JP3047216U - A jig for removing the can lid of a rolled can body - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To remove a can lid from a crimped can body having a can lid cut along the outer periphery of the crimped portion without deforming the crimped portion and easily opening the can lid. Remove. A flat plate portion (11) has a claw (12) protruding from a part of its end face, and a handle (14) from an opposite end face.
Is protruded. On one main surface of the flat plate portion 11, a hook portion 14 that can be engaged with the outer lower end of the canned portion of the can body is integrally provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a can lid removing jig used for separating a can lid from a can body after cutting the wound section along an outer circumference for dimensional inspection of the can closed section of a can body. In particular, the present invention relates to a can lid removing jig suitable for separating a can lid having no tab structure for opening.

[0002]

[Prior art]

 Currently, various beverages and groceries are sold in the form of canned products. The can body used in this type of can product is composed of a can body and a can lid, and the end of the can body and the peripheral edge of the can lid are tightly joined and integrally joined, and the inside is hermetically sealed. Used cans are used.

There are roughly two types of wound can bodies. One is called a two-piece can, in which a can lid is connected to the upper end of a can body whose body and bottom are integrally formed by deep drawing of aluminum. The other is called a three-piece can, in which can lids are connected to both ends of a cylindrical can body. There are also two types of can lids. One is a can lid provided with a tab structure for opening, and the other is a can lid not provided with such a tab structure.

[0004] By the way, insufficient tightening of the can body and the can lid may cause problems such as leakage of the contents to the outside or corrosion, so that the quality of the tightening is checked in the manufacturing process. ing. In this inspection, the width W and thickness T of the tightened portion, the length CH of the folded portion (cover hook portion 101a) of the outer peripheral portion of the can lid 101, and the folded portion (body hook) of the can main body 102 shown in FIG. Measure the length BH of the portion 102a), the length OL of the portion where the cover hook portion 101a and the body hook portion 102a overlap (overlap portion), and compare these values with a reference value. Done by In order to inspect the dimensions of the tightened part, it is necessary to disassemble the tightened part without deforming the part where the dimensions are measured.

[0005] In order to make it possible to disassemble the wound portion easily and in a short time, the present applicant sets a predetermined position of the wound portion while rotating the can body around its central axis. A disassembling apparatus for cutting along a circumferential direction has been proposed (see Japanese Patent Application Laid-Open Nos. 7-204766 and 9-85368). After removing the can lid from the can body, the dimensions of the required parts, such as the cover hook and body hook, of the tightened part remaining on the can body are measured for the can body whose winding part has been cut by this dismantling device. You.

Conventionally, a rod-shaped jig has been used for removing a can lid from a wound can body of a beverage product. Generally, a can body for a beverage product has a tab structure on a can lid for forming an opening serving as a drinking mouth.

When removing the can lid provided with the opening, a rod-shaped jig is inserted through the opening of the can lid, and the jig is placed at two locations, the inner end of the opening and the top of the tightening portion. The can body and the jig are relatively rotated so that they come into contact with each other, and the can lid is removed from the can body at the inner end of the opening with the part in contact with the top of the tightening part as a fulcrum. Apply force. Thereby, the can lid is removed from the can body at the portion cut by the dismantling device. When removing the can lid on the side of the three-piece can that does not have an opening, insert the jig through the opening of the other can lid, and remove the back of the can lid from the side without the opening. Hit it. Then, the jig is pressed against the can lid, and the can lid is removed from the can body with that force.

[0008]

[Problems to be solved by the invention]

 However, even if the outer peripheral portion of the wound portion is cut using a dismantling device, the conventional rod-shaped jig has the following problems.

When the can lid on the side provided with the opening is removed, stress is concentrated on the top of the winding portion serving as a fulcrum, and the top of the winding portion may be deformed. If the top of the tightening part is deformed, the exact dimensions of the tightening part cannot be measured, which will hinder the management of the tightening process. On the other hand, when removing the can lid on the side where the opening is not provided, it was necessary to press the jig with a strong force to release the engagement of the fastening part. In addition, since the jig is pressed with a strong force, when the can lid comes off, the can lid pops out with its momentum, possibly causing harm to the surrounding area. Also, in the case of three-piece cans, as is often the case with canned products, when the tab structure for forming the opening is not provided on either can lid, the jig is placed inside the can body. The conventional jig could not be used because it could not be inserted.

