JP2738292B2 - Lid body having a sliding ring, method for manufacturing the same, sliding ring fitting device for implementing the manufacturing method, film lid manufacturing device, and lid bonding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid having a sliding ring mounted on a can such as a milk powder can, a method of manufacturing the same, a sliding ring fitting device for carrying out the manufacturing method, and a film lid manufacturing. The present invention relates to an apparatus and an apparatus for bonding the lid.

[0002]

2. Description of the Related Art In general, a lid attached to a powdered milk can or the like includes:
When the contents are scooped with a measuring spoon, a slicing ring is mounted so that the slicing-full contents can be taken out. 2. Description of the Related Art Conventionally, as a lid having a sliding ring of this type, for example, a lid as disclosed in Japanese Utility Model Laid-Open No. 5-65864 is known. The conventional one has a curled curl part on the outer periphery that can be directly wound around the can body, and a synthetic resin sliding ring is directly injected into a metal shell whose inner periphery is open in a circular shape. It is formed by molding, fixing the sliding ring to the opening edge of the shell, and releasably bonding a sealing film lid having a small knob protrudingly formed on the outer peripheral edge to the opening edge of the cutting ring. ing.

[0003] Therefore, a conventional manufacturing process of a lid having a cutting ring is a shell manufacturing process of punching and forming a shell from a blank, and inserting the shell into a mold device to injection-mold the cutting ring in the shell. And a step of manufacturing a film lid, and a step of adhering the film lid to the cutting ring. The respective steps are performed by connecting the shell manufacturing apparatus, the injection molding apparatus, the film lid manufacturing apparatus, and the film lid to the cutting ring. It is manufactured by using a bonding device for bonding.

[0004]

As described above, the lid having the conventional cutting ring has a shell made of metal and a cutting ring made of plastic, and the cutting ring is fixed to the inner peripheral edge of the opening of the shell. For this reason, it is difficult to secure the sealing performance by forming them separately and then bonding and integrating them. Therefore, the sliding ring is directly injection-molded on the inner peripheral edge of the shell opening. As a result, the mold structure becomes complicated,
There was also a problem in manufacturing efficiency. In addition, the sheet material for sealing,
In order to facilitate peeling, a knob is protruded from its peripheral edge and adhered to the above-mentioned cutting ring. However, when the knob is formed large, it protrudes outward from the outer periphery of the shell to form a can lid. Not only does it cause various inconveniences in the packaging form at the time of shipment from the factory (packing the can lid in a cylindrical shape with the can lid superimposed), the process of winding the can lid around the can body, etc. At the distribution stage, if the knobs protrude outside the can body, it will be a hindrance in box packing and display, etc., so the size is limited, and in the past it was only small enough to be picked with your fingertips There was a problem that it could not be formed and the opening was difficult.

The present invention has been devised in view of the above circumstances, and can be manufactured by separately forming a shell, a sliding ring, and a film lid in a can lid having a sliding ring, and then integrally bonding them. A novel lid body having a sliding ring that does not interfere with the production of the lid body or at the distribution stage even if a finger ring having a size large enough to hang a fingertip when opening the film lid and its production It is an object of the present invention to provide a method, a sliding ring fitting device for carrying out the manufacturing method, and a lid bonding device.

[0006]

According to the present invention, there is provided a lid having a sliding ring according to the present invention, wherein the lid has a rolled curling portion for winding around a container body and a film lid bonding portion, and the inside is open. A metal shell whose inner peripheral edge is near a sliding ring fitting portion, a ring whose inner peripheral edge substantially hangs down and a back surface side is a shell fitting portion, and an inner peripheral edge of the ring. A sliding ring formed by integrally forming a sliding member formed of plastic, a film lid main body covering an opening of the sliding cutting ring, and a knob protruding from an outer peripheral portion of the film lid main body. Having a film lid formed of a film material based on an aluminum foil having a thermal adhesive layer on the back surface, wherein the shell and the sliding ring are integrated by fitting,
Further, the film lid member is detachably bonded to the shell by thermal bonding.

It is desirable that the knob portion be formed of a finger ring, and that the finger ring be folded on the upper surface of the film lid main body and hold the folded state by hot melt bonding or the like. In addition, by thermally bonding the sliding ring fitting portion of the shell and the shell fitting portion of the sliding ring, the sliding ring does not come off the shell when the contents are scooped using the sliding member. At the same time, it is desirable that the powder hardly enters the fitting portion.

The method of manufacturing a lid according to the present invention for manufacturing a lid having the above-mentioned cutting ring includes a step of manufacturing a shell from a blank, a step of injection-molding the cutting ring separately.
A step of fitting the sliding ring to the shell, a film lid manufacturing step of punching and forming a film lid from a film based on an aluminum foil having a thermal adhesive layer on the back surface, and the sliding ring is fitted. The method is characterized in that it comprises a bonding step in which a shell and the film lid are overlapped and thermally bonded, and the metal shell and the film lid material are peelably bonded to each other.

[0009] In the lid manufacturing step, the film lid manufacturing step includes a finger ring forming step of punching an outer peripheral portion of the finger ring and a center circle of the finger hole to form a finger ring, an inner peripheral edge and an outer edge of the finger ring. Finger hanging ring curl forming process to form curl on the periphery, curling formed finger hanging ring on the top surface of the film lid main body, punching out the outer edge of the film lid main body and separating the film lid from the film at the same time Desirably, the method comprises a step of temporarily bonding the sliding ring to the fitted shell.

[0010] Further, a sliding ring fitting apparatus of the present invention for performing a step of fitting the sliding ring to the shell has a plurality of heads rotating around a main shaft.
For each head , a lifter that is driven up and down and has an upper surface serving as a shell support table, and a sliding ring chuck device that can be driven up and down and opposed above the lifter are arranged. doing.

