JP4073292B2 - Capping head - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
More particularly, the present invention relates to a holding mechanism for holding the crowns one by one from a crown transfer means such as a picker or a cap disk.
[0002]
[Prior art]
Conventionally, as a technique for supplying one crown at a time to a capping head for capping a crown into a container, a structure for directly supplying a crown carrying a chute to a capping head (see, for example, Patent Document 1), or a chute A configuration is known in which a crown to be conveyed is received by a star wheel and then rotated in synchronization with a capping head to deliver the crown (for example, see Patent Document 2).
[0003]
[Patent Document 1]
Japanese Examined Patent Publication No. 53-10512 (first page to second page, FIG. 2)
[Patent Document 2]
Japanese Utility Model Publication No. 61-31995 (pages 1 to 2, FIGS. 1 and 2)
[0004]
[Problems to be solved by the invention]
In the configuration described in Patent Document 1, since the crown is directly supplied to the capping head moving from the fixed chute, a certain amount of time is required for stable delivery, and there is a limit to speeding up. There was a problem.
[0005]
Further, in the case of one head capper that lifts and lowers the capping head by a rotating cam, when the screw capper is also used, the capping head for the screw cap and the crown must be lifted and lowered by the same cam. It is impossible to supply the screw cap directly to the capping head with the capping head for the screw cap. After the screw cap is transferred below the capping head, the capping head is lowered to hold the screw cap, and then the container It is further lowered for capping.
In order to hold the cap in this way, even if it is going to supply the crown directly to the capping head that has the action of lowering the capping head, it can not take time to supply the crown stably, for screw caps and for crowns When the capping head is also used, there is a problem that one of the caps must be manually supplied.
[0006]
Further, in the configuration described in Patent Document 2, since the crown is delivered by the star wheel that moves in synchronization with the capping head, the speed can be increased, but the head pin holding the crown is lowered below the lower end of the capping head body to lower the crown. However, in Patent Document 2, there is no detailed description.
[0007]
The present invention has been made to eliminate the above-described problems, and has an object to provide a capping head that is excellent in speeding up and that can lower a head pin below a lower end of a capping head body with a simple configuration. Is.
[0008]
[Means for Solving the Problems]
The capping head according to the first aspect of the present invention includes a first housing provided with a throat, a head pin provided with a magnet for holding a crown below and a piston portion, and a cylinder chamber for moving the head pin up and down. A second housing formed so as to be movable up and down with respect to the first housing, a supply means for supplying air to the cylinder chamber, and a spring for biasing the second housing downward, in particular a cylinder chamber The head pin can be raised and lowered with respect to the throat by supplying air to the head.
[0009]
In the capping head according to the present invention, the head pin for holding the crown can be lowered from the lower end of the throat by the air cylinder, and the crown can be stably held with a simple configuration. Further, even when a cap cap for a crown and a capping head for another cap such as a screw cap are combined in one head capper, the cap can be supplied automatically.
[0010]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an overall view showing a rotary filling capper, and is a diagram showing the overall configuration of an intermittent rotary filling capper 1 having a filling mechanism (not shown) and a capper having the capping head of the present invention. The containers 36 supplied by the supply conveyor 2 {see (E) and (F) of FIG. 4) are held in the respective pockets 4 of the rotary wheel 3 one by one and are intermittently rotated and conveyed. 5, filling is performed by a filling mechanism (not shown), and then capping is performed at a capping position 6 where a capping head is provided, and then the paper is conveyed by a discharge conveyor 7 and sent to the next process.
[0011]
Next, the capping device 8 will be described with reference to FIG. A rotary shaft 10 is provided from a box 9 in which a drive source (not shown) is accommodated, and a lift cam 12 having a cam groove 11 formed on the outer periphery is provided on the rotary shaft 10. A roller 14 for raising and lowering the capping head 13 is engaged with the cam groove 11 of the raising and lowering cam 12, and the capping head 13 is raised and lowered along the curve shown in FIG. ing. Below the capping head 13, a picker 37 provided so as to be swingable by a driving means (not shown) is arranged. The crowns 15 supplied from a chute (not shown) are taken out one by one and transferred to the lower side of the capping head 13. It is like that.
[0012]
Next, the configuration of the capping head 13 will be described with reference to FIG.
The capping head 13 has a throat 17 attached to the lower portion of the first housing 16, and a head pin 19 in which a magnet 18 for holding the crown 15 is embedded in the throat 17 is disposed so as to be able to move up and down. A second housing 20 is mounted in the first housing 16 via a first spring 21 so as to be movable up and down.
[0013]
A positioning step 22 is formed in the first housing 16 to position the lower end of the second housing 20 that is constantly urged downward by the first spring 21. The head pin 19 is provided with a piston portion 23, and the piston portion 23 is attached to a cylinder chamber 24 formed in the second housing 20 so as to be movable up and down.
[0014]
In the cylinder chamber 24, a second spring 25 is disposed below the piston portion 23, and an air supply path 26 is formed above the piston portion 23. When air is not supplied into the cylinder chamber 24, FIG. 4 (D), (E), and (F), the head pin 19 is brought into contact with the top surface 28 of the cylinder chamber 24 by the urging force of the second housing 25. Further, when air is supplied into the cylinder chamber 24 by an air supply means (not shown), the piston portion 23 is pushed down against the urging force of the second housing 25, and (A), (B), (C) of FIG. ), The lower end of the head pin 19 is positioned below the lower end of the throat 17.
[0015]
