JP2514791Y2 - U-shaped punch / die set - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a U-shaped punch / die set used for punching a plate material or other material to be processed, and particularly to a press or other The present invention relates to a U-shaped punch / die set improved so that a punch and / or a die can be easily exchanged in a state of being attached to a processing machine.

[Conventional technology]

Conventionally, when performing punching on an iron plate or other material to be processed, a U-shaped punch / die set is used, and this U-shaped punch / die set is mounted on, for example, a press table, and a press ram is attached. It is common to perform punching or the like on the work material by operating the punch via the.
When making a plurality of holes at the same time, a plurality of U-shaped punch / die sets having the above-mentioned configuration are provided side by side, or a plurality of pairs of punch dies are provided in the U-shaped punch / die set. Since it is necessary to change the shape and size of the hole and the hole position variously in the small-lot production method of various types or the so-called FMS production method in recent years, many U-shaped punches and die sets are prepared even with one press machine. You need to do it. Therefore, the reality is that the U-shaped punch / die set is attached / detached to / from the press table very frequently.

In the above-mentioned conventional U-shaped punch / die set, one end of the punch holder and the die holder, which are arranged to face each other with a space therebetween, is opened and the other end is integrally joined to form a substantially U-shape. At least 1 near the open end
It is configured with a pair of punch dies. The most general means is to make a mounting hole through the die holder in the vertical direction and mount it on the table of the press with mounting bolts and nuts.

[Problems to be solved by the device]

In the conventional U-shaped punch / die set having the above structure, since the punch and the die are directly fixed to the punch holder and the die holder respectively, a large number of U-shaped punch / die sets having different hole shapes and sizes and hole positions are prepared. However, there is a problem that the cost increases. If the punch and / or die are worn or damaged due to long-term use, it is necessary to replace the punch and / or die. In this case, it is difficult and dangerous to replace only the punch and / or die while they are mounted on the press table. It will be a work. That is, a space corresponding to at least the length of the punch is required above the punch holder when the punch is attached or detached, but in general, the space between the punch and the ram is extremely small in a dedicated press, so the above space cannot be secured. . On the other hand, even when the die is attached or detached, it is difficult to replace the die while the punch / die set is mounted on the press table because the punch or punch holder is approaching above the die. For this reason, it is necessary to remove the entire U-shaped punch / die set from the table of the press and mount a new U-shaped punch / die set, or re-mount the punch and / or die after replacement, for example, in a tool room. Therefore, it takes a lot of time and man-hours to attach and detach the U-shaped punch and die set, and the working time of the main body such as drilling is reduced, resulting in a problem that the operating rate of the press is reduced. Further, the work of attaching and detaching the U-shaped punch / die set is usually performed in a narrow work space, and not only the work is complicated, but also the work requires skill and the work man-hour increases. Coexist.

The present invention solves the above-mentioned problems existing in the prior art,
U improved so that the punch and / or die can be easily replaced even when mounted on a press table or the like.
The purpose is to provide a die punch / die set.

[Means for solving the problem]

In order to achieve the above object, in the present invention, one end of a punch holder and a die holder, which are arranged to face each other with a gap, is opened and the other ends are integrally joined to form a substantially U-shape.
In a U-shaped punch die set having at least one pair of punch dies near the open ends of the punch holder and the die holder, a punch cassette and a punch holder in which the punches are vertically slidably interposed, Also, the die cassette and the die holder are formed so as to be able to come into contact with and separate from the end portions on the back side, respectively, and the pressing plate is detachably provided on the open end side surface of the punch cassette and the punch holder. In the above, there is provided a location pin that is capable of projecting and retracting in the vertical direction, and the punch cassette and the die cassette are formed so as to restrain and allow the horizontal movements thereof, respectively, and detachably provided near the open ends of the punch holder and the die holder. Adopted means.

[Action]

With the above structure, even if the U-shaped punch / die set is still attached to the table of the press, the punch cassette and / or the die cassette can be horizontally moved and removed by operating the engaging / disengaging means. Can
A separately prepared punch cassette and / or die cassette can be attached, and processing operations such as subsequent drilling can be immediately resumed.

