JP7400390B2 - Tabletop capping device - Google Patents

Description

The present invention relates to a tabletop capping device that can be installed on a tabletop and seals a bottle by attaching a cap to the mouth of a bottle filled with contents such as a beverage.

BACKGROUND ART As a container filled with contents such as a beverage, there is known a container in which a metal cap is attached to the opening of a bottle-shaped can (bottle can) to seal the opening. This bottle can generally has a cylindrical body having a bottom, a shoulder that gradually reduces in diameter as it goes upward, on the opening side, and a mouth provided above the shoulder through the neck. It is said that Such bottle cans are formed into a cylindrical body with a bottom by subjecting a metal plate material (aluminum alloy material plate material) to a cupping process (drawing process) and a DI process (drawing & ironing process). A shoulder portion is formed by reducing the diameter of the body of the bottomed cylindrical body on the opening side, and then a mouth portion having a bulging portion, a threaded portion, a curled portion, etc. is formed. .

A metal cap is attached to the mouth of this bottle can. Before this cap is attached to a bottle can, it has a disc-shaped top plate part and a cylindrical part extending perpendicularly from its outer periphery. A cylindrical portion is machined along the threaded portion, and the lower end of the cylindrical portion is locked to the bulge. When opening the cap, when the cap is rotated, the bridge portion formed in the cylindrical portion is cut, thereby separating the cylindrical portion into upper and lower parts, which can be removed from the mouth.

As a prior art related to such a capping device, for example, the one described in Patent Document 1 is known.
The capping device is configured to include, for example, a pressure block and a capping roller, and the capping roller includes a first roll (thread roller) that forms a threaded portion on the side surface of the cap material, and a second roll (lock roll) that tightens the flare. roller).

In this capping device, first, a cap material is placed over the mouth of a bottle can, the outer periphery of the top plate of the cap material is pressed toward the bottom of the can by a pressure block, and drawing processing is performed. By rotating the first roller along the threaded part of the bottle can, a threaded part is formed around the cap material, and by rotating the second roller along the bulge of the mouth part, the threaded part is formed around the cap material. Tighten the flare. Thereby, the cap is attached to the mouth of the bottle can.
This capping device can cap bottles and cans that are continuously transported in a large-scale filling factory at high speed.

Japanese Patent Application Publication No. 2002-347890

Incidentally, there are cases in which it is desired to produce a small number of bottle cans filled with beverages so that beverages such as craft beer can be taken home at restaurants, small-scale breweries, etc., and a device that can cap bottle cans on a tabletop is desired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a capping device that can cap bottles and cans on a tabletop.

In the tabletop capping device of the present invention, the outer circumferential surface of a cap material placed over the mouth of a bottle can is pressed against the threaded part of the mouth, and a threaded part corresponding to the threaded part is formed in the cap material. A capping device for attaching a cap to a portion,
A can support part for supporting the bottle can, and a capping head for attaching the cap by forming the thread part on the cap material placed over the mouth part of the bottle can, on a stand that can be installed on a tabletop. , a head rotation mechanism for rotating the capping head, and a head elevating mechanism for elevating the capping head,
The head rotation mechanism includes a drive unit in which an output shaft is arranged horizontally, and a rotation transmission mechanism that changes the rotation direction of the output shaft at right angles and transmits the rotation direction to the spindle shaft of the capping head,
The spindle shaft is provided at a position horizontally shifted from the direction in which the output shaft extends.

In this tabletop capping device, the spindle shaft is installed at a position horizontally offset from the extension direction of the output shaft, so the length dimension (depth dimension) of the output shaft is reduced, making the entire device smaller. be able to. Therefore, a compact tabletop capping device can be provided.

In this tabletop capping device, the pedestal is provided with at least a pair of guide posts that guide the lifting and lowering of the capping head, and one of the pair of guide posts is arranged behind the spindle shaft. The other guide post may be disposed on the opposite side of the output shaft and shifted from the one guide post in the length direction of the output shaft.

The guide post can smoothly guide the vertical movement of the housing to suppress vibrations, etc., and the guide post is offset in the length direction of the output shaft to match the arrangement of the spindle shaft. The dimension in the horizontal direction (width direction) perpendicular to the length direction can also be reduced, allowing for further miniaturization.

In this tabletop capping device, the output shaft is arranged offset from a center line in the left-right direction of the pedestal, and the spindle shaft is arranged offset from the center line on a side opposite to the output shaft. Good. Further miniaturization can be achieved.

