JP3007390U - Cartridge type sealant extrusion container - Google Patents

Abstract

(57) [Summary] [Purpose] A canopy made of a metal plate with a thermoplastic synthetic resin flanged outflow tube fitted in the center is fastened to the upper end opening of the paper cylinder, and the plan is set in the other end opening. In the cartridge type sealant extruding container in which the jar is fitted, the flange peripheral edge of the outflow pipe is stably and firmly coupled and fixed by the locking edge formed by pressing and deforming the annular groove extending from the canopy surface. [Structure] A canopy (2) made of a metal plate is fitted into a central opening of the canopy (2) and a flange (32) thereof is fitted into a recess (20) of the canopy (2). An annular groove (28) connecting the lower extension end and the lower extension end of the horizontal plate portion is pressed and deformed to the lower surface of the outer periphery of the flange (32) to form a locking edge (29).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cartridge-type sealant extruding container that contains a viscous paste sealant and is mounted on an extrusion gun to extrude and discharge the sealant. An object of the present invention is to have a metal plate canopy fitted around an outflow pipe made of a thermoplastic synthetic resin that is fastened and fixed, and to improve the fitting connection structure between the outflow pipe and the canopy made of metal plate. It is a thing.

[0002]

[Prior art]

 In a cartridge type sealant extruding container, a paper cylinder with a lining made of aluminum foil and a thermoplastic synthetic resin layer on the inner surface and a flanged outflow pipe made of thermoplastic synthetic resin were fitted around the upper end opening. It is well known that a canopy made of a metal plate is fixed by winding and a plunger is slidably fitted in an opening at a lower end.

In the conventional sealant extruding container as described above, the canopy made of a metal plate and the outflow pipe with a flange fitted in the central opening of the canopy are kept in close contact with each other, and normally the entire lower surface of the canopy is covered. In order to maintain the smoothness of the inner seal formed by laminating the expanded aluminum foil and the thermoplastic synthetic resin layer, a recess is formed in the peripheral edge of the opening of the canopy into which the flange of the outflow pipe can be fitted, and the center of A short cylinder protruding upward is formed in the opening, and an elastic engagement ridge that engages with the upper edge of the short cylinder is provided on the peripheral surface of the outflow pipe to prevent relative movement of both in the vertical direction. At the same time, apply multiple spot presses from the outer surface of the short tube at the center opening of the canopy to the peripheral surface of the outflow pipe, or from the upper surface of the recess to the flange surface of the outflow pipe, and also to bond between the flange and the recess. With the agent intervening, both phases Counter rotation is also prevented (see, for example, Japanese Utility Model Application Laid-Open No. 60-13337, Japanese Utility Model Laid-Open No. 5-54348, and Japanese Patent Application No. 5-23367).

[0004]

[Problems to be solved by the device]

 In the conventional sealant extruding container described above, the fitting connection structure of the metal plate canopy and the thermoplastic synthetic resin flanged outflow pipe has a structure that is provided on the outer peripheral surface of the outflow pipe in the center opening short tube of the canopy. Press fitting under elastic deformation of the compound ridge to engage the engaging ridge on the upper edge of the opening short cylinder and to keep the fitted state by bringing the flange of the outflow pipe into contact with the lower surface of the canopy. However, the holding force against the external force that presses the outflow pipe downward is weak, the relative separation of the both by the spot press from the outer surface of the opening short cylinder, and the rotation prevention property are not sufficient, and the Depending on the spot press, the rotation locking property is improved, but there is a problem that improvement of the disengagement prevention property cannot be expected, and it is hard to say that the effect of enhancing the fitting locking action by the adhesive is sufficient.

[0005]

[Means for Solving the Problems]

 The present invention encloses the flange of the outflow pipe formed on the canopy surface by connecting the metal plate canopy and the thermoplastic synthetic resin flanged outflow pipe fitted in the center of the cartridge type sealant extrusion container as described above. By the pressing deformation of the annular groove, a locking edge that presses against the outer peripheral lower surface of the flange is formed, so that a much stronger and more stable coupling structure than the conventional one is obtained.

