JPS6015523B2 - A device that seals the mouth of a container with a film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for punching out a lid from a strip-shaped film and sealing it to the mouth of a container.

Problems to be Solved by the Invention As films for lidding materials, laminate films based on very thin aluminum foil or paper, polyethylene films, etc. are known.

These films have the advantage of being inexpensive and easy to print. On the other hand, the same film has problems such as warping of the punched lid material due to curling of the film, and difficulty in handling the lid material because it is thin and not self-supporting. ing. An object of the present invention is to provide a device that can reliably seal the mouth of a container using the film described above.

Means for Solving the Problems The device for sealing the mouth of a container with a film according to the present invention has a container holder that receives the container with the brim of the mouth edge of the container, and the L container holder is configured to stop at a predetermined sealing position. A container horizontal transport device is driven intermittently, and a lid material punching device is placed above the container holder stopped at the sealing position and punches out the lid material from a strip of film that is intermittently fed forward. A lid suction cup made of a heat insulating material that is flat and has a suction surface formed to a size larger than the container rim; A rotating body that is driven to rotate intermittently about a horizontal axis so that the material suction cup can stop at a position where its suction surface faces the lid material punching device and the container holder stopped at the sealing position, respectively; and a lid material. A heating coil for heat sealing is buried in the suction cup so as to expose a required portion on the suction surface thereof, and is formed in such a shape on the edge of the container, and is disposed below the container holder stopped at the sealing position, and It consists of a lifter that lifts the container from the container holder so that the container held by the container holder presses its mouth against the suction surface via the lid.

When a lid material is punched out from the working lid material film, the lid material is received by the lid material suction cup facing upward.

At this time, the rhombus is held flat and stretched because its entire surface is sucked by the suction cup. Then, when the lid suction cup rotates with the rotating body and faces downward,
The container is lifted and the mouth of the container is pressed against the suction cup via the lid. Since a heat-sealing heating coil is buried in the area where the mouth is pressed, the heating coil is heated to heat-seal the lid to the container mouth. At this time of heat sealing, the entire surface of the cover is suctioned by the suction member and remains in the above-mentioned flat and stretched state. Example A device for sealing the mouth of a container with a film has a container holder 5 that receives a container C by the brim of its mouth, and is driven intermittently so that the container holder 5 can stop at a predetermined sealing position. A container horizontal transfer device 3, a lid material punching device 7 that punches out a diamond material B from a band-shaped film F that is arranged above the container holder 5 stopped at the sealing position and that is intermittently fed forward; Lid suction cups 47, 48 made of heat insulating material and having suction surfaces formed to have a size larger than the container mouth edge, and lid suction cups 47, 48.
is mounted with its suction surface facing outward, and the lid material suction cups 47 and 48 can be stopped in positions where their suction surfaces face the rhombus punching device 7 and the container holder 5 stopped at the sealing position, respectively. A rotating body 18 that is driven to rotate intermittently about a horizontal axis, and a lid material suction cup 47, 48 that is embedded in the suction surface of the rotary body 18 so as to expose a required portion thereof, and is formed in such a shape on the container opening twill portion. The heating coils 49 and 50 for heat sealing and the container C, which is placed below the container holder 5 stopped at the sealing position and held by the same container holder 5, press its opening against the suction surface via the lid B. A lifter 6 lifts the container C from the container holder 5 so as to attach the container C.
A device that seals the mouth of a container with a film.

The container holder 5 is formed into a cylindrical shape large enough to loosely fit the chest of the cup-shaped container C, and receives the brim of the container opening at its upper end. The intermittent horizontal container transfer device 3 is a horizontal rotary plate whose center of rotation is a vertical axis (not shown), and a number of container holders 5 are fitted on the outer circumference at predetermined intervals so as to penetrate through the lower end thereof. The holes shown are listed. An apparatus frame 1 is provided on the bed 2 so as to be located to the left of the container intermittent horizontal transfer apparatus 3. The device frame 1 is a hollow box-like object with an inverted L-shaped longitudinal section, and its upper protrusion IA is connected to the container intermittent horizontal transfer device 3.
It is overhanging above. A substantially large portion of the bottom wall 66 of the upper protrusion IA is closed. . Also, the upward protrusion IA
A pair of left and right vertical cylindrical sliding guide portions 12 are integrally provided inside. Guide rollers 30 and 31 are arranged on both left and right sides of the upper end of the device frame 1, and pinch rollers 32 to 35 are arranged on both left and right sides at the same height as the lid material punching device 7, respectively.

