JPH0711856Y2 - Scrap cutting equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cutting device for compressing scrap material and cutting it into an appropriate length.

[Conventional technology]

The general structure of this type of scrap cutting device is, as shown in FIGS. 1 and 2, a portal frame 1 forming a shear body, a scrap supply device 2 and a material pusher 3.
It is configured by connecting.

A vertically movable cutting upper blade 4 and a fixed lower cutting blade 5 are attached to the frame 1 so as to face each other, and a pressing slide 6 for pressing downward scrap material is attached behind the upper blade 4. ing.

The scrap supply device 2 is provided with a lateral pushing slide 7 that moves back and forth inside the feeding device 2, and the lateral pushing slide 7 presses the scrap material introduced into the feeding device 2 against the side wall of the feeding device 2. And is compressed to the cutting width, and the compressed material is then extruded by the material pusher 3 toward the shear body. In the shear body,
The scrap material pushed out is pressed up and down by the presser slide 6 to be compressed in the height direction, and then the upper blade 4 and the lower blade 5
Disconnect between.

[Problems to be solved by the device]

In the scrap cutting device having the above structure, the scrap material in the supply device 2 is pressed by the side wall 2a of the supply device 2 and compressed by the entire lateral pushing slide 7. Therefore, the lateral pushing load applied by the scrap material is dispersed over the entire slide surface of the lateral pushing slide 7, and the load per surface becomes small. Therefore, in the case of the scrap material having a high internal density, the compressive force is insufficient, It often happens that the cutting width cannot be compressed.

In such a case, conventionally, there is a method in which a worker uses a hammer, gas cutting, or the like to make a cut or crack in the scrap material to easily crush the material, and compresses it to the cutting width by compressing the lateral push slide. It was taken. However, in the above method, the work is extremely troublesome, and the work inside the supply device is accompanied by many risks, and the work efficiency is poor because the device is stopped for a long time. There are also problems.

The present invention has been made in view of the above problems, in which mechanical deformation force is applied to scrap material inside the supply device,
An object of the present invention is to provide a cutting device capable of reliably compressing a material.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a shearing body having a vertically movable cutting upper blade and a fixed lower cutting blade,
The scrap supply device and the material pusher are connected, and the scrap supply device is moved back and forth inside the supply device.
In the scrap cutting device, which is provided with a lateral pushing slide for compressing the scrap material to be fed into the supply device to the cutting width, and the compressed scrap material is pushed out to the shear body by the material pusher, the scrap supply device is provided with the supply device. In the scrap cutting device, which is provided with a lateral pushing slide that moves back and forth inside and compresses scrap material to be fed into the feeding device to a cutting width, and pushes the compressed scrap material into the shear body by the pusher, the scrap feeding device On the side wall opposite to the lateral pushing slide, a thrust ram movable toward the lateral slide is provided at a position near the center of the side wall, and the width of the pushing surface of the pushing ram is set to the pushing surface of the lateral pushing slide. It is formed to be significantly smaller than the width of the It is the concatenation of the drive means for producing a local deformation on the material pressed against the reduced material.

[Operation] When the slide material is not compressed to the cutting width in the state of being compressed by the lateral push slide, if the pushing ram is projected to the feeding device and pressed against the scrap material, the scrap material is locally pressed at the pressing portion. Deformation is generated by the application of specific stress. Therefore, the scrap material is easily crushed from the deformed portion and compressed into a small size by the load of the lateral pushing slide.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a scrap cutting apparatus according to an embodiment includes a portal frame 1 that constitutes a shear body and a scrap supply device 2 connected to the rear of the frame 1.
And a material pusher 3 connected to its rear part.

A cutting slide 9 having a cutting upper blade 4 fixed to the lower end thereof and a material pressing slide 6 are attached to the opening 8 of the frame 1 so as to be vertically movable. Cutting slide 9 is frame 1
One or more hydraulic cylinders mounted on the upper frame 1a of the
Gibbs 11 that are driven by 10 and that guide the movement of the cutting slide 9 are attached to both sides of the opening 8.

The presser slide 6 is driven by a hydraulic cylinder 12 mounted behind the cutting slide driving cylinder 10 of the upper frame 1a.

Below the opening 8 of the frame 1, a receiving base 13 is provided below the presser slide 6, and a lower cutting blade 5 is attached to the upper front side of the receiving base 13. The lower blade 5 is formed in a linear shape in the width direction, and when the cutting slide 9 descends, the lower blade 5 slides on the end surface of the upper blade 4.

On the other hand, as shown in FIG. 1, the upper blade 4 is formed such that the shape of the cutting edge is vertically inclined in the width direction, and due to this inclination, a required cutting angle with the lower blade 5, a so-called shear. You're getting the horn.

As shown in FIG. 3, the scrap supply device 2 has a container shape in which a lateral slide 7 that moves in the width direction of the slide plate 14 is provided on one side of a material slide plate 14 having a side wall 2a on one side. The upper part of the side wall 2a is an opening for charging scrap material, and the upper part of the side wall 2a closes the opening.
15 is rotatably mounted.

The lateral push slide 7 is attached to the tip of a support arm 16 rotatably attached to the side portion of the slide plate 14, and a plurality of drive cylinders 17 for driving the lateral push slide 7 to the side of the supply device 2. Is provided. As shown by the broken line in FIG. 3, the moving stroke of the lateral pushing slide 7 is such that the cutting width, that is, the same length as the width of the lower blade 5, remains on the slide plate 14 when moved to the maximum. The scrap material that has been set and has been charged into the supply device 2 is pressed toward the side wall 2a by the lateral push slide 7 and compressed to the cutting width.

