JPH0688759A - Tab torque measuring apparatus - Google Patents

Abstract

PURPOSE:To accurately measure a tab-torque in a state where a can lid is placed for a practical use. CONSTITUTION:A can 4 having a can lid 4a with a tab 4b is held on a hollow section 3a of a rotating table 3 by a pair of ring members 5 and clamp holders 6 and 7. A needle member 10 is located inside the section 3a in a manner that it can move verticall to allow a needle 10a to enter the inside of the can from the bottom and fill the inside with air. A pin pad 14 is attached to be engaged with the tab 4b on a load cell 13 for measuring tab-torque located on the underside of a vertically movable measuring means 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tab torque measuring machine for measuring the torque of a tab attached to a lid of a can for filling and enclosing juice or the like.

[0002]

2. Description of the Related Art Conventionally, a tab of a can lid has been required to be fixedly held at a predetermined position, and it has to be fixedly held against a load of a predetermined amount horizontally applied to the tab. A tab torque measuring machine is used to measure the rotational load of such a tab. In the conventional type in which the tab is detached from the can lid at the time of opening the can during measurement, only the can lid as shown in FIG. The load is applied to the tab by rotating the jig fixing the lid, and the load when the tab starts to rotate is measured. on the other hand,
As shown in Fig. 4, the tab of the Steion type can lid is fitted in a recess called a deboss. The tab of the load cell of the tab torque measuring machine is engaged with this tab to measure the rotational load of the tab. It has become.

[0003]

However, in this case, since the tabs are fitted in the debosses, the engagement between the two was not sufficient. In addition to this, debossing was an obstacle, and accurate measurement could not be performed.

On the other hand, conventionally, a can of juice or the like is manufactured by a manufacturer of the can and then filled with contents by a drinking water maker or the like. After the filling, a positive pressure is applied to the inside of the can. Therefore, there is a problem that the can lid is bulged outward (dorming), and as a result, the tab is lifted and the tab is easily rotated. Therefore, the tab rotation phenomenon is likely to occur after filling the contents at the stage of a drinking water manufacturer or the like, and was also a quality inspection item at this stage. However, at the stage of a can maker or the like, it is difficult to measure the tab torque only with the can lid, so it is difficult to accurately measure the tab torque, and accurate tab torque measurement is required at this stage.

In view of the above problems, the present invention provides a tab torque measuring machine capable of accurately measuring the tab torque according to the state of actual use of the can at the stage of a can manufacturer or the like. With the goal.

[0006]

SUMMARY OF THE INVENTION A tab torque measuring machine according to the present invention comprises a rotatable support member for supporting a can having a can lid with a tab, and a filling material filled in the can to open the can lid outward. And a measuring means for measuring the torque of the tab when the can lid is in a raised state.

[0007]

When the can is supported by the support member and the filling is filled in the can with the supporting member, the can lid bulges outward due to the internal pressure and the tab rises. The engagement with the means is easy and accurate and the load at which the tab begins to rotate can be accurately measured.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a configuration diagram of a main part of a tab torque measuring machine.
In the figure, a rotary member 2 having a hollow portion 2a and connected to a drive source is rotatably mounted on a base portion 1 of a tab torque measuring machine via a bearing. A rotary table 3 having a hollow portion 3a which is also concentric is connected to the upper flange of the rotary member 2. On the rotary table 3, a pair of substantially semicircular ring members 5 and 5 for positioning the can 4, which is an object to be measured, is removably attached to the hollow portion 3a. Here, it is assumed that the can 4 has a top-type lid 4a having a tab 4b of the Steion type and is tightly wound around the body.
Further, the ring members 5 and 5 can be replaced with ones having an appropriate diameter according to the diameter of the selected can 4. A fixed clamp holder 6 is provided outside one ring member 5, and a movable slide clamp holder 7 is provided outside the other ring member 5.
Is arranged, and the movable slide clamp holder 7 is pushed by the cylinder member 8 so that the pair of ring members 5 and 5 can be adjusted according to the outer diameter of the can 4 so as to be closely fixed to the can 4. It has become.

