JPH02274334A - Device for seaming can cover - Google Patents

Abstract

PURPOSE:To simplify the constitution of a device by continuously providing locking parts to lock the upper edge of a can cover on the downstream of a position where the can cover of a seaming loop is seamed completely, elevating a seaming chuck when the can cover passes the locking part and separating it from the can cover. CONSTITUTION:The can cover Y is held by the seaming chuck 11 and rolls along seaming rails 5, 6. The can cover Y is pressed in contact with seaming loops 5a, 6a of the seaming rails and seamed with a can container X. The completely seamed can cover is freed from thew pressurization by the seaming loops and rolled along the locking part 6b. The locking part 6b locks the upper edge of the can cover from the end position of seaming. At this time the seaming chuck is elevated. The can cover which is rolled with its upper edge locked is inhibited from following the upward seaming chuck and the seaming chuck only is elevated. By this method, the can cover can be separated easily from the seaming chuck.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a can lid tightening device for tightening a can lid onto a can container.

(Prior Art) Conventionally, a device for wrapping a can lid around a cylindrical can container includes a can container conveying means for rotatably holding and conveying the can container, and a can container conveying means for rotatably holding and conveying the can container; A can lid conveying means including a seaming chuck that holds the lid so that it can be raised and lowered and rotated; and a seaming groove that rolls the can lid along with the can container along the conveying direction of the can lid and wraps it around the can container. It is known that the seaming rail is equipped with a seaming rail.

When the can lid is tightened to the can container with this type of tightening device,
The can lid that is tightly held by the seaming chuck will become even more tightly attached to the seaming chuck due to the pressure received from the seaming groove during seaming, making it difficult to remove the can lid from the seaming chuck after seaming. There was an inconvenience.

Therefore, as seen in Japanese Patent Application Laid-Open No. 64-18538, a knockout pad is provided inside the seaming chuck, and the can lid is removed from the seaming chuck by vertical movement of the knockout pad.

However, incorporating the knockout pad inside the seaming chuck has the disadvantage of complicating the configuration of the device.

(Problems to be Solved by the Invention) To solve the above-mentioned inconveniences, the present invention provides a can lid seaming device that can easily remove the can lid from the seaming chuck after seaming the can lid. The purpose is to provide a simple structure.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a device for wrapping a can lid around a cylindrical can container, and a device for rotatably holding and transporting a can container. a container conveying means; a can lid conveying means including a seaming chuck that holds the can lid in a vertically movable and rotatable manner; In a can lid seaming device comprising a seaming rail equipped with a seaming groove for seaming around a container, a locking device that locks the upper edge of the can lid downstream of the seaming groove at a position where seaming of the can lid is completed. The sealing chuck is characterized in that the seaming chuck is separated from the can lid by raising the seaming chuck at a position where the can lid passes through the locking portion.

(Operation) According to the above means of the present invention, the can lid is first held by the seaming chuck and rolls along the seaming rail. At this time, the can lid is pressed into contact with the seaming group of the seaming rail and is tightened around the can container. The can lid, which has been completely seamed, is released from the pressure of the seaming groove and rolls along the locking portion. The locking portion locks the upper edge of the can lid from the tightening completed position. At this point, raise the seaming chuck.

The can lid, which rolls while being locked at its upper edge, is prevented from following the rising seaming chuck, and only the seaming chuck rises.

(Example) Next, an example of implementation of the present invention will be explained in detail based on the drawings. This embodiment shows a seaming device according to the present invention, which is a seaming device that seams can containers and can lids while linearly conveying them.

Fig. 1 is a schematic diagram showing the entire can lid manufacturing apparatus including the apparatus of the present invention, Fig. 2 is an explanatory enlarged plan view of a part of the apparatus of the present invention, and Fig. 3 is the line ■-■ of Fig. 2. 4 is a partially enlarged explanatory diagram of FIG. 2, FIG. 5 is an explanatory diagram of an enlarged cross section taken along the ■-V line in FIG. 4, and FIG.
FIG. 3 is an explanatory diagram showing an enlarged cross section of a line.

As shown in the first diagram, this embodiment device A double-seals a can lid Y to a can container X that is continuously supplied from a filling device B that fills the can container X with contents.

