JPS5852024Y2 - Hinge device in saw machine - Google Patents

Description

[Detailed description of the invention] This invention is suitable for horizontal bandsaw machines, for example, and is a hinge device for a saw blade that rotates in the vertical direction using a hinge provided on one side of the base as a fulcrum. It is related to.

Conventionally, in order to take over the hinge portion of a saw blade or housing, both sides of the hinge pin that passed through the hinge pin receiver of the frame were rotatably supported by hinge brackets installed on the base.

However, the frame of a saw machine weighs, for example, several tens of kilograms to 100 kilograms.
9 or more, which requires a great deal of time and effort to assemble, and a gap is provided between the hinge pin and the hinge pin receiver to facilitate assembly. This not only made the position of the saw blade unstable in the longitudinal direction, but also caused surface distortion due to lateral vibration, which had a significant negative impact on the material cutting accuracy of the saw blade.

This invention effectively solves these conventional problems, and its purpose is to provide a hinge device for a saw machine that holds the saw blade housing in a stable state and that is extremely easy to assemble. It provides:

A preferred embodiment of this invention will be described below with reference to the accompanying drawings.

Fig. 1 shows a general horizontal bandsaw machine that implements the hinge device according to this invention. 3 and a vice mechanism comprising a fixed vice jaw 5a and a movable vice jaw 5b for clamping and fixing the workpiece M placed and supported on the material support table 3.

Also on the base 1 is a C-shaped saw blade 7.
is rotatably supported in the vertical direction via a hinge device 9, which is the gist of this invention.

A drive wheel 13 is rotatably installed inside one housing part 11 of the saw blade housing 7 via a drive shaft 15, and a rotating shaft 19 is installed in the other housing part 17. A driven wheel 21 is rotatably installed inside the shaft.

A loop-shaped band saw blade 23 (cutting tool) is rotated between the drive wheel 13 and the driven wheel 21 .

Note that when cutting the workpiece M, in order to vertically rotate the saw blade and housing 7 around the hinge shaft (described later) of the hinge device 9, the saw blade and housing 7 must be positioned at an appropriate position. The tip of a piston rod 27 of a drive device 25 such as a hydraulic cylinder is pivotally connected to the drive device 25, and the drive device 25 is operated to move up and down.

As shown in FIGS. 2 to 4, the hinge device 9 fixes a hinge holder 29 on the base 1, and on the hinge holder 29 both ends of a hinge shaft 31, which will be described later, are mounted. block member 3 that supports the part with a V-shaped holding surface 33
5a and 35b are integrally attached by welding or the like.

V-shaped holding surface 33 of the block members 35a, 35b
There is a hinge hole 37 at the bottom of one end of the saw blade and housing 7.
A hinge shaft 31 housed in is mounted, and the hinge shaft 31 is connected to the block members 35a, 35b and the hinge via a reamer bolt 39 that passes through the hinge holder 29, the flock members 35a, 35b. It is fixed to a cradle 29.

Moreover, the block member 35a in the hinge shaft 31
, 35b, a portion 41 of the outer periphery that comes into contact with the holding surface 33,
A surface grinding process is performed so that the hinge shaft 31 is held in even contact with the holding surface 33, and as a result, the hinge shaft 31
It is completely fixed to the block member without rotation.

Between the hinge shaft 31 and the hinge hole 31 of the saw blade I, there is a rotation support member 4 such as metal.
3 is interposed therebetween, so that the saw blade housing 1 can smoothly rotate in the vertical direction as viewed in FIG. 1 about the hinge shaft 31.

A regulating plate 47 is rotatably fitted into one end of the hinge shaft 31 protruding from the hinge hole 3γ of the saw blade housing 7 via a thrust bearing 45. Bolt 4 on the back of Uzing γ
9 and the hinge shaft 3
1 and is held by a collar 51 and a nut 53 fitted into one end.

The regulation plate 4γ regulates movement of the saw blade housing l in the longitudinal direction of the hinge shaft 31, and always rotates integrally with the saw blade and the housing γ.

In this invention, as described above, the hinge shaft 31, the hinge receiver on the base 1 is the base 29, and the block member 35a,
35b through the reamer bolt 39, the saw blade housing T rotates smoothly around the hinge shaft 31, and the saw blade housing γ is completely fixed to the hinge shaft 31 by the regulating plate 47. Since it is fixedly positioned at one end of the base 1, it will not move or shift in the front-back direction behind the base 1.

FIG. 5 shows a second embodiment of the fixed portion of the hinge shaft 31, in which the hinge receiver is made by fixing an L-shaped block member 55 on the base 29 by welding or the like, and attaching the hinge to the flock member 55. Place the shaft 31 on the hinge shaft 31 and insert the reamer bolt 5γ8 from each 90 degree position.
, 51b are inserted and fixed.

Also in this embodiment, the hinge shaft 31 can be securely fixed to the hinge pedestal 29 and the block member 55.

This invention securely fixes the hinge shaft 31 accommodated in the hinge hole 37 of the saw blade Uzing γ to the hinge holder 29 fixed on the base 1 as described above. regulation play at one longitudinal end of)
47 to restrict the movement of the saw blade, .

■ Saw blade: It is possible to reliably prevent the front and back movement of the Uzing γ and the distortion of the surface due to lateral vibration, etc., and the cutting accuracy of the workpiece M can be significantly improved.

■ Since the configuration is relatively simple, assembly work and maintenance are extremely easy.

However, this invention is not limited to the above-mentioned embodiments, and other embodiments are also possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a horizontal bandsaw machine implementing this invention, FIG. 2 is a partially vertical side view of the hinge device 9, and FIG. 3 is a vertical side view taken along the line ■-■ in FIG. , FIG. 4 is a side view taken along the line IV-fV in FIG. 2, and FIG. 5 is an explanatory diagram showing another embodiment. (Explanation of main symbols in the drawings), 1... base, l...
・Saw blade housing, 31... Hinge shaft, 33・
...Holding surface, 29...Hinge cradle, 4γ...Regulation plate.

Claims (1)

[Scope of utility model registration request] On the base 1, one end of the saw blade housing T is pivoted on the base 1, and a saw blade is mounted so as to be rotatable in the vertical direction. A hinge cradle 29 having a holding surface 33 for the hinge shaft 31 is mounted and fixed on the hinge cradle 29, and a hinge rotatably housed below one end of the saw blade 7 is mounted on the hinge cradle 29. While the shaft 331 is integrally fixed, the saw blade
- A hinge device for a saw machine, characterized in that a regulation plate 47 is provided for regulating movement of the housing 7 in the longitudinal direction of the hinge shaft 31.