JPH02207934A - Method and device for installing gasket into metallic can cover - Google Patents

Abstract

PURPOSE:To automatically install a gasket into a cover by inserting at least two parts of the gasket into a gasket groove of the can cover, and rolling a pressure roll on the upper face of the gasket. CONSTITUTION:An adhesive agent is applied to the bottom of a gasket groove 3 provided along the outside periphery of a top cover 1. Subsequently, a gasket 7 is sucked in at least two parts by a vacuum sucking pad 25, held, by a transfer frame 23, and inserted into the gasket groove 3. Next, by allowing a pressure bar 83 to descend, the vicinity of the inserted part of the gasket 7 is pressed against the bottom of the gasket groove. Thereafter, by allowing a pressure roll 61 to descend, the upper face of the gasket is held down. In this state, when a turning frame 41 is turned, the pressure roll 61 rolls, while pressing the gasket 7 against the groove bottom, and turns along the gasket groove 3. In such a way, the lower face of the gasket is stuck to the gasket groove bottom.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method and apparatus for attaching a gasket to a metal can lid. This invention is applicable to metal can lids with relatively large capacities ranging from 18 to 400 liters (for example, 200 J
It is used when attaching a gasket to the canopy of an open drum.

[Prior Art] In a metal can with a relatively large capacity and a lid, a gasket is attached to the outer periphery of the lid. The gasket is made of rubber, vinyl, or polyethylene and is ring-shaped. There are various cross-sectional shapes of gaskets, such as circular, semicircular, oval, and square. Metal cans with a relatively large capacity have a gasket groove along the outer periphery of the lid, into which the gasket described above is inserted and attached. Further, the lower surface of the gasket is generally bonded to the bottom of the gasket groove with an adhesive.

Conventionally, in large-capacity metal cans, such as 2002 drum cans, gaskets have been manually installed into gasket grooves provided in the lid because there is no suitable gasket installation device.

[Problems to be Solved by the Invention] For example, in the manufacturing process of 2001 drums, one takt is 5.5 seconds. Furthermore, since the gasket is installed in the gasket groove in a somewhat tight fit, a certain amount of pushing force is required to install the gasket in the gasket groove. Therefore, when manually attaching the gasket as described above, it is quite a heavy labor for the operator, which has been a problem in terms of labor saving. Additionally, the sweat of the workers adhered to the lid, causing the lid to rust.

Therefore, the present invention provides a method and apparatus for attaching a gasket to a metal can lid, which makes it possible to automate the attachment of a gasket to the lid, thereby saving labor, and preventing rust caused by the adhesion of worker sweat. This is what we are trying to provide.

[Means for Solving the Problems] The method of attaching a gasket to a metal can lid of the present invention includes inserting at least two portions of the gasket into the gasket groove,
With the insertion portion of the gasket pressed against the bottom of the gasket groove, a pressure roll is pressed against the upper surface of the gasket and rolled along the gasket groove to push the gasket into the gasket groove.

When inserting a portion of the gasket into the gasket groove and pressing it against the bottom of the gasket groove, it is desirable to insert and press at positions equally spaced in the circumferential direction of the gasket groove. For example, if two places are inserted and pressed, they are spaced 180 degrees along the circumferential direction of the gasket groove, and when three places are inserted and pressed, they are spaced 120 degrees apart.

It is desirable that the range of rolling of the pressure roll along the gasket groove (the yarn turning angle of the pressure roll) extends as far as possible over the entire circumference of the gasket groove. If interference with other members or equipment occurs, roll as much as possible around the entire circumference without causing interference.

When using a plurality of pressure rolls, the pressure rolls are arranged at equal intervals in the circumferential direction of the gasket groove. in this case,
The turning angle of the pressure roll becomes narrower. For example, two pressure rolls are used to roll the gasket groove all around,
When pressing, the turning angle is 130 to 160 degrees.

The pressure roll is rotated back and forth along the circumference of the gasket groove,
The gasket may be repeatedly pressed toward the bottom of the gasket groove. In order to easily and reliably push the gasket into the gasket groove, the support shaft of the press roll may be inclined toward the inner diameter direction of the lid, and the press roll may be rolled. In this case, the appropriate inclination angle of the support shaft of the pressure roll is 1 to 8 degrees. Further, it is preferable that the side surface of the pressure roll facing the center of the lid is brought into contact with the upper edge of the outer periphery of the lid (the upper edge of the surface of the gasket groove on the inner diameter side of the lid). Thereby, it is possible to prevent the gasket from protruding from between the side surface of the pressure roll and the surface of the gasket groove on the inner diameter side of the lid while pushing the gasket.

