JP3184839U - Discharge head for automatically opened film pack cartridge - Google Patents

Abstract

Disclosed is a film pack cartridge discharge head that can be automatically opened.
A film pack 2A, 2B in which a first component 1A and a second component 1B, which are two-component reactive fluid materials, are separately filled and sealed at least one end with clips 4A, 4B, and these are accommodated. The discharge head 5 used in the film pack cartridge to which the first and second film packs filled with the first and second components are connected to the bottomed cylindrical first and second film pack housing portions and the bottom surfaces thereof. A connecting portion, and a mixing nozzle 6 mounting portion, wherein the inside of the connecting portion forms a concave space on the inner bottom surface of the housing portion, penetrates to the tip inside the mixing nozzle mounting portion, and is divided by a partition, It is a second flow path, and the vertical width of the concave space is a width that does not exceed the center of each circle of the bottom surfaces of the first and second film pack accommodating portions, thereby the first and second film packs 2A and 2B. each Lip does not enter into the concave space.
[Selection] Figure 1

Description

  The present invention includes, for example, a two-component reactive adhesive such as an epoxy resin and a vinyl ester resin, a filler, and the like stored in a film pack, and the film pack is inserted into a pair of cylindrical holders connected in parallel. The present invention relates to an ejection head for a film pack cartridge for extrusion by an ejection device such as an extrusion gun.

Conventionally, as a film pack cartridge used for a two-component reactive adhesive contained in a foldable tube having flexibility (hereinafter referred to as a film pack) such as a laminate film (hereinafter also referred to as a film). There is a film pack cartridge in which the first component and the second component are filled in separate film packs, and these are connected in parallel by a discharge head.
When using such a film pack cartridge, the film pack is inserted into a holder in which two cylindrical bodies are juxtaposed, and a piston slidable in the longitudinal direction is mounted inside the cylindrical holder. A two-component reactive adhesive is discharged by setting in a discharge device such as a gun. Further, a mixing nozzle is mounted on the discharge side of the discharge head, and the first component and the second component are discharged while being automatically mixed.

When starting to use the film pack cartridge, it is necessary to open the film pack. In general, the film pack is automatically opened by pushing the film pack through the piston with an extrusion gun or the like.
For example, the following Patent Document 1 describes that opening is performed by puncturing means or by providing a weakened portion on the film (see paragraph 0023 of the same document).
Patent Document 2 describes a spatula-shaped punching mechanism in a discharge head as a puncturing means for a film pack (see FIGS. 1 and 2 of the same document and FIG. 12 attached to the present specification).
Patent Document 3 below describes that the discharge head is provided with such a length that the tip portion of the shovel-shaped blade touches the front portion of the film pack (see FIGS. 1 to 4 of the same document, the present specification). (See FIG. 11 attached to the document).
Furthermore, in the following Patent Document 4, it is described that a weakened region that is formed by heat treatment and acts as a planned breakage point is provided as a weakening of a part of the film. reference).

JP 2009-269694 A US Pat. No. 5,697,524 European Patent No. 0,653,362 JP-A-6-321258

In a conventional discharge head in which a spatula-like or shovel-like protrusion is provided on the discharge head as a puncturing means, the film pack may hit the protrusion due to vibration or impact during transportation, and may be opened unexpectedly. It was. In addition, when connecting the discharge head and the film pack with an adhesive, the adhesive sticks to the puncture part and the film pack cannot be opened automatically, or the film pack only pierces at the puncture part of the film pack. There is also a problem that the discharge resistance increases because the opening may be reduced or the puncture portion may narrow the flow path of the contents.
On the other hand, when a weakened portion is provided on the film, the film pack may break due to vibration or shock during transportation, and the film pack may be opened unexpectedly, and productivity is inferior due to an increase in the steps for providing the weakened portion in the film pack. There was also a problem of increased costs.
That is, in any case, the discharge heads of the prior art have problems in terms of unexpected opening of the film pack, automatic opening of the film pack, and cost.

In order to solve the problems associated with the discharge head of the prior art, the present inventor has intensively studied and experimented, and as a result, provided a concave space of a predetermined area on the inner surface of the connecting portion of the discharge head, and the film pack in the concave space. As a result, the present inventors have found that the problem cannot be solved by automatically opening the film in such a way that the film cannot be stretched by further inflating the film and then opening the film.
That is, the present invention is as follows.

