JP3231525B2 - Discharge gun cartridge assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge gun cartridge assembly which is used by being mounted on a discharge gun by enclosing a flowable material such as an adhesive.

[0002]

2. Description of the Related Art As shown in FIG. 5, a generally used discharge gun cartridge 1 has a cylindrical main body 3 made of a relatively hard synthetic resin material and provided with a discharge port 2 at a distal end thereof.
And a lid 4 screwed to the discharge port 2 of the cylindrical main body 3;
It comprises a movable bottom plate 5 slidably provided along the longitudinal axis on the rear end inner surface of the cylindrical body 3 and a fluid material 6 such as an adhesive sealed inside the cylindrical body 3. ing.

As shown in FIG. 7, a discharge gun 7 for mounting and fixing the cartridge 1 at a predetermined position includes a grip 8 and a semi-cylindrical support portion 9 extending forward from the upper end of the grip 8 and supporting the cartridge 1. Discharge gun main body 10 and discharge gun main body 10 provided at the distal end of semi-cylindrical support portion 9.
, An end plate 11 having a substantially horseshoe shape with which the discharge port 2 side abuts, an operating rod 14 having a pressing plate 12 at the tip and pressed forward by a spring 13, and an operating rod 14 rotatably mounted on the grip 8. And a lever 15 for controlling the movement of the lever.

In order to mount the cartridge 1 filled with the fluid material 6 on the discharge gun 7, first, the lid 4 shown in FIG.
Then, the nozzle 16 is screwed and fixed as shown in FIG. Then, the ejection gun cartridge 1 with the nozzle 16 fixed thereto is set at a predetermined position of the cylindrical support portion 9 of the ejection gun 7.

The fluid material 6 enclosed in the cartridge 1
In order to discharge the ink to the target, the cartridge 1 provided on the discharge gun 7 with the discharge gun 7 is arranged so that the nozzle 16 faces the target, and the lever 15 of the discharge gun 7 is moved to the arrow A.
Pull in the direction of. By the operation of the lever 15, the operating rod 14 moves forward while using the force of the spring 13, and the pressing plate 12 provided at the tip of the operating rod 14 moves the cartridge supported by the semi-cylindrical support portion 9. Push the bottom plate 5 forward. By sliding the movable bottom plate 5 forward, the fluid material 6 sealed in the cartridge 1 is discharged from the nozzle 16.

[0006]

In a cartridge for a discharge gun of the above type, the contents contained in a cylindrical body molded of synthetic resin are slid forward on a movable bottom plate provided in the cylindrical body. As the discharge gun cartridge is ejected, the cylindrical body of the discharge gun cartridge does not change in size before and after use, and therefore, when discarding a used discharge gun cartridge, the inside is empty. Nevertheless, there is a problem that the waste is discarded in the same shape as before use, and a large amount of waste is discharged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a structure in which the intermediate body of the cartridge is made of a plastic laminate film cylindrical body so that the cartridge can be compactly compressed. It is an object of the present invention to provide a cartridge assembly for a discharge gun that removes a used cartridge and eliminates the problem of dust disposal when discarding a used cartridge.

[0008]

A cartridge assembly for a discharge gun according to the present invention comprises an intermediate body formed into a tubular shape with a plastic laminate film and an upper molded part integrally connected to both ends of the intermediate body. And a cartridge having a lower molding portion, and an outer cylinder that houses the cartridge. The upper molding portion and the lower molding portion are formed by injecting a synthetic resin material in a molten state by insert injection molding means. The molded part has a discharge hole, and the lower molded part has an outer surface slidable on the inner surface of the outer cylinder, and a plurality of narrow grooves extending in the axial direction at circumferentially spaced intervals on the inner surface of the end of the outer cylinder. Is formed. In the cartridge assembly for a discharge gun of the present invention, the intermediate body portion of the cartridge may be formed into a cylindrical shape with one end open or a cylindrical shape with both ends open, and a metal foil may be interposed in the plastic laminate film. In addition, the cartridge is composed of two halves, and separate contents are separately housed in the two halves, so that the contents can be mixed after ejection.