The sliding ring chuck device has an outer cylinder supported vertically and a middle cylinder fitted inside the outer cylinder so as to be vertically movable, and a lower end of the outer cylinder. A pair of expander-type chuck members are swingably attached to the fixed pivot, and a chuck expanding cam for expanding the chuck member is fixed to the lower end of the middle cylinder, and the middle cylinder descends. By expanding the chuck member so that the chuck member engages with the inner peripheral edge of the ring and holds the ring, the ring can be reliably held.

By providing a sensor shaft for detecting whether or not the chuck member holds the sliding ring inside the middle cylinder, it is possible to reliably prevent the non-attachment of the sliding ring and the like. be able to.

Further, a film lid manufacturing apparatus for manufacturing the film lid material includes a film feeder for feeding a long film which is a film lid material, and an outer periphery of a finger hook ring which is sequentially arranged along the film feed direction. finger hook ring forming device by punching a part and finger hook hole center circle portion to form a finger hook ring finger hook ring curling apparatus for forming a curl on an inner peripheral edge and the outer peripheral edge of the finger hook ring, tip to form a crease on the finger hook ring base Floating on
Crimping device that turns to the inclined state , twisted spiral
Has a guide surface, folded to overlap folding the upper surface of the film lid body said finger hook ring from the fold line by the guide surface
The object is achieved by having a configuration comprising a stacking guide device and a film lid separating device for punching an outer peripheral edge of the film lid main body and separating the film lid from the film. In this apparatus, if a temporary bonding device is provided below the film lid separating device to temporarily bond the film lid separated from the film to the shell to which the sliding ring is fitted, the film lid is more accurately bonded to the shell. can do.

The bonding apparatus for performing the bonding step of bonding the shell, the cutting ring, and the film lid includes a supply turret for supplying a lid body having the film lid temporarily bonded to the shell, and a supply turret for bonding the temporarily bonded film lid to the shell. A heating coil body configured to hold the lid body and perform high-frequency induction heating from below, holding the lid body, and a discharge turret configured to discharge a lid body that has been thermally bonded from the bonding head. And a pressurizing device for pressing the lid from above is disposed between the heating coil and the heating coil.

[0015]

The lid having a sliding ring according to the present invention integrates a separately formed shell and a sliding ring by fitting, but the shell has a sliding ring fitting portion near the inner peripheral edge. Since the sliding ring is provided with a shell fitting portion on the back surface side, after fitting the sliding ring to the shell, heating from the back surface by high frequency induction heating and bonding the film lid to the shell, so that it is sure. Shell and film lid, or shell and sliding ring and film lid can be bonded together, so that shell and sliding ring and sealing can be easily done without injection molding integral with shell as in the past. The sheet (film lid) can be integrated, and the efficiency of the manufacturing process can be improved.

Further, since the lid of the present invention has a knob portion such as a finger hook ring large enough to hold the film lid when opening, the opening is easy. And since the knob part has a sufficient size, it is folded on the upper surface of the film lid, so that it does not protrude from the outer peripheral surface of the film lid and the outer peripheral surface of the lid, so that there is no trouble in handling. Never come. By forming the knob with a finger ring, the finger can be pulled with a finger, so that the opening can be made easier.

The lid of the present invention is assembled by fitting a sliding ring formed by injection molding into a shell formed from a blank by a sliding ring fitting device, and forming the film from a film by a film lid forming device. The film lid is mounted on the upper surface of the shell to which the sliding ring is fitted and temporarily bonded, and then bonded and integrated by a bonding device. Accordingly, since the shell and the cutting ring are separately formed and assembled, each can be subjected to batch processing, and the process management is easy.

The film lid is formed in multiple steps sequentially from a long film. First, a finger hanging ring is formed, a fold is formed at the base thereof, and the finger hanging ring is folded over the upper surface of the film lid body while being conveyed. After that, the outer peripheral portion of the film lid body is punched out and cut off from the film, and at the same time, the slide ring is temporarily bonded to the fitted shell, so that the finger hanging ring can be automatically and reliably folded back and the lid body can be folded. Transport is assured.

The fitting of the grinding ring to the shell is performed by a grinding ring fitting device, and each head of the grinding ring fitting device includes a lifter and a grinding ring chuck device located above the lifter. Holding the shell on the lifter, the sliding ring chuck device holds the sliding ring, presses against the shell on the lifter, fits the hanging inner peripheral edge to the shell inner peripheral edge, and The cutting ring fitting part and the film lid bonding part are brought into close contact. At this time, by forming the chuck member of the sliding ring chuck device into an expander type, the chuck member can be expanded and engaged with the inner peripheral edge of the ring to reliably hold the sliding ring by frictional force. . And since it engages with the inner peripheral edge of the cutting ring, the chuck member can be securely fitted without disturbing the fitting of the outer peripheral edge of the cutting ring to the shell.

Further, the sensor shaft is provided on the sliding ring so as to be vertically movable. When the chuck member holds the sliding ring, the sensor shaft is hindered from descending by the sliding ring, so that the sensor shaft is in the upper position. By detecting the position, it can be detected that the chuck portion holds the sliding ring. Therefore,
By sensing the position of the sensor shaft, it is possible to detect whether or not the chuck member holds the sliding ring, and it is possible to prevent the occurrence of trouble in the fitting process.

In the bonding apparatus, while the bonding head rotates between the supply turret and the discharge turret, the lid held by the bonding head passes through the high-frequency induction heating section and the pressurized cooling section, and The body is heated from below by induction heating and moderately pressurized by a pressing device to bond the shell and the film lid or the shell and the sliding ring and the film lid together.