Accordingly, the present invention provides a method for removing a can lid from a crimped can body in which a can lid is cut along the outer periphery of a crimped portion, without removing the canned portion and easily removing the can lid. It is an object of the present invention to provide a can lid removing jig that can perform the operation.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the jig for removing the can lid of the canned can body according to the present invention is provided along the outer periphery of the tightened part for the dimensional inspection of the tightened part for integrally connecting the can body and the can lid. A can lid removing jig used to remove the can lid from the wound can body obtained by cutting the can lid, comprising: a flat plate portion having a handle protruding from one end; and a projecting portion protruding from the other end of the flat plate portion. And a hook portion provided on one main surface of the flat plate portion and capable of engaging with the outer lower end of the tightening portion.

[0012] In the can lid removing jig of the present invention configured as described above, the can lid is cut in advance along the outer periphery of the canned portion of the can body. Then, when the hook is engaged with the outer lower end of the canned portion of the can body and the handle is pulled up, the claw portion breaks through the can lid and an opening is formed at the outer edge of the can lid. Next, the jig for removing the can lid is removed from the can body, and the claw is inserted into the opening from a direction perpendicular to the radial direction of the can lid with the hook portion facing upward, and the handle is pushed down. Then, according to the leverage principle, the upward force of the claw portion acts on the can lid with the end on the side where the claw portion of the flat plate portion is provided serving as a fulcrum, and the can cover comes off from the can body.

In particular, by providing the hook portion at the other end of the flat plate portion, the opening is formed at the peripheral edge of the can lid. Therefore, when the claw portion is inserted into the opening and the can lid is removed, the force for separating the can lid from the can body acts more effectively.

[0014]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of the can lid removing jig of the present invention. As shown in FIG. 1, a can lid removing jig 10 of the present embodiment has a claw portion 12 protruding from a part of an end face of a disc-shaped flat plate portion 11, and a claw portion 12 of the flat plate portion 11. A handle 14 protrudes from the opposite end face of the provided portion, and a hook portion 13 is integrally provided on one main surface of the flat plate portion 11.

The claw portion 12 is a projection with a sharp tip for forming an opening in the can lid, and is slightly curved toward the hook portion 13. The hook portion 13 is a hook-shaped member located at the end of the flat plate portion 11 on the side where the claw portion 12 is provided. When the claw portion 12 forms an opening in the can lid, the hook portion 13 of the can body is tightened. At the lower end of the cover hook portion. Further, the diameter of the flat plate portion 11 is smaller than the inner diameter of the tightened portion of the can body from which the can lid is to be removed.

Next, in the procedure of removing the can lid using the can lid removing jig 10 described above, a case where a can lid without a tab structure for forming an opening is removed will be described with reference to FIG. This will be described with reference to FIGS.

Prior to using the can lid removing jig 10, the can lid is cut at a predetermined position on the outer surface of the wound portion over the entire week using a disassembling device or the like described in the related art. .

First, as shown in FIG. 2, the hook portion 13 of the can lid removing jig 10 is engaged with the lower end of the cover hook portion 101 a of the tightening portion of the can body 100.

Next, as shown in FIG. 3, the handle 14 is pulled up, and the can lid removing jig 10 is rotated in the direction of the arrow shown in the figure around the engaging portion with the cover hook portion 101a. As a result, the claw portion 12 pierces the can lid 101, and an opening 101b is formed at the outer edge of the can lid 101.

After the opening 101b is formed in the can lid 101, as shown in FIG. 4, the can lid removing jig 10 is turned over, and the claw portion 12 is inserted into the opening 101b. At this time, the claw portion 12 is inserted from a direction perpendicular to the radial direction of the can lid 101.

Then, as shown in FIGS. 5 and 6, by pressing down the handle 14, the can lid 101 and the vicinity of the base of the claw 12 of the can lid removing jig 10 come into contact with each other. The can lid removing jig 10 rotates in the direction of the arrow shown in FIG. As a result, as shown in FIG. 7, the peripheral edge of the opening 101b of the can lid 101 is lifted up by the action of the claw portion 12, and the cover hook portion 101a of the tightening portion in the vicinity thereof is cut into the previously formed cutting portion. And the can lid 101 comes off the can main body 101. FIGS. 4 and 5 are side views of the can body viewed from the direction of arrow B in FIG.