That is, according to the present invention, a canopy made of a metal plate in which an outflow pipe made of a thermoplastic synthetic resin is fitted at the center is wound and fixed to the upper end opening of the paper cylinder, and the plunger is slid into the lower end opening. In the cartridge type sealant extruding container that is fitted as much as possible, the outflow pipe has a disc-shaped flange protruding toward the outer circumference of the lower end of the male screw cylinder, and the metal plate canopy is located above the flange where the outflow pipe fits. The protruding recessed portion and the peripheral wall of the recessed portion have an annular recessed groove formed by connecting an inner wall extending downward from the horizontal plate portion of the outer periphery and an outer wall bent downward from the horizontal plate portion, and the outflow With the flange of the pipe inserted and fitted in the recess of the canopy, the annular groove is pressed and bent inward to form a two-ply locking edge that is pressed against the bottom surface of the flange. Characterized by connecting and fixing the outflow pipe It is a cartridge type sealant extruding container.

The metal plate canopy used in the present invention is manufactured by punching and pressing a metal plate such as a tin plate, and has a gently convex curved edge for forming a winding on the peripheral edge of the disc and an outflow pipe penetrating in the center. An opening to be inserted therethrough, a concave portion into which the flange of the outflow pipe fits and surrounds the opening, and a peripheral wall of the concave portion extends downward from a horizontal plate portion continuous with a gently convex curved edge for forming winding tightening on the outer periphery. It has an annular groove that connects the inner wall and the outer wall bent downward from the horizontal plate. Under the condition that the outlet pipe with a flange at the lower end of the male screw cylinder made of thermoplastic synthetic resin is attached to the canopy so that the flange is recessed in the recessed part of the canopy and the male screw cylinder projects to the upper surface of the canopy. In addition, the annular groove of the canopy is pressed and bent inward by a two- or three-step press forming to form a two-ply locking edge pressed against the lower surface of the peripheral edge of the flange, whereby the peripheral edge of the flange is depressed. The canopy and the outflow pipe are firmly connected and fixed by being clamped and held between the canopy and the upper plate.

The metal plate canopy with the outflow pipe manufactured in advance as described above usually has an inner seal formed by laminating an aluminum foil and a thermoplastic synthetic resin layer on the entire lower surface thereof by heat sealing or high frequency heating. The entire surface or the peripheral edge of the paper, and the inner surface of which is lined with an aluminum foil and a thermoplastic synthetic resin lining and fastened to the upper end opening of the cylinder of the paper cylinder. A sealant extruding container can be obtained by fusing and sealing the thermoplastic synthetic resin layers of the inner seal, then filling the prescribed amount of sealant with the canopy face down, and inserting the plunger. is there.

The annular groove provided on the metal plate canopy is such that a two-ply locking edge formed by pressing and bending the outer peripheral lower surface of the flange normally projects inward from the peripheral edge of the flange by 1 to 3 mm. Therefore, it is desirable that the lower surface of the locking edge and the lower surface of the surrounding horizontal plate portion are flush with each other in order to obtain sufficient locking strength and to obtain the stable smoothness of the inner seal provided on the lower surface of the canopy. The shape and dimensions of the inner and outer walls of the annular groove provided on the canopy must conform to this.

The opening provided at the center of the canopy made of a metal plate has a diameter that allows it to come into close contact with the outer periphery of the base of the male pipe of the outflow pipe as much as possible. On the outer circumference of the male screw cylinder, an engaging ridge that elastically deforms to pass through the opening and engages with the upper edge of the short cylinder is provided so that the upper portion of the outflow pipe can be stably supported and the upper surface of the flange is fixed. It can also be protected. If necessary, an adhesive may be interposed between the recessed portion of the canopy and the upper surface of the flange of the outflow pipe to enhance airtightness.

In the present invention, the flange provided at one end of the outflow pipe is a tapered flange that descends and slopes toward the outer peripheral edge, and the upper surface plate of the recessed portion of the canopy has a taper shape conforming to this, and an annular groove provided in the canopy. By pressing and deforming, the canopy and the outflow pipe may be connected and fixed by forming a double-layered locking edge that rises and slopes toward the center pressed against the lower surface of the peripheral edge of the tapered flange of the outflow pipe. Provides a large space between the center of the inner seal that is stretched and fixed over the entire lower surface of the canopy and the lower surface of the tapered flange of the outflow pipe, and the volume change of the contained sealant caused by temperature change can be absorbed by the deformation of the inner seal. Especially when the temperature drops, it is possible to prevent the occurrence of internal decompression state due to poor sliding of the plunger, and therefore the accommodation sealant due to the ingress of outside air. It is possible to prevent the deterioration of. The tapered flange surface can also smooth the extrusion flow of the sealant.

If a large number of small recesses are formed in close contact with each other on the lower surface of the peripheral edge of a horizontal or tapered flange provided at one end of the outflow pipe, or if a large number of radial small recessed grooves are provided as a rough surface, It is possible to increase the locking force with respect to the rotation of the outflow pipe due to the pressure contact between the two locking edges described above.

