JPH06336254A - Discharge-gun cartridge and production thereof - Google Patents

Abstract

PURPOSE:To facilitate and secure handling, such as gripping a body, via a reinforcing member, prevent a leakage of contents, and facilitate and reduce the disposal of a film body that is crushed after use, by firmly fixing a reinforcing member to the bottom of the body made of the thin film body. CONSTITUTION:In a cartridge 4, a main part is composed of a body 41, a reinforcing member 42 and a cap body 43. The body 41 is made of a flexible film body 410, a bottom part 41b is disposed at the front end of a cylindrical part 41a, an insertion hole 41c is made in the center of the bottom part 41b, and the rear end is tied with a clasp 44. In the reinforcing member 42, a front wall part 422 is made at the front end of a short cylindrical part 421 whose diameter is smaller than that of the body 41, a discharge opening 423 is made in the center of the front wall part 422, and also a discharge hole 424 is made at the front end of the discharge opening 423. As to the cap member 43, a tapered cylindrical nozzle part 432 is made in a cap part 431 which spirally fits on the male screw 426 of the discharge opening 423. This facilitates the gripping of the body 42 and prevents contents from leaking out.

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 which accommodates a fluid substance such as an adhesive therein and is attached to a discharge gun.

[0002]

2. Description of the Related Art As a conventional cartridge of this type,
For example, there is one shown in FIG. 13 or FIG. A cartridge 1 shown in FIG. 13 has a movable bottom plate 12 slidably provided on the inner periphery of a rear end portion of a cylindrical main body 11 made of a relatively hard resin, and a discharge port having a discharge hole 11a at the front end portion of the main body 11. The portion 11b is formed, and the discharge hole 1 is formed in the discharge port portion 11b.
A lid 13 for closing 1a is screwed, and a fluid substance to be discharged from a discharge gun, for example, an adhesive is contained inside.

The cartridge 1 is used as shown in FIG. That is, the lid 13 is removed from the discharge port 11b, and the nozzle N is screwed and fixed. Then, it is inserted into the cylinder C of the discharge gun, and the movable bottom plate 12 is pushed forward by the piston P. As a result, the adhesive is discharged from the nozzle N.

Further, the cartridge 2 shown in FIG. 14 has a main body 21 formed by forming a thin flexible film into a cylindrical shape.
A clasp 22 made of a thick metal wire is attached to one end of the main body 21.
After sealing with, the inside of the main body 21 is filled with an adhesive, and then the other end of the main body 21 is sealed with a clasp 22.

This cartridge 2 has a clasp 22 on one side.
Is inserted into the cylinder of the discharge gun in a state where the end contacting with is cut, and the other end is pushed by the piston. As a result, the adhesive contained in the cartridge 2 is discharged from the discharge gun. Of course, in the case of this cartridge 2, a discharge gun with a nozzle is used.

[0006]

The conventional cartridges 1 and 2 have the following advantages and disadvantages, respectively. That is, the former cartridge 1 is easy to handle because the main body 11 has high rigidity. However, on the other hand, when discarding, even though the inside of the main body 11 is empty, it is discarded as it is. Therefore, there is a problem that a large amount of waste is produced.

On the other hand, in the case of the latter cartridge 2,
The main body 21 is crushed as the adhesive inside is used, and becomes a small lump when it is discarded. Therefore, the problem of waste can be reduced. However, if one end of the main body 21 is cut during use, the main body 21 loses rigidity. Therefore, not only is it difficult to handle,
When the main body 21 is gripped with a hand, there is a problem that the adhesive overflows from the main body 21 due to the pressure and adheres to the hand or the discharge gun.

Therefore, the applicant of this application has previously proposed the cartridge 3 for the discharge gun shown in FIG. 16 (see Japanese Patent Application No. 4-92269). In this cartridge 3, a rigid reinforcing member 32 is inserted and fixed to the inner periphery of one end of a tubular main body 31 made of a film body, while the other end is clamped after the main body 31 is filled with an adhesive. The reinforcing member 32 is sealed with a discharge port portion 32b having a discharge hole 32a. A lid (not shown) is screwed onto the discharge port portion 32b.
When used, it is used in the same manner as the cartridge 1.

