JPH05245565A - Method and device for seaming container having metallic lid - Google Patents

Abstract

PURPOSE:To execute seaming of a flange part of a container body at the circumferential edge of a metallic lid while the container body being stably held. CONSTITUTION:A bottom part 14b of a container body 14 is supported by a bottom supporting table 21, and a pressing body 23 is inserted within a recessed part 13 formed inside of a circumferential edge part 12 of a metallic lid 11. A stepped part 16 provided immediately below a flange part 15 is supported by a stepped part supporting body 22, and in this condition, a seaming roll 24 is brought into contact with the circumferential edge part 12 of the metallic lid 11 to execute the seaming work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a container with a metal lid, which comprises a plastic container body and a metal lid, and a winding device for the same.

[0002]

2. Description of the Related Art Heretofore, a metal can has been known in which a metal lid is wound around a metal can body, and this metal can is widely used in the food industry and the like.

Recently, as an alternative to a metal can, a container with a metal lid is used, which is formed by winding a metal lid around a plastic container body. When the metal lid is wound around the plastic container body, the peripheral edge portion of the metal lid is wound around the flange portion provided around the upper end opening of the container body using a winding roll.

[0004]

By the way, conventionally, when performing a winding operation, the bottom of a plastic container body is supported by a bottom support, and a metal lid is pressed from above by a pressing body to form a plastic container body. The metal lid is held from above and below, and in this state, it is wound and fastened by using a winding roll arranged outside the container body and the metal lid.

However, since the tightening work is performed between the flange portion of the container body and the peripheral portion of the metal lid, the container body can be held only by supporting the bottom portion of the container body away from the flange portion with the bottom support. May become unstable, and in some cases, the bottom of the container body may be bent and deformed during the tightening work to cause whitening.

The present invention has been made in consideration of the above points, and it is possible to stably hold the container body and the metal lid, and to perform the winding operation with high precision to obtain a good container with a metal lid. An object of the present invention is to provide a method for winding a container with a metal lid and a device for winding the same.

[0007]

According to the present invention, a flange portion provided at an upper end opening of a body portion of a plastic container body is provided.
A method of winding a container with a metal lid, which uses a winding roll to wind a metal lid around a peripheral edge thereof, in which a bottom portion of the container body is supported by a bottom support and a recess formed inside the peripheral edge of the metal lid. A pressing body is fitted inside to press the metal lid downward, and a step portion provided directly below the flange portion of the body portion is supported from below by a cylindrical step portion support body, and the pressing body and the flange portion are provided. A method for winding a container with a metal lid, characterized in that the flange portion and the peripheral edge portion are wound and fastened between a winding roll disposed on the outer circumference, and the method is provided in an upper end opening of a body portion of a plastic container body. In a device for winding a container with a metal lid, which winds a flange portion around a peripheral portion of a metal lid using a winding roll, a bottom support for supporting a bottom portion of the container body, and the inside of the peripheral portion of the metal lid. Fit in the recess formed on the A pressing body for pressing the metal lid downward, and a step provided on the outer periphery of the bottom support so as to be slidable with respect to the bottom support and provided directly below the flange of the body from below. A winding device for a container with a metal lid, comprising: a cylindrical step portion support member for supporting; and a winding roll for tightening the flange portion and the peripheral portion between the pressing body. ..

[0008]

The step portion immediately below the flange portion is supported by the step portion support member during the winding and tightening work, so that the container body can be stably held. Further, since the force from the winding roll is supported by the step support in the step near the flange, the bending moment applied to the container body can be reduced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are views showing an embodiment of a method for winding a container with a metal lid and a winding device therefor according to the present invention.

First, an outline of a container with a metal lid will be described with reference to FIG. As shown in FIG. 3, the container 10 with a metal lid has a flange portion 15 of a substantially cylindrical plastic container body 14.
Then, the peripheral portion 12 of the metal lid 11 is wound and tightened.

Of these, the plastic container body 14
Can be obtained by thermoforming a plastic laminated sheet, but can also be obtained by injection molding a synthetic resin on the surface of a sheet blank. The container main body 14 has a body portion 14a and a bottom portion 14b, and the flange portion 15 is provided so as to project radially outward from the upper end opening peripheral edge of the body portion 14a. Further, the body portion 14a immediately below the flange portion 15 is formed with an annular step portion 16 in which the radius of the body portion 14a decreases downward.

On the other hand, the metal lid 11 is made of aluminum or the like, and has a lid portion 11a for covering the opening of the container body 14 and the lid portion 1.
1a and a peripheral portion 12 provided outside the la. The lid portion 11a is downwardly dropped from the peripheral edge portion 12, so that a concave portion 13 is formed inside the peripheral edge portion 12 (above the lid portion 11a).

Next, a device for tightening a container with a metal lid will be described. 1 and 2, the winding device is a circular bottom support 21 for supporting the bottom 14 b of the container body 14.
And a recess 13 formed inside the peripheral edge 12 of the metal lid 11.
And a circular pressing body 23 that is fitted inside and presses the metal lid 11 downward. The bottom support base 21 and the pressing body 23 are movable in the vertical direction, and the bottom support base 21 and the pressing body 23 are rotatable about the rotation axis L.

