JPH04130237A - Can-opening-force measuring apparatus - Google Patents

Abstract

PURPOSE:To make it possible to measure the can opening force of a can lid by logitudinally turning a mounting stage under the state wherein an engaging member is engaged with the tbe of the can lid, and making the turning direction agree with the tab lifting direction. CONSTITUTION:A conveying means 14 conveys a can lid 10 one by one out of a can-lid containing part 12 and moves the can lid to a positioning part 16. At the positioning part 16, the direction of the can lid 10 is adjusted so that the tab of the can lid 10 can be readily engaged with an engaging part 54 in measurement of can opening force at the next step. After the can lid 10 is positioned, the means 14 further moves the can lid 10 to a mounting stage 52 in a can-opening-force measuring part 18. The tab of the can lid 10 is engaged with an engaging projection piece 54a of the engaging part 54. The mounting stage 52 is turned in the longitudinal direction with respect to a fixed stage 50. A pressure measuring part 56 which is associately moved with the engaging part 54 measures the resistance force of the tab. Since the tab-lifting direction agrees with the turning direction of the mounting stage 52, the tab- lifting force, i.e. the can opening force for can lid 10, can be accurately measured.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a can-opening force measuring device for measuring the can-opening force when opening the basket of a can containing juice or the like.

"Prior Art" In recent years, so-called stay-on tab type can lids have been widely used in which a score section formed on the can body can be pushed down by lifting a tab provided on the can lid body. .

FIGS. 4 and 5 are views showing an example of such a stay-on tab type can lid. This can lid is composed of a can lid main body 2 having a columnar fulcrum 1 projecting from its upper surface, and a tab 3 attached to the fulcrum 1. The tab 3 is configured to be rotatable about the fulcrum 1 in a direction perpendicular to the upper surface of the can lid body 2. Said tab 3
is a lifting portion 3a located on one end side of this tab 3 (right side in FIG. 4), an acting portion 3b located on the other end side of the tab 3, and a space between the lifting portion 3a and the acting portion 3b. and a mounting hole 3c provided at the fulcrum portion I and fitted externally to the fulcrum portion I. A score portion 4 is formed on the can lid main body 2 at a position on the lower surface side (lower side in FIG. 5) of the action portion 3b of the tab 3. This score part 4 has a broken line of weakness,
It is configured to open the can lid.

To open a conventional can lid, insert your finger (as shown) between the end of the lifting part 3a (the right end in FIG. 4) and the top surface of the can lid main body 2, and then lift the lifting part 3a upward. lift it up. Then, the tab 3 rotates around the fulcrum part 1,
The action portion 3b contacts the upper surface of the score portion 4. Next, lift the part 3a with your fingers (as shown) while applying a little force.
The can lid can be opened by lifting the can lid upward and pushing the score part 4 further downward by the lower surface of the action part 3b to break the line of weakness.

"Problem to be Solved by the Invention" By the way, in order to improve the usability of the stay-on tab type can lid, it is important to know how much force should be used to lift the lifting part 3a with one's fingers in order to open the can lid. It was necessary to measure whether the

However, in the conventional can opening force measuring device, the can is opened by pulling up the tab in a vertical direction, and the can opening force at that time is measured. Such a device can only measure the component force in the vertical direction when opening the can lid, and cannot accurately measure the can opening force.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a can opening force measuring device that can accurately measure the opening force of a can lid.

"Means for Solving the Problems" The can opening force measuring device of the present invention includes a can lid storage section that stores a can lid having a tab on the top surface, and a can lid positioning unit that sets the can lid in a predetermined direction. a can-opening force measuring section for measuring the can-opening force of the can lid; and a conveying means for conveying the can lid stored in the can lid storage section to a can-lid positioning section and a can-opening force measuring section. , the can opening force measurement unit includes a mounting table on which the can lid is placed, which is vertically rotatably provided on a fixed table, and a locking device capable of locking a tab of the can lid placed on the mounting table. A locking member having a protrusion is provided near the mounting table, and a pressure measuring unit is provided for vertically rotating the table with the tab of the can lid locked by the locking protrusion and measuring the resistance force. It is characterized in that it is provided in conjunction with at least one of the locking member and the mounting table.

"Operation" In the can opening force measuring device according to the present invention, the can lids are taken out one by one from the can lid storage section by the conveying means and moved to the positioning section. Then, in the positioning section, the orientation of the can lid is adjusted so that the tab and the engaging section can easily engage in the next step of measuring can opening force.

