JPH0247295B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a press device.

[Conventional technology]

Have many pairs of punches and dies, and combine them into one
As a device for making holes of various shapes in a plate material by sequentially applying pressure using pressure means at several locations, there is a so-called turret machine in which the above-mentioned large number of punch and die sets are installed on the same circumference of a disc turret. There is a type of punch press machine, and a type where a large number of punch and die sets are mounted on a slide frame that can be moved in one direction, but both types support a large number of tool sets in a smooth and freely movable manner. Moreover, when it is held under the action of the pressing means, it must be held at a precise and fixed position, which tends to require a large amount of equipment and also makes the control complicated. .

On the other hand, in recent years, attempts have been made to combine punch press machines and laser processing machines to process holes with complex shapes and large shapes using laser processing, and small diameter holes using punch processing. Multi-function machines have been developed to do this, but since these multi-function machines have multiple processing heads,
In particular, there has been a demand for a smaller processing head itself, and since it is a multi-function machine, there is an advantage that fewer types of tools are needed for punch processing, so there has been an even greater demand for a smaller processing head.

[Problem that the invention seeks to solve]

The present invention aims to eliminate the above-mentioned disadvantages and provide a press device suitable for the above-mentioned multitasking machine.

[Means for solving problems]

The press device according to the present invention includes a ram member that is driven up and down in the vertical direction and rotated around the vertical axis by an indexing device,
A plurality of punch tools are arranged on the same circumference with this ram member as the center, an engaging part is formed in the ram member, and each of the punch tools is arranged in the same plane as the engaging part in the non-punch position. An engaged portion for the engaging portion is provided at a position, and the engaging portion and the engaged portion are formed into a fitting structure consisting of a combination of a concave portion and a convex portion. The ram member is not engaged by the index rotation of the member, but is engaged by the vertical movement of the ram member, and moves up and down integrally.

〔Example〕

Figures 7 and 8 are a plan view and a side view, respectively, of a composite processing machine for sheet materials in which a press device according to the present invention is mounted in a punching head 1 and also has a laser processing head 2, and the machine is C-shaped in side view. On the entire frame of the board, there is installed a plate moving table device 3, the laser processing head 1, the punch processing head 2, a laser oscillator 4 for the laser processing head 2, an NC device 5, a control device 6 for the mounting body, etc. It has been posted.

The plate material moving table device 3 is integrated with left and right tables 7 and 8 that are movable along the Y direction in the figure, a fixed table 9 between the left and right tables 7 and 8, and the left and right tables 7 and 8. Carriage 11 moving in the Y direction, and further carriage 11
It consists of a work holder 12 that is provided above and moves along the X direction in the figure, and the plate work W is
The work holder 12 holds one side of the work holder 12 and allows the work holder 12 to move it vertically and horizontally on the tables 7, 8, and 9 within a horizontal plane.

Reference numeral 13 designates an idle ball that smoothly moves the plate workpiece W on the fixed table 9, and 14 designates a reversing roller that similarly slides the workpiece movement on the left and right tables 7 and 8.

A laser light source from the laser oscillator 4 is guided to the laser processing head 2, and the light beam is directed vertically downward and irradiated at right angles to the surface of the plate on the table.
is constructed as follows according to this invention.

That is, as shown in FIGS. 1 to 3, the punch processing head 1 of this embodiment has a total of eight punch tools 15 provided at the upper front end of the frame, and one punch tool for every four punch tools 15. A total of 2
It consists of a base pressing device 16 and a total of eight die tools 17 corresponding to the punch tool 15 provided on the fixed table 9.
6 is a hydraulic cylinder 1 installed upright on the frame.
8, a shaft-shaped ram member 21 rotatably connected to the end of the rod 20 of the hydraulic cylinder 18 via a coupling 19, and an indexing device 22 for rotating the ram member 21.
The central axis of the ram member 21 is located on the center of the four punch tools 15. In other words, the four punch tools 15 are arranged on the same circumference around the ram member 21. At the lower end of the ram member 21, a flange portion 15a having approximately the same outer shape as the upper flange portion 15a of the punch tool 15 is provided, and when the ram member 21 rotates, it does not engage with the flange portion 15a and passes through the flange portion 15a as it is. However, a U-shaped recess 21a is formed which engages with the flange portion 15a when the ram member 21 moves up and down.

23 is a bushing material that supports the ram member 21 rotatably and vertically;
The circular flange portion 21b at the upper end is the coupling ring 1.
It is engaged with the engaging portion in 9 and is rotatably connected.

Further, a spline-shaped gear 21c is formed on the upper part of the ram member 21, and the gear 21c portion is a large-diameter idler gear 2 provided on the frame F.
4. It is meshed and connected to a pinion gear 27 on the output shaft of an index motor 26 via a small-diameter idler gear 25, and by rotating the index motor 26 by an appropriate angle, the ram member 21 can be rotated.
It can be rotated in 90 degree increments.