[0013]

[Action]

 According to the present invention, the outflow pipe made of thermoplastic synthetic resin fitted in the central opening of the canopy made of a metal plate has the upper plate of the recessed portion of the canopy and the annular groove of the canopy itself at the outer peripheral edge of the flange. By being pressed and supported between the two overlapping locking edges that are pressed and bent, they are firmly connected and fixed around the entire circumference of the flange, and the canopy and the outflow pipe move relative to each other in the vertical and rotational directions. It does not occur, and the strength of the metal plate canopy itself can be improved by the two overlapping edges.

[0014]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a main part of a cartridge type sealant extruding container of the present invention in section, and FIG. 2 is an enlarged cross section of the main part in a state where a canopy and an outflow pipe are connected. In the figure, reference numeral 1 is a paper cylinder cylinder in which paper layers are laminated, an inner surface thereof has a lining 10 in which aluminum foil and a thermoplastic synthetic resin layer are sequentially laminated, and 2 is a canopy made of a metal plate such as a tin plate. At the center thereof, a short tubular opening 21 projects above a recess 20 surrounding it, and the recess 20 is bent at the lower end of the peripheral edge thereof through a locking edge 29 of a double stack that bends and projects inward. It is connected to the horizontal flat plate portion 25 and an outer winding-shaped winding tightening portion 4 which is bent slightly upward and is engaged with the upper opening edge of the paper cylinder 1.

Reference numeral 3 denotes an outflow pipe made of a thermoplastic synthetic resin made of polyethylene, which has a disc-shaped flange 32 protruding outward from the lower end of the male screw cylinder 31 and has the metal plate canopy described above. The male screw cylinder 31 penetrates through the short tubular opening 21 of the No. 2 and projects to the outside, the flange 32 fits into the recess 20 of the canopy 2, and the lower surface of the peripheral edge thereof is press-fitted to the two-layer locking edge 29 of the canopy 2. The two are fixed by and are locked so that they cannot move relative to each other. The lower surface of the two locking edges 29 and the lower surface of the horizontal plate portion 25 of the canopy 2 are flush with each other. 40 is in contact with the locking edge 29 of the canopy 2 and the lower surface of the horizontal plate portion 25, and is spread over the entire lower surface of the canopy 2 extending over the winding tightening portion 4 so as to be in close contact with the lining 10 of the paper cylinder 1 at the winding tightening portion 4. This is an inner seal in which polyethylene layers are formed on both sides of the aluminum foil fixed by the above method, whereby the inner side of the male screw cylinder 31 is sealed. A plunger 8 is slidably fitted in the lower end opening of the paper cylinder 1.

FIG. 2 shows a state in which the canopy 2 and the outflow pipe 3 are connected to each other before being fixed by being wound around the upper end opening of the paper cylinder 1, and the canopy 2 has a short cylindrical opening at the center thereof. The male screw cylinder 31 of the outflow pipe 3 is projectingly fitted to the portion 21, the flange 32 is fitted into the recess 20 of the canopy 2, and the inner wall 26 extending below the peripheral wall 23 of the recess and the winding of the outer circumference. The annular groove 28 shown by the dotted line, which is connected to the outer wall 27 bent downward from the inner horizontal plate portion 25 of the tightening curved edge 24, is pressed and deformed in the arrow direction, and the peripheral edge of the lower surface of the flange 32 of the outflow pipe 3 is deformed. A two-ply locking edge 29 is formed in pressure contact with the flange 32, and the flange 32 is pinched and connected by the upper surface plate 22 of the recess 20 and the locking edge 29. Therefore, the canopy 2 and the outflow pipe 3 move in the vertical direction. They are connected so that they are not separated from each other and do not rotate relative to each other.

The short tubular opening 21 provided at the center of the canopy 2 is an engagement provided on the peripheral surface near the base of the male screw cylinder 31 when the male screw cylinder 31 of the outflow pipe 3 is fitted. The ridge 33 passes through the inside of the opening portion 21 under elastic deformation, and is restored and protrudes and engages with the upper edge of the opening portion 21 to prevent the male screw cylinder 31 and the opening portion 21 from being separated from each other in the vertical direction and also to provide the sealing property. Although it is given, since the upper plate 22 of the concave portion 20 at the outer peripheral edge of the flange 32 and the locking edge 29 are strongly connected to each other by the clamping pressure, the opening 21 of the canopy 2 is formed into a short tubular shape. As a result, it is possible to omit the coupling structure that engages with the engaging projections 33 at the base of the outflow pipe 3.