An upper portion of the first housing 16 is disposed in a third housing 30 attached to the base 29 so as to be movable up and down via a third spring 31. A positioning member 32 is screwed to the lower end of the third housing 30 so that the first housing 16 is positioned by abutting against the step portion 33 of the first housing 16 that is constantly biased downward by the third spring 31. It has become.
[0016]
Further, a stopper member 35 is disposed at the top of the first housing 16 so as to come into contact with the top surface 34 of the second housing 20 to determine the rising height of the head pin 19 when plugged.
[0017]
The operation of the capping head 13 according to the above configuration will be described.
In the standby state before the operation is started, the roller 14 is in the position a of the cam groove 11 shown in FIG. 3, and the capping head 13 is in the highest position.
Air is not supplied to the cylinder chamber 24, and the head pin 19 is biased upward by the second spring 25, and the top surface 27 is in contact with the top surface 28 of the cylinder chamber 24.
[0018]
When the operation is started, the container 36 is held in the pocket 4 of the rotary wheel 3 and is intermittently conveyed by one pitch while being filled at the filling position 5. Then, the container 36 is intermittently conveyed by one pitch to the capping position 6. Is done. When the detection means (not shown) detects that the container 36 has reached a position slightly before the capping position 6, for example, two pitches, the lift cam 12 is rotated and the picker 37 is swung to remove the crown 15. Start work.
[0019]
And the position of the cam groove 11 which the roller 14 engages with a rotation of the raising / lowering cam 12 moves to the b position from the position a shown in FIG. The elevator cam 12 is provided with an encoder (not shown) for detecting the rotation angle so that the position of the roller 14 in the cam groove 11 can be recognized.
[0020]
When the cam groove 11 reaches the position b, air is supplied into the cylinder chamber 24 of the second housing 20 via the air supply path 26 and the head pin 19 is lowered. At this time, the picker 37 takes out one crown 15 from a chute (not shown) and transfers the crown 15 below the capping head 13 (see FIG. 4A).
[0021]
When the cam groove 11 reaches the c position, the capping head 13 starts to descend to the d position and maintains its height to the e position. The crown 15 held by the picker 37 is transferred to the head pin 19 of the capping head 13 between the position d and the position e (see FIG. 4B).
[0022]
When the cam groove 11 exceeds the position e, the capping head 13 moves up to the position f (see FIG. 4C). The picker 37 is retracted from a position below the capping head 13 after the capping head 13 is lifted.
[0023]
When the cam groove 11 reaches the position g, the air supply to the cylinder chamber 24 is stopped, and the capping head 13 maintains the raised position up to the position h. When the air supply is stopped, the head pin 19 is raised until the top surface 27 comes into contact with the top surface 28 of the cylinder chamber by the urging of the second spring 25, so that the crown 15 held by the head pin 19 is throated. Centering is performed in contact with the inner surface of 17. When the cam groove 11 exceeds the h position, the capping head 13 starts to descend due to stoppering (see FIG. 4D).
[0024]
While the capping head 13 is descending, the container 36 is conveyed to the capping position 6 and when the cam groove 11 reaches the i position, the capping head 13 descends to the stoppering height and plugs the crown 15 into the container 36. . At this time, the crown 15 held by the head pin 19 is restricted from descending by the container 36, but the first housing 16 and the throat 17 continue to descend until the stopper member 35 contacts the top surface 34 of the second housing 20. Then, the top surface of the crown 15 is pressed by the head pin 19 and the side surface is crimped by the throat 17 to complete the capping {see (E) of FIG. 4}.
[0025]
The capping head 13 maintains the descending end until the cam groove 11 reaches the j position, and when the j position is exceeded, the capping head 13 starts to rise and the container 36 is discharged {see (F) in FIG. 4}.
[0026]
In this embodiment, an example is described in which the capping head is moved up and down by rotating the lifting cam. However, the present invention is not limited to this, and a rotary disk is provided as in Patent Document 2. It can also be used for rotary cappers.
[0027]
【The invention's effect】
As a result of employing the above configuration, the present invention can obtain the following effects.
(1) The head pin for holding the crown can be lowered from the lower end of the throat by the air cylinder, and a stable crown can be held with a simple configuration.
(2) Even when a capping head for a crown and a capping head for another cap such as a screw cap are combined in one head capper, the supply of the crown and other caps can be performed automatically.
[Brief description of the drawings]
FIG. 1 is an overall view showing a rotary filling capper according to the present invention.
FIG. 2 is a front view showing an embodiment of the capper of the present invention.
FIG. 3 is an explanatory diagram showing a cam curve in the capper of the present invention.
FIG. 4 is a flowchart of a stoppering operation in the capper of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Rotary filling capper 2 ... Supply conveyor 3 ... Rotary wheel 4 ... Pocket 5 ... Filling position 6 ... Capping position 7 ... Discharge conveyor 8 ... · Capping device 9 ··· Box 10 ··· Rotary shaft 11 ··· Cam groove 12 · · · Elevating cam 13 · · · Capping head 14 · · · Roller 15 · · · Crown 16 ..... First housing 17 ... Throat 18 ... Magnet 19 ... Head pin 20 ... Second housing 21 ... First spring 22 ... Positioning step 23... Piston section 24... Cylinder chamber 25... Second spring 26... Air supply path 27 ... Top surface of head pin 19 28. Surface 29 ... Ba 30 ··· Third housing 31 ··· Third spring 32 ··· Positioning member 33 ··· Step 34 · · · Top surface 35 · · · Stopper member 36 · · · Container 37 ... Picker

Claims (1)

In a capping head that holds crowns one by one from the crown transfer means and plugs them into the mouth of the container, a first housing provided with a throat, a magnet holding the crown below and a piston portion are formed. The head pin, the cylinder chamber for raising and lowering the head pin are formed, the second housing provided so as to be movable up and down with respect to the first housing, the supply means for supplying air to the cylinder chamber, and the second housing downward A capping head comprising an urging spring and capable of raising and lowering the head pin with respect to the throat by supplying air to the cylinder chamber.

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