JPH08257661A - Method and device for manufacturing plug of container such as drum - Google Patents

Abstract

PURPOSE: To improve the yield of the sheet by feeding a disk material one by one to a carrying feeder for machining, after the disk material is fed to a disk magazine to recycle the waste material. CONSTITUTION: A disk material to be carried by a gage 1 is charged into a hopper 2. A storage case 3 of the disk material is provided to the lower part of the hopper 2, a one piece feeding feeder is extended diagonally and upwardly, the disk material is carried upwardly one by one by the feeder, and successively stacked from the top in a disk magazine 5 by a conveyor 4. The disk material fed from the disk magazine by a movable piece 6 is stored one by one in a positioning part of a carrying feeder 7, and successively carried to a drawing part 8, a re-strike part 9, and a circumference trimming part 10, etc., to complete a partially fabricated product of a plug before the thread rolling. The arrangement of the disk material and the feeding synchronized with the operation of a machining part can be controlled simultaneously to obtain the labor saving and high productivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for efficiently manufacturing a stopper for sealing a mouth of a container such as a drum can, and a manufacturing apparatus used for the method.

[0002]

2. Description of the Related Art A stopper for sealing a mouth of a container represented by a drum can has been conventionally manufactured. The manufacturing method is as follows: uncoiling the coiled hoop material (steel strip), straightening it into a flat plate with a leveler, step-pressing with a progressive die, and rolling the screw with a die die. Was there.

[0003]

As described above, in the conventional structure, the semifinished product of the stopper can be manufactured simply by conveying the hoop material to the progressive die. However, since a dedicated hoop material for manufacturing the stopper is used as a raw material, the portion other than the cut-out portion is a waste material. Therefore, there is a problem that the yield is very bad.

By the way, the stopper produced in the present invention is to be screwed into a flange which is caulked to the top plate of a drum can. The top plate and the base plate are circular plates having a diameter of about 610 mm,
As an example, a hoop material having a width of about 1230 mm is punched in series or in a staggered pattern as shown in FIG. And the remaining punched-out pieces were still disposed of as waste materials. However, in order to manufacture drum cans, a large amount of waste material is generated from the top plate / base plate material, and further waste material is generated from the hoop material for stoppers, so the poor yield is amplified, and at least in drum-related products. Also has the problem of reducing resource efficiency.

The present inventor has focused on the above-mentioned conventional problems, and is a novel method for producing a semifinished product of a stopper by effectively utilizing a waste material produced during the production of a top plate or a base plate of a container such as a drum can. The present invention has been completed for the purpose of providing a manufacturing apparatus used for the above.

[0006]

In the present invention, in order to achieve the above object, a disc material for a stopper of a container such as a drum can is punched from a waste material portion generated in a step of punching a top plate or a base plate of a drum can. Then, after feeding these disc materials to a disc magazine, the disc materials are sent one by one to a feeding feeder, and the disc materials accommodated in the feeding feeder are sequentially drawn by a progressive press, re-strike, The problem is solved by adopting a new means of performing processing such as trimming. The stamping of the disc material may be the same as the stamping process of the top plate and the base plate, or may be a separate process.

Further, in order to achieve the above method, a disk magazine having an inner diameter corresponding to the diameter of the disk material for stacking the disk materials, and the plurality of disks stacked in the disk magazine. A movable piece that takes out and feeds the material one by one from the lower side, a conveyor feeder that moves intermittently in synchronization with the operation cycle of the movable piece, and has a positioning portion for the disc material, and one time of this conveyor feeder. We manufacture semi-finished products of stoppers, that is, stoppers just before screw rolling, by adopting devices such as processing parts such as drawing part, restrike part, and trimming part provided at intervals corresponding to movement. There is.

[0008]

According to the means of the present invention, the disk material for the stopper is punched from the punching waste material of the top plate or the bottom plate of the drum can, whereby the use of the hoop material dedicated to the plug processing can be omitted. Also, the use of an independent disc material has the effect of omitting the step of plug processing.

In the manufacturing apparatus, the disc magazine has one
The disc material transferred one by one is aligned, and once stored, it is sent out to a subsequent processing unit at a fixed timing, and the moving piece performs the operation of sending out at a fixed timing. The transport feeder has the function of intermittently moving the disc material, and has the function of reliably positioning the processing material at the timing and the interval of one-time movement.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a process diagram showing the method of the present invention. In the process, first, the hoop material for the top plate / base plate of the drum can is straightened by a known means to form a flat plate. Conventionally, only the top plate and the ground plate are punched in a staggered manner from this flat plate.
The rest is a waste material, but in the present invention, a disc material is further punched from the remainder as a plug material. Since one pair of large and small plugs are required for each drum, large and small disc materials to be punched are also manufactured. Although the punching point and quantity of the disc material are free, it is necessary to take care so that the disc material is not distorted because they are too close. Although the punching of the top plate / base plate was performed in a zigzag manner, it goes without saying that another pattern may be adopted to improve the yield, and the present invention is not limited to this pattern. For example, it is also free to punch the top plate and the ground plate in the series direction.

The disc material produced in this manner is conveyed in appropriate amounts and pressed by a molding machine to complete a semi-finished product of the stopper.