The apparatus for attaching a gasket to a metal can lid according to the present invention has a pedestal having a gasket placement part and a lid placement part, at least two gasket holding mechanisms, and a gap between the gasket placement part and the lid placement part. Equipped with a gasket holding device that is reciprocably movable and can be raised and lowered, a holding device driving device that moves the gasket holding device reciprocatingly and up and down, and a presser bar that presses the part inserted into the gasket groove against the bottom of the gasket groove. a presser device, a presser device drive device that raises and lowers the presser bar, a rotating member that is rotatable around a vertical axis and is provided on the lid mounting section, a rotating member drive device that rotationally drives the rotating member, and a rotating member that can be raised and lowered. It consists of a press roll attached to the press roll, and a press roll lifting device that lifts and lowers the press roll.

As a gasket holding mechanism, for example, a vacuum suction pad,
A knob or grip mechanism is used.

A fluid pressure cylinder, an electric motor, or a combination of a fluid pressure motor and a transmission mechanism is used as the gasket holding device drive device, the presser device drive device, and the press roll lifting device.

Further, as the rotating member driving device, an electric motor or a combination of a fluid pressure motor and an electric mechanism is used. The electric motor may be a speed control motor. The speed control motor can rotate the pressure roll along the gasket groove at a constant speed. This results in
It is possible to prevent the pressure roll from riding on the gasket due to the rotation speed being too fast, or from reducing work efficiency due to the rotation speed being too slow.

In addition, in the above-mentioned gasket mounting device, gasket mounting can be automated by using a control device.

[Operation] In the method and device for attaching a gasket to a metal can lid of the present invention, at least two portions of the gasket are inserted into the gasket groove. At this time, the other part of the gasket is outside the gasket groove and rests on the top surface of the metal lid.

Next, with the insertion portion of the gasket pressed against the bottom of the gasket groove, a press roll is pressed against the upper surface of the gasket and rolled along the gasket groove. The gasket is pulled between the portion pressed against the bottom of the gasket groove and the press roll, and is also pushed down by the press roll. As a result, the gasket is pushed outward in the outer diameter direction and is pushed into the gasket groove while sliding on the inner circumferential surface of the gasket groove (on the inner diameter side of the lid).

[Example] As an example, a case will be described in which a sponge gasket is attached to the canopy of a 2001 open drum.

First, a gasket mounting device will be explained based on FIGS. 1 to 3, and then a gasket mounting method using this device will be explained. FIG. 1 is a front view of the gasket mounting device, FIG. 2 is a plan view, and FIG. 3 is a side view.

The gasket mounting device mainly includes a pedestal 11, a gasket holding device 21, a holding device driving device 3I, and a rotating frame 4.
1, a rotating frame drive device 51, a press roll 61, a press roll lifting device, a presser device 81, and a control device 91.

The pedestal 11 includes a gasket mounting table 12 and a gasket mounting table 13. A gasket supply stand (not shown) is arranged on the side of the gasket mounting stand 12. The fighting stand 13 is located in the cover line. A guide rail 17 is attached to the central beam 15 of the pedestal 11.

The guide rail 17 extends horizontally from above the gasket mounting table 12 to above the gasket mounting table 13.

The gasket holding device 21 includes a transfer frame 23 attached to the guide rail 17. The transfer frame 23 is placed on the gasket mounting table I along the guide rail 17.
It reciprocates from 2 to the fighting stand I3. Transfer frame 23
Two sets of vacuum suction pads 25 are attached so as to be movable up and down. The vacuum suction pads 25 are positioned obliquely to the guide rail 17 and suction the gaskets 7 at positions 180 degrees apart from each other.

The holding device drive device 31 includes a first air cylinder 33 and a second air cylinder 35. The first air cylinder 33 is mounted along the guide rail 17]1
The transfer frame 23 is reciprocated. The second air cylinder 35 is attached to the transfer frame 23, and is attached to the vacuum J suction pad 23.
Go up and down 5.

The rotating frame 41 is composed of a horizontal member 43 and vertical members 45 extending downward from both ends thereof. Further, a support shaft 47 is rotatably and vertically attached above the struggle stand 13, and a swing frame 41 is fixed to the lower end of the support shaft 47.

The swing frame drive device 5I includes a speed control motor 53 and a bevel gear transmission mechanism 56.

The speed control motor 53 is attached to the pedestal 11 above the pedestal 13. Further, the large gear 57 of the bevel gear transmission mechanism 56 is attached to the support shaft 47, and the small gear 5
8 are fixed to the output shaft 54 of the speed control motor 53, respectively.

