JPH0310709A - Corner shearing machine - Google Patents

Abstract

PURPOSE:To reduce vibration and noise without mounting any vibration absorbing material, acoustic material or the like by constituting corner shearing machine component members such as a frame, cover plate, digital scale stand, chuter or the like of a vibration attenuating steel plate. CONSTITUTION:A frame 1, front cover plate 3 and chuter 9 are constituted of a vibration attenuating steel plate, so that vibration and noise in the operation of a corner shearing machine are restrained, and collision sound in dropping cut-off pieces is restrained. The slider of a work stopper 11, the case of a rotary encoder and a stand 47 are constituted of a vibration attenuating steel plate so that the transmission of vibration is restrained, the detecting accuracy and durability are improved and hydraulic operational noise is reduced because of the oil tank 53 of a hydraulic unit 51 constituted of the same steel plate. Said vibration attenuating steel plate is formed in two laminated steel plates sandwiching thin visco-elastic resin so that the visco-elastic resin is deformed in shearing by the bending deformation of vibration to convert the vibrational energy to the thermal energy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to a corner shearing machine generally referred to as a corner shear, and particularly to a corner shearing machine that is improved with respect to vibration and noise.

(Prior Art) A corner shearing machine includes a frame, a cover plate forming an outer panel of the corner shearing machine, a chute, etc., and conventionally, these are made of general steel.

(Problems to be Solved by the Invention) In conventional corner shearing machines, corner shearing machine constituent members such as frames, cover plates, and shooters are made of general steel materials. The parts vibrate and relatively loud noises are generated due to this vibration.

In particular, since the cover plate is made of a general steel plate, vibrations are transmitted from the frame during corner shearing work and resonate, creating a relatively large noise source, and this noise is a cause of deteriorating the working environment.

To solve this problem, conventionally, a vibration absorbing material or a sound absorbing material such as rubber or sponge is attached to the back surface of the cover plate 1. However, this increases the number of parts of the corner shearing machine and the number of assembly steps.

In addition, in corner shearing machines, when the cut pieces fall into the chute, a loud collision noise is generated.
This significantly worsens the quietness at the work site.

In addition, in corner shearing machines equipped with a digital scale, vibrations during shearing work are transmitted from the frame to the digital scale box via the stand of the digital scale, and this vibration causes deterioration of the durability of the digital scale. ing.

In view of the above-mentioned problems, the present invention is improved so that the frame, cover plate, shooter, digital scale, etc. do not vibrate greatly without increasing the number of parts or assembly man-hours, and eliminates the generation of large vibrations and noise. The purpose is to provide a corner shearing machine.

[Structure of the Invention] (Means for Solving the Problem) According to the present invention, corner shearing machine constituent members such as a frame, a cover plate, a digital scale stand, and a chute are constructed of vibration-damping steel plates. This is achieved by a corner shearing machine that is characterized by:

(Function) According to the above configuration, the frame, the cover plate,
Since the shooter, the stand of the digital scale, etc. are made of vibration-damping steel plates, vibration and noise can be reduced even if no vibration-absorbing material, sound-absorbing material, etc. are attached to these.

(Example) The present invention will be described in detail below with reference to the accompanying drawings.

1 and 2 show one embodiment of a corner shearing machine according to the invention.

In these figures, 1 is the main frame of the corner shearing machine, 3 is the front cover plate, 5 is the work table installed almost horizontally on the frame 1, and 7 is the built-in ram (not shown). Each head is shown.

A ram (not shown) in the head 7 is fitted with an upper blade extending at an angle of 90'' (not shown), and the work table 5 is fitted with an upper blade (also not shown). However, a lower blade with an angle of 90@ is attached, and the upper blade and the lower blade perform corner shearing for corner notches.

The frame 1 and the front cover 3 are each made of a damping steel plate.

As clearly shown in FIG. 3, below the work table 5, a chute 9 for discharging cut pieces from corner shearing is arranged at an angle.
is composed of vibration-damping steel plates.

Two work stoppers 11 are provided on the work table 5. The work stopper 11 is connected to a T-slot 1 provided in the work table 5, as clearly shown in FIG.
3, a slider 15 slidably engaged with the slider 15;
an encoder mounting plate 19 fixed by screws 17 to the encoder mounting plate 19; a bearing case 21 to the encoder mounting plate 19; a pinion shaft 25 rotatably mounted to the encoder mounting plate 19 by a ball bearing 23; Two binions that mesh with the provided rack 27, two operation dials 31 mounted on the pinion shaft 29, a low rotation encoder 33 that detects the amount of rotation of the pinion shaft 25 and the operation dial 31, and a rotary encoder 33 attached to the slider 15. A stopper plate 37 rotatable around an axis 35 and a slider 15
It includes a screw cock 39 for selectively fixing to and a notch pin 41 for positioning.

