JPS6127159B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a press processing apparatus for metal plate products having a beaded window hole.

For example, handrails made of metal plates, which have been widely used recently, are made of a single metal plate with ring-shaped edges at both the top and bottom.
A plurality of ventilation windows are drilled in parallel at regular intervals, and the peripheral edges of the windows are rounded to form a beaded edge to prevent injury from sharp cutting edges.

This product processing includes a process of punching a window hole into a metal plate, a process of raising the peripheral edge of the window hole against the metal plate, and a process of circularly bending the raised part to form a bead. is necessary.

(Prior Art) Conventionally, in order to form the window holes and ribs, one press machine is prepared which is used for each process, and a desired press upper mold is applied to the press-down ram of the press machine for each process. are being replaced by attaching and detaching. However, replacing the heavy and large press upper and lower molds every time a process changes imposes an excessive workload and reduces the efficiency of processing operations.

In the press processing apparatus disclosed in U.S. Patent No. 4,235,089, a plurality of punching press upper dies (punch) are mounted in parallel on the push-down ram of a single press so that they can move up and down, and the punching pattern is Depending on the type of press, the necessary punching press upper dies are lowered to the operating position, while unnecessary punching press upper dies are raised and held in the non-operating position.

Therefore, the trouble of attaching and detaching the press upper die every time the punching pattern changes is eliminated, but according to this press processing device, even when the metal strip has passed through the entire press processing device, the metal strip is simply Different patterns are simply punched out at different times, and it is not possible to raise the peripheral edge of the punched pattern and to circularly bend the raised peripheral edge to form a beaded edge.

In order to further carry out these processes, it is necessary to separately provide dedicated press processing equipment for each process, which has the disadvantage of increasing investment in press-related equipment and increasing the floor space occupied by the factory.

(Problems to be Solved by the Invention) Therefore, it is an object of the present invention to perform a process of punching a window hole and cutting the edge of the window hole while a metal plate is intermittently transported along a single processing device. A series of steps from the start-up process to the formation of a beaded edge for rounding the raised peripheral edge are performed sequentially for each window hole without the need to attach and detach the press mold every time the process changes,
To provide a press processing device for metal plate products, in which a metal plate product in which a plurality of window holes with beaded edges are formed at predetermined intervals is completed after the metal plate has passed through the processing device. be.

(Means for Solving the Problems) Hereinafter, it will be explained based on the drawings. In the press processing apparatus for metal plate products having a beaded window hole according to the present invention, the metal plate 1 is In the direction intersecting with the direction of transport, there are a press upper mold 2a and a press lower mold 3a for punching the window hole, and a press upper mold 2b and a press lower mold 3b for raising the window hole periphery.
A press upper die 2c and a press lower die 3c for forming the beaded edge are sequentially installed in parallel at the same interval equal to the transfer length of the metal plate 1 at a time. A block support frame 6 is connected to the push-down ram 5, and the press upper die 2a,
Operation block 7 for individually pressing the top surface of 2b...
a, 7b..., and the support frame 6 is equipped with a block drive device 8 for individually moving the operating blocks 7a, 7b...
a, 8b..., and when pressing the metal plate 1 by moving the ram 5 up and down several times, an operation block corresponding to the unnecessary press upper mold is used for the unnecessary press upper mold. A controller 20 for setting the operation order of the block drive devices is provided in the side space of the block drive device, and the block drive devices 8a, 8b, . . . are controlled by electrical signals from the controller 20. The operation is controlled by

(Example) In the illustrated example, the metal plate product is a handrail for a balcony, etc., and the press work performed on the metal plate 1 includes a punching process of window holes 9a, 9b...
In the main steps of forming the rising portions 10a, 10b... and the beading portions 11a, 11b..., reinforcing longitudinal ribs 12a,
12b... is added. Since there are four types of press working, there are also four pairs of press upper and lower dies. The four pairs of press dies are arranged along the direction of conveyance of the metal plate 1, in which window hole punching dies 2a and 3a are placed first, then upright dies 2b and 3b are placed, and then Next, the bead forming molds 2b and 3c are placed,
Finally, rib forming molds 2d and 3d are arranged.

As shown in FIG.
It is intermittently transferred by a certain length each time, and the arrangement interval between the window hole punching molds 2a, 3a and the start-up molds 2b, 3b, the start-up mold 2b , 3b and the bead forming mold 2
Arrangement interval with b and 3c, mold 2 for forming the bead edge part
The spacing between b and 3c and the rib forming molds 2d and 3d is the same as the length of transfer of the metal plate 1 at one time.

