JP6781980B2 - Lid punching device and lid punching method - Google Patents

Description

The present invention relates to a lid material folding device for bending a protrusion protruding from the edge of a container opening among lid materials for covering an opening of a container made of plastic, paper, glass or the like, and a method thereof.

Conventionally, in the fields of foods, cosmetics, chemicals, etc., a device and a method for covering a lid material made of a film composite material or a metal composite material by a heat seal or the like are generally known in order to cover an opening of a container. ..

The lid material adhered to the container in this way is punched along the opening of the container to remove unnecessary portions, and then the protruding portion protruding outward from the edge of the opening of the container is bent downward.

In Patent Document 1, the protruding portion is bent downward by moving the bending means having the tapered portion formed on the inner surface side up and down with respect to the protruding portion of the lid material of the container supported by the holder plate. The device to be used is disclosed.

Further, Patent Document 2 discloses an apparatus for punching and bending a lid material at a time by moving the lid material folding means up and down together with a cutter for punching.

Jikkenhei 2-52702 Japanese Unexamined Patent Publication No. 2004-224388

Here, especially in recent years, there has been a momentum to try to differentiate products by utilizing the protruding portion of the lid material after punching as a part of product design. For this reason, various designs are being studied, such as making the protruding portion wider than the conventional one, adding a design such as a shape or pattern different from the conventional one to the widely taken protruding portion, or giving a handmade texture. ..

However, in order to widen the protruding portion, it is necessary to widen the relief groove for the punching blade formed on the holder plate, but if the width of the relief groove is widened by the diameter as it is, the container Since the outer diameter of the opening and the inner diameter of the relief groove do not match, there is a problem that the container opening cannot be bent along the outer diameter of the container opening in the subsequent bending step of the lid material protrusion. That is, if the inner diameter of the relief groove is larger than the outer diameter of the container opening edge, the bending means that fits into the outer diameter of the container opening edge and bends the lid material protrusion comes into contact with the holder plate. It is not possible to shift to the bending process of the lid material protruding portion as it is.

Further, if the width of the relief groove is simply widened in order to widen the width of the lid material protruding portion, the support from below when the punching blade pushes the lid material from above becomes impossible, and the lid material Depending on the material, there was a large amount of bending, which made punching difficult.

The present invention has been made in view of the above-mentioned conventional problems, and the lid material having a wide protruding portion is surely punched out, and the subsequent bending process of the protruding portion can be smoothly performed without waste. It is something that can be done.

The lid material punching device and the lid material punching method according to the present invention have the following features.
(1) A punching blade that is provided so as to be able to move up and down and punches a lid material that closes the opening of the container including the tubular body and the opening, and the body of the container are passed through. The holder plate comprises a container hole that penetrates the container hole for the purpose, and a holder plate that includes a container support portion that is formed on the periphery of the container hole and supports a collar portion that projects outward from the opening of the container. An annular relief groove for avoiding contact with the punching blade when punching the lid material is formed outside the container support portion, and the inner diameter of the relief groove is the inner diameter of the flange portion of the container . or diameter and the same diameter of the outer edge and smaller diameter with it, characterized in that the diameter of the punching blade body was magnitude biases the outer diameter side of the clearance groove.

According to the present invention, the inner diameter of the relief groove formed in the holder plate is set to the same diameter as or smaller than the outer diameter of the container. Therefore, after the punching of the lid material is completed, the protruding portion of the lid material is used as it is. Even when the bending process is started, the bending means can be prevented from coming into contact with the holder plate, and the diameter of the punching blade is set to a size that is biased toward the outer diameter side of the relief groove. Since the outer diameter of the relief groove serves as a support during punching, punching can be made more reliable.

It is a side view schematic diagram which shows an example of the punching apparatus of the lid material which concerns on this invention. It is a top view which shows an example of the holder plate which concerns on this invention. It is a partially enlarged view of FIG. It is a figure which shows an example of the structure of the lid material folding apparatus which concerns on this invention. It is an enlarged view at the time of bending by the lid material folding apparatus which concerns on this invention. It is an enlarged view which shows the state which made the lid material bending apparatus which concerns on this invention, particularly the container holding means lowered.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the punching process of the lid material 42 will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the container 40 is supported by the holder plate 50. After the sheet-shaped lid material 42 before punching is installed on the container 40 and the container 40 and the lid material 42 are sealed, the lid material 42 is for punching so as to leave a protruding portion 42a having a predetermined width W. It is punched out by the blade body 60. The punching blade 60 is raised and lowered by an elevating means (not shown), and when the punching blade 60 is lowered, the lid material 42 is punched from above to below.

