JPS6243612Y2 - - Google Patents

Description

[Detailed description of the invention] This invention punches out a plate material, especially a soft metal plate with large elongation, a sheet of polymeric material, a film, etc., using a punch and a die, and then presses the punched product down with the punch to form the punched hole in the die. The present invention provides a plate material punching/insertion device that reliably inserts the plate material into the holding member located at the lower part.

Conventionally, when punching a plate material with a punch and die and inserting the punched product into a holding member located at the bottom of the die, as shown in FIGS. 1 to 4,
A punch 1 having a cutting edge portion 1a and a tapered relief portion 1b, a cutting edge hole 2a and a relief larger than the cutting edge hole 2a to prevent interference with the punch 1 when the punch 1 is inserted. Die 2 with hole 2b
Then, the plate 3 on the die 2 is punched into a predetermined shape using the cutting edge 1a of the punch 1 and the cutting edge hole 2a of the die 2, and the punched product 3' is punched out on the punch 1.
is inserted into the insertion hole 4a of the holding member 4 located below the relief hole 2b of the die 2.

However, with such a conventional device, when a plate material 3 is punched as shown in FIG. 1, due to eccentricity between the punch 1 and the cutting edge hole 2a, or deterioration of sharpness, etc. At the same time, they are no longer cut, and a part A that is cut first and a part B that is cut later occur, and the part A that is cut first is the part 9 that is cut later.
When the punch 1 descends further and the part B that will be cut later is cut, the part A that was cut first falls further and the product 3' tilts significantly, as shown in Figure 2. In this state, if the punch 1 is lowered to push the product 3' and insert it into the holding member 4, the product 3' will be inserted into the insertion hole 4a in a bent state as shown in FIG. It will be a good product. In addition, when punching two sheets 3 stacked, the lower product 3', that is, the one to be cut first, is already in the state shown in FIG. 2 when the upper product 3' is in the state shown in FIG. This results in worse conditions than in the case of punching out one sheet, and the lower product may end up being inserted into the insertion hole 4a upside down.

Furthermore, if the small hole 4b passes through the insertion hole 4a of the holding member 4 as shown in FIG. Since the product 3' cannot slide in the direction of arrow A, the appearance of the product 3' becomes worse. In particular, such problems are likely to occur when the plate material is made of a highly elongated metal or polymeric material.

The present invention solves these conventional problems, and the plate material punching and inserting device according to the present invention will be described below with reference to the drawings of FIGS. 6 to 9.

As shown in FIGS. 6 to 9, the plate material punching and insertion device according to the present invention has almost the same structure as the conventional plate material punching and insertion device explained in FIGS. 1 to 5, and in the present invention, The punching hole of the die 2 is composed of a cutting edge hole 2a and a relief hole 2b larger than the cutting edge hole 2a, and the size of the relief hole 2b is made smaller than the size of the punched product 3'. For example, if the diameter of the product 3' is about 100μ larger than the diameter of the cutting edge hole 2a, it will be about 50μ, and if it is about 50μ larger, it will be about 25μ.
The diameter of b is made larger than the diameter of the cutting edge hole 2a. That is, when a plate material 3 is generally punched out, for example, in a circular shape, the diameter of the punched product 3' is determined by the die 2.
is larger than the diameter of the cutting edge hole 2b. This tendency becomes stronger as the elongation of the plate material 3 increases, as the thickness of the plate 3 decreases, and as the clearance between the punch 1 and the die 2 increases. For example, if the diameter of the cutting edge hole 2a of the die 2 is 7 mm and the clearance between the punch 1 and the die 2 is 10μ, if the plate material 3 is made of a soft material such as fluorine resin and has a thickness of about 100μ, it will not be punched. The diameter of the product is approximately 100 μm larger than the diameter of the cutting edge hole 2a of the die 2. Furthermore, if the material is relatively hard such as thermosetting resin, the size will be about 50μ.

According to the device of the present invention having the above configuration, as shown in FIG. 6, even if a portion A is cut first and a portion B is cut later, as in the conventional case, the portion A cut first is the escape hole 2b. Since the product 3' is in contact with the product 3', it does not descend as freely as in the past, and even when the portion B that will be cut later is cut, the product 3' tilts only slightly as shown in FIG. For example, even if the product 3' separates from the escape hole 2b in one part due to a large inclination, it will strongly bite into the escape hole 2b in other parts.
It does not fall freely in the escape hole 2b as in the conventional case, but stops in an inclined state.

Then, when the punch 1 further descends, the product 3' is pushed by the punch 1 and its inclination is corrected.
As shown in the figure, when the entire surface touches the tip of the punch 1 and the punch 1 is further lowered, the product 3' has already been tilted in FIG. 8, so the holding member 4 is inserted as shown in FIG. The punch 1 is inserted securely into the hole 4a, and since the diameter of the escape hole 2b is larger than the diameter of the cutting edge hole 2a, the punch 1 and the escape hole 2b do not come into contact with each other, so the punch is not damaged.

As described above, the plate material punching and insertion device of the present invention has the following features:
Since the product punched by the die and punch will not freely fall through the relief hole of the die, the product can be securely held in place not only when punching one plate but also when punching two plates. can be inserted into the
Further, the punch will not be damaged due to contact with the escape hole. Moreover, since it has a simple structure, it can be easily realized at low cost, and has extremely high practical value.

In addition, it can be used to handle materials that are difficult to cut due to their large elongation, and even if the holding member has the structure shown in Figure 5, the product is inserted with its entire surface in close contact with the punch, so there is no need to insert it at all. No mistakes occur.

[Brief explanation of the drawing]

1 to 4 are cross-sectional views showing the operation of a conventional sheet material punching and insertion device, FIG. 5 is a sectional view showing the main parts of another conventional sheet material punching and insertion device, and FIGS. FIG. 3 is a sectional view showing the operation of the plate material punching and inserting device according to an embodiment of the invention. 1... Punch, 2... Die, 2a... Cutting edge hole, 2b... Relief hole, 3... Plate material, 3'... Product, 4... Holding member.

Claims (1)

[Scope of utility model registration request] In a plate material punching/insertion device that punches a plate material using a punch and a die, presses the punched product with the punch, and inserts it into a holding member located below the die, the punching hole of the die is connected to the cutting edge hole and the cutting edge hole. and an escape hole formed from the terminal end of the die to the surface facing the holding member of the die, and the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that the dimensions of the escape hole are set such that The size of the hole is made larger than that of the hole, and the size of the product punched from the cutting edge hole of the die is made smaller than the size of the product punched from the cutting edge hole of the die, so that the product punched from the cutting edge hole of the die is bitten into the escape hole. A plate material punching and inserting device configured to guide the plate material to the holding member.