Hollow part 2 of rotary member 2 and rotary table 3
In a and 3a, a needle member 10 capable of advancing and retracting with respect to the bottom surface of the can 4 is arranged, and a needle 10a fixed in the member 10 is inserted into the can 4 from the bottom surface, Air can be filled into the can 4 from the needle 10a. Further, above the hollow portion 3a of the rotary table 3, there is provided a measuring means 12 which can be vertically moved by being guided by a shaft 11 supported by the base portion 1. In the measuring means 12, a pin pad 14 capable of engaging with a tab 4b mounted on the upper lid 4a of the can 4 is attached to the lower surface of the load cell 13 located below the measuring means 12. In the load cell 13, with the pin pad 14 and the tab 4b engaged, the rotary table 3 is rotated in the horizontal direction so that the load when the tab 4b starts to rotate with respect to the can lid 4a can be measured. Has become. Also, on the lower surface of the load cell 13, when the measuring means 12 moves downward on the upper lid 4a of the can 4,
There is provided a pad 15 for abutting against.

Since this embodiment is constructed as described above, when measuring the tab torque of the can, not only the upper lid as in the conventional case but also the can 4 fastened with the body is mounted on the tab torque measuring machine. That is, the can 4 is placed on the hollow portion 3a on the rotary table 3, ring members 5 and 5 having a diameter suitable for the diameter of the can 4 are selected and attached, and then the clamp holder 7 is tightened by the cylinder member 8. , Holding the can 4 fixed in place. Next, when the needle member 10 in the retracted state is moved downward, the needle 10a enters the inside of the can from the bottom surface of the can 4. When the can is filled with air in this state, the pressure inside the can becomes a positive pressure, the upper lid 4a bulges outward and becomes spherical, and the tab 4b rises (see FIG. 2). Then, the measuring means 12 is moved downward at a position where the tab 4b of the upper lid 4a faces the pin pad 14, and the pin pad 14 is fitted into the finger insertion hole of the tab 4b while the upper lid 4a of the can 4 is in contact with the pad 15. It becomes a state. In this state, if the rotary table 3 is rotated in the horizontal direction and the load when the tab 4b presses the pin pad 14 and starts to rotate is measured by the load cell 13, the tab torque can be measured. Moreover, the state of the can 4 at this time becomes a state in which the drinking water is filled with drinking water or the like, that is, a state in which the actual condition is reproduced.

As described above, in the present embodiment, the tab torque can be measured in a state where the can 4 is actually filled with the contents and the can lid 4a is raised, and more accurate measurement can be performed.

In addition, in the embodiment, the canion tab type can has been described, but it goes without saying that it can be applied to other types of cans. Further, the rotary table 3, the ring members 5, 5 and the like constitute a support member, and the needle member 1
0 and the needle 10a constitute a filling means.

[0013]

As described above, the tab torque measuring machine according to the present invention is equipped with the filling means for filling the filling with the filling and raising the can lid outward, so that it is suitable for actual use. The tab torque can be measured with, and more accurate tab torque measurement can be realized as compared with the conventional measuring machine.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a tab torque measuring machine according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a change in shape of a can due to air.

FIG. 3 is a diagram showing a configuration of a can lid and a tab.

FIG. 4 is a view similar to FIG. 3 when the tab is a steion type.

[Explanation of symbols]

 2 rotary table 4 can 4a upper lid 4b tab 10 needle member 10a needle 12 measuring means 13 load cell 14 pin pad

Claims (1)

[Claims] 1. A rotatable support member for supporting a can having a can lid with a tab, a filling means for filling a filling into the can to bulge the can lid outward, and a ridge of the can lid. A tab torque measuring machine provided with a measuring means for measuring the torque of the tab in a state.