrusion 62d extends in the circumferential direction of the inner side surface 62s. As shown in FIG. 3, the cross section orthogonal to the extending direction of the protrusion 62d has a substantially triangular shape, and the top portion is rounded and smoothed. The protrusion height of the protrusion 62d is greater than one time the thickness of the body sheet 19, preferably more than twice the thickness of the body sheet 19, and twice the thickness of the body sheet 19, and the tip member. Less than the sum of 20 thicknesses.

  As shown in FIG. 1, the welding head 63 is configured by a high frequency induction heating coil. The welding head 63 surrounds the three outer periphery pressing members 62 and consequently the outer periphery of the top core 65.

<Method for producing soft container>
A method for manufacturing the flexible container 1 will be described focusing on a method for joining the body portion 10 and the tip member 20.
The trunk | drum 10 and the front-end | tip member 20 are produced separately. Preferably, the barrel portion 10 and the tip member 20 are fabricated so that a certain clearance (gap due to a dimensional difference) is formed between the tip portion of the barrel portion 10 and the peripheral side portion 21 of the tip member 20.
A discharge port member 30 is joined to the tip member 20. Preferably, the discharge port member 30 is injection-molded on the resin sheet material at the same time as the tip member 20 is drawn from the resin sheet material. Thereby, the discharge port member 30 and the tip member 20 are integrally joined simultaneously with these moldings.

The tip member 20 with the discharge port member 30 and the body portion 10 are sent to the high-frequency welding device 60.
In the high frequency welding apparatus 60, the drive shaft 69 is set to the retracted position, and the top core 65 is set to a normal diameter. Further, the outer periphery pressing member 62 and the welding head 63 are retracted.
Then, the tip member 20 with the discharge port member 30 is put on the tip of the core 61.
Subsequently, the body portion 10 is put on the outer periphery that continues below the tip of the core 61. In addition, on the outer periphery of the top core 65 (on the outer periphery in the vicinity of the tip of the core 61), the distal end portion of the body portion 10 is overlapped with the outer peripheral side of the peripheral side portion 21 of the distal end member 20.
By setting the top core 65 to have a normal diameter, the tip member 20 and the body portion 10 can be reliably covered with the core 61. In addition, by providing a clearance between the distal end portion of the barrel portion 10 and the peripheral side portion 21 of the distal end member 20, the distal end portion of the barrel portion 10 can be easily covered with the outer periphery of the peripheral side portion 21 of the distal end member 20. Can do. When covering the trunk | drum 10, it can prevent that the trunk | drum 10 tears.
The envelope attaching part 10d of the body part 10 is directed toward the outer periphery pressing member 62A with the protrusion 62d.
Thereafter, the outer periphery pressing member 62 and the welding head 63 are set at the prescribed positions shown in FIG.

  As shown in an enlarged view in FIG. 5A, in this stage, there may be a case where a gap 10e in the sticking portion is formed in the envelope sticking portion 10d in the overlapping portion 1d of the body portion 10 and the tip member 20. The inter-sticking portion gap 10e is defined by the end surface of the inner sheet end portion 19e, the inner surface of the outer sheet end portion 19f, and the outer peripheral surface of the tip member 20, and along the end surface of the sheet end portion 19e, FIG. It extends in the direction perpendicular to the plane of FIG. The lower end portion of the gap 10e (the back of the page in FIG. 5A) is continuous with the internal space of the body portion 10 at the height of the lower end of the peripheral side portion 21. The upper end portion of the gap 10e (before the paper surface in FIG. 5A) is connected to the outside at the height of the upper end of the body portion 10.

Next, the top core 65 is expanded in diameter by setting the drive shaft 69 to the forward position. As a result, the peripheral side portion 21 of the tip member 20 is pushed and spread from the inner peripheral side by the top core 65 including the two inner peripheral holding members 66.
Further, the three outer periphery pressing members 62 are elastically biased radially inward from the three directions by the outer periphery pressing drive unit 72 such as an air cylinder.
As a result, the overlapping portion 1d between the peripheral side portion 21 of the tip member 20 and the tip portion of the body portion 10 is strongly sandwiched between the outer periphery pressing member 62 and the inner periphery pressing member 66 over the entire periphery. As a result, the peripheral side portion 21 of the tip member 20 and the tip portion of the body portion 10 are in close contact with each other over the entire circumference, and the clearance is eliminated.

  Further, as shown in FIGS. 3 and 5B, the inner side surface 62 s of one outer periphery pressing member 62 </ b> A faces the envelope pasting portion 10 d of the body portion 10. Further, the protrusion 62d of the inner side surface 62s bites into the overlapping portion 1d of the body portion 10 and the tip member 20 so as to cross the envelope pasting portion 10d and consequently the pasting portion inner gap 10e. In the portion 10f in which the protrusion 62d is bitten, the body portion 10 and the tip member 20 are strongly compressed. As a result, the in-pasting portion gap 10e is locally crushed at the intersection 10p with the protrusion 62d.

In this state, a high frequency current is supplied to the high frequency induction heating coil of the welding head 63. Thereby, the body 10 on the outer periphery of the top core 65 and the metal barrier layer of the tip member 20 are heated. In other words, welding energy is supplied from the welding head 63 onto the outer periphery of the top core 65. Thereby, the body part 10 and the resin layer of the tip member 20 on the outer periphery are heated and melted, and the body part 10 and the tip member 20 are welded.
Thereby, the soft container 1 is produced.

  As described above, since the clearance between the tip member 20 and the barrel portion 10 is eliminated over the entire circumference, the tip member 20 and the barrel portion 10 can be firmly welded and joined over the entire circumference. As a result, a gap due to the clearance can be prevented from being formed in the completed soft container 1.