Since the punching blade 60 punches the lid material 42 according to the shape of the opening outer edge of the container 40, it is formed in an annular shape according to the opening outer edge of the container 40 having a substantially circular plan view. As shown in FIG. 2, the holder plate 50 is formed with a relief groove 51 for preventing the punching blade 60 and the bending means 12 described later from coming into contact with the holder plate 50. Further, the holder plate 50 is formed with a container support portion 52 for supporting the flange portion 41 of the container 40 and a container hole 53 for passing the container body portion. The relief groove 51 is formed in an annular shape in a plan view so as to have a positional relationship along the outer edge of the opening of the substantially circular container 40. At the time of punching, the punching blade 60 punches the lid material 42 so as to enter the relief groove 51.

The inner diameter R1 of the relief groove 51 is the diameter of the outer edge of the flange portion 41 of the container 40 in order to avoid contact with the bending means 12 that fits with the outer diameter portion of the opening of the container 40 during the later bending step. It is formed so as to have the same diameter or a smaller diameter. The area from the diameter of the outer edge of the flange portion 41 to just below the punching blade 60 becomes the protruding portion 42a of the lid material and is formed as a width W.

Since the width W of the protruding portion 42a is wider than before (for example, 8 mm or more), the width of the relief groove 51 is wider than before. Therefore, as compared with the conventional narrow relief groove, when punching, when the punching blade 60 pushes the lid material from above, it cannot be supported from below, the lid material bends, and punching cannot be performed. In some cases. This becomes more remarkable as the width of the relief groove 51 becomes wider.

Therefore, the position of the punching blade 60 is a position close to the outer diameter portion 51b while not contacting the outer diameter portion 51b of the relief groove 51 when the punching blade 60 is lowered during punching. It is desirable that the position is at least deviated toward the outer diameter portion 51b of the relief groove 51. That is, in a plan view, the diameter of the punching blade 60 formed in a ring shape is smaller than the outer diameter R2 of the relief groove 51, but is formed so as to be biased toward the outer diameter (closer to the outer diameter portion 51b). Will be done.

By doing so, the vicinity of the upper part of the outer diameter portion 51b of the holder plate 50 serves as a support for the punching blade 60, and the lid material 42 bends to make it difficult for the lid material 42 to escape into the escape groove 51. be able to.

Subsequently, the bending process will be described with reference to FIG. An example of the configuration of the lid material folding device 1 according to the present invention is shown. The lid material folding device 1 mainly includes a first elevating means 10, a second elevating means 20, and a container elevating means 30. The first elevating means 10 and the second elevating means 20 are suspended by the first urging means 11 and the second urging means 21 by springs or the like, respectively, and are provided so as to be vertically movable by a hydraulic cylinder (not shown). Be done. Similarly, the container elevating means 30 is also provided so as to be vertically movable by a hydraulic cylinder or the like.

The first elevating means 10 mainly includes a folding means 12 for bending the protruding portion 42a of the lid material, a heater 13 for heating the bending means 12, and a support 14 for supporting the heater 13. A guide hole 14a for guiding the operation of the first elevating means 10 is formed in the support 14.

The second elevating means 20 includes a container holding means 22 for holding the container from above and a rod 23 connected to the container holding means 22. The rod 23 and the container pressing means 22 are formed with a flow path 24 for circulating a cooling liquid, which will be described in detail later.

The lid material 42 is sealed to the container 40, and the container 40 in a state where an unnecessary portion of the lid material 42 is punched out is installed on the holder plate 50 so as to be supported by the flange portion 41. It is in a state of having a protruding portion 42a protruding outward from the outer edge of the flange portion 41 of the container 40. The holder plate 50 is formed with the above-mentioned relief groove 51 that fits with the descending bending means 12.

The folding means 12 has a fitting portion 12a formed so as to fit the flange portion 41 of the container 40 in order to bend the protruding portion 42a of the lid material adhered to the container downward. The container holding means 22 is provided so as to be located in the space 16 formed so as to be partitioned by the fitting portion 12a.

Subsequently, the operation of the lid material folding device 1 will be described. As shown in FIG. 4, when bending the projecting portion 42a of the lid material, the folding means 12 descends to a predetermined height with respect to the projecting portion 42a of the lid material of the container 40. When the folding means 12 is lowered, the fitting portion 12a pushes down the protruding portion 42a of the lid material, so that the protruding portion 42a is bent downward.

At this time, when the width (W) of the protruding portion 42a is wide (for example, 8 mm or more), it is necessary to bend the bending means 12 by lowering it by that amount in order to prevent the bending from becoming loose. However, as described above, deepening the relief groove 51 formed in the holder plate 50 in order to avoid contact between the bending means 12 (fitting portion 12a) and the holder plate 50 is the holder plate 50 itself. There is a limit to maintaining the strength of.