[0009]

In the cartridge assembly for a discharge gun of the present invention, an adhesive is used by forming the cartridge by integrally connecting the upper molded portion and the lower molded portion to the intermediate body portion by insert injection molding means. The intermediate body and the upper and lower molded parts can be connected without any need, and the intermediate body can be compactly compressed by using a plastic laminate film cylindrical body. By providing a plurality of narrow grooves extending in the axial direction at intervals in the direction, the compressed cartridge can be taken out of the outer cylinder in its compressed state.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 shows a cartridge assembly 20 for a discharge gun according to the present invention.
The cartridge assembly 20 for a discharge gun includes a cartridge 21 in which a fluid material such as an adhesive is sealed, and an outer cylinder 22 in which the cartridge 21 is slidably mounted.

The cartridge 21 has an intermediate body 23, an upper molded portion 24 integrally molded at one end of the intermediate body 23 by insert injection molding means, and an insert injection at the other end of the intermediate body 23. And a lower molding portion 25 integrally molded. A discharge port 26 is formed integrally with the upper molded portion 24, and a lid (not shown) is screwed onto a screw surface 27 provided on the outer surface of the discharge port 26. In order to secure the seal of the discharge port 26, it is convenient to dispose a lid material so as to cover the opening of the discharge port 26. The lower molding portion 25 of the cartridge 21 has an annular bottom portion, and also serves as a pressing portion to which a pressing plate of an operating rod of the discharge gun contacts.

The intermediate body 22 is formed of a material obtained by cutting a plastic laminate film into a rectangular shape, and is formed into a tubular shape having both ends opened by joining the side ends of the material to an envelope pasting mold. The intermediate body 22 may be formed in a tubular shape with both ends open by joining the side ends of the material to each other and joining them together in a jointed palm type. The plastic laminate film is made of a polyethylene film having a thickness of 50 μm, a polyester film having a thickness of 12 μm, an aluminum foil having a thickness of 9 μm and a thickness of 50 μm in consideration of a material which does not act on an adhesive or a sealing material and flexibility. A laminate of a micron polyethylene film is selected.

An outer cylinder 22 containing the cartridge 21 therein
Are formed of a relatively hard synthetic resin material, and narrow grooves 28, 28,... Extending in the axial direction are formed on the inner surface on one end side at intervals in the circumferential direction. These narrow grooves 28
A large-diameter portion is formed at the end of the outer cylinder 22 so that the cartridge 21 compressed inside the outer cylinder 22 can be taken out of the outer cylinder 22 in a compressed state without being deformed. The shape of the inner surface of the outer cylinder 22 corresponds to the shape of the lower molding portion 25 of the cartridge 21. When the cartridge 21 slides on the inner surface of the outer cylinder 22, the intermediate body portion 22 moves outwardly from the lower molding portion 25. It does not protrude from between the inner surfaces of the cylinder 22.

FIG. 2 shows a method of manufacturing the cartridge 21 of the cartridge assembly 20 for a discharge gun according to the present invention. In order to make the cartridge 21, an intermediate body 23 is formed into a cylindrical shape having openings at both ends. Things are selected. The intermediate body portion 23 having the openings at both ends is mounted on a mandrel 29 serving as a mold core. The mandrel 29 provided with the intermediate body 23 is mounted on a mold 30 having a space having a shape corresponding to the upper molding portion 24 and a space having a shape corresponding to the lower molding portion 25 of the cartridge 21. This allows
A molding space for the lower molding part 25 surrounded by the mandrel 29 and the mold 30 is defined.

Next, the spacer 31 is placed from above the mold 30.
Is mounted on the mold 30. Thereby, the mandrel 29
A molding space for the upper molding portion 24 surrounded by the metal mold 30 and the spacer 31 is defined. The molding space for the lower molding part 25 and the molding space for the upper molding part 24 are
Are communicated with each other by a runner 31 provided at the bottom. When the setting of the intermediate body portion 23 in the mold 30 is completed, the injection molding means is inserted into the molding space of the lower molding portion 25 and the molding space of the upper molding portion 24 through the gate port 32 provided in the mold 30 through the runner 31. , A synthetic resin material such as a polyethylene resin is injected in a molten state. Thereby, the upper molded part 24 and the lower molded part 2 are
5 are integrally joined, whereby the cartridge 21 having the lower end opening is formed.

In order to fill the lower end opening of the cartridge 21 with the adhesive, the cartridge 21 is inserted into the upper molding portion 24.
Is attached to the filling machine so as to grip the discharge port 26 provided in the upper molding section 24 with the lower side, and the adhesive discharged from the filling machine is filled into the intermediate body from the opening of the lower molding section 25,
After the intermediate body 23 is filled with a predetermined amount of adhesive, the opening end of the intermediate body 23 is closed. The lower forming part 25 also functions as a pressing part pressed by the operating part of the discharge gun.