FIG. 3 shows the same connection state between the canopy 2 and the outflow pipe 3 as in FIG. 2 in another embodiment. The outflow pipe 3 descends toward the outer peripheral edge at the lower end of the male screw cylinder 31. It has a sloping taper flange 32 ', the recess 20' of the canopy 2 also has a taper-shaped upper surface plate 22 'adapted to it, and the annular groove 28 is formed by pressing and deforming as shown by the arrow. The locking edge 29 'of the tapered flange 32' also comes into pressure contact with the lower surface of the peripheral edge of the tapered flange 32 'and is inclined upward inward, and an opening is formed by the upper peripheral edge of the tapered upper surface plate 22' of the recess 20 '. The upper peripheral edge is held between the engaging projection 33 provided on the base of the outflow pipe 3 and the base of the tapered flange 32 '.

[0019]

[Effect of device]

 As described above, according to the present invention, the canopy made of a metal plate which is wound and fixed to the upper end opening of the outflow pipe and the flanged outflow pipe which is fitted and fixed to the center of the canopy are fitted in the recessed portion of the canopy. On the lower surface of the outer circumference of the flange of the outflow pipe, a double-layered locking edge extending from the canopy is used to securely and firmly connect and fix the male pipe of the outflow pipe to the cone nozzle and the sealing lid. Even if it receives a strong turning force, the outflow pipe can be prevented from co-rotating, and the metal plate canopy is reinforced by the locking edge of two sheets stacked, and the deformation of the paper cylinder cylinder due to external force can also be prevented. A cartridge type sealant extruding container with excellent durability can be obtained such that the operation of the plunger can be maintained smoothly.

[Brief description of drawings]

FIG. 1 is a side view in which a part is cut away and a main part is shown as a cross section.

FIG. 2 is an enlarged cross-sectional view of a main part of a state in which a canopy and an outflow pipe are connected.

FIG. 3 is an enlarged cross-sectional view of a main part of another embodiment in which a canopy and an outflow pipe are connected to each other.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper cylinder 2 Canopy 3 Outflow pipe 4 Clamping fixing part 8 Plunger 10 Lining 20 Recessed part 21 Opening 22 Top plate 22 'Tapered top plate 23 Circumferential wall 25 Water flat plate part 26 Inner wall 27 Outer wall 28 Annular groove 29 29 Toe edge 31 Male screw cylinder 32 Flange 32 'Tapered flange 33 Engagement ridge 40 Inner seal

Claims (3)

[Scope of utility model registration request] A canopy (2) made of a metal plate having a thermoplastic synthetic resin outflow pipe (3) fitted in the center thereof is fastened to the upper end opening of the paper cylinder (1), and the inside of the lower end opening is fixed. In the cartridge type sealant extruding container in which the plunger (8) is slidably fitted in, the outflow pipe (3) has a disc-shaped flange (32) protruding toward the outer periphery of the lower end of the male screw cylinder (31), The metal plate canopy (2) has an upwardly projecting recess (2) into which the flange (32) of the outflow pipe (3) fits.
0) and a peripheral wall (23) of the recess (20) extending downward from a horizontal plate (25) on the outer periphery of the recess (20).
And an outer wall (27) bent downward from the horizontal plate (25)
And a flange (32) of the outflow pipe (3), which has an annular recessed groove (28) formed by connecting and being inserted into the recessed portion (20) of the canopy (2). Annular groove (2
8) The canopy (2) and the outflow pipe (3) are fixedly connected by pressing and bending inwardly to form a two-ply locking edge (29) pressed against the lower surface of the peripheral edge of the flange (32). Cartridge type sealant extruding container characterized by. 2. The canopy (2) wherein the outflow pipe (3) has a tapered flange (32 ') which is inclined downward toward the outer peripheral edge.
The recessed part (20 ') of the tapered flange (3
2 ') having a tapered upper plate (22'),
2. The cartridge according to claim 1, wherein the canopy (2) and the outflow pipe (3) are fixedly connected to each other by a two-ply locking edge (29 ') which rises and slopes toward the center pressed against the lower surface of the peripheral edge of the tapered flange (32'). Type sealant extrusion container. 3. The cartridge type sealant extrusion container according to claim 1 or 2, wherein the flange (32) or the tapered flange (32 ') of the outflow pipe (3) has a roughened bottom surface.