Therefore, the folding means 12 is lowered to a safe predetermined height in which the fitting portion 12a does not reliably contact the holder plate 50, and the container 40 itself is raised by the container raising / lowering means 30 to raise the fitting portion. By sufficiently bringing the 12a and the entire protruding portion 42a of the lid material into contact with each other, the protruding portion 42a is surely bent.

Further, the inner surface of the fitting portion 12a is tapered. By raising the container 40 by the container elevating means 30, the container 40 is pushed into the taper, so that the container 40 can be reliably bent to the protruding portion 42a.

The rising width (H) of the container 40 by the container raising / lowering means 30 may be appropriately set according to the width of the protruding portion 42a, the depth of the fitting groove 51 of the holder plate 50, and the like.

Further, as shown in FIG. 5, the container pressing means 22 descends to a position where it comes into contact with the seal portion between the container 40 and the lid material. As described above, the container holding means 22 is connected to the rod 23, and a flow path 24 for circulating a cooling liquid such as water is formed inside.

When the protruding portion 42a is bent, the bending means 12 (fitting portion 12a) is heated by the heater 13 and is in a high temperature state, so that heat is transferred to the sealing portion between the container 40 and the lid material 42, and adhesion is achieved. It may become loose. Therefore, by bringing the container pressing means 22 that keeps the temperature below a predetermined temperature into contact with the seal portion by circulating the cooling liquid in the internal flow path 24, the temperature rise of the seal portion is suppressed and the adhesion is loosened. Can be prevented.

The container pressing means 22 is for preventing the sealing portion between the container 40 and the lid material 42 from being heated by the heat from the bending means 12 (fitting portion 12a), and therefore, at least the fitting portion. While the 12a is bending the protruding portion 42a, it is desirable to bring the container 40 into contact with the sealing portion of the lid material 42.

The timing, speed, and the like of raising and lowering the container pressing means 22 may be interlocked with the raising and lowering of the bending means 12, or may be independent of the raising and lowering of the bending means 12.

Here, when the container elevating means 30 is raised by a predetermined height and the fitting portion 12a is fitted with the opening and the protruding portion 42a of the container 40, that is, it is bent with respect to the protruding portion 42a. When the above is applied, the container elevating means 30 may be rotated with the vertical direction as the axial direction.

Since the container 40 also rotates due to the rotation of the container raising / lowering means 30, the rotating container 40 is more reliably pressed against the protruding portion 42a by pressing from the fitting portion 12a and the container pressing means 22. Can be bent.

The present invention is not limited to the examples described above. The power source for raising and lowering the first raising and lowering means 10, the second raising and lowering means 20, the container raising and lowering means 30, and the punching blade 60 is not limited to the hydraulic cylinder, but is an air cylinder or an electric motor. It may be a motor or the like.

Further, the cooling liquid is not limited to water, and may be, for example, an antifreeze liquid to which glycerin or the like is added, or oil. It may be appropriately selected depending on the material, contents and the like of the container 40 and the lid material 42.

1 Lid material folding device 12 Bending means 22 Container pressing means 24 Flow path 30 Container raising / lowering means 40 Container 42 Protruding part 50 Holder plate 51 Relief groove 60 Punching blade

Claims (2)

A punching blade that is provided so as to be able to move up and down and punches a lid material that closes the opening of the container including the tubular body and the opening .
A holder plate including a container hole that penetrates to pass the body portion of the container and a container support portion that is formed on the periphery of the container hole and supports a flange portion that projects outward from the opening of the container. And with
An annular relief groove for avoiding contact with the punching blade when punching the lid material is formed on the holder plate on the outside of the container support portion.
Inner diameter of the relief groove, a smaller diameter than or the diameter and the same diameter of the outer edge of the flange portion of the container,
A lid material punching device characterized in that the diameter of the punching blade is biased toward the outer diameter side of the relief groove. A punching blade that is provided so as to be able to move up and down and punches a lid material that closes the opening of the container including the tubular body and the opening .
A holder plate including a container hole that penetrates to pass the body portion of the container and a container support portion that is formed on the periphery of the container hole and supports a flange portion that projects outward from the opening of the container. And with
An annular relief groove for avoiding contact with the punching blade when punching the lid material is formed on the holder plate on the outside of the container support portion.
Inner diameter of the relief groove, a smaller diameter than or the diameter and the same diameter of the outer edge of the flange portion of the container,
A lid material punching method for punching the lid material using a lid material punching device having a diameter of the punching blade body biased toward the outer diameter side of the relief groove.