JP2698146B2 - Method and apparatus for attaching gasket to metal can lid - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for mounting a gasket on a metal can lid. INDUSTRIAL APPLICABILITY The present invention is used when a gasket is mounted on a relatively large metal can lid having a capacity of 18 to 400 (for example, a canopy of a 200 open drum can).

[Related Art] In a metal can having a relatively large capacity and a lid, a gasket is attached near an outer peripheral edge of the lid. The gasket is made of rubber, vinyl or polyethylene,
It has a ring shape. The gasket has various cross-sectional shapes such as a circle, a semicircle, an ellipse, and a square. In a metal can having a relatively large capacity, a gasket groove is provided along the outer peripheral edge of the lid, and the gasket as described above is inserted and mounted therein. Generally, the lower surface of the gasket is bonded to the bottom of the gasket groove with an adhesive.

Conventionally, in a large-capacity metal can, for example, a 200-drum can, a gasket is manually mounted in a gasket groove provided in a lid because there is no appropriate gasket mounting device.

[Problems to be solved by the invention] For example, in the manufacturing process of 200 drums, one tact
5.5 seconds. Also, since the gasket is mounted in the gasket groove with a slight interference fit, a certain amount of pushing force is required to mount the gasket in the gasket groove. Therefore, when installing the gasket by hand as described above, the worker is considerably hard labor,
This was a problem in terms of labor saving. Further, the sweat of the worker adheres to the lid, causing the lid to rust.

Therefore, the present invention provides a method and an apparatus for mounting a gasket on a metal can, which makes it possible to automate the mounting of the gasket on the lid, thereby saving labor and preventing rust due to the adhesion of sweat of the worker. It is something to offer.

[Means for Solving the Problems] In the method of mounting a gasket on a metal can lid according to the present invention, at least two portions of a gasket are inserted into a gasket groove, and the inserted portion of the gasket is pressed against the bottom of the gasket groove. Then, the pressing 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 a part of the gasket is inserted into the gasket groove and pressed against the bottom of the gasket groove, it is desirable that the gasket be inserted and pressed at equal intervals in the circumferential direction of the gasket groove. For example, when inserting and pressing two places, at 180 ° intervals along the circumference of the gasket groove,
In the case of a part, insert it at an interval of 120 degrees and press it.

It is desirable that the rolling range (swing angle of the pressing roll) of the pressing roll along the gasket groove extends over the entire circumference of the gasket groove as far as possible. If interference occurs with other members or devices, the roller is rolled over the entire circumference as far as possible without causing interference. When using multiple pressing rolls,
The pressing rolls are arranged at equal intervals in the circumferential direction of the gasket groove. In this case, the turning angle of the pressing roll becomes narrow. For example, when rolling and pressing the gasket groove over the entire circumference using two pressing rolls, the turning angle is 130 °.
~ 160 degrees. The pressing roll may be reciprocated along the circumference of the gasket groove to repeatedly press the gasket toward the bottom of the gasket groove. To make the gasket easy to invite into the gasket groove and push it in securely,
The pressing roll may be rolled by tilting the support shaft of the pressing roll toward the inner diameter direction of the lid. In this case, the inclination angle of the support shaft of the pressing roll is suitably 1 to 8 degrees. Further, it is preferable that the side surface of the pressing 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 gasket groove on the inner diameter side of the lid). Thus, it is possible to prevent the gasket from protruding from between the side surface of the pressing roll and the surface of the gasket groove on the inner diameter side of the lid during the pressing of the gasket.

The gasket mounting apparatus for a metal can lid according to the present invention has a gantry having a gasket mounting portion and a lid mounting portion, and has at least two gasket holding mechanisms, and provides a space between the gasket mounting portion and the lid mounting portion. A reciprocatingly movable elevating gasket holding device, a holding device driving device for reciprocating and elevating the gasket holding device, and a holding device having a holding rod for pressing a part of the gasket groove partially inserted into the gasket groove bottom. A presser device driving device that raises and lowers a presser bar, a turning member that is rotatable around a vertical axis and is provided on the lid mounting portion,
It comprises a turning member driving device for rotating and driving the turning member, a pressing roll attached to the turning member so as to be able to move up and down, and a pressing roll elevating device for moving the pressing roll up and down.

