JPS59163042A - Rotary expander - Google Patents

Abstract

PURPOSE:To operate surely a rotary expander and to increase a forming speed by constituting a can body holding part of a small-sized supporting base having the diameter equal to roughly about the radius of a can body and a magnet holding the side part of the can body. CONSTITUTION:A can body carried into a pocket of a rotary expander is placed roughly at its half part on a supporting base 8 and is attracted by a magnet 24. Said can body is transferred to a rotary expander and is held and transferred by the rotation of a disc. An elevating rod 11 ascends and the empty can on the base 8 ascends as well, then segmental dies 16 are inserted into the can body. A circular conical part 26 presses a roller 25 by engaging therewith to retreat a slide plate by as much as the expanded diameter of the can body. An expanding shaft 18 is rolled down and the dies 16 expand forcibly and forms the can body. The shaft 18 ascends and the molds 16 shrink. The can body descends together with the base 8, then the dies 16 are removed from the inside of the can body. The magnet 24 is thereafter detached from the can body and loses the holding force. The can body rides on a discharging star wheel and is discharged and transferred by a discharging conveyor.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary expander for enlarging the central portion of a can body such as a barrel-shaped can.

To make beer cans, insert a split mold for mining areas inside a cylindrical, common can, and push the mold open from the inside to increase the volume of the can body in the center of the can. Form into shape.

Recently, with the increase in demand for 0 type 0 cans, there has been a demand for higher speed molding D-loe. This invention provides a pocket for holding the can body on the periphery of the rotary disk, and supplies and discharges the can body to the rotary expander body, which holds the can body and finishes forming while it goes around the rotary expander body. This is an attempt to obtain a υ rotary expander as a series of systems including the limit.

A detailed explanation will be given below with reference to the drawings.

FIG. 1 is a thousand-sided view showing the overall arrangement of the rotary expander of the present invention, in which the rotary-expander main body A1, the star wheel for feeding the can bodies, and the star wheel B1 meet the can body transfer speed and interval of 1741. After processing the speed regulating conveyor C5 to adjust the speed ■ Star wheel D for can body O discharge,
This has been changed from discharge conveyor E.

The speed regulating conveyor C accelerates the can bodies, which have been transferred relatively close together on the low speed conveyor, by matching the speed and interval of the pockets of the star wheel B, which rotates at high speed, to regulate the interval. A high-speed conveyor 2 is provided connected to the low-speed conveyor 1, and along the heavy-speed conveyor 2, a rotation guide 3 is provided with a spiral groove 4 having the same pitch as the star wheel B7) pocket 6 interval. 4 A fixed guide 5 rotates in synchronization with the star wheel B so as to hold the can body between the pocket 6 and the can body.

Star wheel B has speed regulating conveyor C in its pocket 6.
Receive the can body from the rotary expander A and pass the can body to the can body holder.Normally, the holder is used to hold the can body on top of each ridge on which molding is performed. It is necessary to hold the can body with the support base supporting almost the whole surface of the lower end of the can body.
Fukyoku is large enough to hold. Then, the can body slides on the upper surface of the support base and is pushed into the F3Ir foot position.

However, as shown in Figure 2, welded cans often have a small protrusion P on the end of the can body at the welded part S, which impedes smooth fingering on the support and causes poor localization. There is a risk that it may cause

For this reason, in this invention, the support base 8 of the rotary extractor body is designed to have a long can body, a half-inch length, and a shallow length, thereby shortening the sliding distance. At the same time, the can body is made up of 1 with the support part and star wheel pocket 6.
Oriented in the shadows.

Then, I decided to transfer it to a support stand.

Rotary expander main body AV) The can body holding part consists of a support stand 8 and a magnet holder 9, and a star wheel B.
The can body transferred by the pocket 6 is placed on the support stand 8 and at the same time is suction-held by the magnetic holder 9.

As shown in FIG. 4, it has an elevating rod 11 slidably held on the lower disk 1o, and is moved up and down by an elevating cam 12.

The upper disk 13 is provided with an expansion band 4 for this hole and M, and is energized toward the center by a tin ring 15, as shown in an enlarged sectional view in FIG. Tawarishi type 16 and so υ center? 113 pressure plunger 17
The oil field plunger 17 is provided with an expand shaft I8 having a taper that is lowered and raised by the expander body AV) 11.
It is operated by oil pumped through a pipe 19 disposed in the rotating shaft, and its opening is performed by a line switching valve 20. However, the pipe switching valve 20 has a contactor 21 on the side surface and 22 fixed cams disposed in its orbit, and while the fixed cam 22 presses the contactor 21, the oil is It is sent to the plunger, presses down the expand band shaft 18, and releases the contact 21 at the end of the cam 22. As a result, the Niospant I'1118 rises and the split mold 16
Allow υ contraction.