The heating coil body is formed so that its lid supporting portion conforms to the shape of the rear surface of the lid, supports the lid by directly contacting the rear surface of the lid, and when the heating coil is reached, the heating coil is heated. Is supplied to the cover, and the lid is heated from the back surface by high-frequency induction heating. Since the lid is supported by the heating coil and heated from below, it can be heated efficiently and heated by high frequency induction, so that the heating temperature of the object to be heated can be freely controlled, and it can always be heated to the optimal bonding temperature. it can. Also, if the inner peripheral edge of the shell is effectively heated, the cut-off ring is securely bonded even at the edge portion, and adhesion with the cut-off ring can be achieved.

It should be noted that even if the fitting portion between the shell and the sliding ring is bonded, the opening of the film lid is not affected. When the film lid is bonded to the lid fitted with the sliding ring, the upper surface of the sliding ring is positioned lower than the film lid bonding portion of the shell so that the film lid does not adhere to the upper surface of the sliding ring. In this case, the film lid can be easily opened without adhering to the sliding ring.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show an embodiment of a lid having a sliding ring according to the present invention. Lid 1 of the present embodiment
Is a metal shell 2 and a synthetic resin sliding ring 3
And a film lid 4 made of a composite film of an aluminum foil and a thermoadhesive resin.

As shown in FIG. 1, the shell 2 has a winding curl portion 5 (FIG. 1 shows a state in which the shell 2 is wound around the can body) to be wound around the can body. The inner peripheral edge thereof is opened to form a slicing ring fitting portion 6, and an intermediate portion thereof projects upward in a ring shape to form a stepped film lid bonding portion 7. On the surface of the shell 2, a coating film having thermal adhesiveness is formed so that the film lid or the film lid and the slicing ring can be bonded by thermal bonding. The sliding ring fitting portion 6 is composed of a flat portion 8 which is stepped from the film lid bonding portion 7 and a hanging portion 9 which is bent substantially perpendicularly from the flat portion to form a cylindrical wall. .

As shown in FIG. 1, the cross-section of the sliding ring 3 hangs down along the flange portion 10 and the hanging portion 9 on the flat portion 8 of the sliding-ring ring fitting portion of the shell 2. A ring 12 having a hook-like cross section and a peripheral wall 11;
A sliding cutting member 13 provided between the inner peripheral walls of the ring is injection-molded integrally, and is fitted to a sliding cutting ring fitting portion 6 of the shell 2 by a sliding cutting ring fitting device as described later. It is integrated with. Further, if necessary, as described later, the film lid 4 may be bonded to the shell 2 by high-frequency induction heating, and at the same time, the shell and the sliding ring 3 may be bonded.

The film lid 4 is formed by punching out a composite film material having an inner surface formed of a heat-adhesive resin layer using an aluminum foil as a base material. As shown in FIG. A finger ring 16 having a finger hole 15 as a part is provided. The inner peripheral edge and the outer peripheral edge of the finger hanging ring, as shown in cross section in FIG.
It is curled and reinforced to make it easier to put your fingers. The finger ring 16 has an inner diameter d of a finger hole 12 to 21 mm, a finger ring width t of 2 to 6 mm, and a maximum projection distance L from an outer peripheral edge of the film lid main body portion so that a finger can enter the finger. 16-47 mm, more preferably d =
It is formed in a range of 16 to 20 mm, t = 3 to 5 mm, and L = 32 to 38 mm.

The finger ring 16 is bent on the upper surface of the film lid main body in the film lid manufacturing process so that the finger ring 16 does not protrude outward from the outer peripheral surface of the film lid. It is bonded to the outer peripheral surface of the main body by hot melt bonding 19 (see FIG. 1) which can be easily peeled off during use. As a result, even if the finger ring is formed to be particularly large as compared with the related art as described above, the finger ring does not protrude in the lid manufacturing process and the distribution stage, and does not become an obstacle.

In the film lid 4 having the above-described structure, the outer peripheral portion of the back surface of the film lid main body 14 is formed by the film lid bonding portion 7 of the shell 2.
Is thermally bonded by high-frequency induction heating. The film cover 4 may be thermally bonded to the top surface of the sliding ring and the film cover bonding portion 7 of the shell 2, but the former is preferable from the viewpoint of opening properties. In the present embodiment, the circular central portion 18 of the film lid main body 14 is appropriately embossed.

Lid 1 having a sliding ring of the present embodiment
Is formed as described above, and is formed by integrating three separately formed members. As compared with the conventional case, it is easy to form a sliding ring, and the film lid 4 has a sufficient space for inserting a finger. Since the finger ring 16 of an appropriate size is provided, the opening is easy.

The lid 1 is assembled by fitting a slide ring formed by injection molding into a shell formed from a blank by a multi-step press using a slide ring fitting device, and manufacturing a film lid from a film. The film lid formed by the device is placed on the upper surface of the lid body into which the above-mentioned cutting ring has been inserted, and the shell and the film lid or the shell and the above-mentioned cutting ring and the film lid are adhered and integrated by an adhesive device. Is done. Hereinafter, a main configuration of the manufacturing apparatus will be described in detail.

FIG. 6 shows the overall arrangement of the sliding ring fitting device . In the figure, reference numeral 20 denotes a shell stacker, in which shells formed by punching from a blank are stacked and stored. Yes,
The sheets are taken out one by one by the take-out turret 21,
It is sent to the supply turret 23 via the relay turret 22. On the supply turret 23, the cutting ring 3 conveyed by the cutting ring supply conveyor 24 is placed on the shell, and sent to the cutting ring fitting device 25.

The sliding ring fitting device 25 is composed of six heads rotating around a main shaft, and the main part of one head is shown in FIG. In the figure, reference numeral 26 denotes a fixed main shaft, and a lower turntable 29 having a boss 28 is rotatably bearing on the main shaft 26, and a driving gear 27 fixed to the boss 28 is provided.
The lower turntable 29 is rotationally driven by a driving device (not shown) via the. A lifter 30 is disposed on the lower turntable 29 for each head.

