JPS6322010Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cutting device, and more specifically, a main body vice is disposed close to a cutting position where a material is cut by a cutting tool, and the main vice is arranged in the front and back direction to perform a material feeding action. This invention relates to a cutting device in which a material feeding vise that can freely reciprocate is arranged behind a main vise.

In this type of cutting device, a certain length of the tip of the material is cut off, that is, the tip is cut. In this case, it is necessary to position a stopper, which is provided so as to be adjustable in the front-rear direction in order to restrict the retreating position of the material feeding vise, so as to cut the tip. Therefore, when continuously cutting new materials that are supplied one after another, the position of the stopper must be adjusted for tip cutting each time a new material is supplied, which is troublesome and slows down the work. Problems arose in improving efficiency.

The present invention was developed in view of the conventional problems as described above, and is a cutting device that can easily cut the tip of a material without having to move and position the stopper each time, even when cutting the tip of the material. It provides:

FIG. 1 shows an automatic cutting device 3 attached with an automatic feeding material device 1. The automatic feeding material device 1 stores long materials 5 (see FIG. 4), such as round rods, in an orderly manner. a tilting rack 7, a stopper device 9 that locks the material 5 on the lowest stage, a flip-up device 11 that flips up the material 5 on the lowest stage over the stopper device 9, and a cutting device that supports the material 5. 3, a material feed roller 15 that vertically clamps a material 5 such as a long material and sends it to the cutting device 3, and a length measuring roller 17.

Furthermore, what is partially visible on the left side of the safety cover 19 of the cutting device 3 in FIG. 1 is the guide bar base 21.
, a fluid pressure cylinder 27 that drives two horizontal guide bars 23, 23, a material feeding vise table 25 (see FIG. 2), a piston rod 29 that connects the material feeding vise table 25 and the fluid pressure cylinder 27, etc. It is.

In FIG. 2, the guide bar 23 includes a guide bar base 21 and a main vice 31 disposed close to the cutting position where the material is cut by the cutting tool.
A cutting tool, for example, a circular saw blade 33, moves up and down in front of the main vice 31 (on the right side in FIG. 2) to perform the cutting operation.

A front vice device 35 shown in front of the circular saw blade 33 grips the material being cut to prevent vibration noise and ensure accurate cutting.

Further, a back gauge screw 37, which is supported by the guide bar base 21 and the main vice 31 and forms part of the back gauge device, is provided parallel to the guide bar 23.
5 (see FIG. 3).

The back gauge threaded rod 37 has a sprocket 41 fixed near its rear end, and the sprocket 4 is attached to a shaft 45 that is manually driven by a handle 43.
It can be freely rotated by a chain 49 that is routed between it and 7.

As shown in FIG. 3, the back gauge screw rod 37 is provided with a stopper 51 whose outer shape is, for example, a nut with a square shape, and a stopper plate 53 located above at a minute distance δ also serves to protect the screw rod from dirt. It is provided parallel to the back gauge screw 37.

A digital counter 55 is attached to the end of the shaft 45 opposite to the handle 43, and this digital counter 55 digitally displays the retreating end position of the material feeding vise table 25.

The vice device 57 of the material feeding vice table 25 has a C-shaped structure, and the fixed vice device 59 on the lower side
(See FIG. 4) is provided at the same height level as the supporting and moving roller 13, and is driven from above by, for example, a fluid pressure cylinder 61.
(See Figure 4) to grip the material 5.
In Fig. 2, a cradle part 65 is used for feeding materials from above.
There is no problem as there is a

As shown in FIG. 3, an abutment member 67 is provided on the rear surface of the material feeding vice table 25, and is driven by, for example, a fluid pressure cylinder 69 and guided by a guide member 71, so as to be able to move in and out of the window 39. be.

Therefore, when the abutting member 67 is retracted from the window 39 as shown in FIG. , the stopper 5 is moved to the position of the backward end micro switch 73 shown in FIG.
It is possible to move beyond 1.

Conversely, as shown in FIG. 3B, the abutment member 67
9, when the abutment member 67 is in the protruding state
contacts the stopper 51 during its backward stroke, and the required material feeding distance l of the material feeding vise table 25 is obtained.

A second micro switch 75 as a sensor is located at a position occupying a required material feeding distance l in front of the backward end micro switch 73 of the material feeding vice table 25 described above.
is provided so that the position can be set freely, and the material feeding vise table 2
5 is provided with a dog 77 that can freely come into contact with the second micro switch 75.

This dog 77 is attached to the threaded rod 7 from the material feeding vice table 25.
9 allows the rearward protrusion amount X to be freely adjusted.