In this tabletop capping device, the rotation transmission mechanism includes a bevel gear mechanism that connects the output shaft and a rotation shaft arranged vertically, a spur gear fixed to the rotation shaft, and an outer peripheral portion of the spindle shaft. and a gear that is formed to mesh with the spur gear.

Rotation is transmitted by a simple gear train consisting of a bevel gear mechanism, spur gears, and gears, and the transmission path is shorter than when transmitting rotation between the output shaft and the spindle shaft via a horizontal transmission shaft. This is advantageous for compactness.

In this tabletop capping device, the can support section is removably installed on the pedestal, and has a support recess that supports the bottom of the bottle can, and the opening of the support recess gradually increases as it moves toward the open end. It is better if the diameter is expanded.

Even if some of the beverage spills from the opening when a bottle can filled with beverage is installed on the can support part, it can be collected in the liquid reservoir recess of the can support part. Furthermore, the can support can be removed from the pedestal and cleaned. At restaurants and the like, bottles filled with beverages are handled by hand, so there is a risk of spilling the beverage, which reduces the chance of staining the area around the device.

According to the present invention, bottle cans can be capped on a tabletop, and it is compact and can be installed even in a narrow space.

FIG. 1 is a front view of a half-section of a bottle can and a cap material to which a table capping device according to an embodiment of the present invention is applied. FIG. 2 is a front view of the tabletop capping device of the embodiment. FIG. 3 is a side view of the tabletop capping device of FIG. 2; 3 is a top view of the tabletop capping device of FIG. 2. FIG. FIG. 3 is an enlarged sectional view of the head support shaft of the tabletop capping device of FIG. 2; FIG. 3 is a front view showing the main parts of the capping head. FIG. 7 is a bottom view of the capping head of FIG. 6; FIG. 3 is an enlarged sectional view of a can support provided in the tabletop capping device of FIG. 2; FIG. 3 is a front view of a rotating disk provided on the output shaft. FIG. 3 is a front view of the control panel.

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

[Bottle can]
The bottle can 1 is made of aluminum alloy, and as shown in FIG. 1, it has a bottomed cylindrical can body 2, a tapered shoulder 3 whose diameter gradually decreases upward from the upper end of the can body 2, and It is formed into a bottle shape having a cylindrical small-diameter neck portion 4 extending upward from the upper end of the shoulder portion 3, and a mouth portion 5 formed above the neck portion 4. The mouth portion 5 includes a curled portion 6 formed at the open end thereof, a male threaded portion 7 formed below the curled portion 6, and an annular bulged portion bulged below the male threaded portion 7. 8 is formed. This bottle can has a diameter of, for example, 38 mm (nominal diameter; specifically, the outer diameter of the bulging portion 8 is 36.0 mm or more and 40.0 mm or less), and the can body 2 has a diameter of 211 mm (nominal diameter). 64.24 mm or more and 68.24 mm or less), and the overall height is 128 mm or more and 233 mm or less.

[cap]
A cap material 11 that is attached to the mouth portion 5 of the bottle can 1 and becomes the cap 10 is made of an aluminum alloy, and is formed into a bottomed cylindrical shape having a top plate portion 12 and a cylindrical portion 13. The cylindrical portion 13 is formed with knurls 14, grooves 15, bridge portions 16, flares 17, and the like. Further, a liner 18 which is a sealing material is provided inside the top plate part 12, and after filling the bottle can 1 with contents, it is placed over the mouth part 5 and thread-formed along the male thread part 7. At the same time, the flare 17 is wrapped around the bulge 8 to seal the mouth 5. Hereinafter, the material before being attached to the bottle can 1 will be referred to as the cap material 11, and the material with a threaded portion formed thereon after being attached will be referred to as the cap 10.

[Capping device]
2 to 4 show the overall structure of a capping device 20 for attaching the cap material 11 to the mouth 5 of the bottle can 1. As shown in FIG.
This capping device 20 caps a bottle can 1 held in a fixed state by raising and lowering and rotating a capping head 30, and includes a pedestal 50 that can be installed on a table top such as a counter or a table in a restaurant. The capping head 30, a head rotation mechanism 60 for rotating the capping head 30, and a head elevating mechanism 70 for elevating the capping head 30 are provided. In this embodiment, the head rotating mechanism 60 and the head elevating mechanism 70 have the same drive unit 75. Note that FIGS. 2 and 3 show half of the bottle can 1 and the cap material 11 in cross section, and the capping head 30 is omitted in FIG.

