JPS5922905Y2 - Material cutting knife mounting device for metal processing machinery - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a material cutting knife attachment device that is installed in a metal processing machine such as a hammer for forming bolts, nuts, or various other parts.

If the movable knife installed across the end of the tile becomes worn or damaged, it is necessary to stop the machine and replace it with a new movable knife. Generally, a single mounting plate 50 is provided with a round hole 52 into which a disc-shaped knife member 51 is fitted, and the knife member 51 is fitted into the round hole 52 integrally by shrink fitting. However, once the knife member was shrink-fitted, it could not be removed, so if only the knife member was worn out or damaged, the only option was to replace the entire knife, including the mounting plate.

Therefore, the mounting plate is wasted, and the knife part 53 of the knife member is unevenly worn only in a specific part, although it can be used sufficiently if the angle is changed and the direction is changed.
It is very uneconomical because even the knife parts are disposed of all at once, and replacing the entire mounting plate requires a great deal of effort and time, requiring the machine to be stopped for a long time. However, there was a drawback that production efficiency was unavoidable.

Therefore, in this invention, the knife mounting plate and the knife member are made removable so that they are supported by a fitting step, and the fitting position and angle can be changed freely, thereby eliminating the above-mentioned drawbacks of the conventional method. It is something.

The details will be explained below with reference to the drawings.

The material cutting knife attachment device of the present invention intermittently feeds out a material 1 made of a continuous metal round bar from the tip opening 2a of a quill 2, and each time the material 1 is fed out, the quill tip rj
This is a device for cutting to a fixed size with a movable knife 3 that moves forward and backward across 2a, and can fit and support the outer peripheral half and one side of the knife member 3a on a knife mounting plate 5 attached to a knife holder 4. It is characterized in that a fitting stepped portion 5a is provided, and four-way grooves 7 for fitting the mounting screw 6 to the knife member 3a are provided vertically opposite each other at the tip of the knife mounting plate 5.

In FIGS. 1 and 2, when a material 1 is sent out through a tunnel guide by a feeding device (not shown) consisting of a pair of upper and lower feeding rolls so as to protrude from the tip opening 2a of the quill 2, the tip of the material is used for dimension regulation. The receiver is stopped when it hits the stopper 8.

Then, the knife holder 4 moves from left to right, and the movable knife 3 attached thereto crosses the quill tip opening 2a, so that the material is cut into a fixed size at that moment.

The movable knife 3 has a circular hole 3b formed in the center of the knife member 3a, and the material 1 passes through the circular hole 3b at the same time as being fed out, and in this state, the knife moves to the right to cut the material.

The cut material 1a is inserted into the round hole 3a at the same time as it is cut, and is pushed to the right and carried to the very front of the die 9, where the punch 10 provided at the opposite position rushes toward the die 9 and cuts the material. Forging is performed by press-fitting into the die 9.

The knife member 3a has a disk shape and has a round hole 3b in the center and a screw hole 3C around the round hole 3b.
A plurality of C's are provided at equal intervals around the circumference or at appropriate intervals, with at least two pairs, upper and lower.

Alternatively, a semicircular shape as shown in FIG. 6 can also be used.

The fitting stepped portion 5a is formed by hollowing out one side of the plate surface of the knife mounting plate 5 in a semicircular arc shape to form a semicircular step, and applying a disk or semicircular five member 3a to the step from the rear or front. Align the screw hole 3C with the recessed groove 7 and fix it with the stopcock 6.

The knife 3b' of the round hole 3b gradually wears out because the cutting action part is located at the center of the rear half of the quill tip opening 2a, but it can be removed and turned over as is, or turned 180 degrees. By attaching it, the entire circumference of the front and back can be used by sequentially moving the cutting action parts.

As explained below, in this invention, the knife mounting plate is provided with a fitting step that can fit and support the outer half and one side of the knife member, and the knife member is fixed with a set screw. Therefore, it can be detached and removed freely, and since it can be installed at different angles, the cutting action part can be sequentially changed and used, and when replacing it, only the knife member needs to be replaced, so there is no waste, and it is economical. It is large in size, has a simple structure, is durable, and can be implemented at low cost.

[Brief explanation of drawings]

Figure 1 is a front view of the cutting device of a heading machine implementing the present invention, Figure 2 is a sectional view taken along line A-A in Figure 1, Figure 3 is a front view seen from the tip of the movable knife, Figure 4 is an exploded front view of the mounting plate and knife member, and Figure 5 is Figure 4 B-B.
6 is a front view of another embodiment of the knife member, and FIG. 7 is a front view of a conventional movable knife. 1... Material, 2... Tile, 3... Moving knife,
4... Knife holder, 5... Knife mounting plate, 6...
...Washi, 7...Monnin groove, 2a...tip mouth, 3a...
・Knife parts.

Claims (1)

[Scope of utility model registration request] A material consisting of a continuous metal round bar is used as the tip L1 of the tile.
This is a device that cuts the tile into a fixed size using a moving knife that is sent out intermittently and moves back and forth across the tile end opening each time it is sent out. A fitting stepped portion capable of fitting and supporting one side portion of the knife member is provided, and four-way grooves for supporting fitting screws to the knife member are provided vertically opposite each other at the tip of the knife mounting plate. Material cutting knife mounting device for metal processing machines.