JPS5954433A - Method and device for wind-clamping can cover to can end plate - Google Patents

Abstract

PURPOSE:To raise engagement strength of a can end plate and a can cover, and also to raise its tightly sealing property by executing wind-clamping by a ring-like chuck to the outside circumferential face of a rolling-in edge part of the can cover, and a rolling roll to the inside circumferential face of said rolling-in edge part, when sealing tightly the can cover to the can end plate. CONSTITUTION:A chuck 9 is fitted to the outside circumferential face of a rolling-in edge part 3a of a can cover 3. Subsequently, when a torque lever 15 is rotated as shown by a virtual line by moving downward a rotary shaft 12, an inside rolling roll 19 is made eccentric by S0 from the shaft center together with a distance of a moving span S of the lever 15, and a roll shaft 17. As a result, the roll 19 is made to press-contact with the inside circumferential face of a rolling-in edge part 3a as shown by the virtual line, and when the shaft 12 is driven to rotate, the roll shaft 17 becomes eccentric through the lever 15 and executes a rotating motion. Accordingly, the roll 19 supported by the shaft 17 rolls along the inside circumferential face of the edge part 3a, the edge part 3a is sealed tightly to an edge part 2a of a can end plate 2, also caulk-working 3b is performed by a projecting line 19a of the roll 19, and it is wind- clamped firmly. In this regard, after wind-clamping is completed, when a rotation of the rotary shaft 12 is stopped, and subsequently, the shaft 12 is drawn up, the roll 19 is returned onto the shaft center again, and a can be detached.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and a fitting for sealing a can lid to an opening in a can end plate.

Conventionally, there are several methods for attaching the entire can lid to the opening OR of the can end plate which has been seamed with 21 (sealed S construction) to the can body. Mechanical engagement with the can lid is achieved by crimping using a press, and the rubber backing is used to maintain complete airtightness.

However, the above press crimping method has a strong engagement f.
! , (there is a risk that the sealing performance between the two sides cannot be maintained as much as possible.There is also a drawback that the sealing performance between the two cannot be maintained as much as possible.In addition, as a method of 1), the can end is rolled onto the can body, which is carried out on a ship, using a sheet metal compaction roll. Of course, it is possible to do this by tightening the winding, but in this case, since the distance between the can body winding string f and the outer circumference of the can lid is narrow,
1: The quantity of rolls is limited, and there is almost no method of tightening with one roll.

In this invention, the νF? of the can lid to the can end plate? As a method of rolling, a pressure roll is used to tighten the clamp with a radius of 1.2 mm, which increases the strength of the connection between the can end plate and the can.
The overall purpose of this invention is to provide a complete method for sealing can lids on cans that can improve the quality of the product, as well as a method for firing. .

Hereinafter, I will explain and explain the details of IJIJ's IJIJ in detail.

FIG. 1 shows a diagram of the ItI+i river in a state where the can cover is wrapped around the opening of the can end plate, and FIG. 2 also shows a plan view. That is, the can body 1 (taken by the double-sealed structure A), the can y7i: the can y7i: the can y7i, which is pierced by the can body 1; N lη1 38f Seal Packaging 4 (2A 4
1) The wire is tightened to maintain the Wig property. In the example of three can lids, a ring tab 6 is attached to a rivet 7 on the can lid portion on which the score line 5 is formed.

FIG. 3 shows a device for tightening the can end Al 2 and the can lid 3. -7 of casing 8: End G11
At the mouth part, a flange 8a and a two-ring chuck 9 are fixed with bolts 10.
td canned food 30 rolled edge jη [(fitted to the outer circumferential surface of 3a L-
-(IZ). -): Fir: OJ in reprocessing 8
, its center IC shaft bearing is supported by a ring IJ (~A2 rotation shaft 12? 1F, and a rotary disk 13 is provided at the lower end of the shaft). Rotate and move up and down by means! ¥J/'rqn['.

The opposing VC roll plate 14 is arranged on the axis center of the rotation plate 13 and the rotation plate 13 and the roll plate 14 (
-, 1 respectively i-L AC J Ir+) VC installed Uke 1
k13a, +4aEt-gle levers 15 are connected by a pin 16.

And upper i [-: Roll 4 that was applied to the center of the first side of the roll board 14? i+ 171/Kolff-Labea J Nong 18
All parts iL, inner parts l1lr: A roll 19 is supported, and a disk part 20 of the rotating roll 19 can freely slide in a kite groove 21 formed by the casing 8 and the chuck 9. 2
2-Note A retaining lever holding the internal rotation roll 19 is attached to the roll shaft 17 at the port 23 with an ear 94=j.

