JPH0314256Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a material support device for a shearing machine, and more specifically, to a material support device such as a shearing machine that supports cutting material that moves in accordance with the slope of a movable blade. It is related to the device.

b. Prior art For example, in prior art such as Utility Model Application Publication No. 53-25277,
This is an example in which the rear material support device of a shearing machine is provided to prevent material from sagging.
It was of a type in which the rear material support device was lowered while remaining in an overall horizontal state.

c Problems that the invention aims to solve Originally, the upper blade of a shearing machine maintained a rake angle with the lower blade, and when cutting the material, the upper blade moved from one end of the upper blade to the other. The cutting progresses as the direction progresses.

Furthermore, since the upper blade naturally has some thickness, the part that has already been cut at the cutting point is pressed down by the upper blade and is forced to descend, while the part that has not yet been cut is horizontally protruding from the table. It is maintained.

Therefore, at the end of cutting, the base material and the part to be cut are connected through a small cross-sectional area, so the breakage occurs before the cutting, resulting in the inconvenience that the final cut part of the cut product is deformed or twisted. It was hot.

d Means for solving the problem The present invention was made in view of the conventional problems as mentioned above.The present invention consists of a lower blade attached to the rear of the table and an upper blade attached to a ram that is movable up and down. As a material support device for a shearing machine that shears material with a blade, a plurality of material support stands that support the material to be sheared by the lower blade and the upper blade are installed behind the lower blade in the longitudinal direction of the lower blade. Each of the material support stands is provided so as to be movable up and down, and an elevating actuator is provided to individually move up and down each of the material support stands, and when the material is sheared by the descent of the ram,
A control device is provided for sequentially lowering the material support base on the lower end side of the slope of the upper blade in accordance with the rake angle of the upper blade, and the material support base is controlled at a height position of the material pass line and from the pass line. The lower position horizontally supports the sheared material and the lower position can be freely controlled.

e Embodiment FIG. 1 is a central cross-sectional view of a general shearing machine 1 suitable for carrying out the present invention. is placed in a horizontal position.

A lower blade 7 is fixed to the rear end of the table 5 (the right end in FIG. 1), and the upper frame 9 is provided with a ram 13 that is driven up and down by a fluid pressure cylinder 11. An upper blade 15 is attached to a portion corresponding to the lower blade 7.

Furthermore, a back gauge device 19 is provided on the horizontally reinforcing lower plate 17 of the ram 13 so as to be movable and positioned in the front and back direction (horizontal direction in FIG. 1), and at the front end of the upper frame 9, the material W is placed on the table 5. A plate holding device 21 is provided to fix the plate.

FIG. 2 shows an embodiment of the present invention.

That is, a plurality of independent material support stands 23 are provided in the lower frame 3 and are movable up and down.

Further, as is clear from FIG. 3, a plurality of shooters 25 are provided on a downward slope toward the rear, sandwiched between the material support stands 23 described above.

Below the lower blade 7 and toward the rear of the lower frame 3, a linear bearing case 27 and a bracket 31 of the fluid pressure cylinder 29 as shown in FIG. 5 are fixedly attached.

The material support stand 23 described above has a channel-shaped cantilever support 35 with a bracket 33 at the lower front end, and a plurality of roller shafts 37 provided thereon.
The rear end of 3 is connected to the hydraulic cylinder 2 via a link 39.
It is pivoted to the tip block 43 of the piston rod 41 of No. 9.

A slide pipe 47 that can be raised and lowered while being guided by the linear bearing 45 held by the linear bearing case 27 is provided, and a portion of the slide pipe 47 has a link 39 connected to the tip block 43 of the piston rod 41 described above. is attached to the shaft.

A rotary shaft 55 having a thrust bearing 51 and a bevel gear 53 at its lower end is provided inside the slide pipe 47, and as shown in FIG. 61 is being driven.

The front end (the left end in FIG. 4) of the bracket 33 described above is divided into a clevis shape and is pivoted to the outer periphery of the slide pipe 47, and furthermore, in the middle of the slide pipe 47 is a bracket assembly 63 that projects rearward. is attached.

A portion of the bracket assembly 63 is provided with a link 65 that connects with the tip block 43 described above.

Adjacent material support 2 as seen in FIG.
For example, intermediate bearing ball bushes 67 are provided that move up and down integrally with the slide pipe 47 on the left and right sides that equally divide the space between the adjacent material support stands 23 into three.

3 and 5 show a connecting rod 69 and a support 71 extending left and right from the slide pipe 47 (left and right in FIG. 3, and up and down in FIG. 5).

A passage hole 73 is provided at a position through which the shutter 25 passes through the column of the ball bush 67.

The rotating shaft 55, which is rotated by the bevel gear 53 provided at the lower end of the rotating shaft 55 described above, has a tubular shape, and a spline shaft 75 is inserted into the inner surface of the rotating shaft 55 to fit into a spline groove in the tube.

A bevel gear 77 is fixed to the top of the one-way spline shaft 75 and supported by a thrust bearing 79 at the top of the slide pipe 47, so the bevel gear 77 moves up and down integrally with the slide pipe 47.

