JP2019043571A - Metal can with clear window and its manufacturing method - Google Patents

Abstract

To provide a metal can with a clear window in which the clear window for the metal can can be easily produced and is hard to come off after production, and a manufacturing method of the same.SOLUTION: Provided is a metal can with a clear window in which: an opening 11 is formed at a side face 10 of a metal can 1; a protrusion 22 which is larger than the shape of the opening 11 and protrudes along the opening 11, a contact part 31 in which an outside transparent member 2 having a claw 23 is inserted into the opening 11 from the outside of the can, which is larger than the shape of the opening 11 and contacts with the protrusion 22, and an inside transparent member 3 which has a recess 32 into which the claw 23 is fitted are joined to the outside transparent member 2 from the inside of the can; and the protrusion 22 of the outside transparent member 2 and the contact part 31 of the inside transparent member 3 are subjected to ultrasonic adhesion. Also provided is a manufacturing method of the same.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a transparent windowed metal can, and more particularly to a transparent windowed metal can to which a transparent window can be attached easily and firmly and a method of manufacturing the same.

[Prior art]
With regard to the transparent windows of conventional tin cans, there are those described in the following prior art documents.
[Related Art]
Related prior art documents are: Japanese Utility Model Application Publication No. Sho 61-180938 "Tin can with perspective window" (Patent Document 1), Japanese Utility Model Publication No. 61-18039 "Tin can with perspective window" (patent document 2), Japanese Patent Publication No. Sho 62-51822 "Method for producing transparent window in can container".

Patent Document 1 describes a configuration in which an opening serving as a window is formed in a tin can, and transparent members are stacked in pairs from the inside and the outside and heat-pressed.
In addition, Patent Document 2 describes a configuration in which an opening serving as a window is formed in a tin can, a transparent member is fitted into the window from the outside, and a part of the transparent member is deformed by heat compression to be fixed to the tin can. ing.
In addition, Patent Document 3 describes a configuration in which an opening serving as a window in a flat state is formed, and a transparent member is fitted into the window from the inside to curve a can and the window.

Japanese Utility Model Publication No. 61-180938 Japanese Utility Model Application Publication No. 61-180939 Japanese Patent Publication No. 62-51822

  However, the transparent window of the conventional tin can described above has a problem that it is not easy to manufacture, and it is not easy to remove easily after formation.

  The patent documents 1-3 do not describe the structure and manufacturing method which can manufacture easily the transparent window of a tin can, and do not remove easily.

  The present invention has been made in view of the above situation, and it is an object of the present invention to provide a metal can with transparent window which can be easily manufactured and which can not be easily removed after manufacture, and a method of manufacturing the same. Do.

  The present invention for solving the problems of the prior art is a metal can with a transparent window, which has an opening serving as a window on the side, and has a projection larger than the shape of the opening and protruding along the opening. An outer transparent member having an outer transparent member having a claw portion for temporary fastening, a contact portion which is larger than the shape of the opening and comes in contact with the projecting portion, and an inner transparent member having a recess into which the claw portion is fitted; The inner transparent member is inserted into the opening from the outside of the can, and the inner transparent member is joined to the outer transparent member from the inside of the can, and the projection of the outer transparent member and the contact portion of the inner transparent member are bonded.

  The present invention is characterized in that, in the metal can with transparent window, the metal can is a tin can.

  The present invention is characterized in that, in the metal can with a transparent window, a plurality of claws of the outer transparent member are formed, and a plurality of corresponding concave portions are also formed.

  The present invention relates to a method of manufacturing a transparent windowed metal can, wherein an opening serving as a window is formed on the side surface of a metal can, and a protrusion larger than the shape of the opening and protruding along the opening An outer transparent member having a claw for stopping is inserted into the opening from the outside of the can, and the inner transparent member having a contact portion larger than the shape of the opening and in contact with the projection and a recess into which the claw is fitted And bonding the projection of the outer transparent member and the contact portion of the inner transparent member with ultrasonic waves.

  5. The method according to claim 4, wherein the metal can is a tin can in the method of manufacturing the metal can with transparent window.

  According to the present invention, a contact which is larger than the shape of the opening and which has a protrusion protruding along the opening and an outer transparent member having a hook for temporary fastening and a shape larger than the shape of the opening and which contacts the protrusion The outer transparent member is inserted into the opening from the outside of the can and the inner transparent member is joined to the outer transparent member from the inside of the can; Since the transparent windowed metal can is formed by bonding the projecting portion of the member and the contact portion of the inner transparent member, the transparent window of the metal can can be easily manufactured, and it can be made difficult to remove easily after manufacture. effective.

