JPH0358813B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a molded container manufacturing system, and more particularly to a molded container manufacturing system in which containers are manufactured primarily by drawing a laminate film.

[Prior Art] Metal cans are well known as sealed containers for storing food and drinks, but recently,
Molded containers made of a laminated film made of a metal layer and a plastic layer are becoming popular.

Such a molded container 1, as shown in FIG.
It has a body part 2, a bottom 3 is integrally formed at the lower end of the body part 2, and an opening 4 is formed at the upper end of the body part 2, and a flange 5 is provided at the peripheral edge of the upper end. A curled portion 6 is formed on the outer periphery of the flange 5 to reinforce the flange 5.

After the molded container 1 is filled with the contents 7, the lid 8 is closed.
is sealed to the flange 5 and sealed. The sealed molded container 1 is subjected to retort treatment if necessary.

Conventionally, when manufacturing such a molded container 1, first, a first press device is used to mold a primary molded product. This primary molded product has a bottomed body and an irregularly shaped flange around the upper opening of the body. These primary molded products are stacked and temporarily stored. As the next step, the primary molded products are taken out one by one from the aggregate of primary molded products and supplied to the second press device, where the flange is trimmed, curled, and reformed to produce the molded container 1 as the secondary molded product. It is being completed.

[Problems to be Solved by the Invention] However, in this conventional manufacturing method, the primary molded products are stacked and stored between the molding of the primary molded product by the first press device and the processing such as trimming by the second press device. The process from drawing the original fabric to completing the molded container cannot be performed continuously, which not only increases the time required for manufacturing, but also makes it difficult to smoothly supply the primary molded product. There were times when equipment operation was interrupted due to difficulty in

In view of the above, it is an object of the present invention to provide a molded container manufacturing system that can continuously perform processes from processing a primary molded product in a first press device to processing a molded container in a second press device. It is something.

[Means for Solving the Problem] Corresponding to this object, the method for manufacturing a molded container of the present invention includes an unwinding step of unwinding a film-like raw fabric, and then applying a lubricant to the raw fabric. a lubricant application step, a primary forming step of forming a primary molded product of a container having a flange on the peripheral edge of the opening end from the original fabric by drawing, and then It is characterized in that it includes a secondary forming process of trimming, curling, and reforming.

Further, the molded container manufacturing apparatus of the present invention includes an unwinding machine for unwinding a film-like raw fabric, a lubricant application device located on the exit side of the unwinding machine, and an outlet of the lubricant application device. A first press device that punches and draws a primary molded product of a container having a flange on the peripheral edge of the opening end on the side, and a second press device that is located on the exit side of the first press device and processes the primary molded product of the container. The present invention is characterized in that it includes a conveyance device that conveys the product, and the second press device that performs trimming, curling, and reforming of the flange of the primary molded product.

Further, the molded product delivery device of the present invention is capable of advancing and retracting between a press device having a die and a punch facing each other across an original fabric path, a conveyor, and the die and the punch, and is capable of moving forward and backward between the conveyor and the die and punch. a receiver device having a cup receiver on which a molded product can be placed; and an air extrusion device that blows air onto the molded product placed on the cup receiver to push the molded product onto the conveyor. It is characterized by having the following.

Further, the feeding device for a molded container work of the present invention is a transfer device for feeding a molded container work having a flange on the peripheral edge of an open end of a bottomed body portion to a molding press device, and the feeding device is a feeding device for feeding the molded container work to a molding press device. a stopper device for controlling the movement of the molded container work on the conveyor device, and a transfer finger that can come into contact with the molded container work to restrain the movement of the molded container work; The stopper is characterized in that it is configured to move in synchronization with the movement of the transfer finger.

[Function] In the molded container manufacturing system of the present invention, a raw material made of a laminate film is drawn by a first press to form a primary molded product of a molded container,
Next, the primary molded product is subjected to flange trimming, curling, and forming using a second press device.

The primary molded product processed by the first press device is immediately transferred to a conveyor by a molded product delivery device and sent to a transfer device for the second press device.
The cup receiver is the first part of the molded product delivery device.
It moves in and out between the die and punch of the press device to receive the primary molded product, and then blows air to transfer the primary molded product from the cup receiver onto the conveyor. The primary molded product transferred to the conveyor passes through several other stages of conveyors as necessary to reach the transfer device. In the feeding device, a transfer finger grasps the primary molded products one by one and sends them to the second press device, but at a stage before the transfer finger, a stopper that works in conjunction with the transfer finger organizes the retention of the primary molded products. do.