(Detailed configuration of capping head 30)
The capping head 30 is provided with a pressure block 31, a first roll 34, and a second roll 35 at the lower end of a vertically held head support shaft unit 80.

As shown in FIG. 5, the head support shaft unit 80 has a plurality of vertical shafts arranged coaxially, with a pressure shaft 81 extending from the center, a cylindrical spindle shaft 82 outside the pressure shaft 81, and a cylindrical spindle shaft 82 outside the pressure shaft 81. A cylindrical sleeve shaft 83 is provided. The relative positions of the pressure shaft 81 and the spindle shaft 82 in the vertical direction are fixed, and the sleeve shaft 83 is supported to be movable relative to the pressure shaft 81 and the spindle shaft 82 in the vertical direction. Further, a spindle shaft 82 between the pressure shaft 81 and the sleeve shaft 83 is supported so as to be relatively rotatable. A coil spring 84 is provided between the pressure shaft 81 and the sleeve shaft 83, and the coil spring 84 is compressed when the sleeve shaft 83 descends relative to the pressure shaft 81 (and spindle shaft 82). As a result, an urging force is generated that restores the relative positional relationship in the vertical direction to its original state.

Further, a cylindrical cone cam 85 is fixed to the lower end of the sleeve shaft 83. In this head support shaft unit 80, the cone cam 85 of the sleeve shaft 83 is provided at the uppermost position at the lower end, and then the lower end of the spindle shaft 82 protrudes downward from the lower end of the cone cam 85. A lower end protrudes downward from the lower end of the spindle shaft 82, and the lower end of this pressure shaft 81 is disposed at the lowest position.

A pressure block 31 is provided at the lower end of the pressure shaft 81. As shown in FIG. 6, this pressure block 31 is formed into a cylindrical shape with a closed upper end, and a pressure block insert 36 is attached to the inside of this pressure block 31 via a spring 37. is provided to be movable relative to the pressure block 31 in the vertical direction. By placing this pressure block 31 on the cap material 11, the top plate portion 12 of the cap material 11 is applied to the bottom of the bottle can 1 via the pressure block insert 36 due to the biasing force of the spring 37 due to the vertical load applied to the pressure shaft 81. The cap member 11 is held in a state where it is placed over the mouth portion 5 of the bottle can 1. A stepped portion 12a is formed on the outer peripheral side of the top plate portion 12 pressed by the pressure block 31, and the liner 18 can be brought into close contact with the curled portion 6 of the mouth portion 5.

The first roll 34 and the second roll 35 are provided at the tip (lower end) of the spindle shaft 82 of the head support shaft unit 80, and the first roll 34 forms a threaded part in the cap material 11, and the second roll 35, the flare 17 is wrapped around the bulge 8 of the bottle can 1. At least one each of the first roll 34 and the second roll 35 is required, and in the capping head 30 of the capping device 20 of this embodiment, as shown in FIG. Two rolls 35 are provided alternately in the circumferential direction.

The first roll 34 and the second roll 35 are provided at the tip of a bracket arm 38 fixed to a spindle shaft 82 of a head support shaft unit 80. This bracket arm 38 is provided for each roll 34, 35, projects radially outward from the spindle shaft 82, and has a vertical arm shaft 39 rotatably supported at its tip. The base end of a horizontal roll support arm 40 is fixed to the lower end of the roll support arm 40, and each roll 34, 35 is rotatably supported at the tip of the roll support arm 40. Therefore, each of the rolls 34 and 35 is horizontally pivotable about the arm shaft 39 by the roll support arm 40.

A torsion spring 41 is attached to each arm shaft 39 , and both ends of this torsion spring 41 are fixed to the bracket arm 38 . The first roll 34 and the second roll 35 are always urged toward the center of the capping head 30 (clockwise direction about the arm shaft 39 in FIG. 7).