〔Example〕

1 to 3 are partially omitted longitudinal sectional views, partially omitted plan views and right side views, respectively, showing an embodiment of the present invention, and FIG. 4 is a view taken along the line AA in FIG. 1 and FIG. FIG. 4 is a sectional view taken along line BB in FIG. In these figures, 1 and 2 are a punch holder and a die holder, respectively. For example, the cross-sectional shape is made of ductile cast iron into a U shape and a flat shape,
A space block 3 made of, for example, a steel material is clamped at one end and integrally joined with a bolt 4. A fixed post 5 is fitted through the punch holder 1, the space block 3 and the die holder 2 to prevent relative movement between them. A fixed bush 6 is fitted in the punch holder 1. Reference numerals 7 and 8 are elongated holes, which are formed in the intermediate portions of the punch holder 1 and the die holder 2, respectively, in order to insert mounting bolts (not shown). Reference numerals 9 and 10 denote a punch cassette and a die cassette, respectively, which are detachably provided near the open ends of the punch holder 1 and the die holder 2 via engaging / disengaging means as described later. A parallel projecting edge 11 is projected from the upper end of the punch cassette 9, fitted in a parallel groove 12 formed in the punch holder 1, and formed so as to be slidable in the longitudinal direction of the punch holder 1. Reference numeral 13 denotes a set plate, which is fixed to the upper surface of the punch holder 1 via bolts 14 and is brought into contact with the rear end edge portion of the punch cassette 9 to restrain the upward movement of the punch cassette 9. Next, 15 is a presser plate,
An elongated hole 16 is provided, and the elongated hole 16 is provided so as to come into contact with the open end surface of the punch cassette 9 via a bolt 17 planted on the open end surface of the punch holder 1 so as to penetrate the elongated hole 16. 18 is a clamp lever, which is integrally fixed to the end of the bolt 17. The punch cassette 9 has a hollow guide bush 19 formed therein.
Then, the stripper 20 and the punch 21 formed in a cylindrical shape in the guide bush 19 are slidably fitted in the axial direction. Reference numeral 22 is a lifter spring, and the stripper 20
And the punch cassette 19 is interposed. 23 is a key stopper, which is fixed to the upper surface of the punch cassette 9,
Engage so as to restrain the rotation of the. At the upper end of the punch 21, a seat ring 24 that contacts the stripper 20, a urethane 25, and a punch head 26 are fixed. Next, the die 27 is embedded and fixed in the approximate center of the upper end of the die cassette 10, and a parallel projecting edge 28 is projectingly provided at the lower end, so that the set plate 29 provided on the die holder 2 moves the die cassette 10 up and down. The die holder 2 is restrained and slidable in the longitudinal direction of the die holder 2. Reference numeral 30 denotes a handle, which is fixed to the open end surface of the die cassette 10. Next, 31 is a rotary shaft, which is rotatably provided at the open end of the die holder 2 and has a bush 32 fitted to the die holder 2 and a hole 33 coaxially provided on the die cassette 10 slidably provided with a location pin. It is formed so as to engage with the groove 35 of 34 through the pin 36. 37 is a mini ball plunger, 38 is a stopper bolt, which is provided on the die holder 2 so as to engage with the groove 40 of the rotary shaft 31. 39 is a lever,
It is integrally fixed to the end of the rotary shaft 31.