[Example] Hereinafter, details of the present invention will be explained with reference to drawings showing an example.

In FIG. 2, 11 is a molded container manufacturing device, and the manufacturing device 11 includes an unwinder 12, a lubricating oil applicator 13, an accumulator 14, a first press device 15, a winder 16, a delivery device 17, a first press device 15, a winder 16, a delivery device 17, The apparatus includes a first conveyor 18, a second conveyor 19, a supply device 21 for primary molded products, a second press device 22, and a stacker 23.

The unwinding machine 12 unwinds the original fabric 24 wound into a roll. The original film 24 is a laminate film laminated with plastic film or metal foil.

The raw fabric 24 unwound from the unwinding machine 12 is thinly coated with lubricating oil on both sides by a lubricating oil applicator 13, accumulated in an accumulator 14, and then supplied to a first press apparatus 15. The first press device 15 draws and forms the primary molded product 25 of the molded container using a die and a punch. As shown in FIG. 3, the primary molded product 25 formed here has a body 2, a bottom 3 is integrally formed at the lower end of the body 2, and an opening at the upper end. A flange 5a is formed on the periphery of 4. However, the flange 5a is irregularly shaped.

The primary molded product 25 formed by the first press device 15 is delivered to the first conveyor 18 by the delivery device 17, and then transferred to the second conveyor 19. The scraps of the original fabric coming out of the first press device 15 are wound up by a winding machine 16.

Primary molded product 25 sent by second conveyor 18
is supplied to the second press device 22 by a supply device 21. The primary molded product 25 is trimmed, curled, and reformed by the second press device.

As shown in FIG. 4a, the trimming process involves trimming the peripheral edge 26 of the irregularly shaped flange 5a of the primary molded product 25 to form a shaped flange 5.

Curling involves forming a curled portion 27 on the peripheral edge of the flange 5, as shown in FIG. The upper end of 27 is made to coincide with the upper surface of flange 5. In this way, the molded container 1 is completed, and the stacker 2
Transferred to 3.

The delivery device 17 has a receiver device 31 and an air nozzle 32, as shown in FIGS. 5 and 6. The receiver device 31 has a cup receiver 33 on which the primary molded product 25 can be placed. In the embodiment shown in FIGS. 5 and 6, the first press device 15 is equipped with two combinations of dies 34 and punches 35, so two receiver devices 31 and two air nozzles 32 are also displayed correspondingly. has been done.

The cup receiver 33 has a plate shape and is located almost directly above the path of the raw fabric 24.
4 and the punch 35 by a stroke S. However, the direction in which the original fabric 24 is fed and the direction in which the cup receiver 33 moves forward and backward are perpendicular to each other. The base end of the cup receiver 33 is attached to the slide frame 3.
The slide frame 36 is mounted on a slide rail 38 via a bearing 37 and is movable along the slide rail 38 by a stroke S. On the other hand, a drive rod 41 is connected to the slide frame 36, and the slide frame 36 to the cup receiver 33 can be driven by a drive device (not shown). The first conveyor 18 is located on one side of the cup receiver 33, and the air nozzle 32 is located on the opposite side. The operation of the delivery device 17 having such a configuration is as follows.

As shown in FIG.
The punch 35 works sideways to punch out the blank, and the blank is drawn and formed into a primary molded product 25.
form. After the drawing process is completed, the die 34
When the punch 35 is separated from the punch 35, the primary molded product 25 moves up along with the die 34. At this time, the drive rod 41 operates and the cup receiver 33 enters between the die 34 and the punch 35. The knockout stud 42 of the die 34 then protrudes and projects the primary molded product 25 downward, thereby placing the primary molded product 25 on the cup receiver 33.

Then, as shown in FIG.
operates in the opposite direction, and the cup receiver 33
It then moves back toward the conveyor 18. The retreat of the cup receiver 33 stops just before the first conveyor 18, but at this time, the air nozzle 32 operates to blow air onto the primary molded product 25 on the cup receiver 33, pushing out the primary molded product 25. Transfer to the first conveyor 18. As a result, the transfer of the primary molded product 25 from the first press device 15 to the first conveyor 18 is completed.

