JPS5932493Y2 - horizontal band saw rock - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a material fixing device for a cutting machine, such as a horizontal band saw, and more specifically relates to improvements in the shape of a material feeding roller and a fixing vise in a horizontal sawing machine with an automatic material feeding method. It is something.

Originally, a horizontal saw machine with an automatic material feeding device functioned as a cutting machine by bundling medium-thick bar materials, automatically feeding and cutting them one after another, and cold-forging them. It is used in the process of preparing a blank for turning, etc., and its characteristics appear.

Therefore, although the reality is that the overwhelming majority of objects to be cut are bundles of bar material with a circular cross section, the configuration of the vise device that fixes the material on a typical horizontal bandsaw machine is such that the bottom surface is horizontal. , both left and right sides were provided vertically, one side had a fixed vice jaw, and the other vice jaw could move toward and away from the fixed side.

While such cross-cutting vise devices are versatile, they cannot be automatically bundled, and furthermore, in the case of band saws, the cut workpiece is generally not located in the center of the left and right driven and driving pulses. , Is the twisting distance of the bandsaw blade different on the left and right sides?
Alternatively, the holding span of the band saw blade is unnecessarily long during operation, resulting in deterioration of tool life and cutting accuracy.

The present invention was developed to overcome the above-mentioned problems, and will be described in detail below with reference to the drawings.

In FIG. 1 showing one embodiment of the present invention, 1 generally shows a horizontal bandsaw machine with an automatic material feeding system, 3 is a machine base, and 5 is a shaft mounted on a part of the machine base (not shown). It is a housing that can be freely swung, and a driven wheel and a driving wheel for rotating the band saw blade 7 are built into both sleeves of the housing.

Reference numeral 9 is called a main body vise, which is provided immediately after the cutting plane formed by swinging of the bandsaw blade, and does not change its position in the front-rear direction.

Reference numeral 11 denotes an abutment, which holds two left and right guide bars 15 between the main body vice and is guided by these two guide bars and reciprocated in the front and back direction by a hydraulic cylinder (not shown). 13 are provided.

As is clear from the figure, the material storage and fixing parts of the main body vise and the material feeding vise have the same structure in the shape of an equilateral triangle, and are guided by grooves provided in the left and right directions. Then, the presser plate 21.23 is connected to the hydraulic cylinder 25.2.
7, it moves up and down to fix and release the material to be cut.

29 is a material holder installed at the rear of the machine base, and as is clear from the figure, it is made up of multiple rollers arranged in a ■-shape.
Two units are illustrated in the figure.

Reference numeral 31 is called a cut material receiver, which receives falling cut materials and guides them to a storage box placed in front of the machine.

As shown in FIG. 1 and clear from the above description, in this embodiment, both the main body, the material feeding vise, and the V roller provided at the rear have an upwardly expanding shape to accommodate the material when viewed from the front. They have the same shape and size, and their lowest point is located in the center of the left and right wheel axles when the band saw blade swings to a horizontal position.

Figure 2 shows a further improved embodiment of this embodiment, in which the main body, material feeding vise, and ■roller are divided into left and right halves at the center, and the shaft supported on the machine base is rotated. By meshing the left-handed and right-handed screws with the left-handed and right-handed female screws provided on the left and right vise blocks, the left-right dimensions of the shape that accommodates the material can be adjusted while maintaining the left-right center of the vise, etc. It is something that can be changed.

Figure 3 shows a partially improved version of the presser plate 2 described above.
1.23, a roller that is pressed downward by a hydraulic cylinder or the like is provided at a position slightly away from the main body, the material feeding vise, and the (1) roller on the upstream side in the material feeding direction.

Figure 4 shows that the above-mentioned upwardly expanding shape and VD-ra are not necessarily composed of symmetrical straight lines like the letter ■, but can also be curved or asymmetrical. This is what is shown.

Figure 5 is an explanatory diagram regarding the use of the expression "automatic bundling" in the above explanation. When round materials are dropped one by one from the material supply table, they are automatically bundled by the upward-spreading material feeding roller. This shows that it can be bundled into a shape.

