JPH0429997Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting device mainly used for cutting a workpiece.

[Conventional technology]

Conventionally, when dividing a workpiece into a plurality of pieces, a method as shown in FIG. 4, for example, has been adopted. In this method, a workpiece A is cut with a saw blade 20 provided on a machine tool, such as a saw blade. However, compared to press working, this dividing method not only requires a large amount of processing time, but also has disadvantages in that it is less accurate and generates cutting dust.

Therefore, as a solution to the above problems, Japanese Utility Model Application Publication No. 164721/1983 and Japanese Utility Model Application No. 59-16472
As disclosed in Japanese Patent Application Laid-open No. 162223 and Japanese Patent Application Laid-open No. 145048/1987, an integral blade member has a sharp part at the tip and this sharp part is formed in the direction of the parting line of the workpiece. Therefore, an apparatus for cutting a workpiece placed on a cutting table has been proposed previously.

[The problem that the idea attempts to solve]

However, with the conventional structure described above, if a situation occurs in which only the sharp portion on one side in the direction of the dividing line is worn out, the entire blade member that is integrated in the direction of the dividing line must be replaced. However, the repairability is getting worse. Furthermore, since the workpiece is completely divided, depending on the workpiece, it may be difficult to transport the workpiece to the next process after the division. moreover,
There is a problem in that it is difficult to remove the divided workpiece remaining between the cutter member and the dividing table, and this removal operation is also dangerous.

[Means to solve the problem]

In order to solve the above-mentioned problems, the cutting device of the present invention is such that at least one of the upper mold part and the lower mold part arranged opposite to each other is movable in opposite directions, and the upper mold part and the lower mold part are are each equipped with a cutter member, and a sharp part is formed at the tip of each of these cutter members in the direction of the dividing line of the workpiece, and relative movement of the upper die part and the lower die part in the opposing direction In a cutting device in which a workpiece is sandwiched between the sharp parts of double-edged members, at least one of the cutter members of the upper mold part and the lower mold part has independent sharp columnar members extending in the direction of the cutting line of the workpiece. A plurality of sharp columnar members are arranged in parallel, and the sharp portion of this sharp columnar member is characterized in that the tip portion is formed so as to converge into a point shape.

[Effect]

According to the above structure, at least one of the cutter members of the upper mold part and the lower mold part is composed of a plurality of independent sharp columnar members arranged in parallel in the direction of the parting line of the workpiece. In this one blade member, even if a situation arises in which only the sharp part of the sharp columnar member on one side in the direction of the dividing line is worn out, it is possible to replace only the sharp columnar member on one side. , it is possible to restore the cutting function of one of the blade members as a whole. In addition, the workpiece processed by the cutting device is connected in a state where it can be easily separated without being completely separated due to the structure of the cutter member of the upper mold part and the lower mold part as described above. It becomes ivy. Therefore, the workpiece can be safely removed from the cutting device, and the workpiece can be easily transported during removal.

〔Example〕

The cutting device according to the present invention consists of an upper mold part 1 and a lower mold part 2, as shown in FIG. 1a. A die plate 3 is placed on the die holder 9 in the lower mold part 2, and punch holding holes 4 are arranged in this die plate 3 along the dividing line of the workpiece A, and each hole is inserted through the die plate 3. It is perforated in the state. Sharp columnar members 8 having a sharpened portion at one end shown in FIG. 3a are fitted into the punch holding holes 4, respectively, and sharp columnar members 8 serving as lower punches are inserted into the punch holding holes 4.
It consists of A stripper plate 5 is installed above the die plate 3 via a spring 6, and normally a constant gap is maintained between the die plate 3 and the stripper plate 5. The stripper plate 5 has punch guide holes 7 corresponding to the punch holding holes 4 and having a larger diameter than the punch holding holes 4.
They are provided concentrically and penetrating each other. These punch guide holes 7 are arranged along the dividing line of the workpiece A, similarly to the punch holding holes 4.

On the other hand, the punch holder 1 in the upper mold part 1
A punch plate 11 is fixed to the lower surface of the punch plate 1, and a contact pin 13 and an upper punch 12 are suspended from the lower surface of the punch plate 11.
Note that the upper punch 12 is schematically shown in the figure. In this embodiment, the upper punch 1
2, as shown in FIG. 1b, the cutter member 14
is provided. As shown in FIG. 3b, this cutter member 14 is provided with two sharp points spaced apart from each other by a predetermined distance.