It is the schematic of this can. It is cross-sectional explanatory drawing of a window part. It is cross-sectional explanatory drawing which isolate | separated each structure part of the window part. It is the schematic which shows the relationship between the claw part of a window part, and a recessed part. It is cross-sectional explanatory drawing which shows the connection part of an outer side transparent member and an inner side transparent member.

Embodiments of the present invention will be described with reference to the drawings.
[Overview of the embodiment]
A transparent windowed metal can and a method of manufacturing the same according to an embodiment of the present invention form an opening serving as a window on the side surface of a metal can and have a shape larger than the shape of the opening and project along the opening The outer transparent member having the projecting part and the claw part for temporary fastening is inserted into the opening from the outside of the can, and the contact part which is larger than the shape of the opening and contacts the projecting part, and the concave part into which the claw is inserted The inner transparent member is joined to the outer transparent member from the inside of the can, and the projection of the outer transparent member and the contact portion of the inner transparent member are bonded with ultrasonic waves, so that the claw portion is inserted into the recess The outer transparent member and the inner transparent member are temporarily fixed, and the adhesion between the projection and the contact portion by the subsequent ultrasonic wave integrates the outer transparent member and the inner transparent member, and the window is easily detached from the can main body It will be gone.

[This can: Figures 1 to 3]
A transparent windowed metal can (main can) according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view of a main can, FIG. 2 is a cross-sectional explanatory view of a window, and FIG. 3 is a cross-sectional explanatory view in which each component of the window is separated. In FIGS. 2 and 3, the cross section of the window in the vertical direction of the can is shown.

  As shown in FIGS. 1 to 3, the present can has an opening 11 which becomes a window 5 along the curved shape on the side surface 10 of a metal can 1 of a cylindrical (cylindrical) shape such as tinplate. The outer transparent member 2 is fixed to the opening 11 from the outside and the inner transparent member 3 from the inside to sandwich the peripheral portion of the opening 11.

  Therefore, both the outer transparent member 2 and the inner transparent member 3 are larger (larger area) than the opening 11. Therefore, the outer transparent member 2 does not enter the inside of the metal can 1 from the opening 11, and the inner transparent member 3 does not go out of the opening 11 to the outside of the metal can 1.

[Each part of this can]
Next, each part of the main can will be specifically described.
[This metal can 1: Fig. 1]
This metal can 1 is a metal can such as a cylindrical tin plate as shown in FIG. 1 and is composed of a side surface 10 and a bottom surface (not shown), and a window portion 5 is formed on the side surface 10 A lid 4 is provided on the.
In FIG. 1, the can has a cylindrical shape, but may have a quadrangular prism shape, a polygonal shape, or a spherical shape, or may have a three-dimensional shape simulating a complex character.

Further, although the side face 10 and the bottom face in FIG. 1 are integrated, the lid 4 is removable, and can be attached by being pushed down from above, and can be detached by being pulled up from below.
Although the shape of the window 5 formed in the opening 11 is circular, it may be a polygon or a complicated shape combining a plurality of circles according to the shape of the opening 11. And the window part 5 is curving according to the side shape of the column-shaped main metal can 1.

[Outside transparent member 2: FIGS. 2 and 3]
As the outer transparent member 2 is shown to FIG.2, 3, the main body 20 is wider than the opening part 11, and is equipped with the collar part 21, the protrusion part 22, and the nail | claw part (nail part) 23. As shown in FIG.
The outer transparent member 2 is formed of a transparent ABS resin (acrylonitrile (Acrylonitrile), butadiene (Butadiene), styrene (Styrene) copolymer synthetic resin) or the like. The color may be colorless and transparent but may be colored and transparent.

The flange portion 21 is formed on the outer peripheral portion of the main body 20 so as to contact the surface portion of the edge of the side surface 10 in the opening portion 11.
The protrusion 22 is inserted from the outside into the opening 11 and protrudes inside the can. Then, the outer peripheral portion 22 a of the protrusion 22 contacts the end surface of the side surface 10 in the opening 11 and the contact portion 31 of the inner transparent member 3.
The outer peripheral portion 22a and the contact portion 31 are bonded by an ultrasonic wave or the like to be integrated.