(2) is a first can/container conveying means that conveys the can/container X filled with the contents supplied from the filling device B linearly and horizontally at a predetermined speed; A second can/container conveying means for conveying X; 3 is the second can/container conveying means 2;
4 is a can lid holding means for holding the can lid Y on the can lid transport means 3; 5 is a can lid holding means for holding the can lid Y on the can lid transport means 3; A first seaming rail 6 is provided parallel to the transport direction of the outgoing route for linearly transporting the can container The second seaming rails are shown in parallel.

As shown in the first diagram, the first can/container transport means 1 is provided so as to extend linearly from the discharge position of the filling device B and run parallel to the second can/container transport means 2.

The first can/container conveying means 1 includes claw pieces 7 which are rotatably arranged at equal intervals and grip the body of the can/container X from the front and back in the conveyance direction. The claw piece 7 is provided so as to be swingable in the vertical direction, and can release the can container X from being held. When tightening the can lid Y onto the can container X, as shown by the solid line in Figure 3,
The claw piece 7 comes into contact with the rail 8, moves t, and releases the engagement with the can container X.

The first can/container conveying means 1 is provided with a support plate 9 that horizontally supports the can/container X, and the claw pieces 7 driven by a drive device (not shown) hold the can/container X on the support plate 9. It is transported by sliding. The support plate 9 is cut away at a portion 10 parallel to the first seaming rail 5, and as will be described later, in this region the can X is supported and conveyed by the second can conveying means 2.

As shown in the third diagram, the can lid conveying means 3 includes a rotatable and movable can lid holding means 4 equipped with a seaming chuck 11 for holding the can 1iY, and can hold the can on the outer periphery of the can lid holding means 4. A rotational drive means 12, which will be described later, is provided for rotationally driving the lid Y.

As shown in the third diagram, the second can container conveying means 2 includes a can container X.
A support table 13 is provided as a support section on which the can lid is placed and rotatably supported, and a rotary drive means 14 having the same structure as the rotary drive means 12 provided in the can lid holding means 4 is provided on the outer periphery of the support table 13. Equipped with

The can lid conveying means 3 is provided integrally with the second can/container conveying means 2 at an upper portion facing the second can/container conveying means 2 by means of a conveying block 15 which will be described later.

The transport block 15 is rotatably provided on an endless chain 16 that rotates endlessly in a substantially elliptical shape, with a large number of transport blocks 15 connected to each other at intervals. The conveying block 15 is rotated in the same direction and at the same speed at a position parallel to the first can/container conveying means 1. As shown in the figure, on the side parallel to the first can/container conveying means 1, the conveying block 15 approaches in an arc shape and moves in parallel with the conveying direction of the first can/container conveying means 1 as a tangential line. Further, it is disposed so as to move away from the first can/container conveying means 1 in an arc shape, and runs parallel to the first can/container conveying means 1 at the cutout portion 10 of the support plate 9 described above.

In FIG. 1, 17 is a can lid supply turret that supplies cans NY to the can lid conveying means 3, and 18 is a device that supplies cans 1y to the can lid supply turret 17.

The conveyance block 15 includes a support portion 19 formed into a U-shape when viewed from the side as shown in the third diagram, and the support portion 19 is detachably fixed to the endless chain 16.

Furthermore, a can lid holding means 4 is provided on the upper part of the support part 19. The can lid holding means 4 is rotatably provided at the lower end of a support shaft 20 hanging down from above, and a cam roller 21 provided on the upper side of the support shaft 20 is guided by a cam rail 22 (described later) to move up and down. The can lid holding means 4 is configured to move up and down accordingly. The can lid holding means 4 is equipped with a seaming chuck U.

A support table 13 for the can and container X, which functions as the second can and container transport means 2 described above, is provided at the lower part of the support section 19 . The table 13 is rotatably mounted on a support shaft 23 coaxial with the support shaft 20 of the can lid holding means 4 .

The conveyance block 15 is supported by a rail plate 26, which will be described later, by guide rollers 24 and 25 provided vertically opposite each other approximately in the center of the back side of the support portion 19, and also by a pair of guide rollers 24 and 25 provided at the top and bottom of the back side. Rollers 27, 28 are supported by rolls 29, 30 with guide grooves.

Each of the conveyor blocks 15 includes an endless chain 16 in which the lower back surfaces of the supporting parts 19 are connected to each other as shown in FIG. It is driven by a drive device (not shown).