As shown by arrow A in the figure, both guide rollers 30, 31
After passing between the right pinch and rollers 32 and 35, the film F guided by the rollers 32 and 35 is guided to the left, and is supplied to the lid material punching device 7, where the lid strip B is punched out. Lid material B
The punched film FI is attached to the left pinch roller 33.
, 34 and is sent diagonally downward to the left. The lid material punching device 7 includes a punch 8 and a die 6.

The punch 8 is formed into a short cylindrical shape having a flange 8A on the outer peripheral surface of the upper end, and is fixed to the center of the lower surface of the horizontal plate-shaped slide 9 at the flange 8A. On the other hand, the die 6 is fixed to the lower surface of the bottom wall 66 of the upper protrusion IA.
An annular film presser 11 is slidably fitted onto the outer peripheral surface of the punch 8, and a disc-shaped lid presser 14 is slidably fitted onto the inner peripheral surface of the punch 8. The film presser 11 is supported by a compression coil spring, and its lower surface is normally flush with the lower surface of the punch 8. There is a through hole 9 in the part of the slide 9 where the punch 8 is fixed.
A is listed. The lower ends of a pair of vertical guide rods 13 are fixed to the left and right sides of the slide 9 across the through hole 9A, and an inverted bottomed cylindrical body 15 is attached to the upper surface of the peripheral edge of the slide 9 so as to close the through hole 9A. is installed. The upper halves of both vertical guide rods 13 are fitted into the sliding guide portions 12, respectively. A fluid pressure cylinder 6 is fitted into the bottomed cylindrical body 15 in a downwardly fixed manner. The rod 17 is connected to the lid material pusher 14. A substantially L-shaped slide operating lever 20 is provided on the left side of the bottomed cylindrical body 15. The lever 20 is fixed to a horizontal rotating shaft 19 extending in the front-rear direction inside the device frame 1, and has a rightward projecting arm 20A and an upwardly projecting arm 20B. The lower end of the connecting rod 18 is attached to the tip of the right protruding arm 20A via a horizontal pin 21. The upper end of the connecting rod 18 is connected to the outer peripheral surface of the bottomed cylindrical body 15 via another horizontal pin 18A. On the other hand, a horizontal pin 25 is attached to the tip of the upwardly protruding arm 20B.
An outer ring 24 is connected. The eccentric outer ring 24 is connected to the horizontal main shaft 2
It surrounds an eccentric inner ring 23 fixed to the eccentric portion 22A of No. 2. A driven head gear 26 is fixed to the horizontal main shaft 22. A driven head gear 28 fixed to the upper end of the vertical drive shaft 27 is meshed with the driven head gear 26 . Vertical drive shaft 2
7 extends into the inside of the device frame 1 from below,
It is supported by a bearing 29 near the upper end. When the drive shaft 27 is actuated, the driven and drive gear 2
6 and 28, the main shaft 22 rotates, and together with this, the eccentric inner ring 23 rotates, and the eccentric outer ring 24 reciprocates.

As a result, the lever 20 swings, and the punch 8 moves up and down together with the slide 9 via the connecting rod 18 and the bottomed cylinder 15. On the other hand, when the fluid pressure cylinder 16 is actuated to cause the rod 17 to protrude, the lid material pusher 14 causes its lower part to protrude from the lower surface of the punch 8. The rotating body 36 consists of a horizontal rotating shaft 41 that extends in the left-right direction and is supported at both ends by bearings 39 and 40, and a cylindrical body 46 fitted over the outer peripheral surface of the horizontal rotating shaft 41.

An output shaft 38 of a rotary actuator 37 attached to the right side wall IC of the device frame 1 facing right is connected to the left end of the horizontal rotation shaft 41 . At the center of the horizontal rotation shaft 41, there is a hole with a bottom pointing leftward from the right end, and at the center of its length, there are two holes pointing outward from the bottom hole.
Two through holes 59 and 60 are arranged symmetrically with respect to the center of the ball. On the other hand, the cylindrical body 46 has both through holes 59, 6, and two lotus through holes 44, 45 of the same diameter, and the same diameter through holes 44, 45 are provided at the open ends of the same through holes 59, 6, which are large in diameter and contain a container. Two recesses 42 formed slightly larger than the outer diameter of the mouth.
, 43 are formed respectively. Lid material suction cup 47, 4
8 is formed into a disk shape that is fitted into the recesses 42 and 43 without any gaps.