In addition, as shown in FIG.
A brake roller 81 is provided on the one closest to the guide bar base 21 of No. 3, and this brake roller 81 moves clockwise in FIG. 4 around a shaft 85 attached to the machine frame by a bullet 83. is energized by

The brake roller 81 is pressed against the arm 85 by a bolt 91 via a disc spring 89, for example, so that the pressing force can be adjusted freely, and as will be described later, the material 5 is pushed back by the vice device 57 of the material feeding vice table 25. This acts to prevent gaps from forming by applying a reaction force that resists movement when moving.

Further, the brake roller 81 can be rotated counterclockwise against the bullet 83 by operating the fluid pressure cylinder 87.

Using the embodiment device of the present invention detailed above,
The case of automatically feeding material and automatically cutting will be explained.

In general, an automatic cutting device 3 attached to an automatic feeding material device 1 as illustrated in FIG. In this process, a process called edge cutting (also called tip cutting) is performed.

In other words, the ends of the material 5, which is a long material, are usually cut by hot forging during the manufacturing process, or are soiled during transportation, so that the cross-sectional shape is not normal. Approximately 50mm must be cut off and disposed of. This process is called rounding.

Whether it is edge cutting or subsequent cutting to a fixed size, the material 5 is gripped by the vice device 57 on the material feeding vise table 25 and fed into the part where the main body vise 31 is open, and the material 5 is fed into the main body. The position where it contacts the vise 31 is the material feeding advance end, and when the main vice 31 and the front vise 35 finish gripping the material 5, the cutting operation begins, and the material feeding vice stand 25 releases the vise and retreats. The retracting end is determined by contacting the stopper 51, and the material is repeatedly fed to a desired size by reciprocating between the forward end and the retracted end.

Therefore, the stopper 51 is positioned by the digital counter 55 by operating the handle 43 before starting the cutting operation so that the required material feeding length l is reached.

The apparatus according to the embodiment of the present invention has a unique effect in the above-mentioned edge cutting.

First, a case will be described in which a new material 5, which is a long material such as a round bar, is started from being cut off.

First, the material feeding vice stand 25 is stopped at the forward end where it contacts the main body vice 31, and the distance between the rear end surface of the material feeding vice stand 25 and the front surface of the stopper 51 is adjusted to the desired cutting length l. .

This work can be easily performed by operating the handle 43 and reading the digital counter 55 display.

Next, the length x that requires end cutting is adjusted by turning the threaded rod 79 to project the dog 77 rearward.

The second micro switch 75 is positioned at a distance from the micro switch 73 that determines the maximum retreating end position of the material feeding vice stand 25 by the desired cutting length l mentioned above, and the new material is supported and transferred from the automatic material feeding device 1. One material is fed onto the moving roller 13, and the material 5 is moved rightward by its rotational drive to the extent that it comes into contact with the vice device 57 of the material feeding vice table 25.

Next, the fluid pressure cylinder 69 is operated to cause the abutting member 67 on the rear surface of the material feeding vice table 25 to retract from the window 39.

Next, the fluid pressure cylinder 87 is opened, the brake roller 81 is pressed against the upper surface of the material 5 by the biasing force of the bullet 83, and the fluid pressure cylinder 27 is pressed while the vice device 57 of the material feeding vice table 25 is kept closed. is operated to move the material feeding vice stand 25 backward.

The material feeding vice table 25 allows the stopper 51 to pass through the window 39, and the dog 77 passes through the second micro switch 7.
Stop once at the position where it touches 5.

In the above-mentioned temporarily stopped state, the rear surface of the vice table 25 is exactly at the position l+x from the rear limit micro switch 73, and the vice device 57 of the material feeding vice table 25 and the material 5 are moved by the action of the brake roller 81.
It is closely related to.

Next, the vice device 57 of the material feeding vise table 25 is opened, the material feeding vise table 25 is moved backward until it comes into contact with the backward limit micro switch 73, and after stopping, the material is gripped by the vice device 57.

In this way, the material 5 is gripped by the vice device 57 of the material feeding vice stand 25, and the material 5 is held while being protruded forward by precisely l+x from the rear surface of the material feeding vice stand 25.

After this, if the brake roller 81 is released and the material feeding vice table 25 is advanced to the forward end, the edge cutting amount of x is projected from the circular saw blade 33 as shown at the right end of FIG. 4. It is positioned and the edge is cut.

After one end cut is made, the hydraulic cylinder 6
Needless to say, by operating the abutment member 9 and protruding the abutment member 67 into the window 39, the subsequent cutting to the length l is performed.