Next, the supply device 21 will be explained.

The basic components of the supply device 21 are schematically illustrated in FIGS. 9 to 12.

That is, the supply device 21 is connected to the second conveyor 19
and the second press device 22, and includes a stopper device 51 and a transfer finger device 52.

The stopper device 51 provides a first stopper 56, a second stopper 56, and a second stopper 56 corresponding to a first stop position 53, a second stop position 54, and a third stop position 55 on the second conveyor 19.
A stopper 57 and a third stopper 58 are provided. Each stopper is connected to the second conveyor 1
The primary molded product 25 is brought into contact with the primary molded product 25 on the second conveyor 19 and is continuously operated at each stop position. Release and primary molded product 2
5 is allowed to move.

In addition, the first stop position 53 and the second stop position 54
A first sensor 61 and a second sensor 62 are arranged to detect the primary molded product 25, respectively. When there is no primary molded product 25 at the first stop position 53, the second stopper 57 opens and the first stop position 53
3, the second stopper 57 is closed. The primary molded product 2 is placed at the second stop position 54.
5, close the third stopper 58 and close the second stopper 58.
When there is no primary molded product 25 at the stop position 54, the third
Open the stopper 58.

On the other hand, the first stopper 56 is interlocked with the movement of the transfer finger device 52.

The transfer finger device 52 has a transfer finger 63. The distal end of the transfer finger 63 is divided into two to form a finger 64, and the proximal end is fixed to a displacement frame 65. The fingers 64 of the transfer fingers 63 come into contact with the body of the primary molded product 25 to restrain the primary molded product 25, and the movement of the transfer fingers 63 causes the primary molded product 25 to
to an intermediate position 66 and to a forming position 67 by another transfer finger. The molding position 67 is the position of the die and punch of the second press device 22.

As the displacement frame 65 is displaced, the transfer finger 63 is also displaced in a forward movement 68 from the original position A to the feed start position B where the finger 64 restrains the primary molded product 25, and from the feed start position B to the feed end position C. In the feed stroke 71, from the feed end position C to the finger 65, the primary molded product 25
Reverse stroke 7 to retreat to retreat position D to release the restraint of
2, and a return stroke 73 from the retreated position D to the original position A.

The movement of the displacement frame 65 is controlled by the follower 75 by a plate cam 74 fixed to the displacement frame 65.
The movement is converted into an opening/closing operation of the first stopper 56 via the rotating shaft 76 and the bevel gear device 77.

The operation of the supply device 21 configured as described above is as follows.

A large number of primary molded products 25 are crowded together and placed on the second conveyor 19 that is continuously running, and among these, the three primary molded products on the leading edge side are the objects of control. The second stopper 57 and the third stopper 58 open and close based on the signals from the first sensor 61 and the second sensor 62, and the first stop position 53,
One primary molded product 25 is placed at the second stop position 54 and the third stop position 55.

In this state, the displacement frame 65 enters the forward stroke 68. At this time, as shown in FIG. 13, the movement of the displacement frame 65 is transmitted to the first stopper 56 via the plate cam 74, and the first stopper 56 begins to open (from FIG. 13a to FIG. 13b). change of state).

Further, the displacement frame 65 moves forward and the finger 6
4 completely restrains the primary molded product 25, the first stopper 56 is completely opened (FIG. 13c).

Next, when the displacement frame 65 enters the feed stroke 71, the primary molded product 25 is restrained by the fingers 64 and reaches the intermediate position 66. At this time, the other primary molded product 25 that had reached the intermediate position first is sent to another finger 64a and reaches the molding position 67. When the first stop position 53 becomes empty, the first sensor 61 detects this, the second stopper 57 opens, and the next primary molded product is supplied to the first stop position. The displacement frame 65 returns to the original position A through a backward stroke 72 and a return stroke 73.

[Effects of the Invention] In the molded container manufacturing system of the present invention, the molding of the primary molded product, its trimming, curling, and reforming are performed continuously, so there is no need for a process of once accumulating the primary molded product, and Accordingly, the overall time required for manufacturing a molded container is shortened, and the configuration of the apparatus is also simplified, allowing efficient and smooth production.