The lifter 30 has an upper surface serving as a shell support base 31 for supporting the shell. The support shaft of the lifter 30 is fitted to the lower rotary base 29 so as to be vertically movable, and a lower end of a fixed lifter operation cam 32 annularly disposed at the lower end thereof. The cam follower 33 fitted in the cam groove is fixed.

A boss 36 is fixed to the boss 28.
, On which a chuck device 37 is arranged at the same pitch as the lifter 30. The chuck device includes an outer cylinder 38 vertically movably penetrating the upper turntable 35, a middle cylinder 39 fitted up and down inside the outer cylinder, and a sensor shaft 40 inside the middle cylinder. Are fitted. A case 41 is fixed to the lower end of the outer cylinder 38, and a pair of expander-type chuck members 45 are swingably attached to a pivot 42 fixed in the case.

The chuck member 45 has a sliding ring engagement surface 43 formed on an outer peripheral portion, and a cam follower surface 44 which engages with a chuck expanding cam for expanding the chuck member on an inner peripheral portion has a downwardly squeezed shape. Is formed. A cam follower 47 that fits into a cam groove of a chuck vertical movement cam 46 that moves the outer cylinder up and down is fixed on the upper side of the outer cylinder 38. The rotation of the turntable causes the chuck up and down fixed to the fixed frame to move. Vertical movement is controlled according to the shape of the cam groove of the moving cam 46.

On the other hand, a chuck expanding cam 50 for expanding the chuck member 45 is fixed to a lower end portion of the middle cylinder 39, and is engaged with the cam follower surface 44 of the chuck member 45 by lowering the middle cylinder. Is swung against the spring 51 biasing in the diameter-reducing direction to expand. 52
Is a middle cylinder operation cam for moving the middle cylinder 39 up and down, like the chuck vertical movement cam 46, has an endless cam groove fixed to a fixed frame, and is fixed to the middle cylinder 39 in the cam groove. The cam follower 53 is fitted.

A sensor shaft 4 is provided at the center of the center cylinder 39.
0 is loosely fitted, a sensing piece 55 is fixed to the upper end of the sensor shaft, and a sliding ring detecting plate 56 located in the chuck is fixed to the lower end. In addition, sensor axis 4
An adjusting bolt 57 is screwed into the upper part of the center cylinder 0, and the adjusting bolt is supported on a support base 59 which is supported on the upper end of the middle cylinder by a spring 58 so as to be able to move up and down. . In addition, the engagement of the sliding ring detecting plate 56 with the lower end of the pivot 42 restricts the upward movement (see FIG. 8A). When the support base 59 is pushed down by the sensor shaft operation cam 60 provided at a predetermined position of the fixed frame, the sensor shaft can be lowered accordingly.

The sliding ring fitting device is configured as described above, and the sliding ring is fitted to the shell by the device as follows. The supply turret 23 holds the sliding ring on the upper surface and the shell on the lower surface, respectively, rotates in synchronization with the sliding ring fitting device, and supplies the sliding ring and the shell to the sliding ring fitting device. By the time the heads of the sliding ring fitting device reach the supply position, the state shown in FIG. 7, that is, the lifter 30 is at the lowered position, the chuck device 37 is at the raised position, and The chuck operating cam 39 is raised and the chuck member 45 is in a reduced diameter state, and the preparation for receiving the shell and the cutting ring is completed.

In this state, when the lower turntable 29 and the upper turntable 35 rotate around the main shaft in synchronization with each other and reach the receiving position from the supply turret 23, as shown in FIG. By being lifted by the lifter cam 32, the shell 2 is received on the shell support from the supply turret. On the other hand, the chuck device 37 is lowered by the chuck vertical movement cam 46 to position the chuck member 45 inside the sliding ring. In this state, the middle cylinder 39 is lowered by the middle cylinder operation cam 52, and the chuck expansion cam 50 is moved.
Abuts on the cam follower surface of the chuck member and pushes and expands the chuck member 45, so that the sliding ring engaging surface 43 abuts on the inner peripheral surface of the sliding ring to hold the sliding ring 3. In this state, the sensor shaft 40 is urged by the spring 58 to be at the raised position, and the sliding ring detecting disc is in contact with the pivot.

As the head further rotates, the chuck device 37 descends to press the sliding ring 3 against the shell 2 as shown in FIG. At this time, the support base 59 is pushed down by the sensor shaft operation cam 60, and the sensor shaft can be lowered by that amount, but the sliding ring detecting plate 56 hits the sliding member of the sliding ring held by the chuck. The descent is restricted, and the descent cannot be completed as shown in FIG. If the sliding ring 3 is not held by the chuck member 45,
The sensor shaft 40 is further lowered, and the sensing piece 55 is
It descends to the position shown by the virtual line b in (b). Therefore, by detecting the position of the sensing piece 55 with the sensor 54, the presence or absence of the sliding ring can be reliably detected.

As the head is further rotated, FIG.
As shown in (a), the support base 59 is released from the pressing of the sensor shaft operation cam 60, and the sensor shaft 40 is moved to the middle cylinder 39.
And the sliding ring detecting plate 56 comes into contact with the pivot 42, and the detection ends. At the same time, when the middle cylinder 39 is moved up by the middle cylinder operation cam 52, the chuck opening / closing cam 50 is moved up, and the chuck member 45 is contracted by a spring force to release the holding of the sliding ring.