Each transport block 15 is guided along mutually connected endless rail plates 26 and likewise endless rails 29, 30, as shown in the second figure.

The rail plate 26 allows each conveying block 15 to approach each other in an arc shape on its outward path, with the conveying direction of the first can/container conveying means l as a tangent line, as described above, and furthermore, it approaches the conveying blocks 15 in a straight line at the cutout portion 10 of the support plate 9. parallel to the first can/container conveying means 1 that moves in a straight line, then guided in an arc shape away from the first can/container conveyance means 1, further guided in a straight line on the return trip, and guided in an arc shape on the outward trip. do.

The cam rail 22 is a position where the cam roller 21 of the conveying block 15 moves as shown in FIGS. It is set in. The cam rail 22 guides the cam roller 21 in the conveyance direction of the conveyor roller 15, and also guides the seaming chuck 11 up and down via the support shaft 20 on which the cam roller 21 is provided.

As shown in the second figure, the first seaming rail 5 is provided in a straight line corresponding to the position where the conveyance block 15 runs parallel to the cutout portion 10 of the support plate 9 along the rail plate 26. . As shown in FIGS. 1 and 2, the first seaming rail 5 attaches a can lid to a flange portion of the can container X on the outward path side where the can container X is linearly conveyed by the second can container conveying means 2. A first seaming group 5a is provided for seaming the Y end hook portion. As shown in the fourth figure, the second seaming rail 6 includes a second seaming group 6a on the return path side where the cans, X, are linearly conveyed by the second can and container conveying means 2. Further, the second seaming rail 6 includes a locking portion 6b that is connected downstream from the position where the second seaming group 6a releases the pressure contact of the can lid.

As shown in the third diagram, the seaming chuck 11 of the can lid holding means 4 and the support table 13 of the second can container conveying means 2 hold the can container X and the can NY together when they are held between them. A rotation driving means 12.14 is provided for rotating and rolling the flange portion and the end hook portion of both of them in a state in which they are in pressure contact with the first seaming rail 5 and the second seaming rail 6.

As shown in the third diagram, the rotational drive means 12 is configured to engage with a first pinion gear 40 provided on the entire upper circumference of the seaming chuck 11, and the first seaming rail 5 and the first pinion gear 40. 2 and a linear first rack 41 provided along the seaming rail 6. The rotation drive means 14 includes a second pinion gear 42 provided coaxially with the support shaft 23 of the support table 13, and a second pinion gear 42 that extends along the first seaming rail 5 and the second seaming rail 6 so as to be able to mesh with the second pinion gear 42. A linear second rack 43 is provided.

Therefore, as shown in FIGS. 2 and 3, when each of the conveying blocks 15 moves along the first seaming rail 5 and the second seaming rail 6, the first pinion gear 4
The seaming chuck 1 and the second pinion gear 42 rotate while meshing with the first rack 4I and the second rack 43, respectively.
1 and the support table 13 are rotationally driven. When the seaming chuck 11 and the support table 13 rotate, the can By and the can container X held therebetween are rotated.

The operation of the present embodiment device A having the above-described configuration will be explained next.

After the can container X is filled with contents by the filling device B, the can container
As shown in the figure, the cans are held between the claws 7 of the first can and container conveying means 1 from the front and rear sides in the conveying direction, and are slid and conveyed linearly on the support plate 9.

On the other hand, the can lid Y is supplied from the can lid supply device 18, and the can 1vI of each transport block 15 is supplied by the can lid supply turret 17.
i is supplied to the feeding means 3. At the receiving position of the supplied can MY, the can 1y is held by the can lid holding means 4.

A transport block 15 holding a can lid Y on the can lid holding means 4
is then rotated by the endless chain 16 which rotates in a substantially elliptical shape, and enters an arcuate orbit from the linear orbit. Eventually, the conveyance direction of the second can/container conveying means 2 enters a linear trajectory that becomes the outward path.

The conveying block 15 gradually approaches the first can/container conveying means 1 and is moved to a position parallel thereto.

At this time, the cans X transported by the first can and container transport means 1 are held by the pair of claws 7 from the front and back in the transport direction, and are brought to the second can and container transport means at the position of the cutout part 10 of the support plate 9. It is transferred to the support table 13 of No. 2. Then, the can container X is held on the support table 13 while being retained on the claw piece 7
placed on top. When the receiver is securely transferred to the second can/container conveying means 2, the claw q comes into contact with the rail 8 and moves upward to release the can/container X, as shown in the third figure. Ru.