[1] Used for a film pack in which a first component and a second component, which are two-component reactive flowable materials, are separately filled and at least one end is sealed with a clip, and a film pack cartridge for storing them. In the discharge head, the discharge head is
A bottomed cylindrical first film pack accommodating portion for accommodating film packs filled with the first component, which are juxtaposed at a distance, and a bottomed cylindrical shape for accommodating film packs filled with the second component The second film pack housing portion,
A connecting portion for connecting the bottom surfaces of the first and second film pack housing portions, and a mixing nozzle mounting portion;
The inside of the connecting portion forms a concave space on the inner bottom surface of the first and second film pack housing portions, penetrates to the tip inside the mixing nozzle mounting portion, and is divided into a first flow path divided by a partition, The vertical width of the concave space formed on the inner bottom surface of the first and second film pack housing portions does not exceed the center of each circle on the bottom surface of the first and second film pack housing portions. An ejection head characterized by having a width, whereby each clip of the first and second film packs does not enter the concave space.

  [2] The ejection head according to [1], wherein a convex rib is provided on all or part of an edge of the concave space on the inner bottom surface of the first and second film pack housing portions.

  [3] The convex ribs at the edges of the concave spaces on the inner bottom surfaces of the first and second film pack housing portions are part of convex rings surrounding the respective circle centers on the bottom surfaces of the first and second film pack housing portions. The discharge head according to the above [2].

  [4] The ejection head according to any one of claims 1 to 3, further comprising a cutting blade at a bottom portion of the concave space.

  [5] The ejection head according to [4], wherein the cut blade has a saw blade shape.

  [6] Any of the above [1] to [5], wherein the connecting portion has a convex shape on the outside of the bottom surface of the first and second film pack housing portions, and there is a reinforcing rib extending in the circumferential direction on the vertical side. Discharge head according to crab.

  If the discharge head according to the present invention is used, when the film pack is crushed by a discharge device such as a discharge gun and the two-component reactive fluid material filled in the film pack is discharged, By inflating the film pack in the concave space of the predetermined area and further pressurizing it, the film can not be stretched and the film pack is automatically opened so that it tears open. Therefore, the film pack is greatly opened, and the flow path of the contents is not narrowed, so that the discharge resistance can be reduced. Further, the discharge head according to the present invention is a highly productive discharge head because it is not necessary to provide a weakened portion in the film pack.

It is a schematic diagram in an embodiment of a discharge head concerning the present invention. It is the perspective view seen from the film pack mounting side of the discharge head which concerns on this invention. It is the perspective view seen from the film pack mounting | wearing side of the discharge head of embodiment of this invention which has a convex rib in all the edges of a concave space. It is the perspective view seen from the film pack mounting | wearing side of the discharge head of embodiment of this invention which has a convex rib of another form in a part of edge of the concave space of a discharge head. From the film pack mounting side of the discharge head according to the embodiment of the present invention, the convex ribs at the edges of the concave spaces are part of the convex rings surrounding the respective circle centers of the bottom surfaces of the first and second film pack housing portions. FIG. It is the perspective view seen from the film pack mounting | wearing side of the discharge head of embodiment of this invention which has a ring-shaped convex rib of another form in a part of edge of a recessed part space. It is the perspective view seen from the mixing nozzle mounting part side of the discharge head of embodiment of this invention. It is side surface sectional drawing of the discharge head of embodiment of this invention. It is the top view seen from the mixing nozzle mounting part side of the discharge head of embodiment of this invention. It is the top view seen from the film pack mounting part side of the discharge head of embodiment of this invention. 10 is an example of a side cross-sectional view of a conventional ejection head described in Patent Document 3. FIG. FIG. 10 is an example of another side cross-sectional view of a conventional ejection head described in Patent Document 2.

Hereinafter, the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the film pack cartridge includes two film packs 2A and 2B in which a first component (1A) and a second component (1B) of a two-component reactive fluid material are separately filled, and It comprises a discharge head 5 for connecting the film pack.
A mixing nozzle 6 is mounted on the discharge head 5, and the film packs 2 </ b> A and 2 </ b> B are each mounted with a piston (not shown) that can slide in the longitudinal direction inside a cylindrical holder in which two cylindrical bodies are juxtaposed. It is inserted into the holder 3 and discharged by a discharge device (not shown) such as an extrusion gun.

The film packs 2A and 2B store the first component (1A) and the second component (1B) of the two-component reactive fluid material in a flexible collapsible tube such as a flexible film, respectively. And at least one end, preferably both ends thereof are sealed with clips 4A and 4B, respectively, to form a sausage.
The material of the film used for the film packs 2A and 2B is not particularly limited, but a single film such as polyethylene film (PE), stretched nylon film (ON), pet film (PET), or these films and aluminum foil (AL) Laminate film in which is laminated in multiple layers.