Furthermore, the base end of a horizontal cam follower support arm 42 is fixed to the upper end of each arm shaft 39, and a cam follower 43 is rotatably attached to the tip of this cam follower support arm 42.
The cam follower 43 is in contact with the outer peripheral surface of the cone cam 85 at the lower end of the sleeve shaft 83 of the head support shaft unit 80, and when it is in contact with the enlarged diameter portion 85a at the lower end of the cone cam 85, the roll support arm 40 is The cone cam 85 was held at the outer position (the position shown in FIG. 7) against the biasing force, and the cone cam 85 descended relative to the pressure shaft 81 (and spindle shaft 82), and the cam follower 43 moved to the reduced diameter portion 85b of the cone cam 85. At times, the roll support arm 40 is rotated toward the center of the capping head 30 by the biasing force of the torsion spring 41.

The first roll 34 and the second roll 35 are formed in a disk shape, and by horizontally turning via the roll support arm 40, the outer circumferential surface of the cylindrical portion 13 of the cap material 11 is exposed to the bottle can 1 from the side with its outer edge portion. Press it against the mouth part 5 of.
Further, as shown in FIG. 6, both rolls 34 and 35 are respectively attached to the lower ends of a support shaft 45 supported by a roll support arm 40, and are attached to the upper and lower ends of the roll support arm 40 via the support shaft 45. It is supported so that it can move in the direction. Further, a coil spring 46 is attached to the support shaft 45, and the coil spring 46 urges both the rolls 34, 35 to be pulled upward.

Then, as the roll support arm 40 rotates, it comes into contact with the surface of the cylindrical part 13 of the cap material 11, and the first roll 34 rolls on the surface of the cylindrical part 13 centering on the mouth part 5 of the bottle can 1, thereby screwing By moving from the upper side (opening side) to the lower side along the threaded valley of the part 7, the shape of the threaded part 7 is transferred and the threaded part is processed into the cylindrical part 13, and the second roll 35 By rolling the outer peripheral surface of the mouth portion 5 while pressing the flares 17 of No. 11 against the bulging portion 8 and deforming them, the flares 17 are rolled up into the bulging portion 8.

(mount)
As shown in FIGS. 2 to 4, the pedestal 50 is vertically movably supported by a base plate 51, a pair of guide posts 52A, 52B vertically erected on the base plate 51, and guide posts 52A, 52B. The housing 53 includes a housing 53 and a cover 54 that surrounds a lower portion of the housing 53 on the base plate 51. A can support stand (can support part) 55 that holds the bottom of the bottle can 1 is fixed to the base plate 51.
The housing 53 is formed in the shape of a rectangular parallelepiped box having a front wall 53a, a rear wall 53b, an upper wall 53c, a lower wall 53d, and a side wall 53e. Guide posts 52A and 52B pass through the lower wall 53d. The tips (upper ends) of the guide posts 52A, 52B are inserted into a guide sleeve 56 fixed to the wall 53d.

Further, a drive section 75 is fixed to the outer surface of the rear wall 53b of the housing 53, and a head rotation mechanism 60 connected to the drive section 75 is accommodated within the housing 53. Further, a sleeve shaft 83 held by the upper wall 53c and lower wall 53d of the housing 53 is fixed vertically. This sleeve shaft 83 has a lower end portion that penetrates the lower wall 53d of the housing 53 and protrudes downward, and a spindle shaft 82 of the capping head 30 is rotatably supported inside the sleeve shaft 83. A shaft 81 is supported so as to be movable up and down.

The can support stand 55 has a tapered portion 55b whose diameter increases upwardly formed at the opening of the support recess 55a that supports the bottom of the bottle can 1 in a fitted state, and a tapered portion 55b that expands in diameter toward the top. A liquid reservoir recess 55c having a smaller diameter is formed. This can support stand 55 can be attached to and detached from the base plate 51.
Note that the cover 54 will be described later.

(Drive part)
The drive unit 75 is a motor in the embodiment, and is fixed to the outer surface of the rear wall 53b of the housing 53 with a horizontal output shaft 76 facing in the front-rear direction of the pedestal 50. Further, the output shaft 76 protrudes both in the front and rear directions of the drive unit 75, with the front end being a front output shaft 76a and the rear end being a rear output shaft 76b. The front output shaft 76a passes through the rear wall 53b of the housing 53 and is connected to the head rotating mechanism 60 within the housing 53, and the rear output shaft 76b is connected to the head lifting mechanism 70.

