JPH0415371Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a forming device for metal cylinders.

BACKGROUND ART Conventionally, in order to curl the upper end of an aluminum cylindrical body, for example, as shown in FIG. Then, the upper mold 34 was lowered from above to form the mold. However, in the conventional molding apparatus, the lower mold 33 is fixed to the bed 31 directly below the upper mold 34, and therefore, when the cylindrical body W is fitted over the lower mold 33 from the upper end during molding, or after molding, the lower mold 33 is fixed to the bed 31. When pulling out the body W upward from the upper end of the lower die 33, the upper die 34 inevitably gets stuck, which not only causes poor workability but also causes the upper die 3
4 and the lower die 33, it is necessary to leave a gap equivalent to the length of the cylinder W to be processed.
There is a problem that the length is limited and it is not possible to form a long cylinder W, and the lifting stroke A of the upper die 34 is at least the length l of the cylinder W to be processed.
Since it is longer, there is a problem in that equipment costs and power costs are inevitably high. Furthermore, conventionally, in order to minimize the deformation of the cylindrical body W to be processed during curl forming, the clearance between the cylindrical body W to be processed and the lower die 33 has been reduced, and therefore However, there was a problem of poor workability.

Purpose of the invention The purpose of this invention is to solve the above-mentioned problems, and when forming a metal cylindrical body, when fitting the cylindrical body over the lower mold from the upper end thereof, or after forming, pulling the cylindrical body upward from the upper end of the lower mold. During the process, the upper mold does not get stuck at all, making it extremely easy to work with.Moreover, there is no need to leave a gap equivalent to the length of the cylinder between the upper mold and the lower mold. There is no restriction on the length of the cylinder to be processed, and long cylinders can be formed.Furthermore, the lifting stroke of the upper die is extremely short, so equipment costs and power costs are extremely low. To provide a metal cylindrical body forming apparatus, which allows the cylindrical body to be processed to be attached and removed very easily even when the clearance between the cylindrical body to be processed and the lower die is small, and which can form metal cylindrical bodies very efficiently. There it is.

Structure of the Device In order to achieve the above object, this device includes a sliding plate attached to the upper surface of the bed so as to be slidable from side to side, and an upwardly protruding shape formed on the upper surface of the sliding plate at a predetermined interval from each other. a pair of left and right lower molds provided on the bed, and an upper mold that can be raised and lowered to form a metal cylindrical body placed above the center of the bed and fitted over each of the lower molds in cooperation with the lower molds. sliding plate driving means for alternately positioning a pair of lower molds on the sliding plate directly below the upper mold;
It has knock-out rods that push up from below the formed metal cylindrical body held in the lower die, which is placed on both the left and right sides of the press bed and moved to one of the left and right sides of the upper die. The gist of this invention is a metal cylindrical body forming apparatus that is equipped with a pair of lockout devices.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In this specification, front, back, right and left are based on Figure 1, where the front refers to the front side of the paper sheet in Figure 1, the rear refers to the back side, the left refers to the left side of the same figure, and the right refers to the right side of the same figure. shall be said.

1 to 4, the apparatus for forming metal cylinders according to this invention has a sliding plate 2 attached to the upper surface of the bed 1 so as to be slidable left and right, and a predetermined position on the upper surface of the sliding plate 2. A pair of left and right lower molds 3 are provided in an upwardly projecting manner at intervals, a ring 6 is loosely fitted over each lower mold 3 so that it can be raised and lowered, and a bed 1 is provided.
an upper mold 4 which can be freely raised and lowered to form a metal cylinder W made of aluminum or the like, which is placed above the central part of the ring 6 and is fitted onto each lower mold 3 from above the ring 6; , a sliding plate driving means 5 consisting of an air cylinder for alternately positioning a pair of lower molds 3 on the sliding plate 2 immediately below the upper mold 4; A pair of knock-out devices 10 each having a knock-out rod 11 for pushing up from below, via a ring 6, a molded metal cylindrical body W held by a lower die 3 which has been moved to one of both sides. It is equipped with

A recess 7 is provided in the upper surface of the bed 1 in the length direction of the bed 1, and the sliding plate 2 is fitted into this, and the steps 2a, 2a on both the front and rear sides of the sliding plate 2 are the openings of the recess 7. The sliding plate 2 is engaged with the inner convex portions 8, 8 on both the front and rear sides, so that the sliding plate 2 can freely slide left and right. At the right end of the sliding plate 2 is a piston rod 9 of a sliding plate driving means 5 consisting of an air cylinder.
The tips of the two are connected.