  As shown in FIGS. 2 to 10, the discharge film 5 of the present invention is spaced apart and juxtaposed and has a cylindrical bottomed first film pack housing part that houses a film pack 2 </ b> A filled with the first component (A agent). It has a bottomed cylindrical second film pack housing portion 51B that houses a film pack 2B filled with 51A and a second component (B agent). The bottom surfaces of the accommodating portions 51A and 51B are connected by a connecting portion 52. The connecting portion 52 is provided with a cylindrical mixing nozzle mounting portion 55 whose outer periphery is threaded for mounting the mixing nozzle 6. . The connecting portion 52 is formed with concave spaces 53A and 53B with respect to the inner bottom surfaces of the first film pack housing portion 51A and the second film pack housing portion 51B, and penetrates to the tip inside the mixing nozzle mounting portion 55. The first component flow path (first flow path) 54A and the second component flow path (second flow path) 54B are divided by the partition wall 58 (see FIGS. 7 to 10).

  The concave spaces 53A and 53B are such that when the film pack is squeezed by a discharge device such as an extrusion gun in order to discharge the contents from the film pack, the film pack swells and further pressurizes so that the film does not stretch. It is a space for tearing. For this reason, the vertical width (W1) of the concave spaces 53A and 53B formed on the inner bottom surfaces of the first and second film pack housing portions is the center of each circle on the bottom surfaces of the first and second film pack housing portions 51A and 51B. It is assumed that the clips 4A and 4B of the first and second film packs do not enter the concave space (see FIGS. 8 and 10). Here, the vertical width (W1) means the distance in the line direction connecting the respective circle centers of the bottom surfaces of the first and second film pack housing portions 51A and 51B, and the vertical width (W1) is the first and second 2 The width not exceeding the center of each circle of the bottom surfaces of the film pack accommodating portions 51A and 51B means that the concave space is first and second from the center of each circle of the bottom surfaces of the first and second film pack accommodating portions 51A and 51B. It means that the film pack housing part is unevenly distributed toward the connecting part. When the width exceeds the center of each circle, there is a high risk that the clips 4A and 4B of the film packs 2A and 2B will enter the concave spaces 53A and 53B, and the swelling of the film packs 2A and 2B at the time of opening becomes small, Will not break.

  On the other hand, the width (W2) and depth (H) of the concave spaces 53A and 53B formed on the inner bottom surfaces of the first and second film pack housing parts are not particularly limited, but the film pack is crushed by a discharge device such as an extrusion gun. In this case, the film pack is swelled inside the concave spaces 53A and 53B, and is further pressurized so that the volume of the concave space necessary for the film not to be stretched and to be cleaved is obtained (FIG. 8, 10). The width (W2) is preferably 1/3 to 1/5 of the diameter of the inner bottom surface of the first and second film pack housing parts, and the depth (H) is preferably 5 to 15 mm.

As shown in FIG. 3, the concave spaces 53A and 53B formed on the inner bottom surfaces of the first and second film pack accommodating portions have edges of the concave spaces 53A and 53B on the inner bottom surfaces of the first and second film pack accommodating portions. It is preferable to provide convex ribs 57A and 57B along.
This is because, as described above, the clips 4A and 4B of the film packs 2A and 2B enter the concave spaces 53A and 53B, the swelling of the film packs 2A and 2B at the time of opening is reduced, and even when the pressure is further applied, the film pack 2A is split. The height of the convex rib (height from the bottom of the film pack holding part) is not particularly limited, but is 8 mm or less, preferably 5 mm or less.

  Further, as shown in FIG. 4, the convex ribs 57A ′ and 57B ′ do not need to be provided over the entire edges of the recessed spaces 53A and 53B, but are located on the center side of the film pack housing portion at the edges of the recessed spaces 53A and 53B. There may be only a part.

  Further, as shown in FIGS. 5 and 6, the convex ribs at the edges of the concave spaces on the inner bottom surfaces of the first and second film pack housing portions are located at the respective circular centers of the bottom surfaces of the first and second film pack housing portions. It is preferably part of the surrounding convex rings 57A ", 57B". This is because the clips 4A and 4B are fixed inside the convex rings 57A "and 57B", so that the positions of the clips 4A and 4B can be stabilized in the bonding process between the ejection head 5 and the film packs 2A and 2B during manufacturing. This is because it can be fixed. The shape of the convex rings 57A ″ and 57B ″ is not particularly limited, such as a circle, a semicircle, a half moon, and an arc shape. Moreover, although a dimension is decided by the magnitude | size of clip 4A, 4B to be used, about 5-10 mm in diameter is preferable.