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

A fluid cylinder, an electric motor, or a combination of a fluid pressure motor and a transmission mechanism is used as the gasket holding device driving device, the pressing device driving device, and the pressing roll elevating device.

Further, an electric or combination of a fluid pressure motor and an electric mechanism is used as the turning member driving device. The electric motor may be a speed control motor. The speed control motor can rotate the pressing roll along the gasket groove at a constant speed. Accordingly, it is possible to prevent the pressing roll from riding on the gasket due to the excessively high turning speed, or to reduce the work efficiency due to too low a rotating speed.

In the above-described gasket mounting apparatus, the use of the control device enables the gasket mounting to be automated.

[Operation] In the method and apparatus for mounting a gasket on a metal can lid according to the present invention, at least two portions of the gasket are inserted into the gasket grooves. At this time, the other part of the gasket is outside the gasket groove and rests on the upper surface of the metal lid. Next, with the insertion portion of the gasket pressed against the bottom of the gasket groove, the pressing roll is pressed against the upper surface of the gasket to roll along the gasket groove. The gasket is pulled between the portion pressed against the gasket groove bottom and the pressing roll, and is pressed down by the pressing roll. As a result, the gasket is pushed and spread in the outer diameter direction, and is pushed into the gasket groove so as to slide on the inner peripheral surface of the gasket groove (inner diameter side of the lid).

[Example] As an example, a case in which a sponge gasket is attached to a canopy of a 200 oven drum can be described. First, a gasket mounting device will be described with reference to FIGS. 1 to 3, and then a gasket mounting method using this device will be described. 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 gantry 11, a gasket holding device 21, a holding device driving device 31, a revolving frame 41, a revolving frame driving device 51, a pressing roll 61, a pressing roll elevating device 71, a pressing device 81, and a control device 91. ing.

The gantry 11 includes a gasket mounting table 12 and a lid mounting table 13. A gasket supply table (not shown) is arranged on the side of the gasket mounting table 12. The lid mounting table 13 is located in the lid pressure line. A guide rail 17 is attached to a center beam 15 of the gantry 11. The guide rail 17 extends horizontally from above the gasket mounting table 12 to above the lid mounting table 13.

The gasket holding device 21 has a transfer frame 23 attached to the guide rail 17. Transfer frame 23
Reciprocates from the gasket mounting table 12 to the lid mounting table 13 along the guide rail 17. Two sets of vacuum suction pads 25 are attached to the transfer frame 23 so as to be able to move up and down. The vacuum suction pad 25 is positioned obliquely with respect to the guide rail 17, and suctions the gasket 7 at a position 180 degrees apart from each other.

The holding device driving device 31 includes a first air cylinder 33 and a second air cylinder 35. 1st air cylinder
33 is a lid mounting table of the gantry 11 along the guide rail 17
13 and reciprocates the transfer frame 23. The second air cylinder 35 is attached to the transfer frame 23, and moves up and down the vacuum suction pad 25.

The revolving frame 41 includes a horizontal member 43 and vertical members 45 extending downward from both ends thereof. Also,
A support shaft 47 is rotatably and vertically mounted above the lid mounting table 13, and a turning frame 41 is fixed to a lower end of the support shaft 47.

The turning frame driving device 51 includes a speed control motor 53 and a bevel gear transmission mechanism 56. The speed control motor 53 is mounted on the base above the lid
It is attached to 11. The large gear 57 of the bevel gear transmission 56 is fixed to the support shaft 47, and the small gear 58 is fixed to the output shaft 54 of the speed control motor 53.