Thereafter, as the head further rotates, as shown in FIG.
As a result, the chuck device 37 moves up, and the lifter 30 also starts moving down to the initial position. At this time, the support base 59 is pushed down again against the spring 58 by the sensor shaft operation cam 60, and as a result, the adjusting bolt 57 is lowered until it comes into contact with the support base surface, so that the sliding ring detection plate 56 is located below the chuck lower end surface. Protrude. However, if the sliding ring is still held by the chuck member 45, the sliding ring detecting plate abuts against the sliding piece of the sliding ring to prevent the sliding ring from descending. Line c
Stop at the position indicated by. Therefore, by detecting the position of the sensing piece 55 at that time by the sensor 54, it is possible to detect whether or not the chuck is holding the sliding-off ring. The ring can be press fit.

After the above operation, the shell to which the sliding ring has been pressed is removed from the shell support base 31 of the lifter 30.
Is discharged to the discharge turret 61 (FIG. 6), and before returning to the position of the supply turret 23, it returns to the state shown in FIG. 8A and is ready for the next operation. The sliding engagement device of the present embodiment has six heads, which are continuously rotated, so that the production efficiency is very high.

The shell fitted with the sliding ring is conveyed by the conveyor 62 to the shell feeder in the next step, and sent to the film lid manufacturing device by the shell feeder, where it is manufactured by the film lid manufacturing device. The film lid is temporarily bonded.

Film lid manufacturing apparatus The film lid 4 is formed by a finger ring forming step, a finger ring curl forming step, and a multi-step press from a long film 70 having an aluminum foil as a base material and a heat adhesive film laminated on its lower surface. It is formed through a finger ring folding process and a film lid separating / temporary bonding process. The process diagram is shown in FIG. In the figure, the process proceeds from left to right. First, in a first step (1), circular holes 71 and 72 are formed by punching circular holes 71 and 72 at a position where a circular arc portion at the base of the finger ring is formed and a central position of the finger hole. Second step (2)
The circular holes 7 on both sides so as to form the outer periphery of the finger ring
Then, the arc-shaped groove 73 connecting the two is punched out, and the finger ring forming step is completed. Next, in a third step (3), which is a finger-hanging ring curl forming step, a curl process for forming curls 17 upward on the inner and outer peripheral edges of the finger-holding ring is performed as shown in FIG.

In the fourth step (4), embossing is performed on the central portion 18 of the film lid. Next, the fifth step (5) to the seventh step (7) are the folding step of the finger ring,
In step (5), the folds are formed and the hot melt adhesive is applied to the flat portion 16a of the finger ring,
After the step (6), the finger ring is gradually bent to the upper surface of the film lid main body, and the finger ring which has been bent in the seventh step (7) is pressed from above so as not to return, and the finger ring 16 is held down by the film lid. The hot melt bonded portion 19 (see FIG. 1) is formed by easily and releasably bonding to the main body portion 14.

In an eighth step (8), the outer peripheral portion of the film lid body is punched and cut off from the film, and the sliding ring is superimposed on the upper surface of the fitted shell, thereby temporarily bonding the shell.

FIG. 11 is a schematic view of a film lid manufacturing apparatus comprising a multi-step press for performing the above-described steps. The film lid manufacturing apparatus 75 is configured such that the long film 70 as a film lid material is fed from the left to the right in the figure by appropriate film feeders 76 and 77, and the first to the first are fed along the film transfer direction. A die assembly for performing the eight steps is attached to the lower die bed 78 and the upper die bed 79 at the positions indicated by dashed lines in the figure.

Of the die assemblies that perform the above steps,
12 and 13 show a finger hanging ring curling device for curling a finger hanging ring in the step, FIG. 15 shows a crease forming die assembly for forming a fold in the fifth step, and hot melt is applied to a flat portion of the finger hanging ring. Fig. 1
6 and the folding die assembly of the sixth step and the seventh step are shown in FIGS.

FIG. 12 is a longitudinal sectional view of the finger hanging ring curling device 87 as viewed from the front. The right side from the center line is located at the film supply level with the upper die and the lower die sandwiching the film from both sides. And the left side shows a state of descending from that state. In the figure, reference numeral 80 denotes an upper die shoe to which an upper die assembly is attached. The upper die assembly is provided with an outer upper die 82 in a die holder 81, a cylindrical upper wrinkle holder 83 inside the outer upper die, an inner upper die 84 inside the upper wrinkle holder, and an erect center. The upper wrinkle holder 83 is supported by the die holder 81 via a spring 86.

On the other hand, the lower die assembly is a lower die shoe 9.
0, facing the upper die assembly, an outer lower die 93 on the die holder 92, a cylindrical lower wrinkle holder 94 inside the outer lower die, an inner lower die 95 inside the lower wrinkle holder, and a center. The outer lower die 93 and the inner lower die 95 are supported by lower die holders 92 via springs 97 and 98, respectively. Outer lower die 9
As shown in an enlarged view in FIG. 13, a curl forming groove 99 having an arc-shaped cross section having the same inner diameter as the outer diameter of the curl for forming the curl is provided on the corner edge of the inner lower die 95 and the inner lower die 95 which is in contact with the lower wrinkle holder 94. , 100 are formed.

The finger ring curling device 8 of the present embodiment.
When the film 70 on which the outer periphery of the finger ring is formed reaches the processing position in the previous step, the end faces of the upper die assembly and the lower die assembly approach the feed line 89, and The central annular portion is sandwiched between the upper wrinkle retainer 83 and the lower wrinkle retainer 94, the outer edge thereof is sandwiched between the outer upper die 82 and the outer lower die 93, and the inner edge is sandwiched between the inner upper die 84 and the inner lower die 95. This state is shown on the right side of the center line in FIG.

When the upper die shoe 80 is lowered in this state, the center annular portion of the finger hook ring sandwiched by the two wrinkle holders is not displaced from the feed surface because the spring 86 biasing the upper wrinkle holder 83 is compressed. However, the inner upper die 84 and the outer upper die 82 descend together with the inner lower die 95 and the outer lower die 93 against the springs 98 and 97 to bend the outer peripheral edge and the inner peripheral edge of the finger ring downward. This state is shown on the left side of the center line in FIG. 12, and an enlarged view thereof is shown on the left side of the center line in FIG.