In particular, by using the delivery device of the present invention, it is possible to stably handle containers made of laminate materials, which are lighter than metal containers and whose positioning is unstable, thereby improving production efficiency.

Furthermore, by using the feeding device of the present invention, the flow of the primary molded product is not disturbed at the entrance of the second press device 22, making it possible to produce laminate containers smoothly and efficiently.

[Brief explanation of drawings]

Fig. 1 is an explanatory cross-sectional diagram showing a molded container, Fig. 2 is an explanatory diagram of the arrangement of equipment showing the manufacturing system of this invention, Fig. 3 is an explanatory cross-sectional diagram of a primary molded product, and Fig. 4 is an explanatory diagram of a cross-section of the primary molded product. 5 is a front view of the delivery device, FIG. 6 is a side view of the delivery device, FIG. 7 is a side view of the delivery device, and FIG. 8 is a side view showing an example of the operation of the delivery device. 9 is an explanatory side view showing another example of the operation of the delivery device, FIG. 9 is an explanatory perspective view of the feeding device, FIG. 10 is an explanatory plan view showing the position of the stopper of the feeding device, and FIG.
FIG. 12 is a front view showing the position of the stopper of the feeding device, FIG. 12 is a plan view showing the finger of the feeding device, and FIG. 13 is a plan view showing the movement of the finger of the feeding device. 1... Molded container, 2... Body, 3... Bottom, 4... Opening,
5...flange, 6...curl part, 7...contents, 8...
Lid, 11... Manufacturing device, 12... Unwinding machine, 13... Lubricating oil application device, 14... Accumulator, 15... First press device, 16... Winding machine, 17... Delivery device, 18... First conveyor, 19... Second conveyor, 21... Supply device, 22... Second press device, 23... Stacker, 24... Original fabric, 25... Primary molded product, 26... Peripheral part, 27... Curl part, 31...
Receiver device, 32...Air nozzle, 33...Cup receiver, 34...Dice, 35...Punch,
36...Slide frame, 37...Bearing, 3
8...Slide rail, 41...Drive rod, 42...
Knockout stud, 51... stopper device,
52...Transfer finger device, 53...First stop position, 54...Second stop position, 55...Third stop position, 56...First stopper, 57...Second stopper, 58...Third stopper, 61...First stopper Sensor, 62... Second sensor, 63... Transfer finger, 64... Displacement frame, 65... Finger, 66... Intermediate position, 67... Molding position, 68
...forward stroke, 71...feeding stroke, 72...backward stroke,
73... Return stroke, 74... Plate cam, 75... Follower, 76... Rotating shaft, 77... Bevel gear device.

Claims (1)

[Claims] 1. An unwinding step of unwinding a film-like raw fabric;
Next, a lubricant application step of applying a lubricant to the original fabric, and a primary forming process of forming a primary molded product of a container having a flange at the peripheral edge of the opening end from the original fabric by drawing forming. , and then a secondary molding step of trimming, curling, and reforming the flange of the primary molded product. 2. An unwinding machine that unwinds a film-like raw fabric, a lubricant applicator located on the exit side of the unwinder, and a lubricant applicator located on the exit side of the lubricant applicator at the peripheral edge of the opening end. A first press device that punches and draws a primary molded product of a container having a flange;
A molded container manufacturing apparatus comprising: a conveying device for conveying to a press device; and the second press device for trimming, curling, and reforming the flange of the primary molded product. 3. A press device having a die and a punch facing each other across a raw material path, a conveyor, and a cup that can move forward and backward between the die and the punch and can place a molded product formed by the press device. Delivery of molded products characterized by having a receiver device having a receiver, and an air extrusion device that blows air to the molded product placed on the cup receiver to push the molded product onto the conveyor. Device. 4 A transfer device for feeding a molded container workpiece having a flange on the peripheral edge of the open end of a bottomed body portion to a molding press device, the conveyor device feeding the molded container workpiece, and the molding device on the conveyor device. A stopper device for controlling the movement of the container work; and a transfer finger capable of coming into contact with the molded container work to restrain the movement of the molded container work, the stopper being synchronous with the movement of the molded container work. A feeding device for a molded container workpiece, characterized in that it is configured to operate.