JPH0672880U - Cartridge type sealant extrusion container - Google Patents

Abstract

(57) [Abstract] [Purpose] A canopy made of a metal plate with an outflow tube made of synthetic resin fitted and fixed at the center is fastened to the opening end of the paper cylinder, and the plunger is inserted into the opening at the other end. In the cartridge type sealant extruding container, the outflow pipe and the canopy are firmly fitted and coupled. [Structure] A rising peripheral wall 22 of a central opening 23 of a canopy 2 made of a metal plate is provided between an engaging projection 36 on an outer periphery of a projecting tubular portion 31 of an outflow pipe 3 made of a thermoplastic synthetic resin and a lower flange 32. And the locking projection 25 formed by the spot press is fitted from the upper surface of the canopy 2 which is in contact with the upper surface of the flange 32 to prevent the both from separating and rotating relative to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention accommodates and seals a viscous paste sealant, opens the opening at the time of use, and attaches it to an extrusion gun that allows the plunger to be pushed and the contents to flow to a desired location. More specifically, the present invention relates to a cartridge type sealant extruding container. The container is composed of a metal plate canopy fitted with a paper cylinder barrel and an outflow pipe made of a thermoplastic synthetic resin, which is fastened to an opening at one end thereof. It is an object of the present invention to improve a cartridge type sealant extruding container including a plunger fitted in the opening at the other end.

[0002]

[Prior art]

 In a cartridge-type sealant extruding container, a paper cylinder with an aluminum foil and a lining made of a thermoplastic synthetic resin layer on its inner surface is used as its body, and a metal with a thermoplastic synthetic resin outflow pipe fitted at one end opening. It is well known that a plate canopy is fixed by winding and a plunger is inserted into the opening at the other end of the paper cylinder. As the outflow pipe made of the synthetic resin, a flange is provided at the lower end of the male screw cylinder. A rising peripheral wall is provided on the periphery of the opening at the center of the canopy made of a metal plate into which the outflow pipe is fitted, so that a stable fit state is obtained, and the metal plate is locally pressed by the spot press from the outer surface of the rising peripheral wall. It is also disclosed in Japanese Utility Model Application Laid-Open No. 60-13337 that the male screw cylinder base portion is engaged with the male screw cylinder base to prevent them from separating and rotating relative to each other.

[0003]

[Problems to be solved by the device]

 The fitting connection structure of the metal plate canopy and the synthetic resin outflow pipe in the known sealant extruding container is such that after the outflow pipe is fitted into the central opening of the canopy, a spot press is performed from the outside of the rising peripheral wall of the opening. It requires two steps to be performed, and the rotation locking action by this is insufficient because it is performed at the minimum turning radius position, and the spot press pressure easily causes the deformation of the male screw cylinder, and therefore the combination of the spot pressure and the male screw cylinder is performed. Rotational resistance when the resin cone nozzle is screwed in and out becomes large, and the cone nozzle and the outflow pipe often rotate together and the seal between the metal plate canopy and the outflow pipe is broken. However, there is a problem that the cone nozzle cannot be replaced.

[0004]

[Means for Solving the Problems]

 The present invention improves the fitting structure of the synthetic resin outflow pipe that is inserted into the central opening of the metal plate canopy that is fastened to the upper end opening of the paper cylinder body, thereby improving the vertical direction of the outflow pipe with respect to the canopy. By preventing movement and rotation in the direction, a stable fitting connection that does not cause the above-mentioned problems of the related art is obtained. That is, according to the present invention, a canopy made of a metal plate having a synthetic resin outflow tube fitted and fixed at the center is fastened to the upper end opening of the paper cylinder, and the plunger is slidably fitted into the lower end opening. In the cartridge type sealant extruding container to be inserted, the central opening provided in the center of the canopy has a short cylindrical rising peripheral wall, and the outflow pipe is a flange protruding in the outer peripheral direction of the lower end of the protruding cylinder and the upper surface of the flange. From the bottom surface of the canopy of the outflow pipe, which has a slightly protruding annular engaging projection on the peripheral surface of the projecting tubular portion at the same interval as the height of the rising peripheral wall, and which is press-fitted to the central opening of the canopy. The locking projection formed by the spot press was recessed from the upper surface of the canopy to the upper surface of the flange that abutted against the flange to prevent relative rotation between the canopy and the outflow pipe, and locked so that it could not be removed. Cartridge type sealant extrusion characterized by Vessels and it is an gist.

Further, according to the present invention, the canopy surface on which the flange of the outflow pipe fitted in the central opening of the canopy abuts is pushed upward by the thickness of the flange so that the lower surface of the flange and the surrounding area of the flange are pushed out. It also includes that the lower surface of the canopy is made substantially flush and an inner seal is attached to the entire lower surface to seal the outlet.