On the other hand, on the side wall 2a of the supply device 2 facing the lateral push slide 7, two pushing rams 18 are provided at a predetermined interval in the length direction of the supply device 2. A hydraulic cylinder 19 as a drive means for pressing the push ram against the scrap material is connected to the rear portion of the push ram 18, and the push ram 18 moves forward and backward in the supply device 2 by the operation of the cylinder 19. Then, they move toward and away from the lateral push slide 7. The tip end surface of the push ram 18 is formed as narrow as possible in comparison with the width of the pressing surface of the lateral pressing slide 7 so that the pressing area can be reduced and the surface pressure can be increased. In addition, it may be formed in a chevron shape toward the lateral push slide 7.

As shown in FIG. 7, the material pusher 3 connected to the rear of the scrap supply device 2 moves the extrusion plate 20 having the same width as the cutting width and the extrusion plate 20 in the length direction of the material slide plate 14. It consists of a drive cylinder 21.
The pusher 3 extrudes the scrap material compressed by the supply device 2 forward by a predetermined amount for each cycle of cutting, and after the scrap material is completely extruded from between the upper blade 4 and the lower blade 5, after a predetermined time. It is controlled to return to the end position.

This embodiment is constructed as described above, and its operation will be described below.

When the scrap material is fed into the supply device 2, the pressing lid 15 closes the upper part of the supply device 2, and then the hydraulic cylinder 17 is operated so that the lateral pushing slide 7 presses the scrap material against the side wall 2a and compresses it. To do.

At this time, if the scrap material has a high internal density and is made of a material that is difficult to be crushed, the compressing force of the lateral pushing slide 7 is insufficient, and the lateral pushing slide 7 must advance to the set press position as shown in FIG. Cannot be performed, and the robot stops at the midway position. In this case, as shown in FIG. 6, the hydraulic cylinder 19 is operated to push the pushing ram 18 into the feeding device 2 and push the scrap material A toward the lateral pushing slide 7.

In this case, since the pressing surface at the tip of the pushing ram 18 is formed to have a narrow width, a large pressing force is applied to the scrap material portion with which the tip is in contact, and the scrap material A is locally Deformation occurs. This deformation may be a mountain-shaped deformation as shown or a crack.

When the local deformation occurs in this way, the scrap material A, which has maintained its overall shape against the load of the lateral pushing slide 7, loses the balance of forces and is continuously applied. By the load of, as shown in FIG.
It is crushed from the deformed part and compressed to the cutting width.

When the scrap material is compressed to the cutting width in this way,
The material pusher 3 is operated to push the scrap material toward the frame 1, and then the pressing slide 6 is lowered to compress the scrap material in the vertical direction. Then, the material pusher 3 is further actuated, and the scrap material extruded to the front side of the lower blade 5 is lowered by the upper blade 4 and cut between the scrap material and the lower blade 5.

On the other hand, when the density of the scrap material is low and the scrap material is easily crushed, the scrap material is compressed to the cutting width by the pressing of the lateral pushing slide 7. In this case, the material pusher 3 is then actuated, the scrap material is extruded toward the frame 1, and the same cutting operation as described above is performed.

The number of the pushing rams 18 is the same as that of the scrap supply device 2
It is set according to the size of, and it is set to one or two or more. Also, when multiple push rams are attached,
In addition to the operation of operating the rams at the same time, they may be operated independently of each other.

[Effect of device]

As described above, according to the present invention, since the pushing ram provided to face the lateral pushing slide applies a local stress to the scrap material, the material can be locally deformed, Can be reliably compressed to the cutting width. Therefore, there is no need for manual cutting work by an operator as in the conventional case, and there is an effect that the efficiency of cutting work can be improved and significant labor saving can be realized.

[Brief description of drawings]

FIG. 1 is a plan view of a scrap cutting device according to the present invention,
2 is a partially longitudinal side view of the same, FIG. 3 is a front view of the same, FIG. 4 is a cross-sectional view taken along the line I-I of FIG. 1, and FIG.
FIGS. 7 to 7 are views showing the same operation. 1 ... frame, 2 ... scrap supply device, 3 ... material pusher, 4 ... cutting upper blade, 5 ... cutting lower blade,
6 ... Presser slide, 17 ... Hydraulic cylinder, 18 ... Push ram, 19 ... Hydraulic cylinder, A ... Scrap material.

Claims (1)

[Scope of utility model registration request] 1. A scrap supply device and a material pusher are connected to a shearing body having a vertically movable cutting upper blade and a fixed cutting lower blade, and the scrap feeding device is moved back and forth inside the feeding device. Then, in the scrap cutting device for providing the lateral pushing slide for compressing the scrap material fed into the feeding device to the cutting width, and for pushing the compressed scrap material into the shear body by the pusher, the lateral pushing slide of the scrap feeding device is provided. On the opposite side wall,
A pushing ram movable toward the lateral pushing slide is provided at a position near the center of the side wall, and the width of the pushing surface of the pushing ram is formed to be significantly smaller than the width of the pushing surface of the lateral pushing slide. A scrap cutting device characterized in that a drive means for pressing the pushing ram against a material compressed by a lateral pushing slide to locally deform the material is connected to the pushing ram.