As described above, the removal of the can lid 101 is performed by utilizing the principle of leverage, and the can lid 101 can be removed with a smaller force as compared with the related art. There is no danger of 101 jumping out.

As shown in FIG. 6, when the handle 14 is pushed down, a region serving as a fulcrum becomes the base of the claw portion 12 of the can lid removing jig 10 and is indicated by a region A in the drawing. Therefore, in the initial separation work requiring the most force when separating the can lid 101 from the can main body 102, the distance from the fulcrum to the force point can be increased, and the separation work can be performed with a small force. Also, at this time, the can lid removing jig 10 does not come into contact with the tightened portion, and there is little risk of deformation of the tightened portion, so that there is no hindrance to the subsequent inspection of the tightened portion.

Further, the hook portion 13 is provided at the end of the flat plate portion 11 on the side where the claw portion 12 is provided, and the opening 101 b is formed at the peripheral edge of the can lid 101, and is shown in FIGS. 5 and 6. When the handle 14 is pushed down as described above, an upward force acting on the can lid 101 is generated at the periphery of the can lid 101. As a result, the force for separating the can lid 101 can be applied to the can lid 101 more effectively.

In this separating operation, finally, the flat plate portion 11 of the can lid removing jig 10 comes into contact with the tightening portion and functions as a fulcrum. Also, since the fulcrum is not in point contact but in line contact, the force applied to the tightened portion is dispersed, and the risk of deformation of the tightened portion is small.

The can lid removing jig of the present invention is particularly suitable for removing a can lid without a tab structure for forming an opening from a can main body. It can also be used to remove a can lid provided with a tab structure. In this case, if the tab structure is operated to form an opening in the can lid, and the claw 12 is inserted through this opening, the claw 12 opens the can into the can lid as shown in FIG. It is not necessary to form

[0028]

[Effect of the invention]

 As explained above, the can lid removing jig of the present invention has a handle provided at one end and a main surface of a flat plate portion having a claw portion protruding from the other end, and the outer lower end of the canned portion of the can body. It has a very simple structure with a hook portion that engages with the can, and even with a can lid that does not have a tab structure for opening the can body, it does not deform the tightened portion and uses a small force. The can lid can be easily removed from the can body whose can lid has been cut along the outer periphery of the tightening portion.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a can lid removing jig of the present invention.

FIG. 2 is a view for explaining a procedure of using the can lid removing jig shown in FIG. 1, and shows a state in which a hook portion is engaged with a lower outer end of a tightening portion.

FIG. 3 is a view for explaining a procedure for using the can lid removing jig shown in FIG. 1, showing a state in which the handle is further pulled up from the state shown in FIG.

FIG. 4 is a view for explaining a procedure for using the can lid removing jig shown in FIG. 1 and shows a state where a claw portion is inserted into an opening formed in the can lid.

FIG. 5 is a view for explaining a procedure of using the can lid removing jig shown in FIG. 1, and shows a state in which the handle is further pressed down from the state shown in FIG.

6 is a plan view in the state shown in FIG.

FIG. 7 is a sectional view taken along line CC of FIG. 6;

FIG. 8 is an enlarged sectional view of a tightening portion of the can body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 can lid removing jig 11 flat plate part 12 claw part 13 hook part 14 handle 100 can body 101 can lid 102 can body

Claims (2)

[Utility model registration claims] 1. The can lid is removed from the can body obtained by cutting the can lid along the outer periphery of the tightening portion for dimensional inspection of the tightening portion that integrally connects the can body and the can lid. A can lid removal jig used for: a flat plate portion having a handle protruding from one end portion, a claw portion protruding from the other end of the flat plate portion, and provided on one main surface of the flat plate portion,
A jig for removing a can lid of a canned can body, the jig having a hook portion engageable with an outer lower end of the crimped portion. 2. The jig for removing a can lid from a tightened can body according to claim 1, wherein the hook portion is provided at the other end of the flat plate portion.