The magnet holder 9 has a slide plate having a permanent low stone 24 at the center of the tip and a roller 25 at the rear end in a slide frame 23, which is freely movable and biased toward the tip by a spring. There is.

On the other hand, the tip becomes a conical part 26 and engages with the roller 25,
The lower end is provided with a control rod 28 that engages with an elevating cam 27 to move up and down, and when the control rod 28 rises, the slide plate (1-1) moves backward, and when it falls, it moves forward.

The discharge i-el D and the discharge conveyor E have a well-known structure.

The rotary expander having the above structure is constructed and constructed as follows.

The can body that has been transferred by the low-speed conveyor 1 is transferred to the high-speed conveyor 2, and is accelerated while its position is regulated by the spiral groove 4, and the star wheel B, the pocket 6, the rotational speed and the position are adjusted for four stages. , and is kited by the fixed guide 7 and transferred to the pocket 6.

The can body held in the pocket of the star wheel 4 and transported to the four-tally expander A pocket is approximately half placed on the support stand 8, and is attracted to the magnet 24 and transferred to the rotary expander A. 8 and is transferred to 11 by rotation of the disk.

The elevating rod 11 is raised by the cam 12, the empty can is also raised above the support stand 8, and the split die 16 is inserted into the can body. Then, the control rod 28 rises a little, and the conical part 26 touches the roller 25.
The slide plate is moved back by the amount of expansion of the can body V.

Next, the cam 22 moves, the hydraulic granger 17 moves rF, and the expansion shaft 18 is pushed down, and the split mold 16? 'i It is pushed out in the circumferential direction against the spring 15 to form the can body.

Next, the plunger 17 expands the cylinder 11i18.
Fi rises, and the split die 16 is contracted by the spring 15. After that, the elevating rod 11 is lowered by the cam 12, but
Split type] 6 has already shrunk, so the can body is
It descends together with B and the split mold 16 is removed from the can body.

At this time, the control rod 28 is lowered by the cam 27 by the same amount as the lifting rod 11, and the magnetic holder 9 continues to attract and hold the can body.

When the rotary disk 10 rotates t, the can body reaches the discharge wheel D, the control rod 28 is further raised by the cam 27, and the conical portion 26 presses the roller 25 to retract the slide plate. At this time, slide frame 2 is attached to the can body.
3, the magnet 24 is pulled away from the can body and loses its holding force, and the can body is transferred to the discharge star wheel D and is discharged and transferred by the discharge conveyor E.

As described above, the rotary expander main body supports the can body and is controlled by a fixed cam during one rotation to insert the split into the can body, expand the can body υ, and expand the split mold. Since it extracts and fits, the operation is reliable and the molding speed can be increased.

In addition, although the support stand is small, since the can body side part is held using magnets, the can body can be held securely, there is no outer can guide, maintenance is easy, and attachment and detachment are easy.

Since the enlargement of the can body is performed using hydraulic pressure and a pipe switching valve rather than a solenoid valve, there is no need to use an electric brush, and the structure is simple and operation can be ensured.

etc. produce remarkable effects.

[Brief explanation of drawings]

FIG. 1 shows the overall arrangement of the rotary expander of this invention. - Figure 2 is a perspective view of the bath tank body, Figure 3 is a side view of the rotary expander main body,
Figure 4 is an enlarged M view of the support stand/magnetic holder A: Rotary expander body B: Can body supply star wheel C: Control conveyor D = Discharge star wheel E: Discharge conveyor 1: Low speed conveyor 2: High speed conveyor 3: Rotation guide 8: Support stand 9: Magnet t
i Holder 11: Lifting rod 12: Row lowering cam 16: Split mold
17: Hydraulic granger 18: Extract shaft 20:
Pipe switching valve 22: Fixed cam 24: Permanent magnet 27: Cam 28: Control rod Patent applicant Toyo Seikanmi Type Company applicant agent Patent attorney VR, Katsufumi Man (
eyes, or 1 person)

Claims (1)

[Scope of Claims] 1) A rotary expander that is provided with a can body holding part for holding a can body on the periphery of a rotary disk, and expands and molds a can body L7) while holding the can body and making one revolution. , the can body holding part consists of a small support stand approximately half the width of the can body, and a magnet that holds the side part of the can body. Can body f: A rotary expander that is provided with a can body holding part to hold the can body 1 and expands and forms the can body 2 while going around the can body O. It consists of a small support stand of about half a shape, a magnet that holds the side of the can body, a split mold that is inserted into the can body held by the can body holder, and a split mold that is pushed and expanded. Extractor band pressed by a hydraulic plunger,
A rotary expander characterized in that a fixed cam controls the operation of a forming device consisting of a shaft and the displacement of the magnet as the can body expands.