The upper mold part 1 and the lower mold part 2 are arranged so that the workpiece A set therebetween can be held between the blade member 14 which is the upper punch and the sharp columnar member group 8 which is the lower punch. It is set in.

In the above configuration, when the upper mold part 1 descends, the stripper plate 5 of the lower mold part 2 is moved by the contact pin 13 hanging from the lower surface of the punch plate 11.
is pushed down against the bias of the spring 6.
At the same time, the workpiece A placed on the stripper plate 5 descends together with the stripper plate 5 while being pressed by the upper punch 12, that is, the cutter member 14. As the stripper plate 5 descends, the workpiece A gradually becomes a sharp columnar member group 8.
When the stripper plate 5 approaches the die plate 3, it is sandwiched between the cutter member 14 and the group of sharp columnar members 8.

Here, in the group of sharp columnar members 8 arranged in parallel in the dividing line direction, if a situation occurs in which only the sharp portion of the sharp columnar member 8 on one side is worn out, the sharp columnar member 8 on the one side By replacing only the sharp columnar member group 8, the dividing function of the group of sharp columnar members 8 as a whole can be restored. Therefore, this cutting device has good repairability.

Moreover, since the sharp columnar member 8 is formed so that the tip of the sharp part converges into a point, the workpiece A processed by the cutting device is not completely cut, but only by a slight force. are connected in a separable manner. Therefore, the workpiece A can be safely removed from the cutting device, and the workpiece A can be easily transported during removal.

Note that the combination of the upper punch 12 and the lower punch in the above-mentioned cutting device is not limited to the above-mentioned combination, but as shown in FIG.
2. Both the lower punch and the sharp columnar member 8 shown in FIG. 3a
A plurality of sharp columnar member groups 8 may be provided.

Further, as shown in FIG. 3c, the blade member 14 may be a blade member 15 provided with one sharp portion, or a blade member provided with three or more pointed portions.

[Effect of idea]

As described above, in the cutting device of the present invention, at least one of the cutter members of the upper mold part and the lower mold part has a plurality of independent sharp columnar members arranged in parallel in the direction of the cutting line of the workpiece. The sharp portion of this sharp columnar member is configured such that its tip portion converges into a point.

As a result, even if, for example, only the sharp part of the sharp columnar member on one side in the direction of the dividing line is worn out in one of the cutter members made of independent sharp columnar members, By replacing only the sharp columnar member, the cutting function of one of the blade members as a whole can be restored. Therefore, repairability is good. In addition, the workpieces processed by the cutting device are not completely separated but are connected in a state where they can be easily separated, so the workpieces can be safely removed from the cutting device. In addition, it is possible to easily transport the workpieces processed by the cutting device.

[Brief explanation of drawings]

FIG. 1a is a longitudinal sectional view showing an embodiment of the present invention;
Figure b is a vertical sectional view specifically showing the upper punch in Figure a, Figure 2 is a vertical sectional view showing another embodiment of the present invention, and Figures 3 a to c are respectively the upper punch and the lower punch. FIG. 4 is an explanatory diagram showing a conventional example. 1 is the upper mold part, 2 is the lower mold part, 3 is the die plate,
4 is a punch holding hole, 5 is a stripper plate, 6
is a spring, 7 is a punch guide hole, 8 is a sharp columnar member, 8... is a group of sharp columnar members (lower punch), 9
1 is a die holder, 10 is a punch holder, 11 is a punch plate, 12 is an upper punch, 13 is a contact pin, and 14 and 15 are blade members.

Claims (1)

[Claims for Utility Model Registration] At least one of an upper mold part and a lower mold part arranged opposite to each other is movable in opposite directions, and each of the upper mold part and the lower mold part is provided with a cutter member, and A sharp part is formed at the tip of the cutter member in the direction of the parting line of the workpiece, and due to the relative movement of the upper mold part and the lower mold part in the opposing direction, the sharp part of the double-edged member is formed. In the cutting device for sandwiching the workpiece, at least one of the cutter members of the upper mold part and the lower mold part is composed of a plurality of independent sharp columnar members arranged in parallel in the direction of the cutting line of the workpiece. , a cutting device characterized in that the sharp portion of the sharp columnar member is formed such that the tip thereof converges into a point shape.