Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D51/00—Making hollow objects
  • B21D51/16—Making hollow objects characterised by the use of the objects
  • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures

Definitions

• the bases of various metal containers are combined with the top plate of the metal container.
• the tapered expansion member is moved axially by hydraulic pressure or air.
• the base of a conventional metal container is separate from the top of the container.
• the leakage prevention effect is great, but it is extremely troublesome, so
• An object of the present invention is to provide a method and an apparatus for determining the drawbacks of the conventional base as described above.
• the rotating die that is opened and closed on the circular side of the mouthpiece 3 ⁇ 4 is fitted in a reduced state. Opening and closing
• the outer mold of its own is expanded and placed on the outside of the base, then the outer mold is made smaller and the inner mold is rotated while expanding the inner view.
• Fig. 1 is a front view of the device that implements this method
• Fig. 2 is a side view of the same
• Fig. 3 is a partially enlarged view.
• Fig. 4 and Fig. 5 are enlarged vertical sectional front views showing the operation of the main parts
• Fig. 6 is a partial vertical front view of the top plate before processing the base
• Fig. 7 is processing of the base It is a partial vertical front view of the rear top plate.
• 1 and 2 are a front view and a side view of an apparatus for carrying out the method of the present invention, wherein 1 is a main body thereof, and an upper end of a rising portion 2 at a rear portion of the main body 1. From the front
• Room 3 Room 3 is provided.
• the base provided on a part of 4 is tapered with a projection for fitting, and the R part has an opening 6 as shown in Fig. 3.
• a rotary piston rod 9 is inserted into the cylinder 7, and
• this rod 9 is moved in ⁇ 2.
• the lower part of the arm 3 is under pressure or air.
• the lower end of the rod '9 fixes the upper end of the cylinder ⁇ 14.
• the lower end of the cylinder 14 is opened as shown in FIGS. 4 and 5, and the lower end has an Multiple mouths
• this cylinder 14 yen is provided with a type A.
• This inner die A is provided with a plurality of split grooves 16 extending from the lower end of the cylindrical body of the papar to the vicinity of the upper end as shown in Figs. 4 and 5.
• the pieces 17 between the split grooves can be opened and closed, and a plurality of semi-circular crying parts 18 are formed on the outside of the lower end of each piece 1
• Reference numeral 19 denotes a hydraulic or air type cylinder provided on one circle of the main body, which is coaxial with the cylindrical body 14. This cylinder
• reference numeral 22 denotes a piston set in the cylinder 21, and a bushing projecting above the cylinder 19.
• 26 is the lock 2 3
• This rotating body has ball bearings.
• the pieces 30 are cylindrically arranged with a slight gap between them.
• each of the pieces 3 1 is formed into a cylindrical shape with a suitable interval.
• the outer mold ⁇ is arranged and seismically formed.
• CM? I ⁇ Provide a semicircular local groove 32 corresponding to the projection 18 of the circular type A.
• the upper outer station of each of the above-mentioned collect pieces 30 is a tenon with a small diameter at the top.
• An outer peripheral surface 3 3 is formed on the upper end F5 station of the cylinder 21, and a taper inner peripheral surface 3 4 4 which is in contact with the outer peripheral surface 3 3 is formed.
• a spring 35 is provided between the inner station of the damper 21 and the group of collective pieces 30 to press the group of collective pieces 30.
• reference numeral 36 denotes a plurality of limit switches which are mounted in the cradle 4 at appropriate intervals, and only the operation piece 37 of the limit switch protrudes above the cradle 4. I am making it.
• the limit switch 36 is used for operating the cylinder 10.
• Fig. 6 shows a top plate formed in the first press process
• An L-shaped perimeter 39 is provided in the surrounding area, a base 40 is formed in a cylindrical shape, and the perimeter is formed as a ring-shaped recess 41.
• the ceiling 38 has a circular container, a disk shape, a square shape, a rectangular shape, and a square shape, and the size varies according to the capacity of the container. It is possible to intersect objects of various sizes with circles or corners, but they are shown as circles in the figure ⁇ ].
• An apparatus for carrying out the molding method of the present invention has the above-described configuration. Hereinafter, a method for forming a base portion on a top plate using this apparatus will be described.
• the upper expanding member 28 is inserted into the lower part ⁇ of the R diameter A to expand each piece 17, and as shown in Fig. 5, the rotating body 29 becomes the circle of each piece 17 as shown in the figure. Hold it in a state where it is tilled with the R type A in contact with the side.
• the cylinder 19 After maintaining this state for a certain period of time and forming the base 40, the cylinder 19 first works by the action of a solenoid valve by a timer, etc., and the expanding member is opened.
• the solenoid valve When the FS type A is reduced by lowering the rotating body 29 and the rotating body 29, the solenoid valve is actuated by a limit switch, etc., and the cylinder
• the pressure fluid in 21 is discharged from the outlet 25, the piston 22 descends by the spring 35, and the outer die B also expands and descends.
• the cylinder 7'10 is activated sequentially by the action of the relay and solenoid valve, and the inner die A and the cylinder 14 are raised. Finally, the top plate holding frame 12 and the leaf spring 1 3 Then, remove the top plate 38 from the receiving 4 and turn it over to complete the shaping work, and turn it over. It has two lower forces s'
• the base plate 38 and the base 40 are integrated, and the periphery 39 is fixed to the upper edge of the body 43 of the container to complete the container.
• the conventional clamp cap can be attached to the base 40 molded in this way.
• a part of the top plate is opened as a base portion by the presser 2 and the cylindrical plate is opened.
• the base portion is formed at the time of press forming the top plate, and then the bent portion having an arc shape is formed at the base portion, thereby forming the top plate and the base plate. Since the joining process of the base can be omitted, there is an advantage that the work is remarkably simple. Also, in the device of the present invention, the circular mold is expanded while rotating, and is held by the outer mold.Because it is formed by crimping to the die base, Accurate molding can be performed quickly, and the outer die opens and descends after molding, and the inner die rises slightly after molding. This has the effect of making it easy to remove the top plate after molding.
• the metal container cap forming method and apparatus according to the present invention can be used to form caps on various metal containers such as stone cans and food cans. It is useful to form a base that completely prevents the leakage of

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shaping Metal By Deep-Drawing, Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=14108451

Family Applications (1)

Country Status (3)

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Citations (3)

• 1981
  • 1981-06-15 JP JP9437181A patent/JPS57206536A/ja active Granted
• 1982
  • 1982-05-14 WO PCT/JP1982/000170 patent/WO1982004410A1/ja not_active Ceased
  • 1982-05-14 AU AU83964/82A patent/AU8396482A/en not_active Abandoned

Patent Citations (3)

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