As shown in FIG. 2, the block support frame 6 has a pair of guide frame parts 13 and 14 parallel to the direction of transport of the metal plate 1 carried in by the roller conveyor 21, and has a total of four operating blocks 7a, 7b, 7c, and 7d are movably inserted into the guide frames 13 and 14 at both ends thereof. Block drive device 8a, 8
b, 8c, and 8d are constituted by pneumatic or hydraulic operating cylinders, and the main body of the device includes the guide frame portion 13,
It is fixed to a horizontal frame part 15 that is perpendicular to 14. Piston rods 16a, 16b of the hydraulic cylinder...
... are through holes 17a, 17b, 17c formed in the operation block in front, along the metal plate transfer direction.
and is connected to the side of the corresponding operation block.

(Function) The metal plate 1 is moved up and down by the ram 15 as described above.
The metal plate 1 is intermittently transferred by a certain length each time, and four window holes 9a, 9b, 9 are formed on the metal plate 1.
c, 9d and four ribs 12a, 12b, 12c,
12d, the ram 5 is driven up and down seven times in total. That is, the metal plate 1 passes through the following seven stages to become a handrail body having a window hole with a beaded edge.

In the first stage, in which only the front end of the metal plate 1 is inserted, only the punching of the first window hole 9a is required, and three steps are performed: forming the raised part, forming the bead, and punching out the ribs. Since different types of press working are not required, the press upper molds 2b, 2c,
2d does not require any pressing operation. Therefore, the operation blocks 7b and 7 corresponding to these press upper molds are
c, 7d are the block drive devices 8b,
It is moved back and forth by the operations of 8c and 8d, and when the ram 5 moves downward, it descends between adjacent press upper molds and performs blank firing. That is, only the upper press mold 2a for punching the window hole moves downward, and the other press upper molds 2b, 2c, and 2d do not move downward. Thus, the first window hole 9a is bored as shown in FIGS. 5 and 6.

In the second step, in which the metal plate 1 is further inserted for a predetermined length, as shown in FIG. Since only the punching of the window hole 9b is required, the operation block 7c for forming the bead and the operation block 7 for punching out the ribs are operated in the same manner as described above.
When the ram 5 is moved back and forth and the ram 5 is moved downward, blank firing occurs in the same manner as described above. In this way, only the press upper die 2a for window hole punching and the press upper die 2b for start-up work move downward, and the other press upper die 2 move downward.
c.2d does not move downward.

Similarly, in the third stage, only the upper press die 2a for punching the window hole, the upper press die 2b for raising the punch, and the upper press die 2c for forming the bead are moved downward; Therefore, as shown in Figure 8, 3
Punching the second window hole 9c, raising the peripheral edge of the second window hole 9b, and punching the bead 11 to the first window hole 9a.
A is formed.

In the fourth stage, all of the press upper die 2a for window hole punching, the press upper die 2b for raising process, the press upper die 2c for bead forming process, and the press upper die 2d for rib punching process are used. moves downward, punching out the fourth window hole 9d, raising the third window hole 9c, and punching the bead 1 into the second window hole 9b, as shown in FIG.
1b is formed, and the first rib 12a is punched out between the first and second window holes 9a, 9b.

In the fifth stage, the upper press die 2a for punching the window hole does not move downward and the press die 2b performs the rising process, the upper press die 2c for forming the bead, and the upper press die 2d for punching out the ribs. The chisel moves downward to raise the peripheral edge of the fourth window hole 9d and form a beaded edge 11c in the third window hole 9c, as shown in FIG.
A second rib 12b is punched out between the second and third window holes 9b and 9c.

In the sixth stage, the upper press die 2a for window hole punching and the press upper die 2b for start-up processing do not move downward, and the press upper die 2c for bead forming process and the press for rib punching process do not move downward. Only the upper die 2d moves downward, forming the beaded edge 11d in the fourth window hole 9d and forming the bead edge 11d in the third and fourth window holes 9c, 9 as shown in FIG.
The third rib 12c is punched out between the parts b.

In the seventh and final stage, each press upper die 2 for window hole punching, ramping, and bead edge forming is used.
a, 2c, and 2c do not move downward, and only the press upper mold 2b for rib punching moves downward, and as shown in FIG. 12, the fourth rib is placed behind the fourth window hole 9d. I ended up hitting a 12d.

In this way, by lowering the ram a total of seven times, the four window holes 9 with beaded edges formed on the periphery are formed.
a, 9b, 9c, 9d and four reinforcing ribs 12
a, 12b, 12c, and 12d are pressed as shown in FIG.

In the drawings, each block drive device 8a, 8b
. . , in a predetermined order and in a desired direction, is designated by the reference numeral 20.