The pressing rolls 61 are made of plastic and form a pair, and are attached to the turning frame 41 so as to be able to move up and down. That is, the lifting bracket 67 is provided on each of the vertical members 45 of the revolving frame 41 so as to be able to move up and down. Press roll 61
Are rotatably attached to each of the lifting brackets 67. The pair of pressing rolls 61 are circumferentially 18
0 degrees apart, gasket groove 3 or peripheral surface 2 of lid 1
It is located on the circumference of. The support shaft of the pressing roll 61 is inclined toward the inner diameter direction, that is, toward the center of the lid mounting table 13, as shown in FIG. The inclination angle is 5 degrees. In addition, when the pressing roll 61 rotates along the circumference of the gasket groove 3, as shown in FIG.
64 is in contact with the upper edge of the peripheral surface 2 of the lid 1. Therefore, the portion of the tip surface 63 near the center contacts the peripheral surface 2 of the lid 1, and the portion of the tip surface 63 near the center is shallowly recessed so as to escape from the peripheral surface 2 of the lid 1. The rear portion 65 of the pressing roll 61 rotates while contacting the outer edge 5 of the gasket groove 3.
The front part 62 has a slightly larger diameter than the rear part 65 so that the front part 61 of the pressing roll 61 can press the gasket upper surface 7.

The pressing roll elevating device includes a third air cylinder 73 attached to the vertical member 45 of the revolving frame 41. The lifting bracket 67 is connected to a rod of the third area cylinder 73.

The presser device 81 is a fourth member for raising and lowering the presser bar 83 and the presser bar 83.
It consists of an air cylinder 85. Further, two sets of holding devices 81 are obliquely attached to the center beam 15 of the gantry 11.

The control device 91 includes a photoelectric switch 93, a proximity switch 95, and a sequence controller 97. The photoelectric switch 93 is provided on the gasket mounting table 12, and receives the gasket 7 sent from the gasket supply table (not shown).
Is detected. The proximity switch 95 is provided on the lid mounting table 13, detects the transfer frame 23 coming to the lid mounting table 13, and moves the gasket 7 from the gasket mounting table 12 to the lid mounting table 13.
It is detected that it has been transferred to. The signals from the photoelectric switch 93 and the proximity switch 95 are sent to the sequence controller.
Entered in 97.

Next, a method of mounting the gasket 7 made of sponge in the gasket groove 3 of the canopy 1 of the 200 open drum can by using the gasket mounting apparatus configured as described above will be described.

First, the first air cylinder 33 is driven, and the transfer frame 23 is moved.
Is positioned directly above the gasket mounting table 12. At this time,
The canopy 1 has been transferred from the previous process to the lid mounting table 13 by a roller conveyor (not shown). Gasket groove bottom 4
Is coated with an adhesive.

In this state, the gasket mounting table 12 (both not shown) is moved from the gasket mounting table 12 by a roller conveyor.
Gasket 7 is sent. If the photoelectric switch 93 detects the gasket 7 sent to the gasket mounting table 12, the second signal is sent from the sequence controller 97.
The air cylinder 35 operates to lower the vacuum suction pad 25. Then, the vacuum suction pad 25 suctions the gasket 7 at two places separated by 180 degrees and rises. Next, the first air cylinder 33 is operated, and the transfer frame 23 holding the gasket 7 comes directly above the lid mounting table 13.

When the proximity switch 95 detects that the transfer frame 23 is just above the lid mounting table 13, the second air cylinder 35 operates to lower the vacuum suction pad 25, and the suctioned portion of the gasket 7 is moved to the top cover 1. Insert into gasket groove 3. As soon as the gasket 7 is inserted into the gasket groove 3,
The fourth air cylinder 85 is actuated, the presser bar 83 descends, and the vicinity of the above-mentioned insertion portion of the gasket 7 is moved to the gasket groove bottom 4.
And press it down. When the pressing is completed, the suction of the gasket 7 is released. Then, the second cylinder 35 operates to raise the vacuum suction pad 25, and further the first cylinder 33 operates to move the transfer frame 23 back above the gasket mounting table 12. In this state, the other portion of the gasket 7 is outside the gasket groove 3 and rests on the upper surface of the canopy 1.

Then, the third air cylinder 73 operates, and the pressing roll 61
Comes down and presses the gasket upper surface 8. In such a state, the speed control motor 53 operates, and the turning frame 41 turns 145 degrees around the support shaft 47. Thus, the pressing 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 7 is pulled between the portion pressed against the gasket groove bottom 4 by the pressing rod 83 and the pressing roll 61, and is pressed down by the pressing roll 61. As a result, the gasket 7 is pushed and spread in the outer diameter direction, and is pushed into the gasket groove 3 so as to slide on the inner peripheral surface of the gasket groove 3 (inner side of the lid).
When the turning frame 41 turns 145 degrees, the turning frame 41 turns 145 again in the opposite direction.
Turn once and return to the original position. Turning angle is 145 instead of 180 degrees
The reason is to prevent the pressing roll 61 from hitting the pressing rod 83. The rolling of the pressing roll 61 causes the lower surface of the gasket to adhere to the gasket groove bottom 4.

The inner diameter d of the gasket 7 (see FIG. 4) is made slightly smaller than the diameter d of the peripheral surface 2 of the canopy 1 so that the gasket 7 fits into the gasket groove 3 exactly. Therefore, when the gasket 7 is inserted into the gasket groove 3 with the vacuum suction pad 25, the inner diameter side of the gasket 7 tends to rise. However, since the pressing roll 61 is inclined as described above, a force acts to pull the gasket 3 in the gasket groove 3 toward the outer diameter side. As a result, the gasket 7 is prevented from rising.

When the pressing of the gasket 7 into the gasket groove 3 by the pressing roll 61 is completed, the third air cylinder 73 and the fourth air cylinder 85 are operated, and the pressing roll 61 and the pressing rod 83 are pulled up.

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

The present invention is not limited to the above embodiment. For example, the worker may monitor the movement of the gasket and the operating state of the apparatus, and operate the switch on the operation panel to perform the gasket mounting operation.

[Effects of the Invention] In the method and apparatus for mounting a gasket on a metal can lid according to the present invention, the gasket can be inserted and pushed into the gasket groove mechanically without human power. Therefore, the mounting of the gasket on the lid can be automated, and labor can be saved. Further, the labor of the worker can be reduced, and rust due to sweat can be prevented.

[Brief description of the drawings]

1 to 3 show an embodiment of the present invention.
Fig. 2 is a front view of the gasket mounting device, Fig. 2 is a plan view and Fig. 3 is a side view, Fig. 4 is a longitudinal sectional view showing a state in which the gasket is pressed by a pressing roll in the device, and Figs. FIG. 4 is a plan view showing a state in which a gasket is pressed into a gasket groove by a pressing roll. 1 ... canopy, 3 ... gasket groove, 7 ... gasket,
11 ... stand, 12 ... gasket mounting table, 13 ... lid mounting table, 17 ... guide rail, 21 ... gasket holding device,
23 ... Transfer frame, 25 ... Vacuum suction pad, 31 ... Holder driving device, 33 ... First air cylinder, 35 ... Second
Air cylinder, 41 ... Revolving frame, 47 ... Support shaft, 51
…… Slewing frame drive device, 53 …… Speed control motor, 56 …… Bevel gear transmission mechanism, 61 …… Pressing roll,
67 ... Elevating bracket, 71 ... Pressing roll elevating device, 73
…… Third air cylinder, 81 …… Holding device, 83 …… Holding rod, 85 …… Fourth air cylinder, 91 …… Control device, 93 ……
Photoelectric switch, 95 ... Proximity switch, 97 ... Sequence controller.

Claims (2)

(57) [Claims] In a method of inserting a flexible ring-shaped gasket into a gasket groove provided along an outer peripheral edge of a lid and mounting the gasket on the lid, at least two gaskets are provided.
Inserting a portion of the gasket into the gasket groove, and pressing the gasket into the gasket groove by pressing the pressing roll against the upper surface of the gasket and rolling along the gasket groove with the inserted portion of the gasket pressed against the gasket groove bottom. A method of attaching a gasket to a metal can lid, characterized by: 2. A gantry having a gasket mounting portion and a lid mounting portion, an elevation having at least two gasket holding mechanisms, and being reciprocally movable between the gasket mounting portion and the lid mounting portion. Possible gasket holding device, gasket holding device driving device that reciprocates and moves up and down the gasket holding device, holding device having a holding bar that presses a part inserted into the gasket groove against the bottom of the gasket groove, holding device that moves the holding bar up and down A device driving device, a turning member provided on the lid mounting portion so as to be rotatable about a vertical axis, a turning member driving device for rotating and driving the turning member, a pressing roll attached to the turning member so as to be able to move up and down, and a pressing roll A device for mounting a gasket on a metal can lid comprising a pressing roll elevating device for elevating and lowering.