In other words, the index motor 26 and the idler gears 24, 25 also operate the index device 2.
2.

The large-diameter idler gear 24 meshes with the left and right ram members 21 (FIG. 2), and by rotating one index motor 26, both ram members 21 are rotated.

An annular recess 20a and a flange portion 20b at the uppermost end are formed in the upper part of the rod 20 that penetrates the hydraulic cylinder 18, and the recess 20a has an engaging member that is driven forward and backward by the air cylinder 28 from the side. Stop plate 29
is thrust into engagement to prevent the rod 20 from falling when the hydraulic cylinder 18 is not in operation (that is, while punching is not being performed). Proximity switch 31, 32,
It is set up facing 33.

That is, as shown in FIG. 3, the bracket 34 on the frame has the highest position (solid line) of the rod 20 of the hydraulic cylinder 18, the lowest position (two-dot chain line), and the intermediate position (one-dot chain line). Proximity switches 31, 32, and 33 are provided at heights corresponding to the positions of the rod 20, that is, the position of the punch tool 15 via the ram member 21, but the position of the punch tool 15 via the ram member 21 can be detected. The position proximity switch 33 indicates that the punch tool 15 is at the maximum thickness of the plate material W.
After punching out, the height position is set at such a height that it completely comes out of the plate material W when it rises again, and the signal from the proximity switch 33 is transmitted to the moving table device
By setting the start signal to
It is possible to start moving the plate material as early as possible without causing damage to the machine even if the plate material is moved, thereby shortening the machining cycle time.

35 is an elongated hole drilled in the bracket 34, and a screw (not shown) is used to adjust each proximity switch 31, 3.
2,33 height can be adjusted.

Further, 36 is a fall prevention device for the punch tool 15, and a slide key 37, which is always urged upward by a spring, is inserted into a key groove 15b on the side surface of the punch tool 15.

Next, the die tool 17 will be explained. As shown in FIGS. 4 to 6, the die tool 17 is fixed on one cartridge 38 for every four die tools 17, and a total of two cartridges 38 are fixed on the die tool 17. 38 is fastened to the punching head position of the fixed table 9.

One side of each cartridge 38 has a slope 3.
The die tool 17 is fixed on the table 9 for each cartridge 38 by engaging a tightening lever 42 which is formed at 8a and rotates around a support shaft 41 by a cylinder 39 integrated with the slope 38a. (solid line in Fig. 5), and by releasing the tightening lever 42, the die tool 17 is attached to the cartridge 3.
8 can be removed from table 9 (dashed line in Figure 5).

43 is a stop plate fixed to the frame F that regulates the other side of the cartridge 38; 44 is a support shaft 41;
The bracket 45 is a cylindrical slug chute provided below the position of each fastened die tool 17.

Also, around the die tool 17, there are free rotating ball devices 46, 47, 48 that move up and down as shown below.
is provided.

That is, as shown in FIGS. 4 and 6, the free-rotating ball device 46 includes a cylindrical member 51 that is integrated with the cartridge 38, and a cylindrical portion 52a at the base end of the cylindrical member 51 that passes through the inside of the cylindrical member 51. It consists of a ball housing member 52 that is supported so as to be vertically movable, and a ball 53 that is freely rotatably supported within the housing member 52, and the lower end of the cylindrical portion 52a is formed in the shape of a flange 52b. The spring 54 interposed between the cylindrical member 51 and the cylindrical member 51 normally urges the ball 53 downward.
Although the position is lower than the upper surface of the die tool 17, the following lifting device 55 is provided below the free rotating ball device 46 to lift the top of the ball 53 to a higher position than the upper surface of the die tool 17. be.

That is, a connecting plate 58 (FIG. 4) having a T-shape in plan view is fixed to a rod 57 of a cylinder 56 fixed perpendicularly to the frame F, and a lifting member 59 is fixed to one end 58c of the connecting plate 58. The lifting member 59 passes through a through hole 61 on the lower surface of the frame and faces the lower end of the cylindrical portion 52a, so that the housing member 52 of the idling ball device 46 can be raised and lowered by the expansion and contraction of the cylinder 56. It's getting old.

In this example, the lifting member 59 is a hollow cylindrical body, an air pipe 62 is connected to the member 59, and air press-ined from the air pipe 62 is supplied to the sixth cylinder.
In the illustrated state, the air is ejected upward from the periphery of the ball 53 through the housing member 52 of the free-rotating ball device 46, and the air is injected into and out of the air pipe 62 through the connection. Board 58
It is designed to be turned on and off by a mechanical valve 64 that is switched by the vertical movement of a bolt 63 that is integrally installed in the cylinder.When the cylinder 56 is extended and the ball 53 is lifted (as shown in the sixth figure), the mechanical valve 64 As the air enters, air blows out from around the ball 53 as described above, the cylinder 56 contracts, and the ball 53
When the height of the die tool 17 becomes lower than the height of the die tool 17, the mechanical valve 64 is turned off (dashed line in FIG. 6), the supply to the air piping is cut off, and the ejection of air is stopped.