However, it has been found that the cartridge 3 has the following problems. That is, as shown in FIG. 17, the main body 31 and the reinforcing member 32 are welded to each other by pressing the heated irons H and H onto the fitting portions of the two. In this case, if the inner diameter of the main body 31 is reinforced,
If it is excessively larger than the outer diameter of 2, the wrinkles 31a are formed on a part of the main body 31 as shown in the figure, and the wrinkles 31a are not welded. Therefore, the adhesive may leak from the place where the wrinkles 31a are formed. On the contrary, if the inner diameter of the main body 31 is smaller than the outer diameter of the reinforcing member 32, it becomes difficult to insert the reinforcing member 32 into the main body 31. Therefore, the inner diameter of the main body 31 and the reinforcing member 32
It is necessary to improve the accuracy of the outer diameter of, and therefore there is a problem that the manufacturing cost increases.

Further, by simply pressing the two irons H, H from one direction, the main body 31 and the reinforcing member 32 cannot be fixedly attached to each other, and the iron H is again pressed from the other direction orthogonal to the first pressing direction. , H must be pressed. Therefore, there is a problem that the welding work is troublesome.

The present invention has been made in view of the above circumstances, and it is possible to solve not only the problems of the conventional cartridge for the discharge gun but also the problems of the cartridge according to the previous application. An object of the present invention is to provide a cartridge for a discharge gun that can be solved.

[0012]

In order to achieve the above-mentioned object, a cartridge for a discharge gun according to the present invention has a tubular portion and a bottom portion formed at the tip portion of the tubular portion, and the whole is flexible. The reinforcing member includes a main body formed of a film body and a reinforcing member having a discharge port portion having a discharge hole on the front surface. The reinforcing member has a discharge port portion formed at the bottom of the main body. It is characterized in that the bottom surface of the main body is fixed to the front surface of the hole while penetrating from the inside.

Further, in order to manufacture the above-mentioned cartridge for the discharge gun, in the manufacturing method according to the present invention, one end is closed by folding back the film bodies at the central portion thereof and stacking them, and fixing both side parts which are superposed. , Forming a bag body with the other end open, forming an insertion hole at the closed one end of the bag body through which the discharge port of the reinforcing member is inserted, and inserting the reinforcing member into the bag body from its open portion. The front surface of the reinforcing member is fixed to the closed end of the bag body in a state where the discharge port portion penetrates the insertion hole.

[0014]

By setting the inner diameter of the main body to be slightly larger than the outer diameter of the reinforcing member, the reinforcing member can be easily inserted into the main body. Further, even if the inner diameter of the main body is larger than the outer diameter of the reinforcing member, the bottom portion is not wrinkled. Therefore, even if the bottom portion and the front surface of the reinforcing member are welded together, the fluid substance contained in the main body does not leak out between the main body and the reinforcing member.

[0015]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 12. FIG. 1 shows a cartridge 4 for a discharge gun according to the present invention. The cartridge 4 has a main body 41, a reinforcing member 42, and a lid 43 as main constituent elements.

The main body 41 is composed of a flexible film body 410, and has a cylindrical tubular portion 41a and a bottom portion 41b formed at the tip of the tubular portion 41a.
An insertion hole 41c is formed through the center of the bottom portion 41b. The rear end of the main body 41 is bundled and sealed at the center. In this embodiment, the rear end portion of the main body 41 is sealed by binding with the clasp 44 made of thick wire, but it may be sealed by welding.

The film 410 may have a single layer structure, but here, as shown in FIG. 3, a polyester film 411, a polyethylene film 412, an aluminum foil 413 and a polyethylene film are sequentially arranged from the inside to the outside. A four-layer structure formed by laminating 414 is adopted. Of course, another laminated structure may be used, and thin films of other materials may be laminated. However, as will be described later, when the main body 41 and the reinforcing member 42 are welded, the outermost thin film is made of a non-weldable material, and the innermost thin film is made of a weldable material.

The thickness of the film 410 is preferably 200 μm or less in consideration of its flexibility and the amount of waste when it is discarded. In this example, the four layers are sequentially processed from the outer side to the inner side by 12 μm,
The thickness is 15 μm, 7 μm, and 50 μm, and the thickness of the entire film body 410 is 84 μm.