As shown in FIG. 6, when the cantilever support 35 is in a substantially horizontal state, the bevel gear 77 engages with the bevel gear 81 in the cantilever support 35, and the shaft 83
The upper rollers 85 and 87 are driven by a gear connection.

The sprocket 89 and chain 91 provided between the two rollers 85 and 87 described above are for driving the pusher 93 shown in FIG. 2 to return the material W to the front table 5 of the shearing machine 1. be.

The outer sprocket 95 and chain 97 are used to simultaneously drive multiple rollers 99 in the same direction.

In FIG. 7, the pusher 93 is located below the roller group and occupies a position where it does not interfere with the transport of the material W.

Figure 8 is a diagram of the fluid pressure piping that controls the operation of the fluid pressure cylinder 29.
SOLC is excited and the cantilever support 35 also descends,
The descending speed of the throttle valve 101 is set to be slower than the descending speed of the upper blade 15.

Therefore, although the cantilever support 35 is pushed down by the upper blade 15, the cantilever support 35 also descends in accordance with the lowering of the upper blade 15 without causing any danger due to the safety valve 103.

f Effect In the above configuration, when the piston rod 41 of the fluid pressure cylinder 29, which forms the lifting device for moving the material support table 23 up and down, is in the pulled state as shown in FIG. The stand 23 is in an inclined state below the shooter 25. When the piston rod 41 of the fluid pressure cylinder 29 is operated to protrude, the material support table 23 is first swung upward by the action of the links 39 and 65 to a horizontal state. Next, when the piston rod 41 is further moved to protrude, the material support stand 23 is held horizontally and raised to the material pass line position.

When the piston rod 41 of the hydraulic cylinder 29 is retracted while the material support table 23 is in the elevated state to the pass line position, the aforementioned operation is performed in reverse and the material support table 23 returns to its initial state.

Therefore, when each material support stand 23 is raised to the pass line height position to support the material M, and then the ram 13 is lowered to start shearing the material M, the rake angle of the upper blade 15 Correspondingly, the material support table 23 at the lower end of the upper blade is horizontally lowered one after another to support the material after shearing.

That is, the part of the material M before shearing is supported horizontally by each material support stand 23 at the pass line height position, and the part after shearing is supported horizontally by each material support stand 23 that has been lowered. It is something that Therefore, the material M is sheared in a state where it is prevented from curving due to its own weight, and the weight of the sheared portion does not act on the shearing position.

g. Effects of the invention As can be understood from the above explanation of the embodiments, the gist of the invention is as stated in the claims for utility model registration. As can be understood from the description, according to the present invention, a plurality of material support stands 23 for supporting the material W are arranged in the longitudinal direction of the lower blade 7, and when shearing the material W by lowering the ram 13, the upper Upper blade 1 corresponds to the rake angle of blade 15.
The materials are sequentially lowered from the material support stand 23 on the lower end side of the slope of No. 5, and the material after shearing is supported horizontally by the lowered material support stand 23.

[Brief explanation of the drawing]

Figure 1 is a central sectional view of a general shearing machine that is the subject of the present invention, Figure 2 is a side view of the area around the material support base of the embodiment of the present invention, and Figure 3 is the left side of Figure 2. Fig. 4 is an enlarged explanatory view of the vicinity of the left center part of Fig. 2, Fig. 5 is an enlarged explanatory view of the - cross-sectional view of Fig. 4, Fig. 6 is an enlarged explanatory view of the upper left part of Fig. 2, and Fig. 7
The figure is a cross-sectional view taken along the - arrow in FIG. 6, and FIG. 8 is a fluid pressure piping diagram. Explanation of symbols representing main parts of the drawings, 1... Shearing machine, 19... Back gauge device, 23
...Material support device, 35...Cantilever support, 47...
Slide pipe, 55... Rotating shaft, 67... Intermediate support ball bushing, 71... Support column, 101...
Throttle valve.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Lower blade 7 attached to the rear of table 5 and upper blade 15 attached to ram 13 that is movable up and down.
A material support device for a shearing machine that shears a material W by means of the lower blade 7 and the upper blade 1.
A plurality of material support stands 23 supporting the material W to be sheared by the lower blade 7 are placed behind the lower blade 7.
are arranged in the longitudinal direction, each of the material support stands 23 is provided to be movable up and down, and an elevating actuator 29 is provided to move each material support stand 23 up and down individually, and the material W is sheared by the lowering of the ram 13. At times, a control device is provided for sequentially lowering the material support stand 23 on the lower end side of the slope of the upper cutter 15 in accordance with the rake angle of the upper cutter 15, and the material support stand 23 is adjusted to the pass line height of the material. A material support device for a shearing machine, characterized in that the material support device for a shearing machine is provided in a position that can be freely controlled at a lower position and a lowered position for horizontally supporting the material after shearing below a pass line. (2) The material support device according to claim 1, wherein the material support table 23 is provided with a roller that can freely rotate in forward and reverse directions.