(Effects of the Invention) As described above, the press working apparatus of the present invention has a press upper die 2a and a press lower die 3a for punching a window hole, and a window hole peripheral edge part Press upper die 2b and press lower die 3b for start-up processing, and press upper die 2c for bead edge forming processing.
and press lower die 3c are sequentially installed in parallel, and a block support frame 6 is attached to the push-down ram 5 of a single press 4.
The block support frame 6 is equipped with operation blocks 7a, 7b, . ...metal plate 1
It is further equipped with block drive devices 8a, 8b, etc., which move the ram 5 back and forth individually along the transfer direction, and when the ram 5 is moved up and down multiple times to perform press processing on the metal plate 1, unnecessary presses are removed at that time. A controller 20 for setting the operation order of the block drive device is provided, which has a circuit configuration such that the operation block corresponding to the upper die is moved downward into the side space of the unnecessary press upper die, and each block drive device 8a, 8b is ... to the controller 20
Since the operation is controlled by electrical signals from the press die, there is no need to attach and detach the press die each time the type of press work to be performed on the metal plate 1 changes. Therefore, the labor burden required for attaching and detaching the press molds is completely eliminated, and it is possible to improve the overall working efficiency of press working.

Moreover, the press upper mold 2a for punching the window hole
The lower press mold 3a, the upper press mold 2b and lower press mold 3b for raising the window hole peripheral edge, and the upper press mold 2c and lower press mold 3c for forming the beaded edge are:
Since they are installed in parallel at the same interval equal to the transfer length of the metal plate 1 at one time, as mentioned above, the operation blocks corresponding to the press upper molds that are not needed at that time can be moved to the unnecessary press upper molds. By simply moving the ram 5 up and down several times and intermittently transporting the metal plate 1 while blankly lowering it into the side space, the process from punching the window hole to raising the peripheral edge of the window hole, etc. A series of steps up to the formation of a beaded edge for rounding the raised periphery are sequentially executed for each window hole, and at the stage when the metal plate 1 has passed through the processing equipment, a plurality of windows with beaded edges are formed. A metal plate product with holes formed at predetermined intervals is completed.

That is, according to the press processing apparatus of the present invention, all of the processes necessary for manufacturing a metal plate product having a window hole with a beaded edge are completely carried out in a self-contained manner. There is no need to set up the periphery of the rim or to install a separate press processing device to circularly bend the erected periphery to form the bead. There is no increase in the floor space occupied by the building.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a front view of the press working device in a standby position, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. FIG. 3 is a partially cutaway plan view of the block support frame portion. Fig. 4 is a front view of the press processing device during punching of the first window hole, Fig. 5 is a plan view of the metal plate for manufacturing handrails with the first window hole punched in the first stage, and Fig. 6 is an enlarged sectional view taken along line B-B in FIG. 5; FIGS. 7 and 8 are cross-sectional views of the metal plate after passing through the second and third stages, respectively. FIGS. 9 and 10 are cross-sectional views of the metal plate after passing through the fourth and fifth stages, respectively. Figures 11 and 12
The figures are cross-sectional views of the metal plate after passing through the sixth and seventh stages, respectively. FIG. 13 is a plan view of the metal plate product shown in FIG. 12, that is, a completed handrail. 1... Press processing, 2a, 2b... Upper press die, 3a, 3b... Lower press die, 4... Press machine, 5... Ram, 6... Support frame, 7a, 7b...
Operation block, 8a, 8b...Block drive device, 20...Controller for setting the operating order of the block drive device.

Claims (1)

[Claims] 1 In a direction intersecting with the direction in which the metal plate 1 is intermittently transferred by a certain length, a press upper die 2a and a press lower die 3a for punching the window hole, and a press upper die for punching the window hole periphery. Mold 2b and lower press mold 3b
A press upper die 2c and a press lower die 3c for forming the beaded edge are sequentially installed in parallel at the same interval equal to the transfer length of the metal plate 1 at a time. A block support frame 6 is connected to the push-down ram 5, and the press upper die 2a,
Operation block 7 for individually pressing the top surface of 2b...
a, 7b..., and the support frame 6 further includes block drive devices 8a, 8b... for individually moving the operating block support frames 7a, 7b... back and forth along the transport direction of the metal plate 1. When the ram 5 is moved up and down several times to perform press processing on the metal plate 1, an operation block support frame corresponding to an unnecessary press upper mold is placed in the side space of the unnecessary press upper mold. A controller 20 for setting the operating order of the block drive devices, which is configured in a circuit to perform a dry firing downward, is provided, and each block drive device 8a, 8b, .
A press processing device for metal plate products having a window hole with a beaded edge, the operation of which is controlled by electrical signals from the press.