The reinforcing member 42 is hard and has a film body 4.
It is made of a resin that can be welded to the innermost layer (polyethylene film in this embodiment) 414 among the layers that form 10 and has a strength that does not deform even if some external force acts. . The reinforcing member 42 includes a short cylindrical portion 421 having a diameter slightly smaller than the inner diameter of the main body 41 and the short cylindrical portion 4
21 has a front wall portion 422 formed at the front end portion of the discharge port 21 and a discharge port portion 423 formed to project at the center of the front wall portion 422. Part 42
3 and the discharge hole 424 penetrating the front wall portion 422 are opened. The discharge hole 424 is sealed by a seal 425 attached to the rear surface of the front wall portion 423. A male screw 426 is formed on the outer peripheral surface of the discharge port 423.

As shown in FIG. 2, the reinforcing member 42 is formed from the rear end opening of the main body 41, and the discharge port 424 is inserted into the insertion hole 4.
It is inserted until it penetrates 1c and the front surface of the front wall portion 422 hits the bottom portion 41b. The front surface of the front wall portion 422 is fixed to the bottom portion 41b. Body 41 and reinforcing member 42
When fixing and, they may be bonded together, but here they are welded. The welding can be performed, for example, by using a ring-shaped trowel and heating the trowel to press it against the outer surface of the bottom portion 41b (see FIG. 10).

The lid 43 is made of translucent and relatively hard resin, and has a lid 431 screwed into the male screw 425 and a tapered cylindrical shape integrally formed with the lid 431. And a nozzle portion 432. Nozzle part 43
2 has its tip closed. Therefore, when the lid portion 431 is screwed into the male screw portion 426 and tightened, the discharge hole 424 is closed. However, the tip portion of the nozzle portion 432 is cut and opened at the time of actual use. In this case, a plurality of annular cut grooves 433 are formed apart from each other on the outer periphery of the tip end portion of the nozzle portion 432 so that cutting can be performed easily and the opening diameter can be appropriately selected. .

In the cartridge 4 having the above-described structure, the main body 41 is formed of the flexible film body 410, but since the reinforcing member 42 having rigidity is provided at the tip of the main body 31, the reinforcing member 42 is provided. Body 31 provided with
By holding the outer circumference of the cartridge by hand, the cartridge 3 can be easily handled. Also, if you bring it like that,
Since the reinforcing member 42 receives the pressure applied from the hand to the main body 41, the main body 41 does not collapse. Therefore, even after the seal 425 and the nozzle portion 432 are opened, the adhesive contained in the main body 41 is not removed from the nozzle portion 43.
Never overflow from 2.

Further, since the main body 41 is formed of the thin film body 410, it is crushed as it is used and becomes a small lump after use. Therefore, the amount of waste can be reduced, and the transportation and processing can be easily performed.

Further, the bottom portion 4 of the main body 41 is attached to the reinforcing member 42.
When fixing 1b, even if the inner diameter of the main body 41 is larger than the outer diameter of the short tubular portion 423 of the reinforcing member 42, the bottom portion 41b
There are no wrinkles. Therefore, the bottom portion 41b and the front wall portion 422 can be fixed in a state of being in close contact with each other over the entire circumference. Therefore, it is possible to reliably prevent the adhesive from leaking between them.

When welding the main body 41 and the reinforcing member 42, it is sufficient to press the ring-shaped trowel once, as described above. Therefore, the labor required for welding can be reduced.

When welding the main body 41 and the reinforcing member 42, the main body 41 should not be welded to the iron. Therefore, it is necessary to change the outer and inner materials of the main body 41, and the film body forming the main body 41 must have a multi-layer structure. However, the main body 41 is a multi-layered film body.
It is very difficult to integrally form the tubular portion 41a and the bottom portion 41b. Therefore, the inventor of this application has diligently studied and invented a manufacturing method capable of easily manufacturing the cartridge according to the present invention.

Next, a manufacturing method capable of easily manufacturing the cartridge according to the present invention will be described with reference to FIGS. The cartridge manufactured by the manufacturing method described below is different from the cartridge 4 only in the main body, and other components are the same as the cartridge 4. Therefore, the same parts are designated by the same reference numerals.