When the upper die shoe 90 rises from this state, the outer lower die 93 and the inner lower die 95 follow the outer upper die 82 and the inner upper die 84 by their spring force and rise. On the way,
While the bent edges on the inner and outer peripheries of the finger hanging ring are engaged with the curl forming grooves 99 and 100 of the inner lower die 95 and the outer lower die 93, the curl is gradually formed. As shown on the right side, curls 17 are formed on the inner and outer peripheral edges of the ring.

FIG. 14 shows a folding device 105 for performing the fifth to seventh steps for folding the finger ring 16 curled on the inner and outer peripheral edges in the previous step on the upper surface of the film lid body. A station A is provided with a crease device 110 shown in FIG. 15 and a hot melt coating device 106 shown in FIG. 16. In a station B, as shown in FIG. A folding guide device 120 for folding on the upper surface of the main body is arranged, and a hammer device for hitting and crushing and bonding the fold bent portion from above so that the folded finger ring shown in FIG. Is arranged.

In FIG. 15 showing the creasing device 110 for performing the fifth step, reference numeral 111 denotes an upper die shoe, and the die holder 1 fixed to the upper die shoe.
In FIG. 12, a folding knife 113 having a folding blade 114 at the lower end is held via a spring 115. A lower die shoe 116 has a groove 118 having a triangular cross section so that the upper end of the lower die shoe is fitted into a die holder 117 fixed to the lower die shoe.
Is formed, and a receiver 119 in which is formed is attached.

The creasing device 110 of the present embodiment is configured as described above. When the film curled on the inner and outer peripheral edges of the finger ring in the previous process reaches the position of the creasing device 110, the upper die shoe 111 is moved. By descending, the base of the finger ring is creased by the knife 11.
A fold line m (FIG. 4) is formed by being sandwiched between 3 and the receiver 119, and as a result, the finger ring portion is in a state in which the tip end is lifted up and inclined upward as shown by a virtual line in FIG.

As shown in FIG. 16, the hot-melt coating apparatus 106 has a hot-melt coating nozzle 107 attached to a lower die shoe 116. After forming a fold line, the hot-melt coating nozzle 106 is spot-coated on one of the flat portions of the finger ring. It is supposed to. Hot melt coating equipment
In this embodiment, it is provided next to the creasing device,
It may be provided before the creasing device.

[0060] Figure 17 shows a folded guide equipment 120 disposed in the station B. The folded guide device 120 has a helical guide surface 121 twisted about 180 ° in the Roadaishu 116 (is shown in a grid pattern in FIG. 17). As the cover proceeds to the station B with the folds formed at the A station and the tip of the finger hanging ring raised, the finger hanging ring is gradually raised by engaging with the guide surface, and the fold line m moves from the fold line m. It is folded on the upper surface, reaches the C station while maintaining its state, and is hammered by the hammer device shown in FIG.
The fold is beaten from above to ensure the fold is formed and hot melt bonding is performed, and the finger ring is bent to the upper surface of the film lid body so as not to hinder subsequent handling of the lid. Maintained state.

In FIG. 18, reference numeral 125 denotes a hammer, which is a die holder 126 via a spring 127.
Is attached to the upper die shoe 111. 128 is a hammer receiver, and is a die holder 129
Is fixed to the lower die shoe 116.

In the film lid in which the folding of the finger ring is completed by the seventh step, the outer periphery of the film lid main body is punched out by the film lid separating device in the next eighth step, and the film lid is completely separated from the film 70. It is. Also,
Below the film lid separating device, a shell fitted with a scuff ring in the shell forming process has been sent, and the film lid separated from the film is placed on the upper surface of the shell at the same time as the separation, and the temporary bonding device Temporary bonding between the shell and the film lid is performed.

As shown in FIG. 19, the temporary bonding device 130 is disposed below the film lid separating device, and a plurality of temporary bonding devices 130 are provided below the shell mounting table 131 on which the shell into which the sliding ring is fitted is mounted. Four ultrasonic vibration horns 132 in this embodiment are arranged so as to be vertically movable. When the film lid separated from the film is mounted on the shell mounted on the shell mounting table, the ultrasonic vibration horn 132 rises and applies ultrasonic vibration to a plurality of locations at appropriate intervals from the lower surface of the shell,
The shell and the film lid are temporarily bonded in spots by ultrasonic waves.

Bonding Device The actual bonding is performed by a bonding device 140 shown in FIGS. The bonding device 140 includes a supply turret 141 for supplying a lid on which temporary bonding has been performed, a bonding head 142,
Discharge turret 160 for discharging the finished product from the bonding head
It is composed of The bonding head has a head at the same pitch as the supply turret and the discharge turret on the outer peripheral portion thereof, and while the bonding head rotates between the supply turret and the discharge turret, the lid held by the head has a high frequency. Shell through the induction heating section, pressurized cooling section,
The sliding ring and the film lid are integrally bonded.

As shown in FIG. 21, a heating coil body 143 constituting a support table for the lid is disposed on each head, and a pressurizing member for pressing the lid between the heating coil body and the heating coil body is provided above the heating coil body 143. The pressure body 144 is arranged to be vertically movable.

A detailed view of the heating coil body 143 is shown in FIG. In the figure, reference numeral 145 denotes an insulator formed of ceramics constituting a support for the lid, and a copper tube 146 serving as a heating coil is disposed inside the insulator. As shown in FIG. 21, the copper tube passes through a booth bar 147 arranged for each head of the bonding apparatus and passes through a rotating CT.
148 ₂ . When the head reaches the heating zone, supplied with high frequency power rotating side CT148 ₂ from the fixed side CT148 ₁ disposed along the heating zone
You. The fixed side CT148 ₁ is connected to the booth bar 1
It is connected to a high-frequency oscillator 150 via 49. In FIG. 22, reference numeral 151 denotes a heating coil body ferrite, and 152 denotes a heating coil base.