Note that 65 is a urethane material that prevents air from leaking from the contact surface between the lifting member 59 and the housing member 52.

Further, 66 is a guide bearing at the tip of the rod 57 of the cylinder 56, and the other two tips 58a and 58b of the connecting plate 58 are also attached with lifting members connected to air piping similar to the above, and are attached to the surface of the table. It is adapted to lift the other attached free-rotating ball devices 47, 48.

These free-rotating ball devices 47 and 48 also have the same structure as the free-rotating ball device 46 described above.

Since the multi-tasking machine of this embodiment has the above structure, the movable table 3 is operated to bring an arbitrary part of the plate workpiece W to the laser processing head 2 or punch processing head 1, and perform the respective operations. The punching tool 15 of the punching head 1 is selected as follows.

That is, after rotating the index motor 26 to rotate the ram member 21 and bringing the desired tool into engagement with the ram member 21, one of the left and right hydraulic cylinders 18 is extended, and one of the eight Only the desired punch tool 15 is punched downward, and as soon as punching is completed, the hydraulic cylinder 18 is contracted to lift the tool 15 and pull it out from the plate workpiece W.

At this time, the completion of punching and pulling out of the punch tool 15 can be detected by the proximity switches 32 and 33, and the processing position on the next plate workpiece W is immediately brought to the punching position by the drawing completion signal. The operation of the moving table device 3 is started as described above.

In addition, in the processing machine of this embodiment, the die tool 17
Since the surrounding free-rotating ball devices 46, 47, and 48 are configured as described above, the movable table device 3
When the workpiece W is moved over the die tool 17 by operating the die tool 17, the ball 53 is raised (the sixth
(Fig.), the lower surface of the plate workpiece W is supported extremely smoothly by the ball 53 and the ejected air, and there is no damage caused by sliding contact with the upper surface of the die tool 17, etc., and the ball 53 and the housing member 52 are Although dust does not enter between the balls 53 and 53, when the plate workpiece W is stopped for punching, the ball 53
is lowered, and the lower surface of the plate workpiece W comes into close contact with the upper surface of the die tool 17.

At this time, the blowing of air from around the ball 53 is also stopped, as described above, so that energy can be saved.

In the above embodiment, the hydraulic cylinder 18 is used to drive the ram member 21 up and down, but the cylinder may be replaced with an upper and lower shaft connected to a crankshaft, or the same circumference around the ram member 21 may be used. The number of 15 punch tools above is not limited to 4, but 6.
An appropriate number, such as eight or eight, is sufficient.

〔Effect of the invention〕

As is clear from the above description, the press apparatus according to the present invention allows a plurality of tool sets to be arranged in a compact manner, and is therefore extremely suitable as a punch processing head of a multi-processing machine that also performs laser processing or the like.

Moreover, since the ram member rotated by the index and the punch tool are engaged in a structure in which both move up and down as one, the selected punch tool is forced out of the plate workpiece at the same time as the punching is completed. be pulled out. Therefore, the table device can immediately start operating to the next processing position, which has the effect of shortening the cycle time.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional side view of the punching head portion of a multi-tasking machine equipped with a press device according to the present invention, Fig. 2 is a sectional view taken along the line - - of Fig. 1, and Fig. 3 is a side view showing the upper part of the hydraulic cylinder. Figure 4 is a plan view of the die tool part, Figure 5 is a side view of the same, Figure 6 is a sectional view taken along the - line in Figure 4, Figure 7 is a plan view of the entire multitasking machine, and Figure 8 is a plan view of the die tool part. It is the same side view. DESCRIPTION OF SYMBOLS 1...Punching head, 15...Punching tool, 15a...Flange part (engaged part), 18...
... Hydraulic cylinder, 20 ... Rod, 21 ... Ram member, 21a ... Recess (engaging portion), 22 ... Index device.

Claims (1)

[Claims] 1. A ram member is provided which is driven up and down along the vertical direction and rotated around the vertical axis by an indexing device, and a plurality of punch tools are arranged on the same circumference with this ram member as the center, An engaging part is formed in the ram member, and an engaged part for the engaging part is provided at a position of each of the punch tools in the same plane as the engaging part in a non-punch position, The mating portion is formed into a mating structure consisting of a combination of a concave portion and a convex portion, and the ram member and the punch tool do not engage with each other by index rotation of the ram member,
A press device characterized in that the ram member is engaged with the vertical movement of the ram member and moves up and down integrally.