When manufacturing the cartridge, first, the main body, the reinforcing member 42 and the lid 43 are manufactured. In this case, the reinforcing member 42 and the lid 43 can be manufactured by a known molding method such as injection molding. The main body is manufactured as follows.

That is, as shown in FIG. 4, the elongated film body 410 is folded back at the central portion in the longitudinal direction and overlapped. Next, as shown in FIG. 5, both side portions (hatched portions) of the overlapped portions are fixed by means of welding or the like (hereinafter, referred to as welding portion 52). As a result, the main body 51 having one end on the folded side closed and the other end open is created. Then, the insertion hole 51c is formed at one end of the main body 51. In this case, since the film bodies 410 are superposed on each other, the circular insertion hole 51c can be formed by cutting out in a semicircular shape.

The main body 51 can also be manufactured by using a wide film body 410 as shown in FIG. In this case, the film body 410 is folded back and overlapped, and both side portions thereof are welded, and a plurality of intermediate portions are welded along both side portions. At this time, of course, the width of the non-welded portion should be the same as the width W. Further, the width of the intermediate welded portion 53 is twice the width of the welded portions 52 on both sides. After welding, the central portion of each welded portion 53 is cut. By doing so, a large number of main bodies 51 can be simultaneously prepared.

Next, as shown in FIG. 7, the reinforcing member 42 is inserted into the main body 51 from its opening. in this case,
As shown in FIG. 8, when the tip of the mandrel M is fitted into the short tubular portion 421 of the reinforcing member 42 and the mandrel M is held and inserted, the insertion can be easily performed. If the discharge hole 424 of the reinforcing member 42 is sealed by the sealing material 425 (see FIG. 1), the hole Ma of the mandrel M is formed.
It is possible to prevent the reinforcing member 42 from falling off the mandrel M by vacuum suction from the.

When the reinforcing member 42 is inserted into the main body 51 and the reinforcing member 42 reaches a position at a distance equal to the radius of the short tubular portion 421 of the reinforcing member 42 from the folded portion, it cannot be inserted any more. . In this state, as shown in FIGS. 9 and 10, the folded-back portion (shown by an imaginary line in FIG. 9) is located so as to pass through the center of the outer diameter of the reinforcing member 42, and the vicinity thereof is in front of the reinforcing member 42. It contacts the front surface of the wall portion 422 and forms the bottom portion 51b. In addition, a portion facing the open side from a portion separated from the folded-back portion by a distance equal to the radius of the reinforcing member 42 forms the tubular portion 51a. A portion near the welded portion 52 projects from the reinforcing member 42 to form an ear portion 51d.

Next, as shown in FIG. 10, the reinforcing member 42
Of the trowel H'having an outer diameter substantially the same as the outer diameter, the inner diameter of which is substantially the same as that of the insertion hole 51c, and the recess h which is deeper than the protruding height of the depth discharge port 423. , Its front end surface is pressed against the bottom portion 51b so that the bottom portion 51b is reinforced.
It is welded to the front surface of the second front wall portion 422.

The ear portion 51d is bent at the base end portion thereof and placed along the tubular portion 51a. Alternatively, the irons H and H as shown in FIG. 17 may be pressed against the ear portion 51d after being aligned. In this way, the inner peripheral surface of the tubular portion 51a can be welded to the short tubular portion 421 of the reinforcing member 42, and the innermost layers 414 of the film body 410 forming the ear portions 51d are fixed to each other, It is possible to prevent the ear portion 51d from being bulky.

The present invention is not limited to the above embodiments, but can be modified as appropriate without departing from the scope of the invention. For example, in the above example,
Although the front wall portion 422 of the reinforcing member 42 is circular, it may be oval, square, rectangular, or a shape in which both sides of a circle are linearly cut out as shown in FIG. 11. Further, although the short tubular portion 421 is formed on the reinforcing member 42, it may not be formed.