Next, a method for tightening the entire can eave 3 to the can end plate 2 using the second device will be explained. First, as shown in FIG. 3, the chuck 9 is fitted to the outer peripheral surface of the rolled-up edge 3a of the can lid 3. Move the town spindle 12 once. This rotation 11i
When the toggle lever 15 rotates as shown in the virtual soft line due to the downward movement of 11112, the movement span S of the toggle lever 15 changes.
The inner roll 19 and the roll shaft 17 are eccentric by a distance So from the center of the shaft. As a result, the internal roll 19 comes into pressure contact with the inner circumferential surface of the rolled-up edge 3a of the can lid 3 as shown by the imaginary line. (Rotation 11 in a state like 7)
QI+ 12 When driven full rotation, toggle lever 15k
The roll member 117 rotates eccentrically at the center L2. Therefore, the inner roll 19 supported on the roll shaft 17 rolls along the inner circumferential surface of the rolled edge 3a, and as shown in an enlarged view in FIG. End plate 2-1
”(: t3fl 2 a ffi?J,
Protrusions i 9 a VC, j of internal roll 19: tightly wound with crimping 7JH work 3b75 with L. In addition, after completing the tightening, [i11 Stops the rotation of the rotating shaft 12,
Next, pull up the rotation -11 to 1: the internal rotation roll 19 is pJ
Twist the can into the center of the can. It becomes possible to see ly evening eyes.

In the method for judging can lids of the present invention, the inner circumference iM+ 6 of the rolled edge 3a of the can lid 3 is rotated IF
- Since the inner circumference iri+ of the winding wire portion 3a
Although the inner diameter of a is expanded by rolling, the outer circumferential surface bu is not affected by the rolling. (Therefore, press the inner circumferential surface a1 of the green bar 1X3a, the seal A', the edge 2a of the can lid 2, te'+'li, IJ 憔渭1 can be set.

The above explanation 1~ (/According to the present invention, the sealing of the can lid to the can end I1 can be done by tightening it with a diversion roll, and this makes it possible to seal the can lid to the can end I1. This increases the engagement strength between the can lid and the can lid, and also increases the
-Can be done. (7) The inner rolling roll that rolls the inner circumferential surface of the rolled edge of the can lid is completely used. It is possible to A) with a can lid in a narrow space shape with VcFf11J.
``Since it is an i-structure, it can be manufactured at low cost, and the use of a toggle lever (・A mechanism smaller than τ can provide sufficient tightening strength r1ik!
It has the effect of being able to do 4 things.

4 fMi of the drawing The simple drawing shows one embodiment of the present invention, and Fig. 1 shows a can Q.
A plate-＼Cross-sectional view of the can lid in a sealed state, Figure 2 is l
(1"T' side view, FIG. 3 is a cross-sectional view of the apparatus of the present invention, and FIG. 4 is an enlarged sectional view showing the tightening of the can lid to the can end plate.

2... Can end plate, 2a... Green part, 3... Can jacket, 3a
...Involving Mirinto, 4...Seal backing, 8...
・Casing, 9... Chuck, J2... Rotation 11
+, 13...Naka" turning board, 14...o -/l/
board, 15... toggle lever, 17... roll axis, ]9
...Adduction roll.

Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1) A rolled-up edge 13Ii of the can lid for sealing the opening is arranged on the edge standing up from the opening of the can end plate, and the rolled edge of the can lid is An approximately 1 tal-shaped annular chuck is fully fitted onto the outer peripheral surface of the rolled edge of the can lid, and is rolled by an internal roll along the inner peripheral surface of the rolled edge of the can lid to form the vertical edge of the can end plate. A method for seaming a can end plate to a can end plate, which is characterized by wrapping and sealing the rolled edge of a can bush. 2) An annular chuck of approximately the same shape that fits approximately tightly on the outer peripheral surface of the rolled edge of the can lid is inserted into the lower end opening of the casing;
A manually movable rotary shaft having a rotary disc at its lower end in the center of the casing (-1) A roll disc having a roll shaft at its lower part is connected to the rotary disc via a toggle lever, and Full support of internal roller on this roll spider 1]-1
The inner roller is displaced by the toggle lever during the downward movement of the rotary shaft to center the line from above the shaft center and roll it onto the chuck along the inner circumferential surface of the rolled-up edge of the can lid. ``The can lid is tightly embroidered on the can end plate.