In the above description, the rising peripheral wall of the central opening provided at the center of the metal plate canopy has an inner diameter at the upper end substantially equal to the outer diameter of the protruding cylindrical portion of the outflow pipe, and an inner diameter at the lower end opening of the outflow pipe. Has a tapered hole with an enlarged inner diameter that slightly protrudes on the outer peripheral surface near the base end of the protruding cylinder part, and has an enlarged inner diameter so that the engaging projection can be fitted. The distance from the engaging projections provided on the adjacent outer peripheral surface shall be the same as the height of the inner surface of the rising peripheral wall, and when inserting the protruding tubular portion of the outflow pipe from below the central opening of the canopy, The engaging ridge passes through the upper opening of the rising peripheral wall under elastic deformation, and the rising peripheral wall of the central opening of the canopy is formed between the flange at the lower end of the outflow pipe and the engaging ridge on the outer periphery of the protruding cylinder. The outflow pipe is held so as not to be pinched and to move in the vertical direction.

When a male screw is formed on the outer periphery of the protruding tubular portion of the outflow pipe, the outer diameter of the male screw thread portion may be slightly larger than the inner diameter of the upper end of the rising peripheral wall of the central opening of the canopy, Further, even if the engaging ridge of the protruding tube portion of the outflow pipe is the same as or slightly larger than the male thread diameter, it can be fitted by the elastic deformation of the synthetic resin.

The forcible fitting between the canopy and the outflow pipe is performed by sandwiching a lower press plate that abuts the lower surface of the lower end flange of the outflow pipe and an upper press plate that abuts the outer peripheral upper surface of the central opening of the canopy. Since the upper surface of the press plate is provided with a projection for spot press for forming a locking projection, the canopy and the outflow pipe are forcibly fitted, and at the same time, the protrusion from the canopy plate surface onto the flange top face of the outflow pipe is performed. The stop projection can be fitted, and the relative rotation of the canopy and the outflow pipe can be locked without increasing the number of steps. In addition, it is desirable that the above-mentioned locking projections are provided at three or four positions by equally dividing the circumference of the flange of the outflow pipe.

As described above, a stable fitting connection is made between the metal plate canopy and the synthetic resin outflow pipe without causing relative movement in the vertical and rotational directions. When accommodating a sealant such as urethane that requires a high degree of gas-liquid barrier, an inner seal made of aluminum foil with a thermoplastic synthetic resin layer on both sides is attached over the entire canopy fitted with the outflow pipe. In this case, the canopy portion that the flange of the outflow pipe fitted in the central opening of the canopy abuts is pushed upward by the thickness of the flange, and the lower surface of the flange and the lower surface of the canopy around it are attached. It is desirable to be level.

[0010]

[Action]

 According to the present invention, the synthetic resin flanged outflow pipe is joined to the center of the metal plate canopy in a stable fitting and fixed state without separation and relative rotation. Thus, the sealed state can be maintained durable.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a cross section of a main part with a part cut away, and FIG. 2 is a perspective view, wherein 1 is a paper cylinder body provided with a lining having an aluminum foil 12 and a polyethylene layer 13 on an inner surface, Reference numeral 2 denotes a metal plate canopy fixed to the upper end opening of the paper cylinder 1 by a metal plate, and has a central opening 23 having a rising peripheral wall 22 at the center thereof. Reference numeral 3 is an outflow pipe having a flange 32 protruding outward at the lower end of a protruding tube portion 31 obtained by injection molding of a thermoplastic synthetic resin such as high density polyethylene. Is provided with a male screw portion 35 to which the nozzle 9 is screwed, and an engaging protrusion 36 that is slightly protruded from the male screw thread around the peripheral surface is provided on the lower portion thereof.

Before the canopy 2 is fixed to the cylinder of the paper cylinder, the outflow pipe 3 is forcibly press-fitted into the central opening 23 by a pressing machine in advance so that the flange 32 of the outflow pipe 3 is opened. 23 is brought into contact with the lower surface of the recessed canopy 2 around 23, and the engaging projection 36 of the projecting tubular portion 31 is projectively engaged with the upper end edge of the rising peripheral wall 22 of the central opening 23, and at the same time, the canopy 2 is pressed by the press upper mold. The outflow pipe 3 is fitted and fixed to the canopy 2 by forming a locking projection 25 that locally press-fits the metal plate surface of the canopy 2 onto the surface of the flange 32 by spot pressing from the upper surface of the canopy 2.

The inner seal 4 provided with the thermoplastic synthetic resin layers 41 and 43 on both sides of the aluminum foil 42 is attached to the entire lower surface of the canopy 2 to which the outflow pipe 3 is fitted and coupled as described above, and the outlet is provided. After the lower end of 30 is sealed, it is tightly wound around the upper end opening of the paper cylinder 1, and then the wound portion is fusion-sealed by heat-sealing means such as high-frequency heating. Then, with the lower end opening of the paper tube cylinder 1 facing upward, after filling the required sealant agent, the plunger 8 is inserted.

