JPH0111383Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism for adjusting the clearance of upper and lower blades of a cutting machine in the material feeding direction.

Figure 1 is a front view of the angle iron cutting machine, with the machine body 1
An upper cutter 6 attached to the lower end of a plate holder 5 of a cutting cylinder 4 facing downward is placed directly above the lower cutter 3 attached to a lower cutter mount 2 on the base. This double edged knife 3,6
The clearance in the material feeding direction is set to an optimal value determined from the material, plate thickness, etc. of the material to be cut. Generally, this type of clearance adjustment method uses a shim (a polished single plate) of the required thickness between the upper cutter 6 and the plate holder 5, as shown in Fig. 2.
This was done by intervening. However, this method requires 30 to 60 minutes of work time for clearance adjustment such as selecting the shim, attaching and detaching the upper cutter 6, and replacing the shim, resulting in a large time loss. In addition, the clearance tends to be non-uniform due to manufacturing errors in the shim and installation errors in the shim and the upper cutter, which causes the problem that the cut surface becomes rough and the product value decreases. or,
It is necessary to produce a large number of shims of different sizes, and storing them becomes a hassle.

This invention was made in view of the above points,
To provide a clearance adjustment device that can steplessly and easily finely adjust the clearance without touching a cutter with a simple configuration.

In order to achieve this purpose, in the clearance adjustment device between the upper and lower cutters in a cutting machine according to the present invention, the lower cutter mount, which has a lower cutter opposed to the upper cutter mounted on the base, is used to adjust the gap between the upper and lower cutters. At the same time, a guide groove is formed at right angles to the direction in which the gap between the upper and lower cutters is adjusted. A prismatic base of an adjustment gib formed integrally with an extending protrusion is slidably and tightly fitted, and a protrusion of the adjustment gib whose prismatic base is fitted onto the base is fitted on the sliding surface with the base of the lower knife mount. A diagonal groove is formed into which the groove is slidably and tightly fitted, a protrusion is fitted into the diagonal groove, and adjustment screws for moving the adjustment gib along the guide groove are screwed onto both sides of the base. It is.

Embodiments of the present invention will be described below based on the drawings. In FIGS. 3 and 4, an upper cutter 6 is attached to the plate holder 5 of the cutting cylinder 4 which is disposed downward on the upper part of the machine body 1, and the lower cutter 3 facing the upper cutter is mounted on the base 8. A pair of brackets 15, 15 protruding from both sides of the base 8.
It is fixed to the tip of a lower cutter mount 9 that is movably guided in the direction of adjusting the clearance a, and an adjustment gib 10 as shown in FIG. 5 is fitted into the lower cutter mount 9 and the base 8. .

As shown in FIG. 5, the adjustment gib 10 is formed by integrally forming a protrusion 12 with a square cross section on the upper surface of a prismatic base 11 with a square cross section and extending obliquely in the longitudinal direction.
This adjustment gib 10 adjusts the prismatic base 11 to the base 8.
The base 8 is slidably and tightly fitted into the guide groove 13 perpendicular to the clearance adjustment direction formed on the sliding surface with the lower knife mount 9, and the base 8 is formed on the sliding surface with the base 8 of the lower knife mount 9. Adjustment gib 1 fitted with prismatic base 11 to
Diagonal groove 14 into which the protruding strip 122 of 0 is slidably and tightly fitted.
is formed, and the protruding strip 12 is slidably and tightly fitted into this diagonal groove 14. The length of the adjustment gib 10 is shorter than the length of the guide groove 13 of the base 8 by the amount of adjustment movement. The adjustment gib 10 is moved by adjusting screws 16, 1 which are screwed into brackets 15, 15 provided on both sides of the base 8.
I'm going at 7.

In FIG. 4, when the adjustment screw 17 is moved backward and the prismatic base body 11 is moved toward the adjustment screw 17 using the adjustment screw 16, the protrusion 12 that fits into the lower knife mount 9 moves to the side shown by the imaginary line. In order to move
The lower knife 3 approaches the upper knife 6, and the clearance a becomes smaller. Conversely, when the adjustment screw 16 is moved back and then the prismatic base 11 is moved toward the adjustment screw 16 using the adjustment screw 17, the protruding strip 12 moves from the imaginary line side to the solid line side, so the lower cutter 3 becomes the upper cutter. 6, the clearance a increases. In this way, when a predetermined clearance is obtained, the adjusting screw being retracted comes into contact with the prismatic base 11, and the adjusting gib 10 is locked to the base 8 with both adjusting screws 16 and 17. As a result, the lower knife mount 9 is also fixed to the base 8 via the adjustment gib 10.

Incidentally, since the advance angle of the protruding strip 12 of the adjustment gib 10 in the clearance adjustment direction is relatively small, fine adjustment of the clearance a is facilitated.

As explained above, according to the present invention, the prismatic base of the adjustment gib is tightly fitted into the guide groove perpendicular to the clearance adjustment direction formed on the base, and the diagonal groove of the lower tool post is tightly fitted into the protrusion. Since the clearance between the upper and lower cutters is adjusted by moving the adjustment gib with the adjustment screw, a desired amount of clearance can be easily secured with a simple configuration. Furthermore, since there is no need to replace or store shims, it is possible to prevent a decline in product value due to uneven clearance, and to efficiently carry out this type of cutting work.

[Brief explanation of the drawing]

Fig. 1 is a front view of the angle iron cutting machine, Fig. 2 is a side view of the same partially cut away and partially cut away, and Fig. 3 is a partially cut away and partially cut away side view showing an embodiment of the present invention. 4 is a view taken along the line A--A in FIG. 3, and FIG. 5 is a perspective view of the adjustment gib. 3...Lower knife, 6...Upper knife, 8...Base,
9...Lower knife mounting stand, 10...Adjustment gib, 11...
...Prismatic base, 12... Protruding strip, 13... Guide groove, 14... Diagonal groove, 16, 17... Adjustment screw.

Claims (1)

[Scope of utility model registration request] A lower cutter mount with a lower cutter attached to face the upper cutter is mounted on the base so that it can move in the direction to adjust the gap between the upper and lower cutters, and a guide groove is provided at right angles to the direction in which the gap between the upper and lower cutters is adjusted. A prismatic base body of an adjustment gib, which is formed by integrally forming a protrusion extending diagonally in the longitudinal direction on the upper surface of a prismatic base body whose length is shorter than the guide groove, is slidably and tightly fitted into the guide groove, The sliding surface of the lower knife mount with the base is formed with a diagonal groove into which the protrusion of the adjustment gib, which is fitted with a prismatic base on the base, is slidably and tightly fitted, and the protrusion is fitted into this diagonal groove, A clearance adjustment device between upper and lower cutters in a cutting machine, characterized in that adjustment screws for moving adjustment gibs along guide grooves are screwed onto each side.