(head rotation mechanism)
The front output shaft 76a of the drive unit 75 inserted into the housing 53 is rotatably supported by a bearing 77 fixed to the upper wall of the housing 53, and the first bevel gear 61 is fixed to the tip thereof. A second bevel gear 63, which is integral with a vertical rotating shaft 62 that is rotatably supported between the upper wall 53c and the lower wall 53d of the housing 53, is meshed with the first bevel gear 61 so as to intersect at right angles. . A spur gear 64 is fixed to this rotating shaft 62.
Further, a serration gear 65 is formed along the vertical direction on the outer circumference of the spindle shaft 82 of the capping head 30, and a part of the serration gear 65 faces the notch window 86 of the sleeve shaft 83. The serration gear 65 and the spur gear 64 are engaged with each other through a window 86.
When the output shaft 76 is rotated by the drive unit 75, the rotating shaft 62 is rotated by both bevel gears 61 and 63, and the spindle shaft 82 connected to the spur gear 64 is rotated.

(Head lifting mechanism)
A rotating disk 71 is integrally fixed to the rear output shaft 76b of the drive unit 75, and a crankshaft 72 is located at a position eccentric to the output shaft 76 on the rotating disk 71, parallel to the rear output shaft 76b. (see FIG. 9), and the tip of a link rod 73 is rotatably attached to this crankshaft 72. The link rod 73 has its base end rotatably connected to the tip of the stand shaft 78 via a rotatable joint portion 74. The stand shaft 78 is vertically fixed on the base plate 51 of the pedestal 50.
The drive unit 75 is provided with a limit switch 79 disposed above the rotating disk 71 and facing the rotating disk 71, and is detected at a position 180° opposite to the crankshaft 72 on the outer peripheral surface of the rotating disk 71. A dog 71a is fixed.

(Planar arrangement of each component)
In plan view, the output shaft 76 of the drive unit 75 is located at a position slightly shifted from the center line C in the left-right direction of the gantry 50 (which is also the center line of the housing 53) (shifted to the right in FIG. 4) in the front-rear direction. located along the
On the other hand, the head support shaft unit 80 including the sleeve shaft 83 is provided perpendicularly to the center line of the pedestal 50 at a position opposite to the front output shaft 76a (a position offset to the left in FIG. 4). . The rotation centers of the bevel gears 61, 63 and spur gear 64 rotated by the front output shaft 76a are arranged on the extension of the front output shaft 76a in plan view. Therefore, the serration gear 65 formed on the spindle shaft 82 within the sleeve shaft 83 is connected to the spur gear 64 at an angle inclined with respect to the extension line of the front output shaft 76a.

Further, a pair of guide posts 52A and 52B for guiding the vertical movement of the housing 53 are provided on both left and right sides of the housing 53. Among these, one guide post 52A is provided on the right side of the rotating shaft 62, but on the opposite side (left side of the rotating shaft 62), a sleeve shaft 83 is provided with respect to the center line C of the housing 53. Since the two guide posts 52B are offset from each other, the other guide post 52B is provided at a diagonally rear position of the sleeve shaft 83. Therefore, one guide post 52A is arranged closer to the front side of the housing 53, and the other guide post 52B is arranged closer to the rear side of the housing 53. That is, both guide posts 52A, 52B are arranged at approximately the same distance from the center line C in the left-right direction of the housing 53, but are shifted from the center of the housing 53 in opposite directions (front-back direction) in the front-back direction. It is arranged as follows.

(frame cover)
The cover 54 has a front door 54a, both side walls 54b, and a rear wall 54c so as to surround the four sides of the space below the housing 53 on the base plate 51. This cover 54 is made of transparent resin so that the inside can be viewed visually. In this case, the front door 54a is arranged ahead of the housing 53, and the rear wall 54c is arranged behind the drive section 75. Further, the both side walls 54b are arranged below the housing 53, but are set at a lower height than the front door 54a and the rear wall 54c so as not to inhibit the vertical movement of the housing 53.
The front door 54a is connected to the front end of one side wall 54b by a hinge 57, and can be fixed to the front end of the other side wall 54b by a magnet 58, and is provided with a handle 59 on the front for opening and closing operations. There is.

A control panel 90 is connected to the capping device 20, and as shown in FIG. 10, the control panel 90 is provided with a switch 91 for starting and stopping the drive section 75, an emergency stop button 92, etc. It will be done. Further, a sensor (door switch: not shown) is provided to detect the opening and closing of the front door 54a, and the capping device 20 can operate when the front door 54a is closed, and when the front door 54a is open. It is interlocked so that it cannot operate in this state. Further, in FIG. 3, reference numeral 93 indicates a vibration absorbing damper (gas spring) provided between the housing 53 and the base plate 51.