Further, the lower mold 3 is provided at both left and right ends of the upper surface of the sliding plate 2 in an upwardly projecting manner, and the metal cylindrical body W
A tapered portion 3a is provided at the tip of each lower die 3 to facilitate fitting. A ring 6 having an inner diameter slightly larger than the outer diameter of each lower die 3 is loosely fitted over the lower die 3 so as to be movable up and down. Since the metal cylindrical body W is fitted onto the lower die 3 from above the ring 6 and is supported by the ring 6, its outer diameter is made to be the same as or smaller than the outer diameter of the ring 6. There is.

The upper mold 4 is placed above the center of the bed 1,
This is attached to the holder 12. It should be noted that illustration of a lifting device consisting of an eccentric driving means for the upper die 4 is omitted. The upper mold 4 has a substantially cylindrical shape, and has a curved surface on its lower inner peripheral surface for curling the upper end of the metal cylinder W made of aluminum or the like inward in cooperation with the lower mold 3. A stepped portion 13 is provided. Further, an annular engagement step portion 14 is provided on the upper inner circumferential surface of the upper die 4 . A bending speed adjusting lifting body 15 in the shape of a cylinder with an upward opening and a bottom is fitted into the upper die 4 . An annular outward convex portion 16 is provided at the upper end of the elevating body 15, and this convex portion 16 is engaged with an annular engagement step portion 14 on the upper inner peripheral surface of the upper mold 4. An air inlet/outlet through hole 17 is provided on one side of the approximately central portion of the upper mold 4, and a vertical groove 18 with an arcuate cross section is provided continuous to the inner end of the through hole 17. An annular groove 19 having an arc-shaped cross section is provided on the outer periphery of a portion near the upper end of the elevating body 15, and through holes 20 are provided on all sides of the same portion of the elevating body 15. The inner hollow part 21 surrounded by the upper mold 4, the elevating body 15, and the upper mold holder 12 has an air inlet/outlet through hole 17 of the upper mold 4, a vertical groove 18, and a vertical groove 18 of the elevating body 15. Annular groove 1
Air enters and exits through the through holes 9 and 20.

A pair of left and right knockout devices 10 are arranged below both left and right ends of the bed 1. Each knockout device 10 includes a mounting member 22 that is approximately U-shaped when viewed from the side, and a piston attached to the horizontal portion of the mounting member 22.
The air cylinder 23 is installed with the rod 24 facing upward, and the lockout rod support member 25 is fixed horizontally to the tip of the piston rod 24.
and a pair of knock-out rods 11 attached to both left and right ends of the support member 25 in an upwardly projecting manner. A through hole 26 for inserting a knockout rod is formed in the bed 1 portion above the knockout rod 11 of each knockout device 10, and a through hole for inserting a knockout rod is similarly formed below the ring 6 on both sides of each lower die 3 of the sliding plate 2. 27 is open.

In the above molding apparatus, a metal cylinder W made of aluminum or the like is fitted onto the lower mold 3 on the side of the upper mold 4 . Therefore, in this case, the upper mold 4 does not interfere with the work of mounting the cylinder W at all. Note that a ring 6 is fitted onto each lower die 3 in advance.

After the metal cylindrical body W is fitted over the lower mold 3 on the sliding plate 2, the lower mold 3 is moved to the position directly below the upper mold 4 in the center of the head 1 by the operation of the sliding plate driving means 5 consisting of an air cylinder. I am forced to do it.

Then, in the center of the bed 1, the upper mold 4 is lowered relative to the metal cylinder W fitted over the lower mold 3 positioned directly below the upper mold 4.
The upper end of the metal cylindrical body W is bent and formed by the cooperation of the lower die 3 and the lower die 3.

At this time, the upper end of the lower mold 3 is connected to the lifting body 1 inside the upper mold 4.
5 is pushed up from below, and the air in the hollow part 21 of the upper die 4 is discharged to the outside through the through hole 20 and the annular groove 19 of the elevating body 15, as well as the groove 18 and the through hole 17 of the upper die 4. Therefore, in this case, it is possible to adjust the raising and lowering speed of the elevating body 15, that is, the forming speed of the metal cylindrical body W, by appropriately adjusting the air discharge speed.

At this time, the metal cylinder W is fitted over another lower mold 3 on the other side of the upper mold 4.

After forming the metal cylindrical body W, the sliding plate 2 is now slid in the opposite direction to the above case by the operation of the driving means 5 consisting of an air cylinder, thereby holding the metal cylindrical body W after forming. The lower mold 3 is sent out to the side of the upper mold 4.

