JPS5922904Y2 - 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 installed in a metal processing machine such as a homer that presses bolts, nuts, or their parts, and is installed across the end opening of a tile. If the movable knife worn out or damaged becomes worn or damaged, it can be easily and quickly replaced with a new one with a single touch.In addition, instead of replacing the entire mounting plate in the past, only the disk-shaped knife member can be replaced. It is designed to be replaceable to improve workability and increase production capacity.

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

The material cutting knife attachment device of the present invention intermittently feeds out the material 1 made of a continuous round metal bar from the tip L-]2a of the quill 2, and each time the material 1 is fed out, the material 1 is fed out from the tip L-]2a of the quill 2.
It is a device for cutting to a fixed size with a movable knife 3 that moves forward and backward across the knife holder 4, and a knife mounting plate 5, which is attached to a knife holder 4, is attached to a knife mounting plate 5 that rotates freely about a pivot shaft 6 at one end as a fulcrum. A lubricious presser metal fitting 7 is provided, and arcuate fitting portions 8 and 9 for holding the disk-shaped knife member 3a in a wedge IE shape are formed at opposing portions of the knife mounting plate 5 and the presser metal fitting 7, and the presser metal fitting 7 Holder metal fitting 7 on metal fitting 1 or knife mounting plate 5 side
A fastener 10 is provided for tightening the free end of the knife to the knife mounting plate 5.

In FIGS. 1 and 2, the material 1 is passed through the tunnel guide 11 by a feeding device (not shown) and then passed through the tip opening 2a of the quill 2.
When the tip is fed out, the stopper 12 according to the tip force application law is
be accepted.

Then, the knife holder 4 moves from left to right, and the moving knife 3 crosses the quill tip opening 2a, so that the material is cut to a certain size.

The movable knife 3 has a disk shape with a through hole 3b in the center,
The material passes through the central through hole 3b at the same time as it is fed out,
In this state, the knife moves to the right to cut the material.

[Cut material] At the same time as cutting, a is pushed to the right and stops just before the pusher 13.

Then, when the pusher 13 projects forward, the material 1a is pushed out through the through hole 3b at the center of the knife member 3a, and at this time, it is gripped by a chuck (not shown) that is placed on standby in advance.

In the next operation, the chucked material is carried just before the die 14, where it is delivered to the punch 1 provided at the moon-facing position.
5 rushes toward the die 14 and presses the material.

To replace the knife member 3a with a new one when it is worn or damaged, proceed as follows.

When the fastener 10 of the presser 1% metal fitting 7 is loosened to free the presser metal fitting 1 from the mounting plate 5, the disc-shaped knife member 3a can be easily pulled out from both opposing circular arc fitting parts 8 and 9. Replace with one prepared separately.

If a part is worn out on one side, it may be necessary to refit it by reversing the front and back or changing the mounting angle.

As shown in FIGS. 2 and 3, the fastener 10 is attached to
The free end of the corresponding presser metal fitting 7 is formed into a bifurcated groove 18, and a screw punch 16 is releasably engaged therewith, and then tightened with a tightening nut 19.

Further, as shown in FIG. 4, a fastening rod 20 is provided at the free end of the presser metal fitting 1 and is screwed directly onto the mounting plate 5.

In FIG. 5, the presser metal fitting 7 is tightened to the mounting plate 5 by the fastening rod 22 via the engagement piece 21.

An arcuate fitting part 8 provided at opposing parts of the presser metal fitting 7 and the mounting plate 5
, 9 has four grooves 23 on one side and a convex groove 24 on the other side so as to fit in the convex and concave surfaces of the knife member 3a (Fig. 8).
Alternatively, one step 23' may be removed to form an L-shaped groove 25 in order to facilitate removal to one side (FIG. 8).

The moving knife cuts the material by moving once for each movement of the punch, so if it is continuously operated and the cutting operation is performed without interruption,
Is there a need to replace the knife as it wears out or gets damaged prematurely?
As shown in Figure 0, the disk-shaped knife member 51 was integrally fitted to the single-plate mounting plate 50 by shrink-fitting and could not be removed from the mounting plate, so it was difficult to remove the mounting plate from the knife holder. There was no other option than to remove it and replace the whole thing.

Therefore, not only is the mounting plate wasted, but it takes time to remove and tighten one piece at a time to replace the whole thing, and the machine has to stop operating during that time, resulting in a significant drop in production efficiency. There were certain drawbacks that could not be avoided.

This invention is an improvement on the conventional shortcomings in view of these shortcomings.As mentioned above, the mounting plate attached to the knife holder remains as it is, but the tip is provided with a pivot that can be freely raised and lowered. An arcuate fitting part is provided in the opposing parts of the presser metal fitting and the mounting plate, and a single disc-shaped knife member can be easily and quickly removed or mounted by simply tightening the screws,
Therefore, when replacing due to wear, etc., it can be quickly dealt with, reducing machine down time, and replacement work can be easily done with one touch, greatly improving work efficiency and productivity, and the structure is also comparable. The skewer is simple, durable, and inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the cutting die of the heading machine in which the present invention is implemented, Fig. 2 is a front view taken from line A-A in Fig. 1, and Fig. 3 is an enlarged front view of the knife attachment part. , FIG. 4 is a front view of the knife attachment part of the second embodiment, FIG. 5 is a front view of the knife attachment part of the third embodiment, FIG. 6 is a partial sectional view taken from line C-C in FIG. 3, and FIG. FIG. 3 is a sectional view taken along the line CC, FIGS. 8 and 9 are sectional views showing modified examples of the fitting portion, and FIG. 10 is a front view of a conventional knife mounting plate. 1... Material, 2... Quill, 3... Knife, 4...
...Knife holder 5...Mounting plate, 6...Pivot,
7... Holding metal fitting, 8, 9... Arc fitting part, 10...
- Fastener, 2a... tip opening, 3a... knife member.

Claims (1)

[Scope of claim for utility model registration] A material consisting of a continuous round metal bar as the tip of a tile.
This is a device that cuts the tile into a fixed size with a moving knife that is sent out intermittently and moves back and forth across the tip of the tile each time it is sent out. A presser metal fitting that can freely rotate up and down with the knife mounting plate and the presser metal fitting as a fulcrum is provided, and an arcuate fitting portion that holds the disk-shaped fife member in a pinching manner is formed at the opposing portion of the knife mounting plate and the presser metal fitting. , a material cutting knife attachment device for a metal cutting machine, characterized in that a fastener for tightening the free end of the presser metal fitting to the knife mounting plate is provided on the side of the presser metal fitting or the knife mounting plate.