JP2539747Y2 - Sealant container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealant container containing a silicone rubber or urethane rubber composition used for bonding, coating, potting, sealing and the like in various industries such as filling of a space in civil engineering and construction, electric and automobile. .

[0002]

2. Description of the Related Art In general, a sealant container is formed integrally with a cylindrical main body having an opening at a rear end and a small hole at the center provided with a discharge hole which is connected to a nozzle for pushing out contents.
Rear lid (plunger) attached to the rear end opening of the cylindrical body
More filled contents to push the over) in the body
It is used extruded from a nozzle .

[0003]

[Problems to be Solved by the Invention] In use, this sealant container is usually used as an extruding jig (hereinafter, referred to as a caulking gun or a cartridge gun) as shown in FIGS. (Abbreviated as caulking gun) 2
Mounted on, presses the plunger 5 flop Sshuroddo 4 is advanced by pulling the trigger 3, the contents are extruded from nozzles 6. Others as caulking guns,
Although there is a method of pushing out by air pressure, etc., all of the caulking guns are used in a state where the shoulder 8 of the sealant container is fixed to the tip of the semi-cylindrical body 7. The rising plate 9 formed at the tip of the caulking gun is formed with a stepped portion 10 bulging inward, and a ridge 11 formed around the entire periphery of the shoulder 8 of the sealant container is engaged with the stepped portion 10. When the sealant container is mounted on the caulking gun, the step portion 10 engages the ridge 11 formed on the shoulder of the container to prevent the sealant container in use from coming off. That is, the sealant container 1 is
In the case where the sealant container 1 is detached from the caulking gun 2 as shown in FIG.
However, the protrusion 11 engages with the step portion 10 of the caulking gun to support the pushing load from the rear end of the container and prevent the sealant container 1 from coming off the caulking gun 2. I do. Therefore, it is desirable that a ridge corresponding to the step of the caulking gun be formed on the shoulder of the sealant container.

Conventionally, as such a sealant container,
A cylinder as shown in FIG. 7 using a means such as injection molding of a thermoplastic such as polyethylene or polypropylene .
The main body 12 and the nozzle portion 17 are separately formed, and the cylindrical main body is formed.
12 aluminum foil 20 for the shoulder portion inside the moisture permeation prevention
Knowledge is one in which a ridge to shoulder the entire circumference of the assembly by welding
Are et al. However, in molding the container body,
It is difficult to form a ridge on the periphery of the shoulder for stably engaging the caulking gun.

Namely, the tip of the case, in FIG. 7 (1) figure for attaching the nozzle 17 as shown in (2) Fig shaping such sealant container using means such as injection molding of thermoplastic plastics Since the thread protrusion 21 and the knurl recess 22 formed in the thread 18 project in a direction different from the axial direction (arrow direction) of the sealant container, this portion is obstructed in the mold opening / closing direction and is separated. There is a problem with the mold, and the mold for molding necessarily needs a split mold portion that opens and closes in a direction different from the mold opening and closing direction. Although there is no practical problem if the knurl recess 22 is not used as a sealant container, it is preferable to form the knurl recess as disclosed in Japanese Utility Model Application Laid-Open No. 63-114948.

[0006] However, in the case where the screw portion and its vicinity are divided,
The problem of mold release of the screw and knurled part is improved.
As shown in 8 (enlarged view near the split mold), the above-mentioned ridge 19 on the periphery of the shoulder becomes an obstacle in the mold opening direction (arrow direction). For this reason, conventionally, when a ridge is formed on the entire periphery of the shoulder portion to be engaged with the tip of the caulking gun of the sealant container, a taper or a radius is provided at a corner which becomes an obstacle in the mold opening direction to reduce resistance. After minimizing as much as possible, the mold was forcibly opened and the product was taken out.However, the vicinity of the peripheral ridge on the shoulder is easy to deform and break, and to reduce this
It is necessary to take a considerably long cooling time after injecting the hot-melt resin into the mold,
Product yields and production efficiency were greatly reduced. Further, in such a method, the height of the ridge that can be formed is limited, and there is a problem that the ridge that can be completely engaged with the step of the caulking gun is difficult to be formed.

Further, as in the conventional sealants container, if there is provided a projection of the periphery all around the caulking gun engaging wear of the shoulder portion, when mounted on the caulking gun showing the container in Figure 5, the caulking gun the rising plate 9 formed at the distal end, the strike projection 11 of the sealant container, interfere Geyasui the fastening to the caulking gun stepped portion 10 of the protrusion 11. Thus the total length of the semi-cylindrical body 7 of the caulking gun is made considerably larger than the overall length of the sealant container (length to the shoulder rib 11), when the container mounting, rising
To avoid interference of the ridge 11 on the plate 9, a sealant container
1 is attached to the semi-cylindrical body 7 at a distance from the riser plate 9 and then pressed toward the tip so that the ridge 1 on the shoulder portion of the container is formed.
1 and the caulking gun step 10 are engaged. For this reason, there is a problem that the caulking gun itself becomes unnecessarily large, and mounting work is troublesome, inconvenient, and poor in workability.