Further, a cylindrical stepped support 22 is arranged on the outer periphery of the bottom support 21 so as to be slidable in the vertical direction with respect to the bottom support 21. The step support 22 supports the step 16 formed on the body 14a of the container body 14 from below, and preferably the inner upper end of the step support 22 has the body 14a at the step 16. It comes in close contact with the outer surface. Further, the step support 22 is adapted to rotate together with the bottom support 21. Furthermore, the bottom support 21, the step support 22, and the pressing body 2
The outer periphery of the metal cover 11 is in contact with the peripheral edge of the metal lid 11 and the peripheral edge 1
A winding roll 24 for winding and tightening 2 around the flange portion 15 of the container body 14 is provided movably in the radial direction.

Next, a method for tightening the winding will be described. First, the container main body 14 having the contents 19 filled therein with the bottom support 21 lowered, and the metal lid 11 covering the container main body 14.
And are carried to the bottom support 21 by a carrying line (not shown). In this case, the container body 14 and the metal lid 11
The upper end of the stepped support 22 is lowered to a position aligned with the upper end of the bottom support 21 so as not to hinder the transportation of the above.

Next, the bottom support 21 and the step support 22 are provided.
Rises and stops when the flange portion 15 and the peripheral edge portion 12 come to the same height as the winding roll 24. Next, the pressing body 23 comes down from above and is fitted into the recess 13 formed inside the peripheral portion 12 of the metal lid 11. In this case, the outer peripheral surface of the pressing body 23 comes into close contact with the inner peripheral surface of the peripheral portion 12 of the metal lid 11.

Thereafter, the step support 22 is replaced by the bottom support 21.
Rises while sliding against the step 16 of the container body 14.
The lower part of the container body 14 while supporting the container from below.
Close to the outer surface of a. In this way, the container body 14 and the metal lid 11 are firmly held by the bottom support 21, the step support 22 and the pressing body 23, and then the bottom support 2
1. The step support 22 and the pressing body 23 rotate about the rotation axis L, and at the same time, the winding roll 23 approaches inward in the radial direction. Then, the winding roll 23 contacts the peripheral edge portion 12, and the peripheral edge portion 12 and the flange portion 15 are clamped while the bottom support base 21, the step support body 22 and the pressing body 23 are rotating. During the winding operation, the force applied from the winding roll 24 inward in the radial direction is supported by the pressing body 23.

According to this embodiment, the bottom portion 1 of the container body 14 is
4b is supported by the bottom support 21, and the step 16 formed immediately below the flange 15 of the container body barrel 14a is supported by the step support 22. Further, the inner upper end of the step support 22 is attached to the body. Since it is closely attached to the outer surface of 14a,
The container body 14 can be held stably and reliably.
For this reason, the container main body 14 and the metal lid 11 can be subjected to the winding operation in a stable holding state, and the excellent winding operation with 0L% of 50% or more can be performed. Here, 0 L% means the value of b / a × 100 shown in FIG.

Further, since the stepped portion 16 immediately below the flange portion 15 on which the winding operation is performed is supported by the stepped portion support 22, the operation point of the winding roller 24 (flange portion 15) to the support point of the container body 14 ( The distance to the step 16) can be reduced, and the bending moment applied to the container body 14 can be suppressed. Therefore, bending deformation of the container body 14 can be prevented.

[0021]

As described above, according to the present invention, the container body can be stably held during the winding operation.
Further, the bending moment applied to the container body can be reduced. For this reason, it is possible to perform the tightening work with high accuracy, prevent bending and deformation of the container body, and prevent whitening of the bottom of the container body.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a device for winding a container with a metal lid according to the present invention.

FIG. 2 is an enlarged view of the winding device shown in FIG.

FIG. 3 is a side sectional view showing a container with a metal lid.

[Explanation of symbols]

 10 Container with Metal Lid 11 Metal Lid 12 Peripheral Edge 13 Recess 14 Container Body 14a Body 14b Bottom 15 Flange 16 16 Step 21 Bottom Support 22 Step Support 23 Pressing Body 24 Winding Roll

Claims (2)

[Claims] 1. A method of winding a container with a metal lid, wherein a flange portion provided at an upper end opening of a body portion of a plastic container body is wound around a peripheral portion of a metal lid by using a winding roll. The bottom is supported by a bottom support, and a pressing body is inserted into a recess formed inside the peripheral edge of the metal lid to press the metal lid downward, and the metal lid is provided directly below the flange portion of the body. A stepped portion is supported from below by a cylindrical stepped portion support body, and the flange portion and the peripheral edge portion are wound and fastened between the pressing body and a winding roll arranged on the outer periphery of the flange portion. Method for winding a container with a metal lid. 2. A container closing apparatus for a container with a metal lid, wherein a flange portion provided at an upper end opening of a body portion of a plastic container body is wound around a peripheral edge portion of a metal lid by using a winding roll. A bottom support that supports the bottom, a pressing body that fits into a recess formed inside the peripheral edge of the metal lid and presses the metal lid downward, and a bottom support on the outer periphery of the bottom support. The flange portion and the peripheral edge are provided between the pressing body and a tubular step portion support body that is provided slidably with respect to and supports the step portion provided directly below the flange portion of the body portion from below. A device for winding a container with a metal lid, comprising: a winding roll for winding the portion.