The cases of the slider 15 and the rotary encoder 33 of the work stopper 11 are each made of a damping steel plate.

The electric signal of the rotary encoder 33 is transmitted to the digital scale box 4 on the work table 5 by a code 43.
Digital scale device built into 5 (not shown)
It is now entered into

As clearly shown in FIGS. 1 and 2, the digital scale box 45 is attached to the upper end of a stand 47 that stands up from the work table 5. A digital display 49 for digitally displaying the positions of the two work stoppers 11 mentioned above is provided on the front surface of the digital scale box 45.

The stand 47 is made of a damping steel plate.

A hydraulic device 51 for driving the ram is built inside the front cover plate 3. As clearly shown in FIGS. 5 and 6, the hydraulic system 51 includes an oil tank 53, an electric hydraulic pump 55 and a control valve 57 mounted on the oil tank 53. 53 is made of a damping steel plate.

The vibration-damping steel plate used in the corner shearing machine according to the present invention may have a laminated structure in which a thin viscoelastic resin is sandwiched between two steel plates, and the viscoelastic resin undergoes shear deformation due to bending deformation due to vibration. As a result, the vibration energy is converted into thermal energy and a vibration damping effect is produced.

In the case of laminated vibration damping steel plates, long continuous welding should be avoided in consideration of the thermal effect on the viscoelastic resin. is set with this in mind, and V-grooves may be provided inside the bent portions of the various plates mentioned above to ensure good bending.

As mentioned above, the frame 1 and the front cover plate 3
are each made of vibration-damping steel plates, so that the vibration-damping effect of the vibration-damping steel plates, in other words, the vibration-damping effect,
Large vibrations of these parts during corner shearing work are suppressed, and noise is also reduced accordingly.

Since the chute 9 is made of a damping steel plate, it is possible to suppress the occurrence of a loud collision sound when a piece cut off by corner shearing falls onto the chute 9.

Since the slider 15 of the work stopper 11 and the case of the rotary encoder 33 are each made of vibration-damping steel plates, large vibrations are suppressed from being transmitted to the rotary encoder 33, and the detection accuracy of the rotary encoder 33 is improved. Durability will improve.

Furthermore, since the stand 47 is made of a vibration-damping steel plate, vibrations of the work table 5 are less likely to be transmitted to the digital scale box 45. This suppresses large vibrations of the digital scale box 45,
The durability of the digital scale will be improved.

Furthermore, since the oil tank 53 of the hydraulic system 51 is made of a vibration-damping steel plate, even if the vibration of the electric pump 55 attached to it or the switching operation vibration of the control valve 57 is transmitted to the oil tank 53, The oil tank 53 does not become a noise radiating surface, and hydraulic operation noise can be reduced.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited thereto.
It will be apparent to those skilled in the art that various embodiments are possible within the scope of the invention.

[Effects of the Invention] As can be understood from the description of the embodiments as described above, in the corner shearing machine according to the present invention, the frame, cover plate, chute, etc. are made of vibration-damping steel plates. Vibration and noise will be reduced, and the working environment will be particularly improved due to lower noise.

Furthermore, since the stand of the digital scale box is made of a vibration-damping steel plate, the digital scale box is less likely to be vibrated by the impact of corner shearing work, and the durability of the digital scale is improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of a corner shearing machine according to the present invention, FIG. 2 is a side view of the corner shearing machine shown in FIG. 1, and FIG. 3 is a corner shearing machine shown in FIG. 1. A front view showing the chute addition of the shearing machine, Fig. 4 is a longitudinal sectional view showing one embodiment of the work stopper provided in the corner shearing machine, and Figs. 5 and 6 show the hydraulic system provided in the corner shearing machine. FIG. 2 is a front view and a plan view. 1...Frame 3...Front cover 5
...Work table 7...Head 11...Work stopper 33...Rotary encoder

Claims (1)

[Claims] A corner shearing machine characterized in that component parts of the corner shearing machine such as a frame, a cover plate, a digital scale stand, and a chute are made of vibration-damping steel plates.