[0008] In recent years, a sealant container made of a thermoplastic plastic and having no ridge at the periphery of the shoulder portion has been found on the market. since there is no wear to the protrusions, applying a extrusion load, filling contents into predetermined positions as shown in FIG. 6, when applied, from the shoulder portion 8 of the sealant container 'is (1) FIG. 9, (2) It is deformed as shown in the figure, the load fulcrum position is shifted, and it is easy to be detached from the caulking gun. Therefore, a caulking gun with a lid that holds the entire sealant or the like must be purchased separately, or when using a conventional caulking gun, it must be held with both hands, and there is a problem in economy and workability.

[0009] The present invention is intended to solve these conventional problems, in the case of forming the sealant container by thermoplastics, without requiring a complicated mold, caulking the shoulder periphery of the sealant container Easy to gun
And the projections that can be stably engaged can be easily formed, and while improving the product yield and production efficiency, the working efficiency with the conventional caulking gun is not reduced,
Another object of the present invention is to provide a practically excellent sealant container capable of reducing the size of the caulking gun itself.

[0010]

Means for Solving the Problems Thermoplastic Plus of the Invention
The cylindrical sealant container made of ticks is provided with a caulking gun engaging projection projecting in the axial direction of the container at at least one position located on the dividing line of the split mold around the shoulder of the container , and The protrusion is the sealant
Drawing from point C on the dividing line on the surface excluding the outer peripheral surface of the container
The drawn tangent line A was drawn from the point C in the mold split direction.
The same as line B or outside the container near point C
ing.

Hereinafter, the sealant container of the present invention will be described with reference to the accompanying drawings. FIGS. 1 (1) to (5) are plan views of shoulder portions of sealant containers having different shapes of projections, and FIG. 1 (6) is a view taken along the line AA of FIG. 1 (1). Line cross section,
FIG. 1 (7) is a sectional view taken along line BB of FIG. 1 (5). Also, (1), (2), and (3) in FIG.
FIG. 3 is a plan view showing an example of an inappropriately shaped projection for comparison with the shoulder portion of the sealant container shown in FIGS. ) figure, the sealant container,
A partial sectional view and a front view of the tip of the state of mounting the caulking gun, (3) in Figure 3. Figure, (4) drawing of the present invention Sea
It is a top view showing other modes of a shoulder in a runt container . 4 (1), (2) and (3) of FIG. 4 are explanatory diagrams showing the relationship between the projection and the split mold.

As shown in FIGS. 1 (1) to 5 (5), a projection 11 which is attached to a caulking gun and protrudes in the axial direction of the container is provided on the periphery of the shoulder 8 of the cylindrical sealant container 1. It is provided at one location or preferably at two locations facing each other,
These are formed integrally with the cylindrical wall 11 'by injection molding or the like. These caulking gun engagement projections,
As shown in FIG. 4, it is located on the split line of the split mold, and
On the dividing line on the surface excluding the outer peripheral surface of the sealant container 1
The tangent line A drawn from the point C is used to divide the mold from the point C.
The same as the line B drawn in the direction or on the outside close to the point C of the container
It needs to be formed as
As a result, the protrusion 11 is deformed due to the operation of the split mold.
Avoid the condition, and as shown in the results in Table 1 below,
It is possible to improve the productivity by improving the efficiency.

The projection 11 satisfies the above requirements, and
If it is a convex shape that can be stably engaged with the stepped part of the gun,
It is not limited to the shapes shown in (1) to (5) in FIG.
And may be formed in any shape. Inappropriate on the contrary
Examples of the specific shapes of the various projections are shown in FIGS.
And the like. Each of these shapes
An obstacle to the split mold opening direction (arrow direction). Protrusion
11 , the maximum width dimension b, b 'must be smaller than the width of the step portion of the caulking gun, but a certain strength is required from the viewpoint of supporting the pushing force and preventing detachment. It is better to be larger than the wall thickness a of the cylindrical wall 11 '.

According to the thermoplastic plastic sealant container according to the present invention, the shoulder periphery of its, since the projection of the shape that can be engaged stably to the step portion of the caulking gun can be easily molded, using If the container without departing from the caulking gun, also for mounting the container caulking gun, then after inserting the combined portion without projecting shoulder the rising plate of caulking gun, rotating the container itself during Thus, the projection can be easily engaged with the step portion of the caulking gun.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (1) to FIG. 5 (5), FIG.
(3) Seven thermoplastic sealant containers each having a caulking gun engaging projection shown in FIG.
A push-out test was carried out by attaching to a caulking gun indicated by. Each of these sealant container body and plunger
High-density polyethylene JS110 (trade name, manufactured by Mitsubishi Kasei)
The nozzle is made of low-density polyethylene NUC polyethylene (trade name, manufactured by Nippon Unicar) by injection molding. A moisture-permeable aluminum foil (made of Showa Aluminum) is heat-sealed to the inner surface of the sealant container, and the width is about 20 m near the plunger insertion part.
About 0.1 g of silicone wax KP380 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was applied over the entire surface to ensure airtightness and slidability when the plunger was inserted.