As for the punching of the plug material, as shown in the plan view of the hoop material in FIG. 2, it is taken from a conventional waste material portion obtained by punching out the top plate a of the drum can. That is, the portions c and d punched out from the waste material b are used as disc materials of two sizes. Although only the top plate has been described in the drawings, it goes without saying that the base plate f is similarly punched.

FIG. 4 shows a preferred embodiment for accomplishing the steps after the disc material is conveyed among the above steps.
Reference numeral 1 is a cage for transporting a large number of disc materials manufactured by punching, and the disc material transported by the cage 1 is put into a hopper 2. A disc material storage case 3 is provided below the hopper 2, and a one-sheet feeding feeder extends obliquely upward from the storage case 3 and the disc material is transferred upward one by one by a feeder. The disc magazines 5 are stacked in order from the top by the conveyor 4. The disc magazine 5 has a cylindrical shape whose upper and lower sides are opened, and the disc materials are stacked from the upper opening 5a and fed one by one from the lower opening 5b. As a structure for feeding the discs one by one from the disc magazine 5, a movable piece 6 that moves by a constant stroke in the feeding direction is adopted. The disc material sent from the disc magazine 5 by the movable piece 6 is accommodated one by one in the positioning portion of the transport feeder 7, and is sequentially pressed to be formed into a plug shape. That is, the semi-finished plug product before thread rolling is completed by sequentially sending it to the drawing section 8, the restrike section 9, the surrounding trimming section 10, and the like. The operation cycle of the movable piece 6,
It is necessary to match the cycle of intermittent movement of the transport feeder 7. In addition, the distance of one movement of the transport feeder 7 is set to a distance corresponding to the uniform intervals of the devices such as the drawing unit 8, the wrist-like unit 9 and the trimming unit 10 that control each step of the progressive press.

As shown in FIG. 2, the disc material is c,
Although there are two sizes of d, in the apparatus of FIG. 4, it is necessary to appropriately change the diameter of the disk magazine 5 and the diameter of the tray for positioning the transport feeder 7 according to the size of the disk material. Needless to say.

By the way, as shown in FIG. 3, after punching the top plate a from the hoop material, two large and small holes for attaching the cap are punched out simultaneously from the top plate a.
Like disc materials c and d punched out from the waste material portion, they can be reused as small stopper materials. That is, it goes without saying that using the waste material e in this portion is also included in the scope of the present invention.

[0016]

According to the present invention, first, as a method, a plurality of disc materials for stoppers are punched out from arbitrary positions of waste materials generated in the punching process of the top plate / base plate of a container such as a drum can, and these disc materials are circularly cut. After feeding to the plate magazine, it was sent one by one to the feeding feeder for processing, so there is no need for a new hoop material dedicated to the stopper, and the part that was conventionally treated as waste material can be reused. I was able to. Therefore, the material cost can be suppressed. In addition, the yield of plate material has been dramatically improved. By the way, compared with the conventional method of processing the stopper from the special hoop material, it is about 60
It has become possible to achieve a yield improvement of as much as%, and a material weight reduction of approximately 40%. This will eliminate the waste of resources.

Next, in the apparatus of the present invention, the disc material is once stored in the disc magazine and then fed out at a fixed timing. Therefore, the disc material is fed out in line with the alignment of the disc material and the operation of the processing section. Can be controlled at a time, and labor saving and high productivity can be achieved.

[Brief description of drawings]

FIG. 1 is a process chart showing the process of the present invention,

FIG. 2 is a plan view showing a top plate / base plate of a drum can and a hoop material for punching a disc material for a stopper according to the present invention;

FIG. 3 is a plan view showing the base mounting holes of the top plate;

FIG. 4 is a diagram showing the device of the present invention;

FIG. 5 is a plan view showing a conventional hoop material for punching a top plate / base plate.

[Explanation of symbols]

 1 Cage 2 Hopper 3 Storage Case 4 Conveyor 5 Disc Magazine 5a Upper Opening 5b Lower Opening 6 Movable Piece 7 Transport Feeder 8 Drawing Section 9 Rest Like Section 10 Trimming Section

Claims (2)

[Claims] 1. A disc material for a stopper of a container such as a drum can is punched from a waste material portion generated in a step of punching a top plate or a ground plate of a drum can, and the disc materials are fed to a disc magazine and then conveyed one by one. A method for manufacturing a stopper of a container such as a drum can, which is characterized in that it is sent to a feeder, and the disk material contained in the feeder is subjected to processing such as sequential drawing processing, restrike, and trimming by a progressive press. . 2. A disc magazine having an inner diameter commensurate with the diameter of the disc material, for stacking disc materials for stoppers of containers such as drum cans punched from waste materials produced in a punching process of a top plate or a bottom plate of a drum can. , A plurality of disc materials stacked in the disc magazine are taken out one by one from the lower side and sent out, and the disc pieces are intermittently moved in synchronism with the operation cycle of the movable pieces. A drum can or the like characterized by comprising a carrying feeder having a positioning part, and processing parts such as a drawing part, a wrist-like part, and a trimming part, which are provided at equal intervals corresponding to one movement of the carrying feeder. Equipment for manufacturing container stoppers.