The above describes the case of starting a new cutting operation, but as one long material is cut to the required length one after another, the length becomes shorter, and the length of material 5 is shorter than the length of the next cut to the required length. Then, the material feeding vise table 25
A microswitch (not shown) provided in the vise device 57 issues a signal indicating that the remaining length of the material 5 is insufficient.

In response to this signal, the material feeding vice stand 25 advances to the forward end with the vice device 57 closed, pushes out the remaining material, moves a new piece of material 5 from the inclined rack 7 to the supporting/moving roller 13, and device 57
I will send it towards. In this case, the process of cutting off the new material 5 is exactly the same as described above, so a description thereof will be omitted.

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims for utility model registration. The material feeding vice stand 25, which is provided to be able to reciprocate back and forth in the front and back direction behind the main body vise 31 arranged close to it, has an abutment member 67 that abuts against a stopper 51 that can freely position the retreating position of the material feeding vice stand 25. This abutment member 67 is provided so as to be able to move out and away from the position where it abuts against the stopper 51. In addition, the distance l from the rear of the material feeding vice stand 25 to the cutting position when the material feeding vice stand 25 is located at the most forward position, and the sensor 75 disposed in front of the most retracted position of the material feeding vice stand 25. The distance to the most retracted position is approximately equal, and the sensor 75 is provided on the material feeding vice stand 25.
A dog 77 that operates is provided so that its position can be adjusted in the front-rear direction.

With the above configuration, in the present invention, by selecting the position of the abutment member 67, the retracted position of the material feeding vise table 25 can be set to a position where it abuts the stopper 51, a most retracted position beyond the stopper 51, etc. It is something that can be changed.

Therefore, the abutment member 67 touches the stopper 5.
1, the retreat position of the material feeding vise table 25 is regulated, and the material feeding vise table 25 reciprocates between the stopper 51 and the most advanced position to carry out the sizing material feeding operation. will be carried out. Therefore, the material 5 can be successively cut into the same size.

When the abutting member 67 is recessed so as not to contact the stopper 51, the tip of the new material 5 is in contact with the material feeding vise table 25, and the dog 77 is removed from the material feeding vice table 25. The dog 77 protrudes backward by a dimension X, and this dog 77 connects to the sensor 7.
5 to stop the retraction of the material feeding vise table 25, the tip of the material 5 is released from contact with the material feeding vise table 25. Then material 5
is held in that position, the material feeding vise table 25 is retreated to the most retracted position, the material 5 is gripped, and the material feeding vise table 25 is advanced to the most advanced position. Only X will stand out. Therefore, the tip of the new material 5 has the dimension
The tip can be cut with the .

That is, according to the present invention, when a plurality of materials 5 are continuously supplied to obtain a large number of products with the same dimensions, there is no need to move the stopper 51 that sets the cutting dimension, and the stopper 51 can be set at the set position. It is something that can be kept. Since the feed vice table 25 is released from contact with the stopper 51 only when cutting the leading end of the new material 5 that is successively supplied, the material 5 can be accurately cut to size, and This is effective in improving work efficiency.

Note that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments by making appropriate changes.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the background of the implementation of the present invention, FIG. 2 is a plan explanatory diagram of an embodiment of the device of the present invention,
Fig. 3 is a partial view in the - arrow direction of Fig. 2, Fig. 4 is an explanatory diagram showing the setting positions of the same micro switches, etc., and Fig. 5 is a diagram illustrating the brake roller in the - arrow direction of Fig. 4. It is. Explanation of the symbols representing the main parts of the drawings, 25... Material feeding vise stand, 31... Main body vice, 37... Back gauge screw, 39... Window, 51... Stopper, 57... Vise device, 67... Thrust Abutment member, 73... Retraction end micro switch, 75...
Second micro switch, 81...Brake roller.

Claims (1)

[Scope of utility model registration request] A material feeding vice stand 25 that grips the material 5 and performs a material feeding action is provided at a rear position of the main body vise 31 disposed close to the cutting position so as to be able to reciprocate in the front and back direction. A stopper 51 whose position can be freely adjusted is provided so that the position can be adjusted in the front-rear direction, and the abutting member 67 attached to the material feeding vise table 25 is positioned at a position where it abuts the stopper 51 when the material feeding vise table 2 is retracted. The distance l from the rear of the material feeding vice stand 25 to the cutting position when the material feeding vice stand 25 is located at the most advanced position, and the material feeding vice stand 2
The distance from the sensor 75 disposed in front of the most retracted position of No. 5 to the most retracted position is approximately equal to the distance from the most retracted position, and a dog 77 for operating the sensor 75 is provided on the material feeding vice table 25 so as to be freely adjustable in the front and back direction. A cutting device characterized by: