JPH0678107B2 - Can lid automatic attachment device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic can lid attaching device that automatically attaches a can lid to an opening of a can containing various items and closes the opening.

[Conventional technology]

For example, a can made of a metal plate is used as a packaging form of an article requiring moisture proofness and hermeticity, as shown in FIG.

In the can 1, a circular opening 3 is provided in the upper wall 2, and the opening 3 is closed by a can lid 4 also made of a metal plate. The can lid 4 fits into the opening 3. A peripheral wall 6 is provided around the circular plate 5, and a flange 7 is provided on the outer periphery of the peripheral wall 6 so as to have a sectional shape, and the flange 7 is fitted in the opening 3 and overlaps the upper wall 2.

[Problems to be Solved by the Invention]

Conventionally, the work of fitting the can lid 4 into the opening 3 of the can 1 as described above is performed manually, so that the work is monotonous and heavy labor, and the efficiency is low and the work cost is high. There is.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic can lid attaching device that can automatically attach a can lid to an opening of a can, save labor and improve efficiency.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a holder for accommodating stacked can lids, and a lowermost can lid provided to support the can lids at the bottom of the holder to intermittently eject one by one. A can lid discharging mechanism, a can lid suction pad that is arranged just below the holder so as to move up and down, and sucks the lowest can lid in the holder to take it out to a lowered position; and the suction pad around the suction pad. And a can lid support that horizontally supports the lower surface of the can lid adsorbed by the adsorption pad and separates it from the upper can lid, and is arranged on the lower side of the adsorption pad on the upper surface. A can transfer path that supports and conveys a can having a fitting lid opening for holding the can lid, and a can transfer path configured to stop and position the can at the can lid attachment position, and a can lid that has been taken out to the lower position of the suction pad. Then remove the can lid from the can transfer path A can lid feed mechanism that transports the can lid immediately above the can stop position, and a can lid adsorber that moves up and down directly above the can that stops at the can lid attachment position in the can transfer path. The can lid fitting mechanism that holds the can lid taken out immediately above the can by suction and fits the can lid into the opening of the can that stops immediately below is constructed.

[Action]

When the can lids are stacked in the holder and the cans stop at the can lid mounting position on the can transfer path, the suction pad and the can lid support stand rise to adsorb the lowest can lid in the holder. At the same time, the lower surface is horizontally supported and separated from the upper can lid.When the can lid discharging mechanism releases the support of the can lid and the suction pad descends, the can lid discharging mechanism supports the can lid again, so that the suction pad One can lid is taken out to the lowered position.

Next, the can lid feeding mechanism holds the can lid taken out by the suction pad and faces the can directly above the stopped can on the can transfer path.The can lid is sucked by the suction tool of the can lid fitting mechanism and held. On the contrary, when the sucked can lid is lowered, it is fitted into the opening of the can that stands by immediately below.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The automatic can lid attachment device is one that automatically fits and attaches the can lid 4 to the opening 3 of the can 1 shown in FIG.
Broadly speaking, a holder 11 for storing the stacked can lids 4,
A can lid discharging mechanism 12 provided at the lower part of the holder 11, a can lid removing mechanism 13 arranged immediately below the holder 11, a can transfer path 14 for supporting and sending the can 1 upright, and a can lid removing mechanism.
A can lid feeding mechanism 15 for transporting the can lid 4 taken out at 13 to the can lid attaching position of the can transfer path 14 just above the can 1, and a can lid 4 just above the can 1 for adsorbing the can lid 4 by suction. 1 and the can lid fitting mechanism 16 fitted into the opening 3 of the first.

As shown in FIGS. 1 and 7, the holder 11 has a plurality of guide shafts 22 standing on a cylindrical body 21 having an inner diameter into which the can lid 4 is loosely fitted, and the can lids 4 stacked up and down. It is structured so as to be movably held, and is mounted on the support frame 23 so as to stand upright.

The can lid discharging mechanism 12 has a plurality of cylinders 25 arranged so as to surround the cylindrical body 21 on a flange 24 provided on the outer periphery of the lower portion of the cylindrical body 21, and a can lid supporting rod connected to a piston rod of each cylinder 25.
26 is supported by a window hole 27 provided in the cylindrical body 21, and the tip receiving claw 26a of the supporting rod 26 is configured to move in and out with respect to the inner circumference of the cylindrical body 21, and as shown in FIG. Claws on the inner circumference of body 21
The lowermost can lid 4 in the holder 11 is supported by the brim 7 in the state where 26a projects.

Further, when the can lid 4 is discharged, the cylinder 25 operates to receive the catch 26a.
Escapes from the inner circumference of the cylindrical body 21 to release the support of the can lid 4 and discharges it, and the receiving claw 26a immediately returns to the projecting position after passing through the lowest can lid and supports the collar 7 of the upper can lid. To do.

Therefore, the can lid discharging mechanism 12 intermittently discharges the lowest can lid 4 one by one.

As shown in FIGS. 4 and 7, the can lid take-out mechanism 13 includes a cylinder 30 fixed to a mounting plate 29 of a support frame 23 with a piston rod 28 facing upward so as to be located immediately below the holder 11. A can lid support base 31 fixed to the piston rod 28 of the cylinder 30, a suction pad 32 fixed in the can lid support base 31, and a ring shape arranged so as to be positioned outside the upper part of the support base 31 waiting in the lowered position. The can lid supporting plate 33 is connected to the suction device via the hose 34, and the can lid supporting plate 33 is a mounting plate.
It is supported by the upper end of a shaft 35 that is held by 29 so as to be movable up and down, and is urged by a spring 36 to be elastically moved upward toward a raised position.

The can lid support plate 33 is positioned below the holder 11 at an appropriate interval, and the can lid support base 31 and the suction pad 32 are moved by the cylinder 30 from the upper surface of the can lid support plate 33 when in the lowered position. Is also located at the bottom of the
A vertical movement of a stroke for abutting and adsorbing to the lowest can lid 4 in 11 is given, and the can lid 4 is taken out to the lowered position and placed on the can lid supporting plate 33.

By the way, since the can lid 4 is formed in a cross-sectional shape in which the peripheral wall 6 is provided around the circular plate 5 as shown in FIG.
When stored in the holder 11 in a stacked state, a part of the upper can lid may be fitted into the lower can lid to be in an inclined state.

However, the upper end surface of the can lid support base 31 is formed in a horizontal annular shape, and the lower end periphery of the can lid 4 sucked by the suction pad 32 is supported by the upper end surface to force the sucked can lid 4 to be horizontal. Since the can lid 4 retains its shape and retains its shape, when the upper can lid is partially fitted, the upper can lid is pushed out upward, so that the stacked can lids are reliably separated from each other. You can take out the can lid one by one without any problems.

The can transfer path 14 is formed by arranging a conveyor 37 horizontally supported by a support frame 23 at a lateral position below the can lid take-out mechanism 13 to support the can 1 supported in an upright state. It is designed to transfer in the direction perpendicular to the vertical direction.

The portion located in the support frame 23 of the conveyor 37,
It is set to the mounting position of the can lid 4 with respect to the can 1, and the can 1 can be positioned and stopped at this mounting position.

The positioning means for the can 1 is, as shown in FIGS. 2 to 6, a can support plate 38 extending along the conveying direction on one side of the conveyor 37 and a can retainer which is moved forward and backward by a cylinder 39 on the other side.
40 is disposed opposite to each other, and is further formed directly above the can receiving plate 38 and is attached to the support frame 23. And a can positioning member 43 fixed to the support frame 23 so as to move back and forth by the cylinder 42.
When the top is sent to the position within the support frame 23, this is detected by an appropriate switch or the like to extend the cylinders 39 and 42, and the can presser 40 and the can positioning member 43 move the can 1 to the can receiving plate 38 and the upper part. It is pressed against the canister 41 and held in place.

The can lid feeding mechanism 15 is arranged on the support frame 23,
The can lid 4 is clamped from both sides onto the can lid support plate 33 of the can lid take-out mechanism groove 13, and is positioned and stopped at the can lid mounting position on the conveyor 37. It is transferred so as to be arranged in a heart shape.

The can lid feeding mechanism 15 supports both ends of the movable plate 45 by guide shafts 44, 44 provided on both sides of the support frame 23, and the movable plate 45 is moved forward and backward along the guide shafts 44, 44 by a cylinder 46. A pair of holding arms 47, 47 for holding the peripheral wall 6 of the can lid 4 from both sides and a pair of cylinders 48, 48 for opening and closing the holding arms 47, 47 are attached to the movable plate 45. .

In the can lid feeding mechanism 15, the expanded both holding arms 47, 47 face both sides of the can lid 4 on the can lid supporting plate 33 in the forward position, and in this state, the both holding arms 47, 47 are closed to close the can lid 4. Then, with the can lid 4 being held, the can lid 4 returns to the retracted position facing directly above the can 1 as shown in FIG.

The can lid fitting mechanism 16 is arranged on the upper portion of the support frame 23 so as to be positioned immediately above the can 1 which is positioned and stopped at the can lid mounting position of the conveyor 37, and the cylinder 50 with the piston rod 49 facing downward, and the piston It is composed of a disk-shaped magnet 51 attached to the lower end of the rod 49.

In the can lid fitting mechanism 16, the magnet 51 holds the arm as shown in FIG.
When the holding arms 47, 47 holding the can lid 4 return to the retracted position, the magnet 51 moves downward and overlaps the upper surface of the can lid 4 to attract it. And holding arms 4
When 7 and 47 are opened and the holding of the can lid 4 is released, the can lid 4 is further sucked and held down, and the can lid 4 is press-fitted into the opening 3 of the can 1 which stands by immediately below. The operation of returning to the raised position with the can lid 4 left in 1 is performed.

The automatic can lid attaching device of the present invention has the above-mentioned structure, and its operation will be described below.

A large number of can lids 4 are vertically stacked and housed in a holder 11, and the cans 1 are supplied onto a conveyor 37.
Is stopped by the positioning means at the can lid mounting position on the conveyor 37.

In this state, the cylinder 30 of the can lid take-out mechanism 13 is extended, the suction pad 32 and the support base 31 are raised, and the suction pad 32 overlaps the lower surface of the lowermost can lid 4 in the holder 11. It is attracted by a suction force and horizontally held by the support base 31.

When the suction pad 32 and the support base 31 move downward due to the contraction of the cylinder 30, the respective receiving claws 26a of the can lid discharging mechanism 12 move to the cylinder 25.
The operation of immersing and projecting into the inner circumference of the cylindrical body 21 is performed by the operation of, and only one lowermost can lid 4 is discharged.

Therefore, the adsorption pad 32 adsorbs only one can lid 4 and takes it out to the lowered position, and when the can lid 4 is placed on the can lid support plate 33, the adsorption is released.

When the suction pad 32 of the can lid take-out mechanism 13 returns to the lowered position, the holding arms 47, 47 of the can lid feed mechanism 15 move forward in an expanded state and are fitted onto both sides of the can lid 4 placed on the support plate 33. In this forward movement position, the two holding arms 47, 47 close and hold the can lid 4, and when the can lid 4 is returned to the retracted position while being held, the can lid 4 is held right above the can 1 waiting on the conveyor 37. .

In this state, the cylinder 50 of the can lid fitting mechanism 16 expands,
The magnet 51 moves downward to attract the can lid 4, and the holding arm 4
7 and 47 are opened to release the holding of the can lid 4, and the can lid 4 attracted and held by the magnet 51 is further moved downward and press fit into the opening 3 of the can 1.

Due to the contraction of the cylinder 50, the magnet 51 returns to the raised position leaving the can lid 4, and the can 1 whose opening 3 is closed by the can lid 4 is released from the positioning means and then sent to the takeout side of the conveyor 37. It will be.

[Effects] As described above, according to the present invention, the can lids that are stacked and stored in the holder are taken out one by one and positioned directly above the cans, and the can lids are press-fitted into the opening of the can. Therefore, the can lid can be automatically attached to the opening portion of the can, and labor saving and efficiency improvement of the can lid attaching work can be achieved.

[Brief description of drawings]

FIG. 1 is a plan view of an automatic mounting device according to the present invention, FIG. 2 is a front view of the same, FIG. 3 is a side view of the same, and FIG. 4 is a longitudinal sectional front view of an enlarged main part of the same. Is a cross-sectional plan view of the same as above, FIG. 6 is a vertical sectional side view of the same, FIG. 7 is a further enlarged vertical front view of the can lid holder portion, and FIG. 8 is a sectional view showing the relationship between the can and the can lid. . 1 ... can, 3 ... opening, 4 ... can lid, 11 ... holder, 12 ... can lid ejection mechanism, 13 ... can lid ejecting mechanism, 14 ... can transfer path, 15 ... can lid Feed mechanism, 16 …… can lid fitting mechanism, 31 …… can lid support, 32 …… suction pad.

Claims (1)

[Claims] 1. A holder for accommodating stacked can lids, a can lid ejecting mechanism provided below the holder to support the can lids and intermittently ejecting the lowest can lid one by one, said holder A can lid suction pad that is arranged so as to move up and down immediately below the holder and sucks the lowest can lid in the holder and takes it out to a lowered position, and is arranged around the suction pad so as to move up and down integrally with the suction pad. A can lid support that horizontally supports the lower surface of the can lid adsorbed by the pad and separates it from the upper can lid, and a can lid mounting opening that is arranged on the lower side of the adsorption pad and on the upper surface of which is fitted with a can lid. A can transfer path that supports and conveys a can and positions and stops this can at the can lid mounting position, and a can lid that is taken out at the lower position of the suction pad and holds the can lid attached to the can transfer path. Transfers just above the can to stop in position A can lid feeding mechanism, and a can lid suction device is arranged so as to move up and down directly above the can that stops at the can lid mounting position on the can transfer path.The can lid feeding mechanism removes the can lid just above the can. An automatic can lid attaching device configured by a can lid fitting mechanism that is suction-held and fits into an opening of a can that stops the can lid immediately below.