The pressure rolls 61 are made of plastic, form a pair, and are attached to the rotating frame 41 so as to be movable up and down.

That is, each of the vertical members 45 of the rotating frame 41 is provided with an elevating bracket 67 that can be moved up and down. The pressure roll 61 is rotatably attached to each of the lifting brackets 67.

The pair of pressure rolls 61 are inclined by 180 degrees in the circumferential direction and are located on the circumference of the gasket groove 3 or the circumferential surface 2 of the lid 1. As shown in FIG. 4, the support shaft of the press roll 61 is inclined toward the inner diameter direction, that is, toward the center of the support table 13. The inclination angle is 5 degrees. Further, when the press roll 61 rotates along the circumference of the gasket groove 3, as shown in FIG.
is brought into contact with the upper edge of the peripheral surface 2 of Ml. therefore,
Since the center portion of the tip surface 63 contacts the circumferential surface 2 of the lid 1, the center portion of the tip surface 63 is shallowly recessed so as to escape from the circumferential surface 2 of the lid 1. Note that the rear part 65 of the pressure roll 61 rotates in contact with the outer edge 5 of the gasket groove 3, but the front part 62 has a slightly larger diameter than the rear part 65 so that the front part 62 of the pressure roll 61 can press the gasket upper surface 7. It becomes.

The press roll lifting device 71 consists of a third air cylinder 73 attached to the vertical member 45 of the rotating frame 41. The lifting bracket 67 is connected to the rod of the third air cylinder 73.

The old presser device consists of a presser bar 83 and a fourth air cylinder 85 that raises and lowers the presser bar 83. Two sets of presser devices 81 are attached diagonally to the center beam 15 of the pedestal 11.

The control device 91 includes a photoelectric switch 93, a proximity switch 95, and a sequence controller 97. A photoelectric switch 93 is provided on the gasket mounting table 12 and detects the gasket 7 sent from a gasket supply table (not shown). Further, the proximity switch 95 is provided on the support stand 13, detects the transfer frame 23 that has come to the support stand 13, and detects that the gasket 7 has been transferred from the gasket a support stand I2 to the M support stand 13. ° from photoelectric switch 93 and proximity switch 95
The signal is manually input to the sequence controller 97.

Next, a method of mounting a sponge gasket 7 into the gasket groove 3 of the canopy 1 of a 200IL open drum using the gasket mounting device configured as described above will be described.

First, the first air cylinder 33 is driven, and the transfer frame 2
:I is the gasket mounting table! Position it directly above 2. At this time, the canopy 1 has been transferred from the previous process to the storage stand 13 by a roller conveyor (not shown). An adhesive is applied to the gasket groove bottom 4.

In this state, the roller conveyor moves the gasket from the gasket supply table (none of which is shown) to the gasket placement table 1.
Insert gasket 7 into 2. When the photoelectric switch 93 detects the gasket 7 sent to the gasket mounting table 12, the second air cylinder 35 is activated in response to a command from the sequence controller 97 to remove the vacuum suction pad 2.
5 descends. Then, the vacuum suction pad 25 suctions the gasket 7 at one and two locations 180 degrees apart, and rises to F. Next, the first air cylinder 33 is activated, and the transfer frame 23 holding the gasket 7 comes to be directly above the support stand 13.

When the proximity switch 95 detects that the transfer frame 23 has come directly above the fighting stand 13, the second air cylinder 35 is actuated to lower the vacuum suction pad 25, and the suctioned portion of the gasket 7 is placed in the gasket groove of the canopy 1. Insert within 3.

Once the gasket 7 is inserted into the gasket groove 3,
Immediately, the fourth air cylinder 85 is activated, and the presser bar 83 descends to press the gasket 7 near the inserted portion against the gasket groove bottom 4. When this pressing is completed, the suction of the gasket 7 is released. Then, the second cylinder 35 operates and the vacuum eye pad 25 is activated.
The first cylinder 33 is further activated, and the transfer frame 23 is retreated to above the gasket mounting table 12.

In this state, the other portion of the gasket 7 is located outside the gasket groove 3 and rests on the upper surface of the canopy 1.

