JPH0649376Y2 - Embossing device for 3-piece cans - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an embossing device for embossing a three-piece cylinder with a printing screen or the like.

(Prior Art) In order to enhance the aesthetic effect of a can, for example, as shown in FIG. 3, it is required to emboss the label printing part a or the label sticking part of the can body c according to the screen. .
However, in the case of a round can, it is difficult to position the embossing according to the print screen, and thus a device that meets such a request has not yet been provided.

(Problems to be Solved by the Invention) The present invention was devised in order to meet the above-mentioned requirements, and in particular, it is possible to easily position a three-piece can having a side seam portion together with a printing screen. It is an object of the present invention to provide an embossing device for a three-piece round can that can be embossed easily and accurately.

(Means for Solving Problems) In the case of a three-piece round can, the printing screen and the side seam portion are always in the same positional relationship because the blank is previously printed and then the can body is molded. Focusing on this point, the embossing device of the present invention is configured to position the can by utilizing the side seam portion, and is configured by the following means.

A mandrel supported in a cantilevered state, an embossed inner die provided in a surface concave portion of the mandrel, a mandrel urged to engage a side seam step of a can body externally inserted in the mandrel, and supported by the mandrel. Stop gauge,
It is characterized by comprising an embossed outer mold which is reciprocally driven so as to face the inner embossed mold.

Further, a side seam positioning gauge whose tip is urged so as to engage with a step of a side seam portion of a can body inserted from the mandrel into the mandrel and swingably supported, and an embossed outer die By providing a positioning stud that swings the side seam positioning gauge in synchronization with the above, the can barrel can be automatically positioned in synchronization with the lowering of the outer embossing die. .

(Operation) By setting the space between the inner and outer embossing molds and the stop gauge to be the same as the space between the side seam of the can and the embossing position, the can is mounted on the mandrel and the side When the seam portion is rotated until it hits the stop gauge portion, the embossing position of the can is exactly positioned between the embossing molds, and the image portion can be accurately embossed.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

1 and 2 show an embodiment of an embossing device for a three-piece round can according to the present invention.

In the figure, reference numeral 1 denotes a mandrel which is cantilevered and supported by the apparatus main body 2. An embossed inner die mounting recess is formed on the outer peripheral portion of the mandrel, and a predetermined embossed inner die 15 is detachably fixed. Further, the mandrel 1 is formed with a concave portion 3 having a substantially fan-shaped cross section that extends along the axial direction to the axial center portion, and has a mounting flange 4 at its mounting end and a can end positioning flange 5 near the mounting flange. have. A shaft 6 whose one end is rotatably supported by the apparatus main body 2 is located in the recess 3 of the mandrel, and a two-pronged swing lever 7 having a U-shaped cross section is fixed to the shaft, and the two-sided portion has a side portion. A seam positioning gauge 8 is swingably attached. A spring 9 is provided between the side seam positioning gauge 8 and the rocking lever 7, and is biased so that the tip of the positioning gauge contacts the inner surface of the can barrel when the can barrel is mounted on the mandrel 1. A positioning lever 10 is fixed to the side of the swing lever 7 so as to project to the outside of the mandrel. The tip end of the positioning stud 21 contacts the tip end of the positioning lever 10. Further, a spring 13 is also provided between the swing lever 7 and the mandrel to urge the swing lever 7 upward. A stop gauge 11 is rotatably pivotally attached to a protrusion formed on the flange 5, and is urged by a spring 12 so that its tip comes into contact with the outer peripheral surface of the can body c mounted on the mandrel 1. Has been done.

Reference numeral 16 denotes an embossed outer mold that is detachably attached to an operating member 20 that is reciprocally driven at a predetermined stroke by a reciprocating drive device (not shown) so as to face the inner mold 15 fixed to the outer peripheral portion of the mandrel 1. A wrinkle restraining member 17 is slidably fitted on the outer side of the wrinkle restraining member 17. The wrinkle restraining member 17 is normally pressed downward by a spring 18 and its tip projects downward from the tip of the embossed outer die 16. 21 is a positioning lever
A positioning stud that presses the operating member 20.
A member 22 fixed to the member 22 is slidably attached in a vertically slidable manner, and a spring 23 is interposed between the lower portion of the member 22 and the member 22 to buffer the pressing force of the positioning lever.