The thickness a of each sealant container body is 1.3 mm, and the thickness of the projections or ridges b and b 'formed on the shoulder of each container body is as shown in Table 1. . After about 330 ml of silicone sealant SA-45 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was filled in each sealant container, it was sealed with a plunger. These sealant containers are mounted on the caulking gun 2 shown in FIG. 5, and after the moisture-permeable aluminum foil is broken, a nozzle is attached, and as shown in FIG. 6, extrusion is performed to fill or apply a silicone sealant to a predetermined location. The test was performed. As a result, it was possible to extrude the silicone sealant without any problem. However, the productivity and product yield during molding are as shown in Table 1, and FIG.
(5) Compared with FIGS. 2 (2) and (3) of FIG. 2, the molding cycle and the yield were greatly improved, and high production efficiency was obtained. In addition, at the time of mounting, the container shown in FIGS. 1 (1) to (5) and FIG. 2 (2) is inserted by pressing a portion of the container having no shoulder protrusion against the caulking gun rising plate, By rotating the container itself by 90 to 180 °, the caulking gun step and the protrusion on the container shoulder could be easily engaged.

[Table 1]

[0017]

[Effect of the Invention] In the sealant container according to the present invention, the periphery of the shoulder of the thermoplastic sealant container is
Since at least one projection that can be engaged with the step portion at the tip of the caulking gun is provided, the sealant container can be easily attached to the caulking gun, and when used, the container supports the pushing load. However, the sealant container can be held so as not to come off from the caulking gun. In addition , since the coking gun itself can be reduced in size, workability is good, and a commercially available simple caulking gun can be used, which is economical, and furthermore, the projection does not become an obstacle in the operation direction of the molding die. With such provision, it is possible to reduce deformation and breakage during molding of the sealant container, and to improve the productivity by shortening the molding time.

[Brief description of the drawings]

FIGS. 1 (1) to 1 (5) are plan views of shoulder portions of sealant containers having different projection shapes , and FIG. 1 (6) is a line AA in FIG. 1 (1).
FIG. 7 (7) is a sectional view taken along line BB of FIG. 5 (5) .

FIG. 2 (1) to (3) form projections of an unfavorable shape
It is the top view which showed the shoulder part of the sealant container which was done.

[3] (1) is a partial cross-sectional view of the distal end portion where the sealant container of the present invention is mounted on the caulking gun, (2),
A front view thereof, (3), in the sealant container of the present invention
It is a top view which shows the other aspect of a shoulder part.

FIGS. 4 (1) to (3) are explanatory diagrams showing a relationship between a projection and a split mold.

FIG. 5 is a cross-sectional view of a state in which the sealant container is mounted on a caulking gun, and FIG. 5B is a front view of the tip thereof .

FIG. 6 is a schematic view of a state in which a sealant container is used by being attached to a caulking gun.

FIG. 7 (1) is a partially cutaway side view of a sealant container formed of a thermoplastic plastic , and (2) is a partially enlarged cross-sectional view of a tip portion thereof.

FIG. 8 is an enlarged view in the vicinity of a split mold at the front end in molding a conventional sealant container.

FIG. 9 is a cross-sectional view of a state in which a conventional sealant container having no protrusion on a shoulder is mounted on a caulking gun, and FIG.
It is sectional drawing of the front-end | tip part which shows the container deformation at the time of the content extrusion.

[Explanation of symbols]

1 Sealant container 2 caulking gun 3 Trigger 4 flop Sshuroddo 5 plunger 6,1 7 nozzles 8, 8 'shoulder 9 rising plate 10 stepped portion of the sealant container 11, 19
Projection 11 'Cylindrical wall 12 Ring-shaped projection 20 Aluminum foil 21 Screw ridge 22 Knurl recess

Claims (1)

(57) [Scope of request for utility model registration] 1. A method according to claim 1, wherein a peripheral edge of a shoulder of the cylindrical sealant container made of thermoplastic is located on a dividing line of a split mold.
That in at least one place, a caulking gun engagement worn protrusion protruding in the axial direction of the container, the outer periphery of the sealant container
A tangent drawn from point C on the dividing line in the plane excluding the plane
A is the same as the line B drawn from the point C in the mold split direction
Or a sealant container provided outside the container near point C.