The capping device 20 configured in this manner can be used by installing the pedestal 50 on a table or the like.
In this capping device 20, when the operation is stopped, the housing 53 is disposed at the uppermost position, and the bottle can 1 is placed in a state where the cap material 11 is placed over the mouth 5 of the bottle can 1 filled with a beverage. is installed on the can support stand 55, and after closing the front door 54a of the cover 54, the switch 91 is turned on to start the drive unit 75, the output shaft 76 rotates, and as it rotates, the output shaft 76 is connected to the front output shaft 76a. The capping head 30 is rotated by the head rotation mechanism 60 via the spindle shaft 82.

On the other hand, as the output shaft 76 rotates, a rotational force acts on the rotating disk 71 of the head elevating mechanism 70, which is connected to the rear output shaft 76b on the opposite side from the head rotating mechanism 60. Since a link rod 73 is fixed to a crankshaft 72 that is eccentric from an output shaft 76, and vertical movement of the crankshaft 73 is restricted, this rotating disk 71 attempts to rotate around this crankshaft 72. . The movement direction of the housing 53 to which the drive unit 75 is fixed is restricted only to the vertical direction by the guide posts 52A and 52B, and the link rod 73 is connected to the upper end of the stand shaft 78 via the joint part 74. Therefore, the crankshaft 72 cannot rotate about the output shaft 76, but moves in the vertical direction and in the horizontal direction as the link rod 73 swings.

Specifically, if the initial position is a state in which the output shaft 76 is placed directly above the crankshaft 72, the output shaft 76 rotates and the crankshaft 72 swings the link rod 73 while, for example, outputting By moving the shaft 76 to the left, the output shaft 76 moves downward. When the output shaft 76 further rotates, the output shaft 76 further descends, and accordingly, the crankshaft 72 is disposed above the output shaft 76 while swinging the link rod 73. Thereafter, the crankshaft 72 moves to the right side of the output shaft 76 while swinging the link rod 73, so that the output shaft 76 rises. When the output shaft 76 is raised and placed at the initial position, one rotation of the output shaft 76 is completed.

With such relative movement between the output shaft 76 and the crankshaft 72, the housing 53, which is integrated with the output shaft 76 (driver 75), moves up and down. The housing 53 is lowered, and the pressure block 31 of the capping head 30 comes into contact with the cap material 11 placed on the bottle can 1, pressing the top plate portion 12 of the cap material 11 toward the bottom of the bottle can 1, and closing the cap. A stepped portion 12a is formed at the peripheral edge of the material 11.

Contrary to the housing 53 which descends with the formation of the stepped portion 12a, the pressure block 31, the pressure shaft 81, the capping head 30 and the spindle shaft 82 are prevented from descending, and the load of the coil spring 84 incorporated in the head support shaft unit 80 is reduced. It is hung vertically on the cap material 11 and the bottle can 1. Then, due to the lowering of the cone cam 85, the cam follower 43 of the capping head 30, which is in contact with the outer peripheral surface of the cone cam 85 at the lower end of the sleeve shaft 83, loses support from the inside by the enlarged diameter part 85a and reaches the height of the reduced diameter part 85b. As a result, the cam follower support arm 42 is rotated by the biasing force of the torsion spring 41 of the arm shaft 39, and the cam follower 43 is moved toward the center of the capping head 30. Since a roll support arm 40 is provided at the lower end of this arm shaft 39, this roll support arm 40 also moves toward the center of the capping head 30, and supports the first roll 34 and second roll 35 at its tip. Each abuts on the outer peripheral portion of the cap material 11.

The first roll 34 is pressed against the cylindrical portion 13 of the cap material 11 and moves along the threaded portion 7 of the bottle can 1 from below the curled portion 6 of the mouth portion 5 toward the bulged portion 8 side. That is, by rotationally moving the first roll 34 along the threaded portion 7, a threaded portion is formed in the cap material 11 so as to follow the threaded portion 7 of the bottle can 1, as shown in FIG.
On the other hand, the second roll 35 presses the capping material 11 against the bulge 8 of the bottle can 1, and rolls along the bulge 8 in the circumferential direction, while applying the flare 17 to the lower side of the bulge 8. Tuck it in so that it bites in.