After positioning the can lid, the can lid is roughly moved to the mounting table of the can opening force measurement unit by the conveyance means.

Then, the engaging protrusion of the engaging part is engaged with the tab of the can lid, the mounting base is vertically rotated with respect to the fixed base, and the resistance force is measured by the pressure measuring part.

"Example" Hereinafter, a can opening force measuring device according to the present invention will be described with reference to the drawings.

1 to 3 are diagrams showing an embodiment of the can opening force measuring device according to the present invention.

In the figure, the symbol 1O indicates a can lid with a tab on the top surface, 12
14 is a can lid storage unit that stores the can MIO; 14 is a conveyance means that transports the can lid 10 stored in the can lid storage unit 12;
18 indicates a can lid positioning section that sets the can lid 10 in a predetermined direction, and a can opening force measuring section 18 that measures the opening force of the can lid 10.

The can lid storage section 12 is rotatably provided on the support base 20,
can! The device is configured to include a turntable 22 for storing +110, a dispense lifter 24 for pushing up the can lid 10 inside the turntable 22 from below, and an end level sensor 26 for detecting the raised state of the can lid 10.

The turntable 22 is formed into a disk shape in appearance and has a wall thickness similar to the height when a plurality of can lids 10 are stacked,
A can lid storage opening 22m, which has an axis in the same direction as the turntable 22 and has a diameter approximately equal to the can lid lO, is formed slightly inward from the periphery of the can lid. And this can lid storage opening 22
A lower opening 22b whose diameter is slightly smaller than that of the can MIO is formed on the lower surface of the can MIO. Further, from the center of the lower surface of the turntable 22, a rotating shaft 22c is provided to protrude downward. This rotating shaft 22c is connected to the support base 20.
It is connected to a drive device 23 fixed to and is set to be rotatable about its axis.

The dispense lifter 24 includes a vertical drive device 24m fixed on the support base 20, and a vertical drive device 24a.
It consists of a shaft body 24b that moves up and down toward the turntable 22, and a lid portion 24c that is provided at the tip of the shaft body 24b and whose diameter is slightly reduced from the lower opening 22b of the turntable 22. .

The end level sensor 26 is fixed on the support base 20 and set so that its upper end substantially coincides with the upper surface of the turntable 22.

The sensor portion of this end level sensor 22 is set to face the central axis of the turntable 22.

The conveying means 14 moves from the can lid storage section 12 to the can opening force measuring section 18.
A running track 30 provided so as to extend to a running track 30, a running section 32 running along this running track 30, and this running section 3
The configuration includes a drive mechanism 34 that drives the drive unit 2.

The traveling track 30 is provided horizontally with respect to the floor surface, and has an engaging portion 30a that engages and supports the traveling portion 32 carved therein over its entire length.

The running section 32 is generally composed of a running section main body 32a that engages with the engaging portion 30a of the running track 30, and a gripping mechanism 33 provided on the running section main body 32a. The gripping mechanism 33 includes a drive device 33b that drives the shaft body 33a in the vertical direction, and an opening/closing device 33d that is connected below the shaft body 33a and holds the gripping claws 33c so as to be openable and closable.

The drive mechanism 34 uses a ball screw or the like.

The positioning unit 16 includes a rotary table 38 on which the can MIO transported by the transport means 14 is temporarily placed.
and a position detection device 40 that detects the orientation of the can lid lO. The rotary table 38 is rotatably supported by being connected to a drive shaft 43 extending upward from a drive device 42 provided on a support base 41. The position detection device 40 is provided in the traveling section 32, and upon position detection, the position detection device 40 is
It is located above the sensor, with its sensor section (path shown) facing downward.

The detection signal from the position detection device 40 is sent to the drive device 42, and the drive device 42 drives the rotary table 38 based on the detection signal from the position detection device 40.

As shown in FIGS. 1 to 3, the can opening force measurement unit 18 is attached to a fixed base 50 fixed to the floor surface, which temporarily supports the can lid 1O, and is vertically rotatable on the fixed base 50. The supported mounting table 52 and the can IM1 placed on this mounting table 52
The main part is composed of a locking member 54 having a locking protrusion 54a capable of locking the tab 3 of No. ing.

The mounting table 52 has a shaft portion 60 at the upper part of the fixed table 50.
A rotary table 62 is vertically rotatably supported, and two can lid holding members 64 are provided on the upper surface of the rotary table 62.
It consists of 64.