With the above configuration, when bundling and cutting is performed using the conventional so-called square material feeding rollers, material feeding, and main body vise device, it is possible to cut the bundle into squares such as 4 pieces, 3 tiers, or 12 pieces in total. Before and after the long pieces of wood, workers must use a lever to organize the material that they want to place between the two lower rows, so that one of the materials is placed directly above the lower row. However, as shown in Figure 5, since the material is automatically arranged into a bundle shape, the original mission of an automatic feeding saw machine, which is highly efficient cutting, can be performed with labor savings. In this case, the cutting operation is performed at the center of both the left and right wheels, which is effective in maintaining tool life and cutting accuracy.In addition, the load on the saw blade is reduced by moving from the upper stage to the lower stage. , it does not assist in the bending that occurs in the upper stage, but rather has the effect of correcting the bending.

As can be understood from the above description of the embodiments, the gist of the present invention is that driven and drive wheels are rotatably mounted on both sides of a housing that is mounted on a base so that it can be raised and lowered. The band saw blade for cutting the material fixed on the table is hung around the driven track drive wheel to form a horizontal band saw machine, and the main body vise is fixed on the base and is movable forward and backward behind the main body vise. The material storage and fixing part of the material feeding vise is formed into a substantially equilateral triangular ■ shape expanded upward, and a presser member for pressing and fixing the material from above to the material storage and fixing part is attached to the main body vise and the material feeding vise. The material feeding vise is provided so as to be movable up and down, and the lowest point of the material storage fixing part is located at the center of the driven and driving wheel when the band saw blade is horizontal, and is located at the rear of the material feeding vise. Since it is made up of a material holder with a plurality of rollers arranged in a ■-shape to support the material, the bars are held in a triangular bundle over the whole,
By simply placing the bars between the rollers on the material holder, the bars can be stacked, and the uppermost parts of the multiple bars at the top are automatically aligned horizontally, eliminating the need for special stacking of the bars. It is something.

Further, when the bar material is fed by the material feeding vise, there is little frictional resistance, and the bundled bar materials can be held in an aligned state and smooth material feeding can be performed.

In particular, according to the present invention, the amount of twisting on both sides of the band saw blade is approximately equal, so there is no need to forcefully twist the band saw blade, and the life of the band saw blade is extended.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an automatic material feeding type bandsaw machine shown as an example of implementing the present invention. FIG. 2 is an explanatory diagram of a mechanism in which an upwardly expanding vice can be increased and decreased in the left and right directions, as one embodiment of the present invention. Figure 3 shows a press roller instead of the press plate of the present invention.
It is an explanatory view showing an example arranged upstream of a roller and a vise for feeding the material. FIG. 4 is a diagram illustrating that the upwardly expanding shape includes a case where the left and right sides are curved lines, and also includes a case where the left and right sides are not symmetrical. FIG. 5 is an explanatory diagram showing the phenomenon of automatic bundling.

Claims (1)

[Scope of utility model registration request] Drive wheels are rotatably mounted on both sides of a housing 5 mounted on the base 3 so as to be able to rise and fall freely, and a band saw blade 7 for cutting the material fixed on the base 3 is attached to the driven wheels. , a horizontal bandsaw machine hung around a drive wheel, the main body vise 9 fixed on the base 3 and the material storage fixing part of the material feeding vise 13 arranged movably back and forth behind the main body vise 9 in the upward direction. A holding member is provided in the shape of an enlarged substantially equilateral triangle and is provided in the main body vise and the material feeding vise 13 so as to be movable up and down for pressing and fixing the material from above to the material accommodating and fixing portion. The lowest point of the housing and fixing part is located at the center of the driven and driving wheels when the bandsaw blade T is horizontal, and the material feeding vice 13
A horizontal bandsaw machine characterized in that a plurality of rollers for supporting the material are arranged in a ■-shape on a material holder 29 arranged at the rear of the machine.