On the side of the upper mold 4, the molded metal cylinder W held by the lower mold 3 is inserted into the knockout rod 1 which passes through the through holes 26 and 27 of the bed 1 and the sliding plate 2.
1 pushes up from below through ring 6,
It is removed from the lower mold 3.

By the sliding movement of the sliding plate 2, the new metal cylinder W fitted over the lower mold 3 is simultaneously positioned below the upper mold 4, and the above operation is repeated.

In FIG. 1, the lower die 3 on the right side on the sliding plate 2
The metal cylindrical body W that has been fitted and covered is moved directly under the upper mold 4, and its upper end is bent and formed, and the formed metal cylinder is fitted and covered with the lower mold 3 on the left side of the sliding plate 2. The state in which the body W is pushed up from below through the ring 6 by the knockout rod 11 and removed from the lower mold 3 is shown.

In the above, although not shown, the signals for the sliding of the sliding plate 2 having the lower mold 3 and for stopping the machining point are all transmitted from the proximity switch, and the timing for machining the upper mold 4 is transmitted from the proximity switch. This can also be managed electrically, and the forming operation of the metal cylindrical body W, such as aluminum, can be carried out completely automatically and efficiently.

Effects of the invention As described above, the metal cylindrical forming apparatus according to this invention has a sliding plate 2 attached to the upper surface of the bed 1 so as to be slidable left and right, and a sliding plate 2 mounted on the upper surface of the sliding plate 2 at a predetermined interval from each other. A pair of left and right lower molds 3 are provided in an upwardly protruding manner, with a ring 6 loosely fitted over each lower mold 3 so as to be able to move up and down, and a ring 6 is placed above the center of the bed 1 and each The upper mold 4, which can be raised and lowered, and the pair of lower molds 3 on the sliding plate 2 are alternately used to form the metal cylindrical body W fitted onto the lower mold 3 from above the ring 6 in cooperation with the lower mold 3. It is held by a sliding plate driving means 5 located directly below the upper die 4 and a lower die 3 disposed on both left and right sides of the press bed 1 and moved to one of the left and right sides of the upper die 4. The device is equipped with a pair of knockout devices 10 having knockout rods 11 that push up the metal cylindrical body W after molding from below through a ring 6, and when the metal cylindrical body W is molded, the cylindrical body W is When fitting the cylinder W into the lower mold 3 from its upper end, or when pulling the cylindrical body W upward from the upper end of the lower mold 3 after molding, the upper mold 4 does not become stiff at all, and the workability is very good. Moreover, there is no need to provide a gap corresponding to the length of the cylinder W between the upper mold 4 and the lower mold 3,
Therefore, the length of the cylindrical body W to be processed is not limited, and a long cylindrical body W can be formed.Furthermore, the lifting stroke of the upper mold 4 is extremely short, which reduces equipment costs and power. The cost is very low,
Further, even when the clearance between the cylindrical body W to be processed and the lower mold 3 is small, the cylindrical body W to be processed can be attached and detached very easily, and the metal cylindrical body W can be formed very efficiently.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention. Figure 1 is a partially cutaway front view of the product of the invention, Figure 2 is a plan view of the product of the invention with the upper die omitted, and Figure 3 is a diagram of the product of the invention. The cross-sectional view, FIG. 4, is an enlarged sectional view of the main part of FIG. 1. FIG. 5 is an enlarged partially cutaway front view of a conventional molding device. 1...Bed, 2...Sliding plate, 3...Lower mold, 4
... Upper mold, 5 ... Air cylinder (sliding plate driving means), 6 ... Ring, 10 ... Knockout device,
11... Knockout stick.

Claims (1)

[Scope of utility model registration request] A sliding plate 2 is attached to the upper surface of the bed 1 so as to be slidable left and right, a pair of left and right lower molds 3 are provided on the upper surface of the sliding plate 2 in an upwardly projecting manner at a predetermined distance from each other, and an upper mold 4 which can be raised and lowered to form a metal cylindrical body W disposed above the central part of the mold 1 and fitted over each lower mold 3 in cooperation with the lower mold 3; A sliding plate driving means 5 for alternately positioning a pair of lower molds 3 directly below the upper mold 4; A metal cylindrical body forming apparatus comprising a pair of knockout devices 10 each having a knockout rod 11 that pushes up a molded metal cylindrical body W held by a lower die 3 that has been moved from below.