The claw portion 23 is formed at a specific position of the protruding portion 22, and a concave portion 32 is formed in the corresponding inner transparent member 3.
The claw portion 23 temporarily fixes (joins) the outer transparent member 2 to the inner transparent member 3 through the opening 11, and is desirably provided at a plurality of two or more places.

[Inside transparent member 3: FIGS. 2 and 3]
As shown in FIGS. 2 and 3, the inner transparent member 3 is provided at the inner edge of the opening 11, and is larger than the outer transparent member 2, but the window portion is hollowed out.
The thickness portion of the inner periphery of the inner transparent member 3 cut out as a window portion is a contact portion 31, and adheres to the outer peripheral portion 22 a of the projecting portion 22.
In addition, the inner transparent member 3 is formed of an ABS resin or the like.

[Relationship between claw portion 23 and concave portion 32: FIG. 4]
Furthermore, in the contact portion 31 of the inner transparent member 3, a recess 32 is formed at a position corresponding to the claw portion 23 of the outer transparent member 2.
The positions where the concave portion 32 and the claw portion 23 are formed will be described with reference to FIG. FIG. 4 is a schematic view showing the relationship between the claw portion and the concave portion of the window portion. In FIG. 4, it is the figure seen from the outer side of the can.

As shown in FIG. 4, the contact portions 31 of the inner transparent member 3 are installed inside the edge 11 a of the side surface 10 in the opening 11, and the contact portions 31 are formed at a plurality of locations (four locations in FIG. 4). It arrange | positions so that the nail | claw part 23 of the outer side transparent member 2 may be inserted in the recessed part 32. FIG.
Then, the claw portion 23 is inserted into the recess 32 and the outer transparent member 2 and the inner transparent member 3 are joined.

[Connection part of outer transparent member and inner transparent member: FIG. 5]
The connection part of the outer transparent member 2 and the inner transparent member 3 will be described with reference to FIG. FIG. 5 is a cross-sectional explanatory view showing a connection portion of the outer transparent member and the inner transparent member. In particular, a connection portion between the claw portion 23 and the recess 32 is shown. In FIG. 5, the cross section of the window in the horizontal direction in the can is shown, with the lower side of the figure being the outside of the can and the upper side of the figure being the inside of the can and curving so as to protrude outward.

  As shown in FIG. 5, the protrusion 22 of the outer transparent member 2 is inserted into the opening 11, the flange 21 abuts on the edge 11 a of the side surface 10 in the opening 11, and the outer peripheral portion 22 a of the protrusion 22 is transparent inside The claw portion 23 is fitted in the recess 32 in contact with the contact portion 31 of the member 3.

[Manufacturing method of this can]
Next, the manufacturing method of this can is demonstrated.
In the present can, the metal can 1 is formed into a cylindrical shape, and the opening 11 serving as a window is hollowed out.
Then, the outer transparent member 2 is fitted into the opening 11 from the outside of the metal can 1 and the inner transparent member 3 is temporarily fixed (joined) so as to sandwich the edge portion of the opening 11 from the inside of the metal can 1.
In the temporary fixing, the claw portion 23 of the outer transparent member 2 is pressed into the recess 32 of the inner transparent member 3 so as to be fixed.

Furthermore, in the temporarily fixed state, the ultrasonic bonding horn is brought into contact with the outer transparent member 2 from the outside of the metal can 1 to generate an ultrasonic wave for several seconds, and the projection 22 is made into the contact portion 31 by the vibration of the ultrasonic wave. Bond to each other (ultrasonic bonding) and unite them together. The contact may use heat, but it is desirable to use a short time ultrasonic wave so that the ABS resin does not deform.
Further, instead of using ultrasonic waves or heat, an adhesive may be used for adhesion.

[Effect of the embodiment]
According to the present can and the method for manufacturing the same, an opening 11 to be a window is formed on the side surface 10 of the metal can 1, and a protrusion 22 larger than the shape of the opening 11 and protruding along the opening 11 The outer transparent member 2 having the claw portion 23 for stopping is inserted into the opening 11 from the outside of the can, and the contact portion 31 larger than the shape of the opening 11 and in contact with the projection 22 and the concave portion into which the claw portion 23 is fitted Since the inner transparent member 3 having 32 is bonded to the outer transparent member 2 from the inside of the can and the projection 22 of the outer transparent member 2 and the contact portion 31 of the inner transparent member 3 are ultrasonically bonded, the claw The part 23 is inserted into the recess 32 and the outer transparent member 2 and the inner transparent member 3 are temporarily fixed, and then the outer transparent member 2 and the inner transparent are adhered by bonding of the protrusion 22 and the contact part 31 by ultrasonic waves. The members 3 are integrated, There is an effect capable window hardly come off easily from the body.