Then, the third air cylinder 73 is activated, and the pressure roll 6
1 comes down and presses the upper surface 8 of the gasket. In this state, the speed control motor 53 operates,
The rotating frame 41 rotates 145 degrees around the support shaft 47. As a result, the pressure roll 61 rolls while pressing the gasket 7 against the groove bottom 4 and turns along the gasket groove 3. As shown in FIG. 5, the gasket door is pulled between the pressure roll 61 and the portion pressed against the gasket groove bottom 4 by the presser bar 83, and is also pushed down by the pressure roll 61. As a result, gasket 7
is pushed outward in the outer diameter direction, and the gasket groove 3
It is pushed into the gasket groove 3 by sliding on the inner circumferential surface (inner diameter side of the lid). The rotating frame 11 is 145
Once it has made a 145 degree turn, it will make another 145 degree turn in the opposite direction and return to its original position. The reason why the turning angle is 145 degrees instead of 180 degrees is to prevent the press roll 61 from hitting the presser bar 83. As the pressure roll 61 rolls, the lower surface of the gasket is adhered to the gasket groove bottom 4.

The inner diameter d (see FIG. 4) of the gasket 7 is made to be slightly smaller than the diameter of the circumferential surface 2 of the top 1 so that the gasket 7 fits tightly into the gasket groove 3. Therefore, when the gasket 7 is inserted into the gasket groove 3 using the vacuum suction pad 25, the inner diameter side of the gasket 7 tends to rise. However, as described above, since the pressure roll 61 is inclined, a force that pulls the gasket 3 in the gasket groove 3 toward the outer diameter side acts. As a result, the gasket 7 is prevented from floating.

When the press roll 6I finishes pushing the gasket 7 into the gasket groove 3, the third air cylinder tuff 3 and the fourth air cylinder 85 are activated to pull up the press roll 51 and the presser bar 83.

All of the above operations are controlled by the sequence controller 97.

The present invention is not limited to the above-described embodiment; for example, the operator may monitor the movement of the gasket and the operating state of the device, and operate a switch on the operation panel to perform the gasket installation work.

[Effects of the Invention] In the method and device for attaching a gasket to a metal can lid of the present invention, the insertion and pushing of the gasket into the gasket groove can be performed mechanically without manual effort. Therefore, it is possible to automate the installation of gaskets on the lid.
Labor saving can be achieved. Further, it is possible to reduce the labor of the worker and prevent rust caused by adhesion of sweat.

[Brief explanation of the drawing]

Figures 1 to 3 show embodiments of this invention.
The figure is a front view of the gasket mounting device, FIG. 2 is a plan view, FIG. 3 is a side view, FIG. 4 is a longitudinal cross-sectional view showing the gasket being pressed by a pressure roll in the device, and FIG. FIG. 2 is a plan view showing a state in which a gasket is being pushed into a gasket groove by a pressure roll. 1... Canopy, 3... Gasket groove, 7... Gasket, 1j... Mount, j2... Gasket mounting stand,
] 3... Fighting stand, 17... Kite rail, 21.
...Gasket holding device, 23...Transfer frame, 2
5... Vacuum suction pad, 31... Holding device drive device, 33... First air cylinder, 35... Second air cylinder, 4! ...Swivel frame, ear...support shaft,
51... Rotating frame drive device, 53... Speed control motor, 56... Bevel gear transmission mechanism, 6
1... Press roll, 67... Lifting bracket, 71
...press roll lifting device, 73...third air cylinder, 81...presser device, 83...presser bar, 85...
・Fourth air cylinder, 91...control device, 93...
Photoelectric switch, 95...Proximity switch, 97...
Sequence con [・roller.

Claims (1)

[Claims] 1. In a method of attaching a gasket to a lid by inserting a flexible ring-shaped gasket into a gasket groove provided along the outer periphery of the lid, at least two portions of the gasket are attached to the gasket. The metal is inserted into a groove, and with the inserted portion of the gasket pressed against the bottom of the gasket groove, a press roll is pressed against the upper surface of the gasket and rolled along the gasket groove to push the gasket into the gasket groove. How to attach a gasket to a can lid. 2. A pedestal having a gasket placement part and a lid placement part, a liftable gasket having at least two gasket holding mechanisms, and provided so as to be able to reciprocate between the gasket placement part and the lid placement part. A holding device, a gasket holding device drive device that reciprocates and raises and lowers the gasket holding device, a presser device equipped with a presser bar that presses a portion partially inserted into the gasket groove against the bottom of the gasket groove, and a presser device drive device that raises and lowers the presser bar. , a rotating member that is rotatable around a vertical axis and provided on the lid mounting portion, a rotating member drive device that rotationally drives the rotating member, a press roll that is attached to the rotating member so that it can be raised and lowered, and a press roll that lifts and lowers the press roll. A device for attaching gaskets to metal can lids, consisting of a press roll lifting device.