FIG. 3 shows the shape of the used cartridge 21 after being mounted on the discharge gun 7 and taking out the contents.
In this case, the cartridge 21 slides while being pressurized in the outer cylinder 22, but the intermediate body 23 is deformable because it is a cylindrical body of a plastic laminated film, and is pressed by the operating rod 14 of the discharge gun 7. And compressed compactly. Then, the compressed cartridge 21 is
Narrow grooves 28 provided on the inner surface on one end side of the
As a result, the frictional force on the inner surface of the outer cylinder 22 is reduced, and the outer cylinder 22 is taken out in a compressed state. The taken-out cartridge is discarded in a compressed state, and the remaining outer cylinder 22 is reused.

FIG. 4 shows another embodiment of the present invention. In this embodiment, the cartridge 21A has a semicircular half of an intermediate body portion 23a, an upper molding portion 24a and a lower molding portion 25a, and an intermediate portion. The body 23b, the upper molded part 24b, and the lower molded part 25b have a structure in which two semicircular halves are combined, and the intermediate body 23a and the intermediate body 23b are separately filled with different types of adhesives. Is done.

[0019]

As described above, according to the present invention, an intermediate body made of a plastic laminate film is provided.
The upper molded part and the lower molded part are integrally joined by the insert injection molding means, so that the intermediate body part and the upper molded part and the intermediate body part and the lower molded part can be joined without using an adhesive. The body can be compactly compressed by making the body a cylindrical body of a plastic laminated film, and the compressed cartridge has a plurality of narrow grooves extending in the axial direction at an inner surface on one end side at intervals in the circumferential direction. The used cartridge can be taken out from the outer cylinder in the compressed state, so that the used cartridge is not discarded.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a part of a cartridge assembly for a discharge gun according to the present invention.

FIG. 2 is a view showing a method of manufacturing a cartridge of a cartridge assembly for a discharge gun according to the present invention.

FIG. 3 is a view showing a used state of a cartridge of the cartridge assembly for a discharge gun according to the present invention.

FIG. 4 is a view showing another embodiment of the cartridge of the cartridge assembly for a discharge gun according to the present invention.

FIG. 5 is a diagram showing a conventional ejection gun cartridge.

FIG. 6 is a diagram showing a state where a nozzle is mounted on a conventional ejection gun cartridge.

FIG. 7 is a view showing a discharge gun.

[Explanation of symbols]

 7 Discharge Gun 20 Cartridge Assembly 21 Cartridge 22 Outer Cylinder 23 Intermediate Body 24 Upper Forming Part 25 Lower Forming Part 26 Discharge Port 28 Narrow Groove

Continuation of the front page (56) References JP-A-53-61484 (JP, A) JP-A-61-227037 (JP, A) JP-A-60-22962 (JP, A) JP-A-1-176472 (JP) , A) Japanese Utility Model Sho 57-29756 (JP, U) Japanese Utility Model Sho 47-36513 (JP, Y1) Japanese Utility Model Sho 64-1270 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB Name) B05C 5/00-5/04 B05C 17/005-17/015 B65D 83/00

Claims (5)

(57) [Claims] 1. A cartridge having an intermediate body formed into a tubular shape with a plastic laminated film, an upper molding part and a lower molding part integrally connected to both ends of the intermediate body, and an outer part in which the cartridge is mounted. The upper molding part and the lower molding part are formed by injecting a synthetic resin material in a molten state by insert injection molding means, the upper molding part has a discharge hole, and the lower molding part has an outer surface. A discharge gun cartridge set, characterized in that a plurality of narrow grooves extending in the axial direction are formed on the inner surface of the end of the outer cylinder so as to be slidable on the inner surface of the outer cylinder. Three-dimensional. 2. The cartridge assembly for a discharge gun according to claim 1, wherein the intermediate body has a cylindrical shape with one end opened. 3. The cartridge assembly for a discharge gun according to claim 1, wherein the intermediate body has a cylindrical shape with both ends opened. 4. The cartridge assembly for an ejection gun according to claim 1, wherein the plastic laminate film has a metal foil. 5. A cartridge assembly for a discharge gun according to claim 1, wherein the cartridge is composed of two halves.