For example, since the threaded portion 7 of the bottle can 1 is formed around two or more turns, the capping head 30 rotates two times after the first roll 34 and the second roll 35 contact the cap material 11 and start forming the cap material 11. Rotate upward. Capping begins in the middle of the lowering of the housing 53, and the capping operation is performed until the housing 53 passes the bottom dead center and is in the middle of rising. After the pressure block 31 forms the stepped portion 12a on the cap material 11, the pressure block 31, the pressure shaft 81, the capping head 30, and the spindle shaft 82 do not move up and down, but the sleeve shaft 83 and the cone cam 85 move together with the housing 53. moves up and down. In this case, since the serration gear 65 that meshes with the spur gear 64 inside the housing 53 is formed along the vertical direction, the length of the serration gear 65 increases as the spindle shaft 82 and the sleeve shaft 83 move up and down relative to each other. While sliding the meshing position in the direction, the meshing state is maintained, and the rotational force from the drive section 75 is transmitted to the first roll 34 and the like.

On the other hand, in the head elevating mechanism 70, the rear output shaft 76b rotates around the crankshaft 72 of the rotary disk 71, whereas the housing 53 can only move in the vertical direction due to the guide posts 52A and 52B. However, as mentioned above, the link rod 73 can swing relative to the stand shaft 78 through the joint portion 74, so by swinging the crankshaft 72 in the left-right direction, the rear output shaft 76b can be moved. can only be in the vertical direction.
In this embodiment, the capping operation for one bottle can 1 is completed by repeating the above series of steps twice (the housing 53 moves up and down twice).

The capping device 20 configured in this manner places the bottom of the bottle can 1 filled with beverage on the can support 55 on the base plate 51, covers the mouth portion 5 with the capping material 11, and then drives the capping head. 30 fixes the cap member 11 to the mouth 5 of the bottle can 1.

This capping device 20 is installed, for example, on a counter or table in a restaurant, and is used for capping bottle cans 1 filled with craft beer or the like. In this case, the output shaft 76 of the drive unit 75 is disposed offset with respect to the center line C in the left-right direction of the housing 53, and the capping head 30 is supported in the direction in which the output shaft 76 of the drive unit 75 extends. Since the shaft unit 80 is disposed on the opposite side of the output shaft 76 with respect to the center line C so that the shaft unit 80 is shifted, the dimension in the front and rear direction is formed to be smaller accordingly, and the guide posts 52A, 52B on both sides are formed to be smaller. Also, since the rear position of the head support shaft unit 80, which is disposed on one side in the left-right direction, and the position slightly closer to the front relative to this are shifted in the front-rear direction, when they are arranged side by side in the left-right direction, In comparison, the dimensions in the left and right direction can also be made smaller. Therefore, it can be installed in a narrow space such as a counter or table without protruding.

On the other hand, since the guide posts 52A and 52B are provided one on each side and are disposed offset in the front-rear direction, it is difficult for vibration to occur in both the left-right direction and the front-rear direction.
Therefore, although the device is compact, it is difficult to shake due to the load and rotational force during capping, and can be installed stably.
Furthermore, since a damper (gas spring) 93 is provided between the housing 53 and the base plate 51, this damper 93 supports the weight of the housing 53, etc., and suppresses the chatter vibration caused by its vertical movement. be able to.

In addition, when filling craft beer into bottle cans at restaurants etc., in order to prevent air from remaining inside the bottle can 1 after capping, it is recommended to overflow craft beer foam from the mouth 5 of the bottle can 1. good. In that case, foam and beer liquid will flow down from the bottle can 1 during capping, but when the can support base 55 supports the bottom of the bottle can 1 in the support recess 55a, the tapered part 55b expands in diameter upward. Therefore, even if craft beer foam or the like overflows from the mouth 5 of the bottle can 1, it can be caught by the tapered part 55b, and the liquid that has flowed down can be collected in the liquid reservoir recess 55c. Therefore, the area around the device is less likely to get dirty, and since the can support stand 55 can be attached and detached from the base plate 51, cleaning is also easy.

Note that the present invention is not limited to the configurations of the above-described embodiments, and various changes can be made to the detailed configurations without departing from the spirit of the present invention. For example, as a bottle can, a cylindrical body with a bottom is formed in advance and the opening end is reduced in diameter. After molding, a separately formed bottom cover may be wrapped tightly around the body of the cylinder.
Although the can support table is provided on the base plate 51 of the pedestal 50, the bottle can 1 may be placed on the base plate. 55c may be formed.