With the above configuration, the punch cassette 9 having the predetermined punch 21 and the die cassette 10 having the die 27 are mounted on the punch holder 1 and the die holder 2, respectively.
If the die punch / die set is attached to, for example, a table of a press, work such as drilling can be performed on the material to be processed. Next, when the shape, size, etc. of the hole to be machined in the material to be machined are changed, in order to replace the punch cassette 9, the clamp lever 18 is rotated counterclockwise, for example, in FIG. Since the pressing state of the pressing plate 15 by 17 is released, the pressing plate 15 can be moved to the right in FIG. Therefore, the punch cassette 9 is in a free state and can be pulled out to the right in FIGS. 1 and 2. Next, a new punch cassette 9 to be replaced is mounted in the punch holder 1 by moving horizontally through the parallel groove 12 and is pushed in until its rear end contacts the punch holder 1. Next, in FIG. 3, the pressing plate 15 is moved to the left and the clamp lever 18 is rotated clockwise, so that the pressing plate 15 is rotated by the bolt 17.
Contacts the open end surface of the punch cassette 9 and restrains the longitudinal movement of the punch holder 1 of the punch cassette 9 to form a fixed state. On the other hand, in order to replace the die cassette 10, when the lever 39 is rotated by 180 °, the rotary shaft 31 is rotated in FIG. 5, and the pin 36 provided at the tip portion is rotated to move the position downward. To do. Since the pin 36 is engaged with the groove 35 provided in the location pin 34, the location pin 34 is also lowered by the rotation of the rotary shaft 31, and the upper end of the location pin 34 is disengaged from the hole 33 provided in the die cassette 10. Cassette 10 becomes free. Therefore, the die cassette 10 can be pulled out to the right in FIGS. 1, 4, and 5. In this case, since the handle 30 is provided, the die cassette 10 can be pulled out easily. Next, a new die cassette 10 to be replaced is mounted in the die holder 2 by moving horizontally through the groove formed by the set plate 29, and is pushed until the rear end contacts the die holder 2. Next, when the lever 39 shown in FIG. 5 is rotated 180 ° in the opposite direction,
The rotation of the rotary shaft 31 causes the pin 36 to push up the location pin 34 and fit into the hole 33 provided in the die cassette 10 to restrain the longitudinal movement of the die holder 2 of the die cassette 10.
Form a fixed state. As described above, the punch cassette 9 and the die cassette 10 can be exchanged, and the next punching process can be continuously executed.

In this embodiment, an example in which the punch cassette and the die cassette are respectively provided with one punch and a die, but the same punch cassette and die cassette are provided with a plurality of punches and dies, respectively. It is the same. Further, the engaging / disengaging means having the function of restraining or allowing the horizontal movement of the punch cassette and the die cassette is not limited to the one shown in the present embodiment, and other known engaging / disengaging means can be applied. Furthermore, the cross-sectional shape of the punch and die can be circular, square, or any other geometrical shape, and it is obvious that the punch and die can be used for drawing or other processing besides drilling. .

[Effect of device]

Since the present invention has the configuration and operation as described above, the following effects can be expected.

(1) With the U-shaped punch / die set mounted on the press table, the punch and die can be exchanged easily and in a short time, and the setup time can be greatly shortened.

(2) In connection with the above (1), the working time of the main body such as drilling can be increased, the operating rate of the press can be greatly improved, and the productivity can be improved.

(3) Even in the high-mix low-volume production system, work efficiency can be significantly improved.

[Brief description of drawings]

1 to 3 are partially omitted longitudinal sectional views, partially omitted plan views and right side views, respectively, showing an embodiment of the present invention, and FIG. 4 is a view taken along the line AA in FIG. 1 and FIG. Is B in FIG.
It is a B-line sectional view. 1: Punch holder, 2: Die holder, 9: Punch cassette, 10: Die cassette, 15: Presser plate, 21: Punch, 27: Die, 31: Rotation axis, 34: Location pin.

Claims (1)

(57) [Scope of utility model registration request] 1. A punch holder and a die holder, which are opposed to each other with a space therebetween, are opened at one end and the other ends are integrally joined to each other to form a substantially U-shape, and at least one is provided in the vicinity of the open ends of the punch holder and the die holder. In a U-shaped punch die set provided with a pair of punch dies, a punch cassette and a punch holder each having a punch intervening in a vertically slidable manner, and a die cassette and a die holder are respectively provided at the inner end portions. And a pressing plate is detachably provided on the open end side of the punch cassette and the punch holder, and a location pin is provided near the open end of the die holder so as to be vertically retractable in the die cassette. The punch cassette and the die cassette are formed so as to restrain and allow the horizontal movement, and the punch holder and the die cassette are formed. U-shaped punch-die set, characterized in that provided detachably near the open end of the fine die holder.