  Although not particularly limited, as shown in FIG. 7, the connecting portion 52 is formed in a convex shape toward the outside of the bottom surface of the first and second film pack housing portions 51A and 51B. In this case, the shape may be a rectangle, an oval shape, an ellipse, or a convex shape with the shape of the concave spaces 53A and 53B. For example, when the shape of the concave spaces 53A and 53B is maintained, the vertical width (W1), horizontal width (W2), and depth (H) of the concave spaces 53A and 53B are the vertical width and horizontal width of the connecting portion 52, respectively. In other words, the height can be restated (see FIGS. 7 to 10).

  Although not particularly limited, the bottoms of the film pack housing parts 51A and 51B are thinned to reduce waste. Therefore, reinforcing ribs extending in the longitudinal direction and in the circumferential direction are formed on the side surfaces of the connecting parts. 59 is preferably provided (see FIGS. 7 to 9).

  Moreover, it is preferable to provide the cutting blades 56A and 56B for ensuring the opening of the film pack at the corners of the connecting portion 52 and the mixing nozzle mounting portion 55 (see FIGS. 2 to 6 and 8). This is because the film hits the cutting blades 56 </ b> A and 56 </ b> B and the film is surely cut when it cannot be opened even if the film pack extends. The shape of the cutting blades 56A and 56B may be any as long as the tip is sharp and the effect of piercing the film can be exerted. Since the cutting blades 56A and 56B come in a direction perpendicular to the wrinkles, the reliability of automatic opening is further improved. Even if a cutting blade is provided at the corner portion of the connecting portion 52 and the mixing nozzle mounting portion 55, the film pack before use does not hit the cutting blades 56A and 56B. The film pack never expands, and the film pack swells and hits the cutting blade when the film is fully stretched.

The diameters of the first and second film pack accommodating portions 51A and 52A are determined by the mixing ratio of the two-component reactive materials used, the holder used, the discharge device, and the like.
The material of the discharge head 5 of the present invention is not particularly limited, but is generally a thermoplastic resin such as polypropylene or polyethylene, and this is injection molded to manufacture the discharge head.
The two-component flowable materials 1A and 1B in the present invention are not particularly limited, but are used as an injection material by mixing two components of agent A and agent B at a predetermined mixing ratio. Examples thereof include resins, vinyl ester resins, and urethane acrylate resins. In general, a mixture of these resins with calcium carbonate, silica, silica sand or the like is used.

1A, 1B Flowable material first component (agent A), second component (agent B)
2A, 2B Film pack 3 Holder 4A, 4B Clip 5 Discharge head 51A, 51B Film pack housing part 52 Connection part 53A, 53B Recessed space 54A, 54B Channel 55 Mixing nozzle mounting part 56A, 56B Cut blades 57A, 57B, 57A ' , 57B ', 57A ", 57B" Convex ring 58 Bulkhead 59 Reinforcement rib 5' Discharge head 6 of the prior art 6 Mixing nozzle

Claims (6)

In a discharge head used for a film pack in which a first component and a second component, which are two-component reactive flowable materials, are filled separately and at least one end is sealed with a clip, and a film pack cartridge for storing them The discharge head is
A bottomed cylindrical first film pack accommodating portion for accommodating film packs filled with the first component, which are juxtaposed at a distance, and a bottomed cylindrical shape for accommodating film packs filled with the second component The second film pack housing portion,
A connecting portion for connecting the bottom surfaces of the first and second film pack housing portions, and a mixing nozzle mounting portion;
The inside of the connecting portion forms a concave space on the inner bottom surface of the first and second film pack housing portions, penetrates to the tip inside the mixing nozzle mounting portion, and is divided into a first flow path divided by a partition, The vertical width of the concave space formed on the inner bottom surface of the first and second film pack housing portions does not exceed the center of each circle on the bottom surface of the first and second film pack housing portions. An ejection head characterized by having a width, whereby each clip of the first and second film packs does not enter the concave space.   2. The ejection head according to claim 1, wherein a convex rib is provided on all or a part of an edge of the concave space on the inner bottom surfaces of the first and second film pack housing portions.   The convex ribs at the edges of the concave spaces on the inner bottom surfaces of the first and second film pack housing portions are part of the convex rings surrounding the respective circle centers on the bottom surfaces of the first and second film pack housing portions. The discharge head according to claim 2.   The ejection head according to claim 1, further comprising a cutting blade at a bottom portion of the concave space.   The ejection head according to claim 4, wherein the cutting blade has a saw blade shape.   The said connection part is convex in the 1st and 2nd film pack accommodating part bottom face outer side, and there exists a reinforcement rib extended in the circumferential direction in the vertical side. Discharge head.

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