The insulator 145 is formed in an annular shape, and its lid supporting portion is formed so as to conform to the shape of the back surface of the lid 1 as shown in FIG. It comes into direct contact with the bonding portion 7 and the sliding ring fitting 6 to heat the lid placed thereon from the bottom surface (that is, from below).

The pressing body 144 supports a pressing head 156 having a slightly larger outer diameter than the film lid bonding portion of the lid by a cylinder 155 so as to be movable up and down.
The lid supported by 3 is pressed from above. An elastic body is provided on a lower surface portion of the pressing head 156 which is in contact with the film lid to cushion the pressing head, and the pressing head is connected to a cylinder rod via a spring 157.

The bonding apparatus according to the present embodiment is configured as described above, and the pressing body 144 is placed before the lid 1 is placed on the lid supporting portion of the insulator 145 from the supply turret and reaches the heating station. Press head 156 descends to hold the lid 1 between itself and the insulator 145. When the heating coil is reached in this state, high-frequency power is supplied to the heating coil as described above, and the lid is heated by high-frequency induction heating. When the lid is heated and the lid is pressurized with an appropriate pressure, the film lid 4 comes into close contact with and adheres to the film lid bonding portion 7 of the shell 2. In addition, the cutting ring 3 is bonded to the shell 2 as needed.

When the head passes through the heating zone, a fixed CT
Then, the supply of the high-frequency power to the rotating CT is cut off, the heating is stopped, and the cooling is started. In the meantime, the pressurization by the pressurizing body 144 is continued, pressurized cooling is performed for a certain time, and when approaching the position of the discharge turret 160 , the pressurizing head rises, and the completed lid is discharged by the discharge turret. Although each embodiment of the present invention has been described above, each invention of the present application is not limited to the above-described embodiment, and it goes without saying that various design changes can be made within the scope of the technical tank.

[0071]

The invention of the present application has the following special effects. In the lid having the sliding ring according to the present invention, the opening is easy because the film lid has a knob of a sufficient size. Even if the knob has a sufficient size, it is folded over the upper surface of the film lid, so that it does not protrude from the outer peripheral surface of the film lid and the outer peripheral surface of the lid, and is easy to handle.

By forming the knob portion with a finger ring, the opening can be made easier. In addition, by providing a film lid adhesive portion and a sliding ring fitting portion on the shell,
A lid is obtained which is hermetically sealed by the film lid and the shell and in which the sliding ring is securely fixed to the shell. Further, if the sliding ring and the shell are thermally bonded, the sliding ring can be more securely fixed and the contents of the powder are prevented from entering the fitting portion between the sliding ring and the shell.

According to the method and the apparatus for manufacturing the lid of the present invention, the separately formed shell and sliding ring can be integrated by fitting or fitting and heat bonding, so that manufacturing is easy and cost is reduced. Can be reduced.

Further, since the finger ring is automatically folded on the upper surface of the film lid, it has become possible to obtain a lid having a finger ring which could not be used because it was difficult to handle conventionally.

According to the sliding ring fitting device of the present invention, the sliding ring can be automatically and securely fitted to the shell, and the work efficiency can be improved. Further, since the chuck member holding the sliding ring is formed in an expander type, the sliding ring can be securely fitted without hindering the fitting to the shell.

Further, by providing the sensor shaft, it is possible to reliably detect whether or not the sliding ring is held by the chuck or whether or not the sliding ring is fitted to the shell. The occurrence of trouble in the process can be prevented.

According to the bonding apparatus of the present invention, since the lid is heated and bonded from the lower surface by high-frequency induction heating, the shell can be heated efficiently, and the film lid or both the film lid and the sliding ring can be firmly attached to the shell. It can be bonded and integrated.

Then, the heating temperature can be freely controlled by high-frequency induction heating to heat the lid to the optimum temperature, and the lid can be pressurized at an appropriate pressure by the pressurizing device, so Can be adhered to.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of a lid having a sliding ring according to an embodiment of the present invention, which is wound around a can body.

FIG. 2 is a plan view showing a state in which the lid having a sliding ring according to the embodiment of the present invention is wound around a can body and a film lid is peeled off.

FIG. 3 is a longitudinal sectional view thereof.

FIG. 4 is a plan view of a film lid.

FIG. 5 is an enlarged cross-sectional view taken along the line AA of FIG. 4;

FIG. 6 is a schematic view showing an arrangement of a sliding ring fitting device according to an embodiment of the present invention.

FIG. 7 is a longitudinal sectional view showing a main part of a head of the sliding ring fitting device according to the embodiment of the present invention.

8 (a) and 8 (b) are longitudinal sectional views of a main part of the head showing an operation state of the sliding ring fitting device.

9 (a) and 9 (b) are longitudinal sectional views of a main part of the head showing an operation state following FIG. 8 of the sliding ring fitting device.

FIG. 10 is an explanatory view showing a manufacturing process of the film lid.

FIG. 11 is a schematic front view of a main part of a film lid manufacturing apparatus according to an embodiment of the present invention.

FIG. 12 is a longitudinal sectional view of a finger ring forming apparatus of the film manufacturing apparatus.

FIG. 13 is an enlarged sectional view of a main part thereof.

FIG. 14 is a plan view of a finger ring folding device of the film manufacturing apparatus.

FIG. 15 is a side view of a main part of the folding device of the A station.

FIG. 16 is a side view of a main part of the hot melt coating device.

FIG. 17 is a perspective view of a folding guide.

FIG. 18 is a side view of a main part of the hammer device.