In the above-described embodiment, the outflow pipe 3 fitted and fixed to the canopy 2 has the protruding cylindrical portion 31 having the flange 32 at the lower end and the outflow port penetrating, but FIGS. It is sectional drawing of the principal part which shows the case where the modified example of the outflow pipe 3 is used, and attaches | subjects and demonstrates the same code | symbol as the same functional part as the previous Example. In FIG. 3, the outflow pipe 3 has a blind lid portion 38 that seals the outflow port 30 on the upper end surface of the protruding cylindrical portion 31 having the male screw portion 35. Therefore, when accommodating a sealant that does not require a high base liquid blocking property, the inner seal 4 that seals the lower end opening of the outflow port 30 is not required, and when used, cut at the XX position to cut the blind lid. After removing 38 and opening the outlet 30, the cone nozzle 9 is attached and used.

In FIG. 4, the outflow pipe 3 ′ has a cone nozzle 39 as its protruding cylinder and a flange 2 at the lower end thereof. Therefore, the tip of the cone nozzle 39 is cut off and used. FIG. 5 shows a projecting cylindrical portion 31 having a male screw portion 35 provided on the base portion of the cone nozzle 39 and a flange 2 provided at the lower end thereof. The tip of the cone nozzle 39 is cut off, or the cone nozzle 39 is cut off. All or part of 39 is cut off so that a cone nozzle having another desired shape can be screwed to the male screw portion 35 and used.

In any of the modifications of the outflow pipe of FIGS. 3 to 5, the central opening of the canopy 2 is provided between the engaging flange 36 and the lower flange 2 provided on the outer periphery of the protruding tubular portion of the outflow pipe. The outflow pipe 3 is stably and firmly coupled by sandwiching the rising peripheral wall 22 and fitting the locking projection 25 by spot-pressing the canopy 2 surface to the flange 32 surface. In any case, when accommodating a silicone, acrylic, butyl, or oil-based sealant that does not require a high degree of gas-liquid barrier property, the inner seal 4 that seals the lower end opening of the outlet is not always necessary. do not do.

[0017]

[Effect of device]

 As described above, according to the present invention, the outflow pipe with the flange made of the thermoplastic synthetic resin is detached from the central opening of the metal plate canopy that is tightly wound and fixed on the paper tube cylinder, and the relative rotation is performed. Since it can be securely and securely fitted and fitted, a cartridge type sealant extruding container that can maintain a hermetically sealed state for a long time can be obtained, and at the time of its manufacture, a metal plate canopy and a synthetic resin outflow pipe are closely fitted together. The rotation can be stopped easily by the stop projections, and the manufacturing process can be streamlined.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view showing an upper portion of a container.

FIG. 3 is a sectional view of an essential part of a container using a modified outflow pipe.

FIG. 4 is a cross-sectional view of a main part of a container using another modified outflow pipe.

FIG. 5 is a cross-sectional view of essential parts of a container using another different outflow pipe modification.

[Explanation of symbols]

 1 Paper cylinder 2 Canopy 3 Outflow pipe 4 Inner seal 8 Plunger 9 Cone nozzle 11 Lining 22 Rising peripheral wall 25 Locking protrusion 31 Protruding cylinder part 32 Flange 35 Male screw part 36 Engaging protrusion

Claims (2)

[Scope of utility model registration request] 1. A canopy (2) made of a metal plate, in which an outflow pipe (3) made of a thermoplastic synthetic resin is fitted and fixed at the center, is fastened and fixed to the upper end opening of the paper cylinder (1), and the lower end opening is fixed. In a cartridge type sealant extruding container into which a plunger (8) is slidably fitted, a central opening (23) provided at the center of a canopy (2) has a short cylindrical rising peripheral wall (22). The outflow pipe (3) protrudes from the upper surface of the flange (32) and the flange (32) protruding in the outer peripheral direction of the lower end of the protruding cylinder portion (31) at the same interval as the height of the inner surface of the rising peripheral wall (22). An outflow is formed by providing a slightly projecting annular engaging protrusion (36) on the outer peripheral surface of the base of the tubular portion (31), and press-fitting it into the central opening (23) of the canopy (2). Of the canopy (2) against the upper surface of the flange (32) that abuts the lower surface of the canopy (2) of the tube (3). At least one or more locking projections (25) formed by spot press from the upper surface are recessed to prevent relative rotation between the canopy (2) and the outflow pipe (3) and locked irremovably. Cartridge type sealant extruding container characterized by. 2. The surface of the canopy (2) with which the flange (32) of the outflow pipe (3) fitted in the central opening (23) of the canopy (2) abuts upward by the thickness of the flange (32). To the bottom of the flange (32) and its surrounding canopy (2)
The cartridge type sealant extruding container according to claim 1, wherein the lower surface of the sealant is a substantially flat surface, and an inner seal (4) is adhered to the entire lower surface to seal the outflow port (20).