- When the can container
1, and the first pinion gear 40 meshes with the first rack 41.
meshes smoothly.

In this process, the can lid holding means 4 of the can lid conveying means 3 is lowered by the cam rail 22 via the cam roller 21. At this time, the first pinion gear 40 and the first rack 4
1 is lowered while remaining engaged. The can 1iY held by the can lid holding means 4 is placed over the can container X on the support table 13.

Further, when the transport block 15 transports the can 1iY and the can container X and rotates, the seaming chuck 1 of the can lid holding means 4
The support table 13 of the first and second can/container conveying means 2 rotates in synchronization with the conveyance speed, thereby rotating the can MY and the can/container X. Then, on the outward path of the second can/container conveying means 2, the can MY and the can/container X are conveyed linearly while being rotated, and at the same time the third
As shown in the figure and the fourth figure, the end hook part of can iY is the first
The can lid Y is rolled while being pressed against the seaming rail 5, thereby tightening the can lid Y.

Thereafter, when the transport block 15 leaves the transport direction of the first can/container transport means 1, the can/container X with the can lid Y already tightened is transported by the second can/container transport means 2 of the transport block 15. . Then, while being held between the can lid holding means 4 and the support table 13, the can container X and the can iY are transported linearly by the transport block 15, and at the same time, as shown in FIG. While being rotated, it rolls while being pressed against the second seaming group 6a of the second seaming rail 6, thereby reliably seaming the can container X and the can lid Y. The can IY is then released from the pressure of the second seaming group 6a from its final position. Here, as shown in FIGS. 4 to 6, the can lid Y rolls while being locked at its upper edge by the locking portion 6b. At the same time, the seaming chuck 11 holding the can MY is guided by the cam rail 22 via the cam roller 21 and begins to rise, and is separated from the can By whose upper edge is locked by the locking portion 6b. Ru. As a result, the can N is placed inside the seaming chuck 11 as in the conventional case.
It is possible to detach from the can iY with a simple structure without providing a knockout pad or the like for detaching the can.

Thereafter, the can lid Y is completely tightened, the can IIY is removed from the seaming chuck 11, the can container X is smoothly transferred to the carry-out turret 43, and is carried out from the carry-out path 45 by the carry-out turret 44. Ru.

(Effects of the Invention) As is clear from the above, the locking portion locks the upper edge of the can lid from the seaming completion position and prevents the seaming chuck from rising from that position. By rolling, the can lid that rolls while being locked at the upper edge is prevented from following the rising seaming chuck, so the can lid can be easily separated from the seaming chuck. .

Therefore, according to the present invention, the can lid can be separated from the seaming chuck without incorporating the knockout butt' into the seaming chuck as in the conventional method, and the device can be easily configured for seaming the can lid. equipment can be provided.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the entire can lid manufacturing apparatus including the apparatus of the present invention, Fig. 2 is an explanatory enlarged plan view of a part of the apparatus of the present invention, and Fig. 3 is the line ■-■ of Fig. 2. 4 is a partially enlarged explanatory diagram of FIG. 2, FIG. 5 is an explanatory diagram of an enlarged cross section taken along line V-V in FIG. 4, and FIG. FIG. 3 is an explanatory diagram showing an enlarged cross section of a line. X... Can container, Y... Can lid, 1.2... Can container conveyance means, 3... Can lid conveyance means, 11... Seaming chuck, 5.6... Seaming Rail, 5a, 6a...Group, 6b...Locking part.

Claims (1)

[Claims] 1. A device for wrapping a can lid around a cylindrical can container, and a can container conveying means for rotatably holding and conveying the can container;
A can lid conveying means including a seaming chuck that holds the can lid so as to be able to move up and down and freely rotate; and a seam that rolls the can lid together with the can container along the conveying direction of the can lid and wraps the can lid around the can container. In a can lid seaming device comprising a seaming rail having a seaming groove, a locking portion for locking the upper edge of the can lid is provided downstream of the seaming groove at a position where seaming of the can lid is completed. A can lid seaming device characterized in that a seaming chuck is raised and separated from the can lid at a position where the can lid passes through the locking portion.