1 Bottle can 2 Can body 3 Shoulder 4 Neck 5 Mouth 6 Curled portion 7 Male screw portion 8 Swelling portion 10 Cap 11 Cap material 12 Top plate portion 12a Step portion 13 Cylindrical portion 17 Flare 18 Liner 20 Capping device 30 Capping head 31 Pressure block 34 First roll 35 Second roll 36 Pressure block insert 37 Spring 38 Bracket arm 39 Arm shaft 40 Roll support arm 41 Torsion spring 42 Cam follower support arm 43 Cam follower 45 Support shaft 46 Coil spring 50 Frame 51 Base plate 52 Guide post 53 Housing 54 Cover 55 Can support stand (can support part)
55a Support recess 55b Tapered part 55c Liquid reservoir recess 56 Guide sleeve 60 Head rotation mechanism 61 First bevel gear 62 Rotating shaft 63 Second bevel gear 64 Spur gear 65 Serration gear 70 Head lifting mechanism 71 Rotating disk 72 Crankshaft 73 Link rod 74 Joint part 75 Drive part 76 Output shaft 76a Front output shaft 76b Rear output shaft 77 Bearing 78 Stand shaft 80 Head support shaft unit 81 Pressure shaft 82 Spindle shaft 83 Sleeve shaft 84 Coil spring 85 Cone cam 86 Notch window

Claims (5)

A capping device that attaches a cap to the mouth of a bottle by pressing the outer peripheral surface of a cap material placed over the mouth of a bottle can against the threaded part of the mouth and forming a threaded part corresponding to the threaded part on the capping material. And,
A can support part for supporting the bottle can, and a capping head for attaching the cap by forming the thread part on the cap material placed over the mouth part of the bottle can, on a stand that can be installed on a tabletop. , a head rotation mechanism for rotating the capping head, and a head elevating mechanism for elevating the capping head,
The head rotation mechanism includes a drive unit in which an output shaft is arranged horizontally, and a rotation transmission mechanism that changes the rotation direction of the output shaft at right angles and transmits the rotation direction to the spindle shaft of the capping head,
The spindle shaft is provided at a position horizontally shifted from the extension direction of the output shaft ,
The pedestal is provided with at least a pair of guide posts that guide the lifting and lowering of the capping head,
Of the pair of guide posts, one of the guide posts is arranged behind the spindle shaft, and the other guide post is located on the opposite side of the output shaft, and the length of the output shaft is different from the one guide post. A tabletop capping device characterized in that the capping device is arranged offset in the horizontal direction . A capping device that attaches a cap to the mouth of a bottle by pressing the outer peripheral surface of a cap material placed over the mouth of a bottle can against the threaded part of the mouth and forming a threaded part corresponding to the threaded part on the capping material. And,
A can support part for supporting the bottle can, and a capping head for attaching the cap by forming the thread part on the cap material placed over the mouth part of the bottle can, on a stand that can be installed on a tabletop. , a head rotation mechanism for rotating the capping head, and a head elevating mechanism for elevating the capping head,
The head rotation mechanism includes a drive unit in which an output shaft is arranged horizontally, and a rotation transmission mechanism that changes the rotation direction of the output shaft at right angles and transmits the rotation direction to the spindle shaft of the capping head,
The spindle shaft is provided at a position horizontally shifted from the extension direction of the output shaft ,
The tabletop is characterized in that the output shaft is disposed offset from a center line in the left-right direction of the pedestal, and the spindle shaft is disposed offset from the center line in a direction opposite to the output shaft. Capping device. The output shaft is disposed offset from a center line in the left-right direction of the pedestal, and the spindle shaft is disposed offset from the center line in a direction opposite to the output shaft. Desktop capping device according to item 1 . The rotation transmission mechanism includes a bevel gear mechanism that connects the output shaft and a rotation shaft disposed in a vertical direction, a spur gear fixed to the rotation shaft, and a spur gear formed on the outer periphery of the spindle shaft. The desk capping device according to any one of claims 1 to 3, further comprising a gear that meshes with the gear. The can support portion is removably installed on the pedestal, and has a support recess that supports the bottom of the bottle can, and the diameter of the opening of the support recess gradually increases toward the opening end. The tabletop capping device according to any one of claims 1 to 4.

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