Furthermore, since the gap 10e in the sticking portion is locally crushed in the portion 10p intersecting the protrusion 62d, the gap 10e in the sticking portion can be closed by welding the local portion 10p. Specifically, as shown in FIG. 5C, in the local portion 10p, for example, the sheet end portion 19f is deformed along the end surface of the sheet end portion 19e and is firmly welded to the end surface, and the gap is eliminated. For this reason, the gap 10e in a sticking part is parted in the local part 10p. Accordingly, it is possible to avoid the internal space of the flexible container 1 from communicating with the outside through the in-paste portion gap 10e. As a result, it is possible to prevent the contents in the soft container 1 from leaking through the sticking portion gap 10e and the outside air from entering the soft container 1 through the sticking portion gap 10e.
Moreover, the outer periphery pressing member 62 can stabilize the diameter dimension of the overlapping portion 1d of the tip member 20 and the body portion 10, and the dimensional accuracy of the flexible container 1 can be increased.

After the welding step, the drive shaft 69 is retracted downward, and the inner circumferential pressing member 66 is retracted radially inward by the elastic restoring force of the connecting plate 67 and the annular elastic member 68, whereby the top core 65 is returned to the original normal diameter. Return to.
Further, the outer periphery pressing member 62 and the welding head 63 are retracted.
Then, the soft container 1 is pulled out from the core 61 and taken out. The operation of pulling out from the core 61 can be facilitated by forming the body portion 10 and the peripheral side portion 21 of the tip member 20 in a slightly tapered shape.

<Gap-attached soft container 1B>
8 and 9 show a modified example of the soft container.
As shown in FIG. 8, in the flexible container 1 </ b> B, both end portions 19 e and 19 f of the sheet 19 constituting the trunk portion 10 are pasted together. For this reason, as shown in FIG. 9A, at the stage where the tip member 20 and the body portion 10 are put on the core 61, the gap between the roots of the both end portions 19 e and 19 f and the outer periphery of the peripheral side portion 21 of the tip member 20. A gap 10e in the pasting portion is formed between the surface and the surface.

  Thereafter, the top core 65 and the outer periphery pressing member 62 sandwich the overlapping portion 1d of the body portion 10 and the tip member 20, and the protrusion 62d intersects the joint-pasting portion 10g so as to bite into the overlapping portion 1d. The gap 10e is crushed. In this state, the overlapping portion 1d is welded. As a result, as shown in FIG. 9B, the in-pasting portion gap 10e can be closed.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the film structure, material, and manufacturing method of the trunk portion 10 and the tip member 20 can be modified as appropriate. High-frequency welding is used as a method for joining the peripheral side portion 21 of the tip member 20 and the body portion 10, but is not necessarily limited thereto, and other welding methods such as ultrasonic welding and heat welding are used. Also good. The peripheral side portion 21 of the tip member 20 may be covered and joined to the outer peripheral surface of the tip portion of the trunk portion 10. The core may be heated, and the heat may be transmitted to the overlapping portion 1d on the outer periphery of the core so that the overlapping portion 1d is welded.
The outer periphery pressing member may be an annular body that is not divided into a plurality of parts. The outer periphery pressing member may be omitted. The protrusion 62d of the outer periphery pressing member may be omitted.

  The present invention is applicable as an apparatus for manufacturing a discharge gun cartridge for fluids and viscous materials such as adhesives and paints.

1 Soft container 1d Overlapping part 9 Contents (contained items)
DESCRIPTION OF SYMBOLS 10 Body part 10d Envelope sticking part 10e Gap 10f inside sticking part 10g The part which the protrusion bite into 10g Joint part 10p Local part 19 Sheet | seat 19e, 19f Sheet | seat edge part 20 Tip member 30 Discharge port member 21 Peripheral side part 22 Shoulder part 23 Top part 60 High frequency welding equipment (joining equipment part in soft container manufacturing equipment)
61 Core 62 Outer periphery pressing member 62A 1 Outer periphery pressing member 62d Protrusion 62s Inner side surface 63 High frequency welding head 64 Base core 65 Top core (core portion near the tip)
65e Conical concave surface 66 Inner peripheral pressing member 66d Housing groove 67 Connecting plate 68 Annular elastic member 69 Drive shaft 69e Tapered portion 71 Air cylinder (shaft drive portion)
72 Air cylinder (peripheral presser drive part)
L ₆ axis

Claims (4)

A soft container manufacturing apparatus for joining a peripheral side portion of a tip member to a tip portion of a flexible body portion of a soft container,
A core in which the tip member is covered at the tip, the barrel is covered on the outer periphery following the tip, and the peripheral side portion of the tip member and the tip of the barrel are overlapped on the outer periphery in the vicinity of the tip;
Core driving means for expanding the diameter of the core portion in the vicinity of the tip of the core during the joining;
A soft container manufacturing apparatus comprising: a welding head for supplying welding energy on an outer periphery of the core portion. The core portion has a plurality of inner circumferential pressing members arranged separately in the circumferential direction,
2. The soft container manufacturing apparatus according to claim 1, wherein the core driving unit moves the plurality of inner circumferential pressing members forward and backward in a radial direction of the core.   The soft container manufacturing apparatus according to claim 1, further comprising an outer periphery holding member surrounding an outer periphery of the core portion.   The soft container manufacturing apparatus according to claim 3, wherein a protrusion extending in the circumferential direction is formed on a surface of the outer circumferential holding member facing the core portion.

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