As the heat insulating material that forms this, for example, asbestos can be mentioned. The bottomed hole of the horizontal rotating shaft 41 and the bottomed hole 59,
60, the tips of suction tubes 57, 58 extending through the lotus holes 44, 45 of the cylinder 46 are connected. Further, container mouth guide rings 53 and 54 are attached to the outer peripheral surface of the cylinder body 46 so as to surround the suction surfaces of the lid material suction cups 47 and 48. The inner circumferential surface of the ring 63 is formed to have the same diameter as the suction surface at its bottom, and the diameter gradually increases from the bottom toward the closed portion. Heating coil 49,5
0 is a heating wire such as a nichrome wire, to which electric wires 55 and 56 extending from the outside of the rotating body 36 are connected in the same way as the suction tubes 57 and 58. The lifter 64 has a vertical rod-shaped leg 65 that is coaxial with the center line CL of the container holder 5.

The leg portion 65 is connected to an elevating tube 62 connected to the upper end of the elevating rod 61.
It is slidably fitted in and biased upward by a compression coil spring 63. Now, it is assumed that the container holder 5 has stopped at a predetermined position, and around this time, the rotating body 36 has stopped with the lid material suction cups 47 and 48 in the upward and downward positions.

In this state, the container C with its mouth open is held in the container holder 5, the lid material suction cup 48 in the downward position has already sucked the punched lid material B, and the rhombus suction member in the upward position has been suctioned. The diamond material B is not adsorbed on the board 47. punch 8
When the film F is lowered, the lid material B is punched out from the film F.

At this time, the peripheral edge of the diamond material B to be punched out is pressed against the upper surface of the die 6 by the film presser 11. When the punch 8 is lowered and the fluid pressure cylinder 16 is activated at the same time, the fluid pressure cylinder 16 is activated and the lid material is pushed 1.
4 is lowered relative to the punch 8, the punched lid material B is pushed 14 by the punch 8 and the Gui 6.
The lid material is pushed out by the lid material and is sucked by an upward-facing lid suction cup 47 waiting below. While the lid strip B is punched out from the film F, on the other hand, by raising the lifter 64, the container C is lifted from the container holder 5, and its opening is pushed through the heating coil 5 through the lid material B. wear. In this state, when the heating coil 50 is energized for a required period of time, the lid member B is heat-sealed to the mouth of the container C. Then, the lifter 64 is lowered, the rotary actuator 37 is activated, the rotating body 36 is rotated 180 degrees, and the container holder 5 is moved by one pitch, thereby completing one cycle of work. According to the invention, the lid material is punched out from the lid material film, and the entire surface of the lid material is sucked and held in a flat and stretched state before being heat-sealed to the container opening. Even if the punched lid material is warped due to curling of the film or is thin and not self-supporting, the same film can be used to reliably seal the mouth of the container. I can do it.

[Brief explanation of the drawing]

The drawing is a vertical longitudinal sectional view showing an embodiment of the invention. 3...Container intermittent horizontal transfer device, 5...Container holder, 7...Lid material punching device, 36...Rotating body, 47, 48...Lid material suction cup , 49, 50...
...Heating coil, 64... Lifter, C... Container, B
...Lid material.

Claims (1)

[Claims] 1. A container horizontal transfer device 3 which has a container holder 5 that receives the container C with the brim of its mouth edge and is driven intermittently so that the container holder 5 can stop at a predetermined sealing position; A lid material punching device 7 punches a lid material B from a band-shaped film F which is disposed above the container holder 5 and is intermittently fed forward; Lid suction cups 47, 48 made of heat insulating material and having suction surfaces formed therein; lid suction cups 47, 48
is mounted with its suction surface facing outward, and the lid material suction cups 47 and 48 can be stopped at positions where their suction surfaces face respectively the lid material punching device 7 and the container holder 5 stopped at the sealing position. A rotating body 18 that is driven to rotate intermittently about a horizontal axis, and a lid material suction cup 47, 48 that is embedded in the suction surface of the rotary body 18 so as to expose a required portion thereof, and is formed in such a shape on the rim of the container. The heating coils 49 and 50 for heat sealing are arranged below the container holder 5 that is stopped at the sealing position, and the container C held by the container holder 5 has its mouth portion attached to the suction surface via the lid member B. A lifter 6 that lifts the container C from the container holder 5 in a pressing manner.
4. A device for sealing the mouth of a container with a film.