A pulley 60a is provided on one of the shaft portions 60.60. Further, a drive motor 63 for driving the rotary table is provided at the lower part of the fixed table 50, and this drive motor 6
A pulley 63b is provided at the tip of the output shaft 63a of No. 3. The pulleys 60a and 63b have
A belt 65 is wound and connected.

The can lid holding member 64 is supported so as to be slidable along the potato direction of the rotary table 62, with cutout portions 64a having a generally triangular appearance disposed opposite to each other. Further, on the back side of the can lid pressing members 64 and 64, these can lid pressing members 6
A cylinder (can lid pressing member driving device) 66.66 for driving the can lid holding member 4.64 is provided.

The engaging portion 54 is arranged on the upper surface of an engaging portion fixing base 68 that is provided integrally with the fixing base 50 . A guide track 69 extending toward the mounting table 52 is provided on the upper surface of the engaging portion fixing table 68 . A slide table 70 is provided on this guide track 69. The slide base 70 has an oval shape in appearance, and an engagement portion mounting piece 71 projects upward from the bottom portion thereof.

The engaging portion 54 is rotatably attached to the upper part of the engaging portion mounting piece 7I, and the base end of the engaging portion 54 is connected to the upper part of the upright side of the slide base 70. .

A pressure measuring section 56 consisting of a load cell or the like is provided on the back side of the upright side of the slide table 70.

Next, an example of use of the can opening force measuring device according to this embodiment will be described.

First, the can lid storage section! 2, the cans 110 are carried out one by one by the conveying means I4 and moved to the positioning section 16.

Then, in the positioning part 16, the can lid 10 is adjusted so that the tab 3 and the engaging part 52 can be easily engaged in the can opening force measurement in the next step.
Adjust the orientation.

After positioning the can lid 10, the can M10 is further moved by the conveying means 14 to the mounting table 52 of the can opening force measuring section (8).

Then, the engaging protrusion 54 of the engaging portion 54 is attached to the tab 3 of the can lid lO.
a is locked, the mounting table 52 is vertically rotated with respect to the fixed table 50, and the resistance force is measured by the pressure measuring section 56.

As explained above, according to the can opening force measuring device of the present embodiment, since the pulling direction of the tab 3 and the rotating direction of the mounting table 52 match, the force when pulling up the tab 3, that is, the can lid 10 Can opening force can be accurately measured.

Note that the can opening force measuring device of the present invention is not limited to the above-mentioned embodiment, and other modifications are also possible. For example, the pressure measuring part 56 may be configured to be linked to the mounting table 52 instead of being linked to the engaging part 54, and the same effects as in the embodiment described above can be achieved. Furthermore, the can lid type is not limited to the stay-on tab type lid, but can also be applied to other types of tabs.

"Effects of the Invention" The can opening force measuring device according to the present invention can accurately measure the force when pulling up the tab, that is, the can opening force of the can lid, because the direction in which the tab is pulled up matches the rotation direction of the mounting table. can be measured.

[Brief explanation of the drawing]

1 to 3 are diagrams showing an embodiment of the can opening force measuring device according to the present invention, and FIG. 1 is an overall front view of the device;
2 is a side view of the same, FIG. 3 is a plan view of the can opening force measurement unit, and FIG. 4 is a diagram showing an example of a can lid;
FIG. 5 is a side sectional view. Can lid, can lid storage section, conveyance means, can lid positioning section, can opening force measuring section, fixing stand, 52... mounting table, locking member, 56... pressure measuring section.

Claims (1)

[Claims] a can lid storage section that stores a can lid with a tab on the top surface;
a can lid positioning section that sets the can lid in a predetermined orientation; a can opening force measurement section that measures the can opening force of the can lid; and a can lid positioning section and a can lid positioning section that measure the can lid opening force of the can lid; and a conveying means for transporting the can opening force to a can opening force measuring section, and the can opening force measuring section includes a mounting table on which the can lid is placed, which is vertically rotatably provided on a fixed table, and a mounting table on which the can lid is placed on the mounting table. A locking member having a locking protrusion capable of locking the tab of the can lid is provided near the mounting table, and the table is rotated vertically with the tab of the can lid being locked by the locking protrusion. A can-opening force measuring device characterized in that a pressure measuring section for measuring the resistance force by moving the can is provided in conjunction with at least one of the locking member and the mounting table.