  The present invention is suitable for a transparent windowed metal can and a method for manufacturing the same, which can easily manufacture transparent windows of metal cans and which can not be easily removed after manufacture.

  DESCRIPTION OF SYMBOLS 1 ... metal can, 2 ... outer transparent member, 3 ... inner transparent member, 4 ... lid part, 5 ... window part, 10 ... side surface, 11 ... opening part, 11a ... edge part, 20 ... main body, 21 ... collar part, 22: Protrusion part, 22a: Outer peripheral part, 23: Claw part, 31: Contact part, 32: Recess

The present invention for solving the problems of the prior art is a metal can with a transparent window, which has an opening serving as a window on the side, and has a projection larger than the shape of the opening and protruding along the opening. An outer transparent member having a tab for temporary locking formed in the projecting portion, a contact portion which is larger than the shape of the opening and has a portion corresponding to the opening and is in contact with the projecting portion, and a contact portion And an inner transparent member having a recess into which the claws are fitted, the outer transparent member being inserted into the opening from the outside of the can and the inner transparent member being inserted from the inside of the can so that the claws are fitted into the recesses The inner transparent member and the outer transparent member are joined at the edge of the opening, and the projection of the outer transparent member and the contact portion of the inner transparent member are bonded.

The present invention provides a method of manufacturing a transparent window with metal cans, and the side surface of the metal can, to form an opening serving as a window, larger than the shape of the opening, the protruding portion protruding along the opening, projecting An outer transparent member having a tab for temporary fastening formed in the part is inserted into the opening from the outside of the can, and a portion larger than the shape of the opening, corresponding to the opening is hollowed out and contacts the projection And an inner transparent member formed in the contact portion and having a concave portion into which the claw portion is fitted , disposed from the inside of the can to the edge portion of the opening so that the claw portion is fitted into the concave portion, An outer transparent member is bonded, and a protrusion of the outer transparent member and a contact portion of the inner transparent member are bonded by ultrasonic waves.

According to the present invention, the shape of the opening is larger than the shape of the opening, the outer transparent member having the protrusion protruding along the opening and the hook for temporary fastening formed on the protrusion , A portion corresponding to the opening is hollowed out and has a contact portion contacting the projection and an inner transparent member formed in the contact portion and having a recess in which the claw is fitted, the outer transparent member being the outside of the can The inner transparent member is disposed at the edge of the opening from the inside of the can so that the claw portion is inserted into the recess and the claw portion is fitted into the recess , the inner transparent member and the outer transparent member are joined, and the outer transparent member protrudes Since the transparent window metal can is bonded to the contact portion of the inner transparent member and the inner transparent member, it is possible to easily manufacture a transparent window of a metal can and to make it difficult to easily remove after manufacturing. .

Claims (5)

It is a metal can that has an opening that becomes a window on the side,
An outer transparent member having a protrusion larger than the shape of the opening and protruding along the opening; and a claw for temporary fixing;
It has a contact portion larger than the shape of the opening and in contact with the projection, and an inner transparent member having a recess into which the claw is fitted.
The outer transparent member is inserted into the opening from the outside of the can, and the inner transparent member is joined to the outer transparent member from the inside of the can, and the protrusion of the outer transparent member and the inner transparent member A metal can with transparent window characterized in that the contact portion is adhered.   The metal can according to claim 1, wherein the metal can is a tin can.   The transparent windowed metal can according to claim 1 or 2, wherein a plurality of claw portions of the outer transparent member are formed, and a plurality of corresponding concave portions are also formed. Form a window opening on the side of a metal can,
An outer transparent member having a protrusion larger than the shape of the opening and protruding along the opening and a claw for temporary fixing is inserted from the outside of the can into the opening.
Bonding an inner transparent member having a contact portion larger than the shape of the opening and in contact with the protrusion and a recess into which the claw is fitted, from the inside of the can to the outer transparent member;
A method of manufacturing a metal can with a transparent window, comprising: bonding the projection of the outer transparent member and the contact portion of the inner transparent member with ultrasonic waves.   The method according to claim 4, wherein the metal can is a tin can.

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