The apparatus of the present embodiment is configured as described above, and the can body c to be embossed is pushed into the mandrel 1 until the tip hits the positioning flange 5 by an appropriate mounting means or manually, and the side thereof is pushed. Seam d is a stop gauge
Turn until you hit 11. In that case, if the can body is attached to the mandrel so that the side seam portion d is located in the swinging range of the tip of the side seam positioning gauge 8, the can body will not be rotated until it hits the stop gauge 11. During the downward movement of the mold, the can barrel is automatically rotated and positioned until it hits the stop gauge. That is, when the actuating member 20 descends, the positioning stud 21 also descends together with the embossing outer mold 16, hitting the positioning lever 10 and pressing it downward.
As a result, the swing lever 7 swings, and the side seam positioning lever 8 swings while contacting the inner surface of the can, and the tip thereof catches a step inside the side seam portion to rotate the can. When the step portion outside the side seam portion of the can engages with the stop gauge 11, the rotation of the can stops and the can is positioned in that state.

When the outer mold further descends, the wrinkle suppressor 17 presses the can first, then the outer mold 16 hits the can and presses the can against the inner mold to emboss it, and when the outer mold reaches the bottom dead center, it rises and the processing is completed. Further, the positioning stud 21 and the positioning lever 10 are separated from each other near the top dead center of the outer die 16, and the seam positioning gauge 8 is also returned to its original state to complete the work. Therefore, if the distance between the embossing die position and the stop gauge is set to be the distance between the side seam portion of the can and the embossing position, the can rotates when the upper die descends and the stop gauge And the embossing position of the can is accurately positioned between the embossing dies, and the image portion can be accurately embossed.

Incidentally, depending on the direction of the side seam of the can body, the side seam positioning gauge may be fixed and the stop gauge may be rotated, contrary to the case of the above-described embodiment in the relationship between the stop gauge and the side seam positioning gauge. Further, if the can is mounted on the mandrel and the can is rotated manually or by other mounting means, only the positioning stopper is required, and it is not always necessary to provide the side seam positioning gauge and the positioning stud for operating it. There is no.

(Effect) The present invention has the following special effects.

(1) Since the side seam of the can is hooked with a stop gauge to position the can body, it can be positioned reliably and easily, and as long as there is no screen misalignment when cutting the blank, the screen position is embossed with high accuracy. Can be applied.

(2) According to the configuration of claim 2, the can body is automatically rotated while the upper mold is being lowered until it is stopped by the stop gauge, so that the can body can be automatically positioned.

[Brief description of drawings]

FIG. 1 is a front view of an embossing device for a three-piece round can according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a front view of a three-piece round can. 1: Mandrel, 2: Device body, 3: Axial recess, 6: Shaft, 7: Swing lever, 8: Side seam positioning gauge, 10: Positioning lever, 11: Stop gauge, 15: In embossed mold, 16:
External embossing type, 17: Wrinkle retainer, 21: Positioning stud

Claims (2)

[Scope of utility model registration request] 1. A mandrel supported in a cantilever state, an embossed inner mold provided in a concave portion on the surface of the mandrel, and a biasing force to engage with a step of a side seam portion of a can body externally inserted in the mandrel. An embossing device for a three-piece round can, comprising a stop gauge supported by a mandrel and an embossing outer mold that is reciprocally driven so as to face the inner embossing mold. 2. A mandrel supported in a cantilever state, an embossed inner mold provided in a concave portion of the surface of the mandrel, and a tip engaged with a step of a side seam portion of a can body inserted from the inside of the mandrel into the mandrel. A can side seam positioning gauge that is urged so as to be swingably supported, and is biased so as to engage with a step of the side seam portion of the can body that is externally inserted on the mandrel from the outside of the can body and is biased to the mandrel. 3. A stop gauge supported, an embossing outer die that is reciprocally driven opposite the embossing inner die, and a positioning stud that swings the side seam positioning gauge in synchronization with the embossing outer die. Embossing device for piece round cans.