If two cartridges 4 and 4 are mounted on a jig 60 as shown in FIG. 12, it can be used as a two-liquid mixing type cartridge. That is,
The jig 60 is formed with a nozzle portion 62 having a nozzle hole 61 on the front surface thereof, and has screw holes 63, 63 for screwing and fixing the respective discharge port portions 423 of the two cartridges 4, 4 on the rear surface portion thereof. Formed, and the screw holes 63,
63 communicate with each other through the communication passage 64 and also communicate with the nozzle hole 61. When this jig is used, the cartridges 4, 4 are screwed and fixed in the screw holes 63, 63, and the nozzle portion 62 is provided with a cylindrical nozzle (not shown) having a fin for mixing therein. Mounting. When the adhesive is ejected from the cartridges 4 and 4, the adhesive passes through the communication passage 64 and the nozzle hole 61, is mixed in the nozzle, and is ejected from there.

[0037]

As described above, according to the cartridge for the discharge gun of the present invention, the main body is formed from the thin film body, and the reinforcing member is fixed to the bottom portion of the main body. Not only can the problem be solved, but the contents such as adhesive can be prevented from leaking out between the main body and the reinforcing member, and the main body and the reinforcing member can be easily welded together. It is possible to obtain effects such as being able to. Further, according to the manufacturing method of the present invention, the cartridge can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a partially omitted embodiment of a discharge gun cartridge according to the present invention.

FIG. 2 is a diagram showing a procedure for inserting a reinforcing member into a main body.

FIG. 3 is a diagram showing a structure of a film body.

FIG. 4 is a perspective view showing a folding step in manufacturing a main body.

FIG. 5 is a view showing the main body in a state where both sides are welded after the folding step.

FIG. 6 is a diagram showing another example of manufacturing a main body.

FIG. 7 is a diagram showing a procedure for inserting a reinforcing member into the main body.

FIG. 8 is a partially omitted cross-sectional view showing a state in which the reinforcing member is fitted to the tip portion of the mandrel.

FIG. 9 is a view of a main body having a reinforcing member inserted therein as seen from a folded-back portion side.

FIG. 10 is an X in FIG. 9 showing a welding process of the main body and the reinforcing member.
FIG. 6 is a cross-sectional view taken along the arrow −X.

FIG. 11 is a plan view showing another embodiment of the reinforcing member.

FIG. 12 shows an example of a jig used when two cartridges are used as a two-liquid mixing type cartridge, and FIG. 12 (A) is a plan view thereof.
12B is a bottom view thereof, and FIG. 12C is C of FIG. 12A.
FIG. 6 is a cross-sectional view taken along the arrow C.

FIG. 13 is a side sectional view showing an example of a conventional ejection gun cartridge.

FIG. 14 is a side view showing another example of a conventional ejection gun cartridge.

FIG. 15 is a cross-sectional view showing a state in which the cartridge shown in FIG. 13 is attached to the cylinder of the discharge gun.

FIG. 16 is an exploded perspective view showing a cartridge for a discharge gun according to the previous application.

17 is an enlarged plan view showing a state in which the main body of the cartridge shown in FIG. 16 and a reinforcing member are welded to each other.

[Explanation of symbols]

 4 Cartridge 41 Main Body 41a Cylinder 41b Bottom 41c Insertion Hole 42 Reinforcing Member 422 Front Wall 423 Discharge Port 51 Main Body 51a Tube 51b Bottom 51c Insertion Hole

Claims (2)

[Claims] 1. A main body, which has a tubular portion and a bottom portion formed at a tip portion of the tubular portion, and which is entirely formed of a flexible film body, and a discharge port portion having a discharge hole on a front surface is formed to project. A reinforcing member, wherein the reinforcing member is such that the front face thereof is fixed to the bottom portion of the main body in a state in which the discharge port portion penetrates the insertion hole formed in the bottom portion of the main body from the inside. Characteristic discharge gun cartridge. 2. When manufacturing the cartridge for a discharge gun according to claim 1, one end is closed and the other end is opened by folding back and stacking the film bodies at their central parts and fixing both side parts which are superposed. Forming a bag body, and forming an insertion hole at the closed one end of the bag body through which the discharge port of the reinforcing member is inserted, and inserting the reinforcing member into the bag body from its opening, A method for manufacturing a cartridge for a discharge gun, wherein the front surface of the reinforcing member is fixed to the closed end portion of the bag body in a state where the portion penetrates the insertion hole.