FIG. 19 is a front view of a main part of the temporary bonding apparatus.

FIG. 20 is a schematic plan view showing the arrangement of the bonding device according to the embodiment of the present invention.

FIG. 21 is a schematic front view of a main part thereof.

FIG. 22 is a schematic sectional view of the heating coil body.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 lid 2 shell 3 sliding ring 4 film lid 6 sliding ring bonding section 7 film lid bonding section 12 ring 13 sliding cutting member 14 sliding cutting lid main body section 16 finger hanging ring 25 sliding cutting ring fitting device 30 lifter 31 shell support Table 32 Lifter operation cam 37 Sliding ring chuck device 38 Outer cylinder 39 Middle cylinder 40 Sensor shaft 42 Axis 45 Chuck member 46 Chuck vertical movement cam 50 Chuck expanding cam 52 Middle cylinder operation cam 54 Sensor 55 Sensing piece 56 Slicing ring detection Plate 59 Support stand 60 Sensor shaft actuating cam 70 Film 75 Film lid manufacturing device 80 Upper die shoe 82 Outer upper die 84 Inner upper die 87 Finger ring curl processing device 93 Outer lower die 95 Inner lower die 99 Curl forming groove 1 5 folded device 110 creasing device 113 creasing knives 120 folded guide device 125 hammer 130 temporarily bonded device 140 bonding apparatus 143 heating coil 144 pressing body

Claims (13)

(57) [Claims] 1. A metal shell having a winding curl portion for winding around a container body and a film lid bonding portion, wherein the inside is open and the vicinity including the inner peripheral edge is a sliding ring fitting portion. A ring in which the inner peripheral edge of the ring substantially hangs down and a back side of the ring is a shell fitting portion; and a sliding cutting ring which is formed integrally with a sliding cutting member provided between the inner peripheral edges of the ring; It has a film lid body covering the opening of the cutting ring and a knob protruding from the outer periphery of the film lid body, and is formed of a film material based on an aluminum foil having a thermal adhesive layer on the back surface. Wherein said shell and said cutting ring are integrated by fitting, and said film lid material is removably bonded to said shell by thermal bonding. A lid having a ring. 2. The device according to claim 1, wherein the knob comprises a finger ring.
The lid as described. 3. The lid according to claim 2, wherein the finger ring is folded on the upper surface of the film lid main body. 4. A lid according to claim 1, wherein the sliding ring fitting portion of the shell and the shell fitting portion of the sliding ring are integrally bonded by thermal bonding. 5. A step of manufacturing a shell from a blank, a step of injection-molding a grinding ring separately, a step of fitting the grinding ring to the shell, and a base material made of an aluminum foil having a heat bonding layer on a back surface. A film lid manufacturing step of punching and forming a film lid from a film to be formed, a shell in which the sliding ring is fitted and the film lid are overlapped and thermally bonded, and the shell and the film lid material are releasably bonded. A method for producing a lid having a sliding ring, comprising a bonding step. 6. A finger ring forming step of forming a finger ring by punching an outer peripheral portion of a finger ring and a center circular portion of a finger hole, and forming a curl on an inner peripheral edge and an outer peripheral edge of the finger ring. A finger ring ring curl forming step for processing, a step of folding the curled finger ring on the upper surface forming the film lid body, and a step of punching an outer peripheral edge of the film lid body and separating the film lid from the film. A method for manufacturing a lid according to claim 5. 7. The lid according to claim 6, wherein, in the step of separating the film cover from the film, the film cover is separated from the film and, at the same time, the separated film cover is temporarily bonded to the shell fitted with the sliding ring. Production method. 8. A lifter having a plurality of stations rotating around a main shaft, each of which is vertically driven and whose upper surface is a shell support table, and capable of being vertically driven to face above the lifter. A sliding ring fitting device, wherein a sliding ring chuck device is disposed. 9. The sliding ring chuck device includes an outer cylinder supported movably up and down, and a middle cylinder fitted movably up and down inside the outer cylinder. A pair of expander-type chuck members are swingably attached to a pivot fixed to the lower end, a chuck expanding cam for expanding the chuck member is fixed to the lower end of the middle cylinder, and the middle cylinder descends. 9. The sliding ring fitting device according to claim 8, wherein the chuck member is configured to push and expand the chuck member so that the chuck member engages with the inner peripheral edge of the sliding ring to hold the sliding ring. 10. A sliding ring fitting device according to claim 7, wherein a sensor shaft for detecting whether or not the chuck member holds the sliding ring penetrates inside the middle cylinder. 11. A film feeder for feeding a long film as a film cover material, and a finger ring is formed by punching an outer peripheral portion of a finger ring and a center circle of a finger hole, which are sequentially arranged in the film feeding direction. Finger hanging ring forming device, Finger hanging ring curling device that forms curls on the inner and outer edges of the finger hanging ring, Forming a fold on the base of the finger hanging ring and lifting the tip to incline upward
Creasing apparatus that state, the helical guide surface twisted
Has, Guy I folded to overlap folding the upper surface of the film lid body said finger hook ring from the fold line by the guide surface
And a film lid separating apparatus for punching an outer peripheral edge of the film lid main body and separating the film lid from the film. 12. The film lid according to claim 11, wherein a temporary bonding device is provided below the film lid separating device to temporarily bond the film lid separated from the film to the shell into which the sliding ring is fitted. Manufacturing equipment. 13. A supply turret for supplying a lid in which a film lid is temporarily bonded to a shell, an adhesive head for thermally bonding the temporarily bonded film lid to the shell, and a lid which has been thermally bonded to the shell. The bonding head comprises a heating coil body that holds the lid and performs high-frequency induction heating from below, and a pressing body that presses the lid from above with the heating coil body. A lid bonding device having a sliding ring, wherein the bonding device is arranged.